zlib 1.2.1.1

zlib 1.2.1
zlib 1.2.0.8
2011-09-09 23:23:38 -07:00 · 2011-09-09 23:23:27 -07:00 · 2011-09-09 23:23:14 -07:00 · 2011-09-09 23:23:01 -07:00 · 2011-09-09 23:22:48 -07:00 · 2011-09-09 23:22:37 -07:00
169 changed files with 13898 additions and 8128 deletions
--- a/174
+++ b/174
@@ -1,5 +1,177 @@

                ChangeLog file for zlib
+
+Changes in 1.2.1.1 (9 January 2004)
+- Updated email address in README
+- Several FAQ updates
+- Fixed a big fat bug in inftrees.c that prevented decoding valid
+  dynamic blocks with only literals and no distance codes.
+- Add a note to puff.c on no distance codes case.
+
+Changes in 1.2.1 (17 November 2003)
+- Remove a tab in contrib/gzappend/gzappend.c
+- Update some interfaces in contrib for new zlib functions
+- Update zlib version number in some contrib entries
+- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]
+- Support shared libraries on Hurd and KFreeBSD [Brown]
+- Fix error in NO_DIVIDE option of adler32.c
+
+Changes in 1.2.0.8 (4 November 2003)
+- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas
+- Add experimental NO_DIVIDE #define in adler32.c
+    - Possibly faster on some processors (let me know if it is)
+- Correct Z_BLOCK to not return on first inflate call if no wrap
+- Fix strm->data_type on inflate() return to correctly indicate EOB
+- Add deflatePrime() function for appending in the middle of a byte
+- Add contrib/gzappend for an example of appending to a stream
+- Update win32/DLL_FAQ.txt [Truta]
+- Delete Turbo C comment in README [Truta]
+- Improve some indentation in zconf.h [Truta]
+- Fix infinite loop on bad input in configure script [Church]
+- Fix gzeof() for concatenated gzip files [Johnson]
+- Add example to contrib/visual-basic.txt [Michael B.]
+- Add -p to mkdir's in Makefile.in [vda]
+- Fix configure to properly detect presence or lack of printf functions
+- Add AS400 support [Monnerat]
+- Add a little Cygwin support [Wilson]
+
+Changes in 1.2.0.7 (21 September 2003)
+- Correct some debug formats in contrib/infback9
+- Cast a type in a debug statement in trees.c
+- Change search and replace delimiter in configure from % to # [Beebe]
+- Update contrib/untgz to 0.2 with various fixes [Truta]
+- Add build support for Amiga [Nikl]
+- Remove some directories in old that have been updated to 1.2
+- Add dylib building for Mac OS X in configure and Makefile.in
+- Remove old distribution stuff from Makefile
+- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X
+- Update links in README
+
+Changes in 1.2.0.6 (13 September 2003)
+- Minor FAQ updates
+- Update contrib/minizip to 1.00 [Vollant]
+- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]
+- Update POSTINC comment for 68060 [Nikl]
+- Add contrib/infback9 with deflate64 decoding (unsupported)
+- For MVS define NO_vsnprintf and undefine FAR [van Burik]
+- Add pragma for fdopen on MVS [van Burik]
+
+Changes in 1.2.0.5 (8 September 2003)
+- Add OF to inflateBackEnd() declaration in zlib.h
+- Remember start when using gzdopen in the middle of a file
+- Use internal off_t counters in gz* functions to properly handle seeks
+- Perform more rigorous check for distance-too-far in inffast.c
+- Add Z_BLOCK flush option to return from inflate at block boundary
+- Set strm->data_type on return from inflate
+    - Indicate bits unused, if at block boundary, and if in last block
+- Replace size_t with ptrdiff_t in crc32.c, and check for correct size
+- Add condition so old NO_DEFLATE define still works for compatibility
+- FAQ update regarding the Windows DLL [Truta]
+- INDEX update: add qnx entry, remove aix entry [Truta]
+- Install zlib.3 into mandir [Wilson]
+- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]
+- Adapt the zlib interface to the new DLL convention guidelines [Truta]
+- Introduce ZLIB_WINAPI macro to allow the export of functions using
+  the WINAPI calling convention, for Visual Basic [Vollant, Truta]
+- Update msdos and win32 scripts and makefiles [Truta]
+- Export symbols by name, not by ordinal, in win32/zlib.def [Truta]
+- Add contrib/ada [Anisimkov]
+- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]
+- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]
+- Add contrib/masm686 [Truta]
+- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm
+  [Truta, Vollant]
+- Update contrib/delphi; rename to contrib/pascal; add example [Truta]
+- Remove contrib/delphi2; add a new contrib/delphi [Truta]
+- Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,
+  and fix some method prototypes [Truta]
+- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip
+  [Truta]
+- Avoid the use of backslash (\) in contrib/minizip [Vollant]
+- Fix file time handling in contrib/untgz; update makefiles [Truta]
+- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines
+  [Vollant]
+- Remove contrib/vstudio/vc15_16 [Vollant]
+- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]
+- Update README.contrib [Truta]
+- Invert the assignment order of match_head and s->prev[...] in
+  INSERT_STRING [Truta]
+- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings
+  [Truta]
+- Compare function pointers with 0, not with NULL or Z_NULL [Truta]
+- Fix prototype of syncsearch in inflate.c [Truta]
+- Introduce ASMINF macro to be enabled when using an ASM implementation
+  of inflate_fast [Truta]
+- Change NO_DEFLATE to NO_GZCOMPRESS [Truta]
+- Modify test_gzio in example.c to take a single file name as a
+  parameter [Truta]
+- Exit the example.c program if gzopen fails [Truta]
+- Add type casts around strlen in example.c [Truta]
+- Remove casting to sizeof in minigzip.c; give a proper type
+  to the variable compared with SUFFIX_LEN [Truta]
+- Update definitions of STDC and STDC99 in zconf.h [Truta]
+- Synchronize zconf.h with the new Windows DLL interface [Truta]
+- Use SYS16BIT instead of __32BIT__ to distinguish between
+  16- and 32-bit platforms [Truta]
+- Use far memory allocators in small 16-bit memory models for
+  Turbo C [Truta]
+- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in
+  zlibCompileFlags [Truta]
+- Cygwin has vsnprintf [Wilson]
+- In Windows16, OS_CODE is 0, as in MSDOS [Truta]
+- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]
+
+Changes in 1.2.0.4 (10 August 2003)
+- Minor FAQ updates
+- Be more strict when checking inflateInit2's windowBits parameter
+- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well
+- Add gzip wrapper option to deflateInit2 using windowBits
+- Add updated QNX rule in configure and qnx directory [Bonnefoy]
+- Make inflate distance-too-far checks more rigorous
+- Clean up FAR usage in inflate
+- Add casting to sizeof() in gzio.c and minigzip.c
+
+Changes in 1.2.0.3 (19 July 2003)
+- Fix silly error in gzungetc() implementation [Vollant]
+- Update contrib/minizip and contrib/vstudio [Vollant]
+- Fix printf format in example.c
+- Correct cdecl support in zconf.in.h [Anisimkov]
+- Minor FAQ updates
+
+Changes in 1.2.0.2 (13 July 2003)
+- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
+- Attempt to avoid warnings in crc32.c for pointer-int conversion
+- Add AIX to configure, remove aix directory [Bakker]
+- Add some casts to minigzip.c
+- Improve checking after insecure sprintf() or vsprintf() calls
+- Remove #elif's from crc32.c
+- Change leave label to inf_leave in inflate.c and infback.c to avoid
+  library conflicts
+- Remove inflate gzip decoding by default--only enable gzip decoding by
+  special request for stricter backward compatibility
+- Add zlibCompileFlags() function to return compilation information
+- More typecasting in deflate.c to avoid warnings
+- Remove leading underscore from _Capital #defines [Truta]
+- Fix configure to link shared library when testing
+- Add some Windows CE target adjustments [Mai]
+- Remove #define ZLIB_DLL in zconf.h [Vollant]
+- Add zlib.3 [Rodgers]
+- Update RFC URL in deflate.c and algorithm.txt [Mai]
+- Add zlib_dll_FAQ.txt to contrib [Truta]
+- Add UL to some constants [Truta]
+- Update minizip and vstudio [Vollant]
+- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
+- Expand use of NO_DUMMY_DECL to avoid all dummy structures
+- Added iostream3 to contrib [Schwardt]
+- Replace rewind() with fseek() for WinCE [Truta]
+- Improve setting of zlib format compression level flags
+    - Report 0 for huffman and rle strategies and for level == 0 or 1
+    - Report 2 only for level == 6
+- Only deal with 64K limit when necessary at compile time [Truta]
+- Allow TOO_FAR check to be turned off at compile time [Truta]
+- Add gzclearerr() function [Souza]
+- Add gzungetc() function
+
 Changes in 1.2.0.1 (17 March 2003)
 - Add Z_RLE strategy for run-length encoding [Truta]
    - When Z_RLE requested, restrict matches to distance one
@@ -12,7 +184,7 @@ Changes in 1.2.0.1 (17 March 2003)
    - Include additional header file on VMS for off_t typedef
 - Try to use _vsnprintf where it supplants vsprintf [Vollant]
 - Add some casts in inffast.c
- Enchance comments in zlib.h on what happens if the gzprintf() tries to
+- Enchance comments in zlib.h on what happens if gzprintf() tries to
  write more than 4095 bytes before compression
 - Remove unused state from inflateBackEnd()
 - Remove exit(0) from minigzip.c, example.c
--- a/161
+++ b/161
@@ -13,25 +13,26 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html

 2. Where can I get a Windows DLL version?

-    The zlib sources can be compiled without change to produce a DLL. If you
-    want a precompiled DLL, see http://www.winimage.com/zLibDll/ . Questions
-    about the zlib DLL should be sent to Gilles Vollant (info@winimage.com).
+    The zlib sources can be compiled without change to produce a DLL.
+    See the file win32/DLL_FAQ.txt in the zlib distribution.
+    Pointers to the precompiled DLL are found in the zlib web site at
+    http://www.zlib.org.

 3. Where can I get a Visual Basic interface to zlib?

    See
-        * http://www.winimage.com/zLibDll/cmp-z-it.zip
        * http://www.dogma.net/markn/articles/zlibtool/zlibtool.htm
        * contrib/visual-basic.txt in the zlib distribution
+        * win32/DLL_FAQ.txt in the zlib distribution

- 4. compress() returns Z_BUF_ERROR
+ 4. compress() returns Z_BUF_ERROR.

    Make sure that before the call of compress, the length of the compressed
    buffer is equal to the total size of the compressed buffer and not
    zero. For Visual Basic, check that this parameter is passed by reference
    ("as any"), not by value ("as long").

- 5. deflate() or inflate() returns Z_BUF_ERROR
+ 5. deflate() or inflate() returns Z_BUF_ERROR.

    Before making the call, make sure that avail_in and avail_out are not
    zero. When setting the parameter flush equal to Z_FINISH, also make sure
@@ -46,8 +47,8 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html

    It's in zlib.h for the moment, and Francis S. Lin has converted it to a
    web page zlib.html. Volunteers to transform this to Unix-style man pages,
-    please contact Jean-loup Gailly (jloup@gzip.org). Examples of zlib usage
-    are in the files example.c and minigzip.c.
+    please contact us (zlib@gzip.org). Examples of zlib usage are in the files
+    example.c and minigzip.c.

 7. Why don't you use GNU autoconf or libtool or ...?

@@ -72,12 +73,12 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html

 10. I need a Delphi interface to zlib.

-    See the directories contrib/delphi and contrib/delphi2 in the zlib
-    distribution.
+    See the contrib/delphi directory in the zlib distribution.

 11. Can zlib handle .zip archives?

-    See the directory contrib/minizip in the zlib distribution.
+    Not by itself, no.  See the directory contrib/minizip in the zlib
+    distribution.

 12. Can zlib handle .Z files?

@@ -92,6 +93,8 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html

 14. How do I install a shared zlib library on Unix?

+    After the above, then:
+
    make install

    However, many flavors of Unix come with a shared zlib already installed.
@@ -99,12 +102,31 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    trying to install it, you may want to check if it's already there! If you
    can #include <zlib.h>, it's there. The -lz option will probably link to it.

-15. I have a question about OttoPDF
+15. I have a question about OttoPDF.

    We are not the authors of OttoPDF. The real author is on the OttoPDF web
-    site Joel Hainley jhainley@myndkryme.com.
+    site: Joel Hainley, jhainley@myndkryme.com.

-16. Why does gzip give an error on a file I make with compress/deflate?
+16. Can zlib decode Flate data in an Adobe PDF file?
+
+    Yes. See http://www.fastio.com/ (ClibPDF), or http://www.pdflib.com/ .
+    To modify PDF forms, see http://sourceforge.net/projects/acroformtool/ .
+
+17. Why am I getting this "register_frame_info not found" error on Solaris?
+
+    After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
+    generates an error such as:
+
+        ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so: 
+        symbol __register_frame_info: referenced symbol not found
+
+    The symbol __register_frame_info is not part of zlib, it is generated by
+    the C compiler (cc or gcc). You must recompile applications using zlib
+    which have this problem. This problem is specific to Solaris. See
+    http://www.sunfreeware.com for Solaris versions of zlib and applications
+    using zlib.
+
+18. Why does gzip give an error on a file I make with compress/deflate?

    The compress and deflate functions produce data in the zlib format, which
    is different and incompatible with the gzip format. The gz* functions in
@@ -112,7 +134,7 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    formats use the same compressed data format internally, but have different
    headers and trailers around the compressed data.

-17. Ok, so why are there two different formats?
+19. Ok, so why are there two different formats?

    The gzip format was designed to retain the directory information about
    a single file, such as the name and last modification date. The zlib
@@ -120,12 +142,20 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    channel applications, and has a much more compact header and trailer and
    uses a faster integrity check than gzip.

-18. Well that's nice, but how do I make a gzip file in memory?
+20. Well that's nice, but how do I make a gzip file in memory?

-    Read RFC 1952 for the gzip header and trailer format, and roll your own
-    gzip formatted data using raw deflate and crc32().
+    You can request that deflate write the gzip format instead of the zlib
+    format using deflateInit2(). You can also request that inflate decode
+    the gzip format using inflateInit2(). Read zlib.h for more details.

-19. Is zlib thread-safe?
+    Note that you cannot specify special gzip header contents (e.g. a file
+    name or modification date), nor will inflate tell you what was in the
+    gzip header. If you need to customize the header or see what's in it,
+    you can use the raw deflate and inflate operations and the crc32()
+    function and roll your own gzip encoding and decoding. Read the gzip
+    RFC 1952 for details of the header and trailer format.
+
+21. Is zlib thread-safe?

    Yes. However any library routines that zlib uses and any application-
    provided memory allocation routines must also be thread-safe. zlib's gz*
@@ -136,22 +166,25 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    Of course, you should only operate on any given zlib or gzip stream from a
    single thread at a time.

-20. Can I use zlib in my commercial application?
+22. Can I use zlib in my commercial application?

    Yes. Please read the license in zlib.h.

-21. Is zlib under the GNU license?
+23. Is zlib under the GNU license?

    No. Please read the license in zlib.h.

-22. The license says that altered source versions must be "plainly marked". So
+24. The license says that altered source versions must be "plainly marked". So
    what exactly do I need to do to meet that requirement?

-    You need to append something the ZLIB_VERSION string in zlib.h. For
-    example, if the version of the base zlib you are altering is "1.2.3", then
-    you could change the string to "1.2.3-fred-mods-v3". You should not change
-    it to "1.2.4" or "1.2.3.1" since the zlib authors would like to reserve
-    those forms of the version for their own use.
+    You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In
+    particular, the final version number needs to be changed to "f", and an
+    identification string should be appended to ZLIB_VERSION. Version numbers
+    x.x.x.f are reserved for modifications to zlib by others than the zlib
+    maintainers. For example, if the version of the base zlib you are altering
+    is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
+    ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also
+    update the version strings in deflate.c and inftrees.c.

    For altered source distributions, you should also note the origin and
    nature of the changes in zlib.h, as well as in ChangeLog and README, along
@@ -161,27 +194,27 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html

    Note that distributing a compiled zlib library along with zlib.h and
    zconf.h is also a source distribution, and so you should change
-    ZLIB_VERSION and note the origin and nature of the changes in zlib.h as you
-    would for a full source distribution.
+    ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
+    in zlib.h as you would for a full source distribution.

-23. Will zlib work on a big-endian or little-endian architecture, and can I
+25. Will zlib work on a big-endian or little-endian architecture, and can I
    exchange compressed data between them?

    Yes and yes.

-24. Will zlib work on a 64-bit machine?
+26. Will zlib work on a 64-bit machine?

    It should. It has been tested on 64-bit machines, and has no dependence
    on any data types being limited to 32-bits in length. If you have any
    difficulties, please provide a complete problem report to zlib@gzip.org

-25. Will zlib decompress data from the PKWare Data Compression Library?
+27. Will zlib decompress data from the PKWare Data Compression Library?

    No. The PKWare DCL uses a completely different compressed data format
    than does PKZIP and zlib. However, you can look in zlib's contrib/blast
    directory for a possible solution to your problem.

-26. Can I access data randomly in a compressed stream?
+28. Can I access data randomly in a compressed stream?

    No, not without some preparation. If when compressing you periodically
    use Z_FULL_FLUSH, carefully write all the pending data at those points,
@@ -189,37 +222,45 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    at those points. You have to be careful to not use Z_FULL_FLUSH too
    often, since it can significantly degrade compression.

-27. Does zlib work on MVS, OS/390, CICS, etc.?
+29. Does zlib work on MVS, OS/390, CICS, etc.?

    We don't know for sure. We have heard occasional reports of success on
    these systems. If you do use it on one of these, please provide us with
    a report, instructions, and patches that we can reference when we get
    these questions. Thanks.

-28. Is there some simpler, easier to read version of inflate I can look at
+30. Is there some simpler, easier to read version of inflate I can look at
    to understand the deflate format?

    First off, you should read RFC 1951. Second, yes. Look in zlib's
    contrib/puff directory.

-29. Does zlib infringe on any patents?
+31. Does zlib infringe on any patents?

    As far as we know, no. In fact, that was originally the whole point behind
    zlib. Look here for some more information:

    http://www.gzip.org/#faq11

-30. Can zlib work with greater than 4 GB of data?
+32. Can zlib work with greater than 4 GB of data?

    Yes. inflate() and deflate() will process any amount of data correctly.
-    However the strm.total_in and strm_total_out counters may be limited to
-    4 GB. The application can easily set up its own counters updated after each
-    call of inflate() or deflate() to count beyond 4 GB. compress() and
-    uncompress() may be limited to 4 GB, since they operate in a single call
-    using unsigned long lengths. gzseek() and gztell() may be limited to 4 GB
-    depending on how zlib is compiled.
+    Each call of inflate() or deflate() is limited to input and output chunks
+    of the maximum value that can be stored in the compiler's "unsigned int"
+    type, but there is no limit to the number of chunks. Note however that the
+    strm.total_in and strm_total_out counters may be limited to 4 GB. These
+    counters are provided as a convenience and are not used internally by
+    inflate() or deflate(). The application can easily set up its own counters
+    updated after each call of inflate() or deflate() to count beyond 4 GB.
+    compress() and uncompress() may be limited to 4 GB, since they operate in a
+    single call. gzseek() and gztell() may be limited to 4 GB depending on how
+    zlib is compiled. See the zlibCompileFlags() function in zlib.h.

-31. Does zlib have any security vulnerabilities?
+    The word "may" appears several times above since there is a 4 GB limit
+    only if the compiler's "long" type is 32 bits. If the compiler's "long"
+    type is 64 bits, then the limit is 16 exabytes.
+
+33. Does zlib have any security vulnerabilities?

    The only one that we are aware of is potentially in gzprintf(). If zlib
    is compiled to use sprintf() or vsprintf(), then there is no protection
@@ -228,7 +269,8 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    hand, if zlib is compiled to use snprintf() or vsnprintf(), which should
    normally be the case, then there is no vulnerability. The ./configure
    script will display warnings if an insecure variation of sprintf() will
-    be used by gzprintf().
+    be used by gzprintf(). Also the zlibCompileFlags() function will return
+    information on what variant of sprintf() is used by gzprintf().

    If you don't have snprintf() or vsnprintf() and would like one, you can
    find a portable implementation here:
@@ -238,34 +280,35 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    Note that you should be using the most recent version of zlib. Versions
    1.1.3 and before were subject to a double-free vulnerability.

-32. Is there a Java version of zlib?
+34. Is there a Java version of zlib?

    Probably what you want is to use zlib in Java. zlib is already included
-    as part of the Java SDK in the java.util.zip class. If you really want
+    as part of the Java SDK in the java.util.zip package. If you really want
    a version of zlib written in the Java language, look on the zlib home
    page for links: http://www.zlib.org/

-33. I get this or that compiler or source-code scanner warning when I crank it
-    up to maximally-pendantic. Can't you guys write proper code?
+35. I get this or that compiler or source-code scanner warning when I crank it
+    up to maximally-pedantic. Can't you guys write proper code?

    Many years ago, we gave up attempting to avoid warnings on every compiler
    in the universe. It just got to be a waste of time, and some compilers
    were downright silly. So now, we simply make sure that the code always
    works.

-34. Will zlib read the (insert any ancient or arcane format here) compressed
+36. Will zlib read the (insert any ancient or arcane format here) compressed
    data format?

    Probably not. Look in the comp.compression FAQ for pointers to various
    formats and associated software.

-35. How can I encrypt/decrypt zip files with zlib?
+37. How can I encrypt/decrypt zip files with zlib?

-    zlib doesn't support encryption. PKZIP encryption is very weak and can be
-    broken with freely available programs. To get strong encryption, use gpg
-    which already includes zlib compression.
+    zlib doesn't support encryption. The original PKZIP encryption is very weak
+    and can be broken with freely available programs. To get strong encryption,
+    use GnuPG, http://www.gnupg.org/ , which already includes zlib compression.
+    For PKZIP compatible "encryption", look at http://www.info-zip.org/

-36. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?
+38. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?

    "gzip" is the gzip format, and "deflate" is the zlib format. They should
    probably have called the second one "zlib" instead to avoid confusion
@@ -279,14 +322,16 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    for), using the "gzip" transfer encoding is probably more reliable due to
    an unfortunate choice of name on the part of the HTTP 1.1 authors.

-37. Does zlib support the new "Deflate64" format introduced by PKWare?
+    Bottom line: use the gzip format for HTTP 1.1 encoding.
+
+39. Does zlib support the new "Deflate64" format introduced by PKWare?

    No. PKWare has apparently decided to keep that format proprietary, since
    they have not documented it as they have previous compression formats.
    In any case, the compression improvements are so modest compared to other
    more modern approaches, that it's not worth the effort to implement.

-38. Can you please sign these lengthy legal documents and fax them back to us
+40. Can you please sign these lengthy legal documents and fax them back to us
    so that we can use your software in our product?

-    No. Go away.
+    No. Go away. Shoo.
--- a/6
+++ b/6
@@ -8,11 +8,11 @@ algorithm.txt   description of the (de)compression algorithm
 configure       configure script for Unix
 zconf.in.h      template for zconf.h (used by configure)

-aix/            instructions for building an AIX shared library
-msdos/		makefiles for MSDOS
+msdos/          makefiles for MSDOS
 old/            makefiles for various architectures and zlib documentation
                files that have not yet been updated for zlib 1.2.x
-win32/		makefiles for Windows
+qnx/            makefiles for QNX
+win32/          makefiles for Windows

                zlib public header files (must be kept):
 zconf.h
--- a/95
+++ b/95
@@ -3,10 +3,14 @@
 # For conditions of distribution and use, see copyright notice in zlib.h

 # To compile and test, type:
-#   ./configure; make test
+#    ./configure; make test
 # The call of configure is optional if you don't have special requirements
 # If you wish to build zlib as a shared library, use: ./configure -s

+# To use the asm code, type:
+#    cp contrib/asm?86/match.S ./match.S
+#    make LOC=-DASMV OBJA=match.o
+
 # To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
 #    make install
 # To install in $HOME instead of /usr/local, use:
@@ -24,19 +28,23 @@ LDFLAGS=libz.a
 LDSHARED=$(CC)
 CPP=$(CC) -E

-VER=1.2.0.1
 LIBS=libz.a
 SHAREDLIB=libz.so
+SHAREDLIBV=libz.so.1.2.1.1
+SHAREDLIBM=libz.so.1

 AR=ar rc
 RANLIB=ranlib
 TAR=tar
 SHELL=/bin/sh
+EXE=

 prefix = /usr/local
 exec_prefix = ${prefix}
 libdir = ${exec_prefix}/lib
 includedir = ${prefix}/include
+mandir = ${prefix}/share/man
+man3dir = ${mandir}/man3

 OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
       zutil.o inflate.o infback.o inftrees.o inffast.o
@@ -46,20 +54,7 @@ OBJA =

 TEST_OBJS = example.o minigzip.o

-# Note: this hasn't been updated for zlib 1.2.0
-DISTFILES = README FAQ INDEX ChangeLog configure Make*[a-z0-9] *.[ch] *.mms \
-  algorithm.txt zlib.3 zlib.html \
-  msdos/Make*[a-z0-9] msdos/zlib.def msdos/zlib.rc \
-  nt/Make*[a-z0-9] nt/zlib.dnt amiga/Make*.??? os2/M*.os2 os2/zlib.def \
-  contrib/RE*.contrib contrib/*.txt contrib/asm386/*.asm contrib/asm386/*.c \
-  contrib/asm386/*.bat contrib/asm386/zlibvc.d?? contrib/asm[56]86/*.?86 \
-  contrib/asm[56]86/*.S contrib/iostream/*.cpp \
-  contrib/iostream/*.h  contrib/iostream2/*.h contrib/iostream2/*.cpp \
-  contrib/untgz/Makefile contrib/untgz/*.c contrib/untgz/*.w32 \
-  contrib/minizip/[CM]*[pe] contrib/minizip/*.[ch] contrib/minizip/*.[td]?? \
-  contrib/delphi*/*.???
-
-all: example minigzip
+all: example$(EXE) minigzip$(EXE)

 check: test
 test: all
@@ -82,78 +77,58 @@ match.o: match.S
 	mv _match.o match.o
 	rm -f _match.s

-$(SHAREDLIB).$(VER): $(OBJS)
+$(SHAREDLIBV): $(OBJS)
 	$(LDSHARED) -o $@ $(OBJS)
-	rm -f $(SHAREDLIB) $(SHAREDLIB).1
+	rm -f $(SHAREDLIB) $(SHAREDLIBM)
 	ln -s $@ $(SHAREDLIB)
-	ln -s $@ $(SHAREDLIB).1
+	ln -s $@ $(SHAREDLIBM)

-example: example.o $(LIBS)
+example$(EXE): example.o $(LIBS)
 	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)

-minigzip: minigzip.o $(LIBS)
+minigzip$(EXE): minigzip.o $(LIBS)
 	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)

 install: $(LIBS)
-	-@if [ ! -d $(exec_prefix) ]; then mkdir $(exec_prefix); fi
-	-@if [ ! -d $(includedir)  ]; then mkdir $(includedir); fi
-	-@if [ ! -d $(libdir) ]; then mkdir $(libdir); fi
+	-@if [ ! -d $(exec_prefix) ]; then mkdir -p $(exec_prefix); fi
+	-@if [ ! -d $(includedir)  ]; then mkdir -p $(includedir); fi
+	-@if [ ! -d $(libdir)      ]; then mkdir -p $(libdir); fi
+	-@if [ ! -d $(man3dir)     ]; then mkdir -p $(man3dir); fi
 	cp zlib.h zconf.h $(includedir)
 	chmod 644 $(includedir)/zlib.h $(includedir)/zconf.h
 	cp $(LIBS) $(libdir)
 	cd $(libdir); chmod 755 $(LIBS)
 	-@(cd $(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
-	cd $(libdir); if test -f $(SHAREDLIB).$(VER); then \
-	  rm -f $(SHAREDLIB) $(SHAREDLIB).1; \
-	  ln -s $(SHAREDLIB).$(VER) $(SHAREDLIB); \
-	  ln -s $(SHAREDLIB).$(VER) $(SHAREDLIB).1; \
+	cd $(libdir); if test -f $(SHAREDLIBV); then \
+	  rm -f $(SHAREDLIB) $(SHAREDLIBM); \
+	  ln -s $(SHAREDLIBV) $(SHAREDLIB); \
+	  ln -s $(SHAREDLIBV) $(SHAREDLIBM); \
 	  (ldconfig || true)  >/dev/null 2>&1; \
 	fi
+	cp zlib.3 $(man3dir)
+	chmod 644 $(man3dir)/zlib.3
 # The ranlib in install is needed on NeXTSTEP which checks file times
 # ldconfig is for Linux

 uninstall:
 	cd $(includedir); \
-	v=$(VER); \
-	if test -f zlib.h; then \
-	  v=`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`; \
-          rm -f zlib.h zconf.h; \
-	fi; \
 	cd $(libdir); rm -f libz.a; \
-	if test -f $(SHAREDLIB).$$v; then \
-	  rm -f $(SHAREDLIB).$$v $(SHAREDLIB) $(SHAREDLIB).1; \
+	if test -f $(SHAREDLIBV); then \
+	  rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
 	fi
+	cd $(man3dir); rm -f zlib.3

 mostlyclean: clean
 clean:
-	rm -f *.o *~ example minigzip libz.a libz.so* foo.gz so_locations \
-	   _match.s maketree
+	rm -f *.o *~ example$(EXE) minigzip$(EXE) \
+	   libz.* foo.gz so_locations \
+	   _match.s maketree contrib/infback9/*.o

 maintainer-clean: distclean
-distclean:	clean
+distclean: clean
 	cp -p Makefile.in Makefile
 	cp -p zconf.in.h zconf.h
-
-zip:
-	mv Makefile Makefile~; cp -p Makefile.in Makefile
-	rm -f test.c ztest*.c contrib/minizip/test.zip
-	v=`sed -n -e 's/\.//g' -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
-	zip -ul9 zlib$$v $(DISTFILES)
-	mv Makefile~ Makefile
-
-dist:
-	echo Warning: this hasn't been updated for zlib 1.2.0 -- don't use
-	mv Makefile Makefile~; cp -p Makefile.in Makefile
-	rm -f test.c ztest*.c contrib/minizip/test.zip
-	d=zlib-`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
-	rm -f $$d.tar.gz; \
-	if test ! -d ../$$d; then rm -f ../$$d; ln -s `pwd` ../$$d; fi; \
-	files=""; \
-	for f in $(DISTFILES); do files="$$files $$d/$$f"; done; \
-	cd ..; \
-	GZIP=-9 $(TAR) chofz $$d/$$d.tar.gz $$files; \
-	if test ! -d $$d; then rm -f $$d; fi
-	mv Makefile~ Makefile
+	rm -f .DS_Store

 tags:
 	etags *.[ch]
@@ -173,7 +148,7 @@ inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o:  zlib.h zconf.h 
+minigzip.o: zlib.h zconf.h
 trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
 uncompr.o: zlib.h zconf.h
 zutil.o: zutil.h zlib.h zconf.h
--- a/Makefile.in
+++ b/Makefile.in
@@ -3,10 +3,14 @@
 # For conditions of distribution and use, see copyright notice in zlib.h

 # To compile and test, type:
-#   ./configure; make test
+#    ./configure; make test
 # The call of configure is optional if you don't have special requirements
 # If you wish to build zlib as a shared library, use: ./configure -s

+# To use the asm code, type:
+#    cp contrib/asm?86/match.S ./match.S
+#    make LOC=-DASMV OBJA=match.o
+
 # To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
 #    make install
 # To install in $HOME instead of /usr/local, use:
@@ -24,19 +28,23 @@ LDFLAGS=libz.a
 LDSHARED=$(CC)
 CPP=$(CC) -E

-VER=1.2.0.1
 LIBS=libz.a
 SHAREDLIB=libz.so
+SHAREDLIBV=libz.so.1.2.1.1
+SHAREDLIBM=libz.so.1

 AR=ar rc
 RANLIB=ranlib
 TAR=tar
 SHELL=/bin/sh
+EXE=

 prefix = /usr/local
 exec_prefix = ${prefix}
 libdir = ${exec_prefix}/lib
 includedir = ${prefix}/include
+mandir = ${prefix}/share/man
+man3dir = ${mandir}/man3

 OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
       zutil.o inflate.o infback.o inftrees.o inffast.o
@@ -46,20 +54,7 @@ OBJA =

 TEST_OBJS = example.o minigzip.o

-# Note: this hasn't been updated for zlib 1.2.0
-DISTFILES = README FAQ INDEX ChangeLog configure Make*[a-z0-9] *.[ch] *.mms \
-  algorithm.txt zlib.3 zlib.html \
-  msdos/Make*[a-z0-9] msdos/zlib.def msdos/zlib.rc \
-  nt/Make*[a-z0-9] nt/zlib.dnt amiga/Make*.??? os2/M*.os2 os2/zlib.def \
-  contrib/RE*.contrib contrib/*.txt contrib/asm386/*.asm contrib/asm386/*.c \
-  contrib/asm386/*.bat contrib/asm386/zlibvc.d?? contrib/asm[56]86/*.?86 \
-  contrib/asm[56]86/*.S contrib/iostream/*.cpp \
-  contrib/iostream/*.h  contrib/iostream2/*.h contrib/iostream2/*.cpp \
-  contrib/untgz/Makefile contrib/untgz/*.c contrib/untgz/*.w32 \
-  contrib/minizip/[CM]*[pe] contrib/minizip/*.[ch] contrib/minizip/*.[td]?? \
-  contrib/delphi*/*.???
-
-all: example minigzip
+all: example$(EXE) minigzip$(EXE)

 check: test
 test: all
@@ -82,78 +77,58 @@ match.o: match.S
 	mv _match.o match.o
 	rm -f _match.s

-$(SHAREDLIB).$(VER): $(OBJS)
+$(SHAREDLIBV): $(OBJS)
 	$(LDSHARED) -o $@ $(OBJS)
-	rm -f $(SHAREDLIB) $(SHAREDLIB).1
+	rm -f $(SHAREDLIB) $(SHAREDLIBM)
 	ln -s $@ $(SHAREDLIB)
-	ln -s $@ $(SHAREDLIB).1
+	ln -s $@ $(SHAREDLIBM)

-example: example.o $(LIBS)
+example$(EXE): example.o $(LIBS)
 	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)

-minigzip: minigzip.o $(LIBS)
+minigzip$(EXE): minigzip.o $(LIBS)
 	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)

 install: $(LIBS)
-	-@if [ ! -d $(exec_prefix) ]; then mkdir $(exec_prefix); fi
-	-@if [ ! -d $(includedir)  ]; then mkdir $(includedir); fi
-	-@if [ ! -d $(libdir) ]; then mkdir $(libdir); fi
+	-@if [ ! -d $(exec_prefix) ]; then mkdir -p $(exec_prefix); fi
+	-@if [ ! -d $(includedir)  ]; then mkdir -p $(includedir); fi
+	-@if [ ! -d $(libdir)      ]; then mkdir -p $(libdir); fi
+	-@if [ ! -d $(man3dir)     ]; then mkdir -p $(man3dir); fi
 	cp zlib.h zconf.h $(includedir)
 	chmod 644 $(includedir)/zlib.h $(includedir)/zconf.h
 	cp $(LIBS) $(libdir)
 	cd $(libdir); chmod 755 $(LIBS)
 	-@(cd $(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
-	cd $(libdir); if test -f $(SHAREDLIB).$(VER); then \
-	  rm -f $(SHAREDLIB) $(SHAREDLIB).1; \
-	  ln -s $(SHAREDLIB).$(VER) $(SHAREDLIB); \
-	  ln -s $(SHAREDLIB).$(VER) $(SHAREDLIB).1; \
+	cd $(libdir); if test -f $(SHAREDLIBV); then \
+	  rm -f $(SHAREDLIB) $(SHAREDLIBM); \
+	  ln -s $(SHAREDLIBV) $(SHAREDLIB); \
+	  ln -s $(SHAREDLIBV) $(SHAREDLIBM); \
 	  (ldconfig || true)  >/dev/null 2>&1; \
 	fi
+	cp zlib.3 $(man3dir)
+	chmod 644 $(man3dir)/zlib.3
 # The ranlib in install is needed on NeXTSTEP which checks file times
 # ldconfig is for Linux

 uninstall:
 	cd $(includedir); \
-	v=$(VER); \
-	if test -f zlib.h; then \
-	  v=`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`; \
-          rm -f zlib.h zconf.h; \
-	fi; \
 	cd $(libdir); rm -f libz.a; \
-	if test -f $(SHAREDLIB).$$v; then \
-	  rm -f $(SHAREDLIB).$$v $(SHAREDLIB) $(SHAREDLIB).1; \
+	if test -f $(SHAREDLIBV); then \
+	  rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
 	fi
+	cd $(man3dir); rm -f zlib.3

 mostlyclean: clean
 clean:
-	rm -f *.o *~ example minigzip libz.a libz.so* foo.gz so_locations \
-	   _match.s maketree
+	rm -f *.o *~ example$(EXE) minigzip$(EXE) \
+	   libz.* foo.gz so_locations \
+	   _match.s maketree contrib/infback9/*.o

 maintainer-clean: distclean
-distclean:	clean
+distclean: clean
 	cp -p Makefile.in Makefile
 	cp -p zconf.in.h zconf.h
-
-zip:
-	mv Makefile Makefile~; cp -p Makefile.in Makefile
-	rm -f test.c ztest*.c contrib/minizip/test.zip
-	v=`sed -n -e 's/\.//g' -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
-	zip -ul9 zlib$$v $(DISTFILES)
-	mv Makefile~ Makefile
-
-dist:
-	echo Warning: this hasn't been updated for zlib 1.2.0 -- don't use
-	mv Makefile Makefile~; cp -p Makefile.in Makefile
-	rm -f test.c ztest*.c contrib/minizip/test.zip
-	d=zlib-`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
-	rm -f $$d.tar.gz; \
-	if test ! -d ../$$d; then rm -f ../$$d; ln -s `pwd` ../$$d; fi; \
-	files=""; \
-	for f in $(DISTFILES); do files="$$files $$d/$$f"; done; \
-	cd ..; \
-	GZIP=-9 $(TAR) chofz $$d/$$d.tar.gz $$files; \
-	if test ! -d $$d; then rm -f $$d; fi
-	mv Makefile~ Makefile
+	rm -f .DS_Store

 tags:
 	etags *.[ch]
@@ -173,7 +148,7 @@ inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o:  zlib.h zconf.h 
+minigzip.o: zlib.h zconf.h
 trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
 uncompr.o: zlib.h zconf.h
 zutil.o: zutil.h zlib.h zconf.h
--- a/36
+++ b/36
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY

-zlib 1.2.0.1 is a general purpose data compression library.  All the code is
+zlib 1.2.1.1 is a general purpose data compression library.  All the code is
 thread safe.  The data format used by the zlib library is described by RFCs
 (Request for Comments) 1950 to 1952 in the files
 http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
@@ -8,7 +8,7 @@ and rfc1952.txt (gzip format). These documents are also available in other
 formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html

 All functions of the compression library are documented in the file zlib.h
-(volunteer to write man pages welcome, contact jloup@gzip.org). A usage example
+(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
 of the library is given in the file example.c which also tests that the library
 is working correctly. Another example is given in the file minigzip.c. The
 compression library itself is composed of all source files except example.c and
@@ -34,43 +34,33 @@ Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
 issue of  Dr. Dobb's Journal; a copy of the article is available in
 http://dogma.net/markn/articles/zlibtool/zlibtool.htm

-The changes made in version 1.2.0.1 are documented in the file ChangeLog.
+The changes made in version 1.2.1.1 are documented in the file ChangeLog.

 Unsupported third party contributions are provided in directory "contrib".

 A Java implementation of zlib is available in the Java Development Kit
-http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html
+http://java.sun.com/j2se/1.4.2/docs/api/java/util/zip/package-summary.html
 See the zlib home page http://www.zlib.org for details.

 A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is in the
 CPAN (Comprehensive Perl Archive Network) sites
 http://www.cpan.org/modules/by-module/Compress/

-A Python interface to zlib written by A.M. Kuchling <amk@magnet.com> is
+A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
 available in Python 1.5 and later versions, see
 http://www.python.org/doc/lib/module-zlib.html

 A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com> is
-availlable at http://www.westend.com/~kupries/doc/trf/man/man.html
+availlable at http://www.oche.de/~akupries/soft/trf/trf_zip.html

 An experimental package to read and write files in .zip format, written on top
-of zlib by Gilles Vollant <info@winimage.com>, is available at
-http://www.winimage.com/zLibDll/unzip.html and also in the contrib/minizip
-directory of zlib.
+of zlib by Gilles Vollant <info@winimage.com>, is available in the
+contrib/minizip directory of zlib.


 Notes for some targets:

- To build a Windows DLL version, include in a DLL project zlib.def, zlib.rc
-  and all .c files except example.c and minigzip.c; compile with -DZLIB_DLL The
-  zlib DLL support was initially done by Alessandro Iacopetti and is now
-  maintained by Gilles Vollant <info@winimage.com>. Check the zlib DLL home
-  page at http://www.winimage.com/zLibDll
-
-  From Visual Basic, you can call the DLL functions which do not take a
-  structure as argument: compress, uncompress and all gz* functions. See
-  contrib/visual-basic.txt for more information, or get
-  http://www.tcfb.com/dowseware/cmp-z-it.zip
+- For Windows DLL versions, please see win32/DLL_FAQ.txt

 - For 64-bit Irix, deflate.c must be compiled without any optimization. With
  -O, one libpng test fails. The test works in 32 bit mode (with the -n32
@@ -87,11 +77,11 @@ Notes for some targets:

 - gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.

- For Turbo C the small model is supported only with reduced performance to
-  avoid any far allocation; it was tested with -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
+- For PalmOs, see http://palmzlib.sourceforge.net/

- For PalmOs, see http://www.cs.uit.no/~perm/PASTA/pilot/software.html Per
-  Harald Myrvang <perm@stud.cs.uit.no>
+- When building a shared, i.e. dynamic library on Mac OS X, the library must be
+  installed before testing (do "make install" before "make test"), since the
+  library location is specified in the library.


 Acknowledgments:
--- a/adler32.c
+++ b/adler32.c
@@ -5,9 +5,10 @@

 /* @(#) $Id$ */

+#define ZLIB_INTERNAL
 #include "zlib.h"

-#define BASE 65521L /* largest prime smaller than 65536 */
+#define BASE 65521UL    /* largest prime smaller than 65536 */
 #define NMAX 5552
 /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */

@@ -17,6 +18,31 @@
 #define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
 #define DO16(buf)   DO8(buf,0); DO8(buf,8);

+#ifdef NO_DIVIDE
+#  define MOD(a) \
+    do { \
+        if (a >= (BASE << 16)) a -= (BASE << 16); \
+        if (a >= (BASE << 15)) a -= (BASE << 15); \
+        if (a >= (BASE << 14)) a -= (BASE << 14); \
+        if (a >= (BASE << 13)) a -= (BASE << 13); \
+        if (a >= (BASE << 12)) a -= (BASE << 12); \
+        if (a >= (BASE << 11)) a -= (BASE << 11); \
+        if (a >= (BASE << 10)) a -= (BASE << 10); \
+        if (a >= (BASE << 9)) a -= (BASE << 9); \
+        if (a >= (BASE << 8)) a -= (BASE << 8); \
+        if (a >= (BASE << 7)) a -= (BASE << 7); \
+        if (a >= (BASE << 6)) a -= (BASE << 6); \
+        if (a >= (BASE << 5)) a -= (BASE << 5); \
+        if (a >= (BASE << 4)) a -= (BASE << 4); \
+        if (a >= (BASE << 3)) a -= (BASE << 3); \
+        if (a >= (BASE << 2)) a -= (BASE << 2); \
+        if (a >= (BASE << 1)) a -= (BASE << 1); \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
+#else
+#  define MOD(a) a %= BASE
+#endif
+
 /* ========================================================================= */
 uLong ZEXPORT adler32(adler, buf, len)
    uLong adler;
@@ -41,8 +67,8 @@ uLong ZEXPORT adler32(adler, buf, len)
            s1 += *buf++;
            s2 += s1;
        } while (--k);
-        s1 %= BASE;
-        s2 %= BASE;
+        MOD(s1);
+        MOD(s2);
    }
    return (s2 << 16) | s1;
 }
--- a/aix/README
+++ b/aix/README
@@ -1,9 +0,0 @@
-To make a shared library:
-
-1. Compile a static library
-2. Use mkexps on that to create libz.exp
-3. Apply the configure.diff patch to configure
-4. Run the new configure to make a new Makefile
-5. Use the new Makefile to make the shared library
-
-Courtesy of dbakker@arrayasolutions.com
--- a/aix/configure.diff
+++ b/aix/configure.diff
@@ -1,57 +0,0 @@
-*** ../orig/zlib-1.1.4/configure	Wed Jul  8 14:19:35 1998
--- configure	Sun Feb  9 11:11:19 2003
-***************
-*** 18,23 ****
--- 18,24 ----
-  # If you have problems, try without defining CC and CFLAGS before reporting
-  # an error.
-  
-+ LDFLAGS="-L. -lz"
-  LIBS=libz.a
-  SHAREDLIB=libz.so
-  VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
-***************
-*** 116,121 ****
--- 117,128 ----
-  	     SFLAGS=${CFLAGS-"-Kconform_pic -O"}
-  	     CFLAGS=${CFLAGS-"-O"}
-  	     LDSHARED=${LDSHARED-"cc -G"};;
-+   AIX*)     
-+ 	     SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
-+ 	     CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
-+ 	     LDTESTSHARED=${LDSHARED-"cc -G"}
-+ 	     LDSHAREDFLAGS="-L. libz.so"
-+ 	     LDSHARED=${LDSHARED-"cc -G"};;
-    # send working options for other systems to support@gzip.org
-    *)         SFLAGS=${CFLAGS-"-O"}
-  	     CFLAGS=${CFLAGS-"-O"}
-***************
-*** 127,135 ****
-    echo Checking for shared library support...
-    # we must test in two steps (cc then ld), required at least on SunOS 4.x
-    if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
-!      test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
-      CFLAGS="$SFLAGS"
-      LIBS="$SHAREDLIB.$VER"
-      echo Building shared library $SHAREDLIB.$VER with $CC.
-    elif test -z "$old_cc" -a -z "$old_cflags"; then
-      echo No shared library suppport.
--- 134,143 ----
-    echo Checking for shared library support...
-    # we must test in two steps (cc then ld), required at least on SunOS 4.x
-    if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
-!      test "`($LDTESTSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
-      CFLAGS="$SFLAGS"
-      LIBS="$SHAREDLIB.$VER"
-+ 	LDFLAGS="$LDSHAREDFLAGS"
-      echo Building shared library $SHAREDLIB.$VER with $CC.
-    elif test -z "$old_cc" -a -z "$old_cflags"; then
-      echo No shared library suppport.
-***************
-*** 209,212 ****
--- 217,221 ----
-  /^exec_prefix *=/s%=.*%=$exec_prefix%
-  /^libdir *=/s%=.*%=$libdir%
-  /^includedir *=/s%=.*%=$includedir%
-+ /^LDFLAGS *=/s%=.*%=$LDFLAGS%
-  " > Makefile
--- a/aix/mkexps
+++ b/aix/mkexps
@@ -1,37 +0,0 @@
-#!/bin/ksh
-#
-# mkexps - make export list
-# This program creates an export list by combining all the "." and normal names
-# into one list.
-#
-if [[ "$#" -ne 1 ]]
-then
-    print "Usage: mkexps ArchiveFile"
-    exit -2
-fi
-if [[ ! -f $1 ]]
-then
-    print "mkexps: Cannot open file \"$1\""
-    exit -1
-fi
-
-dump -g $1 | awk '
-BEGIN {
-        top = 1
-}
-/^[ ]*[0-9][0-9]*/ {
-    if ( (n = index( $2, "." )) > 0 ) {
-        export_array[ top++ ] = substr( $2, n+1, length( $2 ))
-    }
-    else {
-	export_array[ top++ ] = $2
-    }
-}
-
-END {
-    for ( i = 1; i < top; i++ )
-    {
-	print export_array[ i ]
-    }
-
-}' | sort | uniq
--- a/algorithm.txt
+++ b/algorithm.txt
@@ -206,4 +206,4 @@ Compression,'' IEEE Transactions on Information Theory, Vol. 23, No. 3,
 pp. 337-343.

 ``DEFLATE Compressed Data Format Specification'' available in
-ftp://ds.internic.net/rfc/rfc1951.txt
+http://www.ietf.org/rfc/rfc1951.txt
--- a/amiga/Makefile.pup
+++ b/amiga/Makefile.pup
@@ -0,0 +1,66 @@
+# Amiga powerUP (TM) Makefile
+# makefile for libpng and SAS C V6.58/7.00 PPC compiler
+# Copyright (C) 1998 by Andreas R. Kleinert
+
+LIBNAME	= libzip.a
+
+CC	= scppc
+CFLAGS	= NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL \
+	  OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8 NOVER
+AR	= ppc-amigaos-ar cr
+RANLIB	= ppc-amigaos-ranlib
+LD	= ppc-amigaos-ld -r
+LDFLAGS	= -o
+LDLIBS	= LIB:scppc.a LIB:end.o
+RM	= delete quiet
+
+OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
+       zutil.o inflate.o infback.o inftrees.o inffast.o
+
+TEST_OBJS = example.o minigzip.o
+
+all: example minigzip
+
+check: test
+test: all
+	example
+	echo hello world | minigzip | minigzip -d
+
+$(LIBNAME): $(OBJS)
+	$(AR) $@ $(OBJS)
+	-$(RANLIB) $@
+
+example: example.o $(LIBNAME)
+	$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
+
+minigzip: minigzip.o $(LIBNAME)
+	$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
+
+mostlyclean: clean
+clean:
+	$(RM) *.o example minigzip $(LIBNAME) foo.gz
+
+zip:
+	zip -ul9 zlib README ChangeLog Makefile Make????.??? Makefile.?? \
+	  descrip.mms *.[ch]
+
+tgz:
+	cd ..; tar cfz zlib/zlib.tgz zlib/README zlib/ChangeLog zlib/Makefile \
+	  zlib/Make????.??? zlib/Makefile.?? zlib/descrip.mms zlib/*.[ch]
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+adler32.o: zlib.h zconf.h
+compress.o: zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
+deflate.o: deflate.h zutil.h zlib.h zconf.h
+example.o: zlib.h zconf.h
+gzio.o: zutil.h zlib.h zconf.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inftrees.o: zutil.h zlib.h zconf.h inftrees.h
+minigzip.o: zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
+uncompr.o: zlib.h zconf.h
+zutil.o: zutil.h zlib.h zconf.h
--- a/old/amiga/Makefile.sas
+++ b/old/amiga/Makefile.sas
@@ -10,22 +10,24 @@ CFLAGS=OPT
 LDFLAGS=LIB z.lib

 SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \
-       NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX 
+       NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \
+       DEF=POSTINC

 OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
-       zutil.o inflate.o infblock.o inftrees.o infcodes.o infutil.o inffast.o
+       zutil.o inflate.o infback.o inftrees.o inffast.o

 TEST_OBJS = example.o minigzip.o

 all: SCOPTIONS example minigzip

+check: test
 test: all
-	`cd`/example
+	example
 	echo hello world | minigzip | minigzip -d 

 install: z.lib
-	copy zlib.h zconf.h INCLUDE: clone
-	copy z.lib LIB: clone
+	copy clone zlib.h zconf.h INCLUDE:
+	copy clone z.lib LIB:

 z.lib: $(OBJS)
 	oml z.lib r $(OBJS)
@@ -36,29 +38,28 @@ example: example.o z.lib
 minigzip: minigzip.o z.lib
 	$(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS)

+mostlyclean: clean
 clean:
-	-delete force quiet *.o example minigzip z.lib foo.gz *.lnk SCOPTIONS
+	-delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS

-SCOPTIONS: Smakefile
-        copy to $@ <from <
+SCOPTIONS: Makefile.sas
+	copy to $@ <from <
 $(SCOPTIONS)
 <

