zlib 1.2.2

zlib 1.2.1.2
2011-09-09 23:24:02 -07:00 · 2011-09-09 23:23:45 -07:00
85 changed files with 4444 additions and 514 deletions
--- a/41
+++ b/41
@@ -1,11 +1,46 @@

                ChangeLog file for zlib

+Changes in 1.2.2 (3 October 2004)
+- Update zlib.h comments on gzip in-memory processing
+- Set adler to 1 in inflateReset() to support Java test suite [Walles]
+- Add contrib/dotzlib [Ravn]
+- Update win32/DLL_FAQ.txt [Truta]
+- Update contrib/minizip [Vollant]
+- Move contrib/visual-basic.txt to old/ [Truta]
+- Fix assembler builds in projects/visualc6/ [Truta]
+
+Changes in 1.2.1.2 (9 September 2004)
+- Update INDEX file
+- Fix trees.c to update strm->data_type (no one ever noticed!)
+- Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown]
+- Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE)
+- Add limited multitasking protection to DYNAMIC_CRC_TABLE
+- Add NO_vsnprintf for VMS in zutil.h [Mozilla]
+- Don't declare strerror() under VMS [Mozilla]
+- Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize
+- Update contrib/ada [Anisimkov]
+- Update contrib/minizip [Vollant]
+- Fix configure to not hardcode directories for Darwin [Peterson]
+- Fix gzio.c to not return error on empty files [Brown]
+- Fix indentation; update version in contrib/delphi/ZLib.pas and
+  contrib/pascal/zlibpas.pas [Truta]
+- Update mkasm.bat in contrib/masmx86 [Truta]
+- Update contrib/untgz [Truta]
+- Add projects/README.projects [Truta]
+- Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta]
+- Update win32/DLL_FAQ.txt [Truta]
+- Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta]
+- Remove an unnecessary assignment to curr in inftrees.c [Truta]
+- Add OS/2 to exe builds in configure [Poltorak]
+- Remove err dummy parameter in zlib.h [Kientzle]
+
 Changes in 1.2.1.1 (9 January 2004)
- Updated email address in README
+- Update 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.
+- Fix a big fat bug in inftrees.c that prevented decoding valid
+  dynamic blocks with only literals and no distance codes --
+  Thanks to "Hot Emu" for the bug report and sample file
 - Add a note to puff.c on no distance codes case.

 Changes in 1.2.1 (17 November 2003)
--- a/2
+++ b/2
@@ -117,7 +117,7 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
    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: 
+        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
--- a/3
+++ b/3
@@ -8,9 +8,12 @@ algorithm.txt   description of the (de)compression algorithm
 configure       configure script for Unix
 zconf.in.h      template for zconf.h (used by configure)

+amiga/          makefiles for Amiga SAS C
+as400/          makefiles for IBM AS/400
 msdos/          makefiles for MSDOS
 old/            makefiles for various architectures and zlib documentation
                files that have not yet been updated for zlib 1.2.x
+projects/       projects for various Integrated Development Environments
 qnx/            makefiles for QNX
 win32/          makefiles for Windows

--- a/2
+++ b/2
@@ -30,7 +30,7 @@ CPP=$(CC) -E

 LIBS=libz.a
 SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.1.1
+SHAREDLIBV=libz.so.1.2.2
 SHAREDLIBM=libz.so.1

 AR=ar rc
--- a/Makefile.in
+++ b/Makefile.in
@@ -30,7 +30,7 @@ CPP=$(CC) -E

 LIBS=libz.a
 SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.1.1
+SHAREDLIBV=libz.so.1.2.2
 SHAREDLIBM=libz.so.1

 AR=ar rc
--- a/6
+++ b/6
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY

-zlib 1.2.1.1 is a general purpose data compression library.  All the code is
+zlib 1.2.2 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)
@@ -34,7 +34,7 @@ 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 1.2.1.1 are documented in the file ChangeLog.
+The changes made in version 1.2.2 are documented in the file ChangeLog.