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-adler32.o: zutil.h zlib.h zconf.h
+adler32.o: zlib.h zconf.h
 compress.o: zlib.h zconf.h
-crc32.o: zutil.h zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
 deflate.o: deflate.h zutil.h zlib.h zconf.h
 example.o: zlib.h zconf.h
 gzio.o: zutil.h zlib.h zconf.h
-infblock.o: zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h
-infcodes.o: zutil.h zlib.h zconf.h inftrees.h infutil.h infcodes.h inffast.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h infutil.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h infblock.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-infutil.o: zutil.h zlib.h zconf.h inftrees.h infutil.h
 minigzip.o: zlib.h zconf.h
-trees.o: deflate.h zutil.h zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
 uncompr.o: zlib.h zconf.h
 zutil.o: zutil.h zlib.h zconf.h
--- a/as400/bndsrc
+++ b/as400/bndsrc
@@ -0,0 +1,132 @@
+STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
+
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+/*   Version 1.1.3 entry points.                                    */
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+
+/********************************************************************/
+/*   *MODULE      ADLER32      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("adler32")
+
+/********************************************************************/
+/*   *MODULE      COMPRESS     ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("compress")
+  EXPORT SYMBOL("compress2")
+
+/********************************************************************/
+/*   *MODULE      CRC32        ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("crc32")
+  EXPORT SYMBOL("get_crc_table")
+
+/********************************************************************/
+/*   *MODULE      DEFLATE      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("deflate")
+  EXPORT SYMBOL("deflateEnd")
+  EXPORT SYMBOL("deflateSetDictionary")
+  EXPORT SYMBOL("deflateCopy")
+  EXPORT SYMBOL("deflateReset")
+  EXPORT SYMBOL("deflateParams")
+  EXPORT SYMBOL("deflatePrime")
+  EXPORT SYMBOL("deflateInit_")
+  EXPORT SYMBOL("deflateInit2_")
+
+/********************************************************************/
+/*   *MODULE      GZIO         ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("gzopen")
+  EXPORT SYMBOL("gzdopen")
+  EXPORT SYMBOL("gzsetparams")
+  EXPORT SYMBOL("gzread")
+  EXPORT SYMBOL("gzwrite")
+  EXPORT SYMBOL("gzprintf")
+  EXPORT SYMBOL("gzputs")
+  EXPORT SYMBOL("gzgets")
+  EXPORT SYMBOL("gzputc")
+  EXPORT SYMBOL("gzgetc")
+  EXPORT SYMBOL("gzflush")
+  EXPORT SYMBOL("gzseek")
+  EXPORT SYMBOL("gzrewind")
+  EXPORT SYMBOL("gztell")
+  EXPORT SYMBOL("gzeof")
+  EXPORT SYMBOL("gzclose")
+  EXPORT SYMBOL("gzerror")
+
+/********************************************************************/
+/*   *MODULE      INFLATE      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("inflate")
+  EXPORT SYMBOL("inflateEnd")
+  EXPORT SYMBOL("inflateSetDictionary")
+  EXPORT SYMBOL("inflateSync")
+  EXPORT SYMBOL("inflateReset")
+  EXPORT SYMBOL("inflateInit_")
+  EXPORT SYMBOL("inflateInit2_")
+  EXPORT SYMBOL("inflateSyncPoint")
+
+/********************************************************************/
+/*   *MODULE      UNCOMPR      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("uncompress")
+
+/********************************************************************/
+/*   *MODULE      ZUTIL        ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("zlibVersion")
+  EXPORT SYMBOL("zError")
+
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+/*   Version 1.2.1 additional entry points.                         */
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+
+/********************************************************************/
+/*   *MODULE      COMPRESS     ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("compressBound")
+
+/********************************************************************/
+/*   *MODULE      DEFLATE      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("deflateBound")
+
+/********************************************************************/
+/*   *MODULE      GZIO         ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("gzungetc")
+  EXPORT SYMBOL("gzclearerr")
+
+/********************************************************************/
+/*   *MODULE      INFBACK      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("inflateBack")
+  EXPORT SYMBOL("inflateBackEnd")
+  EXPORT SYMBOL("inflateBackInit_")
+
+/********************************************************************/
+/*   *MODULE      INFLATE      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("inflateCopy")
+
+/********************************************************************/
+/*   *MODULE      ZUTIL        ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("zlibCompileFlags")
+
+ENDPGMEXP
--- a/as400/compile.clp
+++ b/as400/compile.clp
@@ -0,0 +1,123 @@
+/******************************************************************************/
+/*                                                                            */
+/*  ZLIB                                                                      */
+/*                                                                            */
+/*    Compile sources into modules and link them into a service program.      */
+/*                                                                            */
+/******************************************************************************/
+
+             PGM
+
+/*      Configuration adjustable parameters.                                  */
+
+             DCL        VAR(&SRCLIB) TYPE(*CHAR) LEN(10) +
+                          VALUE('ZLIB')                         /* Source library. */
+             DCL        VAR(&SRCFILE) TYPE(*CHAR) LEN(10) +
+                          VALUE('SOURCES')                      /* Source member file. */
+             DCL        VAR(&CTLFILE) TYPE(*CHAR) LEN(10) +
+                          VALUE('TOOLS')                        /* Control member file. */
+
+             DCL        VAR(&MODLIB) TYPE(*CHAR) LEN(10) +
+                          VALUE('ZLIB')                         /* Module library. */
+
+             DCL        VAR(&SRVLIB) TYPE(*CHAR) LEN(10) +
+                          VALUE('LGPL')                         /* Service program library. */
+
+             DCL        VAR(&CFLAGS) TYPE(*CHAR) +
+                          VALUE('OPTIMIZE(40)')                 /* Compile options. */
+
+
+/*      Working storage.                                                      */
+
+             DCL        VAR(&CMDLEN) TYPE(*DEC) LEN(15 5) VALUE(300)    /* Command length. */
+             DCL        VAR(&CMD) TYPE(*CHAR) LEN(512)
+
+
+/*      Compile sources into modules.                                         */
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/ADLER32)               SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/COMPRESS)              SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/CRC32)                 SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/DEFLATE)               SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/GZIO)                  SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/INFBACK)               SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/INFFAST)               SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/INFLATE)               SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/INFTREES)              SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/TREES)                 SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/UNCOMPR)               SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+             CHGVAR     VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT  +
+                        '/ZUTIL)                 SRCFILE(' *TCAT               +
+                        &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT                 +
+                        ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+             CALL       PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+
+/*      Link modules into a service program.                                  */
+
+             CRTSRVPGM  SRVPGM(&SRVLIB/ZLIB) +
+                          MODULE(&MODLIB/ADLER32     &MODLIB/COMPRESS    +
+                                 &MODLIB/CRC32       &MODLIB/DEFLATE     +
+                                 &MODLIB/GZIO        &MODLIB/INFBACK     +
+                                 &MODLIB/INFFAST     &MODLIB/INFLATE     +
+                                 &MODLIB/INFTREES    &MODLIB/TREES       +
+                                 &MODLIB/UNCOMPR     &MODLIB/ZUTIL)      +
+                          SRCFILE(&SRCLIB/&CTLFILE) SRCMBR(BNDSRC) +
+                          TEXT('ZLIB 1.2.1') TGTRLS(V4R4M0)
+
+             ENDPGM
--- a/as400/readme.txt
+++ b/as400/readme.txt
@@ -0,0 +1,111 @@
+        ZLIB version 1.2.1 for AS400 installation instructions
+
+I) From an AS400 *SAVF file:
+
+1)      Unpacking archive to an AS400 save file
+
+On the AS400:
+
+_       Create the ZLIB AS400 library:
+
+        CRTLIB LIB(ZLIB) TYPE(PROD) TEXT('ZLIB compression API library')
+
+_       Create a work save file, for example:
+
+                CRTSAVF FILE(ZLIB/ZLIBSAVF)
+
+On a PC connected to the target AS400:
+
+_       Unpack the save file image to a PC file "ZLIBSAVF"
+_       Upload this file into the save file on the AS400, for example
+                using ftp in BINARY mode.
+
+
+2)      Populating the ZLIB AS400 source library
+
+On the AS400:
+
+_       Extract the saved objects into the ZLIB AS400 library using:
+
+RSTOBJ OBJ(*ALL) SAVLIB(ZLIB) DEV(*SAVF) SAVF(ZLIB/ZLIBSAVF) RSTLIB(ZLIB)
+
+
+3)      Customize installation:
+
+_       Edit CL member ZLIB/TOOLS(COMPILE) and change parameters if needed,
+                according to the comments.
+
+_       Compile this member with:
+
+        CRTCLPGM PGM(ZLIB/COMPILE) SRCFILE(ZLIB/TOOLS) SRCMBR(COMPILE)
+
+
+4)      Compile and generate the service program:
+
+_       This can now be done by executing:
+
+        CALL PGM(ZLIB/COMPILE)
+
+
+
+II) From the original source distribution:
+
+1)      On the AS400, create the source library:
+
+        CRTLIB LIB(ZLIB) TYPE(PROD) TEXT('ZLIB compression API library')
+
+2)      Create the source files:
+
+        CRTSRCPF FILE(ZLIB/SOURCES) RCDLEN(112) TEXT('ZLIB library modules')
+        CRTSRCPF FILE(ZLIB/H)       RCDLEN(112) TEXT('ZLIB library includes')
+        CRTSRCPF FILE(ZLIB/TOOLS)   RCDLEN(112) TEXT('ZLIB library control utilities')
+
+3)      From the machine hosting the distribution files, upload them (with
+                FTP in text mode, for example) according to the following table:
+
+    Original    AS400   AS400    AS400 AS400
+    file        file    member   type  description
+                SOURCES                Original ZLIB C subprogram sources
+    adler32.c           ADLER32  C     ZLIB - Compute the Adler-32 checksum of a dta strm
+    compress.c          COMPRESS C     ZLIB - Compress a memory buffer
+    crc32.c             CRC32    C     ZLIB - Compute the CRC-32 of a data stream
+    deflate.c           DEFLATE  C     ZLIB - Compress data using the deflation algorithm
+    gzio.c              GZIO     C     ZLIB - IO on .gz files
+    infback.c           INFBACK  C     ZLIB - Inflate using a callback interface
+    inffast.c           INFFAST  C     ZLIB - Fast proc. literals & length/distance pairs
+    inflate.c           INFLATE  C     ZLIB - Interface to inflate modules
+    inftrees.c          INFTREES C     ZLIB - Generate Huffman trees for efficient decode
+    trees.c             TREES    C     ZLIB - Output deflated data using Huffman coding
+    uncompr.c           UNCOMPR  C     ZLIB - Decompress a memory buffer
+    zutil.c             ZUTIL    C     ZLIB - Target dependent utility functions
+                H                      Original ZLIB C and ILE/RPG include files
+    crc32.h             CRC32    C     ZLIB - CRC32 tables
+    deflate.h           DEFLATE  C     ZLIB - Internal compression state
+    inffast.h           INFFAST  C     ZLIB - Header to use inffast.c
+    inffixed.h          INFFIXED C     ZLIB - Table for decoding fixed codes
+    inflate.h           INFLATE  C     ZLIB - Internal inflate state definitions
+    inftrees.h          INFTREES C     ZLIB - Header to use inftrees.c
+    trees.h             TREES    C     ZLIB - Created automatically with -DGEN_TREES_H
+    zconf.h             ZCONF    C     ZLIB - Compression library configuration
+    zlib.h              ZLIB     C     ZLIB - Compression library C user interface
+    as400/zlib.inc      ZLIB.INC RPGLE ZLIB - Compression library ILE RPG user interface
+    zutil.h             ZUTIL    C     ZLIB - Internal interface and configuration
+                TOOLS                  Building source software & AS/400 README
+    as400/bndsrc        BNDSRC         Entry point exportation list
+    as400/compile.clp   COMPILE  CLP   Compile sources & generate service program
+    as400/readme.txt    README   TXT   Installation instructions
+
+4)      Continue as in I)3).
+
+
+
+
+Notes:  For AS400 ILE RPG programmers, a /copy member defining the ZLIB
+                API prototypes for ILE RPG can be found in ZLIB/H(ZLIB.INC).
+                Please read comments in this member for more information.
+
+        Remember that most foreign textual data are ASCII coded: this
+                implementation does not handle conversion from/to ASCII, so
+                text data code conversions must be done explicitely.
+
+        Always open zipped files in binary mode.
--- a/as400/zlib.inc
+++ b/as400/zlib.inc
@@ -0,0 +1,327 @@
+      *  ZLIB.INC - Interface to the general purpose compression library
+      *
+      *  ILE RPG400 version by Patrick Monnerat, DATASPHERE.
+      *  Version 1.2.1.1
+      *
+      *
+      *  WARNING:
+      *     Procedures inflateInit(), inflateInit2(), deflateInit(),
+      *         deflateInit2() and inflateBackInit() need to be called with
+      *         two additional arguments:
+      *         the package version string and the stream control structure.
+      *         size. This is needed because RPG lacks some macro feature.
+      *         Call these procedures as:
+      *             inflateInit(...: ZLIB_VERSION: %size(z_stream))
+      *
+      /if not defined(ZLIB_H_)
+      /define ZLIB_H_
+      *
+      **************************************************************************
+      *                               Constants
+      **************************************************************************
+      *
+     D ZLIB_VERSION    C                   '1.2.1.1'                            Header's version
+     D ZLIB_VERNUM     C                   X'1211'
+      *
+     D Z_NO_FLUSH      C                   0
+     D Z_SYNC_FLUSH    C                   2
+     D Z_FULL_FLUSH    C                   3
+     D Z_FINISH        C                   4
+     D Z_BLOCK         C                   5
+      *
+     D Z_OK            C                   0
+     D Z_STREAM_END    C                   1
+     D Z_NEED_DICT     C                   2
+     D Z_ERRNO         C                   -1
+     D Z_STREAM_ERROR  C                   -2
+     D Z_DATA_ERROR    C                   -3
+     D Z_MEM_ERROR     C                   -4
+     D Z_BUF_ERROR     C                   -5
+     DZ_VERSION_ERROR  C                   -6
+      *
+     D Z_NO_COMPRESSION...
+     D                 C                   0
+     D Z_BEST_SPEED    C                   1
+     D Z_BEST_COMPRESSION...
+     D                 C                   9
+     D Z_DEFAULT_COMPRESSION...
+     D                 C                   -1
+      *
+     D Z_FILTERED      C                   1
+     D Z_HUFFMAN_ONLY  C                   2
+     D Z_RLE           C                   3
+     D Z_DEFAULT_STRATEGY...
+     D                 C                   0
+      *
+     D Z_BINARY        C                   0
+     D Z_ASCII         C                   1
+     D Z_UNKNOWN       C                   2
+      *
+     D Z_DEFLATED      C                   8
+      *
+     D Z_NULL          C                   0
+      *
+      **************************************************************************
+      *                                 Types
+      **************************************************************************
+      *
+     D z_streamp       S               *                                        Stream struct ptr
+     D gzFile          S               *                                        File pointer
+     D z_off_t         S             10i 0                                      Stream offsets
+      *
+      **************************************************************************
+      *                               Structures
+      **************************************************************************
+      *
+      *  The GZIP encode/decode stream support structure.
+      *
+     D z_stream        DS                  align based(z_streamp)
+     D  zs_next_in                     *                                        Next input byte
+     D  zs_avail_in                  10U 0                                      Byte cnt at next_in
+     D  zs_total_in                  10U 0                                      Total bytes read
+     D  zs_next_out                    *                                        Output buffer ptr
+     D  zs_avail_out                 10U 0                                      Room left @ next_out
+     D  zs_total_out                 10U 0                                      Total bytes written
+     D  zs_msg                         *                                        Last errmsg or null
+     D  zs_state                       *                                        Internal state
+     D  zs_zalloc                      *   procptr                              Int. state allocator
+     D  zs_free                        *   procptr                              Int. state dealloc.
+     D  zs_opaque                      *                                        Private alloc. data
+     D  zs_data_type                 10i 0                                      ASC/BIN best guess
+     D  zs_adler                     10u 0                                      Uncompr. adler32 val
+     D                               10U 0                                      Reserved
+     D                               10U 0                                      Ptr. alignment
+      *
+      **************************************************************************
+      *                     Utility function prototypes
+      **************************************************************************
+      *
+     D compress        PR            10I 0 extproc('compress')
+     D  dest                      32767    options(*varsize)                    Destination buffer
+     D  destLen                      10U 0                                      Destination length
+     D  source                    32767    const options(*varsize)              Source buffer
+     D  sourceLen                    10u 0 value                                Source length
+      *
+     D compress2       PR            10I 0 extproc('compress2')
+     D  dest                      32767    options(*varsize)                    Destination buffer
+     D  destLen                      10U 0                                      Destination length
+     D  source                    32767    const options(*varsize)              Source buffer
+     D  sourceLen                    10U 0 value                                Source length
+     D  level                        10I 0 value                                Compression level
+      *
+     D compressBound   PR            10U 0 extproc('compressBound')
+     D  sourceLen                    10U 0 value
+      *
+     D uncompress      PR            10I 0 extproc('uncompress')
+     D  dest                      32767    options(*varsize)                    Destination buffer
+     D  destLen                      10U 0                                      Destination length
+     D  source                    32767    const options(*varsize)              Source buffer
+     D  sourceLen                    10U 0 value                                Source length
+      *
+     D gzopen          PR                  extproc('gzopen')
+     D                                     like(gzFile)
+     D  path                           *   value options(*string)               File pathname
+     D  mode                           *   value options(*string)               Open mode
+      *
+     D gzdopen         PR                  extproc('gzdopen')
+     D                                     like(gzFile)
+     D  fd                           10i 0 value                                File descriptor
+     D  mode                           *   value options(*string)               Open mode
+      *
+     D gzsetparams     PR            10I 0 extproc('gzsetparams')
+     D  file                               value like(gzFile)                   File pointer
+     D  level                        10I 0 value
+     D  strategy                     10i 0 value
+      *
+     D gzread          PR            10I 0 extproc('gzread')
+     D  file                               value like(gzFile)                   File pointer
+     D  buf                       32767    options(*varsize)                    Buffer
+     D  len                          10u 0 value                                Buffer length
+      *
+     D gzwrite         PR            10I 0 extproc('gzwrite')
+     D  file                               value like(gzFile)                   File pointer
+     D  buf                       32767    const options(*varsize)              Buffer
+     D  len                          10u 0 value                                Buffer length
+      *
+     D gzputs          PR            10I 0 extproc('gzputs')
+     D  file                               value like(gzFile)                   File pointer
+     D  s                              *   value options(*string)               String to output
+      *
+     D gzgets          PR              *   extproc('gzgets')
+     D  file                               value like(gzFile)                   File pointer
+     D  buf                       32767    options(*varsize)                    Read buffer
+     D  len                          10i 0 value                                Buffer length
+      *
+     D gzflush         PR            10i 0 extproc('gzflush')
+     D  file                               value like(gzFile)                   File pointer
+     D  flush                        10I 0 value                                Type of flush
+      *
+     D gzseek          PR                  extproc('gzseek')
+     D                                     like(z_off_t)
+     D  file                               value like(gzFile)                   File pointer
+     D  offset                             value like(z_off_t)                  Offset
+     D  whence                       10i 0 value                                Origin
+      *
+     D gzrewind        PR            10i 0 extproc('gzrewind')
+     D  file                               value like(gzFile)                   File pointer
+      *
+     D gztell          PR                  extproc('gztell')
+     D                                     like(z_off_t)
+     D  file                               value like(gzFile)                   File pointer
+      *
+     D gzeof           PR            10i 0 extproc('gzeof')
+     D  file                               value like(gzFile)                   File pointer
+      *
+     D gzclose         PR            10i 0 extproc('gzclose')
+     D  file                               value like(gzFile)                   File pointer
+      *
+     D gzerror         PR              *   extproc('gzerror')                   Error string
+     D  file                               value like(gzFile)                   File pointer
+     D  errnum                       10I 0                                      Error code
+      *
+     D gzclearerr      PR                  extproc('gzclearerr')
+     D  file                               value like(gzFile)                   File pointer
+      *
+      **************************************************************************
+      *                        Basic function prototypes
+      **************************************************************************
+      *
+     D zlibVersion     PR              *   extproc('zlibVersion')               Version string
+      *
+     D deflateInit     PR            10I 0 extproc('deflateInit_')              Init. compression
+     D  strm                               like(z_stream)                       Compression stream
+     D  level                        10I 0 value                                Compression level
+     D  version                        *   value options(*string)               Version string
+     D  stream_size                  10i 0 value                                Stream struct. size
+      *
+     D deflate         PR            10I 0 extproc('deflate')                   Compress data
+     D  strm                               like(z_stream)                       Compression stream
+     D  flush                        10I 0 value                                Flush type required
+      *
+     D deflateEnd      PR            10I 0 extproc('deflateEnd')                Termin. compression
+     D  strm                               like(z_stream)                       Compression stream
+      *
+     D inflateInit     PR            10I 0 extproc('inflateInit_')              Init. expansion
+     D  strm                               like(z_stream)                       Expansion stream
+     D  version                        *   value options(*string)               Version string
+     D  stream_size                  10i 0 value                                Stream struct. size
+      *
+     D inflate         PR            10I 0 extproc('inflate')                   Expand data
+     D  strm                               like(z_stream)                       Expansion stream
+     D  flush                        10I 0 value                                Flush type required
+      *
+     D inflateEnd      PR            10I 0 extproc('inflateEnd')                Termin. expansion
+     D  strm                               like(z_stream)                       Expansion stream
+      *
+      **************************************************************************
+      *                        Advanced function prototypes
+      **************************************************************************
+      *
+     D deflateInit2    PR            10I 0 extproc('deflateInit2_')             Init. compression
+     D  strm                               like(z_stream)                       Compression stream
+     D  level                        10I 0 value                                Compression level
+     D  method                       10I 0 value                                Compression method
+     D  windowBits                   10I 0 value                                log2(window size)
+     D  memLevel                     10I 0 value                                Mem/cmpress tradeoff
+     D  strategy                     10I 0 value                                Compression stategy
+     D  version                        *   value options(*string)               Version string
+     D  stream_size                  10i 0 value                                Stream struct. size
+      *
+     D deflateSetDictionary...
+     D                 PR            10I 0 extproc('deflateSetDictionary')      Init. dictionary
+     D  strm                               like(z_stream)                       Compression stream
+     D  dictionary                32767    const options(*varsize)              Dictionary bytes
+     D  dictLength                   10U 0 value                                Dictionary length
+      *
+     D deflateCopy     PR            10I 0 extproc('deflateCopy')               Compress strm 2 strm
+     D  dest                               like(z_stream)                       Destination stream
+     D  source                             like(z_stream)                       Source stream
+      *
+     D deflateReset    PR            10I 0 extproc('deflateReset')              End and init. stream
+     D  strm                               like(z_stream)                       Compression stream
+      *
+     D deflateParams   PR            10I 0 extproc('deflateParams')             Change level & strat
+     D  strm                               like(z_stream)                       Compression stream
+     D  level                        10I 0 value                                Compression level
+     D  strategy                     10I 0 value                                Compression stategy
+      *
+     D deflateBound    PR            10U 0 extproc('deflateBound')              Change level & strat
+     D  strm                               like(z_stream)                       Compression stream
+     D  sourcelen                    10U 0 value                                Compression level
+      *
+     D deflatePrime    PR            10I 0 extproc('deflatePrime')              Change level & strat
+     D  strm                               like(z_stream)                       Compression stream
+     D  bits                         10I 0 value                                Number of bits to insert
+     D  value                        10I 0 value                                Bits to insert
+      *
+     D inflateInit2    PR            10I 0 extproc('inflateInit2_')             Init. expansion
+     D  strm                               like(z_stream)                       Expansion stream
+     D  windowBits                   10I 0 value                                log2(window size)
+     D  version                        *   value options(*string)               Version string
+     D  stream_size                  10i 0 value                                Stream struct. size
+      *
+     D inflateSetDictionary...
+     D                 PR            10I 0 extproc('inflateSetDictionary')      Init. dictionary
+     D  strm                               like(z_stream)                       Expansion stream
+     D  dictionary                32767    const options(*varsize)              Dictionary bytes
+     D  dictLength                   10U 0 value                                Dictionary length
+      *
+     D inflateSync     PR            10I 0 extproc('inflateSync')               Sync. expansion
+     D  strm                               like(z_stream)                       Expansion stream
+      *
+     D inflateCopy     PR            10I 0 extproc('inflateCopy')
+     D  dest                               like(z_stream)                       Destination stream
+     D  source                             like(z_stream)                       Source stream
+      *
+     D inflateReset    PR            10I 0 extproc('inflateReset')              End and init. stream
+     D  strm                               like(z_stream)                       Expansion stream
+      *
+     D inflateBackInit...
+     D                 PR            10I 0 extproc('inflateBackInit_')
+     D  strm                               like(z_stream)                       Expansion stream
+     D  windowBits                   10I 0 value                                Log2(buffer size)
+     D  window                    32767    options(*varsize)                    Buffer
+     D  version                        *   value options(*string)               Version string
+     D  stream_size                  10i 0 value                                Stream struct. size
+      *
+     D inflateBack     PR            10I 0 extproc('inflateBack')
+     D  strm                               like(z_stream)                       Expansion stream
+     D  in                             *   value procptr                        Input function
+     D  in_desc                        *   value                                Input descriptor
+     D  out                            *   value procptr                        Output function
+     D  out_desc                       *   value                                Output descriptor
+      *
+     D inflateBackEnd  PR            10I 0 extproc('inflateBackEnd')
+     D  strm                               like(z_stream)                       Expansion stream
+      *
+     D zlibCompileFlags...
+     D                 PR            10U 0 extproc('zlibCompileFlags')
+      *
+      **************************************************************************
+      *                        Checksum function prototypes
+      **************************************************************************
+      *
+     D adler32         PR            10U 0 extproc('adler32')                   New checksum
+     D  adler                        10U 0 value                                Old checksum
+     D  buf                       32767    const options(*varsize)              Bytes to accumulate
+     D  len                          10U 0 value                                Buffer length
+      *
+     D crc32           PR            10U 0 extproc('crc32')                     New checksum
+     D  crc                          10U 0 value                                Old checksum
+     D  buf                       32767    const options(*varsize)              Bytes to accumulate
+     D  len                          10U 0 value                                Buffer length
+      *
+      **************************************************************************
+      *                     Miscellaneous function prototypes
+      **************************************************************************
+      *
+     D zError          PR              *   extproc('zError')                    Error string
+     D  err                          10I 0 value                                Error code
+      *
+     D inflateSyncPoint...
+     D                 PR            10I 0 extproc('inflateSyncPoint')
+     D  strm                               like(z_stream)                       Expansion stream
+      *
+     D get_crc_table   PR              *   extproc('get_crc_table')             Ptr to ulongs
+      *
+      /endif
--- a/compress.c
+++ b/compress.c
@@ -5,6 +5,7 @@

 /* @(#) $Id$ */

+#define ZLIB_INTERNAL
 #include "zlib.h"

 /* ===========================================================================
--- a/172
+++ b/172
@@ -19,14 +19,17 @@
 # an error.

 LIBS=libz.a
-SHAREDLIB=libz.so
+LDFLAGS="-L. ${LIBS}"
 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
+VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
+VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
 AR=${AR-"ar rc"}
 RANLIB=${RANLIB-"ranlib"}
 prefix=${prefix-/usr/local}
 exec_prefix=${exec_prefix-'${prefix}'}
 libdir=${libdir-'${exec_prefix}/lib'}
 includedir=${includedir-'${prefix}/include'}
+mandir=${mandir-'${prefix}/share/man'}
 shared_ext='.so'
 shared=0
 gcc=0
@@ -50,6 +53,7 @@ case "$1" in
    -l* | --l*) libdir="$2"; shift; shift;;
    -i* | --i*) includedir="$2"; shift; shift;;
    -s* | --s*) shared=1; shift;;
+    *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;;
    esac
 done

@@ -72,10 +76,22 @@ if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
  SFLAGS=${CFLAGS-"-fPIC -O3"}
  CFLAGS="$cflags"
  case `(uname -s || echo unknown) 2>/dev/null` in
-  Linux | linux) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;
+  Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;
+  CYGWIN* | Cygwin* | cygwin* )
+             EXE='.exe';;
+  QNX*)  # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
+         # (alain.bonnefoy@icbt.com)
+                 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"};;
  HP-UX*)        LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
                 shared_ext='.sl'
                 SHAREDLIB='libz.sl';;
+  Darwin*)   shared_ext='.dylib'
+             SHAREDLIB=libz$shared_ext
+             SHAREDLIBV=libz.$VER$shared_ext
+             SHAREDLIBM=libz.$VER1$shared_ext
+             LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name /usr/lib/$SHAREDLIBV -compatibility_version $VER2 -current_version $VER"}
+             libdir='/usr/lib'
+             includedir='/usr/include';;
  *)             LDSHARED=${LDSHARED-"$cc -shared"};;
  esac
 else
@@ -83,72 +99,82 @@ else
  CC=${CC-cc}
  case `(uname -sr || echo unknown) 2>/dev/null` in
  HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
-	     CFLAGS=${CFLAGS-"-O"}
-#	     LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
-	     LDSHARED=${LDSHARED-"ld -b"}
-	     shared_ext='.sl'
-	     SHAREDLIB='libz.sl';;
+             CFLAGS=${CFLAGS-"-O"}
+#            LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
+             LDSHARED=${LDSHARED-"ld -b"}
+             shared_ext='.sl'
+             SHAREDLIB='libz.sl';;
  IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
-	     CFLAGS=${CFLAGS-"-ansi -O2"}
-	     LDSHARED=${LDSHARED-"cc -shared"};;
+             CFLAGS=${CFLAGS-"-ansi -O2"}
+             LDSHARED=${LDSHARED-"cc -shared"};;
  OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
-	     CFLAGS=${CFLAGS-"-O -std1"}
-	     LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,$SHAREDLIB -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
+             CFLAGS=${CFLAGS-"-O -std1"}
+             LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
  OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
-	     CFLAGS=${CFLAGS-"-O -std1"}
-	     LDSHARED=${LDSHARED-"cc -shared"};;
+             CFLAGS=${CFLAGS-"-O -std1"}
+             LDSHARED=${LDSHARED-"cc -shared"};;
  QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
             CFLAGS=${CFLAGS-"-4 -O"}
-	     LDSHARED=${LDSHARED-"cc"}
+             LDSHARED=${LDSHARED-"cc"}
             RANLIB=${RANLIB-"true"}
             AR="cc -A";;
  SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
-	     CFLAGS=${CFLAGS-"-O3"}
-	     LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
+             CFLAGS=${CFLAGS-"-O3"}
+             LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
  SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}
             CFLAGS=${CFLAGS-"-fast -xcg89"}
-	     LDSHARED=${LDSHARED-"cc -G"};;
+             LDSHARED=${LDSHARED-"cc -G"};;
  SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
-	     CFLAGS=${CFLAGS-"-O2"}
-	     LDSHARED=${LDSHARED-"ld"};;
+             CFLAGS=${CFLAGS-"-O2"}
+             LDSHARED=${LDSHARED-"ld"};;
  UNIX_System_V\ 4.2.0)
-	     SFLAGS=${CFLAGS-"-KPIC -O"}
-	     CFLAGS=${CFLAGS-"-O"}
-	     LDSHARED=${LDSHARED-"cc -G"};;
+             SFLAGS=${CFLAGS-"-KPIC -O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -G"};;
  UNIX_SV\ 4.2MP)
-	     SFLAGS=${CFLAGS-"-Kconform_pic -O"}
-	     CFLAGS=${CFLAGS-"-O"}
-	     LDSHARED=${LDSHARED-"cc -G"};;
+             SFLAGS=${CFLAGS-"-Kconform_pic -O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -G"};;
  OpenUNIX\ 5)
-	     SFLAGS=${CFLAGS-"-KPIC -O"}
-	     CFLAGS=${CFLAGS-"-O"}
-	     LDSHARED=${LDSHARED-"cc -G"};;
+             SFLAGS=${CFLAGS-"-KPIC -O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -G"};;
+  AIX*)  # Courtesy of dbakker@arrayasolutions.com
+             SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
+             CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
+             LDSHARED=${LDSHARED-"xlc -G"};;
  # send working options for other systems to support@gzip.org
  *)         SFLAGS=${CFLAGS-"-O"}
-	     CFLAGS=${CFLAGS-"-O"}
-	     LDSHARED=${LDSHARED-"cc -shared"};;
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -shared"};;
  esac
 fi

+SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
+SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
+SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
+
 if test $shared -eq 1; then
  echo Checking for shared library support...
  # we must test in two steps (cc then ld), required at least on SunOS 4.x
  if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
     test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
    CFLAGS="$SFLAGS"
-    LIBS="$SHAREDLIB.$VER"
-    echo Building shared library $SHAREDLIB.$VER with $CC.
+    LIBS="$SHAREDLIBV"
+    echo Building shared library $SHAREDLIBV with $CC.
  elif test -z "$old_cc" -a -z "$old_cflags"; then
-    echo No shared library suppport.
+    echo No shared library support.
    shared=0;
  else
-    echo 'No shared library suppport; try without defining CC and CFLAGS'
+    echo 'No shared library support; try without defining CC and CFLAGS'
    shared=0;
  fi
 fi
 if test $shared -eq 0; then
  LDSHARED="$CC"
  echo Building static library $LIBS version $VER with $CC.
+else
+  LDFLAGS="-L. ${SHAREDLIBV}"
 fi

 cat > $test.c <<EOF
@@ -165,11 +191,8 @@ fi

 cat > $test.c <<EOF
 #include <stdio.h>
-#include <stdlib.h>
-
-#if (defined(__MSDOS__) || defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__STDC__) || defined(__cplusplus) || defined(__OS2__)) && !defined(STDC)
-#  define STDC
-#endif
+#include <stdarg.h>
+#include "zconf.h"

 int main()
 {
@@ -182,7 +205,7 @@ int main()
 EOF

 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-  echo "Checking whether to use vsnprintf() or snprintf()... using vsnprintf()"
+  echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()"

  cat > $test.c <<EOF
 #include <stdio.h>
@@ -205,7 +228,7 @@ int main()
 }
 EOF

-  if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
+  if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
    echo "Checking for vsnprintf() in stdio.h... Yes."

    cat >$test.c <<EOF
@@ -214,14 +237,14 @@ EOF

 int mytest(char *fmt, ...)
 {
-  int i;
+  int n;
  char buf[20];
  va_list ap;

  va_start(ap, fmt);
-  i = vsnprintf(buf, sizeof(buf), fmt, ap);
+  n = vsnprintf(buf, sizeof(buf), fmt, ap);
  va_end(ap);
-  return 0;
+  return n;
 }

 int main()
@@ -252,14 +275,14 @@ EOF

 int mytest(char *fmt, ...)
 {
-  int i;
+  int n;
  char buf[20];
  va_list ap;

  va_start(ap, fmt);
-  i = vsprintf(buf, fmt, ap);
+  n = vsprintf(buf, fmt, ap);
  va_end(ap);
-  return 0;
+  return n;
 }

 int main()
@@ -279,11 +302,10 @@ EOF
    fi
  fi
 else
-  echo "Checking whether to use vsnprintf() or snprintf()... using snprintf()"
+  echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()"

  cat >$test.c <<EOF
 #include <stdio.h>
-#include <stdarg.h>

 int mytest()
 {
@@ -299,20 +321,17 @@ int main()
 }
 EOF

-  if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
+  if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
    echo "Checking for snprintf() in stdio.h... Yes."

    cat >$test.c <<EOF
 #include <stdio.h>
-#include <stdarg.h>

-int mytest(char *fmt, ...)
+int mytest()
 {
-  int i;
  char buf[20];

-  i = snprintf(buf, sizeof(buf), "%s", "foo");
-  return 0;
+  return snprintf(buf, sizeof(buf), "%s", "foo");
 }

 int main()
@@ -339,15 +358,12 @@ EOF

    cat >$test.c <<EOF
 #include <stdio.h>
-#include <stdarg.h>

-int mytest(char *fmt, ...) 
+int mytest()
 {
-  int i;
  char buf[20];

-  i = sprintf(buf, "%s", "foo");
-  return 0;
+  return sprintf(buf, "%s", "foo");
 }

 int main()
@@ -373,9 +389,9 @@ cat >$test.c <<EOF
 int main() { return 0; }
 EOF
 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-  echo "Checking for errno.h...	 Yes."
+  echo "Checking for errno.h... Yes."
 else
-  echo "Checking for errno.h...	 No."
+  echo "Checking for errno.h... No."
  CFLAGS="$CFLAGS -DNO_ERRNO_H"
 fi

@@ -405,21 +421,25 @@ case $CFLAGS in
    fi;;
 esac

-rm -f $test.[co] $test$shared_ext
+rm -f $test.[co] $test $test$shared_ext

 # udpate Makefile
 sed < Makefile.in "
-/^CC *=/s%=.*%=$CC%
-/^CFLAGS *=/s%=.*%=$CFLAGS%
-/^CPP *=/s%=.*%=$CPP%
-/^LDSHARED *=/s%=.*%=$LDSHARED%
-/^LIBS *=/s%=.*%=$LIBS%
-/^SHAREDLIB *=/s%=.*%=$SHAREDLIB%
-/^AR *=/s%=.*%=$AR%
-/^RANLIB *=/s%=.*%=$RANLIB%
-/^VER *=/s%=.*%=$VER%
-/^prefix *=/s%=.*%=$prefix%
-/^exec_prefix *=/s%=.*%=$exec_prefix%
-/^libdir *=/s%=.*%=$libdir%
-/^includedir *=/s%=.*%=$includedir%
+/^CC *=/s#=.*#=$CC#
+/^CFLAGS *=/s#=.*#=$CFLAGS#
+/^CPP *=/s#=.*#=$CPP#
+/^LDSHARED *=/s#=.*#=$LDSHARED#
+/^LIBS *=/s#=.*#=$LIBS#
+/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
+/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
+/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
+/^AR *=/s#=.*#=$AR#
+/^RANLIB *=/s#=.*#=$RANLIB#
+/^EXE *=/s#=.*#=$EXE#
+/^prefix *=/s#=.*#=$prefix#
+/^exec_prefix *=/s#=.*#=$exec_prefix#
+/^libdir *=/s#=.*#=$libdir#
+/^includedir *=/s#=.*#=$includedir#
+/^mandir *=/s#=.*#=$mandir#
+/^LDFLAGS *=/s#=.*#=$LDFLAGS#
 " > Makefile
--- a/contrib/README.contrib
+++ b/contrib/README.contrib
@@ -4,44 +4,67 @@ Use at your own risk. Please contact the authors of the contributions
 for help about these, not the zlib authors. Thanks.


-asm386/     by Gilles Vollant <info@winimage.com>
-	386 asm code replacing longest_match(), for Visual C++ 4.2 and ML 6.11c
+ada/        by Dmitriy Anisimkov <anisimkov@yahoo.com>
+        Support for Ada
+        See http://zlib-ada.sourceforge.net/

-asm586/ and asm686/    by Brian Raiter <breadbox@muppetlabs.com> 
-        asm code for Pentium and Pentium Pro
+asm586/
+asm686/     by Brian Raiter <breadbox@muppetlabs.com>
+        asm code for Pentium and PPro/PII, using the AT&T (GNU as) syntax
        See http://www.muppetlabs.com/~breadbox/software/assembly.html

 blast/      by Mark Adler <madler@alumni.caltech.edu>
-	Decompressor for output of PKWare Data Compression Library (DCL)
+        Decompressor for output of PKWare Data Compression Library (DCL)

-delphi/     by Bob Dellaca <bobdl@xtra.co.nz>
-	Support for Delphi
+delphi/     by Cosmin Truta <cosmint@cs.ubbcluj.ro>
+        Support for Delphi and C++ Builder

-delphi2/    by Davide Moretti <dave@rimini.com>
-        Another support for C++Builder and Delphi
+gzappend/   by Mark Adler <madler@alumni.caltech.edu>
+        append to a gzip file -- illustrates the use of Z_BLOCK
+
+infback9/   by Mark Adler <madler@alumni.caltech.edu>
+        Unsupported diffs to infback to decode the deflate64 format

 inflate86/  by Chris Anderson <christop@charm.net>
-	Tuned x86 gcc asm code to replace inflate_fast()
-
-minizip/    by Gilles Vollant <info@winimage.com>
-	Mini zip and unzip based on zlib
-        See http://www.winimage.com/zLibDll/unzip.html
+        Tuned x86 gcc asm code to replace inflate_fast()

 iostream/   by Kevin Ruland <kevin@rodin.wustl.edu>
        A C++ I/O streams interface to the zlib gz* functions

 iostream2/  by Tyge L<>vset <Tyge.Lovset@cmr.no>
-	Another C++ I/O streams interface
+        Another C++ I/O streams interface

-testzlib/    by Gilles Vollant <info@winimage.com>
-	Example of the use of zlib
+iostream3/  by Ludwig Schwardt <schwardt@sun.ac.za>
+            and Kevin Ruland <kevin@rodin.wustl.edu>
+        Yet another C++ I/O streams interface
+
+masm686/    by Dan Higdon <hdan@kinesoft.com>
+            and Chuck Walbourn <chuckw@kinesoft.com>
+        asm code for Pentium Pro/PII, using the MASM syntax
+
+masmx86/    by Gilles Vollant <info@winimage.com>
+        x86 asm code to replace longest_match() and inflate_fast(),
+        for Visual C++ and MASM
+
+minizip/    by Gilles Vollant <info@winimage.com>
+        Mini zip and unzip based on zlib
+        See http://www.winimage.com/zLibDll/unzip.html
+
+pascal/     by Bob Dellaca <bobdl@xtra.co.nz> et al.
+        Support for Pascal
+
+puff/       by Mark Adler <madler@alumni.caltech.edu>
+        Small, low memory usage inflate.  Also serves to provide an
+        unambiguous description of the deflate format.
+
+testzlib/   by Gilles Vollant <info@winimage.com>
+        Example of the use of zlib

 untgz/      by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
-	A very simple tar.gz file extractor using zlib
+        A very simple tar.gz file extractor using zlib

 visual-basic.txt by Carlos Rios <c_rios@sonda.cl>
-        How to use compress(), uncompress() and the gz* functions from VB.
+        How to use compress(), uncompress() and the gz* functions from VB