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

@@ -93,7 +93,7 @@ Acknowledgments:

 Copyright notice:

- (C) 1995-2003 Jean-loup Gailly and Mark Adler
+ (C) 1995-2004 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
--- a/as400/compile.clp
+++ b/as400/compile.clp
@@ -118,6 +118,6 @@
                                 &MODLIB/INFTREES    &MODLIB/TREES       +
                                 &MODLIB/UNCOMPR     &MODLIB/ZUTIL)      +
                          SRCFILE(&SRCLIB/&CTLFILE) SRCMBR(BNDSRC) +
-                          TEXT('ZLIB 1.2.1') TGTRLS(V4R4M0)
+                          TEXT('ZLIB 1.2.2') TGTRLS(V4R4M0)

             ENDPGM
--- a/as400/readme.txt
+++ b/as400/readme.txt
@@ -1,4 +1,4 @@
-        ZLIB version 1.2.1 for AS400 installation instructions
+        ZLIB version 1.2.2 for AS400 installation instructions

 I) From an AS400 *SAVF file:

--- a/as400/zlib.inc
+++ b/as400/zlib.inc
@@ -1,7 +1,7 @@
      *  ZLIB.INC - Interface to the general purpose compression library
      *
      *  ILE RPG400 version by Patrick Monnerat, DATASPHERE.
-      *  Version 1.2.1.1
+      *  Version 1.2.2
      *
      *
      *  WARNING:
@@ -20,8 +20,8 @@
      *                               Constants
      **************************************************************************
      *
-     D ZLIB_VERSION    C                   '1.2.1.1'                            Header's version
-     D ZLIB_VERNUM     C                   X'1211'
+     D ZLIB_VERSION    C                   '1.2.2'                            Header's version
+     D ZLIB_VERNUM     C                   X'1220'
      *
     D Z_NO_FLUSH      C                   0
     D Z_SYNC_FLUSH    C                   2
--- a/6
+++ b/6
@@ -77,7 +77,7 @@ if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
  CFLAGS="$cflags"
  case `(uname -s || echo unknown) 2>/dev/null` in
  Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;
-  CYGWIN* | Cygwin* | cygwin* )
+  CYGWIN* | Cygwin* | cygwin* | OS/2* )
             EXE='.exe';;
  QNX*)  # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
         # (alain.bonnefoy@icbt.com)
@@ -89,9 +89,7 @@ if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
             SHAREDLIB=libz$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 -dynamiclib -install_name $libdir/$SHAREDLIBV -compatibility_version $VER2 -current_version $VER"};;
  *)             LDSHARED=${LDSHARED-"$cc -shared"};;
  esac
 else
--- a/contrib/README.contrib
+++ b/contrib/README.contrib
@@ -19,6 +19,9 @@ blast/      by Mark Adler <madler@alumni.caltech.edu>
 delphi/     by Cosmin Truta <cosmint@cs.ubbcluj.ro>
        Support for Delphi and C++ Builder

+dotzlib/    by Henrik Ravn <henrik@ravn.com>
+        Support for Microsoft .Net and Visual C++ .Net
+
 gzappend/   by Mark Adler <madler@alumni.caltech.edu>
        append to a gzip file -- illustrates the use of Z_BLOCK

@@ -60,11 +63,8 @@ puff/       by Mark Adler <madler@alumni.caltech.edu>
 testzlib/   by Gilles Vollant <info@winimage.com>
        Example of the use of zlib

-untgz/      by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
+untgz/      by Pedro A. Aranda Gutierrez <paag@tid.es>
        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
-
 vstudio/    by Gilles Vollant <info@winimage.com>
-        Building zlib with Visual Studio .NET
+        Building a minizip-enhanced zlib with Microsoft Visual Studio
--- a/contrib/ada/buffer_demo.adb
+++ b/contrib/ada/buffer_demo.adb
@@ -0,0 +1,106 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2004 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+--
+--  $Id: buffer_demo.adb,v 1.3 2004/09/06 06:55:35 vagul Exp $
+
+--  This demo program provided by Dr Steve Sangwine <sjs@essex.ac.uk>
+--
+--  Demonstration of a problem with Zlib-Ada (already fixed) when a buffer
+--  of exactly the correct size is used for decompressed data, and the last
+--  few bytes passed in to Zlib are checksum bytes.
+
+--  This program compresses a string of text, and then decompresses the
+--  compressed text into a buffer of the same size as the original text.
+
+with Ada.Streams; use Ada.Streams;
+with Ada.Text_IO;
+
+with ZLib; use ZLib;
+
+procedure Buffer_Demo is
+   EOL  : Character renames ASCII.LF;
+   Text : constant String
+     := "Four score and seven years ago our fathers brought forth," & EOL &
+        "upon this continent, a new nation, conceived in liberty," & EOL &
+        "and dedicated to the proposition that `all men are created equal'.";
+
+   Source : Stream_Element_Array (1 .. Text'Length);
+   for Source'Address use Text'Address;
+
+begin
+   Ada.Text_IO.Put (Text);
+   Ada.Text_IO.New_Line;
+   Ada.Text_IO.Put_Line
+     ("Uncompressed size : " & Positive'Image (Text'Length) & " bytes");
+
+   declare
+      Compressed_Data : Stream_Element_Array (1 .. Text'Length);
+      L               : Stream_Element_Offset;
+   begin
+      Compress : declare
+         Compressor : Filter_Type;
+         I : Stream_Element_Offset;
+      begin
+         Deflate_Init (Compressor);
+
+         --  Compress the whole of T at once.
+
+         Translate (Compressor, Source, I, Compressed_Data, L, Finish);
+         pragma Assert (I = Source'Last);
+
+         Close (Compressor);
+
+         Ada.Text_IO.Put_Line
+           ("Compressed size :   "
+            & Stream_Element_Offset'Image (L) & " bytes");
+      end Compress;
+
+      --  Now we decompress the data, passing short blocks of data to Zlib
+      --  (because this demonstrates the problem - the last block passed will
+      --  contain checksum information and there will be no output, only a
+      --  check inside Zlib that the checksum is correct).
+
+      Decompress : declare
+         Decompressor : Filter_Type;
+
+         Uncompressed_Data : Stream_Element_Array (1 .. Text'Length);
+
+         Block_Size : constant := 4;
+         --  This makes sure that the last block contains
+         --  only Adler checksum data.
+
+         P : Stream_Element_Offset := Compressed_Data'First - 1;
+         O : Stream_Element_Offset;
+      begin
+         Inflate_Init (Decompressor);
+
+         loop
+            Translate
+              (Decompressor,
+               Compressed_Data
+                 (P + 1 .. Stream_Element_Offset'Min (P + Block_Size, L)),
+               P,
+               Uncompressed_Data
+                 (Total_Out (Decompressor) + 1 .. Uncompressed_Data'Last),
+               O,
+               No_Flush);
+
+               Ada.Text_IO.Put_Line
+                 ("Total in : " & Count'Image (Total_In (Decompressor)) &
+                  ", out : " & Count'Image (Total_Out (Decompressor)));
+
+               exit when P = L;
+         end loop;
+
+         Ada.Text_IO.New_Line;
+         Ada.Text_IO.Put_Line
+           ("Decompressed text matches original text : "
+             & Boolean'Image (Uncompressed_Data = Source));
+      end Decompress;
+   end;
+end Buffer_Demo;
--- a/contrib/ada/mtest.adb
+++ b/contrib/ada/mtest.adb
@@ -5,10 +5,10 @@
 --                                                            --
 --  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.
+--  Continuous test for ZLib multithreading. If the test would fail
+--  we should provide thread safe allocation routines for the Z_Stream.
 --
--  $Id: mtest.adb,v 1.2 2003/08/12 12:11:05 vagul Exp $
+--  $Id: mtest.adb,v 1.4 2004/07/23 07:49:54 vagul Exp $

 with ZLib;
 with Ada.Streams;
@@ -148,6 +148,9 @@ procedure MTest is

   pragma Unreferenced (Test);