 vstudio/    by Gilles Vollant <info@winimage.com>
-	Building zlib DLL with Visual Studio .NET
-	Includes x86 inffast.asm for MASM
+        Building zlib with Visual Studio .NET
--- a/contrib/ada/mtest.adb
+++ b/contrib/ada/mtest.adb
@@ -0,0 +1,153 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+--  Continuous test for ZLib multithreading. If the test is fail
+--  Wou should provide thread safe allocation routines for the Z_Stream.
+--
+--  $Id: mtest.adb,v 1.2 2003/08/12 12:11:05 vagul Exp $
+
+with ZLib;
+with Ada.Streams;
+with Ada.Numerics.Discrete_Random;
+with Ada.Text_IO;
+with Ada.Exceptions;
+with Ada.Task_Identification;
+
+procedure MTest is
+   use Ada.Streams;
+   use ZLib;
+
+   Stop : Boolean := False;
+
+   pragma Atomic (Stop);
+
+   subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
+
+   package Random_Elements is
+      new Ada.Numerics.Discrete_Random (Visible_Symbols);
+
+   task type Test_Task;
+
+   task body Test_Task is
+      Buffer : Stream_Element_Array (1 .. 100_000);
+      Gen : Random_Elements.Generator;
+
+      Buffer_First  : Stream_Element_Offset;
+      Compare_First : Stream_Element_Offset;
+
+      Deflate : Filter_Type;
+      Inflate : Filter_Type;
+
+      procedure Further (Item : in Stream_Element_Array);
+
+      procedure Read_Buffer
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset);
+
+      -------------
+      -- Further --
+      -------------
+
+      procedure Further (Item : in Stream_Element_Array) is
+
+         procedure Compare (Item : in Stream_Element_Array);
+
+         -------------
+         -- Compare --
+         -------------
+
+         procedure Compare (Item : in Stream_Element_Array) is
+            Next_First : Stream_Element_Offset := Compare_First + Item'Length;
+         begin
+            if Buffer (Compare_First .. Next_First - 1) /= Item then
+               raise Program_Error;
+            end if;
+
+            Compare_First := Next_First;
+         end Compare;
+
+         procedure Compare_Write is new ZLib.Write (Write => Compare);
+      begin
+         Compare_Write (Inflate, Item, No_Flush);
+      end Further;
+
+      -----------------
+      -- Read_Buffer --
+      -----------------
+
+      procedure Read_Buffer
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset)
+      is
+         Buff_Diff   : Stream_Element_Offset := Buffer'Last - Buffer_First;
+         Next_First : Stream_Element_Offset;
+      begin
+         if Item'Length <= Buff_Diff then
+            Last := Item'Last;
+
+            Next_First := Buffer_First + Item'Length;
+
+            Item := Buffer (Buffer_First .. Next_First - 1);
+
+            Buffer_First := Next_First;
+         else
+            Last := Item'First + Buff_Diff;
+            Item (Item'First .. Last) := Buffer (Buffer_First .. Buffer'Last);
+            Buffer_First := Buffer'Last + 1;
+         end if;
+      end Read_Buffer;
+
+      procedure Translate is new Generic_Translate
+                                   (Data_In  => Read_Buffer,
+                                    Data_Out => Further);
+
+   begin
+      Random_Elements.Reset (Gen);
+
+      Buffer := (others => 20);
+
+      Main : loop
+         for J in Buffer'Range loop
+            Buffer (J) := Random_Elements.Random (Gen);
+
+            Deflate_Init (Deflate);
+            Inflate_Init (Inflate);
+
+            Buffer_First  := Buffer'First;
+            Compare_First := Buffer'First;
+
+            Translate (Deflate);
+
+            if Compare_First /= Buffer'Last + 1 then
+               raise Program_Error;
+            end if;
+
+            Ada.Text_IO.Put_Line
+              (Ada.Task_Identification.Image
+                 (Ada.Task_Identification.Current_Task)
+               & Stream_Element_Offset'Image (J)
+               & ZLib.Count'Image (Total_Out (Deflate)));
+
+            Close (Deflate);
+            Close (Inflate);
+
+            exit Main when Stop;
+         end loop;
+      end loop Main;
+   exception
+      when E : others =>
+         Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (E));
+         Stop := True;
+   end Test_Task;
+
+   Test : array (1 .. 4) of Test_Task;
+
+   pragma Unreferenced (Test);
+
+begin
+   null;
+end MTest;
--- a/contrib/ada/read.adb
+++ b/contrib/ada/read.adb
@@ -0,0 +1,151 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: read.adb,v 1.7 2003/08/12 12:12:35 vagul Exp $
+
+--  Test/demo program for the generic read interface.
+
+with Ada.Numerics.Discrete_Random;
+with Ada.Streams;
+with Ada.Text_IO;
+
+with ZLib;
+
+procedure Read is
+
+   use Ada.Streams;
+
+   ------------------------------------
+   --  Test configuration parameters --
+   ------------------------------------
+
+   File_Size   : Stream_Element_Offset := 100_000;
+
+   Continuous  : constant Boolean          := False;
+   --  If this constant is True, the test would be repeated again and again,
+   --  with increment File_Size for every iteration.
+
+   Header      : constant ZLib.Header_Type := ZLib.Default;
+   --  Do not use Header other than Default in ZLib versions 1.1.4 and older.
+
+   Init_Random : constant := 8;
+   --  We are using the same random sequence, in case of we catch bug,
+   --  so we would be able to reproduce it.
+
+   -- End --
+
+   Pack_Size : Stream_Element_Offset;
+   Offset    : Stream_Element_Offset;
+
+   Filter     : ZLib.Filter_Type;
+
+   subtype Visible_Symbols
+      is Stream_Element range 16#20# .. 16#7E#;
+
+   package Random_Elements is new
+      Ada.Numerics.Discrete_Random (Visible_Symbols);
+
+   Gen : Random_Elements.Generator;
+   Period  : constant Stream_Element_Offset := 200;
+   --  Period constant variable for random generator not to be very random.
+   --  Bigger period, harder random.
+
+   Read_Buffer : Stream_Element_Array (1 .. 2048);
+   Read_First  : Stream_Element_Offset;
+   Read_Last   : Stream_Element_Offset;
+
+   procedure Reset;
+
+   procedure Read
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset);
+   --  this procedure is for generic instantiation of
+   --  ZLib.Read
+   --  reading data from the File_In.
+
+   procedure Read is new ZLib.Read (Read, Read_Buffer, Read_First, Read_Last);
+
+   ----------
+   -- Read --
+   ----------
+
+   procedure Read
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset) is
+   begin
+      Last := Stream_Element_Offset'Min
+               (Item'Last,
+                Item'First + File_Size - Offset);
+
+      for J in Item'First .. Last loop
+         if J < Item'First + Period then
+            Item (J) := Random_Elements.Random (Gen);
+         else
+            Item (J) := Item (J - Period);
+         end if;
+
+         Offset   := Offset + 1;
+      end loop;
+   end Read;
+
+   -----------
+   -- Reset --
+   -----------
+
+   procedure Reset is
+   begin
+      Random_Elements.Reset (Gen, Init_Random);
+      Pack_Size := 0;
+      Offset := 1;
+      Read_First := Read_Buffer'Last + 1;
+   end Reset;
+
+begin
+   Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
+
+   loop
+      for Level in ZLib.Compression_Level'Range loop
+
+         Ada.Text_IO.Put ("Level ="
+            & ZLib.Compression_Level'Image (Level));
+
+         --  Deflate using generic instantiation.
+
+         ZLib.Deflate_Init
+               (Filter,
+                Level,
+                Header => Header);
+
+         Reset;
+
+         Ada.Text_IO.Put
+           (Stream_Element_Offset'Image (File_Size) & " ->");
+
+         loop
+            declare
+               Buffer : Stream_Element_Array (1 .. 1024);
+               Last   : Stream_Element_Offset;
+            begin
+               Read (Filter, Buffer, Last);
+
+               Pack_Size := Pack_Size + Last - Buffer'First + 1;
+
+               exit when Last < Buffer'Last;
+            end;
+         end loop;
+
+         Ada.Text_IO.Put_Line (Stream_Element_Offset'Image (Pack_Size));
+
+         ZLib.Close (Filter);
+      end loop;
+
+      exit when not Continuous;
+
+      File_Size := File_Size + 1;
+   end loop;
+end Read;
--- a/contrib/ada/readme.txt
+++ b/contrib/ada/readme.txt
@@ -0,0 +1,52 @@
+
+			ZLib for Ada thick binding (ZLib.Ada)
+			Release 1.2
+
+ZLib.Ada is a thick binding interface to the popular ZLib data
+compression library, available at http://www.gzip.org/zlib/.
+It provides Ada-style access to the ZLib C library.
+
+
+	Here are the main changes since ZLib.Ada 1.1:
+
+- The default header type has a name "Default" now. Auto is used only for
+  automatic GZip/ZLib header detection.
+
+- Added test for multitasking mtest.adb.
+
+- Added GNAT project file zlib.gpr.
+
+
+	How to build ZLib.Ada under GNAT
+
+You should have the ZLib library already build on your computer, before
+building ZLib.Ada. Make the directory of ZLib.Ada sources current and
+issue the command:
+
+  gnatmake test -largs -L<directory where libz.a is> -lz
+
+Or use the GNAT project file build for GNAT 3.15 or later:
+
+  gnatmake -Pzlib.gpr -L<directory where libz.a is>
+
+
+	How to build ZLib.Ada under Aonix ObjectAda for Win32 7.2.2
+
+1. Make a project with all *.ads and *.adb files from the distribution.
+2. Build the libz.a library from the ZLib C sources.
+3. Rename libz.a to z.lib.
+4. Add the library z.lib to the project.
+5. Add the libc.lib library from the ObjectAda distribution to the project.
+6. Build the executable using test.adb as a main procedure.
+
+
+	How to use ZLib.Ada
+
+The source files test.adb and read.adb are small demo programs that show
+the main functionality of ZLib.Ada.
+
+The routines from the package specifications are commented.
+
+
+Homepage: http://zlib-ada.sourceforge.net/
+Author: Dmitriy Anisimkov <anisimkov@yahoo.com>
--- a/contrib/ada/test.adb
+++ b/contrib/ada/test.adb
@@ -0,0 +1,463 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: test.adb,v 1.17 2003/08/12 12:13:30 vagul Exp $
+
+--  The program has a few aims.
+--  1. Test ZLib.Ada95 thick binding functionality.
+--  2. Show the example of use main functionality of the ZLib.Ada95 binding.
+--  3. Build this program automatically compile all ZLib.Ada95 packages under
+--     GNAT Ada95 compiler.
+
+with ZLib.Streams;
+with Ada.Streams.Stream_IO;
+with Ada.Numerics.Discrete_Random;
+
+with Ada.Text_IO;
+
+with Ada.Calendar;
+
+procedure Test is
+
+   use Ada.Streams;
+   use Stream_IO;
+
+   ------------------------------------
+   --  Test configuration parameters --
+   ------------------------------------
+
+   File_Size   : Count   := 100_000;
+   Continuous  : constant Boolean := False;
+
+   Header      : constant ZLib.Header_Type := ZLib.Default;
+                                              --  ZLib.None;
+                                              --  ZLib.Auto;
+                                              --  ZLib.GZip;
+   --  Do not use Header other then Default in ZLib versions 1.1.4
+   --  and older.
+
+   Strategy    : constant ZLib.Strategy_Type := ZLib.Default_Strategy;
+   Init_Random : constant := 10;
+
+   -- End --
+
+   In_File_Name  : constant String := "testzlib.in";
+   --  Name of the input file
+
+   Z_File_Name   : constant String := "testzlib.zlb";
+   --  Name of the compressed file.
+
+   Out_File_Name : constant String := "testzlib.out";
+   --  Name of the decompressed file.
+
+   File_In   : File_Type;
+   File_Out  : File_Type;
+   File_Back : File_Type;
+   File_Z    : ZLib.Streams.Stream_Type;
+
+   Filter : ZLib.Filter_Type;
+
+   Time_Stamp : Ada.Calendar.Time;
+
+   procedure Generate_File;
+   --  Generate file of spetsified size with some random data.
+   --  The random data is repeatable, for the good compression.
+
+   procedure Compare_Streams
+     (Left, Right : in out Root_Stream_Type'Class);
+   --  The procedure compearing data in 2 streams.
+   --  It is for compare data before and after compression/decompression.
+
+   procedure Compare_Files (Left, Right : String);
+   --  Compare files. Based on the Compare_Streams.
+
+   procedure Copy_Streams
+     (Source, Target : in out Root_Stream_Type'Class;
+      Buffer_Size    : in     Stream_Element_Offset := 1024);
+   --  Copying data from one stream to another. It is for test stream
+   --  interface of the library.
+
+   procedure Data_In
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset);
+   --  this procedure is for generic instantiation of
+   --  ZLib.Generic_Translate.
+   --  reading data from the File_In.
+
+   procedure Data_Out (Item : in Stream_Element_Array);
+   --  this procedure is for generic instantiation of
+   --  ZLib.Generic_Translate.
+   --  writing data to the File_Out.
+
+   procedure Stamp;
+   --  Store the timestamp to the local variable.
+
+   procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count);
+   --  Print the time statistic with the message.
+
+   procedure Translate is new ZLib.Generic_Translate
+                                (Data_In  => Data_In,
+                                 Data_Out => Data_Out);
+   --  This procedure is moving data from File_In to File_Out
+   --  with compression or decompression, depend on initialization of
+   --  Filter parameter.
+
+   -------------------
+   -- Compare_Files --
+   -------------------
+
+   procedure Compare_Files (Left, Right : String) is
+      Left_File, Right_File : File_Type;
+   begin
+      Open (Left_File, In_File, Left);
+      Open (Right_File, In_File, Right);
+      Compare_Streams (Stream (Left_File).all, Stream (Right_File).all);
+      Close (Left_File);
+      Close (Right_File);
+   end Compare_Files;
+
+   ---------------------
+   -- Compare_Streams --
+   ---------------------
+
+   procedure Compare_Streams
+     (Left, Right : in out Ada.Streams.Root_Stream_Type'Class)
+   is
+      Left_Buffer, Right_Buffer : Stream_Element_Array (0 .. 16#FFF#);
+      Left_Last, Right_Last : Stream_Element_Offset;
+   begin
+      loop
+         Read (Left, Left_Buffer, Left_Last);
+         Read (Right, Right_Buffer, Right_Last);
+
+         if Left_Last /= Right_Last then
+            Ada.Text_IO.Put_Line ("Compare error :"
+              & Stream_Element_Offset'Image (Left_Last)
+              & " /= "
+              & Stream_Element_Offset'Image (Right_Last));
+
+            raise Constraint_Error;
+
+         elsif Left_Buffer (0 .. Left_Last)
+               /= Right_Buffer (0 .. Right_Last)
+         then
+            Ada.Text_IO.Put_Line ("ERROR: IN and OUT files is not equal.");
+            raise Constraint_Error;
+
+         end if;
+
+         exit when Left_Last < Left_Buffer'Last;
+      end loop;
+   end Compare_Streams;
+
+   ------------------
+   -- Copy_Streams --
+   ------------------
+
+   procedure Copy_Streams
+     (Source, Target : in out Ada.Streams.Root_Stream_Type'Class;
+      Buffer_Size    : in     Stream_Element_Offset := 1024)
+   is
+      Buffer : Stream_Element_Array (1 .. Buffer_Size);
+      Last   : Stream_Element_Offset;
+   begin
+      loop
+         Read  (Source, Buffer, Last);
+         Write (Target, Buffer (1 .. Last));
+
+         exit when Last < Buffer'Last;
+      end loop;
+   end Copy_Streams;
+
+   -------------
+   -- Data_In --
+   -------------
+
+   procedure Data_In
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset) is
+   begin
+      Read (File_In, Item, Last);
+   end Data_In;
+
+   --------------
+   -- Data_Out --
+   --------------
+
+   procedure Data_Out (Item : in Stream_Element_Array) is
+   begin
+      Write (File_Out, Item);
+   end Data_Out;
+
+   -------------------
+   -- Generate_File --
+   -------------------
+
+   procedure Generate_File is
+      subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
+
+      package Random_Elements is
+         new Ada.Numerics.Discrete_Random (Visible_Symbols);
+
+      Gen    : Random_Elements.Generator;
+      Buffer : Stream_Element_Array := (1 .. 77 => 16#20#) & 10;
+
+      Buffer_Count : constant Count := File_Size / Buffer'Length;
+      --  Number of same buffers in the packet.
+
+      Density : constant Count := 30; --  from 0 to Buffer'Length - 2;
+
+      procedure Fill_Buffer (J, D : in Count);
+      --  Change the part of the buffer.
+
+      -----------------
+      -- Fill_Buffer --
+      -----------------
+
+      procedure Fill_Buffer (J, D : in Count) is
+      begin
+         for K in 0 .. D loop
+            Buffer
+              (Stream_Element_Offset ((J + K) mod (Buffer'Length - 1) + 1))
+             := Random_Elements.Random (Gen);
+
+         end loop;
+      end Fill_Buffer;
+
+   begin
+      Random_Elements.Reset (Gen, Init_Random);
+
+      Create (File_In, Out_File, In_File_Name);
+
+      Fill_Buffer (1, Buffer'Length - 2);
+
+      for J in 1 .. Buffer_Count loop
+         Write (File_In, Buffer);
+
+         Fill_Buffer (J, Density);
+      end loop;
+
+      --  fill remain size.
+
+      Write
+        (File_In,
+         Buffer
+           (1 .. Stream_Element_Offset
+                   (File_Size - Buffer'Length * Buffer_Count)));
+
+      Flush (File_In);
+      Close (File_In);
+   end Generate_File;
+
+   ---------------------
+   -- Print_Statistic --
+   ---------------------
+
+   procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count) is
+      use Ada.Calendar;
+      use Ada.Text_IO;
+
+      package Count_IO is new Integer_IO (ZLib.Count);
+
+      Curr_Dur : Duration := Clock - Time_Stamp;
+   begin
+      Put (Msg);
+
+      Set_Col (20);
+      Ada.Text_IO.Put ("size =");
+
+      Count_IO.Put
+        (Data_Size,
+         Width => Stream_IO.Count'Image (File_Size)'Length);
+
+      Put_Line (" duration =" & Duration'Image (Curr_Dur));
+   end Print_Statistic;
+
+   -----------
+   -- Stamp --
+   -----------
+
+   procedure Stamp is
+   begin
+      Time_Stamp := Ada.Calendar.Clock;
+   end Stamp;
+
+begin
+   Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
+
+   loop
+      Generate_File;
+
+      for Level in ZLib.Compression_Level'Range loop
+
+         Ada.Text_IO.Put_Line ("Level ="
+            & ZLib.Compression_Level'Image (Level));
+
+         --  Test generic interface.
+         Open   (File_In, In_File, In_File_Name);
+         Create (File_Out, Out_File, Z_File_Name);
+
+         Stamp;
+
+         --  Deflate using generic instantiation.
+
+         ZLib.Deflate_Init
+               (Filter   => Filter,
+                Level    => Level,
+                Strategy => Strategy,
+                Header   => Header);
+
+         Translate (Filter);
+         Print_Statistic ("Generic compress", ZLib.Total_Out (Filter));
+         ZLib.Close (Filter);
+
+         Close (File_In);
+         Close (File_Out);
+
+         Open   (File_In, In_File, Z_File_Name);
+         Create (File_Out, Out_File, Out_File_Name);
+
+         Stamp;
+
+         --  Inflate using generic instantiation.
+
+         ZLib.Inflate_Init (Filter, Header => Header);
+
+         Translate (Filter);
+         Print_Statistic ("Generic decompress", ZLib.Total_Out (Filter));
+
+         ZLib.Close (Filter);
+
+         Close (File_In);
+         Close (File_Out);
+
+         Compare_Files (In_File_Name, Out_File_Name);
+
+         --  Test stream interface.
+
+         --  Compress to the back stream.
+
+         Open   (File_In, In_File, In_File_Name);
+         Create (File_Back, Out_File, Z_File_Name);
+
+         Stamp;
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.Out_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => True,
+            Level           => Level,
+            Strategy        => Strategy,
+            Header          => Header);
+
+         Copy_Streams
+           (Source => Stream (File_In).all,
+            Target => File_Z);
+
+         --  Flushing internal buffers to the back stream.
+
+         ZLib.Streams.Flush (File_Z, ZLib.Finish);
+
+         Print_Statistic ("Write compress",
+                          ZLib.Streams.Write_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+
+         Close (File_In);
+         Close (File_Back);
+
+         --  Compare reading from original file and from
+         --  decompression stream.
+
+         Open (File_In,   In_File, In_File_Name);
+         Open (File_Back, In_File, Z_File_Name);
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.In_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => True,
+            Header          => Header);
+
+         Stamp;
+         Compare_Streams (Stream (File_In).all, File_Z);
+
+         Print_Statistic ("Read decompress",
+                          ZLib.Streams.Read_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+         Close (File_In);
+         Close (File_Back);
+
+         --  Compress by reading from compression stream.
+
+         Open (File_Back, In_File, In_File_Name);
+         Create (File_Out, Out_File, Z_File_Name);
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.In_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => False,
+            Level           => Level,
+            Strategy        => Strategy,
+            Header          => Header);
+
+         Stamp;
+         Copy_Streams
+           (Source => File_Z,
+            Target => Stream (File_Out).all);
+
+         Print_Statistic ("Read compress",
+                          ZLib.Streams.Read_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+
+         Close (File_Out);
+         Close (File_Back);
+
+         --  Decompress to decompression stream.
+
+         Open   (File_In,   In_File, Z_File_Name);
+         Create (File_Back, Out_File, Out_File_Name);
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.Out_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => False,
+            Header          => Header);
+
+         Stamp;
+
+         Copy_Streams
+           (Source => Stream (File_In).all,
+            Target => File_Z);
+
+         Print_Statistic ("Write decompress",
+                          ZLib.Streams.Write_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+         Close (File_In);
+         Close (File_Back);
+
+         Compare_Files (In_File_Name, Out_File_Name);
+      end loop;
+
+      Ada.Text_IO.Put_Line (Count'Image (File_Size) & " Ok.");
+
+      exit when not Continuous;
+
+      File_Size := File_Size + 1;
+   end loop;
+end Test;
--- a/contrib/ada/zlib-streams.adb
+++ b/contrib/ada/zlib-streams.adb
@@ -0,0 +1,215 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-streams.adb,v 1.9 2003/08/12 13:15:31 vagul Exp $
+
+with Ada.Unchecked_Deallocation;
+
+package body ZLib.Streams is
+
+   -----------
+   -- Close --
+   -----------
+
+   procedure Close (Stream : in out Stream_Type) is
+      procedure Free is new Ada.Unchecked_Deallocation
+         (Stream_Element_Array, Buffer_Access);
+   begin
+      if Stream.Mode = Out_Stream or Stream.Mode = Duplex then
+         --  We should flush the data written by the writer.
+
+         Flush (Stream, Finish);
+
+         Close (Stream.Writer);
+      end if;
+
+      if Stream.Mode = In_Stream or Stream.Mode = Duplex then
+         Close (Stream.Reader);
+         Free (Stream.Buffer);
+      end if;
+   end Close;
+
+   ------------
+   -- Create --
+   ------------
+
+   procedure Create
+     (Stream            :    out Stream_Type;
+      Mode              : in     Stream_Mode;
+      Back              : in     Stream_Access;
+      Back_Compressed   : in     Boolean;
+      Level             : in     Compression_Level := Default_Compression;
+      Strategy          : in     Strategy_Type     := Default_Strategy;
+      Header            : in     Header_Type       := Default;
+      Read_Buffer_Size  : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size;
+      Write_Buffer_Size : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size)
+   is
+
+      subtype Buffer_Subtype is Stream_Element_Array (1 .. Read_Buffer_Size);
+
+      procedure Init_Filter
+         (Filter   : in out Filter_Type;
+          Compress : in     Boolean);
+
+      -----------------
+      -- Init_Filter --
+      -----------------
+
+      procedure Init_Filter
+         (Filter   : in out Filter_Type;
+          Compress : in     Boolean) is
+      begin
+         if Compress then
+            Deflate_Init
+              (Filter, Level, Strategy, Header => Header);
+         else
+            Inflate_Init (Filter, Header => Header);
+         end if;
+      end Init_Filter;
+
+   begin
+      Stream.Back := Back;
+      Stream.Mode := Mode;
+
+      if Mode = Out_Stream or Mode = Duplex then
+         Init_Filter (Stream.Writer, Back_Compressed);
+         Stream.Buffer_Size := Write_Buffer_Size;
+      else
+         Stream.Buffer_Size := 0;
+      end if;
+
+      if Mode = In_Stream or Mode = Duplex then
+         Init_Filter (Stream.Reader, not Back_Compressed);
+
+         Stream.Buffer     := new Buffer_Subtype;
+         Stream.Rest_First := Stream.Buffer'Last + 1;
+      end if;
+   end Create;
+
+   -----------
+   -- Flush --
+   -----------
+
+   procedure Flush
+     (Stream : in out Stream_Type;
+      Mode   : in     Flush_Mode := Sync_Flush)
+   is
+      Buffer : Stream_Element_Array (1 .. Stream.Buffer_Size);
+      Last   : Stream_Element_Offset;
+   begin
+      loop
+         Flush (Stream.Writer, Buffer, Last, Mode);
+
+         Ada.Streams.Write (Stream.Back.all, Buffer (1 .. Last));
+
+         exit when Last < Buffer'Last;
+      end loop;
+   end Flush;
+
+   ----------
+   -- Read --
+   ----------
+
+   procedure Read
+     (Stream : in out Stream_Type;
+      Item   :    out Stream_Element_Array;
+      Last   :    out Stream_Element_Offset)
+   is
+
+      procedure Read
+        (Item : out Stream_Element_Array;
+         Last : out Stream_Element_Offset);
+
+      ----------
+      -- Read --
+      ----------
+
+      procedure Read
+        (Item : out Stream_Element_Array;
+         Last : out Stream_Element_Offset) is
+      begin
+         Ada.Streams.Read (Stream.Back.all, Item, Last);
+      end Read;
+
+      procedure Read is new ZLib.Read
+         (Read       => Read,
+          Buffer     => Stream.Buffer.all,
+          Rest_First => Stream.Rest_First,
+          Rest_Last  => Stream.Rest_Last);
+
+   begin
+      Read (Stream.Reader, Item, Last);
+   end Read;
+
+   -------------------
+   -- Read_Total_In --
+   -------------------
+
+   function Read_Total_In (Stream : in Stream_Type) return Count is
+   begin
+      return Total_In (Stream.Reader);
+   end Read_Total_In;
+
+   --------------------
+   -- Read_Total_Out --
+   --------------------
+
+   function Read_Total_Out (Stream : in Stream_Type) return Count is
+   begin
+      return Total_Out (Stream.Reader);
+   end Read_Total_Out;
+
+   -----------
+   -- Write --
+   -----------
+
+   procedure Write
+     (Stream : in out Stream_Type;
+      Item   : in     Stream_Element_Array)
+   is
+
+      procedure Write (Item : in Stream_Element_Array);
+
+      -----------
+      -- Write --
+      -----------
+
+      procedure Write (Item : in Stream_Element_Array) is
+      begin
+         Ada.Streams.Write (Stream.Back.all, Item);
+      end Write;
+
+      procedure Write is new ZLib.Write
+         (Write       => Write,
+          Buffer_Size => Stream.Buffer_Size);
+
+   begin
+      Write (Stream.Writer, Item, No_Flush);
+   end Write;
+
+   --------------------
+   -- Write_Total_In --
+   --------------------
+
+   function Write_Total_In (Stream : in Stream_Type) return Count is
+   begin
+      return Total_In (Stream.Writer);
+   end Write_Total_In;
+
+   ---------------------
+   -- Write_Total_Out --
+   ---------------------
+
+   function Write_Total_Out (Stream : in Stream_Type) return Count is
+   begin
+      return Total_Out (Stream.Writer);
+   end Write_Total_Out;
+
+end ZLib.Streams;
--- a/contrib/ada/zlib-streams.ads
+++ b/contrib/ada/zlib-streams.ads
@@ -0,0 +1,112 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-streams.ads,v 1.11 2003/08/12 13:15:31 vagul Exp $
+
+package ZLib.Streams is
+
+   type Stream_Mode is (In_Stream, Out_Stream, Duplex);
+
+   type Stream_Access is access all Ada.Streams.Root_Stream_Type'Class;
+
+   type Stream_Type is
+      new Ada.Streams.Root_Stream_Type with private;
+
+   procedure Read
+     (Stream : in out Stream_Type;
+      Item   :    out Ada.Streams.Stream_Element_Array;
+      Last   :    out Ada.Streams.Stream_Element_Offset);
+
+   procedure Write
+     (Stream : in out Stream_Type;
+      Item   : in     Ada.Streams.Stream_Element_Array);
+
+   procedure Flush
+     (Stream : in out Stream_Type;
+      Mode   : in     Flush_Mode := Sync_Flush);
+   --  Flush the written data to the back stream,
+   --  all data placed to the compressor is flushing to the Back stream.
+   --  Should not be used untill necessary, becouse it is decreasing
+   --  compression.
+
+   function Read_Total_In (Stream : in Stream_Type) return Count;
+   pragma Inline (Read_Total_In);
+   --  Return total number of bytes read from back stream so far.
+
+   function Read_Total_Out (Stream : in Stream_Type) return Count;
+   pragma Inline (Read_Total_Out);
+   --  Return total number of bytes read so far.
+
+   function Write_Total_In (Stream : in Stream_Type) return Count;
+   pragma Inline (Write_Total_In);
+   --  Return total number of bytes written so far.
+
+   function Write_Total_Out (Stream : in Stream_Type) return Count;
+   pragma Inline (Write_Total_Out);
+   --  Return total number of bytes written to the back stream.
+
+   procedure Create
+     (Stream            :    out Stream_Type;
+      Mode              : in     Stream_Mode;
+      Back              : in     Stream_Access;
+      Back_Compressed   : in     Boolean;
+      Level             : in     Compression_Level := Default_Compression;
+      Strategy          : in     Strategy_Type     := Default_Strategy;
+      Header            : in     Header_Type       := Default;
+      Read_Buffer_Size  : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size;
+      Write_Buffer_Size : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size);
+   --  Create the Comression/Decompression stream.
+   --  If mode is In_Stream then Write operation is disabled.
+   --  If mode is Out_Stream then Read operation is disabled.
+
+   --  If Back_Compressed is true then
+   --  Data written to the Stream is compressing to the Back stream
+   --  and data read from the Stream is decompressed data from the Back stream.
+
+   --  If Back_Compressed is false then
+   --  Data written to the Stream is decompressing to the Back stream
+   --  and data read from the Stream is compressed data from the Back stream.
+
+   --  !!! When the Need_Header is False ZLib-Ada is using undocumented
+   --  ZLib 1.1.4 functionality to do not create/wait for ZLib headers.
+
+   procedure Close (Stream : in out Stream_Type);
+
+private
+
+   use Ada.Streams;
+
+   type Buffer_Access is access all Stream_Element_Array;
+
+   type Stream_Type
+     is new Root_Stream_Type with
+   record
+      Mode       : Stream_Mode;
+
+      Buffer     : Buffer_Access;
+      Rest_First : Stream_Element_Offset;
+      Rest_Last  : Stream_Element_Offset;
+      --  Buffer for Read operation.
+      --  We need to have this buffer in the record
+      --  becouse not all read data from back stream
+      --  could be processed during the read operation.
+
+      Buffer_Size : Stream_Element_Offset;
+      --  Buffer size for write operation.
+      --  We do not need to have this buffer
+      --  in the record becouse all data could be
+      --  processed in the write operation.
+
+      Back       : Stream_Access;
+      Reader     : Filter_Type;
+      Writer     : Filter_Type;
+   end record;
+
+end ZLib.Streams;
--- a/contrib/ada/zlib-thin.adb
+++ b/contrib/ada/zlib-thin.adb
@@ -0,0 +1,185 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-thin.adb,v 1.6 2003/01/21 15:26:37 vagul Exp $
+
+package body ZLib.Thin is
+
+   ZLIB_VERSION : constant Chars_Ptr :=
+      Interfaces.C.Strings.New_String ("1.1.4");
+
+   Z_Stream_Size : constant Int := Z_Stream'Size / System.Storage_Unit;
+
+   --------------
+   -- Avail_In --
+   --------------
+
+   function Avail_In (Strm : in Z_Stream) return UInt is
+   begin
+      return Strm.Avail_In;
+   end Avail_In;
+
+   ---------------
+   -- Avail_Out --
+   ---------------
+
+   function Avail_Out (Strm : in Z_Stream) return UInt is
+   begin
+      return Strm.Avail_Out;
+   end Avail_Out;
+
+   ------------------
+   -- Deflate_Init --
+   ------------------
+
+   function Deflate_Init
+     (strm  : in Z_Streamp;
+      level : in Int := Z_DEFAULT_COMPRESSION)
+      return  Int is
+   begin
+      return deflateInit (strm, level, ZLIB_VERSION, Z_Stream_Size);
+   end Deflate_Init;
+
+   function Deflate_Init
+     (strm       : Z_Streamp;
+      level      : Int;
+      method     : Int;
+      windowBits : Int;
+      memLevel   : Int;
+      strategy   : Int)
+      return       Int is
+   begin
+      return deflateInit2
+               (strm,
+                level,
+                method,
+                windowBits,
+                memLevel,
+                strategy,
+                ZLIB_VERSION,
+                Z_Stream_Size);
+   end Deflate_Init;
+
+   ------------------
+   -- Inflate_Init --
+   ------------------
+
+   function Inflate_Init (strm : Z_Streamp) return Int is
+   begin
+      return inflateInit (strm, ZLIB_VERSION, Z_Stream_Size);
+   end Inflate_Init;
+
+   function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int is
+   begin
+      return inflateInit2 (strm, windowBits, ZLIB_VERSION, Z_Stream_Size);
+   end Inflate_Init;
+
+   function Last_Error_Message (Strm : in Z_Stream) return String is
+      use Interfaces.C.Strings;
+   begin
+      if Strm.msg = Null_Ptr then
+         return "";
+      else
+         return Value (Strm.msg);
+      end if;
+   end Last_Error_Message;
+
+   -------------
+   -- Need_In --
+   -------------
+
+   function Need_In (strm : Z_Stream) return Boolean is
+   begin
+      return strm.Avail_In = 0;
+   end Need_In;
+
+   --------------
+   -- Need_Out --
+   --------------
+
+   function Need_Out (strm : Z_Stream) return Boolean is
+   begin
+      return strm.Avail_Out = 0;
+   end Need_Out;
+
+   ------------
+   -- Set_In --
+   ------------
+
+   procedure Set_In
+     (Strm   : in out Z_Stream;
+      Buffer : in Byte_Access;
+      Size   : in UInt) is
+   begin
+      Strm.Next_In  := Buffer;
+      Strm.Avail_In := Size;
+   end Set_In;
+
+   procedure Set_In
+     (Strm   : in out Z_Stream;
+      Buffer : in Voidp;
+      Size   : in UInt) is
+   begin
+      Set_In (Strm, Bytes.To_Pointer (Buffer), Size);
+   end Set_In;
+
+   ------------------
+   -- Set_Mem_Func --
+   ------------------
+
+   procedure Set_Mem_Func
+     (Strm   : in out Z_Stream;
+      Opaque : in Voidp;
+      Alloc  : in alloc_func;
+      Free   : in free_func) is
+   begin
+      Strm.opaque := Opaque;
+      Strm.zalloc := Alloc;
+      Strm.zfree  := Free;
+   end Set_Mem_Func;
+
+   -------------
+   -- Set_Out --
+   -------------
+
+   procedure Set_Out
+     (Strm   : in out Z_Stream;
+      Buffer : in Byte_Access;
+      Size   : in UInt) is
+   begin
+      Strm.Next_Out  := Buffer;
+      Strm.Avail_Out := Size;
+   end Set_Out;
+
+   procedure Set_Out
+     (Strm   : in out Z_Stream;
+      Buffer : in Voidp;
+      Size   : in UInt) is
+   begin
+      Set_Out (Strm, Bytes.To_Pointer (Buffer), Size);
+   end Set_Out;
+
+   --------------
+   -- Total_In --
+   --------------
+
+   function Total_In (Strm : in Z_Stream) return ULong is
+   begin
+      return Strm.Total_In;
+   end Total_In;
+
+   ---------------
+   -- Total_Out --
+   ---------------
+
+   function Total_Out (Strm : in Z_Stream) return ULong is
+   begin
+      return Strm.Total_Out;
+   end Total_Out;
+
+end ZLib.Thin;
--- a/contrib/ada/zlib-thin.ads
+++ b/contrib/ada/zlib-thin.ads
@@ -0,0 +1,485 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-thin.ads,v 1.8 2003/08/12 13:16:51 vagul Exp $
+
+with Interfaces.C.Strings;
+with System.Address_To_Access_Conversions;
+
+private package ZLib.Thin is
+
+   --  From zconf.h
+
+   MAX_MEM_LEVEL : constant := 9;         --  zconf.h:105
+                                          --  zconf.h:105
+   MAX_WBITS : constant := 15;      --  zconf.h:115
+                                    --  32K LZ77 window
+                                    --  zconf.h:115
+   SEEK_SET : constant := 8#0000#;  --  zconf.h:244
+                                    --  Seek from beginning of file.
+                                    --  zconf.h:244
+   SEEK_CUR : constant := 1;        --  zconf.h:245
+                                    --  Seek from current position.
+                                    --  zconf.h:245
+   SEEK_END : constant := 2;        --  zconf.h:246
+                                    --  Set file pointer to EOF plus "offset"
+                                    --  zconf.h:246
+
+   type Byte is new Interfaces.C.unsigned_char; --  8 bits
+                                                --  zconf.h:214
+   type UInt is new Interfaces.C.unsigned;      --  16 bits or more
+                                                --  zconf.h:216
+   type Int is new Interfaces.C.int;
+
+   type ULong is new Interfaces.C.unsigned;     --  32 bits or more
+                                                --  zconf.h:217
+   subtype Chars_Ptr is Interfaces.C.Strings.chars_ptr;
+
+   type ULong_Access is access ULong;
+   type Int_Access is access Int;
+   subtype Voidp is System.Address;            --  zconf.h:232
+
+   package Bytes is new System.Address_To_Access_Conversions (Byte);
+
+   subtype Byte_Access is Bytes.Object_Pointer;
+
+   --  end from zconf
+
+   Z_NO_FLUSH : constant := 8#0000#;   --  zlib.h:125
+                                       --  zlib.h:125
+   Z_PARTIAL_FLUSH : constant := 1;       --  zlib.h:126
+                                          --  will be removed, use
+                                          --  Z_SYNC_FLUSH instead
+                                          --  zlib.h:126
+   Z_SYNC_FLUSH : constant := 2;       --  zlib.h:127
+                                       --  zlib.h:127
+   Z_FULL_FLUSH : constant := 3;       --  zlib.h:128
+                                       --  zlib.h:128
+   Z_FINISH : constant := 4;        --  zlib.h:129
+                                    --  zlib.h:129
+   Z_OK : constant := 8#0000#;   --  zlib.h:132
+                                 --  zlib.h:132
+   Z_STREAM_END : constant := 1;       --  zlib.h:133
+                                       --  zlib.h:133
+   Z_NEED_DICT : constant := 2;        --  zlib.h:134
+                                       --  zlib.h:134
+   Z_ERRNO : constant := -1;        --  zlib.h:135
+                                    --  zlib.h:135
+   Z_STREAM_ERROR : constant := -2;       --  zlib.h:136
+                                          --  zlib.h:136
+   Z_DATA_ERROR : constant := -3;      --  zlib.h:137
+                                       --  zlib.h:137
+   Z_MEM_ERROR : constant := -4;       --  zlib.h:138
+                                       --  zlib.h:138
+   Z_BUF_ERROR : constant := -5;       --  zlib.h:139
+                                       --  zlib.h:139
+   Z_VERSION_ERROR : constant := -6;      --  zlib.h:140
+                                          --  zlib.h:140
+   Z_NO_COMPRESSION : constant := 8#0000#;   --  zlib.h:145
+                                             --  zlib.h:145
+   Z_BEST_SPEED : constant := 1;       --  zlib.h:146
+                                       --  zlib.h:146
+   Z_BEST_COMPRESSION : constant := 9;       --  zlib.h:147
+                                             --  zlib.h:147
+   Z_DEFAULT_COMPRESSION : constant := -1;      --  zlib.h:148
+                                                --  zlib.h:148
+   Z_FILTERED : constant := 1;      --  zlib.h:151
+                                    --  zlib.h:151
+   Z_HUFFMAN_ONLY : constant := 2;        --  zlib.h:152
+                                          --  zlib.h:152
+   Z_DEFAULT_STRATEGY : constant := 8#0000#; --  zlib.h:153
+                                             --  zlib.h:153
+   Z_BINARY : constant := 8#0000#;  --  zlib.h:156
+                                    --  zlib.h:156
+   Z_ASCII : constant := 1;      --  zlib.h:157
+                                 --  zlib.h:157
+   Z_UNKNOWN : constant := 2;       --  zlib.h:158
+                                    --  zlib.h:158
+   Z_DEFLATED : constant := 8;      --  zlib.h:161
+                                    --  zlib.h:161
+   Z_NULL : constant := 8#0000#; --  zlib.h:164
+                                 --  for initializing zalloc, zfree, opaque
+                                 --  zlib.h:164
+   type gzFile is new Voidp;                  --  zlib.h:646
+
+   type Z_Stream is private;
+
+   type Z_Streamp is access all Z_Stream;     --  zlib.h:89
+
+   type alloc_func is access function
+     (Opaque : Voidp;
+      Items  : UInt;
+      Size   : UInt)
+      return Voidp; --  zlib.h:63
+
+   type free_func is access procedure (opaque : Voidp; address : Voidp);
+
+   function zlibVersion return Chars_Ptr;
+
+   function Deflate (strm : Z_Streamp; flush : Int) return Int;
+
+   function DeflateEnd (strm : Z_Streamp) return Int;
+
+   function Inflate (strm : Z_Streamp; flush : Int) return Int;
+
+   function InflateEnd (strm : Z_Streamp) return Int;
+
+   function deflateSetDictionary
+     (strm       : Z_Streamp;
+      dictionary : Byte_Access;
+      dictLength : UInt)
+      return       Int;
+
+   function deflateCopy (dest : Z_Streamp; source : Z_Streamp) return Int;
+   --  zlib.h:478
+
+   function deflateReset (strm : Z_Streamp) return Int; -- zlib.h:495
+
+   function deflateParams
+     (strm     : Z_Streamp;
+      level    : Int;
+      strategy : Int)
+      return     Int;       -- zlib.h:506
+
+   function inflateSetDictionary
+     (strm       : Z_Streamp;
+      dictionary : Byte_Access;
+      dictLength : UInt)
+      return       Int; --  zlib.h:548
+
+   function inflateSync (strm : Z_Streamp) return Int;  --  zlib.h:565
+
+   function inflateReset (strm : Z_Streamp) return Int; --  zlib.h:580
+
+   function compress
+     (dest      : Byte_Access;
+      destLen   : ULong_Access;
+      source    : Byte_Access;
+      sourceLen : ULong)
+      return      Int;           -- zlib.h:601
+
+   function compress2
+     (dest      : Byte_Access;
+      destLen   : ULong_Access;
+      source    : Byte_Access;
+      sourceLen : ULong;
+      level     : Int)
+      return      Int;          -- zlib.h:615
+
+   function uncompress
+     (dest      : Byte_Access;
+      destLen   : ULong_Access;
+      source    : Byte_Access;
+      sourceLen : ULong)
+      return      Int;
+
+   function gzopen (path : Chars_Ptr; mode : Chars_Ptr) return gzFile;
+
+   function gzdopen (fd : Int; mode : Chars_Ptr) return gzFile;
+
+   function gzsetparams
+     (file     : gzFile;
+      level    : Int;
+      strategy : Int)
+      return     Int;
+
+   function gzread
+     (file : gzFile;
+      buf  : Voidp;
+      len  : UInt)
+      return Int;
+
+   function gzwrite
+     (file : in gzFile;
+      buf  : in Voidp;
+      len  : in UInt)
+      return Int;
+
+   function gzprintf (file : in gzFile; format : in Chars_Ptr) return Int;
+
+   function gzputs (file : in gzFile; s : in Chars_Ptr) return Int;
+
+   function gzgets
+     (file : gzFile;
+      buf  : Chars_Ptr;
+      len  : Int)
+      return Chars_Ptr;
+
+   function gzputc (file : gzFile; char : Int) return Int;
+
+   function gzgetc (file : gzFile) return Int;
+
+   function gzflush (file : gzFile; flush : Int) return Int;
+
+   function gzseek
+     (file   : gzFile;
+      offset : Int;
+      whence : Int)
+      return   Int;
+
+   function gzrewind (file : gzFile) return Int;
+
+   function gztell (file : gzFile) return Int;
+
+   function gzeof (file : gzFile) return Int;
+
+   function gzclose (file : gzFile) return Int;
+
+   function gzerror (file : gzFile; errnum : Int_Access) return Chars_Ptr;
+
+   function adler32
+     (adler : ULong;
+      buf   : Byte_Access;
+      len   : UInt)
+      return  ULong;
+
+   function crc32
+     (crc  : ULong;
+      buf  : Byte_Access;
+      len  : UInt)
+      return ULong;
+
+   function deflateInit
+     (strm        : Z_Streamp;
+      level       : Int;
+      version     : Chars_Ptr;
+      stream_size : Int)
+      return        Int;
+
+   function Deflate_Init
+     (strm  : in Z_Streamp;
+      level : in Int := Z_DEFAULT_COMPRESSION)
+      return  Int;
+   pragma Inline (Deflate_Init);
+
+   function deflateInit2
+     (strm        : Z_Streamp;
+      level       : Int;
+      method      : Int;
+      windowBits  : Int;
+      memLevel    : Int;
+      strategy    : Int;
+      version     : Chars_Ptr;
+      stream_size : Int)
+      return        Int;
+
+   function Deflate_Init
+     (strm       : Z_Streamp;
+      level      : Int;
+      method     : Int;
+      windowBits : Int;
+      memLevel   : Int;
+      strategy   : Int)
+      return       Int;
+   pragma Inline (Deflate_Init);
+
+   function inflateInit
+     (strm        : Z_Streamp;
+      version     : Chars_Ptr;
+      stream_size : Int)
+      return        Int;
+
+   function Inflate_Init (strm : Z_Streamp) return Int;
+   pragma Inline (Inflate_Init);
+
+   function inflateInit2
+     (strm        : in Z_Streamp;
+      windowBits  : in Int;
+      version     : in Chars_Ptr;
+      stream_size : in Int)
+      return      Int;
+
+   function inflateBackInit
+     (strm        : in Z_Streamp;
+      windowBits  : in Int;
+      window      : in Byte_Access;
+      version     : in Chars_Ptr;
+      stream_size : in Int)
+      return      Int;
+   --  Size of window have to be 2**windowBits.
+
+   function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int;
+   pragma Inline (Inflate_Init);
+
+   function zError (err : Int) return Chars_Ptr;
+
+   function inflateSyncPoint (z : Z_Streamp) return Int;
+
+   function get_crc_table return ULong_Access;
+
+   --  Interface to the available fields of the z_stream structure.
+   --  The application must update next_in and avail_in when avail_in has
+   --  dropped to zero. It must update next_out and avail_out when avail_out
+   --  has dropped to zero. The application must initialize zalloc, zfree and
+   --  opaque before calling the init function.
+
+   function Need_In (strm : in Z_Stream) return Boolean;
+   --  return true when we do not need to setup Next_In and Avail_In fields.
+   pragma Inline (Need_In);
+
+   function Need_Out (strm : in Z_Stream) return Boolean;
+   --  return true when we do not need to setup Next_Out and Avail_Out field.
+   pragma Inline (Need_Out);
+
+   procedure Set_In
+     (Strm   : in out Z_Stream;
+      Buffer : in Byte_Access;
+      Size   : in UInt);
+   pragma Inline (Set_In);
+
+   procedure Set_In
+     (Strm   : in out Z_Stream;
+      Buffer : in Voidp;
+      Size   : in UInt);
+   pragma Inline (Set_In);
+
+   procedure Set_Out
+     (Strm   : in out Z_Stream;
+      Buffer : in Byte_Access;
+      Size   : in UInt);
+   pragma Inline (Set_Out);
+
+   procedure Set_Out
+     (Strm   : in out Z_Stream;
+      Buffer : in Voidp;
+      Size   : in UInt);
+   pragma Inline (Set_Out);
+
+   procedure Set_Mem_Func
+     (Strm   : in out Z_Stream;
+      Opaque : in Voidp;
+      Alloc  : in alloc_func;
+      Free   : in free_func);
+   pragma Inline (Set_Mem_Func);
+
+   function Last_Error_Message (Strm : in Z_Stream) return String;
+   pragma Inline (Last_Error_Message);
+
+   function Avail_Out (Strm : in Z_Stream) return UInt;
+   pragma Inline (Avail_Out);
+
+   function Avail_In (Strm : in Z_Stream) return UInt;
+   pragma Inline (Avail_In);
+
+   function Total_In (Strm : in Z_Stream) return ULong;
+   pragma Inline (Total_In);
+
+   function Total_Out (Strm : in Z_Stream) return ULong;
+   pragma Inline (Total_Out);
+
+   function inflateCopy
+     (dest   : in Z_Streamp;
+      Source : in Z_Streamp)
+      return Int;
+
+   function compressBound (Source_Len : in ULong) return ULong;
+
+   function deflateBound
+     (Strm       : in Z_Streamp;
+      Source_Len : in ULong)
+      return     ULong;
+
+   function gzungetc (C : in Int; File : in  gzFile) return Int;
+
+   function zlibCompileFlags return ULong;
+
+   function deflatePrime
+     (strm     : Z_Streamp;
+      bits     : Int;
+      value    : Int)
+      return     Int;
+
+private
+
+   type Z_Stream is record            -- zlib.h:68
+      Next_In   : Byte_Access;        -- next input byte
+      Avail_In  : UInt       := 0;    -- number of bytes available at next_in
+      Total_In  : ULong      := 0;    -- total nb of input bytes read so far
+      Next_Out  : Byte_Access;        -- next output byte should be put there
+      Avail_Out : UInt       := 0;    -- remaining free space at next_out
+      Total_Out : ULong      := 0;    -- total nb of bytes output so far
+      msg       : Chars_Ptr;          -- last error message, NULL if no error
+      state     : Voidp;              -- not visible by applications
+      zalloc    : alloc_func := null; -- used to allocate the internal state
+      zfree     : free_func  := null; -- used to free the internal state
+      opaque    : Voidp;              -- private data object passed to
+                                      --  zalloc and zfree
+      data_type : Int;                -- best guess about the data type:
+                                      --  ascii or binary
+      adler     : ULong;              -- adler32 value of the uncompressed
+                                      --  data
+      reserved  : ULong;              -- reserved for future use
+   end record;
+
+   pragma Convention (C, Z_Stream);
+
+   pragma Import (C, zlibVersion, "zlibVersion");
+   pragma Import (C, Deflate, "deflate");
+   pragma Import (C, DeflateEnd, "deflateEnd");
+   pragma Import (C, Inflate, "inflate");
+   pragma Import (C, InflateEnd, "inflateEnd");
+   pragma Import (C, deflateSetDictionary, "deflateSetDictionary");
+   pragma Import (C, deflateCopy, "deflateCopy");
+   pragma Import (C, deflateReset, "deflateReset");
+   pragma Import (C, deflateParams, "deflateParams");
+   pragma Import (C, inflateSetDictionary, "inflateSetDictionary");
+   pragma Import (C, inflateSync, "inflateSync");
+   pragma Import (C, inflateReset, "inflateReset");
+   pragma Import (C, compress, "compress");
+   pragma Import (C, compress2, "compress2");
+   pragma Import (C, uncompress, "uncompress");
+   pragma Import (C, gzopen, "gzopen");
+   pragma Import (C, gzdopen, "gzdopen");
+   pragma Import (C, gzsetparams, "gzsetparams");
+   pragma Import (C, gzread, "gzread");
+   pragma Import (C, gzwrite, "gzwrite");
+   pragma Import (C, gzprintf, "gzprintf");
+   pragma Import (C, gzputs, "gzputs");
+   pragma Import (C, gzgets, "gzgets");
+   pragma Import (C, gzputc, "gzputc");
+   pragma Import (C, gzgetc, "gzgetc");
+   pragma Import (C, gzflush, "gzflush");
+   pragma Import (C, gzseek, "gzseek");
+   pragma Import (C, gzrewind, "gzrewind");
+   pragma Import (C, gztell, "gztell");
+   pragma Import (C, gzeof, "gzeof");
+   pragma Import (C, gzclose, "gzclose");
+   pragma Import (C, gzerror, "gzerror");
+   pragma Import (C, adler32, "adler32");
+   pragma Import (C, crc32, "crc32");
+   pragma Import (C, deflateInit, "deflateInit_");
+   pragma Import (C, inflateInit, "inflateInit_");
+   pragma Import (C, deflateInit2, "deflateInit2_");
+   pragma Import (C, inflateInit2, "inflateInit2_");
+   pragma Import (C, zError, "zError");
+   pragma Import (C, inflateSyncPoint, "inflateSyncPoint");
+   pragma Import (C, get_crc_table, "get_crc_table");
+
+   --  added in zlib 1.2.1:
+
+   pragma Import (C, inflateCopy, "inflateCopy");
+   pragma Import (C, compressBound, "compressBound");
+   pragma Import (C, deflateBound, "deflateBound");
+   pragma Import (C, gzungetc, "gzungetc");
+   pragma Import (C, zlibCompileFlags, "zlibCompileFlags");
+   pragma Import (C, deflatePrime, "deflatePrime");
+
+   pragma Import (C, inflateBackInit, "inflateBackInit_");
+
+   --  I stopped binding the inflateBack routines, becouse realize that
+   --  it does not support zlib and gzip headers for now, and have no
+   --  symmetric deflateBack routines.
+   --  ZLib-Ada is symmetric regarding deflate/inflate data transformation
+   --  and has a similar generic callback interface for the
+   --  deflate/inflate transformation based on the regular Deflate/Inflate
+   --  routines.
+
+   --  pragma Import (C, inflateBack, "inflateBack");
+   --  pragma Import (C, inflateBackEnd, "inflateBackEnd");
+
+end ZLib.Thin;
--- a/contrib/ada/zlib.adb
+++ b/contrib/ada/zlib.adb
@@ -0,0 +1,674 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib.adb,v 1.19 2003/07/13 16:02:19 vagul Exp $
+
+with Ada.Exceptions;
+with Ada.Unchecked_Conversion;
+with Ada.Unchecked_Deallocation;
+
+with Interfaces.C.Strings;
+
+with ZLib.Thin;
+
+package body ZLib is
+
+   use type Thin.Int;
+
+   type Z_Stream is new Thin.Z_Stream;
+
+   type Return_Code_Enum is
+      (OK,
+       STREAM_END,
+       NEED_DICT,
+       ERRNO,
+       STREAM_ERROR,
+       DATA_ERROR,
+       MEM_ERROR,
+       BUF_ERROR,
+       VERSION_ERROR);
+
+   type Flate_Step_Function is access
+     function (Strm : Thin.Z_Streamp; flush : Thin.Int) return Thin.Int;
+   pragma Convention (C, Flate_Step_Function);
+
+   type Flate_End_Function is access
+      function (Ctrm : in Thin.Z_Streamp) return Thin.Int;
+   pragma Convention (C, Flate_End_Function);
+
+   type Flate_Type is record
+      Step : Flate_Step_Function;
+      Done : Flate_End_Function;
+   end record;
+
+   subtype Footer_Array is Stream_Element_Array (1 .. 8);
+
+   Simple_GZip_Header : constant Stream_Element_Array (1 .. 10)
+     := (16#1f#, 16#8b#,                 --  Magic header
+         16#08#,                         --  Z_DEFLATED
+         16#00#,                         --  Flags
+         16#00#, 16#00#, 16#00#, 16#00#, --  Time
+         16#00#,                         --  XFlags
+         16#03#                          --  OS code
+        );
+   --  The simplest gzip header is not for informational, but just for
+   --  gzip format compatibility.
+   --  Note that some code below is using assumption
+   --  Simple_GZip_Header'Last > Footer_Array'Last, so do not make
+   --  Simple_GZip_Header'Last <= Footer_Array'Last.
+
+   Return_Code : constant array (Thin.Int range <>) of Return_Code_Enum
+     := (0 => OK,
+         1 => STREAM_END,
+         2 => NEED_DICT,
+        -1 => ERRNO,
+        -2 => STREAM_ERROR,
+        -3 => DATA_ERROR,
+        -4 => MEM_ERROR,
+        -5 => BUF_ERROR,
+        -6 => VERSION_ERROR);
+
+   Flate : constant array (Boolean) of Flate_Type
+     := (True  => (Step => Thin.Deflate'Access,
+                   Done => Thin.DeflateEnd'Access),
+         False => (Step => Thin.Inflate'Access,
+                   Done => Thin.InflateEnd'Access));
+
+   Flush_Finish : constant array (Boolean) of Flush_Mode
+     := (True => Finish, False => No_Flush);
+
+   procedure Raise_Error (Stream : Z_Stream);
+   pragma Inline (Raise_Error);
+
+   procedure Raise_Error (Message : String);
+   pragma Inline (Raise_Error);
+
+   procedure Check_Error (Stream : Z_Stream; Code : Thin.Int);
+
+   procedure Free is new Ada.Unchecked_Deallocation
+      (Z_Stream, Z_Stream_Access);
+
+   function To_Thin_Access is new Ada.Unchecked_Conversion
+     (Z_Stream_Access, Thin.Z_Streamp);
+
+   procedure Translate_GZip
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   --  Separate translate routine for make gzip header.
+
+   procedure Translate_Auto
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   --  translate routine without additional headers.
+
+   -----------------
+   -- Check_Error --
+   -----------------
+
+   procedure Check_Error (Stream : Z_Stream; Code : Thin.Int) is
+      use type Thin.Int;
+   begin
+      if Code /= Thin.Z_OK then
+         Raise_Error
+            (Return_Code_Enum'Image (Return_Code (Code))
+              & ": " & Last_Error_Message (Stream));
+      end if;
+   end Check_Error;
+
+   -----------
+   -- Close --
+   -----------
+
+   procedure Close
+     (Filter       : in out Filter_Type;
+      Ignore_Error : in     Boolean := False)
+   is
+      Code : Thin.Int;
+   begin
+      Code := Flate (Filter.Compression).Done
+          (To_Thin_Access (Filter.Strm));
+
+      Filter.Opened := False;
+
+      if Ignore_Error or else Code = Thin.Z_OK then
+         Free (Filter.Strm);
+      else
+         declare
+            Error_Message : constant String
+              := Last_Error_Message (Filter.Strm.all);
+         begin
+            Free (Filter.Strm);
+            Ada.Exceptions.Raise_Exception
+               (ZLib_Error'Identity,
+                Return_Code_Enum'Image (Return_Code (Code))
+                & ": " & Error_Message);
+         end;
+      end if;
+   end Close;
+
+   -----------
+   -- CRC32 --
+   -----------
+
+   function CRC32
+     (CRC  : in Unsigned_32;
+      Data : in Ada.Streams.Stream_Element_Array)
+      return Unsigned_32
+   is
+      use Thin;
+   begin
+      return Unsigned_32 (crc32
+        (ULong (CRC),
+         Bytes.To_Pointer (Data'Address),
+         Data'Length));
+   end CRC32;
+
+   procedure CRC32
+     (CRC  : in out Unsigned_32;
+      Data : in     Ada.Streams.Stream_Element_Array) is
+   begin
+      CRC := CRC32 (CRC, Data);
+   end CRC32;
+
+   ------------------
+   -- Deflate_Init --
+   ------------------
+
+   procedure Deflate_Init
+     (Filter       : in out Filter_Type;
+      Level        : in     Compression_Level  := Default_Compression;
+      Strategy     : in     Strategy_Type      := Default_Strategy;
+      Method       : in     Compression_Method := Deflated;
+      Window_Bits  : in     Window_Bits_Type   := 15;
+      Memory_Level : in     Memory_Level_Type  := 8;
+      Header       : in     Header_Type        := Default)
+   is
+      use type Thin.Int;
+      Win_Bits : Thin.Int := Thin.Int (Window_Bits);
+   begin
+      --  We allow ZLib to make header only in case of default header type.
+      --  Otherwise we would either do header by ourselfs, or do not do
+      --  header at all.
+
+      if Header = None or else Header = GZip then
+         Win_Bits := -Win_Bits;
+      end if;
+
+      --  For the GZip CRC calculation and make headers.
+
+      if Header = GZip then
+         Filter.CRC    := 0;
+         Filter.Offset := Simple_GZip_Header'First;
+      else
+         Filter.Offset := Simple_GZip_Header'Last + 1;
+      end if;
+
+      Filter.Strm := new Z_Stream;
+      Filter.Compression := True;
+      Filter.Stream_End  := False;
+      Filter.Opened      := True;
+      Filter.Header      := Header;
+
+      if Thin.Deflate_Init
+           (To_Thin_Access (Filter.Strm),
+            Level      => Thin.Int (Level),
+            method     => Thin.Int (Method),
+            windowBits => Win_Bits,
+            memLevel   => Thin.Int (Memory_Level),
+            strategy   => Thin.Int (Strategy)) /= Thin.Z_OK
+      then
+         Raise_Error (Filter.Strm.all);
+      end if;
+   end Deflate_Init;
+
+   -----------
+   -- Flush --
+   -----------
+
+   procedure Flush
+     (Filter    : in out Filter_Type;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode)
+   is
+      No_Data : Stream_Element_Array := (1 .. 0 => 0);
+      Last    : Stream_Element_Offset;
+   begin
+      Translate (Filter, No_Data, Last, Out_Data, Out_Last, Flush);
+   end Flush;
+
+   -----------------------
+   -- Generic_Translate --
+   -----------------------
+
+   procedure Generic_Translate
+     (Filter : in out ZLib.Filter_Type;
+      In_Buffer_Size  : Integer := Default_Buffer_Size;
+      Out_Buffer_Size : Integer := Default_Buffer_Size)
+   is
+      In_Buffer : Stream_Element_Array
+         (1 .. Stream_Element_Offset (In_Buffer_Size));
+      Out_Buffer : Stream_Element_Array
+        (1 .. Stream_Element_Offset (Out_Buffer_Size));
+      Last : Stream_Element_Offset;
+      In_Last : Stream_Element_Offset;
+      In_First : Stream_Element_Offset;
+      Out_Last : Stream_Element_Offset;
+   begin
+      Main : loop
+         Data_In (In_Buffer, Last);
+
+         In_First := In_Buffer'First;
+
+         loop
+            Translate
+              (Filter,
+               In_Buffer (In_First .. Last),
+               In_Last,
+               Out_Buffer,
+               Out_Last,
+               Flush_Finish (Last < In_Buffer'First));
+
+            Data_Out (Out_Buffer (Out_Buffer'First .. Out_Last));
+
+            exit Main when Stream_End (Filter);
+
+            --  The end of in buffer.
+            exit when In_Last = Last;
+
+            In_First := In_Last + 1;
+         end loop;
+      end loop Main;
+
+   end Generic_Translate;
+
+   ------------------
+   -- Inflate_Init --
+   ------------------
+
+   procedure Inflate_Init
+     (Filter      : in out Filter_Type;
+      Window_Bits : in     Window_Bits_Type := 15;
+      Header      : in     Header_Type      := Default)
+   is
+      use type Thin.Int;
+      Win_Bits : Thin.Int := Thin.Int (Window_Bits);
+
+      procedure Check_Version;
+      --  Check the latest header types compatibility.
+
+      procedure Check_Version is
+      begin
+         if Version <= "1.1.4" then
+            Raise_Error
+              ("Inflate header type " & Header_Type'Image (Header)
+               & " incompatible with ZLib version " & Version);
+         end if;
+      end Check_Version;
+
+   begin
+      case Header is
+         when None =>
+            Check_Version;
+
+            --  Inflate data without headers determined
+            --  by negative Win_Bits.
+
+            Win_Bits := -Win_Bits;
+         when GZip =>
+            Check_Version;
+
+            --  Inflate gzip data defined by flag 16.
+
+            Win_Bits := Win_Bits + 16;
+         when Auto =>
+            Check_Version;
+
+            --  Inflate with automatic detection
+            --  of gzip or native header defined by flag 32.
+
+            Win_Bits := Win_Bits + 32;
+         when Default => null;
+      end case;
+
+      Filter.Strm := new Z_Stream;
+      Filter.Compression := False;
+      Filter.Stream_End  := False;
+      Filter.Opened      := True;
+      Filter.Header      := Header;
+
+      if Thin.Inflate_Init
+         (To_Thin_Access (Filter.Strm), Win_Bits) /= Thin.Z_OK
+      then
+         Raise_Error (Filter.Strm.all);
+      end if;
+   end Inflate_Init;
+
+   -----------------
+   -- Raise_Error --
+   -----------------
+
+   procedure Raise_Error (Message : String) is
+   begin
+      Ada.Exceptions.Raise_Exception (ZLib_Error'Identity, Message);
+   end Raise_Error;
+
+   procedure Raise_Error (Stream : Z_Stream) is
+   begin
+      Raise_Error (Last_Error_Message (Stream));
+   end Raise_Error;
+
+   ----------
+   -- Read --
+   ----------
+
+   procedure Read
+     (Filter : in out Filter_Type;
+      Item   :    out Ada.Streams.Stream_Element_Array;
+      Last   :    out Ada.Streams.Stream_Element_Offset)
+   is
+      In_Last    : Stream_Element_Offset;
+      Item_First : Ada.Streams.Stream_Element_Offset := Item'First;
+
+   begin
+      pragma Assert (Rest_First in Buffer'First .. Buffer'Last + 1);
+
+      loop
+         if Rest_First > Buffer'Last then
+            Read (Buffer, Rest_Last);
+            Rest_First := Buffer'First;
+         end if;
+
+         pragma Assert (Rest_Last in Buffer'First - 1 .. Buffer'Last);
+
+         Translate
+           (Filter   => Filter,
+            In_Data  => Buffer (Rest_First .. Rest_Last),
+            In_Last  => In_Last,
+            Out_Data => Item (Item_First .. Item'Last),
+            Out_Last => Last,
+            Flush    => Flush_Finish (Rest_Last < Rest_First));
+
+         Rest_First := In_Last + 1;
+
+         exit when Last = Item'Last or else Stream_End (Filter);
+
+         Item_First := Last + 1;
+      end loop;
+   end Read;
+
+   ----------------
+   -- Stream_End --
+   ----------------
+
+   function Stream_End (Filter : in Filter_Type) return Boolean is
+   begin
+      if Filter.Header = GZip and Filter.Compression then
+         return Filter.Stream_End
+            and then Filter.Offset = Footer_Array'Last + 1;
+      else
+         return Filter.Stream_End;
+      end if;
+   end Stream_End;
+
+   --------------
+   -- Total_In --
+   --------------
+
+   function Total_In (Filter : in Filter_Type) return Count is
+   begin
+      return Count (Thin.Total_In (To_Thin_Access (Filter.Strm).all));
+   end Total_In;
+
+   ---------------
+   -- Total_Out --
+   ---------------
+
+   function Total_Out (Filter : in Filter_Type) return Count is
+   begin
+      return Count (Thin.Total_Out (To_Thin_Access (Filter.Strm).all));
+   end Total_Out;
+
+   ---------------
+   -- Translate --
+   ---------------
+
+   procedure Translate
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode) is
+   begin
+      if Filter.Header = GZip and then Filter.Compression then
+         Translate_GZip
+           (Filter   => Filter,
+            In_Data  => In_Data,
+            In_Last  => In_Last,
+            Out_Data => Out_Data,
+            Out_Last => Out_Last,
+            Flush    => Flush);
+      else
+         Translate_Auto
+           (Filter   => Filter,
+            In_Data  => In_Data,
+            In_Last  => In_Last,
+            Out_Data => Out_Data,
+            Out_Last => Out_Last,
+            Flush    => Flush);
+      end if;
+   end Translate;
+
+   --------------------
+   -- Translate_Auto --
+   --------------------
+
+   procedure Translate_Auto
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode)
+   is
+      use type Thin.Int;
+      Code : Thin.Int;
+
+   begin
+      if Filter.Opened = False then
+         raise ZLib_Error;
+      end if;
+
+      if Out_Data'Length = 0 then
+         raise Constraint_Error;
+      end if;
+
+      Set_Out (Filter.Strm.all, Out_Data'Address, Out_Data'Length);
+      Set_In  (Filter.Strm.all, In_Data'Address, In_Data'Length);
+
+      Code := Flate (Filter.Compression).Step
+        (To_Thin_Access (Filter.Strm),
+         Thin.Int (Flush));
+
+      if Code = Thin.Z_STREAM_END then
+         Filter.Stream_End := True;
+      else
+         Check_Error (Filter.Strm.all, Code);
+      end if;
+
+      In_Last  := In_Data'Last
+         - Stream_Element_Offset (Avail_In (Filter.Strm.all));
+      Out_Last := Out_Data'Last
+         - Stream_Element_Offset (Avail_Out (Filter.Strm.all));
+
+   end Translate_Auto;
+
+   --------------------
+   -- Translate_GZip --
+   --------------------
+
+   procedure Translate_GZip
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode)
+   is
+      Out_First  : Stream_Element_Offset;
+
+      procedure Add_Data (Data : in Stream_Element_Array);
+      --  Add data to stream from the Filter.Offset till necessary,
+      --  used for add gzip headr/footer.
+
+      procedure Put_32
+        (Item : in out Stream_Element_Array;
+         Data : in     Unsigned_32);
+      pragma Inline (Put_32);
+
+      --------------
+      -- Add_Data --
+      --------------
+
+      procedure Add_Data (Data : in Stream_Element_Array) is
+         Data_First : Stream_Element_Offset renames Filter.Offset;
+         Data_Last  : Stream_Element_Offset;
+         Data_Len   : Stream_Element_Offset; --  -1
+         Out_Len    : Stream_Element_Offset; --  -1
+      begin
+         Out_First := Out_Last + 1;
+
+         if Data_First > Data'Last then
+            return;
+         end if;
+
+         Data_Len  := Data'Last     - Data_First;
+         Out_Len   := Out_Data'Last - Out_First;
+
+         if Data_Len <= Out_Len then
+            Out_Last  := Out_First  + Data_Len;
+            Data_Last := Data'Last;
+         else
+            Out_Last  := Out_Data'Last;
+            Data_Last := Data_First + Out_Len;
+         end if;
+
+         Out_Data (Out_First .. Out_Last) := Data (Data_First .. Data_Last);
+
+         Data_First := Data_Last + 1;
+         Out_First  := Out_Last + 1;
+      end Add_Data;
+
+      ------------
+      -- Put_32 --
+      ------------
+
+      procedure Put_32
+        (Item : in out Stream_Element_Array;
+         Data : in     Unsigned_32)
+      is
+         D : Unsigned_32 := Data;
+      begin
+         for J in Item'First .. Item'First + 3 loop
+            Item (J) := Stream_Element (D and 16#FF#);
+            D := Shift_Right (D, 8);
+         end loop;
+      end Put_32;
+
+   begin
+      Out_Last := Out_Data'First - 1;
+
+      if not Filter.Stream_End then
+         Add_Data (Simple_GZip_Header);
+
+         Translate_Auto
+           (Filter => Filter,
+            In_Data  => In_Data,
+            In_Last  => In_Last,
+            Out_Data => Out_Data (Out_First .. Out_Data'Last),
+            Out_Last => Out_Last,
+            Flush    => Flush);
+
+         CRC32 (Filter.CRC, In_Data (In_Data'First .. In_Last));
+
+      end if;
+
+      if Filter.Stream_End and then Out_Last <= Out_Data'Last then
+         --  This detection method would work only when
+         --  Simple_GZip_Header'Last > Footer_Array'Last
+
+         if Filter.Offset = Simple_GZip_Header'Last + 1 then
+            Filter.Offset := Footer_Array'First;
+         end if;
+
+         declare
+            Footer : Footer_Array;
+         begin
+            Put_32 (Footer, Filter.CRC);
+            Put_32 (Footer (Footer'First + 4 .. Footer'Last),
+                    Unsigned_32 (Total_In (Filter)));
+            Add_Data (Footer);
+         end;
+      end if;
+   end Translate_GZip;
+
+   -------------
+   -- Version --
+   -------------
+
+   function Version return String is
+   begin
+      return Interfaces.C.Strings.Value (Thin.zlibVersion);
+   end Version;
+
+   -----------
+   -- Write --
+   -----------
+
+   procedure Write
+     (Filter : in out Filter_Type;
+      Item   : in     Ada.Streams.Stream_Element_Array;
+      Flush  : in     Flush_Mode)
+   is
+      Buffer : Stream_Element_Array (1 .. Buffer_Size);
+      In_Last, Out_Last : Stream_Element_Offset;
+      In_First : Stream_Element_Offset := Item'First;
+   begin
+      if Item'Length = 0 and Flush = No_Flush then
+         return;
+      end if;
+
+      loop
+         Translate
+           (Filter => Filter,
+            In_Data  => Item (In_First .. Item'Last),
+            In_Last  => In_Last,
+            Out_Data => Buffer,
+            Out_Last => Out_Last,
+            Flush    => Flush);
+
+         if Out_Last >= Buffer'First then
+            Write (Buffer (1 .. Out_Last));
+         end if;
+
+         exit when In_Last = Item'Last or Stream_End (Filter);
+
+         In_First := In_Last + 1;
+      end loop;
+   end Write;
+
+end ZLib;
--- a/contrib/ada/zlib.ads
+++ b/contrib/ada/zlib.ads
@@ -0,0 +1,311 @@
+------------------------------------------------------------------------------
+--                      ZLib for Ada thick binding.                         --
+--                                                                          --
+--              Copyright (C) 2002-2003 Dmitriy Anisimkov                   --
+--                                                                          --
+--  This library is free software; you can redistribute it and/or modify    --
+--  it under the terms of the GNU General Public License as published by    --
+--  the Free Software Foundation; either version 2 of the License, or (at   --
+--  your option) any later version.                                         --
+--                                                                          --
+--  This library is distributed in the hope that it will be useful, but     --
+--  WITHOUT ANY WARRANTY; without even the implied warranty of              --
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU       --
+--  General Public License for more details.                                --
+--                                                                          --
+--  You should have received a copy of the GNU General Public License       --
+--  along with this library; if not, write to the Free Software Foundation, --
+--  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.          --
+--                                                                          --
+--  As a special exception, if other files instantiate generics from this   --
+--  unit, or you link this unit with other files to produce an executable,  --
+--  this  unit  does not  by itself cause  the resulting executable to be   --
+--  covered by the GNU General Public License. This exception does not      --
+--  however invalidate any other reasons why the executable file  might be  --
+--  covered by the  GNU Public License.                                     --
+------------------------------------------------------------------------------
+
+--  $Id: zlib.ads,v 1.17 2003/08/12 13:19:07 vagul Exp $
+
+with Ada.Streams;
+
+with Interfaces;
+
+package ZLib is
+
+   ZLib_Error : exception;
+
+   type Compression_Level is new Integer range -1 .. 9;
+
+   type Flush_Mode is private;
+
+   type Compression_Method is private;
+
+   type Window_Bits_Type is new Integer range 8 .. 15;
+
+   type Memory_Level_Type is new Integer range 1 .. 9;
+
+   type Unsigned_32 is new Interfaces.Unsigned_32;
+
+   type Strategy_Type is private;
+
+   type Header_Type is (None, Auto, Default, GZip);
+   --  Header type usage have a some limitation for inflate.
+   --  See comment for Inflate_Init.
+
+   subtype Count is Ada.Streams.Stream_Element_Count;
+
+   ----------------------------------
+   -- Compression method constants --
+   ----------------------------------
+
+   Deflated : constant Compression_Method;
+   --  Only one method allowed in this ZLib version.
+
+   ---------------------------------
+   -- Compression level constants --
+   ---------------------------------
+
+   No_Compression      : constant Compression_Level := 0;
+   Best_Speed          : constant Compression_Level := 1;
+   Best_Compression    : constant Compression_Level := 9;
+   Default_Compression : constant Compression_Level := -1;
+
+   --------------------------
+   -- Flush mode constants --
+   --------------------------
+
+   No_Flush      : constant Flush_Mode;
+   --  Regular way for compression, no flush
+
+   Partial_Flush : constant Flush_Mode;
+   --  will be removed, use Z_SYNC_FLUSH instead
+
+   Sync_Flush    : constant Flush_Mode;
+   --  all pending output is flushed to the output buffer and the output
+   --  is aligned on a byte boundary, so that the decompressor can get all
+   --  input data available so far. (In particular avail_in is zero after the
+   --  call if enough output space has been provided  before the call.)
+   --  Flushing may degrade compression for some compression algorithms and so
+   --  it should be used only when necessary.
+
+   Full_Flush    : constant Flush_Mode;
+   --  all output is flushed as with SYNC_FLUSH, and the compression state
+   --  is reset so that decompression can restart from this point if previous
+   --  compressed data has been damaged or if random access is desired. Using
+   --  FULL_FLUSH too often can seriously degrade the compression.
+
+   Finish        : constant Flush_Mode;
+   --  Just for tell the compressor that input data is complete.
+
+   ------------------------------------
+   -- Compression strategy constants --
+   ------------------------------------
+
+   --  RLE stategy could be used only in version 1.2.0 and later.
+
+   Filtered         : constant Strategy_Type;
+   Huffman_Only     : constant Strategy_Type;
+   RLE              : constant Strategy_Type;
+   Default_Strategy : constant Strategy_Type;
+
+   Default_Buffer_Size : constant := 4096;
+
+   type Filter_Type is limited private;
+   --  The filter is for compression and for decompression.
+   --  The usage of the type is depend of its initialization.
+
+   function Version return String;
+   pragma Inline (Version);
+   --  Return string representation of the ZLib version.
+
+   procedure Deflate_Init
+     (Filter       : in out Filter_Type;
+      Level        : in     Compression_Level  := Default_Compression;
+      Strategy     : in     Strategy_Type      := Default_Strategy;
+      Method       : in     Compression_Method := Deflated;
+      Window_Bits  : in     Window_Bits_Type   := 15;
+      Memory_Level : in     Memory_Level_Type  := 8;
+      Header       : in     Header_Type        := Default);
+   --  Compressor initialization.
+   --  When Header parameter is Auto or Default, then default zlib header
+   --  would be provided for compressed data.
+   --  When Header is GZip, then gzip header would be set instead of
+   --  default header.
+   --  When Header is None, no header would be set for compressed data.
+
+   procedure Inflate_Init
+     (Filter      : in out Filter_Type;
+      Window_Bits : in     Window_Bits_Type := 15;
+      Header      : in     Header_Type      := Default);
+   --  Decompressor initialization.
+   --  Default header type mean that ZLib default header is expecting in the
+   --  input compressed stream.
+   --  Header type None mean that no header is expecting in the input stream.
+   --  GZip header type mean that GZip header is expecting in the
+   --  input compressed stream.
+   --  Auto header type mean that header type (GZip or Native) would be
+   --  detected automatically in the input stream.
+   --  Note that header types parameter values None, GZip and Auto is
+   --  supporting for inflate routine only in ZLib versions 1.2.0.2 and later.
+   --  Deflate_Init is supporting all header types.
+
+   procedure Close
+     (Filter       : in out Filter_Type;
+      Ignore_Error : in     Boolean := False);
+   --  Closing the compression or decompressor.
+   --  If stream is closing before the complete and Ignore_Error is False,
+   --  The exception would be raised.
+
+   generic
+      with procedure Data_In
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset);
+      with procedure Data_Out
+        (Item : in Ada.Streams.Stream_Element_Array);
+   procedure Generic_Translate
+     (Filter          : in out Filter_Type;
+      In_Buffer_Size  : in     Integer := Default_Buffer_Size;
+      Out_Buffer_Size : in     Integer := Default_Buffer_Size);
+   --  Compressing/decompressing data arrived from Data_In routine
+   --  to the Data_Out routine. User should provide Data_In and Data_Out
+   --  for compression/decompression data flow.
+   --  Compression or decompression depend on initialization of Filter.
+
+   function Total_In (Filter : in Filter_Type) return Count;
+   pragma Inline (Total_In);
+   --  Return total number of input bytes read so far.
+
+   function Total_Out (Filter : in Filter_Type) return Count;
+   pragma Inline (Total_Out);
+   --  Return total number of bytes output so far.
+
+   function CRC32
+     (CRC    : in Unsigned_32;
+      Data   : in Ada.Streams.Stream_Element_Array)
+      return Unsigned_32;
+   pragma Inline (CRC32);
+   --  Calculate CRC32, it could be necessary for make gzip format.
+
+   procedure CRC32
+     (CRC  : in out Unsigned_32;
+      Data : in     Ada.Streams.Stream_Element_Array);
+   pragma Inline (CRC32);
+   --  Calculate CRC32, it could be necessary for make gzip format.
+
+   -------------------------------------------------
+   --  Below is more complex low level routines.  --
+   -------------------------------------------------
+
+   procedure Translate
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   --  Compressing/decompressing the datas from In_Data buffer to the
+   --  Out_Data buffer.
+   --  In_Data is incoming data portion,
+   --  In_Last is the index of last element from In_Data accepted by the
+   --  Filter.
+   --  Out_Data is the buffer for output data from the filter.
+   --  Out_Last is the last element of the received data from Filter.
+   --  To tell the filter that incoming data is complete put the
+   --  Flush parameter to FINISH.
+
+   function Stream_End (Filter : in Filter_Type) return Boolean;
+   pragma Inline (Stream_End);
+   --  Return the true when the stream is complete.
+
+   procedure Flush
+     (Filter    : in out Filter_Type;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   pragma Inline (Flush);
+   --  Flushing the data from the compressor.
+
+   generic
+      with procedure Write
+        (Item : in Ada.Streams.Stream_Element_Array);
+      --  User should provide this routine for accept
+      --  compressed/decompressed data.
+
+      Buffer_Size : in Ada.Streams.Stream_Element_Offset
+         := Default_Buffer_Size;
+      --  Buffer size for Write user routine.
+
+   procedure Write
+     (Filter  : in out Filter_Type;
+      Item    : in     Ada.Streams.Stream_Element_Array;
+      Flush   : in     Flush_Mode);
+   --  Compressing/Decompressing data from Item to the
+   --  generic parameter procedure Write.
+   --  Output buffer size could be set in Buffer_Size generic parameter.
+
+   generic
+      with procedure Read
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset);
+      --  User should provide data for compression/decompression
+      --  thru this routine.
+
+      Buffer : in out Ada.Streams.Stream_Element_Array;
+      --  Buffer for keep remaining data from the previous
+      --  back read.
+
+      Rest_First, Rest_Last : in out Ada.Streams.Stream_Element_Offset;
+      --  Rest_First have to be initialized to Buffer'Last + 1
+      --  before usage.
+
+   procedure Read
+     (Filter : in out Filter_Type;
+      Item   :    out Ada.Streams.Stream_Element_Array;
+      Last   :    out Ada.Streams.Stream_Element_Offset);
+   --  Compressing/Decompressing data from generic parameter
+   --  procedure Read to the Item.
+   --  User should provide Buffer for the operation
+   --  and Rest_First variable first time initialized to the Buffer'Last + 1.
+
+private
+
+   use Ada.Streams;
+
+   type Flush_Mode is new Integer range 0 .. 4;
+
+   type Compression_Method is new Integer range 8 .. 8;
+
+   type Strategy_Type is new Integer range 0 .. 3;
+
+   No_Flush      : constant Flush_Mode := 0;
+   Sync_Flush    : constant Flush_Mode := 2;
+   Full_Flush    : constant Flush_Mode := 3;
+   Finish        : constant Flush_Mode := 4;
+   Partial_Flush : constant Flush_Mode := 1;
+   --  will be removed, use Z_SYNC_FLUSH instead
+
+   Filtered         : constant Strategy_Type := 1;
+   Huffman_Only     : constant Strategy_Type := 2;
+   RLE              : constant Strategy_Type := 3;
+   Default_Strategy : constant Strategy_Type := 0;
+
+   Deflated : constant Compression_Method := 8;
+
+   type Z_Stream;
+
+   type Z_Stream_Access is access all Z_Stream;
+
+   type Filter_Type is record
+      Strm        : Z_Stream_Access;
+      Compression : Boolean;
+      Stream_End  : Boolean;
+      Header      : Header_Type;
+      CRC         : Unsigned_32;
+      Offset      : Stream_Element_Offset;
+      --  Offset for gzip header/footer output.
+
+      Opened      : Boolean := False;
+   end record;
+
+end ZLib;
--- a/contrib/ada/zlib.gpr
+++ b/contrib/ada/zlib.gpr
@@ -0,0 +1,21 @@
+project Zlib is
+
+   for Languages use ("Ada");
+   for Source_Dirs use (".");
+   for Object_Dir use ".";
+   for Main use ("test.adb", "mtest.adb", "read.adb");
+
+   package Compiler is
+      for Default_Switches ("ada") use ("-gnatwbcfilopru", "-gnatVcdfimorst", "-gnatyabcefhiklmnoprst");
+   end Compiler;
+
+   package Linker is
+      for Default_Switches ("ada") use ("-lz");
+   end Linker;
+
+   package Builder is
+      for Default_Switches ("ada") use ("-s", "-gnatQ");
+   end Builder;
+
+end Zlib;
+
--- a/contrib/asm386/gvmat32.asm
+++ b/contrib/asm386/gvmat32.asm
@@ -1,559 +0,0 @@
-;
-; gvmat32.asm -- Asm portion of the optimized longest_match for 32 bits x86
-; Copyright (C) 1995-1996 Jean-loup Gailly and Gilles Vollant.
-; File written by Gilles Vollant, by modifiying the longest_match
-;  from Jean-loup Gailly in deflate.c
-; It need wmask == 0x7fff
-;     (assembly code is faster with a fixed wmask)
-;
-; For Visual C++ 4.2 and ML 6.11c (version in directory \MASM611C of Win95 DDK)
-;   I compile with : "ml /coff /Zi /c gvmat32.asm"
-;
-
-;uInt longest_match_7fff(s, cur_match)
-;    deflate_state *s;
-;    IPos cur_match;                             /* current match */
-
-        NbStack         equ     76
-        cur_match       equ     dword ptr[esp+NbStack-0]
-        str_s           equ     dword ptr[esp+NbStack-4]
-; 5 dword on top (ret,ebp,esi,edi,ebx)
-        adrret          equ     dword ptr[esp+NbStack-8]
-        pushebp         equ     dword ptr[esp+NbStack-12]
-        pushedi         equ     dword ptr[esp+NbStack-16]
-        pushesi         equ     dword ptr[esp+NbStack-20]
-        pushebx         equ     dword ptr[esp+NbStack-24]
-
-        chain_length    equ     dword ptr [esp+NbStack-28]
-        limit           equ     dword ptr [esp+NbStack-32]
-        best_len        equ     dword ptr [esp+NbStack-36]
-        window          equ     dword ptr [esp+NbStack-40]
-        prev            equ     dword ptr [esp+NbStack-44]
-        scan_start      equ      word ptr [esp+NbStack-48]
-        wmask           equ     dword ptr [esp+NbStack-52]
-        match_start_ptr equ     dword ptr [esp+NbStack-56]
-        nice_match      equ     dword ptr [esp+NbStack-60]
-        scan            equ     dword ptr [esp+NbStack-64]
-
-        windowlen       equ     dword ptr [esp+NbStack-68]
-        match_start     equ     dword ptr [esp+NbStack-72]
-        strend          equ     dword ptr [esp+NbStack-76]
-        NbStackAdd      equ     (NbStack-24)
-
-    .386p
-
-    name    gvmatch
-    .MODEL  FLAT
-
-
-
-;  all the +4 offsets are due to the addition of pending_buf_size (in zlib
-;  in the deflate_state structure since the asm code was first written
-;  (if you compile with zlib 1.0.4 or older, remove the +4).
-;  Note : these value are good with a 8 bytes boundary pack structure
-    dep_chain_length    equ     70h+4
-    dep_window          equ     2ch+4
-    dep_strstart        equ     60h+4
-    dep_prev_length     equ     6ch+4
-    dep_nice_match      equ     84h+4
-    dep_w_size          equ     20h+4
-    dep_prev            equ     34h+4
-    dep_w_mask          equ     28h+4
-    dep_good_match      equ     80h+4
-    dep_match_start     equ     64h+4
-    dep_lookahead       equ     68h+4
-
-
-_TEXT                   segment
-
-IFDEF NOUNDERLINE
-                        public  longest_match_7fff
-;                        public  match_init
-ELSE
-                        public  _longest_match_7fff
-;                        public  _match_init
-ENDIF
-
-    MAX_MATCH           equ     258
-    MIN_MATCH           equ     3
-    MIN_LOOKAHEAD       equ     (MAX_MATCH+MIN_MATCH+1)
-
-
-
-IFDEF NOUNDERLINE
-;match_init      proc near
-;                ret
-;match_init      endp
-ELSE
-;_match_init     proc near
-;                ret
-;_match_init     endp
-ENDIF
-
-
-IFDEF NOUNDERLINE
-longest_match_7fff   proc near
-ELSE
-_longest_match_7fff  proc near
-ENDIF
-
-        mov     edx,[esp+4]
-
-
-
-        push    ebp
-        push    edi
-        push    esi
-        push    ebx
-
-        sub     esp,NbStackAdd
-
-; initialize or check the variables used in match.asm.
-        mov     ebp,edx
-
-; chain_length = s->max_chain_length
-; if (prev_length>=good_match) chain_length >>= 2
-        mov     edx,[ebp+dep_chain_length]
-        mov     ebx,[ebp+dep_prev_length]
-        cmp     [ebp+dep_good_match],ebx
-        ja      noshr
-        shr     edx,2
-noshr:
-; we increment chain_length because in the asm, the --chain_lenght is in the beginning of the loop
-        inc     edx
-        mov     edi,[ebp+dep_nice_match]
-        mov     chain_length,edx
-        mov     eax,[ebp+dep_lookahead]
-        cmp     eax,edi
-; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
-        jae     nolookaheadnicematch
-        mov     edi,eax
-nolookaheadnicematch:
-; best_len = s->prev_length
-        mov     best_len,ebx
-
-; window = s->window
-        mov     esi,[ebp+dep_window]
-        mov     ecx,[ebp+dep_strstart]
-        mov     window,esi
-
-        mov     nice_match,edi
-; scan = window + strstart
-        add     esi,ecx
-        mov     scan,esi
-; dx = *window
-        mov     dx,word ptr [esi]
-; bx = *(window+best_len-1)
-        mov     bx,word ptr [esi+ebx-1]
-        add     esi,MAX_MATCH-1
-; scan_start = *scan
-        mov     scan_start,dx
-; strend = scan + MAX_MATCH-1
-        mov     strend,esi
-; bx = scan_end = *(window+best_len-1)
-
-;    IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
-;        s->strstart - (IPos)MAX_DIST(s) : NIL;
-
-        mov     esi,[ebp+dep_w_size]
-        sub     esi,MIN_LOOKAHEAD
-; here esi = MAX_DIST(s)
-        sub     ecx,esi
-        ja      nodist
-        xor     ecx,ecx
-nodist:
-        mov     limit,ecx
-
-; prev = s->prev
-        mov     edx,[ebp+dep_prev]
-        mov     prev,edx
-
-;
-        mov     edx,dword ptr [ebp+dep_match_start]
-        mov     bp,scan_start
-        mov     eax,cur_match
-        mov     match_start,edx
-
-        mov     edx,window
-        mov     edi,edx
-        add     edi,best_len
-        mov     esi,prev
-        dec     edi
-; windowlen = window + best_len -1
-        mov     windowlen,edi
-
-        jmp     beginloop2
-        align   4
-
-; here, in the loop
-;       eax = ax = cur_match
-;       ecx = limit
-;        bx = scan_end
-;        bp = scan_start
-;       edi = windowlen (window + best_len -1)
-;       esi = prev
-
-
-;// here; chain_length <=16
-normalbeg0add16:
-        add     chain_length,16
-        jz      exitloop
-normalbeg0:
-        cmp     word ptr[edi+eax],bx
-        je      normalbeg2noroll
-rcontlabnoroll:
-; cur_match = prev[cur_match & wmask]
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
-; if cur_match > limit, go to exitloop
-        cmp     ecx,eax
-        jnb     exitloop
-; if --chain_length != 0, go to exitloop
-        dec     chain_length
-        jnz     normalbeg0
-        jmp     exitloop
-
-normalbeg2noroll:
-; if (scan_start==*(cur_match+window)) goto normalbeg2
-        cmp     bp,word ptr[edx+eax]
-        jne     rcontlabnoroll
-        jmp     normalbeg2
-
-contloop3:
-        mov     edi,windowlen
-
-; cur_match = prev[cur_match & wmask]
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
-; if cur_match > limit, go to exitloop
-        cmp     ecx,eax
-jnbexitloopshort1:
-        jnb     exitloop
-; if --chain_length != 0, go to exitloop
-
-
-; begin the main loop
-beginloop2:
-        sub     chain_length,16+1
-; if chain_length <=16, don't use the unrolled loop
-        jna     normalbeg0add16
-
-do16:
-        cmp     word ptr[edi+eax],bx
-        je      normalbeg2dc0
-
-maccn   MACRO   lab
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
-        cmp     ecx,eax
-        jnb     exitloop
-        cmp     word ptr[edi+eax],bx
-        je      lab
-        ENDM
-
-rcontloop0:
-        maccn   normalbeg2dc1
-
-rcontloop1:
-        maccn   normalbeg2dc2
-
-rcontloop2:
-        maccn   normalbeg2dc3
-
-rcontloop3:
-        maccn   normalbeg2dc4
-
-rcontloop4:
-        maccn   normalbeg2dc5
-
-rcontloop5:
-        maccn   normalbeg2dc6
-
-rcontloop6:
-        maccn   normalbeg2dc7
-
-rcontloop7:
-        maccn   normalbeg2dc8
-
-rcontloop8:
-        maccn   normalbeg2dc9
-
-rcontloop9:
-        maccn   normalbeg2dc10
-
-rcontloop10:
-        maccn   short normalbeg2dc11
-
-rcontloop11:
-        maccn   short normalbeg2dc12
-
-rcontloop12:
-        maccn   short normalbeg2dc13
-
-rcontloop13:
-        maccn   short normalbeg2dc14
-
-rcontloop14:
-        maccn   short normalbeg2dc15
-
-rcontloop15:
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
-        cmp     ecx,eax
-        jnb     exitloop
-
-        sub     chain_length,16
-        ja      do16
-        jmp     normalbeg0add16
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-normbeg MACRO   rcontlab,valsub
-; if we are here, we know that *(match+best_len-1) == scan_end
-        cmp     bp,word ptr[edx+eax]
-; if (match != scan_start) goto rcontlab
-        jne     rcontlab
-; calculate the good chain_length, and we'll compare scan and match string
-        add     chain_length,16-valsub
-        jmp     iseq
-        ENDM
-
-
-normalbeg2dc11:
-        normbeg rcontloop11,11
-
-normalbeg2dc12:
-        normbeg short rcontloop12,12
-
-normalbeg2dc13:
-        normbeg short rcontloop13,13
-
-normalbeg2dc14:
-        normbeg short rcontloop14,14
-
-normalbeg2dc15:
-        normbeg short rcontloop15,15
-
-normalbeg2dc10:
-        normbeg rcontloop10,10
-
-normalbeg2dc9:
-        normbeg rcontloop9,9
-
-normalbeg2dc8:
-        normbeg rcontloop8,8
-
-normalbeg2dc7:
-        normbeg rcontloop7,7
-
-normalbeg2dc6:
-        normbeg rcontloop6,6
-
-normalbeg2dc5:
-        normbeg rcontloop5,5
-
-normalbeg2dc4:
-        normbeg rcontloop4,4
-
-normalbeg2dc3:
-        normbeg rcontloop3,3
-
-normalbeg2dc2:
-        normbeg rcontloop2,2
-
-normalbeg2dc1:
-        normbeg rcontloop1,1
-
-normalbeg2dc0:
-        normbeg rcontloop0,0
-
-
-; we go in normalbeg2 because *(ushf*)(match+best_len-1) == scan_end
-
-normalbeg2:
-        mov     edi,window
-
-        cmp     bp,word ptr[edi+eax]
-        jne     contloop3                   ; if *(ushf*)match != scan_start, continue
-
-iseq:
-; if we are here, we know that *(match+best_len-1) == scan_end
-; and (match == scan_start)
-
-        mov     edi,edx
-        mov     esi,scan                    ; esi = scan
-        add     edi,eax                     ; edi = window + cur_match = match
-
-        mov     edx,[esi+3]                 ; compare manually dword at match+3
-        xor     edx,[edi+3]                 ; and scan +3
-
-        jz      begincompare                ; if equal, go to long compare
-
-; we will determine the unmatch byte and calculate len (in esi)
-        or      dl,dl
-        je      eq1rr
-        mov     esi,3
-        jmp     trfinval
-eq1rr:
-        or      dx,dx
-        je      eq1
-
-        mov     esi,4
-        jmp     trfinval
-eq1:
-        and     edx,0ffffffh
-        jz      eq11
-        mov     esi,5
-        jmp     trfinval
-eq11:
-        mov     esi,6
-        jmp     trfinval
-
-begincompare:
-        ; here we now scan and match begin same
-        add     edi,6
-        add     esi,6
-        mov     ecx,(MAX_MATCH-(2+4))/4     ; scan for at most MAX_MATCH bytes
-        repe    cmpsd                       ; loop until mismatch
-
-        je      trfin                       ; go to trfin if not unmatch
-; we determine the unmatch byte
-        sub     esi,4
-        mov     edx,[edi-4]
-        xor     edx,[esi]
-
-        or      dl,dl
-        jnz     trfin
-        inc     esi
-
-        or      dx,dx
-        jnz     trfin
-        inc     esi
-
-        and     edx,0ffffffh
-        jnz     trfin
-        inc     esi
-
-trfin:
-        sub     esi,scan          ; esi = len
-trfinval:
-; here we have finised compare, and esi contain len of equal string
-        cmp     esi,best_len        ; if len > best_len, go newbestlen
-        ja      short newbestlen
-; now we restore edx, ecx and esi, for the big loop
-        mov     esi,prev
-        mov     ecx,limit
-        mov     edx,window
-        jmp     contloop3
-
-newbestlen:
-        mov     best_len,esi        ; len become best_len
-
-        mov     match_start,eax     ; save new position as match_start
-        cmp     esi,nice_match      ; if best_len >= nice_match, exit
-        jae     exitloop
-        mov     ecx,scan
-        mov     edx,window          ; restore edx=window
-        add     ecx,esi
-        add     esi,edx
-
-        dec     esi
-        mov     windowlen,esi       ; windowlen = window + best_len-1
-        mov     bx,[ecx-1]          ; bx = *(scan+best_len-1) = scan_end
-
-; now we restore ecx and esi, for the big loop :
-        mov     esi,prev
-        mov     ecx,limit
-        jmp     contloop3
-
-exitloop:
-; exit : s->match_start=match_start
-        mov     ebx,match_start
-        mov     ebp,str_s
-        mov     ecx,best_len
-        mov     dword ptr [ebp+dep_match_start],ebx        
-        mov     eax,dword ptr [ebp+dep_lookahead]
-        cmp     ecx,eax
-        ja      minexlo
-        mov     eax,ecx
-minexlo:
-; return min(best_len,s->lookahead)
-        
-; restore stack and register ebx,esi,edi,ebp
-        add     esp,NbStackAdd
-
-        pop     ebx
-        pop     esi
-        pop     edi
-        pop     ebp
-        ret
-InfoAuthor:
-; please don't remove this string !
-; Your are free use gvmat32 in any fre or commercial apps if you don't remove the string in the binary!
-        db     0dh,0ah,"GVMat32 optimised assembly code written 1996-98 by Gilles Vollant",0dh,0ah
-
-
-
-IFDEF NOUNDERLINE
-longest_match_7fff   endp
-ELSE
-_longest_match_7fff  endp
-ENDIF
-
-
-IFDEF NOUNDERLINE
-cpudetect32     proc near
-ELSE
-_cpudetect32    proc near
-ENDIF
-
-
-	pushfd                  ; push original EFLAGS
-	pop     eax             ; get original EFLAGS
-	mov     ecx, eax        ; save original EFLAGS
-	xor     eax, 40000h     ; flip AC bit in EFLAGS
-	push    eax             ; save new EFLAGS value on stack
-	popfd                   ; replace current EFLAGS value
-	pushfd                  ; get new EFLAGS
-	pop     eax             ; store new EFLAGS in EAX
-	xor     eax, ecx        ; can<61>t toggle AC bit, processor=80386
-	jz      end_cpu_is_386  ; jump if 80386 processor
-	push    ecx
-	popfd                   ; restore AC bit in EFLAGS first
-
-	pushfd
-	pushfd
-	pop     ecx
-			
-	mov     eax, ecx        ; get original EFLAGS
-	xor     eax, 200000h    ; flip ID bit in EFLAGS
-	push    eax             ; save new EFLAGS value on stack
-	popfd                   ; replace current EFLAGS value
-	pushfd                  ; get new EFLAGS
-	pop		eax	            ; store new EFLAGS in EAX
-	popfd                   ; restore original EFLAGS
-	xor		eax, ecx        ; can<61>t toggle ID bit,
-	je		is_old_486		; processor=old
-
-	mov     eax,1
-	db      0fh,0a2h        ;CPUID   
-
-exitcpudetect:
-	ret
-
-end_cpu_is_386:
-	mov     eax,0300h
-	jmp     exitcpudetect
-
-is_old_486:
-	mov     eax,0400h
-	jmp     exitcpudetect
-
-IFDEF NOUNDERLINE
-cpudetect32     endp
-ELSE
-_cpudetect32    endp
-ENDIF
-
-_TEXT   ends
-end
--- a/contrib/asm386/gvmat32c.c
+++ b/contrib/asm386/gvmat32c.c
@@ -1,200 +0,0 @@
-/* gvmat32.c -- C portion of the optimized longest_match for 32 bits x86
- * Copyright (C) 1995-1996 Jean-loup Gailly and Gilles Vollant.
- * File written by Gilles Vollant, by modifiying the longest_match
- *  from Jean-loup Gailly in deflate.c
- *  it prepare all parameters and call the assembly longest_match_gvasm
- *  longest_match execute standard C code is wmask != 0x7fff
- *     (assembly code is faster with a fixed wmask)
- *
- */
-
-#include "deflate.h"
-
-#undef FAR
-#include <windows.h>
-
-#ifdef ASMV
-#define NIL 0
-
-#define UNALIGNED_OK
-
-
-/* if your C compiler don't add underline before function name,
-		define ADD_UNDERLINE_ASMFUNC */
-#ifdef ADD_UNDERLINE_ASMFUNC
-#define longest_match_7fff _longest_match_7fff
-#endif
-
-
-
-void match_init()
-{
-}
-
-unsigned long cpudetect32();
-
-uInt longest_match_c(
-    deflate_state *s,
-    IPos cur_match);                             /* current match */
-
-
-uInt longest_match_7fff(
-    deflate_state *s,
-    IPos cur_match);                             /* current match */
-
-uInt longest_match(
-    deflate_state *s,
-    IPos cur_match)                             /* current match */
-{
-	static uInt iIsPPro=2;
-
-    if ((s->w_mask == 0x7fff) && (iIsPPro==0))
-        return longest_match_7fff(s,cur_match);
-
-	if (iIsPPro==2)
-		iIsPPro = (((cpudetect32()/0x100)&0xf)>=6) ? 1 : 0;
-
-	return longest_match_c(s,cur_match);
-}
-
-
-
-uInt longest_match_c(s, cur_match)
-    deflate_state *s;
-    IPos cur_match;                             /* current match */
-{
-    unsigned chain_length = s->max_chain_length;/* max hash chain length */
-    register Bytef *scan = s->window + s->strstart; /* current string */
-    register Bytef *match;                       /* matched string */
-    register int len;                           /* length of current match */
-    int best_len = s->prev_length;              /* best match length so far */
-    int nice_match = s->nice_match;             /* stop if match long enough */
-    IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
-        s->strstart - (IPos)MAX_DIST(s) : NIL;
-    /* Stop when cur_match becomes <= limit. To simplify the code,
-     * we prevent matches with the string of window index 0.
-     */
-    Posf *prev = s->prev;
-    uInt wmask = s->w_mask;
-
-#ifdef UNALIGNED_OK
-    /* Compare two bytes at a time. Note: this is not always beneficial.
-     * Try with and without -DUNALIGNED_OK to check.
-     */
-    register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
-    register ush scan_start = *(ushf*)scan;
-    register ush scan_end   = *(ushf*)(scan+best_len-1);
-#else
-    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
-    register Byte scan_end1  = scan[best_len-1];
-    register Byte scan_end   = scan[best_len];
-#endif
-
-    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
-     * It is easy to get rid of this optimization if necessary.
-     */
-    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
-
-    /* Do not waste too much time if we already have a good match: */
-    if (s->prev_length >= s->good_match) {
-        chain_length >>= 2;
-    }
-    /* Do not look for matches beyond the end of the input. This is necessary
-     * to make deflate deterministic.
-     */
-    if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
-
-    Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
-
-    do {
-        Assert(cur_match < s->strstart, "no future");
-        match = s->window + cur_match;
-
-        /* Skip to next match if the match length cannot increase
-         * or if the match length is less than 2:
-         */
-#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
-        /* This code assumes sizeof(unsigned short) == 2. Do not use
-         * UNALIGNED_OK if your compiler uses a different size.
-         */
-        if (*(ushf*)(match+best_len-1) != scan_end ||
-            *(ushf*)match != scan_start) continue;
-
-        /* It is not necessary to compare scan[2] and match[2] since they are
-         * always equal when the other bytes match, given that the hash keys
-         * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
-         * strstart+3, +5, ... up to strstart+257. We check for insufficient
-         * lookahead only every 4th comparison; the 128th check will be made
-         * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
-         * necessary to put more guard bytes at the end of the window, or
-         * to check more often for insufficient lookahead.
-         */
-        Assert(scan[2] == match[2], "scan[2]?");
-        scan++, match++;
-        do {
-        } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
-                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
-                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
-                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
-                 scan < strend);
-        /* The funny "do {}" generates better code on most compilers */
-
-        /* Here, scan <= window+strstart+257 */
-        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
-        if (*scan == *match) scan++;
-
-        len = (MAX_MATCH - 1) - (int)(strend-scan);
-        scan = strend - (MAX_MATCH-1);
-
-#else /* UNALIGNED_OK */
-
-        if (match[best_len]   != scan_end  ||
-            match[best_len-1] != scan_end1 ||
-            *match            != *scan     ||
-            *++match          != scan[1])      continue;
-
-        /* The check at best_len-1 can be removed because it will be made
-         * again later. (This heuristic is not always a win.)
-         * It is not necessary to compare scan[2] and match[2] since they
-         * are always equal when the other bytes match, given that
-         * the hash keys are equal and that HASH_BITS >= 8.
-         */
-        scan += 2, match++;
-        Assert(*scan == *match, "match[2]?");
-
-        /* We check for insufficient lookahead only every 8th comparison;
-         * the 256th check will be made at strstart+258.
-         */
-        do {
-        } while (*++scan == *++match && *++scan == *++match &&
-                 *++scan == *++match && *++scan == *++match &&
-                 *++scan == *++match && *++scan == *++match &&
-                 *++scan == *++match && *++scan == *++match &&
-                 scan < strend);
-
-        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
-
-        len = MAX_MATCH - (int)(strend - scan);
-        scan = strend - MAX_MATCH;
-
-#endif /* UNALIGNED_OK */
-
-        if (len > best_len) {
-            s->match_start = cur_match;
-            best_len = len;
-            if (len >= nice_match) break;
-#ifdef UNALIGNED_OK
-            scan_end = *(ushf*)(scan+best_len-1);
-#else
-            scan_end1  = scan[best_len-1];
-            scan_end   = scan[best_len];
-#endif
-        }
-    } while ((cur_match = prev[cur_match & wmask]) > limit
-             && --chain_length != 0);
-
-    if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
-    return s->lookahead;
-}
-
-#endif /* ASMV */
--- a/contrib/asm386/mkgvmt32.bat
+++ b/contrib/asm386/mkgvmt32.bat
@@ -1 +0,0 @@
-c:\masm611\bin\ml /coff /Zi /c /Flgvmat32.lst gvmat32.asm
--- a/contrib/asm386/zlibvc.def
+++ b/contrib/asm386/zlibvc.def
@@ -1,74 +0,0 @@
-LIBRARY		"zlib"
-
-DESCRIPTION	'"""zlib data compression library"""'
-
-
-VERSION		1.11
-
-
-HEAPSIZE	1048576,8192
-
-EXPORTS
-    adler32                        @1
-    compress                       @2
-    crc32                          @3
-    deflate                        @4
-    deflateCopy                    @5
-    deflateEnd                     @6
-    deflateInit2_                  @7
-    deflateInit_                   @8
-    deflateParams                  @9
-    deflateReset                   @10
-    deflateSetDictionary           @11
-    gzclose                        @12
-    gzdopen                        @13
-    gzerror                        @14
-    gzflush                        @15
-    gzopen                         @16
-    gzread                         @17
-    gzwrite                        @18
-    inflate                        @19
-    inflateEnd                     @20
-    inflateInit2_                  @21
-    inflateInit_                   @22
-    inflateReset                   @23
-    inflateSetDictionary           @24
-    inflateSync                    @25
-    uncompress                     @26
-    zlibVersion                    @27
-    gzprintf                       @28
-    gzputc                         @29
-    gzgetc                         @30
-    gzseek                         @31
-    gzrewind                       @32
-    gztell                         @33
-    gzeof                          @34
-    gzsetparams                    @35
-    zError                         @36
-    inflateSyncPoint               @37
-    get_crc_table                  @38
-    compress2                      @39
-    gzputs                         @40
-    gzgets                         @41
-
-	unzOpen                       @61
-	unzClose                      @62
-	unzGetGlobalInfo              @63
-	unzGetCurrentFileInfo         @64
-	unzGoToFirstFile              @65
-	unzGoToNextFile               @66
-	unzOpenCurrentFile            @67
-	unzReadCurrentFile            @68
-	unztell                       @70
-	unzeof                        @71
-	unzCloseCurrentFile           @72
-	unzGetGlobalComment           @73
-	unzStringFileNameCompare      @74
-	unzLocateFile                 @75
-	unzGetLocalExtrafield         @76
-
-	zipOpen                       @80
-	zipOpenNewFileInZip           @81
-	zipWriteInFileInZip           @82
-	zipCloseFileInZip             @83
-	zipClose                      @84
--- a/contrib/asm386/zlibvc.dsp
+++ b/contrib/asm386/zlibvc.dsp
@@ -1,651 +0,0 @@
-# Microsoft Developer Studio Project File - Name="zlibvc" - Package Owner=<4>
-# Microsoft Developer Studio Generated Build File, Format Version 5.00
-# ** DO NOT EDIT **
-
-# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
-# TARGTYPE "Win32 (ALPHA) Dynamic-Link Library" 0x0602
-
-CFG=zlibvc - Win32 Release
-!MESSAGE This is not a valid makefile. To build this project using NMAKE,
-!MESSAGE use the Export Makefile command and run
-!MESSAGE 
-!MESSAGE NMAKE /f "zlibvc.mak".
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-!MESSAGE "zlibvc - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
-!MESSAGE "zlibvc - Win32 ReleaseAxp" (based on\
- "Win32 (ALPHA) Dynamic-Link Library")
-!MESSAGE "zlibvc - Win32 ReleaseWithoutAsm" (based on\
- "Win32 (x86) Dynamic-Link Library")
-!MESSAGE "zlibvc - Win32 ReleaseWithoutCrtdll" (based on\
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-!MESSAGE 
-
-# Begin Project
-# PROP Scc_ProjName ""
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-
-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
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-DEP_CPP_CRC32=\
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutCrtdll"
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-!ENDIF 
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-# End Source File
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-SOURCE=.\deflate.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-DEP_CPP_DEFLA=\
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-	".\zconf.h"\
-	".\zlib.h"\
-	".\zutil.h"\
-	
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutCrtdll"
-
-!ENDIF 
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-# End Source File
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-SOURCE=.\gvmat32c.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutCrtdll"
-
-!ENDIF 
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-# End Source File
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-SOURCE=.\gzio.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-DEP_CPP_GZIO_=\
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutCrtdll"
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-!ENDIF 
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-# End Source File
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-SOURCE=.\infblock.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-DEP_CPP_INFBL=\
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-	".\zutil.h"\
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-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-!ENDIF 
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-# End Source File
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-DEP_CPP_INFCO=\
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-!ENDIF 
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-SOURCE=.\inffast.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-DEP_CPP_INFFA=\
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-DEP_CPP_INFLA=\
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-DEP_CPP_INFTR=\
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-
-DEP_CPP_INFUT=\
-	".\infblock.h"\
-	".\infcodes.h"\
-	".\inftrees.h"\
-	".\infutil.h"\
-	".\zconf.h"\
-	".\zlib.h"\
-	".\zutil.h"\
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-SOURCE=.\trees.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-DEP_CPP_TREES=\
-	".\deflate.h"\
-	".\zconf.h"\
-	".\zlib.h"\
-	".\zutil.h"\
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-SOURCE=.\uncompr.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-DEP_CPP_UNCOM=\
-	".\zconf.h"\
-	".\zlib.h"\
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-SOURCE=.\unzip.c
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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-!IF  "$(CFG)" == "zlibvc - Win32 Release"
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 Debug"
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseAxp"
-
-DEP_CPP_ZUTIL=\
-	".\zconf.h"\
-	".\zlib.h"\
-	".\zutil.h"\
-	
-
-!ELSEIF  "$(CFG)" == "zlibvc - Win32 ReleaseWithoutAsm"
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--- a/contrib/asm386/zlibvc.dsw
+++ b/contrib/asm386/zlibvc.dsw
@@ -1,41 +0,0 @@
-Microsoft Developer Studio Workspace File, Format Version 5.00
-# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
-
-###############################################################################
-
-Project: "zlibstat"=.\zlibstat.dsp - Package Owner=<4>
-
-Package=<5>
-{{{
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-
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-{{{
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-Project: "zlibvc"=.\zlibvc.dsp - Package Owner=<4>
-
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-
--- a/contrib/blast/blast.c
+++ b/contrib/blast/blast.c
@@ -20,36 +20,36 @@
 /*
 * Change history:
 *
- * 1.0	12 Feb 2003	- First version
- * 1.1	16 Feb 2003	- Fixed distance check for > 4 GB uncompressed data
+ * 1.0  12 Feb 2003     - First version
+ * 1.1  16 Feb 2003     - Fixed distance check for > 4 GB uncompressed data
 */

-#include <setjmp.h>		/* for setjmp(), longjmp(), and jmp_buf */
-#include "blast.h"		/* prototype for blast() */
+#include <setjmp.h>             /* for setjmp(), longjmp(), and jmp_buf */
+#include "blast.h"              /* prototype for blast() */

-#define local static		/* for local function definitions */
-#define MAXBITS 13		/* maximum code length */
-#define MAXWIN 4096		/* maximum window size */
+#define local static            /* for local function definitions */
+#define MAXBITS 13              /* maximum code length */
+#define MAXWIN 4096             /* maximum window size */

 /* input and output state */
 struct state {
    /* input state */
-    blast_in infun;		/* input function provided by user */
-    void *inhow;		/* opaque information passed to infun() */
-    unsigned char *in;		/* next input location */
-    unsigned left;		/* available input at in */
-    int bitbuf;			/* bit buffer */
-    int bitcnt;			/* number of bits in bit buffer */
+    blast_in infun;             /* input function provided by user */
+    void *inhow;                /* opaque information passed to infun() */
+    unsigned char *in;          /* next input location */
+    unsigned left;              /* available input at in */
+    int bitbuf;                 /* bit buffer */
+    int bitcnt;                 /* number of bits in bit buffer */

    /* input limit error return state for bits() and decode() */
    jmp_buf env;

    /* output state */
-    blast_out outfun;		/* output function provided by user */
-    void *outhow;		/* opaque information passed to outfun() */
-    unsigned next;		/* index of next write location in out[] */
-    int first;			/* true to check distances (for first 4K) */
-    unsigned char out[MAXWIN];	/* output buffer and sliding window */
+    blast_out outfun;           /* output function provided by user */
+    void *outhow;               /* opaque information passed to outfun() */
+    unsigned next;              /* index of next write location in out[] */
+    int first;                  /* true to check distances (for first 4K) */
+    unsigned char out[MAXWIN];  /* output buffer and sliding window */
 };

 /*
@@ -65,16 +65,16 @@ struct state {
 */
 local int bits(struct state *s, int need)
 {
-    int val;		/* bit accumulator */
+    int val;            /* bit accumulator */

    /* load at least need bits into val */
    val = s->bitbuf;
    while (s->bitcnt < need) {
        if (s->left == 0) {
            s->left = s->infun(s->inhow, &(s->in));
-            if (s->left == 0) longjmp(s->env, 1);	/* out of input */
+            if (s->left == 0) longjmp(s->env, 1);       /* out of input */
        }
-        val |= (int)(*(s->in)++) << s->bitcnt;		/* load eight bits */
+        val |= (int)(*(s->in)++) << s->bitcnt;          /* load eight bits */
        s->left--;
        s->bitcnt += 8;
    }
@@ -95,8 +95,8 @@ local int bits(struct state *s, int need)
 * seen in the function decode() below.
 */
 struct huffman {
-    short *count;	/* number of symbols of each length */
-    short *symbol;	/* canonically ordered symbols */
+    short *count;       /* number of symbols of each length */
+    short *symbol;      /* canonically ordered symbols */
 };

 /*
@@ -122,14 +122,14 @@ struct huffman {
 */
 local int decode(struct state *s, struct huffman *h)
 {
-    int len;		/* current number of bits in code */
-    int code;		/* len bits being decoded */
-    int first;		/* first code of length len */
-    int count;		/* number of codes of length len */
-    int index;		/* index of first code of length len in symbol table */
-    int bitbuf;		/* bits from stream */
-    int left;		/* bits left in next or left to process */
-    short *next;	/* next number of codes */
+    int len;            /* current number of bits in code */
+    int code;           /* len bits being decoded */
+    int first;          /* first code of length len */
+    int count;          /* number of codes of length len */
+    int index;          /* index of first code of length len in symbol table */
+    int bitbuf;         /* bits from stream */
+    int left;           /* bits left in next or left to process */
+    short *next;        /* next number of codes */

    bitbuf = s->bitbuf;
    left = s->bitcnt;
@@ -138,15 +138,15 @@ local int decode(struct state *s, struct huffman *h)
    next = h->count + 1;
    while (1) {
        while (left--) {
-            code |= (bitbuf & 1) ^ 1;	/* invert code */
+            code |= (bitbuf & 1) ^ 1;   /* invert code */
            bitbuf >>= 1;
            count = *next++;
-            if (code < first + count) {	/* if length len, return symbol */
+            if (code < first + count) { /* if length len, return symbol */
                s->bitbuf = bitbuf;
                s->bitcnt = (s->bitcnt - len) & 7;
                return h->symbol[index + (code - first)];
            }
-            index += count;		/* else update for next length */
+            index += count;             /* else update for next length */
            first += count;
            first <<= 1;
            code <<= 1;
@@ -156,13 +156,13 @@ local int decode(struct state *s, struct huffman *h)
        if (left == 0) break;
        if (s->left == 0) {
            s->left = s->infun(s->inhow, &(s->in));
-            if (s->left == 0) longjmp(s->env, 1);	/* out of input */
+            if (s->left == 0) longjmp(s->env, 1);       /* out of input */
        }
        bitbuf = *(s->in)++;
        s->left--;
        if (left > 8) left = 8;
    }
-    return -9;				/* ran out of codes */
+    return -9;                          /* ran out of codes */
 }

 /*
@@ -184,11 +184,11 @@ local int decode(struct state *s, struct huffman *h)
 */
 local int construct(struct huffman *h, const unsigned char *rep, int n)
 {
-    int symbol;		/* current symbol when stepping through length[] */
-    int len;		/* current length when stepping through h->count[] */
-    int left;		/* number of possible codes left of current length */
-    short offs[MAXBITS+1];	/* offsets in symbol table for each length */
-    short length[256];	/* code lengths */
+    int symbol;         /* current symbol when stepping through length[] */
+    int len;            /* current length when stepping through h->count[] */
+    int left;           /* number of possible codes left of current length */
+    short offs[MAXBITS+1];      /* offsets in symbol table for each length */
+    short length[256];  /* code lengths */

    /* convert compact repeat counts into symbol bit length list */
    symbol = 0;
@@ -206,17 +206,17 @@ local int construct(struct huffman *h, const unsigned char *rep, int n)
    for (len = 0; len <= MAXBITS; len++)
        h->count[len] = 0;
    for (symbol = 0; symbol < n; symbol++)
-        (h->count[length[symbol]])++;	/* assumes lengths are within bounds */
-    if (h->count[0] == n)		/* no codes! */
-        return 0;			/* complete, but decode() will fail */
+        (h->count[length[symbol]])++;   /* assumes lengths are within bounds */
+    if (h->count[0] == n)               /* no codes! */
+        return 0;                       /* complete, but decode() will fail */

    /* check for an over-subscribed or incomplete set of lengths */
-    left = 1;				/* one possible code of zero length */
+    left = 1;                           /* one possible code of zero length */
    for (len = 1; len <= MAXBITS; len++) {
-        left <<= 1;			/* one more bit, double codes left */
-        left -= h->count[len];		/* deduct count from possible codes */
-        if (left < 0) return left;	/* over-subscribed--return negative */
-    }					/* left > 0 means incomplete */
+        left <<= 1;                     /* one more bit, double codes left */
+        left -= h->count[len];          /* deduct count from possible codes */
+        if (left < 0) return left;      /* over-subscribed--return negative */
+    }                                   /* left > 0 means incomplete */

    /* generate offsets into symbol table for each length for sorting */
    offs[1] = 0;
@@ -275,35 +275,35 @@ local int construct(struct huffman *h, const unsigned char *rep, int n)
 */
 local int decomp(struct state *s)
 {
-    int lit;		/* true if literals are coded */
-    int dict;		/* log2(dictionary size) - 6 */
-    int symbol;		/* decoded symbol, extra bits for distance */
-    int len;		/* length for copy */
-    int dist;		/* distance for copy */
-    int copy;		/* copy counter */
-    unsigned char *from, *to;	/* copy pointers */
-    static int virgin = 1;				/* build tables once */
-    static short litcnt[MAXBITS+1], litsym[256];	/* litcode memory */
-    static short lencnt[MAXBITS+1], lensym[16];		/* lencode memory */
-    static short distcnt[MAXBITS+1], distsym[64];	/* distcode memory */
-    static struct huffman litcode = {litcnt, litsym};	/* length code */
-    static struct huffman lencode = {lencnt, lensym};	/* length code */
+    int lit;            /* true if literals are coded */
+    int dict;           /* log2(dictionary size) - 6 */
+    int symbol;         /* decoded symbol, extra bits for distance */
+    int len;            /* length for copy */
+    int dist;           /* distance for copy */
+    int copy;           /* copy counter */
+    unsigned char *from, *to;   /* copy pointers */
+    static int virgin = 1;                              /* build tables once */
+    static short litcnt[MAXBITS+1], litsym[256];        /* litcode memory */
+    static short lencnt[MAXBITS+1], lensym[16];         /* lencode memory */
+    static short distcnt[MAXBITS+1], distsym[64];       /* distcode memory */
+    static struct huffman litcode = {litcnt, litsym};   /* length code */
+    static struct huffman lencode = {lencnt, lensym};   /* length code */
    static struct huffman distcode = {distcnt, distsym};/* distance code */
        /* bit lengths of literal codes */
    static const unsigned char litlen[] = {
-	11, 124, 8, 7, 28, 7, 188, 13, 76, 4, 10, 8, 12, 10, 12, 10, 8, 23, 8,
-	9, 7, 6, 7, 8, 7, 6, 55, 8, 23, 24, 12, 11, 7, 9, 11, 12, 6, 7, 22, 5,
-	7, 24, 6, 11, 9, 6, 7, 22, 7, 11, 38, 7, 9, 8, 25, 11, 8, 11, 9, 12,
-	8, 12, 5, 38, 5, 38, 5, 11, 7, 5, 6, 21, 6, 10, 53, 8, 7, 24, 10, 27,
-	44, 253, 253, 253, 252, 252, 252, 13, 12, 45, 12, 45, 12, 61, 12, 45,
-	44, 173};
+        11, 124, 8, 7, 28, 7, 188, 13, 76, 4, 10, 8, 12, 10, 12, 10, 8, 23, 8,
+        9, 7, 6, 7, 8, 7, 6, 55, 8, 23, 24, 12, 11, 7, 9, 11, 12, 6, 7, 22, 5,
+        7, 24, 6, 11, 9, 6, 7, 22, 7, 11, 38, 7, 9, 8, 25, 11, 8, 11, 9, 12,
+        8, 12, 5, 38, 5, 38, 5, 11, 7, 5, 6, 21, 6, 10, 53, 8, 7, 24, 10, 27,
+        44, 253, 253, 253, 252, 252, 252, 13, 12, 45, 12, 45, 12, 61, 12, 45,
+        44, 173};
        /* bit lengths of length codes 0..15 */
    static const unsigned char lenlen[] = {2, 35, 36, 53, 38, 23};
        /* bit lengths of distance codes 0..63 */
    static const unsigned char distlen[] = {2, 20, 53, 230, 247, 151, 248};
-    static const short base[16] = {	/* base for length codes */
+    static const short base[16] = {     /* base for length codes */
        3, 2, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 40, 72, 136, 264};
-    static const char extra[16] = {	/* extra bits for length codes */
+    static const char extra[16] = {     /* extra bits for length codes */
        0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8};

    /* set up decoding tables (once--might not be thread-safe) */
@@ -326,7 +326,7 @@ local int decomp(struct state *s)
            /* get length */
            symbol = decode(s, &lencode);
            len = base[symbol] + bits(s, extra[symbol]);
-            if (len == 519) break;		/* end code */
+            if (len == 519) break;              /* end code */

            /* get distance */
            symbol = len == 2 ? 2 : dict;
@@ -334,7 +334,7 @@ local int decomp(struct state *s)
            dist += bits(s, symbol);
            dist++;
            if (s->first && dist > s->next)
-                return -3;		/* distance too far back */
+                return -3;              /* distance too far back */

            /* copy length bytes from distance bytes back */
            do {
@@ -376,8 +376,8 @@ local int decomp(struct state *s)
 /* See comments in blast.h */
 int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow)
 {
-    struct state s;		/* input/output state */
-    int err;			/* return value */
+    struct state s;             /* input/output state */
+    int err;                    /* return value */

    /* initialize input state */
    s.infun = infun;
@@ -393,10 +393,10 @@ int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow)
    s.first = 1;

    /* return if bits() or decode() tries to read past available input */
-    if (setjmp(s.env) != 0)		/* if came back here via longjmp(), */
-        err = 2;			/*  then skip decomp(), return error */
+    if (setjmp(s.env) != 0)             /* if came back here via longjmp(), */
+        err = 2;                        /*  then skip decomp(), return error */
    else
-        err = decomp(&s);		/* decompress */
+        err = decomp(&s);               /* decompress */

    /* write any leftover output and update the error code if needed */
    if (err != 1 && s.next && s.outfun(s.outhow, s.out, s.next) && err == 0)
--- a/contrib/blast/blast.h
+++ b/contrib/blast/blast.h
@@ -18,7 +18,7 @@
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

-  Mark Adler	madler@alumni.caltech.edu
+  Mark Adler    madler@alumni.caltech.edu
 */


--- a/contrib/delphi2/zlib.pas
+++ b/contrib/delphi2/zlib.pas
@@ -1,33 +1,33 @@
 {*******************************************************}
 {                                                       }
-{       Delphi Supplemental Components                  }
+{       Borland Delphi Supplemental Components          }
 {       ZLIB Data Compression Interface Unit            }
 {                                                       }
-{       Copyright (c) 1997 Borland International        }
+{       Copyright (c) 1997,99 Borland Corporation       }
 {                                                       }
 {*******************************************************}

-{ Modified for zlib 1.1.3 by Davide Moretti <dave@rimini.com }
+{ Updated for zlib 1.2.x by Cosmin Truta <cosmint@cs.ubbcluj.ro> }

-unit zlib;
+unit ZLib;

 interface

-uses Sysutils, Classes;
+uses SysUtils, Classes;

 type
-  TAlloc = function (AppData: Pointer; Items, Size: Integer): Pointer;
-  TFree = procedure (AppData, Block: Pointer);
+  TAlloc = function (AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
+  TFree = procedure (AppData, Block: Pointer); cdecl;

  // Internal structure.  Ignore.
  TZStreamRec = packed record
    next_in: PChar;       // next input byte
    avail_in: Integer;    // number of bytes available at next_in
-    total_in: Integer;    // total nb of input bytes read so far
+    total_in: Longint;    // total nb of input bytes read so far

    next_out: PChar;      // next output byte should be put here
    avail_out: Integer;   // remaining free space at next_out
-    total_out: Integer;   // total nb of bytes output so far
+    total_out: Longint;   // total nb of bytes output so far

    msg: PChar;           // last error message, NULL if no error
    internal: Pointer;    // not visible by applications
@@ -36,9 +36,9 @@ type
    zfree: TFree;         // used to free the internal state
    AppData: Pointer;     // private data object passed to zalloc and zfree

-    data_type: Integer;   //  best guess about the data type: ascii or binary
-    adler: Integer;       // adler32 value of the uncompressed data
-    reserved: Integer;    // reserved for future use
+    data_type: Integer;   // best guess about the data type: ascii or binary
+    adler: Longint;       // adler32 value of the uncompressed data
+    reserved: Longint;    // reserved for future use
  end;

  // Abstract ancestor class
@@ -143,18 +143,26 @@ procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
 procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
 OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);

+{ DecompressToUserBuf decompresses data, buffer to buffer, in one call.
+   In: InBuf = ptr to compressed data
+       InBytes = number of bytes in InBuf
+  Out: OutBuf = ptr to user-allocated buffer to contain decompressed data
+       BufSize = number of bytes in OutBuf   }
+procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
+  const OutBuf: Pointer; BufSize: Integer);
+
 const
-  zlib_version = '1.1.3';
+  zlib_version = '1.2.1';

 type
  EZlibError = class(Exception);
  ECompressionError = class(EZlibError);
  EDecompressionError = class(EZlibError);

-function adler32(adler: Integer; buf: PChar; len: Integer): Integer;
-
 implementation

+uses ZLibConst;
+
 const
  Z_NO_FLUSH      = 0;
  Z_PARTIAL_FLUSH = 1;
@@ -179,6 +187,7 @@ const

  Z_FILTERED            = 1;
  Z_HUFFMAN_ONLY        = 2;
+  Z_RLE                 = 3;
  Z_DEFAULT_STRATEGY    = 0;

  Z_BINARY   = 0;
@@ -187,56 +196,41 @@ const

  Z_DEFLATED = 8;

-  _z_errmsg: array[0..9] of PChar = (
-    'need dictionary',      // Z_NEED_DICT      (2)
-    'stream end',           // Z_STREAM_END     (1)
-    '',                     // Z_OK             (0)
-    'file error',           // Z_ERRNO          (-1)
-    'stream error',         // Z_STREAM_ERROR   (-2)
-    'data error',           // Z_DATA_ERROR     (-3)
-    'insufficient memory',  // Z_MEM_ERROR      (-4)
-    'buffer error',         // Z_BUF_ERROR      (-5)
-    'incompatible version', // Z_VERSION_ERROR  (-6)
-    ''
-  );

+{$L adler32.obj}
+{$L compress.obj}
+{$L crc32.obj}
 {$L deflate.obj}
+{$L infback.obj}
+{$L inffast.obj}
 {$L inflate.obj}
 {$L inftrees.obj}
 {$L trees.obj}
-{$L adler32.obj}
-{$L infblock.obj}
-{$L infcodes.obj}
-{$L infutil.obj}
-{$L inffast.obj}
+{$L uncompr.obj}
+{$L zutil.obj}

-procedure _tr_init; external;
-procedure _tr_tally; external;
-procedure _tr_flush_block; external;
-procedure _tr_align; external;
-procedure _tr_stored_block; external;
-function adler32; external;
-procedure inflate_blocks_new; external;
-procedure inflate_blocks; external;
-procedure inflate_blocks_reset; external;
-procedure inflate_blocks_free; external;
-procedure inflate_set_dictionary; external;
-procedure inflate_trees_bits; external;
-procedure inflate_trees_dynamic; external;
-procedure inflate_trees_fixed; external;
-procedure inflate_codes_new; external;
-procedure inflate_codes; external;
-procedure inflate_codes_free; external;
-procedure _inflate_mask; external;
-procedure inflate_flush; external;
-procedure inflate_fast; external;
+procedure adler32; external;
+procedure compressBound; external;
+procedure crc32; external;
+procedure deflateInit2_; external;
+procedure deflateParams; external;

-procedure _memset(P: Pointer; B: Byte; count: Integer);cdecl;
+function _malloc(Size: Integer): Pointer; cdecl;
+begin
+  Result := AllocMem(Size);
+end;
+
+procedure _free(Block: Pointer); cdecl;
+begin
+  FreeMem(Block);
+end;
+
+procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
 begin
  FillChar(P^, count, B);
 end;

-procedure _memcpy(dest, source: Pointer; count: Integer);cdecl;
+procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
 begin
  Move(source^, dest^, count);
 end;
@@ -257,22 +251,23 @@ function inflateEnd(var strm: TZStreamRec): Integer; external;
 function inflateReset(var strm: TZStreamRec): Integer; external;


-function zcalloc(AppData: Pointer; Items, Size: Integer): Pointer;
+function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
 begin
-  GetMem(Result, Items*Size);
+//  GetMem(Result, Items*Size);
+  Result := AllocMem(Items * Size);
 end;

-procedure zcfree(AppData, Block: Pointer);
+procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
 begin
  FreeMem(Block);
 end;

-function zlibCheck(code: Integer): Integer;
+{function zlibCheck(code: Integer): Integer;
 begin
  Result := code;
  if code < 0 then
    raise EZlibError.Create('error');    //!!
-end;
+end;}

 function CCheck(code: Integer): Integer;
 begin
@@ -295,6 +290,8 @@ var
  P: Pointer;
 begin
  FillChar(strm, sizeof(strm), 0);
+  strm.zalloc := zlibAllocMem;
+  strm.zfree := zlibFreeMem;
  OutBytes := ((InBytes + (InBytes div 10) + 12) + 255) and not 255;
  GetMem(OutBuf, OutBytes);
  try
@@ -332,6 +329,8 @@ var
  BufInc: Integer;
 begin
  FillChar(strm, sizeof(strm), 0);
+  strm.zalloc := zlibAllocMem;
+  strm.zfree := zlibFreeMem;
  BufInc := (InBytes + 255) and not 255;
  if OutEstimate = 0 then
    OutBytes := BufInc
@@ -364,6 +363,26 @@ begin
  end;
 end;

+procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
+  const OutBuf: Pointer; BufSize: Integer);
+var
+  strm: TZStreamRec;
+begin
+  FillChar(strm, sizeof(strm), 0);
+  strm.zalloc := zlibAllocMem;
+  strm.zfree := zlibFreeMem;
+  strm.next_in := InBuf;
+  strm.avail_in := InBytes;
+  strm.next_out := OutBuf;
+  strm.avail_out := BufSize;
+  DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
+  try
+    if DCheck(inflate(strm, Z_FINISH)) <> Z_STREAM_END then
+      raise EZlibError.CreateRes(@sTargetBufferTooSmall);
+  finally
+    DCheck(inflateEnd(strm));
+  end;
+end;

 // TCustomZlibStream

@@ -372,6 +391,8 @@ begin
  inherited Create;
  FStrm := Strm;
  FStrmPos := Strm.Position;
+  FZRec.zalloc := zlibAllocMem;
+  FZRec.zfree := zlibFreeMem;
 end;

 procedure TCustomZLibStream.Progress(Sender: TObject);
@@ -417,7 +438,7 @@ end;

 function TCompressionStream.Read(var Buffer; Count: Longint): Longint;
 begin
-  raise ECompressionError.Create('Invalid stream operation');
+  raise ECompressionError.CreateRes(@sInvalidStreamOp);
 end;

 function TCompressionStream.Write(const Buffer; Count: Longint): Longint;
@@ -445,7 +466,7 @@ begin
  if (Offset = 0) and (Origin = soFromCurrent) then
    Result := FZRec.total_in
  else
-    raise ECompressionError.Create('Invalid stream operation');
+    raise ECompressionError.CreateRes(@sInvalidStreamOp);
 end;

 function TCompressionStream.GetCompressionRate: Single;
@@ -469,6 +490,7 @@ end;

 destructor TDecompressionStream.Destroy;
 begin
+  FStrm.Seek(-FZRec.avail_in, 1);
  inflateEnd(FZRec);
  inherited Destroy;
 end;
@@ -484,22 +506,22 @@ begin
    begin
      FZRec.avail_in := FStrm.Read(FBuffer, sizeof(FBuffer));
      if FZRec.avail_in = 0 then
-        begin
-          Result := Count - FZRec.avail_out;
-          Exit;
-        end;
-      FZRec.next_in := FBuffer;
+      begin
+        Result := Count - FZRec.avail_out;
+        Exit;
+      end;
+          FZRec.next_in := FBuffer;
      FStrmPos := FStrm.Position;
      Progress(Self);
    end;
-    DCheck(inflate(FZRec, 0));
+    CCheck(inflate(FZRec, 0));
  end;
  Result := Count;
 end;

 function TDecompressionStream.Write(const Buffer; Count: Longint): Longint;
 begin
-  raise EDecompressionError.Create('Invalid stream operation');
+  raise EDecompressionError.CreateRes(@sInvalidStreamOp);
 end;

 function TDecompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
@@ -527,8 +549,9 @@ begin
    end;
  end
  else
-    raise EDecompressionError.Create('Invalid stream operation');
+    raise EDecompressionError.CreateRes(@sInvalidStreamOp);
  Result := FZRec.total_out;
 end;