+   Dummy : Character;
+
 begin
-   null;
+   Ada.Text_IO.Get_Immediate (Dummy);
+   Stop := True;
 end MTest;
--- a/contrib/ada/read.adb
+++ b/contrib/ada/read.adb
@@ -6,7 +6,7 @@
 --  Open source license information is in the zlib.ads file.  --
 ----------------------------------------------------------------

--  $Id: read.adb,v 1.7 2003/08/12 12:12:35 vagul Exp $
+--  $Id: read.adb,v 1.8 2004/05/31 10:53:40 vagul Exp $

 --  Test/demo program for the generic read interface.

@@ -68,7 +68,11 @@ procedure Read is
   --  ZLib.Read
   --  reading data from the File_In.

-   procedure Read is new ZLib.Read (Read, Read_Buffer, Read_First, Read_Last);
+   procedure Read is new ZLib.Read
+                           (Read,
+                            Read_Buffer,
+                            Rest_First => Read_First,
+                            Rest_Last  => Read_Last);

   ----------
   -- Read --
@@ -103,6 +107,7 @@ procedure Read is
      Pack_Size := 0;
      Offset := 1;
      Read_First := Read_Buffer'Last + 1;
+      Read_Last  := Read_Buffer'Last;
   end Reset;

 begin
--- a/contrib/ada/readme.txt
+++ b/contrib/ada/readme.txt
@@ -1,23 +1,34 @@
-
-			ZLib for Ada thick binding (ZLib.Ada)
-			Release 1.2
+                        ZLib for Ada thick binding (ZLib.Ada)
+                        Release 1.3

 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:
+        Here are the main changes since ZLib.Ada 1.2:

- The default header type has a name "Default" now. Auto is used only for
-  automatic GZip/ZLib header detection.
+- Attension: ZLib.Read generic routine have a initialization requirement
+  for Read_Last parameter now. It is a bit incompartible with previous version,
+  but extends functionality, we could use new parameters Allow_Read_Some and
+  Flush now.

- Added test for multitasking mtest.adb.
+- Added Is_Open routines to ZLib and ZLib.Streams packages.

- Added GNAT project file zlib.gpr.
+- Add pragma Assert to check Stream_Element is 8 bit.
+
+- Fix extraction to buffer with exact known decompressed size. Error reported by
+  Steve Sangwine.
+
+- Fix definition of ULong (changed to unsigned_long), fix regression on 64 bits
+  computers. Patch provided by Pascal Obry.
+
+- Add Status_Error exception definition.
+
+- Add pragma Assertion that Ada.Streams.Stream_Element size is 8 bit.


-	How to build ZLib.Ada under GNAT
+        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
@@ -30,7 +41,7 @@ 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
+        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.
@@ -40,7 +51,7 @@ Or use the GNAT project file build for GNAT 3.15 or later:
 6. Build the executable using test.adb as a main procedure.


-	How to use ZLib.Ada
+        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.
@@ -50,3 +61,5 @@ The routines from the package specifications are commented.