+
 end.
--- a/contrib/delphi/ZLibConst.pas
+++ b/contrib/delphi/ZLibConst.pas
@@ -0,0 +1,11 @@
+unit ZLibConst;
+
+interface
+
+resourcestring
+  sTargetBufferTooSmall = 'ZLib error: target buffer may be too small';
+  sInvalidStreamOp = 'Invalid stream operation';
+
+implementation
+
+end.
--- a/contrib/delphi/readme.txt
+++ b/contrib/delphi/readme.txt
@@ -0,0 +1,76 @@
+
+Overview
+========
+
+This directory contains an update to the ZLib interface unit,
+distributed by Borland as a Delphi supplemental component.
+
+The original ZLib unit is Copyright (c) 1997,99 Borland Corp.,
+and is based on zlib version 1.0.4.  There are a series of bugs
+and security problems associated with that old zlib version, and
+we recommend the users to update their ZLib unit.
+
+
+Summary of modifications
+========================
+
+- Improved makefile, adapted to zlib version 1.2.1.
+
+- Some field types from TZStreamRec are changed from Integer to
+  Longint, for consistency with the zlib.h header, and for 64-bit
+  readiness.
+
+- The zlib_version constant is updated.
+
+- The new Z_RLE strategy has its corresponding symbolic constant.
+
+- The allocation and deallocation functions and function types
+  (TAlloc, TFree, zlibAllocMem and zlibFreeMem) are now cdecl,
+  and _malloc and _free are added as C RTL stubs.  As a result,
+  the original C sources of zlib can be compiled out of the box,
+  and linked to the ZLib unit.
+
+
+Suggestions for improvements
+============================
+
+Currently, the ZLib unit provides only a limited wrapper around
+the zlib library, and much of the original zlib functionality is
+missing.  Handling compressed file formats like ZIP/GZIP or PNG
+cannot be implemented without having this functionality.
+Applications that handle these formats are either using their own,
+duplicated code, or not using the ZLib unit at all.
+
+Here are a few suggestions:
+
+- Checksum class wrappers around adler32() and crc32(), similar
+  to the Java classes that implement the java.util.zip.Checksum
+  interface.
+
+- The ability to read and write raw deflate streams, without the
+  zlib stream header and trailer.  Raw deflate streams are used
+  in the ZIP file format.
+
+- The ability to read and write gzip streams, used in the GZIP
+  file format, and normally produced by the gzip program.
+
+- The ability to select a different compression strategy, useful
+  to PNG and MNG image compression, and to multimedia compression
+  in general.  Besides the compression level
+
+    TCompressionLevel = (clNone, clFastest, clDefault, clMax);
+
+  which, in fact, could have used the 'z' prefix and avoided
+  TColor-like symbols
+
+    TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax);
+
+  there could be a compression strategy
+
+    TCompressionStrategy = (zsDefault, zsFiltered, zsHuffmanOnly, zsRle);
+
+- ZIP and GZIP stream handling via TStreams.
+
+
+--
+Cosmin Truta <cosmint@cs.ubbcluj.ro>
--- a/contrib/delphi/zlib.mak
+++ b/contrib/delphi/zlib.mak
@@ -1,36 +0,0 @@
-# Makefile for zlib32bd.lib
-# ------------- Borland C++ 4.5 -------------
-
-# The (32-bit) zlib32bd.lib made with this makefile is intended for use 
-# in making the (32-bit) DLL, png32bd.dll. It uses the "stdcall" calling 
-# convention.
-
-CFLAGS= -ps -O2 -C -K -N- -k- -d -3 -r- -w-par -w-aus -WDE
-CC=f:\bc45\bin\bcc32
-LIBFLAGS= /C
-LIB=f:\bc45\bin\tlib
-ZLIB=zlib32bd.lib
-
-.autodepend
-.c.obj:
-        $(CC) -c $(CFLAGS) $<
-
-OBJ1=adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infblock.obj 
-OBJ2=infcodes.obj inflate.obj inftrees.obj infutil.obj inffast.obj 
-OBJ3=trees.obj uncompr.obj zutil.obj
-pOBJ1=+adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infblock.obj 
-pOBJ2=+infcodes.obj+inflate.obj+inftrees.obj+infutil.obj+inffast.obj 
-pOBJ3=+trees.obj+uncompr.obj+zutil.obj
-
-all: $(ZLIB)
-
-$(ZLIB): $(OBJ1) $(OBJ2) $(OBJ3)
-        @if exist $@ del $@
-        $(LIB) @&&|
-$@ $(LIBFLAGS) &
-$(pOBJ1) &
-$(pOBJ2) &
-$(pOBJ3)
-|
-
-# End of makefile for zlib32bd.lib
--- a/contrib/delphi/zlibd32.mak
+++ b/contrib/delphi/zlibd32.mak
@@ -0,0 +1,93 @@
+# Makefile for zlib
+# For use with Delphi and C++ Builder under Win32
+# Updated for zlib 1.2.x by Cosmin Truta
+
+# ------------ Borland C++ ------------
+
+# This project uses the Delphi (fastcall/register) calling convention:
+LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl
+
+CC = bcc32
+LD = bcc32
+AR = tlib
+# do not use "-pr" in CFLAGS
+CFLAGS = -a -d -k- -O2 $(LOC)
+LDFLAGS =
+
+
+# variables
+ZLIB_LIB = zlib.lib
+
+OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
+OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
+OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infback.obj
+OBJP2 = +inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
+
+
+# targets
+all: $(ZLIB_LIB) example.exe minigzip.exe
+
+.c.obj:
+	$(CC) -c $(CFLAGS) $*.c
+
+adler32.obj: adler32.c zlib.h zconf.h
+
+compress.obj: compress.c zlib.h zconf.h
+
+crc32.obj: crc32.c zlib.h zconf.h crc32.h
+
+deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
+
+gzio.obj: gzio.c zutil.h zlib.h zconf.h
+
+infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h inffixed.h
+
+inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h
+
+inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h inffixed.h
+
+inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
+
+trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
+
+uncompr.obj: uncompr.c zlib.h zconf.h
+
+zutil.obj: zutil.c zutil.h zlib.h zconf.h
+
+example.obj: example.c zlib.h zconf.h
+
+minigzip.obj: minigzip.c zlib.h zconf.h
+
+
+# For the sake of the old Borland make,
+# the command line is cut to fit in the MS-DOS 128 byte limit:
+$(ZLIB_LIB): $(OBJ1) $(OBJ2)
+	-del $(ZLIB_LIB)
+	$(AR) $(ZLIB_LIB) $(OBJP1)
+	$(AR) $(ZLIB_LIB) $(OBJP2)
+
+
+# testing
+test: example.exe minigzip.exe
+	example
+	echo hello world | minigzip | minigzip -d
+
+example.exe: example.obj $(ZLIB_LIB)
+	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
+
+minigzip.exe: minigzip.obj $(ZLIB_LIB)
+	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
+
+
+# cleanup
+clean:
+	-del *.obj
+	-del *.exe
+	-del *.lib
+	-del *.tds
+	-del zlib.bak
+	-del foo.gz
+
--- a/contrib/delphi/zlibdef.pas
+++ b/contrib/delphi/zlibdef.pas
@@ -1,169 +0,0 @@
-unit zlibdef;
-
-interface
-
-uses
-  Windows;
-
-const
-  ZLIB_VERSION = '1.1.3';
-
-type
-  voidpf = Pointer;
-  int    = Integer;
-  uInt   = Cardinal;
-  pBytef = PChar;
-  uLong  = Cardinal;
-
-  alloc_func = function(opaque: voidpf; items, size: uInt): voidpf;
-                    stdcall;
-  free_func  = procedure(opaque, address: voidpf);
-                    stdcall;
-
-  internal_state = Pointer;
-
-  z_streamp = ^z_stream;
-  z_stream = packed record
-    next_in: pBytef;          // next input byte
-    avail_in: uInt;           // number of bytes available at next_in
-    total_in: uLong;          // total nb of input bytes read so far
-
-    next_out: pBytef;         // next output byte should be put there
-    avail_out: uInt;          // remaining free space at next_out
-    total_out: uLong;         // total nb of bytes output so far
-
-    msg: PChar;               // last error message, NULL if no error
-    state: internal_state;    // not visible by applications
-
-    zalloc: alloc_func;       // used to allocate the internal state
-    zfree: free_func;         // used to free the internal state
-    opaque: voidpf;           // private data object passed to zalloc and zfree
-
-    data_type: int;           // best guess about the data type: ascii or binary
-    adler: uLong;             // adler32 value of the uncompressed data
-    reserved: uLong;          // reserved for future use
-    end;
-
-const
-  Z_NO_FLUSH      = 0;
-  Z_SYNC_FLUSH    = 2;
-  Z_FULL_FLUSH    = 3;
-  Z_FINISH        = 4;
-
-  Z_OK            = 0;
-  Z_STREAM_END    = 1;
-
-  Z_NO_COMPRESSION         =  0;
-  Z_BEST_SPEED             =  1;
-  Z_BEST_COMPRESSION       =  9;
-  Z_DEFAULT_COMPRESSION    = -1;
-
-  Z_FILTERED            = 1;
-  Z_HUFFMAN_ONLY        = 2;
-  Z_DEFAULT_STRATEGY    = 0;
-
-  Z_BINARY   = 0;
-  Z_ASCII    = 1;
-  Z_UNKNOWN  = 2;
-
-  Z_DEFLATED    = 8;
-
-  MAX_MEM_LEVEL = 9;
-
-function adler32(adler: uLong; const buf: pBytef; len: uInt): uLong;
-             stdcall;
-function crc32(crc: uLong; const buf: pBytef; len: uInt): uLong;
-             stdcall;
-function deflate(strm: z_streamp; flush: int): int;
-             stdcall;
-function deflateCopy(dest, source: z_streamp): int;
-             stdcall;
-function deflateEnd(strm: z_streamp): int;
-             stdcall;
-function deflateInit2_(strm: z_streamp; level, method,
-                       windowBits, memLevel, strategy: int;
-                       const version: PChar; stream_size: int): int;
-             stdcall;
-function deflateInit_(strm: z_streamp; level: int;
-                      const version: PChar; stream_size: int): int;
-             stdcall;
-function deflateParams(strm: z_streamp; level, strategy: int): int;
-             stdcall;
-function deflateReset(strm: z_streamp): int;
-             stdcall;
-function deflateSetDictionary(strm: z_streamp;
-                              const dictionary: pBytef;
-                              dictLength: uInt): int;
-             stdcall;
-function inflate(strm: z_streamp; flush: int): int;
-             stdcall;
-function inflateEnd(strm: z_streamp): int;
-             stdcall;
-function inflateInit2_(strm: z_streamp; windowBits: int;
-                       const version: PChar; stream_size: int): int;
-             stdcall;
-function inflateInit_(strm: z_streamp; const version: PChar;
-                      stream_size: int): int;
-             stdcall;
-function inflateReset(strm: z_streamp): int;
-             stdcall;
-function inflateSetDictionary(strm: z_streamp;
-                              const dictionary: pBytef;
-                              dictLength: uInt): int;
-             stdcall;
-function inflateSync(strm: z_streamp): int;
-             stdcall;
-
-function deflateInit(strm: z_streamp; level: int): int;
-function deflateInit2(strm: z_streamp; level, method, windowBits,
-                      memLevel, strategy: int): int;
-function inflateInit(strm: z_streamp): int;
-function inflateInit2(strm: z_streamp; windowBits: int): int;
-
-implementation
-
-function deflateInit(strm: z_streamp; level: int): int;
-begin
-  Result := deflateInit_(strm, level, ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function deflateInit2(strm: z_streamp; level, method, windowBits,
-                      memLevel, strategy: int): int;
-begin
-  Result := deflateInit2_(strm, level, method, windowBits, memLevel,
-                          strategy, ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function inflateInit(strm: z_streamp): int;
-begin
-  Result := inflateInit_(strm, ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function inflateInit2(strm: z_streamp; windowBits: int): int;
-begin
-  Result := inflateInit2_(strm, windowBits, ZLIB_VERSION,
-                          sizeof(z_stream));
-end;
-
-const
-  zlibDLL = 'png32bd.dll';
-
-function adler32; external zlibDLL;
-function crc32; external zlibDLL;
-function deflate; external zlibDLL;
-function deflateCopy; external zlibDLL;
-function deflateEnd; external zlibDLL;
-function deflateInit2_; external zlibDLL;
-function deflateInit_; external zlibDLL;
-function deflateParams; external zlibDLL;
-function deflateReset; external zlibDLL;
-function deflateSetDictionary; external zlibDLL;
-function inflate; external zlibDLL;
-function inflateEnd; external zlibDLL;
-function inflateInit2_; external zlibDLL;
-function inflateInit_; external zlibDLL;
-function inflateReset; external zlibDLL;
-function inflateSetDictionary; external zlibDLL;
-function inflateSync; external zlibDLL;
-
-end.
--- a/contrib/delphi2/d_zlib.bpr
+++ b/contrib/delphi2/d_zlib.bpr
@@ -1,224 +0,0 @@
-# ---------------------------------------------------------------------------
-!if !$d(BCB)
-BCB = $(MAKEDIR)\..
-!endif
-
-# ---------------------------------------------------------------------------
-# IDE SECTION
-# ---------------------------------------------------------------------------
-# The following section of the project makefile is managed by the BCB IDE.
-# It is recommended to use the IDE to change any of the values in this
-# section.
-# ---------------------------------------------------------------------------
-
-VERSION = BCB.03
-# ---------------------------------------------------------------------------
-PROJECT = d_zlib.lib
-OBJFILES = d_zlib.obj adler32.obj deflate.obj infblock.obj infcodes.obj inffast.obj \
-  inflate.obj inftrees.obj infutil.obj trees.obj
-RESFILES =
-RESDEPEN = $(RESFILES)
-LIBFILES =
-LIBRARIES = VCL35.lib
-SPARELIBS = VCL35.lib
-DEFFILE =
-PACKAGES = VCLX35.bpi VCL35.bpi VCLDB35.bpi VCLDBX35.bpi ibsmp35.bpi bcbsmp35.bpi \
-  dclocx35.bpi QRPT35.bpi TEEUI35.bpi TEEDB35.bpi TEE35.bpi DSS35.bpi \
-  NMFAST35.bpi INETDB35.bpi INET35.bpi VCLMID35.bpi
-# ---------------------------------------------------------------------------
-PATHCPP = .;
-PATHASM = .;
-PATHPAS = .;
-PATHRC = .;
-DEBUGLIBPATH = $(BCB)\lib\debug
-RELEASELIBPATH = $(BCB)\lib\release
-# ---------------------------------------------------------------------------
-CFLAG1 = -O2 -Ve -d -k- -vi
-CFLAG2 = -I$(BCB)\include;$(BCB)\include\vcl -H=$(BCB)\lib\vcl35.csm
-CFLAG3 = -ff -pr -5
-PFLAGS = -U;$(DEBUGLIBPATH) -I$(BCB)\include;$(BCB)\include\vcl -H -W -$I- -v -JPHN -M
-RFLAGS = -i$(BCB)\include;$(BCB)\include\vcl 
-AFLAGS = /i$(BCB)\include /i$(BCB)\include\vcl /mx /w2 /zn
-LFLAGS =
-IFLAGS = -g -Gn
-# ---------------------------------------------------------------------------
-ALLOBJ = c0w32.obj $(OBJFILES)
-ALLRES = $(RESFILES)
-ALLLIB = $(LIBFILES) $(LIBRARIES) import32.lib cp32mt.lib
-# ---------------------------------------------------------------------------
-!!ifdef IDEOPTIONS
-
-[Version Info]
-IncludeVerInfo=0
-AutoIncBuild=0
-MajorVer=1
-MinorVer=0
-Release=0
-Build=0
-Debug=0
-PreRelease=0
-Special=0
-Private=0
-DLL=0
-Locale=1040
-CodePage=1252
-
-[Version Info Keys]
-CompanyName=
-FileDescription=
-FileVersion=1.0.0.0
-InternalName=
-LegalCopyright=
-LegalTrademarks=
-OriginalFilename=
-ProductName=
-ProductVersion=1.0.0.0
-Comments=
-
-[HistoryLists\hlIncludePath]
-Count=2
-Item0=$(BCB)\include
-Item1=$(BCB)\include;$(BCB)\include\vcl
-
-[HistoryLists\hlLibraryPath]
-Count=1
-Item0=$(BCB)\lib\obj;$(BCB)\lib
-
-[HistoryLists\hlDebugSourcePath]
-Count=1
-Item0=$(BCB)\source\vcl
-
-[Debugging]
-DebugSourceDirs=
-
-[Parameters]
-RunParams=
-HostApplication=
-
-!endif
-
- ---------------------------------------------------------------------------
-# MAKE SECTION
-# ---------------------------------------------------------------------------
-# This section of the project file is not used by the BCB IDE.  It is for
-# the benefit of building from the command-line using the MAKE utility.
-# ---------------------------------------------------------------------------
-
-.autodepend
-# ---------------------------------------------------------------------------
-!if !$d(BCC32)
-BCC32 = bcc32
-!endif
-
-!if !$d(DCC32)
-DCC32 = dcc32
-!endif
-
-!if !$d(TASM32)
-TASM32 = tasm32
-!endif
-
-!if !$d(LINKER)
-LINKER = TLib
-!endif
-
-!if !$d(BRCC32)
-BRCC32 = brcc32
-!endif
-# ---------------------------------------------------------------------------
-!if $d(PATHCPP)
-.PATH.CPP = $(PATHCPP)
-.PATH.C   = $(PATHCPP)
-!endif
-
-!if $d(PATHPAS)
-.PATH.PAS = $(PATHPAS)
-!endif
-
-!if $d(PATHASM)
-.PATH.ASM = $(PATHASM)
-!endif
-
-!if $d(PATHRC)
-.PATH.RC  = $(PATHRC)
-!endif
-# ---------------------------------------------------------------------------
-!ifdef IDEOPTIONS
-
-[Version Info]
-IncludeVerInfo=0
-AutoIncBuild=0
-MajorVer=1
-MinorVer=0
-Release=0
-Build=0
-Debug=0
-PreRelease=0
-Special=0
-Private=0
-DLL=0
-Locale=1040
-CodePage=1252
-
-[Version Info Keys]
-CompanyName=
-FileDescription=
-FileVersion=1.0.0.0
-InternalName=
-LegalCopyright=
-LegalTrademarks=
-OriginalFilename=
-ProductName=
-ProductVersion=1.0.0.0
-Comments=
-
-[HistoryLists\hlIncludePath]
-Count=2
-Item0=$(BCB)\include;$(BCB)\include\vcl
-Item1=$(BCB)\include
-
-[HistoryLists\hlLibraryPath]
-Count=1
-Item0=$(BCB)\lib\obj;$(BCB)\lib
-
-[HistoryLists\hlDebugSourcePath]
-Count=1
-Item0=$(BCB)\source\vcl
-
-[Debugging]
-DebugSourceDirs=
-
-[Parameters]
-RunParams=
-HostApplication=
-
-!endif
-
-$(PROJECT): $(OBJFILES) $(RESDEPEN) $(DEFFILE)
-    $(BCB)\BIN\$(LINKER) @&&!
-    $(LFLAGS) $(IFLAGS) +
-    $(ALLOBJ), +
-    $(PROJECT),, +
-    $(ALLLIB), +
-    $(DEFFILE), +
-    $(ALLRES)
-!
-# ---------------------------------------------------------------------------
-.pas.hpp:
-    $(BCB)\BIN\$(DCC32) $(PFLAGS) {$< }
-
-.pas.obj:
-    $(BCB)\BIN\$(DCC32) $(PFLAGS) {$< }
-
-.cpp.obj:
-    $(BCB)\BIN\$(BCC32) $(CFLAG1) $(CFLAG2) $(CFLAG3) -n$(@D) {$< }
-
-.c.obj:
-    $(BCB)\BIN\$(BCC32) $(CFLAG1) $(CFLAG2) $(CFLAG3) -n$(@D) {$< }
-
-.asm.obj:
-    $(BCB)\BIN\$(TASM32) $(AFLAGS) $<, $@
-
-.rc.res:
-    $(BCB)\BIN\$(BRCC32) $(RFLAGS) -fo$@ $<
-# ---------------------------------------------------------------------------
--- a/contrib/delphi2/d_zlib.cpp
+++ b/contrib/delphi2/d_zlib.cpp
@@ -1,17 +0,0 @@
-#include <condefs.h>
-#pragma hdrstop
-//---------------------------------------------------------------------------
-USEUNIT("adler32.c");
-USEUNIT("deflate.c");
-USEUNIT("infblock.c");
-USEUNIT("infcodes.c");
-USEUNIT("inffast.c");
-USEUNIT("inflate.c");
-USEUNIT("inftrees.c");
-USEUNIT("infutil.c");
-USEUNIT("trees.c");
-//---------------------------------------------------------------------------
-#define Library
-
-// To add a file to the library use the Project menu 'Add to Project'.
-
--- a/contrib/delphi2/readme.txt
+++ b/contrib/delphi2/readme.txt
@@ -1,17 +0,0 @@
-These are files used to compile zlib under Borland C++ Builder 3.
-
-zlib.bpg is the main project group that can be loaded in the BCB IDE and
-loads all other *.bpr projects
-
-zlib.bpr is a project used to create a static zlib.lib library with C calling
-convention for functions.
-
-zlib32.bpr creates a zlib32.dll dynamic link library with Windows standard
-calling convention.
-
-d_zlib.bpr creates a set of .obj files with register calling convention.
-These files are used by zlib.pas to create a Delphi unit containing zlib.
-The d_zlib.lib file generated isn't useful and can be deleted.
-
-zlib.cpp, zlib32.cpp and d_zlib.cpp are used by the above projects.
-
--- a/contrib/delphi2/zlib.bpg
+++ b/contrib/delphi2/zlib.bpg
@@ -1,26 +0,0 @@
-#------------------------------------------------------------------------------
-VERSION = BWS.01
-#------------------------------------------------------------------------------
-!ifndef ROOT
-ROOT = $(MAKEDIR)\..
-!endif
-#------------------------------------------------------------------------------
-MAKE = $(ROOT)\bin\make.exe -$(MAKEFLAGS) -f$**
-DCC = $(ROOT)\bin\dcc32.exe $**
-BRCC = $(ROOT)\bin\brcc32.exe $**
-#------------------------------------------------------------------------------
-PROJECTS = zlib zlib32 d_zlib
-#------------------------------------------------------------------------------
-default: $(PROJECTS)
-#------------------------------------------------------------------------------
-
-zlib: zlib.bpr
-  $(MAKE)
-
-zlib32: zlib32.bpr
-  $(MAKE)
-
-d_zlib: d_zlib.bpr
-  $(MAKE)
-
-
--- a/contrib/delphi2/zlib.bpr
+++ b/contrib/delphi2/zlib.bpr
@@ -1,225 +0,0 @@
-# ---------------------------------------------------------------------------
-!if !$d(BCB)
-BCB = $(MAKEDIR)\..
-!endif
-
-# ---------------------------------------------------------------------------
-# IDE SECTION
-# ---------------------------------------------------------------------------
-# The following section of the project makefile is managed by the BCB IDE.
-# It is recommended to use the IDE to change any of the values in this
-# section.
-# ---------------------------------------------------------------------------
-
-VERSION = BCB.03
-# ---------------------------------------------------------------------------
-PROJECT = zlib.lib
-OBJFILES = zlib.obj adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infblock.obj \
-  infcodes.obj inffast.obj inflate.obj inftrees.obj infutil.obj trees.obj \
-  uncompr.obj zutil.obj
-RESFILES =
-RESDEPEN = $(RESFILES)
-LIBFILES =
-LIBRARIES = VCL35.lib
-SPARELIBS = VCL35.lib
-DEFFILE =
-PACKAGES = VCLX35.bpi VCL35.bpi VCLDB35.bpi VCLDBX35.bpi ibsmp35.bpi bcbsmp35.bpi \
-  dclocx35.bpi QRPT35.bpi TEEUI35.bpi TEEDB35.bpi TEE35.bpi DSS35.bpi \
-  NMFAST35.bpi INETDB35.bpi INET35.bpi VCLMID35.bpi
-# ---------------------------------------------------------------------------
-PATHCPP = .;
-PATHASM = .;
-PATHPAS = .;
-PATHRC = .;
-DEBUGLIBPATH = $(BCB)\lib\debug
-RELEASELIBPATH = $(BCB)\lib\release
-# ---------------------------------------------------------------------------
-CFLAG1 = -O2 -Ve -d -k- -vi
-CFLAG2 = -I$(BCB)\include;$(BCB)\include\vcl -H=$(BCB)\lib\vcl35.csm
-CFLAG3 = -ff -5
-PFLAGS = -U;$(DEBUGLIBPATH) -I$(BCB)\include;$(BCB)\include\vcl -H -W -$I- -v -JPHN -M
-RFLAGS = -i$(BCB)\include;$(BCB)\include\vcl 
-AFLAGS = /i$(BCB)\include /i$(BCB)\include\vcl /mx /w2 /zn
-LFLAGS =
-IFLAGS = -g -Gn
-# ---------------------------------------------------------------------------
-ALLOBJ = c0w32.obj $(OBJFILES)
-ALLRES = $(RESFILES)
-ALLLIB = $(LIBFILES) $(LIBRARIES) import32.lib cp32mt.lib
-# ---------------------------------------------------------------------------
-!!ifdef IDEOPTIONS
-
-[Version Info]
-IncludeVerInfo=0
-AutoIncBuild=0
-MajorVer=1
-MinorVer=0
-Release=0
-Build=0
-Debug=0
-PreRelease=0
-Special=0
-Private=0
-DLL=0
-Locale=1040
-CodePage=1252
-
-[Version Info Keys]
-CompanyName=
-FileDescription=
-FileVersion=1.0.0.0
-InternalName=
-LegalCopyright=
-LegalTrademarks=
-OriginalFilename=
-ProductName=
-ProductVersion=1.0.0.0
-Comments=
-
-[HistoryLists\hlIncludePath]
-Count=2
-Item0=$(BCB)\include
-Item1=$(BCB)\include;$(BCB)\include\vcl
-
-[HistoryLists\hlLibraryPath]
-Count=1
-Item0=$(BCB)\lib\obj;$(BCB)\lib
-
-[HistoryLists\hlDebugSourcePath]
-Count=1
-Item0=$(BCB)\source\vcl
-
-[Debugging]
-DebugSourceDirs=
-
-[Parameters]
-RunParams=
-HostApplication=
-
-!endif
-
- ---------------------------------------------------------------------------
-# MAKE SECTION
-# ---------------------------------------------------------------------------
-# This section of the project file is not used by the BCB IDE.  It is for
-# the benefit of building from the command-line using the MAKE utility.
-# ---------------------------------------------------------------------------
-
-.autodepend
-# ---------------------------------------------------------------------------
-!if !$d(BCC32)
-BCC32 = bcc32
-!endif
-
-!if !$d(DCC32)
-DCC32 = dcc32
-!endif
-
-!if !$d(TASM32)
-TASM32 = tasm32
-!endif
-
-!if !$d(LINKER)
-LINKER = TLib
-!endif
-
-!if !$d(BRCC32)
-BRCC32 = brcc32
-!endif
-# ---------------------------------------------------------------------------
-!if $d(PATHCPP)
-.PATH.CPP = $(PATHCPP)
-.PATH.C   = $(PATHCPP)
-!endif
-
-!if $d(PATHPAS)
-.PATH.PAS = $(PATHPAS)
-!endif
-
-!if $d(PATHASM)
-.PATH.ASM = $(PATHASM)
-!endif
-
-!if $d(PATHRC)
-.PATH.RC  = $(PATHRC)
-!endif
-# ---------------------------------------------------------------------------
-!ifdef IDEOPTIONS
-
-[Version Info]
-IncludeVerInfo=0
-AutoIncBuild=0
-MajorVer=1
-MinorVer=0
-Release=0
-Build=0
-Debug=0
-PreRelease=0
-Special=0
-Private=0
-DLL=0
-Locale=1040
-CodePage=1252
-
-[Version Info Keys]
-CompanyName=
-FileDescription=
-FileVersion=1.0.0.0
-InternalName=
-LegalCopyright=
-LegalTrademarks=
-OriginalFilename=
-ProductName=
-ProductVersion=1.0.0.0
-Comments=
-
-[HistoryLists\hlIncludePath]
-Count=2
-Item0=$(BCB)\include;$(BCB)\include\vcl
-Item1=$(BCB)\include
-
-[HistoryLists\hlLibraryPath]
-Count=1
-Item0=$(BCB)\lib\obj;$(BCB)\lib
-
-[HistoryLists\hlDebugSourcePath]
-Count=1
-Item0=$(BCB)\source\vcl
-
-[Debugging]
-DebugSourceDirs=
-
-[Parameters]
-RunParams=
-HostApplication=
-
-!endif
-
-$(PROJECT): $(OBJFILES) $(RESDEPEN) $(DEFFILE)
-    $(BCB)\BIN\$(LINKER) @&&!
-    $(LFLAGS) $(IFLAGS) +
-    $(ALLOBJ), +
-    $(PROJECT),, +
-    $(ALLLIB), +
-    $(DEFFILE), +
-    $(ALLRES)
-!
-# ---------------------------------------------------------------------------
-.pas.hpp:
-    $(BCB)\BIN\$(DCC32) $(PFLAGS) {$< }
-
-.pas.obj:
-    $(BCB)\BIN\$(DCC32) $(PFLAGS) {$< }
-
-.cpp.obj:
-    $(BCB)\BIN\$(BCC32) $(CFLAG1) $(CFLAG2) $(CFLAG3) -n$(@D) {$< }
-
-.c.obj:
-    $(BCB)\BIN\$(BCC32) $(CFLAG1) $(CFLAG2) $(CFLAG3) -n$(@D) {$< }
-
-.asm.obj:
-    $(BCB)\BIN\$(TASM32) $(AFLAGS) $<, $@
-
-.rc.res:
-    $(BCB)\BIN\$(BRCC32) $(RFLAGS) -fo$@ $<
-# ---------------------------------------------------------------------------
--- a/contrib/delphi2/zlib.cpp
+++ b/contrib/delphi2/zlib.cpp
@@ -1,22 +0,0 @@
-#include <condefs.h>
-#pragma hdrstop
-//---------------------------------------------------------------------------
-USEUNIT("adler32.c");
-USEUNIT("compress.c");
-USEUNIT("crc32.c");
-USEUNIT("deflate.c");
-USEUNIT("gzio.c");
-USEUNIT("infblock.c");
-USEUNIT("infcodes.c");
-USEUNIT("inffast.c");
-USEUNIT("inflate.c");
-USEUNIT("inftrees.c");
-USEUNIT("infutil.c");
-USEUNIT("trees.c");
-USEUNIT("uncompr.c");
-USEUNIT("zutil.c");
-//---------------------------------------------------------------------------
-#define Library
-
-// To add a file to the library use the Project menu 'Add to Project'.
-
--- a/contrib/delphi2/zlib32.bpr
+++ b/contrib/delphi2/zlib32.bpr
@@ -1,174 +0,0 @@
-# ---------------------------------------------------------------------------
-!if !$d(BCB)
-BCB = $(MAKEDIR)\..
-!endif
-
-# ---------------------------------------------------------------------------
-# IDE SECTION
-# ---------------------------------------------------------------------------
-# The following section of the project makefile is managed by the BCB IDE.
-# It is recommended to use the IDE to change any of the values in this
-# section.
-# ---------------------------------------------------------------------------
-
-VERSION = BCB.03
-# ---------------------------------------------------------------------------
-PROJECT = zlib32.dll
-OBJFILES = zlib32.obj adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infblock.obj \
-  infcodes.obj inffast.obj inflate.obj inftrees.obj infutil.obj trees.obj \
-  uncompr.obj zutil.obj
-RESFILES =
-RESDEPEN = $(RESFILES)
-LIBFILES =
-LIBRARIES = 
-SPARELIBS = 
-DEFFILE =
-PACKAGES = VCLX35.bpi VCL35.bpi VCLDB35.bpi VCLDBX35.bpi ibsmp35.bpi bcbsmp35.bpi \
-  dclocx35.bpi QRPT35.bpi TEEUI35.bpi TEEDB35.bpi TEE35.bpi DSS35.bpi \
-  NMFAST35.bpi INETDB35.bpi INET35.bpi VCLMID35.bpi
-# ---------------------------------------------------------------------------
-PATHCPP = .;
-PATHASM = .;
-PATHPAS = .;
-PATHRC = .;
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-RELEASELIBPATH = $(BCB)\lib\release
-# ---------------------------------------------------------------------------
-CFLAG1 = -WD -O2 -Ve -d -k- -vi -c -tWD
-CFLAG2 = -D_NO_VCL;ZLIB_DLL -I$(BCB)\include
-CFLAG3 = -ff -5
-PFLAGS = -D_NO_VCL;ZLIB_DLL -U$(BCB)\lib;$(RELEASELIBPATH) -I$(BCB)\include -$I- -v \
-  -JPHN -M
-RFLAGS = -D_NO_VCL;ZLIB_DLL -i$(BCB)\include
-AFLAGS = /i$(BCB)\include /d_NO_VCL /dZLIB_DLL /mx /w2 /zn
-LFLAGS = -L$(BCB)\lib;$(RELEASELIBPATH) -aa -Tpd -x -Gi
-IFLAGS = -Gn -g
-# ---------------------------------------------------------------------------
-ALLOBJ = c0d32.obj $(OBJFILES)
-ALLRES = $(RESFILES)
-ALLLIB = $(LIBFILES)  import32.lib cw32mt.lib
-# ---------------------------------------------------------------------------
-!ifdef IDEOPTIONS
-
-[Version Info]
-IncludeVerInfo=0
-AutoIncBuild=0
-MajorVer=1
-MinorVer=0
-Release=0
-Build=0
-Debug=0
-PreRelease=0
-Special=0
-Private=0
-DLL=1
-Locale=1040
-CodePage=1252
-
-[Version Info Keys]
-CompanyName=
-FileDescription=DLL (GUI)
-FileVersion=1.0.0.0
-InternalName=
-LegalCopyright=
-LegalTrademarks=
-OriginalFilename=
-ProductName=
-ProductVersion=1.0.0.0
-Comments=
-
-[HistoryLists\hlIncludePath]
-Count=1
-Item0=$(BCB)\include
-
-[HistoryLists\hlLibraryPath]
-Count=1
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-[HistoryLists\hlConditionals]
-Count=1
-Item0=_NO_VCL;ZLIB_DLL
-
-[Debugging]
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-
-[Parameters]
-RunParams=
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-
-!endif
-
-# ---------------------------------------------------------------------------
-# MAKE SECTION
-# ---------------------------------------------------------------------------
-# This section of the project file is not used by the BCB IDE.  It is for
-# the benefit of building from the command-line using the MAKE utility.
-# ---------------------------------------------------------------------------
-
-.autodepend
-# ---------------------------------------------------------------------------
-!if !$d(BCC32)
-BCC32 = bcc32
-!endif
-
-!if !$d(DCC32)
-DCC32 = dcc32
-!endif
-
-!if !$d(TASM32)
-TASM32 = tasm32
-!endif
-
-!if !$d(LINKER)
-LINKER = ilink32
-!endif
-
-!if !$d(BRCC32)
-BRCC32 = brcc32
-!endif
-# ---------------------------------------------------------------------------
-!if $d(PATHCPP)
-.PATH.CPP = $(PATHCPP)
-.PATH.C   = $(PATHCPP)
-!endif
-
-!if $d(PATHPAS)
-.PATH.PAS = $(PATHPAS)
-!endif
-
-!if $d(PATHASM)
-.PATH.ASM = $(PATHASM)
-!endif
-
-!if $d(PATHRC)
-.PATH.RC  = $(PATHRC)
-!endif
-# ---------------------------------------------------------------------------
-$(PROJECT): $(OBJFILES) $(RESDEPEN) $(DEFFILE)
-    $(BCB)\BIN\$(LINKER) @&&!
-    $(LFLAGS) $(IFLAGS) +
-    $(ALLOBJ), +
-    $(PROJECT),, +
-    $(ALLLIB), +
-    $(DEFFILE), +
-    $(ALLRES)
-!
-# ---------------------------------------------------------------------------
-.pas.hpp:
-    $(BCB)\BIN\$(DCC32) $(PFLAGS) {$< }
-
-.pas.obj:
-    $(BCB)\BIN\$(DCC32) $(PFLAGS) {$< }
-
-.cpp.obj:
-    $(BCB)\BIN\$(BCC32) $(CFLAG1) $(CFLAG2) $(CFLAG3) -n$(@D) {$< }
-
-.c.obj:
-    $(BCB)\BIN\$(BCC32) $(CFLAG1) $(CFLAG2) $(CFLAG3) -n$(@D) {$< }
-
-.asm.obj:
-    $(BCB)\BIN\$(TASM32) $(AFLAGS) $<, $@
-
-.rc.res:
-    $(BCB)\BIN\$(BRCC32) $(RFLAGS) -fo$@ $<
-# ---------------------------------------------------------------------------
--- a/contrib/delphi2/zlib32.cpp
+++ b/contrib/delphi2/zlib32.cpp
@@ -1,42 +0,0 @@
-
-#include <windows.h>
-#pragma hdrstop
-#include <condefs.h>
-
-
-//---------------------------------------------------------------------------
-//   Important note about DLL memory management in a VCL DLL:
-//
-//
-//
-// If your DLL uses VCL and exports any functions that pass VCL String objects
-// (or structs/classes containing nested Strings) as parameter or function
-// results, you will need to build both your DLL project and any EXE projects
-// that use your DLL with the dynamic RTL (the RTL DLL).  This will change your
-// DLL and its calling EXE's to use BORLNDMM.DLL as their memory manager. In
-// these cases, the file BORLNDMM.DLL should be deployed along with your DLL
-// and the RTL DLL (CP3240MT.DLL). To avoid the requiring BORLNDMM.DLL in
-// these situations, pass string information using "char *" or ShortString
-// parameters and then link with the static RTL.
-//
-//---------------------------------------------------------------------------
-USEUNIT("adler32.c");
-USEUNIT("compress.c");
-USEUNIT("crc32.c");
-USEUNIT("deflate.c");
-USEUNIT("gzio.c");
-USEUNIT("infblock.c");
-USEUNIT("infcodes.c");
-USEUNIT("inffast.c");
-USEUNIT("inflate.c");
-USEUNIT("inftrees.c");
-USEUNIT("infutil.c");
-USEUNIT("trees.c");
-USEUNIT("uncompr.c");
-USEUNIT("zutil.c");
-//---------------------------------------------------------------------------
-#pragma argsused
-int WINAPI DllEntryPoint(HINSTANCE hinst, unsigned long reason, void*)
-{
-        return 1;
-}
--- a/contrib/gzappend/gzappend.c
+++ b/contrib/gzappend/gzappend.c
@@ -0,0 +1,500 @@
+/* gzappend -- command to append to a gzip file
+
+  Copyright (C) 2003 Mark Adler, all rights reserved
+  version 1.1, 4 Nov 2003
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the author be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Mark Adler    madler@alumni.caltech.edu
+ */
+
+/*
+ * Change history:
+ *
+ * 1.0  19 Oct 2003     - First version
+ * 1.1   4 Nov 2003     - Expand and clarify some comments and notes
+ *                      - Add version and copyright to help
+ *                      - Send help to stdout instead of stderr
+ *                      - Add some preemptive typecasts
+ *                      - Add L to constants in lseek() calls
+ *                      - Remove some debugging information in error messages
+ *                      - Use new data_type definition for zlib 1.2.1
+ *                      - Simplfy and unify file operations
+ *                      - Finish off gzip file in gztack()
+ *                      - Use deflatePrime() instead of adding empty blocks
+ *                      - Keep gzip file clean on appended file read errors
+ *                      - Use in-place rotate instead of auxiliary buffer
+ *                        (Why you ask?  Because it was fun to write!)
+ */
+
+/*
+   gzappend takes a gzip file and appends to it, compressing files from the
+   command line or data from stdin.  The gzip file is written to directly, to
+   avoid copying that file, in case it's large.  Note that this results in the
+   unfriendly behavior that if gzappend fails, the gzip file is corrupted.
+
+   This program was written to illustrate the use of the new Z_BLOCK option of
+   zlib 1.2.1's inflate() function.  This option returns from inflate() at each
+   block boundary to facilitate locating and modifying the last block bit at
+   the start of the final deflate block.  Also whether using Z_BLOCK or not,
+   another required feature of zlib 1.2.1 is that inflate() now provides the
+   number of unusued bits in the last input byte used.  gzappend will not work
+   with versions of zlib earlier than 1.2.1.
+
+   gzappend first decompresses the gzip file internally, discarding all but
+   the last 32K of uncompressed data, and noting the location of the last block
+   bit and the number of unused bits in the last byte of the compressed data.
+   The gzip trailer containing the CRC-32 and length of the uncompressed data
+   is verified.  This trailer will be later overwritten.
+
+   Then the last block bit is cleared by seeking back in the file and rewriting
+   the byte that contains it.  Seeking forward, the last byte of the compressed
+   data is saved along with the number of unused bits to initialize deflate.
+
+   A deflate process is initialized, using the last 32K of the uncompressed
+   data from the gzip file to initialize the dictionary.  If the total
+   uncompressed data was less than 32K, then all of it is used to initialize
+   the dictionary.  The deflate output bit buffer is also initialized with the
+   last bits from the original deflate stream.  From here on, the data to
+   append is simply compressed using deflate, and written to the gzip file.
+   When that is complete, the new CRC-32 and uncompressed length are written
+   as the trailer of the gzip file.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include "zlib.h"
+
+#define local static
+#define LGCHUNK 14
+#define CHUNK (1U << LGCHUNK)
+#define DSIZE 32768U
+
+/* print an error message and terminate with extreme prejudice */
+local void bye(char *msg1, char *msg2)
+{
+    fprintf(stderr, "gzappend error: %s%s\n", msg1, msg2);
+    exit(1);
+}
+
+/* return the greatest common divisor of a and b using Euclid's algorithm,
+   modified to be fast when one argument much greater than the other, and
+   coded to avoid unnecessary swapping */
+local unsigned gcd(unsigned a, unsigned b)
+{
+    unsigned c;
+
+    while (a && b)
+        if (a > b) {
+            c = b;
+            while (a - c >= c)
+                c <<= 1;
+            a -= c;
+        }
+        else {
+            c = a;
+            while (b - c >= c)
+                c <<= 1;
+            b -= c;
+        }
+    return a + b;
+}
+
+/* rotate list[0..len-1] left by rot positions, in place */
+local void rotate(unsigned char *list, unsigned len, unsigned rot)
+{
+    unsigned char tmp;
+    unsigned cycles;
+    unsigned char *start, *last, *to, *from;
+
+    /* normalize rot and handle degenerate cases */
+    if (len < 2) return;
+    if (rot >= len) rot %= len;
+    if (rot == 0) return;
+
+    /* pointer to last entry in list */
+    last = list + (len - 1);
+
+    /* do simple left shift by one */
+    if (rot == 1) {
+        tmp = *list;
+        memcpy(list, list + 1, len - 1);
+        *last = tmp;
+        return;
+    }
+
+    /* do simple right shift by one */
+    if (rot == len - 1) {
+        tmp = *last;
+        memmove(list + 1, list, len - 1);
+        *list = tmp;
+        return;
+    }
+
+    /* otherwise do rotate as a set of cycles in place */
+    cycles = gcd(len, rot);             /* number of cycles */
+    do {
+        start = from = list + cycles;   /* start index is arbitrary */
+        tmp = *from;                    /* save entry to be overwritten */
+        for (;;) {
+            to = from;                  /* next step in cycle */
+            from += rot;                /* go right rot positions */
+            if (from > last) from -= len;   /* (pointer better not wrap) */
+            if (from == start) break;   /* all but one shifted */
+            *to = *from;                /* shift left */
+        }
+        *to = tmp;                      /* complete the circle */
+    } while (--cycles);
+}
+
+/* structure for gzip file read operations */
+typedef struct {
+    int fd;                     /* file descriptor */
+    int size;                   /* 1 << size is bytes in buf */
+    unsigned left;              /* bytes available at next */
+    unsigned char *buf;         /* buffer */
+    unsigned char *next;        /* next byte in buffer */
+    char *name;                 /* file name for error messages */
+} file;
+
+/* reload buffer */
+local int readin(file *in)
+{
+    int len;
+
+    len = read(in->fd, in->buf, 1 << in->size);
+    if (len == -1) bye("error reading ", in->name);
+    in->left = (unsigned)len;
+    in->next = in->buf;
+    return len;
+}
+
+/* read from file in, exit if end-of-file */
+local int readmore(file *in)
+{
+    if (readin(in) == 0) bye("unexpected end of ", in->name);
+    return 0;
+}
+
+#define read1(in) (in->left == 0 ? readmore(in) : 0, \
+                   in->left--, *(in->next)++)
+
+/* skip over n bytes of in */
+local void skip(file *in, unsigned n)
+{
+    unsigned bypass;
+
+    if (n > in->left) {
+        n -= in->left;
+        bypass = n & ~((1U << in->size) - 1);
+        if (bypass) {
+            if (lseek(in->fd, (off_t)bypass, SEEK_CUR) == -1)
+                bye("seeking ", in->name);
+            n -= bypass;
+        }
+        readmore(in);
+        if (n > in->left)
+            bye("unexpected end of ", in->name);
+    }
+    in->left -= n;
+    in->next += n;
+}
+
+/* read a four-byte unsigned integer, little-endian, from in */
+unsigned long read4(file *in)
+{
+    unsigned long val;
+
+    val = read1(in);
+    val += (unsigned)read1(in) << 8;
+    val += (unsigned long)read1(in) << 16;
+    val += (unsigned long)read1(in) << 24;
+    return val;
+}
+
+/* skip over gzip header */
+local void gzheader(file *in)
+{
+    int flags;
+    unsigned n;
+
+    if (read1(in) != 31 || read1(in) != 139) bye(in->name, " not a gzip file");
+    if (read1(in) != 8) bye("unknown compression method in", in->name);
+    flags = read1(in);
+    if (flags & 0xe0) bye("unknown header flags set in", in->name);
+    skip(in, 6);
+    if (flags & 4) {
+        n = read1(in);
+        n += (unsigned)(read1(in)) << 8;
+        skip(in, n);
+    }
+    if (flags & 8) while (read1(in) != 0) ;
+    if (flags & 16) while (read1(in) != 0) ;
+    if (flags & 2) skip(in, 2);
+}
+
+/* decompress gzip file "name", return strm with a deflate stream ready to
+   continue compression of the data in the gzip file, and return a file
+   descriptor pointing to where to write the compressed data -- the deflate
+   stream is initialized to compress using level "level" */
+local int gzscan(char *name, z_stream *strm, int level)
+{
+    int ret, lastbit, left, full;
+    unsigned have;
+    unsigned long crc, tot;
+    unsigned char *window;
+    off_t lastoff, end;
+    file gz;
+
+    /* open gzip file */
+    gz.name = name;
+    gz.fd = open(name, O_RDWR, 0);
+    if (gz.fd == -1) bye("cannot open ", name);
+    gz.buf = malloc(CHUNK);
+    if (gz.buf == NULL) bye("out of memory", "");
+    gz.size = LGCHUNK;
+    gz.left = 0;
+
+    /* skip gzip header */
+    gzheader(&gz);
+
+    /* prepare to decompress */
+    window = malloc(DSIZE);
+    if (window == NULL) bye("out of memory", "");
+    strm->zalloc = Z_NULL;
+    strm->zfree = Z_NULL;
+    strm->opaque = Z_NULL;
+    ret = inflateInit2(strm, -15);
+    if (ret != Z_OK) bye("out of memory", " or library mismatch");
+
+    /* decompress the deflate stream, saving append information */
+    lastbit = 0;
+    lastoff = lseek(gz.fd, 0L, SEEK_CUR) - gz.left;
+    left = 0;
+    strm->avail_in = gz.left;
+    strm->next_in = gz.next;
+    crc = crc32(0L, Z_NULL, 0);
+    have = full = 0;
+    do {
+        /* if needed, get more input */
+        if (strm->avail_in == 0) {
+            readmore(&gz);
+            strm->avail_in = gz.left;
+            strm->next_in = gz.next;
+        }
+
+        /* set up output to next available section of sliding window */
+        strm->avail_out = DSIZE - have;
+        strm->next_out = window + have;
+
+        /* inflate and check for errors */
+        ret = inflate(strm, Z_BLOCK);
+        if (ret == Z_STREAM_ERROR) bye("internal stream error!", "");
+        if (ret == Z_MEM_ERROR) bye("out of memory", "");
+        if (ret == Z_DATA_ERROR)
+            bye("invalid compressed data--format violated in", name);
+
+        /* update crc and sliding window pointer */
+        crc = crc32(crc, window + have, DSIZE - have - strm->avail_out);
+        if (strm->avail_out)
+            have = DSIZE - strm->avail_out;
+        else {
+            have = 0;
+            full = 1;
+        }
+
+        /* process end of block */
+        if (strm->data_type & 128) {
+            if (strm->data_type & 64)
+                left = strm->data_type & 0x1f;
+            else {
+                lastbit = strm->data_type & 0x1f;
+                lastoff = lseek(gz.fd, 0L, SEEK_CUR) - strm->avail_in;
+            }
+        }
+    } while (ret != Z_STREAM_END);
+    inflateEnd(strm);
+    gz.left = strm->avail_in;
+    gz.next = strm->next_in;
+
+    /* save the location of the end of the compressed data */
+    end = lseek(gz.fd, 0L, SEEK_CUR) - gz.left;
+
+    /* check gzip trailer and save total for deflate */
+    if (crc != read4(&gz))
+        bye("invalid compressed data--crc mismatch in ", name);
+    tot = strm->total_out;
+    if ((tot & 0xffffffffUL) != read4(&gz))
+        bye("invalid compressed data--length mismatch in", name);
+
+    /* if not at end of file, warn */
+    if (gz.left || readin(&gz))
+        fprintf(stderr,
+            "gzappend warning: junk at end of gzip file overwritten\n");
+
+    /* clear last block bit */
+    lseek(gz.fd, lastoff - (lastbit != 0), SEEK_SET);
+    if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name);
+    *gz.buf = (unsigned char)(*gz.buf ^ (1 << ((8 - lastbit) & 7)));
+    lseek(gz.fd, -1L, SEEK_CUR);
+    if (write(gz.fd, gz.buf, 1) != 1) bye("writing after seek to ", name);
+
+    /* if window wrapped, build dictionary from window by rotating */
+    if (full) {
+        rotate(window, DSIZE, have);
+        have = DSIZE;
+    }
+
+    /* set up deflate stream with window, crc, total_in, and leftover bits */
+    ret = deflateInit2(strm, level, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY);
+    if (ret != Z_OK) bye("out of memory", "");
+    deflateSetDictionary(strm, window, have);
+    strm->adler = crc;
+    strm->total_in = tot;
+    if (left) {
+        lseek(gz.fd, --end, SEEK_SET);
+        if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name);
+        deflatePrime(strm, 8 - left, *gz.buf);
+    }
+    lseek(gz.fd, end, SEEK_SET);
+
+    /* clean up and return */
+    free(window);
+    free(gz.buf);
+    return gz.fd;
+}
+
+/* append file "name" to gzip file gd using deflate stream strm -- if last
+   is true, then finish off the deflate stream at the end */
+local void gztack(char *name, int gd, z_stream *strm, int last)
+{
+    int fd, len, ret;
+    unsigned left;
+    unsigned char *in, *out;
+
+    /* open file to compress and append */
+    fd = 0;
+    if (name != NULL) {
+        fd = open(name, O_RDONLY, 0);
+        if (fd == -1)
+            fprintf(stderr, "gzappend warning: %s not found, skipping ...\n",
+                    name);
+    }
+
+    /* allocate buffers */
+    in = fd == -1 ? NULL : malloc(CHUNK);
+    out = malloc(CHUNK);
+    if (out == NULL) bye("out of memory", "");
+
+    /* compress input file and append to gzip file */
+    do {
+        /* get more input */
+        len = fd == -1 ? 0 : read(fd, in, CHUNK);
+        if (len == -1) {
+            fprintf(stderr,
+                    "gzappend warning: error reading %s, skipping rest ...\n",
+                    name);
+            len = 0;
+        }
+        strm->avail_in = (unsigned)len;
+        strm->next_in = in;
+        if (len) strm->adler = crc32(strm->adler, in, (unsigned)len);
+
+        /* compress and write all available output */
+        do {
+            strm->avail_out = CHUNK;
+            strm->next_out = out;
+            ret = deflate(strm, last && len == 0 ? Z_FINISH : Z_NO_FLUSH);
+            left = CHUNK - strm->avail_out;
+            while (left) {
+                len = write(gd, out + CHUNK - strm->avail_out - left, left);
+                if (len == -1) bye("writing gzip file", "");
+                left -= (unsigned)len;
+            }
+        } while (strm->avail_out == 0 && ret != Z_STREAM_END);
+    } while (len != 0);
+
+    /* write trailer after last entry */
+    if (last) {
+        deflateEnd(strm);
+        out[0] = (unsigned char)(strm->adler);
+        out[1] = (unsigned char)(strm->adler >> 8);
+        out[2] = (unsigned char)(strm->adler >> 16);
+        out[3] = (unsigned char)(strm->adler >> 24);
+        out[4] = (unsigned char)(strm->total_in);
+        out[5] = (unsigned char)(strm->total_in >> 8);
+        out[6] = (unsigned char)(strm->total_in >> 16);
+        out[7] = (unsigned char)(strm->total_in >> 24);
+        len = 8;
+        do {
+            ret = write(gd, out + 8 - len, len);
+            if (ret == -1) bye("writing gzip file", "");
+            len -= ret;
+        } while (len);
+        close(gd);
+    }
+
+    /* clean up and return */
+    free(out);
+    if (in != NULL) free(in);
+    if (fd > 0) close(fd);
+}
+
+/* process the compression level option if present, scan the gzip file, and
+   append the specified files, or append the data from stdin if no other file
+   names are provided on the command line -- the gzip file must be writable
+   and seekable */
+int main(int argc, char **argv)
+{
+    int gd, level;
+    z_stream strm;
+
+    /* ignore command name */
+    argv++;
+
+    /* provide usage if no arguments */
+    if (*argv == NULL) {
+        printf("gzappend 1.1 (4 Nov 2003) Copyright (C) 2003 Mark Adler\n");
+        printf(
+            "usage: gzappend [-level] file.gz [ addthis [ andthis ... ]]\n");
+        return 0;
+    }
+
+    /* set compression level */
+    level = Z_DEFAULT_COMPRESSION;
+    if (argv[0][0] == '-') {
+        if (argv[0][1] < '0' || argv[0][1] > '9' || argv[0][2] != 0)
+            bye("invalid compression level", "");
+        level = argv[0][1] - '0';
+        if (*++argv == NULL) bye("no gzip file name after options", "");
+    }
+
+    /* prepare to append to gzip file */
+    gd = gzscan(*argv++, &strm, level);
+
+    /* append files on command line, or from stdin if none */
+    if (*argv == NULL)
+        gztack(NULL, gd, &strm, 1);
+    else
+        do {
+            gztack(*argv, gd, &strm, argv[1] == NULL);
+        } while (*++argv != NULL);
+    return 0;
+}
--- a/contrib/infback9/README
+++ b/contrib/infback9/README
@@ -0,0 +1 @@
+See infback9.h for what this is and how to use it.
--- a/contrib/infback9/infback9.c
+++ b/contrib/infback9/infback9.c
@@ -0,0 +1,605 @@
+/* infback9.c -- inflate deflate64 data using a call-back interface
+ * Copyright (C) 1995-2003 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zutil.h"
+#include "infback9.h"
+#include "inftree9.h"
+#include "inflate9.h"
+
+#define WSIZE 65536UL
+
+/*
+   strm provides memory allocation functions in zalloc and zfree, or
+   Z_NULL to use the library memory allocation functions.
+
+   window is a user-supplied window and output buffer that is 64K bytes.
+ */
+int ZEXPORT inflateBack9Init_(strm, window, version, stream_size)
+z_stream FAR *strm;
+unsigned char FAR *window;
+const char *version;
+int stream_size;
+{
+    struct inflate_state FAR *state;
+
+    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
+        stream_size != (int)(sizeof(z_stream)))
+        return Z_VERSION_ERROR;
+    if (strm == Z_NULL || window == Z_NULL)
+        return Z_STREAM_ERROR;
+    strm->msg = Z_NULL;                 /* in case we return an error */
+    if (strm->zalloc == (alloc_func)0) {
+        strm->zalloc = zcalloc;
+        strm->opaque = (voidpf)0;
+    }
+    if (strm->zfree == (free_func)0) strm->zfree = zcfree;
+    state = (struct inflate_state FAR *)ZALLOC(strm, 1,
+                                               sizeof(struct inflate_state));
+    if (state == Z_NULL) return Z_MEM_ERROR;
+    Tracev((stderr, "inflate: allocated\n"));
+    strm->state = (voidpf)state;
+    state->window = window;
+    return Z_OK;
+}
+
+/*
+   Build and output length and distance decoding tables for fixed code
+   decoding.
+ */
+#ifdef MAKEFIXED
+#include <stdio.h>
+
+void makefixed9(void)
+{
+    unsigned sym, bits, low, size;
+    code *next, *lenfix, *distfix;
+    struct inflate_state state;
+    code fixed[544];
+
+    /* literal/length table */
+    sym = 0;
+    while (sym < 144) state.lens[sym++] = 8;
+    while (sym < 256) state.lens[sym++] = 9;
+    while (sym < 280) state.lens[sym++] = 7;
+    while (sym < 288) state.lens[sym++] = 8;
+    next = fixed;
+    lenfix = next;
+    bits = 9;
+    inflate_table9(LENS, state.lens, 288, &(next), &(bits), state.work);
+
+    /* distance table */
+    sym = 0;
+    while (sym < 32) state.lens[sym++] = 5;
+    distfix = next;
+    bits = 5;
+    inflate_table9(DISTS, state.lens, 32, &(next), &(bits), state.work);
+
+    /* write tables */
+    puts("    /* inffix9.h -- table for decoding deflate64 fixed codes");
+    puts("     * Generated automatically by makefixed9().");
+    puts("     */");
+    puts("");
+    puts("    /* WARNING: this file should *not* be used by applications.");
+    puts("       It is part of the implementation of this library and is");
+    puts("       subject to change. Applications should only use zlib.h.");
+    puts("     */");
+    puts("");
+    size = 1U << 9;
+    printf("    static const code lenfix[%u] = {", size);
+    low = 0;
+    for (;;) {
+        if ((low % 6) == 0) printf("\n        ");
+        printf("{%u,%u,%d}", lenfix[low].op, lenfix[low].bits,
+               lenfix[low].val);
+        if (++low == size) break;
+        putchar(',');
+    }
+    puts("\n    };");
+    size = 1U << 5;
+    printf("\n    static const code distfix[%u] = {", size);
+    low = 0;
+    for (;;) {
+        if ((low % 5) == 0) printf("\n        ");
+        printf("{%u,%u,%d}", distfix[low].op, distfix[low].bits,
+               distfix[low].val);
+        if (++low == size) break;
+        putchar(',');
+    }
+    puts("\n    };");
+}
+#endif /* MAKEFIXED */
+
+/* Macros for inflateBack(): */
+
+/* Clear the input bit accumulator */
+#define INITBITS() \
+    do { \
+        hold = 0; \
+        bits = 0; \
+    } while (0)
+
+/* Assure that some input is available.  If input is requested, but denied,
+   then return a Z_BUF_ERROR from inflateBack(). */
+#define PULL() \
+    do { \
+        if (have == 0) { \
+            have = in(in_desc, &next); \
+            if (have == 0) { \
+                next = Z_NULL; \
+                ret = Z_BUF_ERROR; \
+                goto inf_leave; \
+            } \
+        } \
+    } while (0)
+
+/* Get a byte of input into the bit accumulator, or return from inflateBack()
+   with an error if there is no input available. */
+#define PULLBYTE() \
+    do { \
+        PULL(); \
+        have--; \
+        hold += (unsigned long)(*next++) << bits; \
+        bits += 8; \
+    } while (0)
+
+/* Assure that there are at least n bits in the bit accumulator.  If there is
+   not enough available input to do that, then return from inflateBack() with
+   an error. */
+#define NEEDBITS(n) \
+    do { \
+        while (bits < (unsigned)(n)) \
+            PULLBYTE(); \
+    } while (0)
+
+/* Return the low n bits of the bit accumulator (n <= 16) */
+#define BITS(n) \
+    ((unsigned)hold & ((1U << (n)) - 1))
+
+/* Remove n bits from the bit accumulator */
+#define DROPBITS(n) \
+    do { \
+        hold >>= (n); \
+        bits -= (unsigned)(n); \
+    } while (0)
+
+/* Remove zero to seven bits as needed to go to a byte boundary */
+#define BYTEBITS() \
+    do { \
+        hold >>= bits & 7; \
+        bits -= bits & 7; \
+    } while (0)
+
+/* Assure that some output space is available, by writing out the window
+   if it's full.  If the write fails, return from inflateBack() with a
+   Z_BUF_ERROR. */
+#define ROOM() \
+    do { \
+        if (left == 0) { \
+            put = window; \
+            left = WSIZE; \
+            wrap = 1; \
+            if (out(out_desc, put, (unsigned)left)) { \
+                ret = Z_BUF_ERROR; \
+                goto inf_leave; \
+            } \
+        } \
+    } while (0)
+
+/*
+   strm provides the memory allocation functions and window buffer on input,
+   and provides information on the unused input on return.  For Z_DATA_ERROR
+   returns, strm will also provide an error message.
+
+   in() and out() are the call-back input and output functions.  When
+   inflateBack() needs more input, it calls in().  When inflateBack() has
+   filled the window with output, or when it completes with data in the
+   window, it calls out() to write out the data.  The application must not
+   change the provided input until in() is called again or inflateBack()
+   returns.  The application must not change the window/output buffer until
+   inflateBack() returns.
+
+   in() and out() are called with a descriptor parameter provided in the
+   inflateBack() call.  This parameter can be a structure that provides the
+   information required to do the read or write, as well as accumulated
+   information on the input and output such as totals and check values.
+
+   in() should return zero on failure.  out() should return non-zero on
+   failure.  If either in() or out() fails, than inflateBack() returns a
+   Z_BUF_ERROR.  strm->next_in can be checked for Z_NULL to see whether it
+   was in() or out() that caused in the error.  Otherwise,  inflateBack()
+   returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
+   error, or Z_MEM_ERROR if it could not allocate memory for the state.
+   inflateBack() can also return Z_STREAM_ERROR if the input parameters
+   are not correct, i.e. strm is Z_NULL or the state was not initialized.
+ */
+int ZEXPORT inflateBack9(strm, in, in_desc, out, out_desc)
+z_stream FAR *strm;
+in_func in;
+void FAR *in_desc;
+out_func out;
+void FAR *out_desc;
+{
+    struct inflate_state FAR *state;
+    unsigned char FAR *next;    /* next input */
+    unsigned char FAR *put;     /* next output */
+    unsigned have;              /* available input */
+    unsigned long left;         /* available output */
+    inflate_mode mode;          /* current inflate mode */
+    int lastblock;              /* true if processing last block */
+    int wrap;                   /* true if the window has wrapped */
+    unsigned long write;        /* window write index */
+    unsigned char FAR *window;  /* allocated sliding window, if needed */
+    unsigned long hold;         /* bit buffer */
+    unsigned bits;              /* bits in bit buffer */
+    unsigned extra;             /* extra bits needed */
+    unsigned long length;       /* literal or length of data to copy */
+    unsigned long offset;       /* distance back to copy string from */
+    unsigned long copy;         /* number of stored or match bytes to copy */
+    unsigned char FAR *from;    /* where to copy match bytes from */
+    code const FAR *lencode;    /* starting table for length/literal codes */
+    code const FAR *distcode;   /* starting table for distance codes */
+    unsigned lenbits;           /* index bits for lencode */
+    unsigned distbits;          /* index bits for distcode */
+    code this;                  /* current decoding table entry */
+    code last;                  /* parent table entry */
+    unsigned len;               /* length to copy for repeats, bits to drop */
+    int ret;                    /* return code */
+    static const unsigned short order[19] = /* permutation of code lengths */
+        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+#include "inffix9.h"
+
+    /* Check that the strm exists and that the state was initialized */
+    if (strm == Z_NULL || strm->state == Z_NULL)
+        return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* Reset the state */
+    strm->msg = Z_NULL;
+    mode = TYPE;
+    lastblock = 0;
+    write = 0;
+    wrap = 0;
+    window = state->window;
+    next = strm->next_in;
+    have = next != Z_NULL ? strm->avail_in : 0;
+    hold = 0;
+    bits = 0;
+    put = window;
+    left = WSIZE;
+    lencode = Z_NULL;
+    distcode = Z_NULL;
+
+    /* Inflate until end of block marked as last */
+    for (;;)
+        switch (mode) {
+        case TYPE:
+            /* determine and dispatch block type */
+            if (lastblock) {
+                BYTEBITS();
+                mode = DONE;
+                break;
+            }
+            NEEDBITS(3);
+            lastblock = BITS(1);
+            DROPBITS(1);
+            switch (BITS(2)) {
+            case 0:                             /* stored block */
+                Tracev((stderr, "inflate:     stored block%s\n",
+                        lastblock ? " (last)" : ""));
+                mode = STORED;
+                break;
+            case 1:                             /* fixed block */
+                lencode = lenfix;
+                lenbits = 9;
+                distcode = distfix;
+                distbits = 5;
+                Tracev((stderr, "inflate:     fixed codes block%s\n",
+                        lastblock ? " (last)" : ""));
+                mode = LEN;                     /* decode codes */
+                break;
+            case 2:                             /* dynamic block */
+                Tracev((stderr, "inflate:     dynamic codes block%s\n",
+                        lastblock ? " (last)" : ""));
+                mode = TABLE;
+                break;
+            case 3:
+                strm->msg = (char *)"invalid block type";
+                mode = BAD;
+            }
+            DROPBITS(2);
+            break;
+
+        case STORED:
+            /* get and verify stored block length */
+            BYTEBITS();                         /* go to byte boundary */
+            NEEDBITS(32);
+            if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
+                strm->msg = (char *)"invalid stored block lengths";
+                mode = BAD;
+                break;
+            }
+            length = (unsigned)hold & 0xffff;
+            Tracev((stderr, "inflate:       stored length %lu\n",
+                    length));
+            INITBITS();
+
+            /* copy stored block from input to output */
+            while (length != 0) {
+                copy = length;
+                PULL();
+                ROOM();
+                if (copy > have) copy = have;
+                if (copy > left) copy = left;
+                zmemcpy(put, next, copy);
+                have -= copy;
+                next += copy;
+                left -= copy;
+                put += copy;
+                length -= copy;
+            }
+            Tracev((stderr, "inflate:       stored end\n"));
+            mode = TYPE;
+            break;
+
+        case TABLE:
+            /* get dynamic table entries descriptor */
+            NEEDBITS(14);
+            state->nlen = BITS(5) + 257;
+            DROPBITS(5);
+            state->ndist = BITS(5) + 1;
+            DROPBITS(5);
+            state->ncode = BITS(4) + 4;
+            DROPBITS(4);
+            if (state->nlen > 286) {
+                strm->msg = (char *)"too many length symbols";
+                mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       table sizes ok\n"));
+
+            /* get code length code lengths (not a typo) */
+            state->have = 0;
+            while (state->have < state->ncode) {
+                NEEDBITS(3);
+                state->lens[order[state->have++]] = (unsigned short)BITS(3);
+                DROPBITS(3);
+            }
+            while (state->have < 19)
+                state->lens[order[state->have++]] = 0;
+            state->next = state->codes;
+            lencode = (code const FAR *)(state->next);
+            lenbits = 7;
+            ret = inflate_table9(CODES, state->lens, 19, &(state->next),
+                                &(lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid code lengths set";
+                mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       code lengths ok\n"));
+
+            /* get length and distance code code lengths */
+            state->have = 0;
+            while (state->have < state->nlen + state->ndist) {
+                for (;;) {
+                    this = lencode[BITS(lenbits)];
+                    if ((unsigned)(this.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                if (this.val < 16) {
+                    NEEDBITS(this.bits);
+                    DROPBITS(this.bits);
+                    state->lens[state->have++] = this.val;
+                }
+                else {
+                    if (this.val == 16) {
+                        NEEDBITS(this.bits + 2);
+                        DROPBITS(this.bits);
+                        if (state->have == 0) {
+                            strm->msg = (char *)"invalid bit length repeat";
+                            mode = BAD;
+                            break;
+                        }
+                        len = (unsigned)(state->lens[state->have - 1]);
+                        copy = 3 + BITS(2);
+                        DROPBITS(2);
+                    }
+                    else if (this.val == 17) {
+                        NEEDBITS(this.bits + 3);
+                        DROPBITS(this.bits);
+                        len = 0;
+                        copy = 3 + BITS(3);
+                        DROPBITS(3);
+                    }
+                    else {
+                        NEEDBITS(this.bits + 7);
+                        DROPBITS(this.bits);
+                        len = 0;
+                        copy = 11 + BITS(7);
+                        DROPBITS(7);
+                    }
+                    if (state->have + copy > state->nlen + state->ndist) {
+                        strm->msg = (char *)"invalid bit length repeat";
+                        mode = BAD;
+                        break;
+                    }
+                    while (copy--)
+                        state->lens[state->have++] = (unsigned short)len;
+                }
+            }
+
+            /* build code tables */
+            state->next = state->codes;
+            lencode = (code const FAR *)(state->next);
+            lenbits = 9;
+            ret = inflate_table9(LENS, state->lens, state->nlen,
+                            &(state->next), &(lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid literal/lengths set";
+                mode = BAD;
+                break;
+            }
+            distcode = (code const FAR *)(state->next);
+            distbits = 6;
+            ret = inflate_table9(DISTS, state->lens + state->nlen,
+                            state->ndist, &(state->next), &(distbits),
+                            state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid distances set";
+                mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       codes ok\n"));
+            mode = LEN;
+
+        case LEN:
+            /* get a literal, length, or end-of-block code */
+            for (;;) {
+                this = lencode[BITS(lenbits)];
+                if ((unsigned)(this.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if (this.op && (this.op & 0xf0) == 0) {
+                last = this;
+                for (;;) {
+                    this = lencode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + this.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+            }
+            DROPBITS(this.bits);
+            length = (unsigned)this.val;
+
+            /* process literal */
+            if (this.op == 0) {
+                Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?
+                        "inflate:         literal '%c'\n" :
+                        "inflate:         literal 0x%02x\n", this.val));
+                ROOM();
+                *put++ = (unsigned char)(length);
+                left--;
+                mode = LEN;
+                break;
+            }
+
+            /* process end of block */
+            if (this.op & 32) {
+                Tracevv((stderr, "inflate:         end of block\n"));
+                mode = TYPE;
+                break;
+            }
+
+            /* invalid code */
+            if (this.op & 64) {
+                strm->msg = (char *)"invalid literal/length code";
+                mode = BAD;
+                break;
+            }
+
+            /* length code -- get extra bits, if any */
+            extra = (unsigned)(this.op) & 31;
+            if (extra != 0) {
+                NEEDBITS(extra);
+                length += BITS(extra);
+                DROPBITS(extra);
+            }
+            Tracevv((stderr, "inflate:         length %lu\n", length));
+
+            /* get distance code */
+            for (;;) {
+                this = distcode[BITS(distbits)];
+                if ((unsigned)(this.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if ((this.op & 0xf0) == 0) {
+                last = this;
+                for (;;) {
+                    this = distcode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + this.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+            }
+            DROPBITS(this.bits);
+            if (this.op & 64) {
+                strm->msg = (char *)"invalid distance code";
+                mode = BAD;
+                break;
+            }
+            offset = (unsigned)this.val;
+
+            /* get distance extra bits, if any */
+            extra = (unsigned)(this.op) & 15;
+            if (extra != 0) {
+                NEEDBITS(extra);
+                offset += BITS(extra);
+                DROPBITS(extra);
+            }
+            if (offset > WSIZE - (wrap ? 0: left)) {
+                strm->msg = (char *)"invalid distance too far back";
+                mode = BAD;
+                break;
+            }
+            Tracevv((stderr, "inflate:         distance %lu\n", offset));
+
+            /* copy match from window to output */
+            do {
+                ROOM();
+                copy = WSIZE - offset;
+                if (copy < left) {
+                    from = put + copy;
+                    copy = left - copy;
+                }
+                else {
+                    from = put - offset;
+                    copy = left;
+                }
+                if (copy > length) copy = length;
+                length -= copy;
+                left -= copy;
+                do {
+                    *put++ = *from++;
+                } while (--copy);
+            } while (length != 0);
+            break;
+
+        case DONE:
+            /* inflate stream terminated properly -- write leftover output */
+            ret = Z_STREAM_END;
+            if (left < WSIZE) {
+                if (out(out_desc, window, (unsigned)(WSIZE - left)))
+                    ret = Z_BUF_ERROR;
+            }
+            goto inf_leave;
+
+        case BAD:
+            ret = Z_DATA_ERROR;
+            goto inf_leave;
+
+        default:                /* can't happen, but makes compilers happy */
+            ret = Z_STREAM_ERROR;
+            goto inf_leave;
+        }
+
+    /* Return unused input */
+  inf_leave:
+    strm->next_in = next;
+    strm->avail_in = have;
+    return ret;
+}
+
+int ZEXPORT inflateBack9End(strm)
+z_stream FAR *strm;
+{
+    if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
+        return Z_STREAM_ERROR;
+    ZFREE(strm, strm->state);
+    strm->state = Z_NULL;
+    Tracev((stderr, "inflate: end\n"));
+    return Z_OK;
+}
--- a/contrib/infback9/infback9.h
+++ b/contrib/infback9/infback9.h
@@ -0,0 +1,29 @@
+/* infback9.h -- header for using inflateBack9 functions
+ * Copyright (C) 2003 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/*
+ * This header file and associated patches provide a decoder for PKWare's
+ * undocumented deflate64 compression method (method 9).  Use with infback9.c,
+ * inftree9.h, inftree9.c, and inffix9.h.  These patches are not supported.
+ * This should be compiled with zlib, since it uses zutil.h and zutil.o.
+ * This code has not yet been tested on 16-bit architectures.  See the
+ * comments in zlib.h for inflateBack() usage.  These functions are used
+ * identically, except that there is no windowBits parameter, and a 64K
+ * window must be provided.  Also if int's are 16 bits, then a zero for
+ * the third parameter of the "out" function actually means 65536UL.
+ * zlib.h must be included before this header file.
+ */
+
+ZEXTERN int ZEXPORT inflateBack9 OF((z_stream FAR *strm,
+                                    in_func in, void FAR *in_desc,
+                                    out_func out, void FAR *out_desc));
+ZEXTERN int ZEXPORT inflateBack9End OF((z_stream FAR *strm));
+ZEXTERN int ZEXPORT inflateBack9Init_ OF((z_stream FAR *strm,
+                                         unsigned char FAR *window,
+                                         const char *version,
+                                         int stream_size));
+#define inflateBack9Init(strm, window) \
+        inflateBack9Init_((strm), (window), \
+        ZLIB_VERSION, sizeof(z_stream))
--- a/contrib/infback9/inffix9.h
+++ b/contrib/infback9/inffix9.h
@@ -0,0 +1,107 @@
+    /* inffix9.h -- table for decoding deflate64 fixed codes
+     * Generated automatically by makefixed9().
+     */
+
+    /* WARNING: this file should *not* be used by applications.
+       It is part of the implementation of this library and is
+       subject to change. Applications should only use zlib.h.
+     */
+
+    static const code lenfix[512] = {
+        {96,7,0},{0,8,80},{0,8,16},{132,8,115},{130,7,31},{0,8,112},
+        {0,8,48},{0,9,192},{128,7,10},{0,8,96},{0,8,32},{0,9,160},
+        {0,8,0},{0,8,128},{0,8,64},{0,9,224},{128,7,6},{0,8,88},
+        {0,8,24},{0,9,144},{131,7,59},{0,8,120},{0,8,56},{0,9,208},
+        {129,7,17},{0,8,104},{0,8,40},{0,9,176},{0,8,8},{0,8,136},
+        {0,8,72},{0,9,240},{128,7,4},{0,8,84},{0,8,20},{133,8,227},
+        {131,7,43},{0,8,116},{0,8,52},{0,9,200},{129,7,13},{0,8,100},
+        {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},
+        {128,7,8},{0,8,92},{0,8,28},{0,9,152},{132,7,83},{0,8,124},
+        {0,8,60},{0,9,216},{130,7,23},{0,8,108},{0,8,44},{0,9,184},
+        {0,8,12},{0,8,140},{0,8,76},{0,9,248},{128,7,3},{0,8,82},
+        {0,8,18},{133,8,163},{131,7,35},{0,8,114},{0,8,50},{0,9,196},
+        {129,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},{0,8,130},
+        {0,8,66},{0,9,228},{128,7,7},{0,8,90},{0,8,26},{0,9,148},
+        {132,7,67},{0,8,122},{0,8,58},{0,9,212},{130,7,19},{0,8,106},
+        {0,8,42},{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},
+        {128,7,5},{0,8,86},{0,8,22},{65,8,0},{131,7,51},{0,8,118},
+        {0,8,54},{0,9,204},{129,7,15},{0,8,102},{0,8,38},{0,9,172},
+        {0,8,6},{0,8,134},{0,8,70},{0,9,236},{128,7,9},{0,8,94},
+        {0,8,30},{0,9,156},{132,7,99},{0,8,126},{0,8,62},{0,9,220},
+        {130,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
+        {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{133,8,131},
+        {130,7,31},{0,8,113},{0,8,49},{0,9,194},{128,7,10},{0,8,97},
+        {0,8,33},{0,9,162},{0,8,1},{0,8,129},{0,8,65},{0,9,226},
+        {128,7,6},{0,8,89},{0,8,25},{0,9,146},{131,7,59},{0,8,121},
+        {0,8,57},{0,9,210},{129,7,17},{0,8,105},{0,8,41},{0,9,178},
+        {0,8,9},{0,8,137},{0,8,73},{0,9,242},{128,7,4},{0,8,85},
+        {0,8,21},{144,8,3},{131,7,43},{0,8,117},{0,8,53},{0,9,202},
+        {129,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},
+        {0,8,69},{0,9,234},{128,7,8},{0,8,93},{0,8,29},{0,9,154},
+        {132,7,83},{0,8,125},{0,8,61},{0,9,218},{130,7,23},{0,8,109},
+        {0,8,45},{0,9,186},{0,8,13},{0,8,141},{0,8,77},{0,9,250},
+        {128,7,3},{0,8,83},{0,8,19},{133,8,195},{131,7,35},{0,8,115},
+        {0,8,51},{0,9,198},{129,7,11},{0,8,99},{0,8,35},{0,9,166},
+        {0,8,3},{0,8,131},{0,8,67},{0,9,230},{128,7,7},{0,8,91},
+        {0,8,27},{0,9,150},{132,7,67},{0,8,123},{0,8,59},{0,9,214},
+        {130,7,19},{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},
+        {0,8,75},{0,9,246},{128,7,5},{0,8,87},{0,8,23},{77,8,0},
+        {131,7,51},{0,8,119},{0,8,55},{0,9,206},{129,7,15},{0,8,103},
+        {0,8,39},{0,9,174},{0,8,7},{0,8,135},{0,8,71},{0,9,238},
+        {128,7,9},{0,8,95},{0,8,31},{0,9,158},{132,7,99},{0,8,127},
+        {0,8,63},{0,9,222},{130,7,27},{0,8,111},{0,8,47},{0,9,190},
+        {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},
+        {0,8,16},{132,8,115},{130,7,31},{0,8,112},{0,8,48},{0,9,193},
+        {128,7,10},{0,8,96},{0,8,32},{0,9,161},{0,8,0},{0,8,128},
+        {0,8,64},{0,9,225},{128,7,6},{0,8,88},{0,8,24},{0,9,145},
+        {131,7,59},{0,8,120},{0,8,56},{0,9,209},{129,7,17},{0,8,104},
+        {0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},{0,9,241},
+        {128,7,4},{0,8,84},{0,8,20},{133,8,227},{131,7,43},{0,8,116},
+        {0,8,52},{0,9,201},{129,7,13},{0,8,100},{0,8,36},{0,9,169},
+        {0,8,4},{0,8,132},{0,8,68},{0,9,233},{128,7,8},{0,8,92},
+        {0,8,28},{0,9,153},{132,7,83},{0,8,124},{0,8,60},{0,9,217},
+        {130,7,23},{0,8,108},{0,8,44},{0,9,185},{0,8,12},{0,8,140},
+        {0,8,76},{0,9,249},{128,7,3},{0,8,82},{0,8,18},{133,8,163},
+        {131,7,35},{0,8,114},{0,8,50},{0,9,197},{129,7,11},{0,8,98},
+        {0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
+        {128,7,7},{0,8,90},{0,8,26},{0,9,149},{132,7,67},{0,8,122},
+        {0,8,58},{0,9,213},{130,7,19},{0,8,106},{0,8,42},{0,9,181},
+        {0,8,10},{0,8,138},{0,8,74},{0,9,245},{128,7,5},{0,8,86},
+        {0,8,22},{65,8,0},{131,7,51},{0,8,118},{0,8,54},{0,9,205},
+        {129,7,15},{0,8,102},{0,8,38},{0,9,173},{0,8,6},{0,8,134},
+        {0,8,70},{0,9,237},{128,7,9},{0,8,94},{0,8,30},{0,9,157},
+        {132,7,99},{0,8,126},{0,8,62},{0,9,221},{130,7,27},{0,8,110},
+        {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},
+        {96,7,0},{0,8,81},{0,8,17},{133,8,131},{130,7,31},{0,8,113},
+        {0,8,49},{0,9,195},{128,7,10},{0,8,97},{0,8,33},{0,9,163},
+        {0,8,1},{0,8,129},{0,8,65},{0,9,227},{128,7,6},{0,8,89},
+        {0,8,25},{0,9,147},{131,7,59},{0,8,121},{0,8,57},{0,9,211},
+        {129,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},{0,8,137},
+        {0,8,73},{0,9,243},{128,7,4},{0,8,85},{0,8,21},{144,8,3},
+        {131,7,43},{0,8,117},{0,8,53},{0,9,203},{129,7,13},{0,8,101},
+        {0,8,37},{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},
+        {128,7,8},{0,8,93},{0,8,29},{0,9,155},{132,7,83},{0,8,125},
+        {0,8,61},{0,9,219},{130,7,23},{0,8,109},{0,8,45},{0,9,187},
+        {0,8,13},{0,8,141},{0,8,77},{0,9,251},{128,7,3},{0,8,83},
+        {0,8,19},{133,8,195},{131,7,35},{0,8,115},{0,8,51},{0,9,199},
+        {129,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
+        {0,8,67},{0,9,231},{128,7,7},{0,8,91},{0,8,27},{0,9,151},
+        {132,7,67},{0,8,123},{0,8,59},{0,9,215},{130,7,19},{0,8,107},
+        {0,8,43},{0,9,183},{0,8,11},{0,8,139},{0,8,75},{0,9,247},
+        {128,7,5},{0,8,87},{0,8,23},{77,8,0},{131,7,51},{0,8,119},
+        {0,8,55},{0,9,207},{129,7,15},{0,8,103},{0,8,39},{0,9,175},
+        {0,8,7},{0,8,135},{0,8,71},{0,9,239},{128,7,9},{0,8,95},
+        {0,8,31},{0,9,159},{132,7,99},{0,8,127},{0,8,63},{0,9,223},
+        {130,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},
+        {0,8,79},{0,9,255}
+    };
+
+    static const code distfix[32] = {
+        {128,5,1},{135,5,257},{131,5,17},{139,5,4097},{129,5,5},
+        {137,5,1025},{133,5,65},{141,5,16385},{128,5,3},{136,5,513},
+        {132,5,33},{140,5,8193},{130,5,9},{138,5,2049},{134,5,129},
+        {142,5,32769},{128,5,2},{135,5,385},{131,5,25},{139,5,6145},
+        {129,5,7},{137,5,1537},{133,5,97},{141,5,24577},{128,5,4},
+        {136,5,769},{132,5,49},{140,5,12289},{130,5,13},{138,5,3073},
+        {134,5,193},{142,5,49153}
+    };
--- a/contrib/infback9/inflate9.h
+++ b/contrib/infback9/inflate9.h
@@ -0,0 +1,47 @@
+/* inflate9.h -- internal inflate state definition
+ * Copyright (C) 1995-2003 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* Possible inflate modes between inflate() calls */
+typedef enum {
+        TYPE,       /* i: waiting for type bits, including last-flag bit */
+        STORED,     /* i: waiting for stored size (length and complement) */
+        TABLE,      /* i: waiting for dynamic block table lengths */
+            LEN,        /* i: waiting for length/lit code */
+    DONE,       /* finished check, done -- remain here until reset */
+    BAD         /* got a data error -- remain here until reset */
+} inflate_mode;
+
+/*
+    State transitions between above modes -
+
+    (most modes can go to the BAD mode -- not shown for clarity)
+
+    Read deflate blocks:
+            TYPE -> STORED or TABLE or LEN or DONE
+            STORED -> TYPE
+            TABLE -> LENLENS -> CODELENS -> LEN
+    Read deflate codes:
+                LEN -> LEN or TYPE
+ */
+
+/* state maintained between inflate() calls.  Approximately 7K bytes. */
+struct inflate_state {
+        /* sliding window */
+    unsigned char FAR *window;  /* allocated sliding window, if needed */
+        /* dynamic table building */
+    unsigned ncode;             /* number of code length code lengths */
+    unsigned nlen;              /* number of length code lengths */
+    unsigned ndist;             /* number of distance code lengths */
+    unsigned have;              /* number of code lengths in lens[] */
+    code FAR *next;             /* next available space in codes[] */
+    unsigned short lens[320];   /* temporary storage for code lengths */
+    unsigned short work[288];   /* work area for code table building */
+    code codes[ENOUGH];         /* space for code tables */
+};
--- a/contrib/infback9/inftree9.c
+++ b/contrib/infback9/inftree9.c
@@ -0,0 +1,323 @@
+/* inftree9.c -- generate Huffman trees for efficient decoding
+ * Copyright (C) 1995-2003 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zutil.h"
+#include "inftree9.h"
+
+#define MAXBITS 15
+
+const char inflate9_copyright[] =
+   " inflate9 1.2.1.1 Copyright 1995-2003 Mark Adler ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+
+/*
+   Build a set of tables to decode the provided canonical Huffman code.
+   The code lengths are lens[0..codes-1].  The result starts at *table,
+   whose indices are 0..2^bits-1.  work is a writable array of at least
+   lens shorts, which is used as a work area.  type is the type of code
+   to be generated, CODES, LENS, or DISTS.  On return, zero is success,
+   -1 is an invalid code, and +1 means that ENOUGH isn't enough.  table
+   on return points to the next available entry's address.  bits is the
+   requested root table index bits, and on return it is the actual root
+   table index bits.  It will differ if the request is greater than the
+   longest code or if it is less than the shortest code.
+ */
+int inflate_table9(type, lens, codes, table, bits, work)
+codetype type;
+unsigned short FAR *lens;
+unsigned codes;
+code FAR * FAR *table;
+unsigned FAR *bits;
+unsigned short FAR *work;
+{
+    unsigned len;               /* a code's length in bits */
+    unsigned sym;               /* index of code symbols */
+    unsigned min, max;          /* minimum and maximum code lengths */
+    unsigned root;              /* number of index bits for root table */
+    unsigned curr;              /* number of index bits for current table */
+    unsigned drop;              /* code bits to drop for sub-table */
+    int left;                   /* number of prefix codes available */
+    unsigned used;              /* code entries in table used */
+    unsigned huff;              /* Huffman code */
+    unsigned incr;              /* for incrementing code, index */
+    unsigned fill;              /* index for replicating entries */
+    unsigned low;               /* low bits for current root entry */
+    unsigned mask;              /* mask for low root bits */
+    code this;                  /* table entry for duplication */
+    code FAR *next;             /* next available space in table */
+    const unsigned short FAR *base;     /* base value table to use */
+    const unsigned short FAR *extra;    /* extra bits table to use */
+    int end;                    /* use base and extra for symbol > end */
+    unsigned short count[MAXBITS+1];    /* number of codes of each length */
+    unsigned short offs[MAXBITS+1];     /* offsets in table for each length */
+    static const unsigned short lbase[31] = { /* Length codes 257..285 base */
+        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17,
+        19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115,
+        131, 163, 195, 227, 3, 0, 0};
+    static const unsigned short lext[31] = { /* Length codes 257..285 extra */
+        128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129,
+        130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132,
+        133, 133, 133, 133, 144, 202, 196};
+    static const unsigned short dbase[32] = { /* Distance codes 0..31 base */
+        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49,
+        65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073,
+        4097, 6145, 8193, 12289, 16385, 24577, 32769, 49153};
+    static const unsigned short dext[32] = { /* Distance codes 0..31 extra */
+        128, 128, 128, 128, 129, 129, 130, 130, 131, 131, 132, 132,
+        133, 133, 134, 134, 135, 135, 136, 136, 137, 137, 138, 138,
+        139, 139, 140, 140, 141, 141, 142, 142};
+
+    /*
+       Process a set of code lengths to create a canonical Huffman code.  The
+       code lengths are lens[0..codes-1].  Each length corresponds to the
+       symbols 0..codes-1.  The Huffman code is generated by first sorting the
+       symbols by length from short to long, and retaining the symbol order
+       for codes with equal lengths.  Then the code starts with all zero bits
+       for the first code of the shortest length, and the codes are integer
+       increments for the same length, and zeros are appended as the length
+       increases.  For the deflate format, these bits are stored backwards
+       from their more natural integer increment ordering, and so when the
+       decoding tables are built in the large loop below, the integer codes
+       are incremented backwards.
+
+       This routine assumes, but does not check, that all of the entries in
+       lens[] are in the range 0..MAXBITS.  The caller must assure this.
+       1..MAXBITS is interpreted as that code length.  zero means that that
+       symbol does not occur in this code.
+
+       The codes are sorted by computing a count of codes for each length,
+       creating from that a table of starting indices for each length in the
+       sorted table, and then entering the symbols in order in the sorted
+       table.  The sorted table is work[], with that space being provided by
+       the caller.
+
+       The length counts are used for other purposes as well, i.e. finding
+       the minimum and maximum length codes, determining if there are any
+       codes at all, checking for a valid set of lengths, and looking ahead
+       at length counts to determine sub-table sizes when building the
+       decoding tables.
+     */
+
+    /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
+    for (len = 0; len <= MAXBITS; len++)
+        count[len] = 0;
+    for (sym = 0; sym < codes; sym++)
+        count[lens[sym]]++;
+
+    /* bound code lengths, force root to be within code lengths */
+    root = *bits;
+    for (max = MAXBITS; max >= 1; max--)
+        if (count[max] != 0) break;
+    if (root > max) root = max;
+    if (max == 0) return -1;            /* no codes! */
+    for (min = 1; min <= MAXBITS; min++)
+        if (count[min] != 0) break;
+    if (root < min) root = min;
+
+    /* check for an over-subscribed or incomplete set of lengths */
+    left = 1;
+    for (len = 1; len <= MAXBITS; len++) {
+        left <<= 1;
+        left -= count[len];
+        if (left < 0) return -1;        /* over-subscribed */
+    }
+    if (left > 0 && (type == CODES || (codes - count[0] != 1)))
+        return -1;                      /* incomplete set */
+
+    /* generate offsets into symbol table for each length for sorting */
+    offs[1] = 0;
+    for (len = 1; len < MAXBITS; len++)
+        offs[len + 1] = offs[len] + count[len];
+
+    /* sort symbols by length, by symbol order within each length */
+    for (sym = 0; sym < codes; sym++)
+        if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
+
+    /*
+       Create and fill in decoding tables.  In this loop, the table being
+       filled is at next and has curr index bits.  The code being used is huff
+       with length len.  That code is converted to an index by dropping drop
+       bits off of the bottom.  For codes where len is less than drop + curr,
+       those top drop + curr - len bits are incremented through all values to
+       fill the table with replicated entries.
+
+       root is the number of index bits for the root table.  When len exceeds
+       root, sub-tables are created pointed to by the root entry with an index
+       of the low root bits of huff.  This is saved in low to check for when a
+       new sub-table should be started.  drop is zero when the root table is
+       being filled, and drop is root when sub-tables are being filled.
+
+       When a new sub-table is needed, it is necessary to look ahead in the
+       code lengths to determine what size sub-table is needed.  The length
+       counts are used for this, and so count[] is decremented as codes are
+       entered in the tables.
+
+       used keeps track of how many table entries have been allocated from the
+       provided *table space.  It is checked when a LENS table is being made
+       against the space in *table, ENOUGH, minus the maximum space needed by
+       the worst case distance code, MAXD.  This should never happen, but the
+       sufficiency of ENOUGH has not been proven exhaustively, hence the check.
+       This assumes that when type == LENS, bits == 9.
+
+       sym increments through all symbols, and the loop terminates when
+       all codes of length max, i.e. all codes, have been processed.  This
+       routine permits incomplete codes, so another loop after this one fills
+       in the rest of the decoding tables with invalid code markers.
+     */
+
+    /* set up for code type */
+    switch (type) {
+    case CODES:
+        base = extra = work;    /* dummy value--not used */
+        end = 19;
+        break;
+    case LENS:
+        base = lbase;
+        base -= 257;
+        extra = lext;
+        extra -= 257;
+        end = 256;
+        break;
+    default:            /* DISTS */
+        base = dbase;
+        extra = dext;
+        end = -1;
+    }
+
+    /* initialize state for loop */
+    huff = 0;                   /* starting code */
+    sym = 0;                    /* starting code symbol */
+    len = min;                  /* starting code length */
+    next = *table;              /* current table to fill in */
+    curr = root;                /* current table index bits */
+    drop = 0;                   /* current bits to drop from code for index */
+    low = (unsigned)(-1);       /* trigger new sub-table when len > root */
+    used = 1U << root;          /* use root table entries */
+    mask = used - 1;            /* mask for comparing low */
+
+    /* check available table space */
+    if (type == LENS && used >= ENOUGH - MAXD)
+        return 1;
+
+    /* process all codes and make table entries */
+    for (;;) {
+        /* create table entry */
+        this.bits = (unsigned char)(len - drop);
+        if ((int)(work[sym]) < end) {
+            this.op = (unsigned char)0;
+            this.val = work[sym];
+        }
+        else if ((int)(work[sym]) > end) {
+            this.op = (unsigned char)(extra[work[sym]]);
+            this.val = base[work[sym]];
+        }
+        else {
+            this.op = (unsigned char)(32 + 64);         /* end of block */
+            this.val = 0;
+        }
+
+        /* replicate for those indices with low len bits equal to huff */
+        incr = 1U << (len - drop);
+        fill = 1U << curr;
+        do {
+            fill -= incr;
+            next[(huff >> drop) + fill] = this;
+        } while (fill != 0);
+
+        /* backwards increment the len-bit code huff */
+        incr = 1U << (len - 1);
+        while (huff & incr)
+            incr >>= 1;
+        if (incr != 0) {
+            huff &= incr - 1;
+            huff += incr;
+        }
+        else
+            huff = 0;
+
+        /* go to next symbol, update count, len */
+        sym++;
+        if (--(count[len]) == 0) {
+            if (len == max) break;
+            len = lens[work[sym]];
+        }
+
+        /* create new sub-table if needed */
+        if (len > root && (huff & mask) != low) {
+            /* if first time, transition to sub-tables */
+            if (drop == 0)
+                drop = root;
+
+            /* increment past last table */
+            next += 1U << curr;
+
+            /* determine length of next table */
+            curr = len - drop;
+            left = (int)(1 << curr);
+            while (curr + drop < max) {
+                left -= count[curr + drop];
+                if (left <= 0) break;
+                curr++;
+                left <<= 1;
+            }
+
+            /* check for enough space */
+            used += 1U << curr;
+            if (type == LENS && used >= ENOUGH - MAXD)
+                return 1;
+
+            /* point entry in root table to sub-table */
+            low = huff & mask;
+            (*table)[low].op = (unsigned char)curr;
+            (*table)[low].bits = (unsigned char)root;
+            (*table)[low].val = (unsigned short)(next - *table);
+        }
+    }
+
+    /*
+       Fill in rest of table for incomplete codes.  This loop is similar to the
+       loop above in incrementing huff for table indices.  It is assumed that
+       len is equal to curr + drop, so there is no loop needed to increment
+       through high index bits.  When the current sub-table is filled, the loop
+       drops back to the root table to fill in any remaining entries there.
+     */
+    this.op = (unsigned char)64;                /* invalid code marker */
+    this.bits = (unsigned char)(len - drop);
+    this.val = (unsigned short)0;
+    while (huff != 0) {
+        /* when done with sub-table, drop back to root table */
+        if (drop != 0 && (huff & mask) != low) {
+            drop = 0;
+            len = root;
+            next = *table;
+            curr = root;
+            this.bits = (unsigned char)len;
+        }
+
+        /* put invalid code marker in table */
+        next[huff >> drop] = this;
+
+        /* backwards increment the len-bit code huff */
+        incr = 1U << (len - 1);
+        while (huff & incr)
+            incr >>= 1;
+        if (incr != 0) {
+            huff &= incr - 1;
+            huff += incr;
+        }
+        else
+            huff = 0;
+    }
+
+    /* set return parameters */
+    *table += used;
+    *bits = root;
+    return 0;
+}
--- a/contrib/infback9/inftree9.h
+++ b/contrib/infback9/inftree9.h
@@ -0,0 +1,55 @@
+/* inftree9.h -- header to use inftree9.c
+ * Copyright (C) 1995-2003 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* Structure for decoding tables.  Each entry provides either the
+   information needed to do the operation requested by the code that
+   indexed that table entry, or it provides a pointer to another
+   table that indexes more bits of the code.  op indicates whether
+   the entry is a pointer to another table, a literal, a length or
+   distance, an end-of-block, or an invalid code.  For a table
+   pointer, the low four bits of op is the number of index bits of
+   that table.  For a length or distance, the low four bits of op
+   is the number of extra bits to get after the code.  bits is
+   the number of bits in this code or part of the code to drop off
+   of the bit buffer.  val is the actual byte to output in the case
+   of a literal, the base length or distance, or the offset from
+   the current table to the next table.  Each entry is four bytes. */
+typedef struct {
+    unsigned char op;           /* operation, extra bits, table bits */
+    unsigned char bits;         /* bits in this part of the code */
+    unsigned short val;         /* offset in table or code value */
+} code;
+
+/* op values as set by inflate_table():
+    00000000 - literal
+    0000tttt - table link, tttt != 0 is the number of table index bits
+    100eeeee - length or distance, eeee is the number of extra bits
+    01100000 - end of block
+    01000000 - invalid code
+ */
+
+/* Maximum size of dynamic tree.  The maximum found in a long but non-
+   exhaustive search was 1004 code structures (850 for length/literals
+   and 154 for distances, the latter actually the result of an
+   exhaustive search).  The true maximum is not known, but the value
+   below is more than safe. */
+#define ENOUGH 1440
+#define MAXD 154
+
+/* Type of code to build for inftable() */
+typedef enum {
+    CODES,
+    LENS,
+    DISTS
+} codetype;
+
+extern int inflate_table9 OF((codetype type, unsigned short FAR *lens,
+                             unsigned codes, code FAR * FAR *table,
+                             unsigned FAR *bits, unsigned short FAR *work));
--- a/contrib/inflate86/inffast.S
+++ b/contrib/inflate86/inffast.S
@@ -61,7 +61,7 @@
 */
 #if ! defined( GAS_COFF ) && ! defined( GAS_ELF )

-#if defined( __CYGWIN__ )
+#if defined( WIN32 ) || defined( __CYGWIN__ )
 #define GAS_COFF /* windows object format */
 #else
 #define GAS_ELF
@@ -151,14 +151,14 @@
 */
 #define mode_state     0   /* state->mode */
 #define wsize_state    32  /* state->wsize */
-#define write_state    36  /* state->write */
-#define window_state   40  /* state->window */
-#define hold_state     44  /* state->hold */
-#define bits_state     48  /* state->bits */
-#define lencode_state  64  /* state->lencode */
-#define distcode_state 68  /* state->distcode */
-#define lenbits_state  72  /* state->lenbits */
-#define distbits_state 76  /* state->distbits */
+#define write_state    40  /* state->write */
+#define window_state   44  /* state->window */
+#define hold_state     48  /* state->hold */
+#define bits_state     52  /* state->bits */
+#define lencode_state  68  /* state->lencode */
+#define distcode_state 72  /* state->distcode */
+#define lenbits_state  76  /* state->lenbits */
+#define distbits_state 80  /* state->distbits */

 /*
 * inflate_fast's activation record
--- a/contrib/iostream/zfstream.cpp
+++ b/contrib/iostream/zfstream.cpp
@@ -1,5 +1,4 @@

-#include <memory.h>
 #include "zfstream.h"

 gzfilebuf::gzfilebuf() :
@@ -17,15 +16,13 @@ gzfilebuf::~gzfilebuf() {
 }

 gzfilebuf *gzfilebuf::open( const char *name,
-			    int io_mode ) {
+                            int io_mode ) {

  if ( is_open() )
    return NULL;

  char char_mode[10];
-  char *p;
-  memset(char_mode,'\0',10);
-  p = char_mode;
+  char *p = char_mode;

  if ( io_mode & ios::in ) {
    mode = ios::in;
@@ -48,6 +45,9 @@ gzfilebuf *gzfilebuf::open( const char *name,
    *p++ = '9';
  }

+  // Put the end-of-string indicator
+  *p = '\0';
+
  if ( (file = gzopen(name, char_mode)) == NULL )
    return NULL;

@@ -58,15 +58,13 @@ gzfilebuf *gzfilebuf::open( const char *name,
 }

 gzfilebuf *gzfilebuf::attach( int file_descriptor,
-			      int io_mode ) {
+                              int io_mode ) {

  if ( is_open() )
    return NULL;

  char char_mode[10];
-  char *p;
-  memset(char_mode,'\0',10);
-  p = char_mode;
+  char *p = char_mode;

  if ( io_mode & ios::in ) {
    mode = ios::in;
@@ -89,6 +87,9 @@ gzfilebuf *gzfilebuf::attach( int file_descriptor,
    *p++ = '9';
  }

+  // Put the end-of-string indicator
+  *p = '\0';
+
  if ( (file = gzdopen(file_descriptor, char_mode)) == NULL )
    return NULL;

@@ -112,13 +113,13 @@ gzfilebuf *gzfilebuf::close() {

 }

-int gzfilebuf::setcompressionlevel( short comp_level ) {
+int gzfilebuf::setcompressionlevel( int comp_level ) {

  return gzsetparams(file, comp_level, -2);

 }

-int gzfilebuf::setcompressionstrategy( short comp_strategy ) {
+int gzfilebuf::setcompressionstrategy( int comp_strategy ) {

  return gzsetparams(file, -2, comp_strategy);

@@ -151,7 +152,7 @@ int gzfilebuf::underflow() {

    if ( out_waiting() ) {
      if ( flushbuf() == EOF )
-	return EOF;
+        return EOF;
    }

  }
@@ -180,11 +181,11 @@ int gzfilebuf::overflow( int c ) {
    setg(0,0,0);
  } else {
    if (in_avail()) {
-	return EOF;
+        return EOF;
    }
    if (out_waiting()) {
      if (flushbuf() == EOF)
-	return EOF;
+        return EOF;
    }
  }

@@ -282,10 +283,9 @@ void gzfilestream_common::close() {

 }

-gzfilebuf *gzfilestream_common::rdbuf() {
-
+gzfilebuf *gzfilestream_common::rdbuf()
+{
  return &buffer;
-
 }

 gzifstream::gzifstream() :
--- a/contrib/iostream/zfstream.h
+++ b/contrib/iostream/zfstream.h
@@ -1,6 +1,6 @@

-#ifndef _zfstream_h
-#define _zfstream_h
+#ifndef zfstream_h
+#define zfstream_h

 #include <fstream.h>
 #include "zlib.h"
@@ -16,8 +16,8 @@ public:
  gzfilebuf *attach( int file_descriptor, int io_mode );
  gzfilebuf *close();

-  int setcompressionlevel( short comp_level );
-  int setcompressionstrategy( short comp_strategy );
+  int setcompressionlevel( int comp_level );
+  int setcompressionstrategy( int comp_strategy );

  inline int is_open() const { return (file !=NULL); }

@@ -98,18 +98,19 @@ private:
  T val;
 };

-template<class T> gzofstream &operator<<(gzofstream &s,
-					 const gzomanip<T> &m) {
+template<class T> gzofstream &operator<<(gzofstream &s, const gzomanip<T> &m)
+{
  return (*m.func)(s, m.val);
-  
 }

-inline gzofstream &setcompressionlevel( gzofstream &s, int l ) {
+inline gzofstream &setcompressionlevel( gzofstream &s, int l )
+{
  (s.rdbuf())->setcompressionlevel(l);
  return s;
 }

-inline gzofstream &setcompressionstrategy( gzofstream &s, int l ) {
+inline gzofstream &setcompressionstrategy( gzofstream &s, int l )
+{
  (s.rdbuf())->setcompressionstrategy(l);
  return s;
 }
@@ -125,18 +126,3 @@ inline gzomanip<int> setcompressionstrategy(int l)
 }

 #endif
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
--- a/contrib/iostream2/zstream_test.cpp
+++ b/contrib/iostream2/zstream_test.cpp
@@ -4,9 +4,9 @@
 #include <iomanip.h>

 void main() {
-	char h[256] = "Hello";
-	char* g = "Goodbye";
-	ozstream out("temp.gz");
+    char h[256] = "Hello";
+    char* g = "Goodbye";
+    ozstream out("temp.gz");
    out < "This works well" < h < g;
    out.close();

--- a/contrib/iostream3/README
+++ b/contrib/iostream3/README
@@ -0,0 +1,35 @@
+These classes provide a C++ stream interface to the zlib library. It allows you
+to do things like:
+
+  gzofstream outf("blah.gz");
+  outf << "These go into the gzip file " << 123 << endl;
+
+It does this by deriving a specialized stream buffer for gzipped files, which is
+the way Stroustrup would have done it. :->
+
+The gzifstream and gzofstream classes were originally written by Kevin Ruland
+and made available in the zlib contrib/iostream directory. The older version still
+compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of
+this version.
+
+The new classes are as standard-compliant as possible, closely following the
+approach of the standard library's fstream classes. It compiles under gcc versions
+3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard
+library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs
+from the previous one in the following respects:
+- added showmanyc
+- added setbuf, with support for unbuffered output via setbuf(0,0)
+- a few bug fixes of stream behavior
+- gzipped output file opened with default compression level instead of maximum level
+- setcompressionlevel()/strategy() members replaced by single setcompression()
+
+The code is provided "as is", with the permission to use, copy, modify, distribute
+and sell it for any purpose without fee.
+
+Ludwig Schwardt
+<schwardt@sun.ac.za>
+
+DSP Lab
+Electrical & Electronic Engineering Department
+University of Stellenbosch
+South Africa
--- a/contrib/iostream3/TODO
+++ b/contrib/iostream3/TODO
@@ -0,0 +1,17 @@
+Possible upgrades to gzfilebuf:
+
+- The ability to do putback (e.g. putbackfail)
+
+- The ability to seek (zlib supports this, but could be slow/tricky)
+
+- Simultaneous read/write access (does it make sense?)
+
+- Support for ios_base::ate open mode
+
+- Locale support?
+
+- Check public interface to see which calls give problems
+  (due to dependence on library internals)
+
+- Override operator<<(ostream&, gzfilebuf*) to allow direct copying
+  of stream buffer to stream ( i.e. os << is.rdbuf(); )
--- a/contrib/iostream3/test.cc
+++ b/contrib/iostream3/test.cc
@@ -0,0 +1,50 @@
+/*
+ * Test program for gzifstream and gzofstream
+ *
+ * by Ludwig Schwardt <schwardt@sun.ac.za>
+ * original version by Kevin Ruland <kevin@rodin.wustl.edu>
+ */
+
+#include "zfstream.h"
+#include <iostream>      // for cout
+
+int main() {
+
+  gzofstream outf;
+  gzifstream inf;
+  char buf[80];
+
+  outf.open("test1.txt.gz");
+  outf << "The quick brown fox sidestepped the lazy canine\n"
+       << 1.3 << "\nPlan " << 9 << std::endl;
+  outf.close();
+  std::cout << "Wrote the following message to 'test1.txt.gz' (check with zcat or zless):\n"
+            << "The quick brown fox sidestepped the lazy canine\n"
+            << 1.3 << "\nPlan " << 9 << std::endl;
+
+  std::cout << "\nReading 'test1.txt.gz' (buffered) produces:\n";
+  inf.open("test1.txt.gz");
+  while (inf.getline(buf,80,'\n')) {
+    std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
+  }
+  inf.close();
+
+  outf.rdbuf()->pubsetbuf(0,0);
+  outf.open("test2.txt.gz");
+  outf << setcompression(Z_NO_COMPRESSION)
+       << "The quick brown fox sidestepped the lazy canine\n"
+       << 1.3 << "\nPlan " << 9 << std::endl;
+  outf.close();
+  std::cout << "\nWrote the same message to 'test2.txt.gz' in uncompressed form";
+
+  std::cout << "\nReading 'test2.txt.gz' (unbuffered) produces:\n";
+  inf.rdbuf()->pubsetbuf(0,0);
+  inf.open("test2.txt.gz");
+  while (inf.getline(buf,80,'\n')) {
+    std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
+  }
+  inf.close();
+
+  return 0;
+
+}
--- a/contrib/iostream3/zfstream.cc
+++ b/contrib/iostream3/zfstream.cc
@@ -0,0 +1,479 @@
+/*
+ * A C++ I/O streams interface to the zlib gz* functions
+ *
+ * by Ludwig Schwardt <schwardt@sun.ac.za>
+ * original version by Kevin Ruland <kevin@rodin.wustl.edu>
+ *
+ * This version is standard-compliant and compatible with gcc 3.x.
+ */
+
+#include "zfstream.h"
+#include <cstring>          // for strcpy, strcat, strlen (mode strings)
+#include <cstdio>           // for BUFSIZ
+
+// Internal buffer sizes (default and "unbuffered" versions)
+#define BIGBUFSIZE BUFSIZ
+#define SMALLBUFSIZE 1
+
+/*****************************************************************************/
+
+// Default constructor
+gzfilebuf::gzfilebuf()
+: file(NULL), io_mode(std::ios_base::openmode(0)), own_fd(false),
+  buffer(NULL), buffer_size(BIGBUFSIZE), own_buffer(true)
+{
+  // No buffers to start with
+  this->disable_buffer();
+}
+
+// Destructor
+gzfilebuf::~gzfilebuf()
+{
+  // Sync output buffer and close only if responsible for file
+  // (i.e. attached streams should be left open at this stage)
+  this->sync();
+  if (own_fd)
+    this->close();
+  // Make sure internal buffer is deallocated
+  this->disable_buffer();
+}
+
+// Set compression level and strategy
+int
+gzfilebuf::setcompression(int comp_level,
+                          int comp_strategy)
+{
+  return gzsetparams(file, comp_level, comp_strategy);
+}
+
+// Open gzipped file
+gzfilebuf*
+gzfilebuf::open(const char *name,
+                std::ios_base::openmode mode)
+{
+  // Fail if file already open
+  if (this->is_open())
+    return NULL;
+  // Don't support simultaneous read/write access (yet)
+  if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
+    return NULL;
+
+  // Build mode string for gzopen and check it [27.8.1.3.2]
+  char char_mode[6] = "\0\0\0\0\0";
+  if (!this->open_mode(mode, char_mode))
+    return NULL;
+
+  // Attempt to open file
+  if ((file = gzopen(name, char_mode)) == NULL)
+    return NULL;
+
+  // On success, allocate internal buffer and set flags
+  this->enable_buffer();
+  io_mode = mode;
+  own_fd = true;
+  return this;
+}
+
+// Attach to gzipped file
+gzfilebuf*
+gzfilebuf::attach(int fd,
+                  std::ios_base::openmode mode)
+{
+  // Fail if file already open
+  if (this->is_open())
+    return NULL;
+  // Don't support simultaneous read/write access (yet)
+  if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
+    return NULL;
+
+  // Build mode string for gzdopen and check it [27.8.1.3.2]
+  char char_mode[6] = "\0\0\0\0\0";
+  if (!this->open_mode(mode, char_mode))
+    return NULL;
+
+  // Attempt to attach to file
+  if ((file = gzdopen(fd, char_mode)) == NULL)
+    return NULL;
+
+  // On success, allocate internal buffer and set flags
+  this->enable_buffer();
+  io_mode = mode;
+  own_fd = false;
+  return this;
+}
+
+// Close gzipped file
+gzfilebuf*
+gzfilebuf::close()
+{
+  // Fail immediately if no file is open
+  if (!this->is_open())
+    return NULL;
+  // Assume success
+  gzfilebuf* retval = this;
+  // Attempt to sync and close gzipped file
+  if (this->sync() == -1)
+    retval = NULL;
+  if (gzclose(file) < 0)
+    retval = NULL;
+  // File is now gone anyway (postcondition [27.8.1.3.8])
+  file = NULL;
+  own_fd = false;
+  // Destroy internal buffer if it exists
+  this->disable_buffer();
+  return retval;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+// Convert int open mode to mode string
+bool
+gzfilebuf::open_mode(std::ios_base::openmode mode,
+                     char* c_mode) const
+{
+  bool testb = mode & std::ios_base::binary;
+  bool testi = mode & std::ios_base::in;
+  bool testo = mode & std::ios_base::out;
+  bool testt = mode & std::ios_base::trunc;
+  bool testa = mode & std::ios_base::app;
+
+  // Check for valid flag combinations - see [27.8.1.3.2] (Table 92)
+  // Original zfstream hardcoded the compression level to maximum here...
+  // Double the time for less than 1% size improvement seems
+  // excessive though - keeping it at the default level
+  // To change back, just append "9" to the next three mode strings
+  if (!testi && testo && !testt && !testa)
+    strcpy(c_mode, "w");
+  if (!testi && testo && !testt && testa)
+    strcpy(c_mode, "a");
+  if (!testi && testo && testt && !testa)
+    strcpy(c_mode, "w");
+  if (testi && !testo && !testt && !testa)
+    strcpy(c_mode, "r");
+  // No read/write mode yet
+//  if (testi && testo && !testt && !testa)
+//    strcpy(c_mode, "r+");
+//  if (testi && testo && testt && !testa)
+//    strcpy(c_mode, "w+");
+
+  // Mode string should be empty for invalid combination of flags
+  if (strlen(c_mode) == 0)
+    return false;
+  if (testb)
+    strcat(c_mode, "b");
+  return true;
+}
+
+// Determine number of characters in internal get buffer
+std::streamsize
+gzfilebuf::showmanyc()
+{
+  // Calls to underflow will fail if file not opened for reading
+  if (!this->is_open() || !(io_mode & std::ios_base::in))
+    return -1;
+  // Make sure get area is in use
+  if (this->gptr() && (this->gptr() < this->egptr()))
+    return std::streamsize(this->egptr() - this->gptr());
+  else
+    return 0;
+}
+
+// Fill get area from gzipped file
+gzfilebuf::int_type
+gzfilebuf::underflow()
+{
+  // If something is left in the get area by chance, return it
+  // (this shouldn't normally happen, as underflow is only supposed
+  // to be called when gptr >= egptr, but it serves as error check)
+  if (this->gptr() && (this->gptr() < this->egptr()))
+    return traits_type::to_int_type(*(this->gptr()));
+
+  // If the file hasn't been opened for reading, produce error
+  if (!this->is_open() || !(io_mode & std::ios_base::in))
+    return traits_type::eof();
+
+  // Attempt to fill internal buffer from gzipped file
+  // (buffer must be guaranteed to exist...)
+  int bytes_read = gzread(file, buffer, buffer_size);
+  // Indicates error or EOF
+  if (bytes_read <= 0)
+  {
+    // Reset get area
+    this->setg(buffer, buffer, buffer);
+    return traits_type::eof();
+  }
+  // Make all bytes read from file available as get area
+  this->setg(buffer, buffer, buffer + bytes_read);
+
+  // Return next character in get area
+  return traits_type::to_int_type(*(this->gptr()));
+}
+
+// Write put area to gzipped file
+gzfilebuf::int_type
+gzfilebuf::overflow(int_type c)
+{
+  // Determine whether put area is in use
+  if (this->pbase())
+  {
+    // Double-check pointer range
+    if (this->pptr() > this->epptr() || this->pptr() < this->pbase())
+      return traits_type::eof();
+    // Add extra character to buffer if not EOF
+    if (!traits_type::eq_int_type(c, traits_type::eof()))
+    {
+      *(this->pptr()) = traits_type::to_char_type(c);
+      this->pbump(1);
+    }
+    // Number of characters to write to file
+    int bytes_to_write = this->pptr() - this->pbase();
+    // Overflow doesn't fail if nothing is to be written
+    if (bytes_to_write > 0)
+    {
+      // If the file hasn't been opened for writing, produce error
+      if (!this->is_open() || !(io_mode & std::ios_base::out))
+        return traits_type::eof();
+      // If gzipped file won't accept all bytes written to it, fail
+      if (gzwrite(file, this->pbase(), bytes_to_write) != bytes_to_write)
+        return traits_type::eof();
+      // Reset next pointer to point to pbase on success
+      this->pbump(-bytes_to_write);
+    }
+  }
+  // Write extra character to file if not EOF
+  else if (!traits_type::eq_int_type(c, traits_type::eof()))
+  {
+    // If the file hasn't been opened for writing, produce error
+    if (!this->is_open() || !(io_mode & std::ios_base::out))
+      return traits_type::eof();
+    // Impromptu char buffer (allows "unbuffered" output)
+    char_type last_char = traits_type::to_char_type(c);
+    // If gzipped file won't accept this character, fail
+    if (gzwrite(file, &last_char, 1) != 1)
+      return traits_type::eof();
+  }
+
+  // If you got here, you have succeeded (even if c was EOF)
+  // The return value should therefore be non-EOF
+  if (traits_type::eq_int_type(c, traits_type::eof()))
+    return traits_type::not_eof(c);
+  else
+    return c;
+}
+
+// Assign new buffer
+std::streambuf*
+gzfilebuf::setbuf(char_type* p,
+                  std::streamsize n)
+{
+  // First make sure stuff is sync'ed, for safety
+  if (this->sync() == -1)
+    return NULL;
+  // If buffering is turned off on purpose via setbuf(0,0), still allocate one...
+  // "Unbuffered" only really refers to put [27.8.1.4.10], while get needs at
+  // least a buffer of size 1 (very inefficient though, therefore make it bigger?)
+  // This follows from [27.5.2.4.3]/12 (gptr needs to point at something, it seems)
+  if (!p || !n)
+  {
+    // Replace existing buffer (if any) with small internal buffer
+    this->disable_buffer();
+    buffer = NULL;
+    buffer_size = 0;
+    own_buffer = true;
+    this->enable_buffer();
+  }
+  else
+  {
+    // Replace existing buffer (if any) with external buffer
+    this->disable_buffer();
+    buffer = p;
+    buffer_size = n;
+    own_buffer = false;
+    this->enable_buffer();
+  }
+  return this;
+}
+
+// Write put area to gzipped file (i.e. ensures that put area is empty)
+int
+gzfilebuf::sync()
+{
+  return traits_type::eq_int_type(this->overflow(), traits_type::eof()) ? -1 : 0;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+// Allocate internal buffer
+void
+gzfilebuf::enable_buffer()
+{
+  // If internal buffer required, allocate one
+  if (own_buffer && !buffer)
+  {
+    // Check for buffered vs. "unbuffered"
+    if (buffer_size > 0)
+    {
+      // Allocate internal buffer
+      buffer = new char_type[buffer_size];
+      // Get area starts empty and will be expanded by underflow as need arises
+      this->setg(buffer, buffer, buffer);
+      // Setup entire internal buffer as put area.
+      // The one-past-end pointer actually points to the last element of the buffer,
+      // so that overflow(c) can safely add the extra character c to the sequence.
+      // These pointers remain in place for the duration of the buffer
+      this->setp(buffer, buffer + buffer_size - 1);
+    }
+    else
+    {
+      // Even in "unbuffered" case, (small?) get buffer is still required
+      buffer_size = SMALLBUFSIZE;
+      buffer = new char_type[buffer_size];
+      this->setg(buffer, buffer, buffer);
+      // "Unbuffered" means no put buffer
+      this->setp(0, 0);
+    }
+  }
+  else
+  {
+    // If buffer already allocated, reset buffer pointers just to make sure no
+    // stale chars are lying around
+    this->setg(buffer, buffer, buffer);
+    this->setp(buffer, buffer + buffer_size - 1);
+  }
+}
+
+// Destroy internal buffer
+void
+gzfilebuf::disable_buffer()
+{
+  // If internal buffer exists, deallocate it
+  if (own_buffer && buffer)
+  {
+    // Preserve unbuffered status by zeroing size
+    if (!this->pbase())
+      buffer_size = 0;
+    delete[] buffer;
+    buffer = NULL;
+    this->setg(0, 0, 0);
+    this->setp(0, 0);
+  }
+  else
+  {
+    // Reset buffer pointers to initial state if external buffer exists
+    this->setg(buffer, buffer, buffer);
+    if (buffer)
+      this->setp(buffer, buffer + buffer_size - 1);
+    else
+      this->setp(0, 0);
+  }
+}
+
+/*****************************************************************************/
+
+// Default constructor initializes stream buffer
+gzifstream::gzifstream()
+: std::istream(NULL), sb()
+{ this->init(&sb); }
+
+// Initialize stream buffer and open file
+gzifstream::gzifstream(const char* name,
+                       std::ios_base::openmode mode)
+: std::istream(NULL), sb()
+{
+  this->init(&sb);
+  this->open(name, mode);
+}
+
+// Initialize stream buffer and attach to file
+gzifstream::gzifstream(int fd,
+                       std::ios_base::openmode mode)
+: std::istream(NULL), sb()
+{
+  this->init(&sb);
+  this->attach(fd, mode);
+}
+
+// Open file and go into fail() state if unsuccessful
+void
+gzifstream::open(const char* name,
+                 std::ios_base::openmode mode)
+{
+  if (!sb.open(name, mode | std::ios_base::in))
+    this->setstate(std::ios_base::failbit);
+  else
+    this->clear();
+}
+
+// Attach to file and go into fail() state if unsuccessful
+void
+gzifstream::attach(int fd,
+                   std::ios_base::openmode mode)
+{
+  if (!sb.attach(fd, mode | std::ios_base::in))
+    this->setstate(std::ios_base::failbit);
+  else
+    this->clear();
+}
+
+// Close file
+void
+gzifstream::close()
+{
+  if (!sb.close())
+    this->setstate(std::ios_base::failbit);
+}
+
+/*****************************************************************************/
+
+// Default constructor initializes stream buffer
+gzofstream::gzofstream()
+: std::ostream(NULL), sb()
+{ this->init(&sb); }
+
+// Initialize stream buffer and open file
+gzofstream::gzofstream(const char* name,
+                       std::ios_base::openmode mode)
+: std::ostream(NULL), sb()
+{
+  this->init(&sb);
+  this->open(name, mode);
+}
+
+// Initialize stream buffer and attach to file
+gzofstream::gzofstream(int fd,
+                       std::ios_base::openmode mode)
+: std::ostream(NULL), sb()
+{
+  this->init(&sb);
+  this->attach(fd, mode);
+}
+
+// Open file and go into fail() state if unsuccessful
+void
+gzofstream::open(const char* name,
+                 std::ios_base::openmode mode)
+{
+  if (!sb.open(name, mode | std::ios_base::out))
+    this->setstate(std::ios_base::failbit);
+  else
+    this->clear();
+}
+
+// Attach to file and go into fail() state if unsuccessful
+void
+gzofstream::attach(int fd,
+                   std::ios_base::openmode mode)
+{
+  if (!sb.attach(fd, mode | std::ios_base::out))
+    this->setstate(std::ios_base::failbit);
+  else
+    this->clear();
+}
+
+// Close file
+void
+gzofstream::close()
+{
+  if (!sb.close())
+    this->setstate(std::ios_base::failbit);
+}
--- a/contrib/iostream3/zfstream.h
+++ b/contrib/iostream3/zfstream.h
@@ -0,0 +1,466 @@
+/*
+ * A C++ I/O streams interface to the zlib gz* functions
+ *
+ * by Ludwig Schwardt <schwardt@sun.ac.za>
+ * original version by Kevin Ruland <kevin@rodin.wustl.edu>
+ *
+ * This version is standard-compliant and compatible with gcc 3.x.
+ */
+
+#ifndef ZFSTREAM_H
+#define ZFSTREAM_H
+
+#include <istream>  // not iostream, since we don't need cin/cout
+#include <ostream>
+#include "zlib.h"
+
+/*****************************************************************************/
+
+/**
+ *  @brief  Gzipped file stream buffer class.
+ *
+ *  This class implements basic_filebuf for gzipped files. It doesn't yet support
+ *  seeking (allowed by zlib but slow/limited), putback and read/write access
+ *  (tricky). Otherwise, it attempts to be a drop-in replacement for the standard
+ *  file streambuf.
+*/
+class gzfilebuf : public std::streambuf
+{
+public:
+  //  Default constructor.
+  gzfilebuf();
+
+  //  Destructor.
+  virtual
+  ~gzfilebuf();
+
+  /**
+   *  @brief  Set compression level and strategy on the fly.
+   *  @param  comp_level  Compression level (see zlib.h for allowed values)
+   *  @param  comp_strategy  Compression strategy (see zlib.h for allowed values)
+   *  @return  Z_OK on success, Z_STREAM_ERROR otherwise.
+   *
+   *  Unfortunately, these parameters cannot be modified separately, as the
+   *  previous zfstream version assumed. Since the strategy is seldom changed,
+   *  it can default and setcompression(level) then becomes like the old
+   *  setcompressionlevel(level).
+  */
+  int
+  setcompression(int comp_level,
+                 int comp_strategy = Z_DEFAULT_STRATEGY);
+
+  /**
+   *  @brief  Check if file is open.
+   *  @return  True if file is open.
+  */
+  bool
+  is_open() const { return (file != NULL); }
+
+  /**
+   *  @brief  Open gzipped file.
+   *  @param  name  File name.
+   *  @param  mode  Open mode flags.
+   *  @return  @c this on success, NULL on failure.
+  */
+  gzfilebuf*
+  open(const char* name,
+       std::ios_base::openmode mode);
+
+  /**
+   *  @brief  Attach to already open gzipped file.
+   *  @param  fd  File descriptor.
+   *  @param  mode  Open mode flags.
+   *  @return  @c this on success, NULL on failure.
+  */
+  gzfilebuf*
+  attach(int fd,
+         std::ios_base::openmode mode);
+
+  /**
+   *  @brief  Close gzipped file.
+   *  @return  @c this on success, NULL on failure.
+  */
+  gzfilebuf*
+  close();
+
+protected:
+  /**
+   *  @brief  Convert ios open mode int to mode string used by zlib.
+   *  @return  True if valid mode flag combination.
+  */
+  bool
+  open_mode(std::ios_base::openmode mode,
+            char* c_mode) const;
+
+  /**
+   *  @brief  Number of characters available in stream buffer.
+   *  @return  Number of characters.
+   *
+   *  This indicates number of characters in get area of stream buffer.
+   *  These characters can be read without accessing the gzipped file.
+  */
+  virtual std::streamsize
+  showmanyc();
+
+  /**
+   *  @brief  Fill get area from gzipped file.
+   *  @return  First character in get area on success, EOF on error.
+   *
+   *  This actually reads characters from gzipped file to stream
+   *  buffer. Always buffered.
+  */
+  virtual int_type
+  underflow();
+
+  /**
+   *  @brief  Write put area to gzipped file.
+   *  @param  c  Extra character to add to buffer contents.
+   *  @return  Non-EOF on success, EOF on error.
+   *
+   *  This actually writes characters in stream buffer to
+   *  gzipped file. With unbuffered output this is done one
+   *  character at a time.
+  */
+  virtual int_type
+  overflow(int_type c = traits_type::eof());
+
+  /**
+   *  @brief  Installs external stream buffer.
+   *  @param  p  Pointer to char buffer.
+   *  @param  n  Size of external buffer.
+   *  @return  @c this on success, NULL on failure.
+   *
+   *  Call setbuf(0,0) to enable unbuffered output.
+  */
+  virtual std::streambuf*
+  setbuf(char_type* p,
+         std::streamsize n);
+
+  /**
+   *  @brief  Flush stream buffer to file.
+   *  @return  0 on success, -1 on error.
+   *
+   *  This calls underflow(EOF) to do the job.
+  */
+  virtual int
+  sync();
+
+//
+// Some future enhancements
+//
+//  virtual int_type uflow();
+//  virtual int_type pbackfail(int_type c = traits_type::eof());
+//  virtual pos_type
+//  seekoff(off_type off,
+//          std::ios_base::seekdir way,
+//          std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
+//  virtual pos_type
+//  seekpos(pos_type sp,
+//          std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
+
+private:
+  /**
+   *  @brief  Allocate internal buffer.
+   *
+   *  This function is safe to call multiple times. It will ensure
+   *  that a proper internal buffer exists if it is required. If the
+   *  buffer already exists or is external, the buffer pointers will be
+   *  reset to their original state.
+  */
+  void
+  enable_buffer();
+
+  /**
+   *  @brief  Destroy internal buffer.
+   *
+   *  This function is safe to call multiple times. It will ensure
+   *  that the internal buffer is deallocated if it exists. In any
+   *  case, it will also reset the buffer pointers.
+  */
+  void
+  disable_buffer();
+
+  /**
+   *  Underlying file pointer.
+  */
+  gzFile file;
+
+  /**
+   *  Mode in which file was opened.
+  */
+  std::ios_base::openmode io_mode;
+
+  /**
+   *  @brief  True if this object owns file descriptor.
+   *
+   *  This makes the class responsible for closing the file
+   *  upon destruction.
+  */
+  bool own_fd;
+
+  /**
+   *  @brief  Stream buffer.
+   *
+   *  For simplicity this remains allocated on the free store for the
+   *  entire life span of the gzfilebuf object, unless replaced by setbuf.
+  */
+  char_type* buffer;
+
+  /**
+   *  @brief  Stream buffer size.
+   *
+   *  Defaults to system default buffer size (typically 8192 bytes).
+   *  Modified by setbuf.
+  */
+  std::streamsize buffer_size;
+
+  /**
+   *  @brief  True if this object owns stream buffer.
+   *
+   *  This makes the class responsible for deleting the buffer
+   *  upon destruction.
+  */
+  bool own_buffer;
+};
+
+/*****************************************************************************/
+
+/**
+ *  @brief  Gzipped file input stream class.
+ *
+ *  This class implements ifstream for gzipped files. Seeking and putback
+ *  is not supported yet.
+*/
+class gzifstream : public std::istream
+{
+public:
+  //  Default constructor
+  gzifstream();
+
+  /**
+   *  @brief  Construct stream on gzipped file to be opened.
+   *  @param  name  File name.
+   *  @param  mode  Open mode flags (forced to contain ios::in).
+  */
+  explicit
+  gzifstream(const char* name,
+             std::ios_base::openmode mode = std::ios_base::in);
+
+  /**
+   *  @brief  Construct stream on already open gzipped file.
+   *  @param  fd    File descriptor.
+   *  @param  mode  Open mode flags (forced to contain ios::in).
+  */
+  explicit
+  gzifstream(int fd,
+             std::ios_base::openmode mode = std::ios_base::in);
+
+  /**
+   *  Obtain underlying stream buffer.
+  */
+  gzfilebuf*
+  rdbuf() const
+  { return const_cast<gzfilebuf*>(&sb); }
+
+  /**
+   *  @brief  Check if file is open.
+   *  @return  True if file is open.
+  */
+  bool
+  is_open() { return sb.is_open(); }
+
+  /**
+   *  @brief  Open gzipped file.
+   *  @param  name  File name.
+   *  @param  mode  Open mode flags (forced to contain ios::in).
+   *
+   *  Stream will be in state good() if file opens successfully;
+   *  otherwise in state fail(). This differs from the behavior of
+   *  ifstream, which never sets the state to good() and therefore
+   *  won't allow you to reuse the stream for a second file unless
+   *  you manually clear() the state. The choice is a matter of
+   *  convenience.
+  */
+  void
+  open(const char* name,
+       std::ios_base::openmode mode = std::ios_base::in);
+
+  /**
+   *  @brief  Attach to already open gzipped file.
+   *  @param  fd  File descriptor.
+   *  @param  mode  Open mode flags (forced to contain ios::in).
+   *
+   *  Stream will be in state good() if attach succeeded; otherwise
+   *  in state fail().
+  */
+  void
+  attach(int fd,
+         std::ios_base::openmode mode = std::ios_base::in);
+
+  /**
+   *  @brief  Close gzipped file.
+   *
+   *  Stream will be in state fail() if close failed.
+  */
+  void
+  close();
+
+private:
+  /**
+   *  Underlying stream buffer.
+  */
+  gzfilebuf sb;
+};
+
+/*****************************************************************************/
+
+/**
+ *  @brief  Gzipped file output stream class.
+ *
+ *  This class implements ofstream for gzipped files. Seeking and putback
+ *  is not supported yet.
+*/
+class gzofstream : public std::ostream
+{
+public:
+  //  Default constructor
+  gzofstream();
+
+  /**
+   *  @brief  Construct stream on gzipped file to be opened.
+   *  @param  name  File name.
+   *  @param  mode  Open mode flags (forced to contain ios::out).
+  */
+  explicit
+  gzofstream(const char* name,
+             std::ios_base::openmode mode = std::ios_base::out);
+
+  /**
+   *  @brief  Construct stream on already open gzipped file.
+   *  @param  fd    File descriptor.
+   *  @param  mode  Open mode flags (forced to contain ios::out).
+  */
+  explicit
+  gzofstream(int fd,
+             std::ios_base::openmode mode = std::ios_base::out);
+
+  /**
+   *  Obtain underlying stream buffer.
+  */
+  gzfilebuf*
+  rdbuf() const
+  { return const_cast<gzfilebuf*>(&sb); }
+
+  /**
+   *  @brief  Check if file is open.
+   *  @return  True if file is open.
+  */
+  bool
+  is_open() { return sb.is_open(); }
+
+  /**
+   *  @brief  Open gzipped file.
+   *  @param  name  File name.
+   *  @param  mode  Open mode flags (forced to contain ios::out).
+   *
+   *  Stream will be in state good() if file opens successfully;
+   *  otherwise in state fail(). This differs from the behavior of
+   *  ofstream, which never sets the state to good() and therefore
+   *  won't allow you to reuse the stream for a second file unless
+   *  you manually clear() the state. The choice is a matter of
+   *  convenience.
+  */
+  void
+  open(const char* name,
+       std::ios_base::openmode mode = std::ios_base::out);
+
+  /**
+   *  @brief  Attach to already open gzipped file.
+   *  @param  fd  File descriptor.
+   *  @param  mode  Open mode flags (forced to contain ios::out).
+   *
+   *  Stream will be in state good() if attach succeeded; otherwise
+   *  in state fail().
+  */
+  void
+  attach(int fd,
+         std::ios_base::openmode mode = std::ios_base::out);
+
+  /**
+   *  @brief  Close gzipped file.
+   *
+   *  Stream will be in state fail() if close failed.
+  */
+  void
+  close();
+
+private:
+  /**
+   *  Underlying stream buffer.
+  */
+  gzfilebuf sb;
+};
+
+/*****************************************************************************/
+
+/**
+ *  @brief  Gzipped file output stream manipulator class.
+ *
+ *  This class defines a two-argument manipulator for gzofstream. It is used
+ *  as base for the setcompression(int,int) manipulator.
+*/
+template<typename T1, typename T2>
+  class gzomanip2
+  {
+  public:
+    // Allows insertor to peek at internals
+    template <typename Ta, typename Tb>
+      friend gzofstream&
+      operator<<(gzofstream&,
+                 const gzomanip2<Ta,Tb>&);
+
+    // Constructor
+    gzomanip2(gzofstream& (*f)(gzofstream&, T1, T2),
+              T1 v1,
+              T2 v2);
+  private:
+    // Underlying manipulator function
+    gzofstream&
+    (*func)(gzofstream&, T1, T2);
+
+    // Arguments for manipulator function
+    T1 val1;
+    T2 val2;
+  };
+
+/*****************************************************************************/
+
+// Manipulator function thunks through to stream buffer
+inline gzofstream&
+setcompression(gzofstream &gzs, int l, int s = Z_DEFAULT_STRATEGY)
+{
+  (gzs.rdbuf())->setcompression(l, s);
+  return gzs;
+}
+
+// Manipulator constructor stores arguments
+template<typename T1, typename T2>
+  inline
+  gzomanip2<T1,T2>::gzomanip2(gzofstream &(*f)(gzofstream &, T1, T2),
+                              T1 v1,
+                              T2 v2)
+  : func(f), val1(v1), val2(v2)
+  { }
+
+// Insertor applies underlying manipulator function to stream
+template<typename T1, typename T2>
+  inline gzofstream&
+  operator<<(gzofstream& s, const gzomanip2<T1,T2>& m)
+  { return (*m.func)(s, m.val1, m.val2); }
+
+// Insert this onto stream to simplify setting of compression level
+inline gzomanip2<int,int>
+setcompression(int l, int s = Z_DEFAULT_STRATEGY)
+{ return gzomanip2<int,int>(&setcompression, l, s); }
+
+#endif // ZFSTREAM_H
--- a/contrib/masm686/match.asm
+++ b/contrib/masm686/match.asm
@@ -0,0 +1,408 @@
+
+; match.asm -- Pentium-Pro optimized version of longest_match()
+;
+; Updated for zlib 1.1.3 and converted to MASM 6.1x
+; Copyright (C) 2000 Dan Higdon <hdan@kinesoft.com>
+;                    and Chuck Walbourn <chuckw@kinesoft.com>
+; Corrections by Cosmin Truta <cosmint@cs.ubbcluj.ro>
+;
+; This is free software; you can redistribute it and/or modify it
+; under the terms of the GNU General Public License.
+
+; Based on match.S
+; Written for zlib 1.1.2
+; Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
+
+	.686P
+	.MODEL	FLAT
+
+;===========================================================================
+; EQUATES
+;===========================================================================
+
+MAX_MATCH	EQU 258
+MIN_MATCH	EQU 3
+MIN_LOOKAHEAD	EQU (MAX_MATCH + MIN_MATCH + 1)
+MAX_MATCH_8	EQU ((MAX_MATCH + 7) AND (NOT 7))
+
+;===========================================================================
+; STRUCTURES
+;===========================================================================
+
+; This STRUCT assumes a 4-byte alignment
+
+DEFLATE_STATE	STRUCT
+ds_strm			dd ?
+ds_status		dd ?
+ds_pending_buf		dd ?
+ds_pending_buf_size	dd ?
+ds_pending_out		dd ?
+ds_pending		dd ?
+ds_wrap			dd ?
+ds_data_type		db ?
+ds_method		db ?
+			db ?	; padding
+			db ?	; padding
+ds_last_flush		dd ?
+ds_w_size		dd ?	; used
+ds_w_bits		dd ?
+ds_w_mask		dd ?	; used
+ds_window		dd ?	; used
+ds_window_size		dd ?
+ds_prev			dd ?	; used
+ds_head			dd ?
+ds_ins_h		dd ?
+ds_hash_size		dd ?
+ds_hash_bits		dd ?
+ds_hash_mask		dd ?
+ds_hash_shift		dd ?
+ds_block_start		dd ?
+ds_match_length		dd ?	; used
+ds_prev_match		dd ?	; used
+ds_match_available	dd ?
+ds_strstart		dd ?	; used
+ds_match_start		dd ?	; used
+ds_lookahead		dd ?	; used
+ds_prev_length		dd ?	; used
+ds_max_chain_length	dd ?	; used
+ds_max_laxy_match	dd ?
+ds_level		dd ?
+ds_strategy		dd ?
+ds_good_match		dd ?	; used
+ds_nice_match		dd ?	; used
+
+; Don't need anymore of the struct for match
+DEFLATE_STATE	ENDS
+
+;===========================================================================
+; CODE
+;===========================================================================
+_TEXT	SEGMENT
+
+;---------------------------------------------------------------------------
+; match_init
+;---------------------------------------------------------------------------
+	ALIGN	4
+PUBLIC	_match_init
+_match_init	PROC
+	; no initialization needed
+	ret
+_match_init	ENDP
+
+;---------------------------------------------------------------------------
+; uInt longest_match(deflate_state *deflatestate, IPos curmatch)
+;---------------------------------------------------------------------------
+	ALIGN	4
+
+PUBLIC	_longest_match
+_longest_match	PROC
+
+; Since this code uses EBP for a scratch register, the stack frame must
+; be manually constructed and referenced relative to the ESP register.
+
+; Stack image
+; Variables
+chainlenwmask	=  0	; high word: current chain len
+			; low word: s->wmask
+window		=  4	; local copy of s->window
+windowbestlen	=  8	; s->window + bestlen
+scanend		= 12	; last two bytes of string
+scanstart	= 16	; first two bytes of string
+scanalign	= 20	; dword-misalignment of string
+nicematch	= 24	; a good enough match size
+bestlen		= 28	; size of best match so far
+scan		= 32	; ptr to string wanting match
+varsize		= 36	; number of bytes (also offset to last saved register)
+
+; Saved Registers (actually pushed into place)
+ebx_save	= 36
+edi_save	= 40
+esi_save	= 44
+ebp_save	= 48
+
+; Parameters
+retaddr		= 52
+deflatestate	= 56
+curmatch	= 60
+
+; Save registers that the compiler may be using
+	push	ebp
+	push	edi
+	push	esi
+	push	ebx
+
+; Allocate local variable space
+	sub	esp,varsize
+
+; Retrieve the function arguments. ecx will hold cur_match
+; throughout the entire function. edx will hold the pointer to the
+; deflate_state structure during the function's setup (before
+; entering the main loop).
+
+	mov	edx, [esp+deflatestate]
+ASSUME	edx:PTR DEFLATE_STATE
+
+	mov	ecx, [esp+curmatch]
+
+; uInt wmask = s->w_mask;
+; unsigned chain_length = s->max_chain_length;
+; if (s->prev_length >= s->good_match) {
+;     chain_length >>= 2;
+; }
+
+	mov	eax, [edx].ds_prev_length
+	mov	ebx, [edx].ds_good_match
+	cmp	eax, ebx
+	mov	eax, [edx].ds_w_mask
+	mov	ebx, [edx].ds_max_chain_length
+	jl	SHORT LastMatchGood
+	shr	ebx, 2
+LastMatchGood:
+
+; chainlen is decremented once beforehand so that the function can
+; use the sign flag instead of the zero flag for the exit test.
+; It is then shifted into the high word, to make room for the wmask
+; value, which it will always accompany.
+
+	dec	ebx
+	shl	ebx, 16
+	or	ebx, eax
+	mov	[esp+chainlenwmask], ebx
+
+; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
+
+	mov	eax, [edx].ds_nice_match
+	mov	ebx, [edx].ds_lookahead
+	cmp	ebx, eax
+	jl	SHORT LookaheadLess
+	mov	ebx, eax
+LookaheadLess:
+	mov	[esp+nicematch], ebx
+
+;/* register Bytef *scan = s->window + s->strstart;                     */
+
+	mov	esi, [edx].ds_window
+	mov	[esp+window], esi
+	mov	ebp, [edx].ds_strstart
+	lea	edi, [esi+ebp]
+	mov	[esp+scan],edi
+
+;/* Determine how many bytes the scan ptr is off from being             */
+;/* dword-aligned.                                                      */
+
+	mov	eax, edi
+	neg	eax
+	and	eax, 3
+	mov	[esp+scanalign], eax
+
+;/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ?                      */
+;/*     s->strstart - (IPos)MAX_DIST(s) : NIL;                          */
+
+	mov	eax, [edx].ds_w_size
+	sub	eax, MIN_LOOKAHEAD
+	sub	ebp, eax
+	jg	SHORT LimitPositive
+	xor	ebp, ebp
+LimitPositive:
+
+;/* int best_len = s->prev_length;                                      */
+
+	mov	eax, [edx].ds_prev_length
+	mov	[esp+bestlen], eax
+
+;/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
+
+	add	esi, eax
+	mov	[esp+windowbestlen], esi
+
+;/* register ush scan_start = *(ushf*)scan;                             */
+;/* register ush scan_end   = *(ushf*)(scan+best_len-1);                */
+;/* Posf *prev = s->prev;                                               */
+
+	movzx	ebx, WORD PTR[edi]
+	mov	[esp+scanstart], ebx
+	movzx	ebx, WORD PTR[eax+edi-1]
+	mov	[esp+scanend], ebx
+	mov	edi, [edx].ds_prev
+
+;/* Jump into the main loop.                                            */
+
+	mov	edx, [esp+chainlenwmask]
+	jmp	SHORT LoopEntry
+
+;/* do {
+; *     match = s->window + cur_match;
+; *     if (*(ushf*)(match+best_len-1) != scan_end ||
+; *         *(ushf*)match != scan_start) continue;
+; *     [...]
+; * } while ((cur_match = prev[cur_match & wmask]) > limit
+; *          && --chain_length != 0);
+; *
+; * Here is the inner loop of the function. The function will spend the
+; * majority of its time in this loop, and majority of that time will
+; * be spent in the first ten instructions.
+; *
+; * Within this loop:
+; * %ebx = scanend
+; * %ecx = curmatch
+; * %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
+; * %esi = windowbestlen - i.e., (window + bestlen)
+; * %edi = prev
+; * %ebp = limit
+; */
+
+	ALIGN	4
+LookupLoop:
+	and	ecx, edx
+	movzx	ecx, WORD PTR[edi+ecx*2]
+	cmp	ecx, ebp
+	jbe	LeaveNow
+	sub	edx, 000010000H
+	js	LeaveNow
+
+LoopEntry:
+	movzx	eax, WORD PTR[esi+ecx-1]
+	cmp	eax, ebx
+	jnz	SHORT LookupLoop
+
+	mov	eax, [esp+window]
+	movzx	eax, WORD PTR[eax+ecx]
+	cmp	eax, [esp+scanstart]
+	jnz	SHORT LookupLoop
+
+;/* Store the current value of chainlen.                                */
+
+	mov	[esp+chainlenwmask], edx
+
+;/* Point %edi to the string under scrutiny, and %esi to the string we  */
+;/* are hoping to match it up with. In actuality, %esi and %edi are     */
+;/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is     */
+;/* initialized to -(MAX_MATCH_8 - scanalign).                          */
+
+	mov	esi, [esp+window]
+	mov	edi, [esp+scan]
+	add	esi, ecx
+	mov	eax, [esp+scanalign]
+	mov	edx, -MAX_MATCH_8
+	lea	edi, [edi+eax+MAX_MATCH_8]
+	lea	esi, [esi+eax+MAX_MATCH_8]
+
+;/* Test the strings for equality, 8 bytes at a time. At the end,
+; * adjust %edx so that it is offset to the exact byte that mismatched.
+; *
+; * We already know at this point that the first three bytes of the
+; * strings match each other, and they can be safely passed over before
+; * starting the compare loop. So what this code does is skip over 0-3
+; * bytes, as much as necessary in order to dword-align the %edi
+; * pointer. (%esi will still be misaligned three times out of four.)
+; *
+; * It should be confessed that this loop usually does not represent
+; * much of the total running time. Replacing it with a more
+; * straightforward "rep cmpsb" would not drastically degrade
+; * performance.
+; */
+
+LoopCmps:
+	mov	eax, DWORD PTR[esi+edx]
+	xor	eax, DWORD PTR[edi+edx]
+	jnz	SHORT LeaveLoopCmps
+
+	mov	eax, DWORD PTR[esi+edx+4]
+	xor	eax, DWORD PTR[edi+edx+4]
+	jnz	SHORT LeaveLoopCmps4
+
+	add	edx, 8
+	jnz	SHORT LoopCmps
+	jmp	LenMaximum
+	ALIGN	4
+
+LeaveLoopCmps4:
+	add	edx, 4
+
+LeaveLoopCmps:
+	test	eax, 00000FFFFH
+	jnz	SHORT LenLower
+
+	add	edx, 2
+	shr	eax, 16
+
+LenLower:
+	sub	al, 1
+	adc	edx, 0
+
+;/* Calculate the length of the match. If it is longer than MAX_MATCH,  */
+;/* then automatically accept it as the best possible match and leave.  */
+
+	lea	eax, [edi+edx]
+	mov	edi, [esp+scan]
+	sub	eax, edi
+	cmp	eax, MAX_MATCH
+	jge	SHORT LenMaximum
+
+;/* If the length of the match is not longer than the best match we     */
+;/* have so far, then forget it and return to the lookup loop.          */
+
+	mov	edx, [esp+deflatestate]
+	mov	ebx, [esp+bestlen]
+	cmp	eax, ebx
+	jg	SHORT LongerMatch
+	mov	esi, [esp+windowbestlen]
+	mov	edi, [edx].ds_prev
+	mov	ebx, [esp+scanend]
+	mov	edx, [esp+chainlenwmask]
+	jmp	LookupLoop
+	ALIGN	4
+
+;/*         s->match_start = cur_match;                                 */
+;/*         best_len = len;                                             */
+;/*         if (len >= nice_match) break;                               */
+;/*         scan_end = *(ushf*)(scan+best_len-1);                       */
+
+LongerMatch:
+	mov	ebx, [esp+nicematch]
+	mov	[esp+bestlen], eax
+	mov	[edx].ds_match_start, ecx
+	cmp	eax, ebx
+	jge	SHORT LeaveNow
+	mov	esi, [esp+window]
+	add	esi, eax
+	mov	[esp+windowbestlen], esi
+	movzx	ebx, WORD PTR[edi+eax-1]
+	mov	edi, [edx].ds_prev
+	mov	[esp+scanend], ebx
+	mov	edx, [esp+chainlenwmask]
+	jmp	LookupLoop
+	ALIGN	4
+
+;/* Accept the current string, with the maximum possible length.        */
+
+LenMaximum:
+	mov	edx, [esp+deflatestate]
+	mov	DWORD PTR[esp+bestlen], MAX_MATCH
+	mov	[edx].ds_match_start, ecx
+
+;/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len;          */
+;/* return s->lookahead;                                                */
+
+LeaveNow:
+	mov	edx, [esp+deflatestate]
+	mov	ebx, [esp+bestlen]
+	mov	eax, [edx].ds_lookahead
+	cmp	ebx, eax
+	jg	SHORT LookaheadRet
+	mov	eax, ebx
+LookaheadRet:
+
+; Restore the stack and return from whence we came.
+
+	add	esp, varsize
+	pop	ebx
+	pop	esi
+	pop	edi
+	pop	ebp
+	ret
+
+_longest_match	ENDP
+
+_TEXT	ENDS
+END
--- a/contrib/vstudio/vc70_32/gvmat32.asm
+++ b/contrib/vstudio/vc70_32/gvmat32.asm
@@ -14,31 +14,31 @@
 ;    deflate_state *s;
 ;    IPos cur_match;                             /* current match */