 Homepage: http://zlib-ada.sourceforge.net/
 Author: Dmitriy Anisimkov <anisimkov@yahoo.com>
+
+Contributors: Pascal Obry <pascal@obry.org>, Steve Sangwine <sjs@essex.ac.uk>
--- a/contrib/ada/zlib-streams.adb
+++ b/contrib/ada/zlib-streams.adb
@@ -6,7 +6,7 @@
 --  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 $
+--  $Id: zlib-streams.adb,v 1.10 2004/05/31 10:53:40 vagul Exp $

 with Ada.Unchecked_Deallocation;

@@ -90,6 +90,7 @@ package body ZLib.Streams is

         Stream.Buffer     := new Buffer_Subtype;
         Stream.Rest_First := Stream.Buffer'Last + 1;
+         Stream.Rest_Last  := Stream.Buffer'Last;
      end if;
   end Create;

@@ -113,6 +114,15 @@ package body ZLib.Streams is
      end loop;
   end Flush;

+   -------------
+   -- Is_Open --
+   -------------
+
+   function Is_Open (Stream : Stream_Type) return Boolean is
+   begin
+      return Is_Open (Stream.Reader) or else Is_Open (Stream.Writer);
+   end Is_Open;
+
   ----------
   -- Read --
   ----------
--- a/contrib/ada/zlib-streams.ads
+++ b/contrib/ada/zlib-streams.ads
@@ -6,7 +6,7 @@
 --  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 $
+--  $Id: zlib-streams.ads,v 1.12 2004/05/31 10:53:40 vagul Exp $

 package ZLib.Streams is

@@ -77,6 +77,8 @@ package ZLib.Streams is
   --  !!! When the Need_Header is False ZLib-Ada is using undocumented
   --  ZLib 1.1.4 functionality to do not create/wait for ZLib headers.

+   function Is_Open (Stream : Stream_Type) return Boolean;
+
   procedure Close (Stream : in out Stream_Type);

 private
--- a/contrib/ada/zlib-thin.adb
+++ b/contrib/ada/zlib-thin.adb
@@ -6,12 +6,11 @@
 --  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 $
+--  $Id: zlib-thin.adb,v 1.8 2003/12/14 18:27:31 vagul Exp $

 package body ZLib.Thin is

-   ZLIB_VERSION : constant Chars_Ptr :=
-      Interfaces.C.Strings.New_String ("1.1.4");
+   ZLIB_VERSION  : constant Chars_Ptr := zlibVersion;

   Z_Stream_Size : constant Int := Z_Stream'Size / System.Storage_Unit;

@@ -37,14 +36,6 @@ package body ZLib.Thin is
   -- 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;
@@ -69,16 +60,15 @@ package body ZLib.Thin is
   -- 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;

+   ------------------------
+   -- Last_Error_Message --
+   ------------------------
+
   function Last_Error_Message (Strm : in Z_Stream) return String is
      use Interfaces.C.Strings;
   begin
@@ -89,54 +79,28 @@ package body ZLib.Thin is
      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
+      Buffer : in     Voidp;
+      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
+      Opaque : in     Voidp;
+      Alloc  : in     alloc_func;
+      Free   : in     free_func) is
   begin
      Strm.opaque := Opaque;
      Strm.zalloc := Alloc;
@@ -149,21 +113,13 @@ package body ZLib.Thin is

   procedure Set_Out
     (Strm   : in out Z_Stream;
-      Buffer : in Byte_Access;
-      Size   : in UInt) is
+      Buffer : in     Voidp;
+      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 --
   --------------
--- a/contrib/ada/zlib-thin.ads
+++ b/contrib/ada/zlib-thin.ads
@@ -6,10 +6,11 @@
 --  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 $
+--  $Id: zlib-thin.ads,v 1.11 2004/07/23 06:33:11 vagul Exp $

 with Interfaces.C.Strings;
-with System.Address_To_Access_Conversions;
+
+with System;

 private package ZLib.Thin is

@@ -36,18 +37,18 @@ private package ZLib.Thin is
                                                --  zconf.h:216
   type Int is new Interfaces.C.int;

-   type ULong is new Interfaces.C.unsigned;     --  32 bits or more
-                                                --  zconf.h:217
+   type ULong is new Interfaces.C.unsigned_long;     --  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;
+   subtype Byte_Access is Voidp;