-        NbStack         equ     76
-        cur_match       equ     dword ptr[esp+NbStack-0]
-        str_s           equ     dword ptr[esp+NbStack-4]
+	NbStack         equ     76
+	cur_match       equ     dword ptr[esp+NbStack-0]
+	str_s           equ     dword ptr[esp+NbStack-4]
 ; 5 dword on top (ret,ebp,esi,edi,ebx)
-        adrret          equ     dword ptr[esp+NbStack-8]
-        pushebp         equ     dword ptr[esp+NbStack-12]
-        pushedi         equ     dword ptr[esp+NbStack-16]
-        pushesi         equ     dword ptr[esp+NbStack-20]
-        pushebx         equ     dword ptr[esp+NbStack-24]
+	adrret          equ     dword ptr[esp+NbStack-8]
+	pushebp         equ     dword ptr[esp+NbStack-12]
+	pushedi         equ     dword ptr[esp+NbStack-16]
+	pushesi         equ     dword ptr[esp+NbStack-20]
+	pushebx         equ     dword ptr[esp+NbStack-24]

-        chain_length    equ     dword ptr [esp+NbStack-28]
-        limit           equ     dword ptr [esp+NbStack-32]
-        best_len        equ     dword ptr [esp+NbStack-36]
-        window          equ     dword ptr [esp+NbStack-40]
-        prev            equ     dword ptr [esp+NbStack-44]
-        scan_start      equ      word ptr [esp+NbStack-48]
-        wmask           equ     dword ptr [esp+NbStack-52]
-        match_start_ptr equ     dword ptr [esp+NbStack-56]
-        nice_match      equ     dword ptr [esp+NbStack-60]
-        scan            equ     dword ptr [esp+NbStack-64]
+	chain_length    equ     dword ptr [esp+NbStack-28]
+	limit           equ     dword ptr [esp+NbStack-32]
+	best_len        equ     dword ptr [esp+NbStack-36]
+	window          equ     dword ptr [esp+NbStack-40]
+	prev            equ     dword ptr [esp+NbStack-44]
+	scan_start      equ      word ptr [esp+NbStack-48]
+	wmask           equ     dword ptr [esp+NbStack-52]
+	match_start_ptr equ     dword ptr [esp+NbStack-56]
+	nice_match      equ     dword ptr [esp+NbStack-60]
+	scan            equ     dword ptr [esp+NbStack-64]

-        windowlen       equ     dword ptr [esp+NbStack-68]
-        match_start     equ     dword ptr [esp+NbStack-72]
-        strend          equ     dword ptr [esp+NbStack-76]
-        NbStackAdd      equ     (NbStack-24)
+	windowlen       equ     dword ptr [esp+NbStack-68]
+	match_start     equ     dword ptr [esp+NbStack-72]
+	strend          equ     dword ptr [esp+NbStack-76]
+	NbStackAdd      equ     (NbStack-24)

    .386p

@@ -67,12 +67,12 @@
 _TEXT                   segment

 IFDEF NOUNDERLINE
-                        public  longest_match_7fff
-                        public  longest_match_686
+			public  longest_match_7fff
+			public  longest_match_686
 ;                        public  match_init
 ELSE
-                        public  _longest_match_7fff
-                        public  _longest_match_686
+			public  _longest_match_7fff
+			public  _longest_match_686
 ;                        public  _match_init
 ENDIF

@@ -99,93 +99,93 @@ ELSE
 _longest_match_7fff  proc near
 ENDIF

-        mov     edx,[esp+4]
+	mov     edx,[esp+4]



-        push    ebp
-        push    edi
-        push    esi
-        push    ebx
+	push    ebp
+	push    edi
+	push    esi
+	push    ebx

-        sub     esp,NbStackAdd
+	sub     esp,NbStackAdd

 ; initialize or check the variables used in match.asm.
-        mov     ebp,edx
+	mov     ebp,edx

 ; chain_length = s->max_chain_length
 ; if (prev_length>=good_match) chain_length >>= 2
-        mov     edx,[ebp+dep_chain_length]
-        mov     ebx,[ebp+dep_prev_length]
-        cmp     [ebp+dep_good_match],ebx
-        ja      noshr
-        shr     edx,2
+	mov     edx,[ebp+dep_chain_length]
+	mov     ebx,[ebp+dep_prev_length]
+	cmp     [ebp+dep_good_match],ebx
+	ja      noshr
+	shr     edx,2
 noshr:
 ; we increment chain_length because in the asm, the --chain_lenght is in the beginning of the loop
-        inc     edx
-        mov     edi,[ebp+dep_nice_match]
-        mov     chain_length,edx
-        mov     eax,[ebp+dep_lookahead]
-        cmp     eax,edi
+	inc     edx
+	mov     edi,[ebp+dep_nice_match]
+	mov     chain_length,edx
+	mov     eax,[ebp+dep_lookahead]
+	cmp     eax,edi
 ; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
-        jae     nolookaheadnicematch
-        mov     edi,eax
+	jae     nolookaheadnicematch
+	mov     edi,eax
 nolookaheadnicematch:
 ; best_len = s->prev_length
-        mov     best_len,ebx
+	mov     best_len,ebx

 ; window = s->window
-        mov     esi,[ebp+dep_window]
-        mov     ecx,[ebp+dep_strstart]
-        mov     window,esi
+	mov     esi,[ebp+dep_window]
+	mov     ecx,[ebp+dep_strstart]
+	mov     window,esi

-        mov     nice_match,edi
+	mov     nice_match,edi
 ; scan = window + strstart
-        add     esi,ecx
-        mov     scan,esi
+	add     esi,ecx
+	mov     scan,esi
 ; dx = *window
-        mov     dx,word ptr [esi]
+	mov     dx,word ptr [esi]
 ; bx = *(window+best_len-1)
-        mov     bx,word ptr [esi+ebx-1]
-        add     esi,MAX_MATCH-1
+	mov     bx,word ptr [esi+ebx-1]
+	add     esi,MAX_MATCH-1
 ; scan_start = *scan
-        mov     scan_start,dx
+	mov     scan_start,dx
 ; strend = scan + MAX_MATCH-1
-        mov     strend,esi
+	mov     strend,esi
 ; bx = scan_end = *(window+best_len-1)

 ;    IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
 ;        s->strstart - (IPos)MAX_DIST(s) : NIL;

-        mov     esi,[ebp+dep_w_size]
-        sub     esi,MIN_LOOKAHEAD
+	mov     esi,[ebp+dep_w_size]
+	sub     esi,MIN_LOOKAHEAD
 ; here esi = MAX_DIST(s)
-        sub     ecx,esi
-        ja      nodist
-        xor     ecx,ecx
+	sub     ecx,esi
+	ja      nodist
+	xor     ecx,ecx
 nodist:
-        mov     limit,ecx
+	mov     limit,ecx

 ; prev = s->prev
-        mov     edx,[ebp+dep_prev]
-        mov     prev,edx
+	mov     edx,[ebp+dep_prev]
+	mov     prev,edx

 ;
-        mov     edx,dword ptr [ebp+dep_match_start]
-        mov     bp,scan_start
-        mov     eax,cur_match
-        mov     match_start,edx
+	mov     edx,dword ptr [ebp+dep_match_start]
+	mov     bp,scan_start
+	mov     eax,cur_match
+	mov     match_start,edx

-        mov     edx,window
-        mov     edi,edx
-        add     edi,best_len
-        mov     esi,prev
-        dec     edi
+	mov     edx,window
+	mov     edi,edx
+	add     edi,best_len
+	mov     esi,prev
+	dec     edi
 ; windowlen = window + best_len -1
-        mov     windowlen,edi
+	mov     windowlen,edi

-        jmp     beginloop2
-        align   4
+	jmp     beginloop2
+	align   4

 ; here, in the loop
 ;       eax = ax = cur_match
@@ -198,301 +198,301 @@ nodist:

 ;// here; chain_length <=16
 normalbeg0add16:
-        add     chain_length,16
-        jz      exitloop
+	add     chain_length,16
+	jz      exitloop
 normalbeg0:
-        cmp     word ptr[edi+eax],bx
-        je      normalbeg2noroll
+	cmp     word ptr[edi+eax],bx
+	je      normalbeg2noroll
 rcontlabnoroll:
 ; cur_match = prev[cur_match & wmask]
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
+	and     eax,7fffh
+	mov     ax,word ptr[esi+eax*2]
 ; if cur_match > limit, go to exitloop
-        cmp     ecx,eax
-        jnb     exitloop
+	cmp     ecx,eax
+	jnb     exitloop
 ; if --chain_length != 0, go to exitloop
-        dec     chain_length
-        jnz     normalbeg0
-        jmp     exitloop
+	dec     chain_length
+	jnz     normalbeg0
+	jmp     exitloop

 normalbeg2noroll:
 ; if (scan_start==*(cur_match+window)) goto normalbeg2
-        cmp     bp,word ptr[edx+eax]
-        jne     rcontlabnoroll
-        jmp     normalbeg2
+	cmp     bp,word ptr[edx+eax]
+	jne     rcontlabnoroll
+	jmp     normalbeg2

 contloop3:
-        mov     edi,windowlen
+	mov     edi,windowlen

 ; cur_match = prev[cur_match & wmask]
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
+	and     eax,7fffh
+	mov     ax,word ptr[esi+eax*2]
 ; if cur_match > limit, go to exitloop
-        cmp     ecx,eax
+	cmp     ecx,eax
 jnbexitloopshort1:
-        jnb     exitloop
+	jnb     exitloop
 ; if --chain_length != 0, go to exitloop


 ; begin the main loop
 beginloop2:
-        sub     chain_length,16+1
+	sub     chain_length,16+1
 ; if chain_length <=16, don't use the unrolled loop
-        jna     normalbeg0add16
+	jna     normalbeg0add16

 do16:
-        cmp     word ptr[edi+eax],bx
-        je      normalbeg2dc0
+	cmp     word ptr[edi+eax],bx
+	je      normalbeg2dc0

 maccn   MACRO   lab
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
-        cmp     ecx,eax
-        jnb     exitloop
-        cmp     word ptr[edi+eax],bx
-        je      lab
-        ENDM
+	and     eax,7fffh
+	mov     ax,word ptr[esi+eax*2]
+	cmp     ecx,eax
+	jnb     exitloop
+	cmp     word ptr[edi+eax],bx
+	je      lab
+	ENDM

 rcontloop0:
-        maccn   normalbeg2dc1
+	maccn   normalbeg2dc1

 rcontloop1:
-        maccn   normalbeg2dc2
+	maccn   normalbeg2dc2

 rcontloop2:
-        maccn   normalbeg2dc3
+	maccn   normalbeg2dc3

 rcontloop3:
-        maccn   normalbeg2dc4
+	maccn   normalbeg2dc4

 rcontloop4:
-        maccn   normalbeg2dc5
+	maccn   normalbeg2dc5

 rcontloop5:
-        maccn   normalbeg2dc6
+	maccn   normalbeg2dc6

 rcontloop6:
-        maccn   normalbeg2dc7
+	maccn   normalbeg2dc7

 rcontloop7:
-        maccn   normalbeg2dc8
+	maccn   normalbeg2dc8

 rcontloop8:
-        maccn   normalbeg2dc9
+	maccn   normalbeg2dc9

 rcontloop9:
-        maccn   normalbeg2dc10
+	maccn   normalbeg2dc10

 rcontloop10:
-        maccn   short normalbeg2dc11
+	maccn   short normalbeg2dc11

 rcontloop11:
-        maccn   short normalbeg2dc12
+	maccn   short normalbeg2dc12

 rcontloop12:
-        maccn   short normalbeg2dc13
+	maccn   short normalbeg2dc13

 rcontloop13:
-        maccn   short normalbeg2dc14
+	maccn   short normalbeg2dc14

 rcontloop14:
-        maccn   short normalbeg2dc15
+	maccn   short normalbeg2dc15

 rcontloop15:
-        and     eax,7fffh
-        mov     ax,word ptr[esi+eax*2]
-        cmp     ecx,eax
-        jnb     exitloop
+	and     eax,7fffh
+	mov     ax,word ptr[esi+eax*2]
+	cmp     ecx,eax
+	jnb     exitloop

-        sub     chain_length,16
-        ja      do16
-        jmp     normalbeg0add16
+	sub     chain_length,16
+	ja      do16
+	jmp     normalbeg0add16

 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

 normbeg MACRO   rcontlab,valsub
 ; if we are here, we know that *(match+best_len-1) == scan_end
-        cmp     bp,word ptr[edx+eax]
+	cmp     bp,word ptr[edx+eax]
 ; if (match != scan_start) goto rcontlab
-        jne     rcontlab
+	jne     rcontlab
 ; calculate the good chain_length, and we'll compare scan and match string
-        add     chain_length,16-valsub
-        jmp     iseq
-        ENDM
+	add     chain_length,16-valsub
+	jmp     iseq
+	ENDM


 normalbeg2dc11:
-        normbeg rcontloop11,11
+	normbeg rcontloop11,11

 normalbeg2dc12:
-        normbeg short rcontloop12,12
+	normbeg short rcontloop12,12

 normalbeg2dc13:
-        normbeg short rcontloop13,13
+	normbeg short rcontloop13,13

 normalbeg2dc14:
-        normbeg short rcontloop14,14
+	normbeg short rcontloop14,14

 normalbeg2dc15:
-        normbeg short rcontloop15,15
+	normbeg short rcontloop15,15

 normalbeg2dc10:
-        normbeg rcontloop10,10
+	normbeg rcontloop10,10

 normalbeg2dc9:
-        normbeg rcontloop9,9
+	normbeg rcontloop9,9

 normalbeg2dc8:
-        normbeg rcontloop8,8
+	normbeg rcontloop8,8

 normalbeg2dc7:
-        normbeg rcontloop7,7
+	normbeg rcontloop7,7

 normalbeg2dc6:
-        normbeg rcontloop6,6
+	normbeg rcontloop6,6

 normalbeg2dc5:
-        normbeg rcontloop5,5
+	normbeg rcontloop5,5

 normalbeg2dc4:
-        normbeg rcontloop4,4
+	normbeg rcontloop4,4

 normalbeg2dc3:
-        normbeg rcontloop3,3
+	normbeg rcontloop3,3

 normalbeg2dc2:
-        normbeg rcontloop2,2
+	normbeg rcontloop2,2

 normalbeg2dc1:
-        normbeg rcontloop1,1
+	normbeg rcontloop1,1

 normalbeg2dc0:
-        normbeg rcontloop0,0
+	normbeg rcontloop0,0


 ; we go in normalbeg2 because *(ushf*)(match+best_len-1) == scan_end

 normalbeg2:
-        mov     edi,window
+	mov     edi,window

-        cmp     bp,word ptr[edi+eax]
-        jne     contloop3                   ; if *(ushf*)match != scan_start, continue
+	cmp     bp,word ptr[edi+eax]
+	jne     contloop3                   ; if *(ushf*)match != scan_start, continue

 iseq:
 ; if we are here, we know that *(match+best_len-1) == scan_end
 ; and (match == scan_start)

-        mov     edi,edx
-        mov     esi,scan                    ; esi = scan
-        add     edi,eax                     ; edi = window + cur_match = match
+	mov     edi,edx
+	mov     esi,scan                    ; esi = scan
+	add     edi,eax                     ; edi = window + cur_match = match

-        mov     edx,[esi+3]                 ; compare manually dword at match+3
-        xor     edx,[edi+3]                 ; and scan +3
+	mov     edx,[esi+3]                 ; compare manually dword at match+3
+	xor     edx,[edi+3]                 ; and scan +3

-        jz      begincompare                ; if equal, go to long compare
+	jz      begincompare                ; if equal, go to long compare

 ; we will determine the unmatch byte and calculate len (in esi)
-        or      dl,dl
-        je      eq1rr
-        mov     esi,3
-        jmp     trfinval
+	or      dl,dl
+	je      eq1rr
+	mov     esi,3
+	jmp     trfinval
 eq1rr:
-        or      dx,dx
-        je      eq1
+	or      dx,dx
+	je      eq1

-        mov     esi,4
-        jmp     trfinval
+	mov     esi,4
+	jmp     trfinval
 eq1:
-        and     edx,0ffffffh
-        jz      eq11
-        mov     esi,5
-        jmp     trfinval
+	and     edx,0ffffffh
+	jz      eq11
+	mov     esi,5
+	jmp     trfinval
 eq11:
-        mov     esi,6
-        jmp     trfinval
+	mov     esi,6
+	jmp     trfinval

 begincompare:
-        ; here we now scan and match begin same
-        add     edi,6
-        add     esi,6
-        mov     ecx,(MAX_MATCH-(2+4))/4     ; scan for at most MAX_MATCH bytes
-        repe    cmpsd                       ; loop until mismatch
+	; here we now scan and match begin same
+	add     edi,6
+	add     esi,6
+	mov     ecx,(MAX_MATCH-(2+4))/4     ; scan for at most MAX_MATCH bytes
+	repe    cmpsd                       ; loop until mismatch

-        je      trfin                       ; go to trfin if not unmatch
+	je      trfin                       ; go to trfin if not unmatch
 ; we determine the unmatch byte
-        sub     esi,4
-        mov     edx,[edi-4]
-        xor     edx,[esi]
+	sub     esi,4
+	mov     edx,[edi-4]
+	xor     edx,[esi]

-        or      dl,dl
-        jnz     trfin
-        inc     esi
+	or      dl,dl
+	jnz     trfin
+	inc     esi

-        or      dx,dx
-        jnz     trfin
-        inc     esi
+	or      dx,dx
+	jnz     trfin
+	inc     esi

-        and     edx,0ffffffh
-        jnz     trfin
-        inc     esi
+	and     edx,0ffffffh
+	jnz     trfin
+	inc     esi

 trfin:
-        sub     esi,scan          ; esi = len
+	sub     esi,scan          ; esi = len
 trfinval:
 ; here we have finised compare, and esi contain len of equal string
-        cmp     esi,best_len        ; if len > best_len, go newbestlen
-        ja      short newbestlen
+	cmp     esi,best_len        ; if len > best_len, go newbestlen
+	ja      short newbestlen
 ; now we restore edx, ecx and esi, for the big loop
-        mov     esi,prev
-        mov     ecx,limit
-        mov     edx,window
-        jmp     contloop3
+	mov     esi,prev
+	mov     ecx,limit
+	mov     edx,window
+	jmp     contloop3

 newbestlen:
-        mov     best_len,esi        ; len become best_len
+	mov     best_len,esi        ; len become best_len

-        mov     match_start,eax     ; save new position as match_start
-        cmp     esi,nice_match      ; if best_len >= nice_match, exit
-        jae     exitloop
-        mov     ecx,scan
-        mov     edx,window          ; restore edx=window
-        add     ecx,esi
-        add     esi,edx
+	mov     match_start,eax     ; save new position as match_start
+	cmp     esi,nice_match      ; if best_len >= nice_match, exit
+	jae     exitloop
+	mov     ecx,scan
+	mov     edx,window          ; restore edx=window
+	add     ecx,esi
+	add     esi,edx

-        dec     esi
-        mov     windowlen,esi       ; windowlen = window + best_len-1
-        mov     bx,[ecx-1]          ; bx = *(scan+best_len-1) = scan_end
+	dec     esi
+	mov     windowlen,esi       ; windowlen = window + best_len-1
+	mov     bx,[ecx-1]          ; bx = *(scan+best_len-1) = scan_end

 ; now we restore ecx and esi, for the big loop :
-        mov     esi,prev
-        mov     ecx,limit
-        jmp     contloop3
+	mov     esi,prev
+	mov     ecx,limit
+	jmp     contloop3

 exitloop:
 ; exit : s->match_start=match_start
-        mov     ebx,match_start
-        mov     ebp,str_s
-        mov     ecx,best_len
-        mov     dword ptr [ebp+dep_match_start],ebx        
-        mov     eax,dword ptr [ebp+dep_lookahead]
-        cmp     ecx,eax
-        ja      minexlo
-        mov     eax,ecx
+	mov     ebx,match_start
+	mov     ebp,str_s
+	mov     ecx,best_len
+	mov     dword ptr [ebp+dep_match_start],ebx
+	mov     eax,dword ptr [ebp+dep_lookahead]
+	cmp     ecx,eax
+	ja      minexlo
+	mov     eax,ecx
 minexlo:
 ; return min(best_len,s->lookahead)

 ; restore stack and register ebx,esi,edi,ebp
-        add     esp,NbStackAdd
+	add     esp,NbStackAdd

-        pop     ebx
-        pop     esi
-        pop     edi
-        pop     ebp
-        ret
+	pop     ebx
+	pop     esi
+	pop     edi
+	pop     ebp
+	ret
 InfoAuthor:
 ; please don't remove this string !
 ; Your are free use gvmat32 in any fre or commercial apps if you don't remove the string in the binary!
-        db     0dh,0ah,"GVMat32 optimised assembly code written 1996-98 by Gilles Vollant",0dh,0ah
+	db     0dh,0ah,"GVMat32 optimised assembly code written 1996-98 by Gilles Vollant",0dh,0ah



@@ -892,8 +892,8 @@ LookaheadRet:

 		ret
 ; please don't remove this string !
-; Your are free use gvmat32 in any fre or commercial apps if you don't remove the string in the binary!
-        db     0dh,0ah,"asm686 with masm, code optimised assembly code from Brian Raiter, written 1998",0dh,0ah
+; Your can freely use gvmat32 in any free or commercial app if you don't remove the string in the binary!
+	db     0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998",0dh,0ah

 IFDEF NOUNDERLINE
 longest_match_686   endp
--- a/contrib/vstudio/vc70_32/gvmat32c.c
+++ b/contrib/vstudio/vc70_32/gvmat32c.c
@@ -10,9 +10,6 @@

 #include "deflate.h"

-#undef FAR
-//#include <windows.h>
-
 #ifdef ASMV
 #define NIL 0

--- a/contrib/masmx86/inffas32.asm
+++ b/contrib/masmx86/inffas32.asm
--- a/contrib/masmx86/mkasm.bat
+++ b/contrib/masmx86/mkasm.bat
@@ -0,0 +1,3 @@
+cl /I..\.. /O2 /c gvmat32c.c
+ml /coff /Zi /c /Flgvmat32.lst gvmat32.asm
+ml /coff /Zi /c /Flinffas32.lst inffas32.asm
--- a/contrib/masmx86/readme.txt
+++ b/contrib/masmx86/readme.txt
@@ -0,0 +1,21 @@
+
+Summary
+-------
+This directory contains ASM implementations of the functions
+longest_match() and inflate_fast().
+
+
+Use instructions
+----------------
+Copy these files into the zlib source directory, then run the
+appropriate makefile, as suggested below.
+
+
+Build instructions
+------------------
+* With Microsoft C and MASM:
+nmake -f win32/Makefile.msc LOC="-DASMV -DASMINF" OBJA="gvmat32c.obj gvmat32.obj inffas32.obj"
+
+* With Borland C and TASM:
+make -f win32/Makefile.bor LOCAL_ZLIB="-DASMV -DASMINF" OBJA="gvmat32c.obj gvmat32.obj inffas32.obj" OBJPA="+gvmat32c.obj+gvmat32.obj+inffas32.obj"
+
--- a/contrib/minizip/ChangeLogUnzip
+++ b/contrib/minizip/ChangeLogUnzip
@@ -1,3 +1,11 @@
+Change in 1.00: (10 sept 03)
+- rename to 1.00
+- cosmetic code change
+
+Change in 0.22: (19 May 03)
+- crypting support (unless you define NOCRYPT)
+- append file in existing zipfile
+
 Change in 0.21: (10 Mar 03)
 - bug fixes

--- a/contrib/minizip/crypt.h
+++ b/contrib/minizip/crypt.h
@@ -1,3 +1,31 @@
+/* crypt.h -- base code for crypt/uncrypt ZIPfile
+
+
+   Version 1.00, September 10th, 2003
+
+   Copyright (C) 1998-2003 Gilles Vollant
+
+   This code is a modified version of crypting code in Infozip distribution
+
+   The encryption/decryption parts of this source code (as opposed to the
+   non-echoing password parts) were originally written in Europe.  The
+   whole source package can be freely distributed, including from the USA.
+   (Prior to January 2000, re-export from the US was a violation of US law.)
+
+   This encryption code is a direct transcription of the algorithm from
+   Roger Schlafly, described by Phil Katz in the file appnote.txt.  This
+   file (appnote.txt) is distributed with the PKZIP program (even in the
+   version without encryption capabilities).
+
+   If you don't need crypting in your application, just define symbols
+   NOCRYPT and NOUNCRYPT.
+
+   This code support the "Traditional PKWARE Encryption".
+
+   The new AES encryption added on Zip format by Winzip (see the page
+   http://www.winzip.com/aes_info.htm ) and PKWare PKZip 5.x Strong
+   Encryption is not supported.
+*/

 #define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))

@@ -56,7 +84,7 @@ static void init_keys(const char* passwd,unsigned long* pkeys,const unsigned lon
 #define RAND_HEAD_LEN  12
   /* "last resort" source for second part of crypt seed pattern */
 #  ifndef ZCR_SEED2
-#    define ZCR_SEED2 (unsigned long)3141592654L     /* use PI as default pattern */
+#    define ZCR_SEED2 3141592654UL     /* use PI as default pattern */
 #  endif

 static int crypthead(passwd, buf, bufSize, pkeys, pcrc_32_tab, crcForCrypting)
--- a/contrib/minizip/ioapi.c
+++ b/contrib/minizip/ioapi.c
@@ -1,7 +1,7 @@
 /* ioapi.c -- IO base function header for compress/uncompress .zip
   files using zlib + zip or unzip API

-   Version 0.21, March 10th, 2003
+   Version 1.00, September 10th, 2003

   Copyright (C) 1998-2003 Gilles Vollant
 */
--- a/contrib/minizip/ioapi.h
+++ b/contrib/minizip/ioapi.h
@@ -1,7 +1,7 @@
 /* ioapi.h -- IO base function header for compress/uncompress .zip
   files using zlib + zip or unzip API

-   Version 0.21, March 10th, 2003
+   Version 1.00, September 10th, 2003

   Copyright (C) 1998-2003 Gilles Vollant
 */
--- a/contrib/minizip/iowin32.c
+++ b/contrib/minizip/iowin32.c
@@ -2,12 +2,11 @@
   files using zlib + zip or unzip API
   This IO API version uses the Win32 API (for Microsoft Windows)

-   Version 0.21, March 10th, 2003
+   Version 1.00, September 10th, 2003

   Copyright (C) 1998-2003 Gilles Vollant
 */

-#include <windows.h>
 #include <stdlib.h>

 #include "zlib.h"
@@ -49,7 +48,7 @@ long ZCALLBACK win32_seek_file_func OF((
   uLong offset,
   int origin));

-long ZCALLBACK win32_close_file_func OF((
+int ZCALLBACK win32_close_file_func OF((
   voidpf opaque,
   voidpf stream));

@@ -225,11 +224,11 @@ long ZCALLBACK win32_seek_file_func (opaque, stream, offset, origin)
    return ret;
 }

-long ZCALLBACK win32_close_file_func (opaque, stream)
+int ZCALLBACK win32_close_file_func (opaque, stream)
   voidpf opaque;
   voidpf stream;
 {
-    long ret=-1;
+    int ret=-1;

    if (stream!=NULL)
    {
--- a/contrib/minizip/iowin32.h
+++ b/contrib/minizip/iowin32.h
@@ -2,18 +2,20 @@
   files using zlib + zip or unzip API
   This IO API version uses the Win32 API (for Microsoft Windows)

-   Version 0.21, March 10th, 2003
+   Version 1.00, September 10th, 2003

   Copyright (C) 1998-2003 Gilles Vollant
 */

+#include <windows.h>
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif

 void fill_win32_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));

-
 #ifdef __cplusplus
 }
 #endif
--- a/contrib/minizip/miniunz.c
+++ b/contrib/minizip/miniunz.c
@@ -140,13 +140,19 @@ int makedir (newdir)

 void do_banner()
 {
-    printf("MiniUnz 0.15, demo of zLib + Unz package written by Gilles Vollant\n");
+    printf("MiniUnz 1.00, demo of zLib + Unz package written by Gilles Vollant\n");
    printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
 }

 void do_help()
 {
-    printf("Usage : miniunz [-exvlo] file.zip [file_to_extract]\n\n") ;
+    printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.]\n\n" \
+           "  -e  Extract without pathname (junk paths)\n" \
+           "  -x  Extract with pathname\n" \
+           "  -v  list files\n" \
+           "  -l  list files\n" \
+           "  -o  overwrite files without prompting\n" \
+           "  -p  extract crypted file using password\n\n");
 }


@@ -168,6 +174,7 @@ int do_list(uf)
        unz_file_info file_info;
        uLong ratio=0;
        const char *string_method;
+        char charCrypt=' ';
        err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
        if (err!=UNZ_OK)
        {
@@ -177,6 +184,10 @@ int do_list(uf)
        if (file_info.uncompressed_size>0)
            ratio = (file_info.compressed_size*100)/file_info.uncompressed_size;

+        /* display a '*' if the file is crypted */
+        if ((file_info.flag & 1) != 0)
+            charCrypt='*';
+
        if (file_info.compression_method==0)
            string_method="Stored";
        else
@@ -193,8 +204,10 @@ int do_list(uf)
        else
            string_method="Unkn. ";

-        printf("%7lu  %6s %7lu %3lu%%  %2.2lu-%2.2lu-%2.2lu  %2.2lu:%2.2lu  %8.8lx   %s\n",
-                file_info.uncompressed_size,string_method,file_info.compressed_size,
+        printf("%7lu  %6s%c%7lu %3lu%%  %2.2lu-%2.2lu-%2.2lu  %2.2lu:%2.2lu  %8.8lx   %s\n",
+                file_info.uncompressed_size,string_method,
+                charCrypt,
+                file_info.compressed_size,
                ratio,
                (uLong)file_info.tmu_date.tm_mon + 1,
                (uLong)file_info.tmu_date.tm_mday,
@@ -495,28 +508,28 @@ int main(argc,argv)
    if (zipfilename!=NULL)
    {

-        #ifdef USEWIN32IOAPI
+#        ifdef USEWIN32IOAPI
        zlib_filefunc_def ffunc;
-        #endif
+#        endif

        strncpy(filename_try, zipfilename,MAXFILENAME-1);
        /* strncpy doesnt append the trailing NULL, of the string is too long. */
        filename_try[ MAXFILENAME ] = '\0';

-        #ifdef USEWIN32IOAPI
+#        ifdef USEWIN32IOAPI
        fill_win32_filefunc(&ffunc);
        uf = unzOpen2(zipfilename,&ffunc);
-        #else
+#        else
        uf = unzOpen(zipfilename);
-        #endif
+#        endif
        if (uf==NULL)
        {
            strcat(filename_try,".zip");
-            #ifdef USEWIN32IOAPI
+#            ifdef USEWIN32IOAPI
            uf = unzOpen2(filename_try,&ffunc);
-            #else
+#            else
            uf = unzOpen(filename_try);
-            #endif
+#            endif
        }
    }

--- a/contrib/minizip/minizip.c
+++ b/contrib/minizip/minizip.c
@@ -120,13 +120,18 @@ int check_exist_file(filename)

 void do_banner()
 {
-    printf("MiniZip 0.15, demo of zLib + Zip package written by Gilles Vollant\n");
+    printf("MiniZip 1.00, demo of zLib + Zip package written by Gilles Vollant\n");
    printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
 }

 void do_help()
 {
-    printf("Usage : minizip [-o] file.zip [files_to_add]\n\n") ;
+    printf("Usage : minizip [-o] [-a] [-0 to -9] [-p password] file.zip [files_to_add]\n\n" \
+           "  -o  Overwrite existing file.zip\n" \
+           "  -a  Append to existing file.zip\n" \
+           "  -0  Store only\n" \
+           "  -1  Compress faster\n" \
+           "  -9  Compress better\n\n");
 }

 /* calculate the CRC32 of a file,
@@ -282,13 +287,13 @@ int main(argc,argv)
    {
        zipFile zf;
        int errclose;
-        #ifdef USEWIN32IOAPI
+#        ifdef USEWIN32IOAPI
        zlib_filefunc_def ffunc;
        fill_win32_filefunc(&ffunc);
        zf = zipOpen2(filename_try,(opt_overwrite==2) ? 2 : 0,NULL,&ffunc);
-        #else
+#        else
        zf = zipOpen(filename_try,(opt_overwrite==2) ? 2 : 0);
-        #endif
+#        endif

        if (zf == NULL)
        {
--- a/contrib/minizip/unzip.c
+++ b/contrib/minizip/unzip.c
@@ -1,5 +1,5 @@
 /* unzip.c -- IO for uncompress .zip files using zlib
-   Version 0.21 with encryption, March 10th, 2003
+   Version 1.00, September 10th, 2003

   Copyright (C) 1998-2003 Gilles Vollant

@@ -59,10 +59,10 @@ woven in by Terry Thorsen 1/2003.
 /* compile with -Dlocal if your debugger can't find static symbols */


-
-#if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) && \
-                      !defined(CASESENSITIVITYDEFAULT_NO)
-#define CASESENSITIVITYDEFAULT_NO
+#ifndef CASESENSITIVITYDEFAULT_NO
+#  if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES)
+#    define CASESENSITIVITYDEFAULT_NO
+#  endif
 #endif


@@ -88,7 +88,7 @@ woven in by Terry Thorsen 1/2003.


 const char unz_copyright[] =
-   " unzip 0.21 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";
+   " unzip 1.00 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";

 /* unz_file_info_interntal contain internal info about a file in zipfile*/
 typedef struct unz_file_info_internal_s
@@ -145,14 +145,14 @@ typedef struct
    file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current
                                        file if we are decompressing it */
    int encrypted;
-    #ifndef NOUNCRPYT
+#    ifndef NOUNCRYPT
    unsigned long keys[3];     /* keys defining the pseudo-random sequence */
    const unsigned long* pcrc_32_tab;
-    #endif
+#    endif
 } unz_s;


-#ifndef NOUNCRPYT
+#ifndef NOUNCRYPT
 #include "crypt.h"
 #endif

@@ -828,7 +828,11 @@ extern int ZEXPORT unzLocateFile (file, szFileName, iCaseSensitivity)
    unz_s* s;
    int err;

-
+    /* We remember the 'current' position in the file so that we can jump
+     * back there if we fail.
+     */
+    unz_file_info cur_file_infoSaved;
+    unz_file_info_internal cur_file_info_internalSaved;
    uLong num_fileSaved;
    uLong pos_in_central_dirSaved;

@@ -843,25 +847,36 @@ extern int ZEXPORT unzLocateFile (file, szFileName, iCaseSensitivity)
    if (!s->current_file_ok)
        return UNZ_END_OF_LIST_OF_FILE;

+    /* Save the current state */
    num_fileSaved = s->num_file;
    pos_in_central_dirSaved = s->pos_in_central_dir;
+    cur_file_infoSaved = s->cur_file_info;
+    cur_file_info_internalSaved = s->cur_file_info_internal;

    err = unzGoToFirstFile(file);

    while (err == UNZ_OK)
    {
        char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
-        unzGetCurrentFileInfo(file,NULL,
-                                szCurrentFileName,sizeof(szCurrentFileName)-1,
-                                NULL,0,NULL,0);
-        if (unzStringFileNameCompare(szCurrentFileName,
-                                        szFileName,iCaseSensitivity)==0)
-            return UNZ_OK;
-        err = unzGoToNextFile(file);
+        err = unzGetCurrentFileInfo(file,NULL,
+                                    szCurrentFileName,sizeof(szCurrentFileName)-1,
+                                    NULL,0,NULL,0);
+        if (err == UNZ_OK)
+        {
+            if (unzStringFileNameCompare(szCurrentFileName,
+                                            szFileName,iCaseSensitivity)==0)
+                return UNZ_OK;
+            err = unzGoToNextFile(file);
+        }
    }

+    /* We failed, so restore the state of the 'current file' to where we
+     * were.
+     */
    s->num_file = num_fileSaved ;
    s->pos_in_central_dir = pos_in_central_dirSaved ;
+    s->cur_file_info = cur_file_infoSaved;
+    s->cur_file_info_internal = cur_file_info_internalSaved;
    return err;
 }

@@ -1041,12 +1056,12 @@ extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password)
    file_in_zip_read_info_s* pfile_in_zip_read_info;
    uLong offset_local_extrafield;  /* offset of the local extra field */
    uInt  size_local_extrafield;    /* size of the local extra field */
-    #ifndef NOUNCRPYT
+#    ifndef NOUNCRYPT
    char source[12];
-    #else
+#    else
    if (password != NULL)
        return UNZ_PARAMERROR;
-    #endif
+#    endif

    if (file==NULL)
        return UNZ_PARAMERROR;
@@ -1114,6 +1129,8 @@ extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password)
      pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
      pfile_in_zip_read_info->stream.zfree = (free_func)0;
      pfile_in_zip_read_info->stream.opaque = (voidpf)0;
+      pfile_in_zip_read_info->stream.next_in = (voidpf)0;
+      pfile_in_zip_read_info->stream.avail_in = 0;

      err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
      if (err == Z_OK)
@@ -1142,7 +1159,7 @@ extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password)

    s->pfile_in_zip_read = pfile_in_zip_read_info;

-    #ifndef NOUNCRPYT
+#    ifndef NOUNCRYPT
    if (password != NULL)
    {
        int i;
@@ -1162,7 +1179,7 @@ extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password)
        s->pfile_in_zip_read->pos_in_zipfile+=12;
        s->encrypted=1;
    }
-    #endif
+#    endif


    return UNZ_OK;
@@ -1254,7 +1271,7 @@ extern int ZEXPORT unzReadCurrentFile  (file, buf, len)
                return UNZ_ERRNO;


-            #ifndef NOUNCRPYT
+#            ifndef NOUNCRYPT
            if(s->encrypted)
            {
                uInt i;
@@ -1263,7 +1280,7 @@ extern int ZEXPORT unzReadCurrentFile  (file, buf, len)
                      zdecode(s->keys,s->pcrc_32_tab,
                              pfile_in_zip_read_info->read_buffer[i]);
            }
-            #endif
+#            endif


            pfile_in_zip_read_info->pos_in_zipfile += uReadThis;
--- a/contrib/minizip/unzip.h
+++ b/contrib/minizip/unzip.h
@@ -1,5 +1,5 @@
 /* unzip.h -- IO for uncompress .zip files using zlib
-   Version 0.21, March 10th, 2003
+   Version 1.00, September 10th, 2003

   Copyright (C) 1998-2003 Gilles Vollant

--- a/contrib/minizip/zip.c
+++ b/contrib/minizip/zip.c
@@ -1,5 +1,7 @@
 /* zip.c -- IO on .zip files using zlib
-   Version 0.21, March 10th, 2003
+   Version 1.00, September 10th, 2003
+
+   Copyright (C) 1998-2003 Gilles Vollant

   Read zip.h for more info
 */
@@ -75,7 +77,7 @@
 #endif
 #endif
 const char zip_copyright[] =
-   " zip 0.21 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";
+   " zip 1.00 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";


 #define SIZEDATA_INDATABLOCK (4096-(4*4))
@@ -123,7 +125,7 @@ typedef struct
    uLong dosDate;
    uLong crc32;
    int  encrypt;
-#ifndef NOCRPYT
+#ifndef NOCRYPT
    unsigned long keys[3];     /* keys defining the pseudo-random sequence */
    const unsigned long* pcrc_32_tab;
    int crypt_header_size;
@@ -145,7 +147,7 @@ typedef struct



-#ifndef NOCRPYT
+#ifndef NOCRYPT
 #define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
 #include "crypt.h"
 #endif
@@ -511,7 +513,7 @@ extern zipFile ZEXPORT zipOpen2 (pathname, append, globalcomment, pzlib_filefunc
    }

    /* now we add file in a zipfile */
-    #ifndef NO_ADDFILEINEXISTINGZIP
+#    ifndef NO_ADDFILEINEXISTINGZIP
    if (append == APPEND_STATUS_ADDINZIP)
    {
        uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
@@ -621,7 +623,7 @@ extern zipFile ZEXPORT zipOpen2 (pathname, append, globalcomment, pzlib_filefunc
                  offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
            err=ZIP_ERRNO;
    }
-    #endif /* !NO_ADDFILEINEXISTINGZIP*/
+#    endif /* !NO_ADDFILEINEXISTINGZIP*/

    if (err != ZIP_OK)
    {
@@ -671,10 +673,10 @@ extern int ZEXPORT zipOpenNewFileInZip3 (file, filename, zipfi,
    uInt i;
    int err = ZIP_OK;

-    #ifdef NOCRPYT
+#    ifdef NOCRYPT
    if (password != NULL)
        return ZIP_PARAMERROR;
-    #endif
+#    endif

    if (file == NULL)
        return ZIP_PARAMERROR;
@@ -827,26 +829,24 @@ extern int ZEXPORT zipOpenNewFileInZip3 (file, filename, zipfi,

        if (err==Z_OK)
            zi->ci.stream_initialised = 1;
-
-        #ifndef NOCRPYT
-        zi->ci.crypt_header_size = 0;
-        if ((err==Z_OK) && (password != NULL))
-        {
-            unsigned char bufHead[RAND_HEAD_LEN];
-            unsigned int sizeHead;
-            zi->ci.encrypt = 1;
-            zi->ci.pcrc_32_tab = get_crc_table();
-            /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/
-
-            sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
-            zi->ci.crypt_header_size = sizeHead;
-
-            if (ZWRITE(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
-                    err = ZIP_ERRNO;
-        }
-        #endif
    }
+#    ifndef NOCRYPT
+    zi->ci.crypt_header_size = 0;
+    if ((err==Z_OK) && (password != NULL))
+    {
+        unsigned char bufHead[RAND_HEAD_LEN];
+        unsigned int sizeHead;
+        zi->ci.encrypt = 1;
+        zi->ci.pcrc_32_tab = get_crc_table();
+        /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/

+        sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
+        zi->ci.crypt_header_size = sizeHead;
+
+        if (ZWRITE(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
+                err = ZIP_ERRNO;
+    }
+#    endif

    if (err==Z_OK)
        zi->in_opened_file_inzip = 1;
@@ -905,11 +905,13 @@ local int zipFlushWriteBuffer(zi)

    if (zi->ci.encrypt != 0)
    {
+#ifndef NOCRYPT
        uInt i;
        int t;
        for (i=0;i<zi->ci.pos_in_buffered_data;i++)
            zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab,
                                       zi->ci.buffered_data[i],t);
+#endif
    }
    if (ZWRITE(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data)
                                                                    !=zi->ci.pos_in_buffered_data)
@@ -1035,9 +1037,9 @@ extern int ZEXPORT zipCloseFileInZipRaw (file, uncompressed_size, crc32)
        uncompressed_size = (uLong)zi->ci.stream.total_in;
    }
    compressed_size = (uLong)zi->ci.stream.total_out;
-    #ifndef NOCRPYT
+#    ifndef NOCRYPT
    compressed_size += zi->ci.crypt_header_size;
-    #endif
+#    endif

    ziplocal_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
    ziplocal_putValue_inmemory(zi->ci.central_header+20,
--- a/contrib/minizip/zip.h
+++ b/contrib/minizip/zip.h
@@ -1,5 +1,5 @@
 /* zip.h -- IO for compress .zip files using zlib
-   Version 0.21, March 10th, 2003
+   Version 1.00, September 10th, 2003