+   Nul : constant Voidp := System.Null_Address;
   --  end from zconf

   Z_NO_FLUSH : constant := 8#0000#;   --  zlib.h:125
@@ -251,12 +252,6 @@ private package ZLib.Thin is
      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;
@@ -284,9 +279,6 @@ private package ZLib.Thin is
      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;
@@ -318,32 +310,12 @@ private package ZLib.Thin is
   --  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;
@@ -388,19 +360,13 @@ private package ZLib.Thin is

   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
+      Next_In   : Voidp      := Nul;  -- 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
+      Next_Out  : Voidp      := Nul;  -- 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
@@ -460,14 +426,13 @@ private
   pragma Import (C, inflateSyncPoint, "inflateSyncPoint");
   pragma Import (C, get_crc_table, "get_crc_table");

-   --  added in zlib 1.2.1:
+   --  since zlib 1.2.0:

   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_");

--- a/contrib/ada/zlib.adb
+++ b/contrib/ada/zlib.adb
@@ -1,12 +1,12 @@
 ----------------------------------------------------------------
 --  ZLib for Ada thick binding.                               --
 --                                                            --
--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--  Copyright (C) 2002-2004 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 $
+--  $Id: zlib.adb,v 1.31 2004/09/06 06:53:19 vagul Exp $

 with Ada.Exceptions;
 with Ada.Unchecked_Conversion;
@@ -34,7 +34,7 @@ package body ZLib is
       VERSION_ERROR);

   type Flate_Step_Function is access
-     function (Strm : Thin.Z_Streamp; flush : Thin.Int) return Thin.Int;
+     function (Strm : in Thin.Z_Streamp; Flush : in Thin.Int) return Thin.Int;
   pragma Convention (C, Flate_Step_Function);

   type Flate_End_Function is access
@@ -82,13 +82,13 @@ package body ZLib is
   Flush_Finish : constant array (Boolean) of Flush_Mode
     := (True => Finish, False => No_Flush);

-   procedure Raise_Error (Stream : Z_Stream);
+   procedure Raise_Error (Stream : in Z_Stream);
   pragma Inline (Raise_Error);

-   procedure Raise_Error (Message : String);
+   procedure Raise_Error (Message : in String);
   pragma Inline (Raise_Error);

-   procedure Check_Error (Stream : Z_Stream; Code : Thin.Int);
+   procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int);

   procedure Free is new Ada.Unchecked_Deallocation
      (Z_Stream, Z_Stream_Access);
@@ -118,7 +118,7 @@ package body ZLib is
   -- Check_Error --
   -----------------

-   procedure Check_Error (Stream : Z_Stream; Code : Thin.Int) is
+   procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int) is
      use type Thin.Int;
   begin
      if Code /= Thin.Z_OK then
@@ -138,10 +138,11 @@ package body ZLib is
   is
      Code : Thin.Int;
   begin
-      Code := Flate (Filter.Compression).Done
-          (To_Thin_Access (Filter.Strm));
+      if not Ignore_Error and then not Is_Open (Filter) then
+         raise Status_Error;
+      end if;

-      Filter.Opened := False;
+      Code := Flate (Filter.Compression).Done (To_Thin_Access (Filter.Strm));

      if Ignore_Error or else Code = Thin.Z_OK then
         Free (Filter.Strm);
@@ -154,7 +155,7 @@ package body ZLib is
            Ada.Exceptions.Raise_Exception
               (ZLib_Error'Identity,
                Return_Code_Enum'Image (Return_Code (Code))
-                & ": " & Error_Message);
+                  & ": " & Error_Message);
         end;
      end if;
   end Close;
@@ -170,10 +171,9 @@ package body ZLib is
   is
      use Thin;
   begin
-      return Unsigned_32 (crc32
-        (ULong (CRC),
-         Bytes.To_Pointer (Data'Address),
-         Data'Length));
+      return Unsigned_32 (crc32 (ULong (CRC),
+                                 Data'Address,
+                                 Data'Length));
   end CRC32;

   procedure CRC32
@@ -192,13 +192,17 @@ package body ZLib is
      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;
+      Window_Bits  : in     Window_Bits_Type   := Default_Window_Bits;
+      Memory_Level : in     Memory_Level_Type  := Default_Memory_Level;
      Header       : in     Header_Type        := Default)
   is
      use type Thin.Int;
      Win_Bits : Thin.Int := Thin.Int (Window_Bits);
   begin
+      if Is_Open (Filter) then
+         raise Status_Error;
+      end if;
+
      --  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.
@@ -216,10 +220,9 @@ package body ZLib is
         Filter.Offset := Simple_GZip_Header'Last + 1;
      end if;

-      Filter.Strm := new Z_Stream;
+      Filter.Strm        := new Z_Stream;
      Filter.Compression := True;
      Filter.Stream_End  := False;
-      Filter.Opened      := True;
      Filter.Header      := Header;

      if Thin.Deflate_Init
@@ -255,18 +258,18 @@ package body ZLib is
   -----------------------

   procedure Generic_Translate
-     (Filter : in out ZLib.Filter_Type;
-      In_Buffer_Size  : Integer := Default_Buffer_Size;
-      Out_Buffer_Size : Integer := Default_Buffer_Size)
+     (Filter          : in out ZLib.Filter_Type;
+      In_Buffer_Size  : in     Integer := Default_Buffer_Size;
+      Out_Buffer_Size : in     Integer := Default_Buffer_Size)
   is
-      In_Buffer : Stream_Element_Array
-         (1 .. Stream_Element_Offset (In_Buffer_Size));
+      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;
+                     (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);
@@ -275,18 +278,21 @@ package body ZLib is

         loop
            Translate
-              (Filter,
-               In_Buffer (In_First .. Last),
-               In_Last,
-               Out_Buffer,
-               Out_Last,
-               Flush_Finish (Last < In_Buffer'First));
+              (Filter   => Filter,
+               In_Data  => In_Buffer (In_First .. Last),
+               In_Last  => In_Last,
+               Out_Data => Out_Buffer,
+               Out_Last => Out_Last,
+               Flush    => Flush_Finish (Last < In_Buffer'First));

-            Data_Out (Out_Buffer (Out_Buffer'First .. Out_Last));
+            if Out_Buffer'First <= Out_Last then
+               Data_Out (Out_Buffer (Out_Buffer'First .. Out_Last));
+            end if;

            exit Main when Stream_End (Filter);

            --  The end of in buffer.
+
            exit when In_Last = Last;

            In_First := In_Last + 1;
@@ -301,7 +307,7 @@ package body ZLib is

   procedure Inflate_Init
     (Filter      : in out Filter_Type;
-      Window_Bits : in     Window_Bits_Type := 15;
+      Window_Bits : in     Window_Bits_Type := Default_Window_Bits;
      Header      : in     Header_Type      := Default)
   is
      use type Thin.Int;
@@ -320,6 +326,10 @@ package body ZLib is
      end Check_Version;

   begin
+      if Is_Open (Filter) then
+         raise Status_Error;
+      end if;
+
      case Header is
         when None =>
            Check_Version;
@@ -344,10 +354,9 @@ package body ZLib is
         when Default => null;
      end case;

-      Filter.Strm := new Z_Stream;
+      Filter.Strm        := new Z_Stream;
      Filter.Compression := False;
      Filter.Stream_End  := False;
-      Filter.Opened      := True;
      Filter.Header      := Header;

      if Thin.Inflate_Init
@@ -357,16 +366,25 @@ package body ZLib is
      end if;
   end Inflate_Init;

+   -------------
+   -- Is_Open --
+   -------------
+
+   function Is_Open (Filter : in Filter_Type) return Boolean is
+   begin
+      return Filter.Strm /= null;
+   end Is_Open;
+
   -----------------
   -- Raise_Error --
   -----------------