   Copyright (C) 1998-2003 Gilles Vollant

--- a/contrib/pascal/example.pas
+++ b/contrib/pascal/example.pas
@@ -0,0 +1,599 @@
+(* example.c -- usage example of the zlib compression library
+ * Copyright (C) 1995-2003 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ *
+ * Pascal translation
+ * Copyright (C) 1998 by Jacques Nomssi Nzali.
+ * For conditions of distribution and use, see copyright notice in readme.txt
+ *
+ * Adaptation to the zlibpas interface
+ * Copyright (C) 2003 by Cosmin Truta.
+ * For conditions of distribution and use, see copyright notice in readme.txt
+ *)
+
+program example;
+
+{$DEFINE TEST_COMPRESS}
+{DO NOT $DEFINE TEST_GZIO}
+{$DEFINE TEST_DEFLATE}
+{$DEFINE TEST_INFLATE}
+{$DEFINE TEST_FLUSH}
+{$DEFINE TEST_SYNC}
+{$DEFINE TEST_DICT}
+
+uses SysUtils, zlibpas;
+
+const TESTFILE = 'foo.gz';
+
+(* "hello world" would be more standard, but the repeated "hello"
+ * stresses the compression code better, sorry...
+ *)
+const hello: PChar = 'hello, hello!';
+
+const dictionary: PChar = 'hello';
+
+var dictId: LongInt; (* Adler32 value of the dictionary *)
+
+procedure CHECK_ERR(err: Integer; msg: String);
+begin
+  if err <> Z_OK then
+  begin
+    WriteLn(msg, ' error: ', err);
+    Halt(1);
+  end;
+end;
+
+procedure EXIT_ERR(const msg: String);
+begin
+  WriteLn('Error: ', msg);
+  Halt(1);
+end;
+
+(* ===========================================================================
+ * Test compress and uncompress
+ *)
+{$IFDEF TEST_COMPRESS}
+procedure test_compress(compr: Pointer; comprLen: LongInt;
+                        uncompr: Pointer; uncomprLen: LongInt);
+var err: Integer;
+    len: LongInt;
+begin
+  len := StrLen(hello)+1;
+
+  err := compress(compr, comprLen, hello, len);
+  CHECK_ERR(err, 'compress');
+
+  StrCopy(PChar(uncompr), 'garbage');
+
+  err := uncompress(uncompr, uncomprLen, compr, comprLen);
+  CHECK_ERR(err, 'uncompress');
+
+  if StrComp(PChar(uncompr), hello) <> 0 then
+    EXIT_ERR('bad uncompress')
+  else
+    WriteLn('uncompress(): ', PChar(uncompr));
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test read/write of .gz files
+ *)
+{$IFDEF TEST_GZIO}
+procedure test_gzio(const fname: PChar; (* compressed file name *)
+                    uncompr: Pointer;
+                    uncomprLen: LongInt);
+var err: Integer;
+    len: Integer;
+    zfile: gzFile;
+    pos: LongInt;
+begin
+  len := StrLen(hello)+1;
+
+  zfile := gzopen(fname, 'wb');
+  if zfile = NIL then
+  begin
+    WriteLn('gzopen error');
+    Halt(1);
+  end;
+  gzputc(zfile, 'h');
+  if gzputs(zfile, 'ello') <> 4 then
+  begin
+    WriteLn('gzputs err: ', gzerror(zfile, err));
+    Halt(1);
+  end;
+  {$IFDEF GZ_FORMAT_STRING}
+  if gzprintf(zfile, ', %s!', 'hello') <> 8 then
+  begin
+    WriteLn('gzprintf err: ', gzerror(zfile, err));
+    Halt(1);
+  end;
+  {$ELSE}
+  if gzputs(zfile, ', hello!') <> 8 then
+  begin
+    WriteLn('gzputs err: ', gzerror(zfile, err));
+    Halt(1);
+  end;
+  {$ENDIF}
+  gzseek(zfile, 1, SEEK_CUR); (* add one zero byte *)
+  gzclose(zfile);
+
+  zfile := gzopen(fname, 'rb');
+  if zfile = NIL then
+  begin
+    WriteLn('gzopen error');
+    Halt(1);
+  end;
+
+  StrCopy(PChar(uncompr), 'garbage');
+
+  if gzread(zfile, uncompr, uncomprLen) <> len then
+  begin
+    WriteLn('gzread err: ', gzerror(zfile, err));
+    Halt(1);
+  end;
+  if StrComp(PChar(uncompr), hello) <> 0 then
+  begin
+    WriteLn('bad gzread: ', PChar(uncompr));
+    Halt(1);
+  end
+  else
+    WriteLn('gzread(): ', PChar(uncompr));
+
+  pos := gzseek(zfile, -8, SEEK_CUR);
+  if (pos <> 6) or (gztell(zfile) <> pos) then
+  begin
+    WriteLn('gzseek error, pos=', pos, ', gztell=', gztell(zfile));
+    Halt(1);
+  end;
+
+  if gzgetc(zfile) <> ' ' then
+  begin
+    WriteLn('gzgetc error');
+    Halt(1);
+  end;
+
+  if gzungetc(' ', zfile) <> ' ' then
+  begin
+    WriteLn('gzungetc error');
+    Halt(1);
+  end;
+
+  gzgets(zfile, PChar(uncompr), uncomprLen);
+  uncomprLen := StrLen(PChar(uncompr));
+  if uncomprLen <> 7 then (* " hello!" *)
+  begin
+    WriteLn('gzgets err after gzseek: ', gzerror(zfile, err));
+    Halt(1);
+  end;
+  if StrComp(PChar(uncompr), hello + 6) <> 0 then
+  begin
+    WriteLn('bad gzgets after gzseek');
+    Halt(1);
+  end
+  else
+    WriteLn('gzgets() after gzseek: ', PChar(uncompr));
+
+  gzclose(zfile);
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test deflate with small buffers
+ *)
+{$IFDEF TEST_DEFLATE}
+procedure test_deflate(compr: Pointer; comprLen: LongInt);
+var c_stream: z_stream; (* compression stream *)
+    err: Integer;
+    len: LongInt;
+begin
+  len := StrLen(hello)+1;
+
+  c_stream.zalloc := NIL;
+  c_stream.zfree := NIL;
+  c_stream.opaque := NIL;
+
+  err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
+  CHECK_ERR(err, 'deflateInit');
+
+  c_stream.next_in := hello;
+  c_stream.next_out := compr;
+
+  while (c_stream.total_in <> len) and
+        (c_stream.total_out < comprLen) do
+  begin
+    c_stream.avail_out := 1; { force small buffers }
+    c_stream.avail_in := 1;
+    err := deflate(c_stream, Z_NO_FLUSH);
+    CHECK_ERR(err, 'deflate');
+  end;
+
+  (* Finish the stream, still forcing small buffers: *)
+  while TRUE do
+  begin
+    c_stream.avail_out := 1;
+    err := deflate(c_stream, Z_FINISH);
+    if err = Z_STREAM_END then
+      break;
+    CHECK_ERR(err, 'deflate');
+  end;
+
+  err := deflateEnd(c_stream);
+  CHECK_ERR(err, 'deflateEnd');
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test inflate with small buffers
+ *)
+{$IFDEF TEST_INFLATE}
+procedure test_inflate(compr: Pointer; comprLen : LongInt;
+                       uncompr: Pointer; uncomprLen : LongInt);
+var err: Integer;
+    d_stream: z_stream; (* decompression stream *)
+begin
+  StrCopy(PChar(uncompr), 'garbage');
+
+  d_stream.zalloc := NIL;
+  d_stream.zfree := NIL;
+  d_stream.opaque := NIL;
+
+  d_stream.next_in := compr;
+  d_stream.avail_in := 0;
+  d_stream.next_out := uncompr;
+
+  err := inflateInit(d_stream);
+  CHECK_ERR(err, 'inflateInit');
+
+  while (d_stream.total_out < uncomprLen) and
+        (d_stream.total_in < comprLen) do
+  begin
+    d_stream.avail_out := 1; (* force small buffers *)
+    d_stream.avail_in := 1;
+    err := inflate(d_stream, Z_NO_FLUSH);
+    if err = Z_STREAM_END then
+      break;
+    CHECK_ERR(err, 'inflate');
+  end;
+
+  err := inflateEnd(d_stream);
+  CHECK_ERR(err, 'inflateEnd');
+
+  if StrComp(PChar(uncompr), hello) <> 0 then
+    EXIT_ERR('bad inflate')
+  else
+    WriteLn('inflate(): ', PChar(uncompr));
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test deflate with large buffers and dynamic change of compression level
+ *)
+{$IFDEF TEST_DEFLATE}
+procedure test_large_deflate(compr: Pointer; comprLen: LongInt;
+                             uncompr: Pointer; uncomprLen: LongInt);
+var c_stream: z_stream; (* compression stream *)
+    err: Integer;
+begin
+  c_stream.zalloc := NIL;
+  c_stream.zfree := NIL;
+  c_stream.opaque := NIL;
+
+  err := deflateInit(c_stream, Z_BEST_SPEED);
+  CHECK_ERR(err, 'deflateInit');
+
+  c_stream.next_out := compr;
+  c_stream.avail_out := Integer(comprLen);
+
+  (* At this point, uncompr is still mostly zeroes, so it should compress
+   * very well:
+   *)
+  c_stream.next_in := uncompr;
+  c_stream.avail_in := Integer(uncomprLen);
+  err := deflate(c_stream, Z_NO_FLUSH);
+  CHECK_ERR(err, 'deflate');
+  if c_stream.avail_in <> 0 then
+    EXIT_ERR('deflate not greedy');
+
+  (* Feed in already compressed data and switch to no compression: *)
+  deflateParams(c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
+  c_stream.next_in := compr;
+  c_stream.avail_in := Integer(comprLen div 2);
+  err := deflate(c_stream, Z_NO_FLUSH);
+  CHECK_ERR(err, 'deflate');
+
+  (* Switch back to compressing mode: *)
+  deflateParams(c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
+  c_stream.next_in := uncompr;
+  c_stream.avail_in := Integer(uncomprLen);
+  err := deflate(c_stream, Z_NO_FLUSH);
+  CHECK_ERR(err, 'deflate');
+
+  err := deflate(c_stream, Z_FINISH);
+  if err <> Z_STREAM_END then
+    EXIT_ERR('deflate should report Z_STREAM_END');
+
+  err := deflateEnd(c_stream);
+  CHECK_ERR(err, 'deflateEnd');
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test inflate with large buffers
+ *)
+{$IFDEF TEST_INFLATE}
+procedure test_large_inflate(compr: Pointer; comprLen: LongInt;
+                             uncompr: Pointer; uncomprLen: LongInt);
+var err: Integer;
+    d_stream: z_stream; (* decompression stream *)
+begin
+  StrCopy(PChar(uncompr), 'garbage');
+
+  d_stream.zalloc := NIL;
+  d_stream.zfree := NIL;
+  d_stream.opaque := NIL;
+
+  d_stream.next_in := compr;
+  d_stream.avail_in := Integer(comprLen);
+
+  err := inflateInit(d_stream);
+  CHECK_ERR(err, 'inflateInit');
+
+  while TRUE do
+  begin
+    d_stream.next_out := uncompr;            (* discard the output *)
+    d_stream.avail_out := Integer(uncomprLen);
+    err := inflate(d_stream, Z_NO_FLUSH);
+    if err = Z_STREAM_END then
+      break;
+    CHECK_ERR(err, 'large inflate');
+  end;
+
+  err := inflateEnd(d_stream);
+  CHECK_ERR(err, 'inflateEnd');
+
+  if d_stream.total_out <> 2 * uncomprLen + comprLen div 2 then
+  begin
+    WriteLn('bad large inflate: ', d_stream.total_out);
+    Halt(1);
+  end
+  else
+    WriteLn('large_inflate(): OK');
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test deflate with full flush
+ *)
+{$IFDEF TEST_FLUSH}
+procedure test_flush(compr: Pointer; var comprLen : LongInt);
+var c_stream: z_stream; (* compression stream *)
+    err: Integer;
+    len: Integer;
+begin
+  len := StrLen(hello)+1;
+
+  c_stream.zalloc := NIL;
+  c_stream.zfree := NIL;
+  c_stream.opaque := NIL;
+
+  err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
+  CHECK_ERR(err, 'deflateInit');
+
+  c_stream.next_in := hello;
+  c_stream.next_out := compr;
+  c_stream.avail_in := 3;
+  c_stream.avail_out := Integer(comprLen);
+  err := deflate(c_stream, Z_FULL_FLUSH);
+  CHECK_ERR(err, 'deflate');
+
+  Inc(PByteArray(compr)^[3]); (* force an error in first compressed block *)
+  c_stream.avail_in := len - 3;
+
+  err := deflate(c_stream, Z_FINISH);
+  if err <> Z_STREAM_END then
+    CHECK_ERR(err, 'deflate');
+
+  err := deflateEnd(c_stream);
+  CHECK_ERR(err, 'deflateEnd');
+
+  comprLen := c_stream.total_out;
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test inflateSync()
+ *)
+{$IFDEF TEST_SYNC}
+procedure test_sync(compr: Pointer; comprLen: LongInt;
+                    uncompr: Pointer; uncomprLen : LongInt);
+var err: Integer;
+    d_stream: z_stream; (* decompression stream *)
+begin
+  StrCopy(PChar(uncompr), 'garbage');
+
+  d_stream.zalloc := NIL;
+  d_stream.zfree := NIL;
+  d_stream.opaque := NIL;
+
+  d_stream.next_in := compr;
+  d_stream.avail_in := 2; (* just read the zlib header *)
+
+  err := inflateInit(d_stream);
+  CHECK_ERR(err, 'inflateInit');
+
+  d_stream.next_out := uncompr;
+  d_stream.avail_out := Integer(uncomprLen);
+
+  inflate(d_stream, Z_NO_FLUSH);
+  CHECK_ERR(err, 'inflate');
+
+  d_stream.avail_in := Integer(comprLen-2);   (* read all compressed data *)
+  err := inflateSync(d_stream);               (* but skip the damaged part *)
+  CHECK_ERR(err, 'inflateSync');
+
+  err := inflate(d_stream, Z_FINISH);
+  if err <> Z_DATA_ERROR then
+    EXIT_ERR('inflate should report DATA_ERROR');
+    (* Because of incorrect adler32 *)
+
+  err := inflateEnd(d_stream);
+  CHECK_ERR(err, 'inflateEnd');
+
+  WriteLn('after inflateSync(): hel', PChar(uncompr));
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test deflate with preset dictionary
+ *)
+{$IFDEF TEST_DICT}
+procedure test_dict_deflate(compr: Pointer; comprLen: LongInt);
+var c_stream: z_stream; (* compression stream *)
+    err: Integer;
+begin
+  c_stream.zalloc := NIL;
+  c_stream.zfree := NIL;
+  c_stream.opaque := NIL;
+
+  err := deflateInit(c_stream, Z_BEST_COMPRESSION);
+  CHECK_ERR(err, 'deflateInit');
+
+  err := deflateSetDictionary(c_stream, dictionary, StrLen(dictionary));
+  CHECK_ERR(err, 'deflateSetDictionary');
+
+  dictId := c_stream.adler;
+  c_stream.next_out := compr;
+  c_stream.avail_out := Integer(comprLen);
+
+  c_stream.next_in := hello;
+  c_stream.avail_in := StrLen(hello)+1;
+
+  err := deflate(c_stream, Z_FINISH);
+  if err <> Z_STREAM_END then
+    EXIT_ERR('deflate should report Z_STREAM_END');
+
+  err := deflateEnd(c_stream);
+  CHECK_ERR(err, 'deflateEnd');
+end;
+{$ENDIF}
+
+(* ===========================================================================
+ * Test inflate with a preset dictionary
+ *)
+{$IFDEF TEST_DICT}
+procedure test_dict_inflate(compr: Pointer; comprLen: LongInt;
+                            uncompr: Pointer; uncomprLen: LongInt);
+var err: Integer;
+    d_stream: z_stream; (* decompression stream *)
+begin
+  StrCopy(PChar(uncompr), 'garbage');
+
+  d_stream.zalloc := NIL;
+  d_stream.zfree := NIL;
+  d_stream.opaque := NIL;
+
+  d_stream.next_in := compr;
+  d_stream.avail_in := Integer(comprLen);
+
+  err := inflateInit(d_stream);
+  CHECK_ERR(err, 'inflateInit');
+
+  d_stream.next_out := uncompr;
+  d_stream.avail_out := Integer(uncomprLen);
+
+  while TRUE do
+  begin
+    err := inflate(d_stream, Z_NO_FLUSH);
+    if err = Z_STREAM_END then
+      break;
+    if err = Z_NEED_DICT then
+    begin
+      if d_stream.adler <> dictId then
+        EXIT_ERR('unexpected dictionary');
+      err := inflateSetDictionary(d_stream, dictionary, StrLen(dictionary));
+    end;
+    CHECK_ERR(err, 'inflate with dict');
+  end;
+
+  err := inflateEnd(d_stream);
+  CHECK_ERR(err, 'inflateEnd');
+
+  if StrComp(PChar(uncompr), hello) <> 0 then
+    EXIT_ERR('bad inflate with dict')
+  else
+    WriteLn('inflate with dictionary: ', PChar(uncompr));
+end;
+{$ENDIF}
+
+var compr, uncompr: Pointer;
+    comprLen, uncomprLen: LongInt;
+
+begin
+  if zlibVersion^ <> ZLIB_VERSION[1] then
+    EXIT_ERR('Incompatible zlib version');
+
+  WriteLn('zlib version: ', zlibVersion);
+  WriteLn('zlib compile flags: ', Format('0x%x', [zlibCompileFlags]));
+
+  comprLen := 10000 * SizeOf(Integer); (* don't overflow on MSDOS *)
+  uncomprLen := comprLen;
+  GetMem(compr, comprLen);
+  GetMem(uncompr, uncomprLen);
+  if (compr = NIL) or (uncompr = NIL) then
+    EXIT_ERR('Out of memory');
+  (* compr and uncompr are cleared to avoid reading uninitialized
+   * data and to ensure that uncompr compresses well.
+   *)
+  FillChar(compr^, comprLen, 0);
+  FillChar(uncompr^, uncomprLen, 0);
+
+  {$IFDEF TEST_COMPRESS}
+  WriteLn('** Testing compress');
+  test_compress(compr, comprLen, uncompr, uncomprLen);
+  {$ENDIF}
+
+  {$IFDEF TEST_GZIO}
+  WriteLn('** Testing gzio');
+  if ParamCount >= 1 then
+    test_gzio(ParamStr(1), uncompr, uncomprLen)
+  else
+    test_gzio(TESTFILE, uncompr, uncomprLen);
+  {$ENDIF}
+
+  {$IFDEF TEST_DEFLATE}
+  WriteLn('** Testing deflate with small buffers');
+  test_deflate(compr, comprLen);
+  {$ENDIF}
+  {$IFDEF TEST_INFLATE}
+  WriteLn('** Testing inflate with small buffers');
+  test_inflate(compr, comprLen, uncompr, uncomprLen);
+  {$ENDIF}
+
+  {$IFDEF TEST_DEFLATE}
+  WriteLn('** Testing deflate with large buffers');
+  test_large_deflate(compr, comprLen, uncompr, uncomprLen);
+  {$ENDIF}
+  {$IFDEF TEST_INFLATE}
+  WriteLn('** Testing inflate with large buffers');
+  test_large_inflate(compr, comprLen, uncompr, uncomprLen);
+  {$ENDIF}
+
+  {$IFDEF TEST_FLUSH}
+  WriteLn('** Testing deflate with full flush');
+  test_flush(compr, comprLen);
+  {$ENDIF}
+  {$IFDEF TEST_SYNC}
+  WriteLn('** Testing inflateSync');
+  test_sync(compr, comprLen, uncompr, uncomprLen);
+  {$ENDIF}
+  comprLen := uncomprLen;
+
+  {$IFDEF TEST_DICT}
+  WriteLn('** Testing deflate and inflate with preset dictionary');
+  test_dict_deflate(compr, comprLen);
+  test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
+  {$ENDIF}
+
+  FreeMem(compr, comprLen);
+  FreeMem(uncompr, uncomprLen);
+end.
--- a/contrib/pascal/readme.txt
+++ b/contrib/pascal/readme.txt
@@ -0,0 +1,76 @@
+
+This directory contains a Pascal (Delphi, Kylix) interface to the
+zlib data compression library.
+
+
+Directory listing
+=================
+
+zlibd32.mak     makefile for Borland C++
+example.pas     usage example of zlib
+zlibpas.pas     the Pascal interface to zlib
+readme.txt      this file
+
+
+Compatibility notes
+===================
+
+- Although the name "zlib" would have been more normal for the
+  zlibpas unit, this name is already taken by Borland's ZLib unit.
+  This is somehow unfortunate, because that unit is not a genuine
+  interface to the full-fledged zlib functionality, but a suite of
+  class wrappers around zlib streams.  Other essential features,
+  such as checksums, are missing.
+  It would have been more appropriate for that unit to have a name
+  like "ZStreams", or something similar.
+
+- The C and zlib-supplied types int, uInt, long, uLong, etc. are
+  translated directly into Pascal types of similar sizes (Integer,
+  LongInt, etc.), to avoid namespace pollution.  In particular,
+  there is no conversion of unsigned int into a Pascal unsigned
+  integer.  The Word type is non-portable and has the same size
+  (16 bits) both in a 16-bit and in a 32-bit environment, unlike
+  Integer.  Even if there is a 32-bit Cardinal type, there is no
+  real need for unsigned int in zlib under a 32-bit environment.
+
+- Except for the callbacks, the zlib function interfaces are
+  assuming the calling convention normally used in Pascal
+  (__pascal for DOS and Windows16, __fastcall for Windows32).
+  Since the cdecl keyword is used, the old Turbo Pascal does
+  not work with this interface.
+
+- The gz* function interfaces are not translated, to avoid
+  interfacing problems with the C runtime library.  Besides,
+    gzprintf(gzFile file, const char *format, ...)
+  cannot be translated into Pascal.
+
+
+Legal issues
+============
+
+The zlibpas interface is:
+  Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler.
+  Copyright (C) 1998 by Bob Dellaca.
+  Copyright (C) 2003 by Cosmin Truta.
+
+The example program is:
+  Copyright (C) 1995-2003 by Jean-loup Gailly.
+  Copyright (C) 1998,1999,2000 by Jacques Nomssi Nzali.
+  Copyright (C) 2003 by Cosmin Truta.
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the author be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
--- a/contrib/pascal/zlibd32.mak
+++ b/contrib/pascal/zlibd32.mak
@@ -0,0 +1,93 @@
+# Makefile for zlib
+# For use with Delphi and C++ Builder under Win32
+# Updated for zlib 1.2.x by Cosmin Truta
+
+# ------------ Borland C++ ------------
+
+# This project uses the Delphi (fastcall/register) calling convention:
+LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl
+
+CC = bcc32
+LD = bcc32
+AR = tlib
+# do not use "-pr" in CFLAGS
+CFLAGS = -a -d -k- -O2 $(LOC)
+LDFLAGS =
+
+
+# variables
+ZLIB_LIB = zlib.lib
+
+OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
+OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
+OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infback.obj
+OBJP2 = +inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
+
+
+# targets
+all: $(ZLIB_LIB) example.exe minigzip.exe
+
+.c.obj:
+	$(CC) -c $(CFLAGS) $*.c
+
+adler32.obj: adler32.c zlib.h zconf.h
+
+compress.obj: compress.c zlib.h zconf.h
+
+crc32.obj: crc32.c zlib.h zconf.h crc32.h
+
+deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
+
+gzio.obj: gzio.c zutil.h zlib.h zconf.h
+
+infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h inffixed.h
+
+inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h
+
+inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h inffixed.h
+
+inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
+
+trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
+
+uncompr.obj: uncompr.c zlib.h zconf.h
+
+zutil.obj: zutil.c zutil.h zlib.h zconf.h
+
+example.obj: example.c zlib.h zconf.h
+
+minigzip.obj: minigzip.c zlib.h zconf.h
+
+
+# For the sake of the old Borland make,
+# the command line is cut to fit in the MS-DOS 128 byte limit:
+$(ZLIB_LIB): $(OBJ1) $(OBJ2)
+	-del $(ZLIB_LIB)
+	$(AR) $(ZLIB_LIB) $(OBJP1)
+	$(AR) $(ZLIB_LIB) $(OBJP2)
+
+
+# testing
+test: example.exe minigzip.exe
+	example
+	echo hello world | minigzip | minigzip -d
+
+example.exe: example.obj $(ZLIB_LIB)
+	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
+
+minigzip.exe: minigzip.obj $(ZLIB_LIB)
+	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
+
+
+# cleanup
+clean:
+	-del *.obj
+	-del *.exe
+	-del *.lib
+	-del *.tds
+	-del zlib.bak
+	-del foo.gz
+
--- a/contrib/pascal/zlibpas.pas
+++ b/contrib/pascal/zlibpas.pas
@@ -0,0 +1,236 @@
+(* zlibpas -- Pascal interface to the zlib data compression library
+ *
+ * Copyright (C) 2003 Cosmin Truta.
+ * Derived from original sources by Bob Dellaca.
+ * For conditions of distribution and use, see copyright notice in readme.txt
+ *)
+
+unit zlibpas;
+
+interface
+
+const
+  ZLIB_VERSION = '1.2.1';
+
+type
+  alloc_func = function(opaque: Pointer; items, size: Integer): Pointer;
+                 cdecl;
+  free_func  = procedure(opaque, address: Pointer);
+                 cdecl;
+
+  in_func    = function(opaque: Pointer; var buf: PByte): Integer;
+                 cdecl;
+  out_func   = function(opaque: Pointer; buf: PByte; size: Integer): Integer;
+                 cdecl;
+
+  z_streamp = ^z_stream;
+  z_stream = packed record
+    next_in: PChar;       (* next input byte *)
+    avail_in: Integer;    (* number of bytes available at next_in *)
+    total_in: LongInt;    (* total nb of input bytes read so far *)
+
+    next_out: PChar;      (* next output byte should be put there *)
+    avail_out: Integer;   (* remaining free space at next_out *)
+    total_out: LongInt;   (* total nb of bytes output so far *)
+
+    msg: PChar;           (* last error message, NULL if no error *)
+    state: Pointer;       (* not visible by applications *)
+
+    zalloc: alloc_func;   (* used to allocate the internal state *)
+    zfree: free_func;     (* used to free the internal state *)
+    opaque: Pointer;      (* private data object passed to zalloc and zfree *)
+
+    data_type: Integer;   (* best guess about the data type: ascii or binary *)
+    adler: LongInt;       (* adler32 value of the uncompressed data *)
+    reserved: LongInt;    (* reserved for future use *)
+  end;
+
+(* constants *)
+const
+  Z_NO_FLUSH      = 0;
+  Z_PARTIAL_FLUSH = 1;
+  Z_SYNC_FLUSH    = 2;
+  Z_FULL_FLUSH    = 3;
+  Z_FINISH        = 4;
+
+  Z_OK            =  0;
+  Z_STREAM_END    =  1;
+  Z_NEED_DICT     =  2;
+  Z_ERRNO         = -1;
+  Z_STREAM_ERROR  = -2;
+  Z_DATA_ERROR    = -3;
+  Z_MEM_ERROR     = -4;
+  Z_BUF_ERROR     = -5;
+  Z_VERSION_ERROR = -6;
+
+  Z_NO_COMPRESSION       =  0;
+  Z_BEST_SPEED           =  1;
+  Z_BEST_COMPRESSION     =  9;
+  Z_DEFAULT_COMPRESSION  = -1;
+
+  Z_FILTERED            = 1;
+  Z_HUFFMAN_ONLY        = 2;
+  Z_RLE                 = 3;
+  Z_DEFAULT_STRATEGY    = 0;
+
+  Z_BINARY   = 0;
+  Z_ASCII    = 1;
+  Z_UNKNOWN  = 2;
+
+  Z_DEFLATED = 8;
+
+(* basic functions *)
+function zlibVersion: PChar;
+function deflateInit(var strm: z_stream; level: Integer): Integer;
+function deflate(var strm: z_stream; flush: Integer): Integer;
+function deflateEnd(var strm: z_stream): Integer;
+function inflateInit(var strm: z_stream): Integer;
+function inflate(var strm: z_stream; flush: Integer): Integer;
+function inflateEnd(var strm: z_stream): Integer;
+
+(* advanced functions *)
+function deflateInit2(var strm: z_stream; level, method, windowBits,
+                      memLevel, strategy: Integer): Integer;
+function deflateSetDictionary(var strm: z_stream; const dictionary: PChar;
+                              dictLength: Integer): Integer;
+function deflateCopy(var dest, source: z_stream): Integer;
+function deflateReset(var strm: z_stream): Integer;
+function deflateParams(var strm: z_stream; level, strategy: Integer): Integer;
+function deflateBound(var strm: z_stream; sourceLen: LongInt): LongInt;
+function deflatePrime(var strm: z_stream; bits, value: Integer): Integer;
+function inflateInit2(var strm: z_stream; windowBits: Integer): Integer;
+function inflateSetDictionary(var strm: z_stream; const dictionary: PChar;
+                              dictLength: Integer): Integer;
+function inflateSync(var strm: z_stream): Integer;
+function inflateCopy(var dest, source: z_stream): Integer;
+function inflateReset(var strm: z_stream): Integer;
+function inflateBackInit(var strm: z_stream;
+                         windowBits: Integer; window: PChar): Integer;
+function inflateBack(var strm: z_stream; in_fn: in_func; in_desc: Pointer;
+                     out_fn: out_func; out_desc: Pointer): Integer;
+function inflateBackEnd(var strm: z_stream): Integer;
+function zlibCompileFlags: LongInt;
+
+(* utility functions *)
+function compress(dest: PChar; var destLen: LongInt;
+                  const source: PChar; sourceLen: LongInt): Integer;
+function compress2(dest: PChar; var destLen: LongInt;
+                  const source: PChar; sourceLen: LongInt;
+                  level: Integer): Integer;
+function compressBound(sourceLen: LongInt): LongInt;
+function uncompress(dest: PChar; var destLen: LongInt;
+                    const source: PChar; sourceLen: LongInt): Integer;
+
+(* checksum functions *)
+function adler32(adler: LongInt; const buf: PChar; len: Integer): LongInt;
+function crc32(crc: LongInt; const buf: PChar; len: Integer): LongInt;
+
+(* various hacks, don't look :) *)
+function deflateInit_(var strm: z_stream; level: Integer;
+                      const version: PChar; stream_size: Integer): Integer;
+function inflateInit_(var strm: z_stream; const version: PChar;
+                      stream_size: Integer): Integer;
+function deflateInit2_(var strm: z_stream;
+                       level, method, windowBits, memLevel, strategy: Integer;
+                       const version: PChar; stream_size: Integer): Integer;
+function inflateInit2_(var strm: z_stream; windowBits: Integer;
+                       const version: PChar; stream_size: Integer): Integer;
+function inflateBackInit_(var strm: z_stream;
+                          windowBits: Integer; window: PChar;
+                          const version: PChar; stream_size: Integer): Integer;
+
+
+implementation
+
+{$L adler32.obj}
+{$L compress.obj}
+{$L crc32.obj}
+{$L deflate.obj}
+{$L infback.obj}
+{$L inffast.obj}
+{$L inflate.obj}
+{$L inftrees.obj}
+{$L trees.obj}
+{$L uncompr.obj}
+{$L zutil.obj}
+
+function adler32; external;
+function compress; external;
+function compress2; external;
+function compressBound; external;
+function crc32; external;
+function deflate; external;
+function deflateBound; external;
+function deflateCopy; external;
+function deflateEnd; external;
+function deflateInit_; external;
+function deflateInit2_; external;
+function deflateParams; external;
+function deflatePrime; external;
+function deflateReset; external;
+function deflateSetDictionary; external;
+function inflate; external;
+function inflateBack; external;
+function inflateBackEnd; external;
+function inflateBackInit_; external;
+function inflateCopy; external;
+function inflateEnd; external;
+function inflateInit_; external;
+function inflateInit2_; external;
+function inflateReset; external;
+function inflateSetDictionary; external;
+function inflateSync; external;
+function uncompress; external;
+function zlibCompileFlags; external;
+function zlibVersion; external;
+
+function deflateInit(var strm: z_stream; level: Integer): Integer;
+begin
+  Result := deflateInit_(strm, level, ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function deflateInit2(var strm: z_stream; level, method, windowBits, memLevel,
+                      strategy: Integer): Integer;
+begin
+  Result := deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
+                          ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function inflateInit(var strm: z_stream): Integer;
+begin
+  Result := inflateInit_(strm, ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function inflateInit2(var strm: z_stream; windowBits: Integer): Integer;
+begin
+  Result := inflateInit2_(strm, windowBits, ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function inflateBackInit(var strm: z_stream;
+                         windowBits: Integer; window: PChar): Integer;
+begin
+  Result := inflateBackInit_(strm, windowBits, window,
+                             ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function _malloc(Size: Integer): Pointer; cdecl;
+begin
+  GetMem(Result, Size);
+end;
+
+procedure _free(Block: Pointer); cdecl;
+begin
+  FreeMem(Block);
+end;
+
+procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
+begin
+  FillChar(P^, count, B);
+end;
+
+procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
+begin
+  Move(source^, dest^, count);
+end;
+
+end.
--- a/contrib/puff/README
+++ b/contrib/puff/README
@@ -29,10 +29,10 @@ applications, but if you must ...

 Include puff.h in your code, which provides this prototype:

-int puff(unsigned char *dest,		/* pointer to destination pointer */
-         unsigned long *destlen,	/* amount of output space */
-         unsigned char *source,		/* pointer to source data pointer */
-         unsigned long *sourcelen);	/* amount of input available */
+int puff(unsigned char *dest,           /* pointer to destination pointer */
+         unsigned long *destlen,        /* amount of output space */
+         unsigned char *source,         /* pointer to source data pointer */
+         unsigned long *sourcelen);     /* amount of input available */

 Then you can call puff() to decompress a deflate stream that is in memory in
 its entirety at source, to a sufficiently sized block of memory for the
--- a/contrib/puff/puff.c
+++ b/contrib/puff/puff.c
@@ -1,8 +1,8 @@
 /*
 * puff.c
- * Copyright (C) 2002, 2003 Mark Adler
+ * Copyright (C) 2002-2004 Mark Adler
 * For conditions of distribution and use, see copyright notice in puff.h
- * version 1.7, 3 Mar 2003
+ * version 1.8, 9 Jan 2004
 *
 * puff.c is a simple inflate written to be an unambiguous way to specify the
 * deflate format.  It is not written for speed but rather simplicity.  As a
@@ -58,8 +58,9 @@
 *                      - Add FIXLCODES #define
 * 1.5   6 Apr 2002     - Minor comment fixes
 * 1.6   7 Aug 2002     - Minor format changes
- * 1.7   3 Mar 2002     - Added test code for distribution
+ * 1.7   3 Mar 2003     - Added test code for distribution
 *                      - Added zlib-like license
+ * 1.8   9 Jan 2004     - Added some comments on no distance codes case
 */

 #include <setjmp.h>             /* for setjmp(), longjmp(), and jmp_buf */
@@ -577,6 +578,9 @@ local int fixed(struct state *s)
 *   block is fewer bits), but it is allowed by the format.  So incomplete
 *   literal/length codes of one symbol should also be permitted.
 *
+ * - If there are only literal codes and no lengths, then there are no distance
+ *   codes.  This is represented by one distance code with zero bits.
+ *
 * - The list of up to 286 length/literal lengths and up to 30 distance lengths
 *   are themselves compressed using Huffman codes and run-length encoding.  In
 *   the list of code lengths, a 0 symbol means no code, a 1..15 symbol means
--- a/contrib/puff/puff.h
+++ b/contrib/puff/puff.h
@@ -18,7 +18,7 @@
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

-  Mark Adler	madler@alumni.caltech.edu
+  Mark Adler    madler@alumni.caltech.edu
 */


--- a/contrib/testzlib/testzlib.vcproj
+++ b/contrib/testzlib/testzlib.vcproj
@@ -19,7 +19,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE"
 				MinimalRebuild="TRUE"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="5"
@@ -63,7 +63,7 @@
 				Optimization="2"
 				InlineFunctionExpansion="1"
 				OmitFramePointers="TRUE"
-				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE"
 				StringPooling="TRUE"
 				RuntimeLibrary="4"
 				EnableFunctionLevelLinking="TRUE"
@@ -116,7 +116,7 @@
 			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">
 		</Filter>
 		<File
-			RelativePath="zlib.lib">
+			RelativePath="zlibwapi.lib">
 		</File>
 	</Files>
 	<Globals>
--- a/contrib/untgz/Makefile
+++ b/contrib/untgz/Makefile
@@ -1,14 +1,14 @@
 CC=cc
 CFLAGS=-g

-untgz: untgz.o  ../../libz.a
-	$(CC) $(CFLAGS) -o untgz  untgz.o -L../.. -lz
+untgz: untgz.o ../../libz.a
+	$(CC) $(CFLAGS) -o untgz untgz.o -L../.. -lz

 untgz.o: untgz.c ../../zlib.h
 	$(CC) $(CFLAGS) -c -I../.. untgz.c

 ../../libz.a:
-	cd ../..; make
+	cd ../..; ./configure; make

 clean:
 	rm -f untgz untgz.o *~
--- a/contrib/untgz/Makefile.msc
+++ b/contrib/untgz/Makefile.msc
@@ -0,0 +1,17 @@
+CC=cl
+CFLAGS=-MD
+
+untgz.exe: untgz.obj ..\..\zlib.lib
+	$(CC) $(CFLAGS) untgz.obj ..\..\zlib.lib
+
+untgz.obj: untgz.c ..\..\zlib.h
+	$(CC) $(CFLAGS) -c -I..\.. untgz.c
+
+..\..\zlib.lib:
+	cd ..\..
+	$(MAKE) -f win32\makefile.msc
+	cd contrib\untgz
+
+clean:
+	-del untgz.obj
+	-del untgz.exe
--- a/contrib/untgz/makefile.w32
+++ b/contrib/untgz/makefile.w32
@@ -1,63 +0,0 @@
-# Makefile for zlib.  Modified for mingw32
-# For conditions of distribution and use, see copyright notice in zlib.h 
-
-# To compile, 
-# 
-#   make -fmakefile.w32
-# 
-
-CC=gcc
-
-# Generate dependencies (see end of the file)
-
-CPPFLAGS=-MMD 
-
-#CFLAGS=-MMD -O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-MMD -g -DDEBUG
-CFLAGS=-O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
-             -Wstrict-prototypes -Wmissing-prototypes
-
-# If cp.exe is not found, replace with copy /Y .
-CP=cp -f
-
-# The default value of RM is "rm -f."  
-# If "rm.exe" is not found, uncomment:
-# RM=del
-
-LD=gcc
-LDLIBS=-L. -lz
-LDFLAGS=-s
-
-
-INCL=zlib.h zconf.h
-LIBS=libz.a
-
-AR=ar rcs
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
-       zutil.o inflate.o infblock.o inftrees.o infcodes.o infutil.o \
-       inffast.o
-
-TEST_OBJS = minigzip.o untgz.o
-
-all: minigzip.exe untgz.exe
-
-rebuild:	clean	all
-
-libz.a: $(OBJS)
-	$(AR) $@ $(OBJS)
-
-%.exe : %.o $(LIBS)
-	$(LD) $(LDFLAGS) -o $@ $< $(LDLIBS)
-
-.PHONY : clean
-
-clean:
-	$(RM) *.d *.o *.exe libz.a foo.gz
-
-DEPS := $(wildcard *.d)
-ifneq ($(DEPS),)
-include $(DEPS)
-endif
-
--- a/contrib/untgz/untgz.c
+++ b/contrib/untgz/untgz.c
@@ -1,8 +1,9 @@
 /*
- * untgz.c -- Display contents and/or extract file from
- * a gzip'd TAR file
+ * untgz.c -- Display contents and extract files from a gzip'd TAR file
+ *
 * written by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
 * adaptation to Unix by Jean-loup Gailly <jloup@gzip.org>
+ * various fixes by Cosmin Truta <cosmint@cs.ubbcluj.ro>
 */

 #include <stdio.h>
@@ -10,7 +11,9 @@
 #include <string.h>
 #include <time.h>
 #include <errno.h>
-#include <fcntl.h>
+
+#include "zlib.h"
+
 #ifdef unix
 # include <unistd.h>
 #else
@@ -18,58 +21,54 @@
 # include <io.h>
 #endif

-#include "zlib.h"
-
 #ifdef WIN32
+#include <windows.h>
 #  ifndef F_OK
-#    define F_OK (0)
+#    define F_OK  0
 #  endif
+#  define mkdir(dirname,mode)   _mkdir(dirname)
 #  ifdef _MSC_VER
-#    define mkdir(dirname,mode) _mkdir(dirname)
 #    define strdup(str)         _strdup(str)
-#    define unlink(fn)          _unlink(fn)
 #    define access(path,mode)   _access(path,mode)
-#  else
-#    define mkdir(dirname,mode) _mkdir(dirname)
 #  endif
 #else
 #  include <utime.h>
 #endif


-/* Values used in typeflag field.  */
+/* values used in typeflag field */

-#define REGTYPE	 '0'		/* regular file */
-#define AREGTYPE '\0'		/* regular file */
-#define LNKTYPE  '1'		/* link */
-#define SYMTYPE  '2'		/* reserved */
-#define CHRTYPE  '3'		/* character special */
-#define BLKTYPE  '4'		/* block special */
-#define DIRTYPE  '5'		/* directory */
-#define FIFOTYPE '6'		/* FIFO special */
-#define CONTTYPE '7'		/* reserved */
+#define REGTYPE  '0'            /* regular file */
+#define AREGTYPE '\0'           /* regular file */
+#define LNKTYPE  '1'            /* link */
+#define SYMTYPE  '2'            /* reserved */
+#define CHRTYPE  '3'            /* character special */
+#define BLKTYPE  '4'            /* block special */
+#define DIRTYPE  '5'            /* directory */
+#define FIFOTYPE '6'            /* FIFO special */
+#define CONTTYPE '7'            /* reserved */

 #define BLOCKSIZE 512

 struct tar_header
-{				/* byte offset */
-  char name[100];		/*   0 */
-  char mode[8];			/* 100 */
-  char uid[8];			/* 108 */
-  char gid[8];			/* 116 */
-  char size[12];		/* 124 */
-  char mtime[12];		/* 136 */
-  char chksum[8];		/* 148 */
-  char typeflag;		/* 156 */
-  char linkname[100];		/* 157 */
-  char magic[6];		/* 257 */
-  char version[2];		/* 263 */
-  char uname[32];		/* 265 */
-  char gname[32];		/* 297 */
-  char devmajor[8];		/* 329 */
-  char devminor[8];		/* 337 */
-  char prefix[155];		/* 345 */
-				/* 500 */
+{                               /* byte offset */
+  char name[100];               /*   0 */
+  char mode[8];                 /* 100 */
+  char uid[8];                  /* 108 */
+  char gid[8];                  /* 116 */
+  char size[12];                /* 124 */
+  char mtime[12];               /* 136 */
+  char chksum[8];               /* 148 */
+  char typeflag;                /* 156 */
+  char linkname[100];           /* 157 */
+  char magic[6];                /* 257 */
+  char version[2];              /* 263 */
+  char uname[32];               /* 265 */
+  char gname[32];               /* 297 */
+  char devmajor[8];             /* 329 */
+  char devminor[8];             /* 337 */
+  char prefix[155];             /* 345 */
+                                /* 500 */
 };

 union tar_buffer {
@@ -77,137 +76,190 @@ union tar_buffer {
  struct tar_header  header;
 };

-enum { TGZ_EXTRACT = 0, TGZ_LIST };
+enum { TGZ_EXTRACT, TGZ_LIST, TGZ_INVALID };

-static char *TGZfname	OF((const char *));
-void TGZnotfound	OF((const char *));
+char *TGZfname          OF((const char *));
+void TGZnotfound        OF((const char *));

-int getoct		OF((char *, int));
-char *strtime		OF((time_t *));
-int ExprMatch		OF((char *,char *));
+int getoct              OF((char *, int));
+char *strtime           OF((time_t *));
+int setfiletime         OF((char *, time_t));
+int ExprMatch           OF((char *, char *));

-int makedir		OF((char *));
-int matchname		OF((int,int,char **,char *));
+int makedir             OF((char *));
+int matchname           OF((int, int, char **, char *));

-void error		OF((const char *));
-int  tar		OF((gzFile, int, int, int, char **));
+void error              OF((const char *));
+int tar                 OF((gzFile, int, int, int, char **));

-void help		OF((int));
-int main		OF((int, char **));
+void help               OF((int));
+int main                OF((int, char **));

 char *prog;

-/* This will give a benign warning */
+const char *TGZsuffix[] = { "\0", ".tar", ".tar.gz", ".taz", ".tgz", NULL };

-static char *TGZprefix[] = { "\0", ".tgz", ".tar.gz", ".tar", NULL };
+/* return the file name of the TGZ archive */
+/* or NULL if it does not exist */

-/* Return the real name of the TGZ archive */
-/* or NULL if it does not exist. */
-
-static char *TGZfname OF((const char *fname))
+char *TGZfname (const char *arcname)
 {
  static char buffer[1024];
  int origlen,i;

-  strcpy(buffer,fname);
+  strcpy(buffer,arcname);
  origlen = strlen(buffer);

-  for (i=0; TGZprefix[i]; i++)
+  for (i=0; TGZsuffix[i]; i++)
    {
-       strcpy(buffer+origlen,TGZprefix[i]);
+       strcpy(buffer+origlen,TGZsuffix[i]);
       if (access(buffer,F_OK) == 0)
         return buffer;
    }
  return NULL;
 }

+
 /* error message for the filename */

-void TGZnotfound OF((const char *fname))
+void TGZnotfound (const char *arcname)
 {
  int i;

-  fprintf(stderr,"%s : couldn't find ",prog);
-  for (i=0;TGZprefix[i];i++)
-    fprintf(stderr,(TGZprefix[i+1]) ? "%s%s, " : "or %s%s\n",
-            fname,
-            TGZprefix[i]);
+  fprintf(stderr,"%s: Couldn't find ",prog);
+  for (i=0;TGZsuffix[i];i++)
+    fprintf(stderr,(TGZsuffix[i+1]) ? "%s%s, " : "or %s%s\n",
+            arcname,
+            TGZsuffix[i]);
  exit(1);
 }


-/* help functions */
+/* convert octal digits to int */
+/* on error return -1 */

-int getoct(char *p,int width)
+int getoct (char *p,int width)
 {
  int result = 0;
  char c;

-  while (width --)
+  while (width--)
    {
      c = *p++;
-      if (c == ' ')
-	continue;
      if (c == 0)
-	break;
+        break;
+      if (c == ' ')
+        continue;
+      if (c < '0' || c > '7')
+        return -1;
      result = result * 8 + (c - '0');
    }
  return result;
 }

+
+/* convert time_t to string */
+/* use the "YYYY/MM/DD hh:mm:ss" format */
+
 char *strtime (time_t *t)
 {
  struct tm   *local;
  static char result[32];

  local = localtime(t);
-  sprintf(result,"%2d/%02d/%4d %02d:%02d:%02d",
-	  local->tm_mday, local->tm_mon+1, local->tm_year+1900,
-	  local->tm_hour, local->tm_min,   local->tm_sec);
+  sprintf(result,"%4d/%02d/%02d %02d:%02d:%02d",
+          local->tm_year+1900, local->tm_mon+1, local->tm_mday,
+          local->tm_hour, local->tm_min, local->tm_sec);
  return result;
 }


+/* set file time */
+
+int setfiletime (char *fname,time_t ftime)
+{
+#ifdef WIN32
+  static int isWinNT = -1;
+  SYSTEMTIME st;
+  FILETIME locft, modft;
+  struct tm *loctm;
+  HANDLE hFile;
+  int result;
+
+  loctm = localtime(&ftime);
+  if (loctm == NULL)
+    return -1;
+
+  st.wYear         = (WORD)loctm->tm_year + 1900;
+  st.wMonth        = (WORD)loctm->tm_mon + 1;
+  st.wDayOfWeek    = (WORD)loctm->tm_wday;
+  st.wDay          = (WORD)loctm->tm_mday;
+  st.wHour         = (WORD)loctm->tm_hour;
+  st.wMinute       = (WORD)loctm->tm_min;
+  st.wSecond       = (WORD)loctm->tm_sec;
+  st.wMilliseconds = 0;
+  if (!SystemTimeToFileTime(&st, &locft) ||
+      !LocalFileTimeToFileTime(&locft, &modft))
+    return -1;
+
+  if (isWinNT < 0)
+    isWinNT = (GetVersion() < 0x80000000) ? 1 : 0;
+  hFile = CreateFile(fname, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
+                     (isWinNT ? FILE_FLAG_BACKUP_SEMANTICS : 0),
+                     NULL);
+  if (hFile == INVALID_HANDLE_VALUE)
+    return -1;
+  result = SetFileTime(hFile, NULL, NULL, &modft) ? 0 : -1;
+  CloseHandle(hFile);
+  return result;
+#else
+  struct utimbuf settime;
+
+  settime.actime = settime.modtime = ftime;
+  return utime(fname,&settime);
+#endif
+}
+
+
 /* regular expression matching */

 #define ISSPECIAL(c) (((c) == '*') || ((c) == '/'))

-int ExprMatch(char *string,char *expr)
+int ExprMatch (char *string,char *expr)
 {
  while (1)
    {
      if (ISSPECIAL(*expr))
-	{
-	  if (*expr == '/')
-	    {
-	      if (*string != '\\' && *string != '/')
-		return 0;
-	      string ++; expr++;
-	    }
-	  else if (*expr == '*')
-	    {
-	      if (*expr ++ == 0)
-		return 1;
-	      while (*++string != *expr)
-		if (*string == 0)
-		  return 0;
-	    }
-	}
+        {
+          if (*expr == '/')
+            {
+              if (*string != '\\' && *string != '/')
+                return 0;
+              string ++; expr++;
+            }
+          else if (*expr == '*')
+            {
+              if (*expr ++ == 0)
+                return 1;
+              while (*++string != *expr)
+                if (*string == 0)
+                  return 0;
+            }
+        }
      else
-	{
-	  if (*string != *expr)
-	    return 0;
-	  if (*expr++ == 0)
-	    return 1;
-	  string++;
-	}
+        {
+          if (*string != *expr)
+            return 0;
+          if (*expr++ == 0)
+            return 1;
+          string++;
+        }
    }
 }

-/* recursive make directory */
-/* abort if you get an ENOENT errno somewhere in the middle */
-/* e.g. ignore error "mkdir on existing directory" */
-/* */
+
+/* recursive mkdir */
+/* abort on ENOENT; ignore other errors like "directory already exists" */
 /* return 1 if OK */
 /*        0 on error */

@@ -224,7 +276,7 @@ int makedir (char *newdir)
  if (buffer[len-1] == '/') {
    buffer[len-1] = '\0';
  }
-  if (mkdir(buffer, 0775) == 0)
+  if (mkdir(buffer, 0755) == 0)
    {
      free(buffer);
      return 1;
@@ -236,26 +288,27 @@ int makedir (char *newdir)
      char hold;

      while(*p && *p != '\\' && *p != '/')
-	p++;
+        p++;
      hold = *p;
      *p = 0;
-      if ((mkdir(buffer, 0775) == -1) && (errno == ENOENT))
-	{
-	  fprintf(stderr,"%s: couldn't create directory %s\n",prog,buffer);
-	  free(buffer);
-	  return 0;
-	}
+      if ((mkdir(buffer, 0755) == -1) && (errno == ENOENT))
+        {
+          fprintf(stderr,"%s: Couldn't create directory %s\n",prog,buffer);
+          free(buffer);
+          return 0;
+        }
      if (hold == 0)
-	break;
+        break;
      *p++ = hold;
    }
  free(buffer);
  return 1;
 }

+
 int matchname (int arg,int argc,char **argv,char *fname)
 {
-  if (arg == argc)		/* no arguments given (untgz tgzarchive) */
+  if (arg == argc)      /* no arguments given (untgz tgzarchive) */
    return 1;

  while (arg < argc)
@@ -266,7 +319,7 @@ int matchname (int arg,int argc,char **argv,char *fname)
 }


-/* Tar file list or extract */
+/* tar file list or extract */

 int tar (gzFile in,int action,int arg,int argc,char **argv)
 {
@@ -277,143 +330,138 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
  int    remaining = 0;
  FILE   *outfile = NULL;
  char   fname[BLOCKSIZE];
+  int    tarmode;
  time_t tartime;

  if (action == TGZ_LIST)
-    printf("     day      time     size                       file\n"
-	   " ---------- -------- --------- -------------------------------------\n");
+    printf("    date      time     size                       file\n"
+           " ---------- -------- --------- -------------------------------------\n");
  while (1)
    {
      len = gzread(in, &buffer, BLOCKSIZE);
      if (len < 0)
-	error (gzerror(in, &err));
+        error(gzerror(in, &err));
      /*
       * Always expect complete blocks to process
       * the tar information.
       */
      if (len != BLOCKSIZE)
-	error("gzread: incomplete block read");
+        {
+          action = TGZ_INVALID; /* force error exit */
+          remaining = 0;        /* force I/O cleanup */
+        }

      /*
       * If we have to get a tar header
       */
      if (getheader == 1)
-	{
-	  /*
-	   * if we met the end of the tar
-	   * or the end-of-tar block,
-	   * we are done
-	   */
-	  if ((len == 0)  || (buffer.header.name[0]== 0)) break;
+        {
+          /*
+           * if we met the end of the tar
+           * or the end-of-tar block,
+           * we are done
+           */
+          if ((len == 0) || (buffer.header.name[0] == 0)) break;

-	  tartime = (time_t)getoct(buffer.header.mtime,12);
-	  strcpy(fname,buffer.header.name);
+          tarmode = getoct(buffer.header.mode,8);
+          tartime = (time_t)getoct(buffer.header.mtime,12);
+          if (tarmode == -1 || tartime == (time_t)-1)
+            {
+              buffer.header.name[0] = 0;
+              action = TGZ_INVALID;
+            }

-	  switch (buffer.header.typeflag)
-	    {
-	    case DIRTYPE:
-	      if (action == TGZ_LIST)
-		printf(" %s     <dir> %s\n",strtime(&tartime),fname);
-	      if (action == TGZ_EXTRACT)
-		makedir(fname);
-	      break;
-	    case REGTYPE:
-	    case AREGTYPE:
-	      remaining = getoct(buffer.header.size,12);
-	      if (action == TGZ_LIST)
-		printf(" %s %9d %s\n",strtime(&tartime),remaining,fname);
-	      if (action == TGZ_EXTRACT)
-		{
-		  if ((remaining) && (matchname(arg,argc,argv,fname)))
-		    {
-		      outfile = fopen(fname,"wb");
-		      if (outfile == NULL) {
-			/* try creating directory */
-			char *p = strrchr(fname, '/');
-			if (p != NULL) {
-			  *p = '\0';
-			  makedir(fname);
-			  *p = '/';
-			  outfile = fopen(fname,"wb");
-			}
-		      }
-		      fprintf(stderr,
-			      "%s %s\n",
-			      (outfile) ? "Extracting" : "Couldn't create",
-			      fname);
-		    }
-		  else
-		    outfile = NULL;
-		}
-	      /*
-	       * could have no contents
-	       */
-	      getheader = (remaining) ? 0 : 1;
-	      break;
-	    default:
-	      if (action == TGZ_LIST)
-		printf(" %s     <---> %s\n",strtime(&tartime),fname);
-	      break;
-	    }
-	}
+          strcpy(fname,buffer.header.name);
+
+          switch (buffer.header.typeflag)
+            {
+            case DIRTYPE:
+              if (action == TGZ_LIST)
+                printf(" %s     <dir> %s\n",strtime(&tartime),fname);
+              if (action == TGZ_EXTRACT)
+                {
+                  makedir(fname);
+                  setfiletime(fname,tartime);
+                }
+              break;
+            case REGTYPE:
+            case AREGTYPE:
+              remaining = getoct(buffer.header.size,12);
+              if (remaining == -1)
+                {
+                  action = TGZ_INVALID;
+                  break;
+                }
+              if (action == TGZ_LIST)
+                printf(" %s %9d %s\n",strtime(&tartime),remaining,fname);
+              else if (action == TGZ_EXTRACT)
+                {
+                  if (matchname(arg,argc,argv,fname))
+                    {
+                      outfile = fopen(fname,"wb");
+                      if (outfile == NULL) {
+                        /* try creating directory */
+                        char *p = strrchr(fname, '/');
+                        if (p != NULL) {
+                          *p = '\0';
+                          makedir(fname);
+                          *p = '/';
+                          outfile = fopen(fname,"wb");
+                        }
+                      }
+                      if (outfile != NULL)
+                        printf("Extracting %s\n",fname);
+                      else
+                        fprintf(stderr, "%s: Couldn't create %s",prog,fname);
+                    }
+                  else
+                    outfile = NULL;
+                }
+              getheader = 0;
+              break;
+            default:
+              if (action == TGZ_LIST)
+                printf(" %s     <---> %s\n",strtime(&tartime),fname);
+              break;
+            }
+        }
      else
-	{
-	  unsigned int bytes = (remaining > BLOCKSIZE) ? BLOCKSIZE : remaining;
+        {
+          unsigned int bytes = (remaining > BLOCKSIZE) ? BLOCKSIZE : remaining;

-	  if ((action == TGZ_EXTRACT) && (outfile != NULL))
-	    {
-	      if (fwrite(&buffer,sizeof(char),bytes,outfile) != bytes)
-		{
-		  fprintf(stderr,"%s : error writing %s skipping...\n",prog,fname);
-		  fclose(outfile);
-		  unlink(fname);
-		}
-	    }
-	  remaining -= bytes;
-	  if (remaining == 0)
-	    {
-	      getheader = 1;
-	      if ((action == TGZ_EXTRACT) && (outfile != NULL))
-		{
-#ifdef WIN32
-		  HANDLE hFile;
-		  FILETIME ftm,ftLocal;
-		  SYSTEMTIME st;
-		  struct tm localt;
+          if (outfile != NULL)
+            {
+              if (fwrite(&buffer,sizeof(char),bytes,outfile) != bytes)
+                {
+                  fprintf(stderr,"%s: Error writing %s -- skipping\n",prog,fname);
+                  fclose(outfile);
+                  outfile = NULL;
+                  remove(fname);
+                }
+            }
+          remaining -= bytes;
+        }

-		  fclose(outfile);
+      if (remaining == 0)
+        {
+          getheader = 1;
+          if (outfile != NULL)
+            {
+              fclose(outfile);
+              outfile = NULL;
+              if (action != TGZ_INVALID)
+                setfiletime(fname,tartime);
+            }
+        }

-		  localt = *localtime(&tartime);
-
-		  hFile = CreateFile(fname, GENERIC_READ | GENERIC_WRITE,
-				     0, NULL, OPEN_EXISTING, 0, NULL);
-		  
-		  st.wYear = (WORD)localt.tm_year+1900;
-		  st.wMonth = (WORD)localt.tm_mon;
-		  st.wDayOfWeek = (WORD)localt.tm_wday;
-		  st.wDay = (WORD)localt.tm_mday;
-		  st.wHour = (WORD)localt.tm_hour;
-		  st.wMinute = (WORD)localt.tm_min;
-		  st.wSecond = (WORD)localt.tm_sec;
-		  st.wMilliseconds = 0;
-		  SystemTimeToFileTime(&st,&ftLocal);
-		  LocalFileTimeToFileTime(&ftLocal,&ftm);
-		  SetFileTime(hFile,&ftm,NULL,&ftm);
-		  CloseHandle(hFile);
-
-		  outfile = NULL;
-#else
-		  struct utimbuf settime;
-
-		  settime.actime = settime.modtime = tartime;
-
-		  fclose(outfile);
-		  outfile = NULL;
-		  utime(fname,&settime);
-#endif
-		}
-	    }
-	}
+      /*
+       * Abandon if errors are found
+       */
+      if (action == TGZ_INVALID)
+        {
+          error("broken archive");
+          break;
+        }
    }

  if (gzclose(in) != Z_OK)
@@ -423,53 +471,54 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
 }


-/* =========================================================== */
+/* ============================================================ */

 void help(int exitval)
 {
-  fprintf(stderr,
-	  "untgz v 0.1\n"
-	  " an sample application of zlib 1.0.4\n\n"
-          "Usage : untgz TGZfile            to extract all files\n"
-          "        untgz TGZfile fname ...  to extract selected files\n"
-          "        untgz -l TGZfile         to list archive contents\n"
-          "        untgz -h                 to display this help\n\n");
+  printf("untgz version 0.2\n"
+         "  using zlib version %s\n\n",
+         zlibVersion());
+  printf("Usage: untgz file.tgz            extract all files\n"
+         "       untgz file.tgz fname ...  extract selected files\n"
+         "       untgz -l file.tgz         list archive contents\n"
+         "       untgz -h                  display this help\n");
  exit(exitval);
 }

 void error(const char *msg)
 {
-    fprintf(stderr, "%s: %s\n", prog, msg);
-    exit(1);
+  fprintf(stderr, "%s: %s\n", prog, msg);
+  exit(1);
 }


-/* ====================================================================== */
+/* ============================================================ */

-int _CRT_glob = 0;	/* disable globbing of the arguments */
+#if defined(WIN32) && defined(__GNUC__)
+int _CRT_glob = 0;      /* disable argument globbing in MinGW */
+#endif

 int main(int argc,char **argv)
 {
-    int 	action = TGZ_EXTRACT;
-    int 	arg = 1;
-    char	*TGZfile;
-    gzFile	*f;
-    
+    int         action = TGZ_EXTRACT;
+    int         arg = 1;
+    char        *TGZfile;
+    gzFile      *f;

    prog = strrchr(argv[0],'\\');
    if (prog == NULL)
      {
-	prog = strrchr(argv[0],'/');
-	if (prog == NULL)
-	  {
-	    prog = strrchr(argv[0],':');
-	    if (prog == NULL)
-	      prog = argv[0];
-	    else
-	      prog++;
-	  }
-	else
-	  prog++;
+        prog = strrchr(argv[0],'/');
+        if (prog == NULL)
+          {
+            prog = strrchr(argv[0],':');
+            if (prog == NULL)
+              prog = argv[0];
+            else
+              prog++;
+          }
+        else
+          prog++;
      }
    else
      prog++;
@@ -479,13 +528,13 @@ int main(int argc,char **argv)

    if (strcmp(argv[arg],"-l") == 0)
      {
-	action = TGZ_LIST;
-	if (argc == ++arg)
-	  help(0);
+        action = TGZ_LIST;
+        if (argc == ++arg)
+          help(0);
      }
    else if (strcmp(argv[arg],"-h") == 0)
      {
-	help(0);
+        help(0);
      }

    if ((TGZfile = TGZfname(argv[arg])) == NULL)
@@ -502,20 +551,18 @@ int main(int argc,char **argv)
      {
      case TGZ_LIST:
      case TGZ_EXTRACT:
-	f = gzopen(TGZfile,"rb");
-	if (f == NULL)
-	  {
-	    fprintf(stderr,"%s: Couldn't gzopen %s\n",
-		    prog,
-		    TGZfile);
-	    return 1;
-	  }
-	exit(tar(f, action, arg, argc, argv));
+        f = gzopen(TGZfile,"rb");
+        if (f == NULL)
+          {
+            fprintf(stderr,"%s: Couldn't gzopen %s\n",prog,TGZfile);
+            return 1;
+          }
+        exit(tar(f, action, arg, argc, argv));
      break;

      default:
-	error("Unknown option!");
-	exit(1);
+        error("Unknown option");
+        exit(1);
      }

    return 0;
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Mark Adler	f0e76a6634	zlib 1.2.1.1	2011-09-09 23:23:38 -07:00
Mark Adler	7a33a861d1	zlib 1.2.1	2011-09-09 23:23:27 -07:00
Mark Adler	a2506218cd	zlib 1.2.0.8	2011-09-09 23:23:14 -07:00
Mark Adler	b97ec631c6	zlib 1.2.0.7	2011-09-09 23:23:01 -07:00
Mark Adler	f81ba93d4a	zlib 1.2.0.6	2011-09-09 23:22:48 -07:00
Mark Adler	4b5a43a219	zlib 1.2.0.5	2011-09-09 23:22:37 -07:00
Mark Adler	086e982175	zlib 1.2.0.4	2011-09-09 23:22:30 -07:00
Mark Adler	85e7d7d9ba	zlib 1.2.0.3	2011-09-09 23:22:21 -07:00
Mark Adler	8e34b3a802	zlib 1.2.0.2	2011-09-09 23:22:10 -07:00
				`@@ -1 +0,0 @@`
				`c:\masm611\bin\ml /coff /Zi /c /Flgvmat32.lst gvmat32.asm`
				`@@ -0,0 +1 @@`
				`See infback9.h for what this is and how to use it.`