-   procedure Raise_Error (Message : String) is
+   procedure Raise_Error (Message : in String) is
   begin
      Ada.Exceptions.Raise_Exception (ZLib_Error'Identity, Message);
   end Raise_Error;

-   procedure Raise_Error (Stream : Z_Stream) is
+   procedure Raise_Error (Stream : in Z_Stream) is
   begin
      Raise_Error (Last_Error_Message (Stream));
   end Raise_Error;
@@ -378,21 +396,29 @@ package body ZLib is
   procedure Read
     (Filter : in out Filter_Type;
      Item   :    out Ada.Streams.Stream_Element_Array;
-      Last   :    out Ada.Streams.Stream_Element_Offset)
+      Last   :    out Ada.Streams.Stream_Element_Offset;
+      Flush  : in     Flush_Mode := No_Flush)
   is
      In_Last    : Stream_Element_Offset;
      Item_First : Ada.Streams.Stream_Element_Offset := Item'First;
+      V_Flush    : Flush_Mode := Flush;

   begin
      pragma Assert (Rest_First in Buffer'First .. Buffer'Last + 1);
+      pragma Assert (Rest_Last in Buffer'First - 1 .. Buffer'Last);

      loop
-         if Rest_First > Buffer'Last then
+         if Rest_Last = Buffer'First - 1 then
+            V_Flush := Finish;
+
+         elsif Rest_First > Rest_Last then
            Read (Buffer, Rest_Last);
            Rest_First := Buffer'First;
-         end if;

-         pragma Assert (Rest_Last in Buffer'First - 1 .. Buffer'Last);
+            if Rest_Last < Buffer'First then
+               V_Flush := Finish;
+            end if;
+         end if;

         Translate
           (Filter   => Filter,
@@ -400,11 +426,13 @@ package body ZLib is
            In_Last  => In_Last,
            Out_Data => Item (Item_First .. Item'Last),
            Out_Last => Last,
-            Flush    => Flush_Finish (Rest_Last < Rest_First));
+            Flush    => V_Flush);

         Rest_First := In_Last + 1;

-         exit when Last = Item'Last or else Stream_End (Filter);
+         exit when Stream_End (Filter)
+           or else Last = Item'Last
+           or else (Last >= Item'First and then Allow_Read_Some);

         Item_First := Last + 1;
      end loop;
@@ -489,11 +517,11 @@ package body ZLib is
      Code : Thin.Int;

   begin
-      if Filter.Opened = False then
-         raise ZLib_Error;
+      if not Is_Open (Filter) then
+         raise Status_Error;
      end if;

-      if Out_Data'Length = 0 then
+      if Out_Data'Length = 0 and then In_Data'Length = 0 then
         raise Constraint_Error;
      end if;

@@ -514,7 +542,6 @@ package body ZLib is
         - Stream_Element_Offset (Avail_In (Filter.Strm.all));
      Out_Last := Out_Data'Last
         - Stream_Element_Offset (Avail_Out (Filter.Strm.all));
-
   end Translate_Auto;

   --------------------
@@ -529,7 +556,7 @@ package body ZLib is
      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
      Flush     : in     Flush_Mode)
   is
-      Out_First  : Stream_Element_Offset;
+      Out_First : Stream_Element_Offset;

      procedure Add_Data (Data : in Stream_Element_Array);
      --  Add data to stream from the Filter.Offset till necessary,
@@ -596,7 +623,7 @@ package body ZLib is
         Add_Data (Simple_GZip_Header);

         Translate_Auto
-           (Filter => Filter,
+           (Filter   => Filter,
            In_Data  => In_Data,
            In_Last  => In_Last,
            Out_Data => Out_Data (Out_First .. Out_Data'Last),
@@ -604,7 +631,6 @@ package body ZLib is
            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
@@ -642,10 +668,11 @@ package body ZLib is
   procedure Write
     (Filter : in out Filter_Type;
      Item   : in     Ada.Streams.Stream_Element_Array;
-      Flush  : in     Flush_Mode)
+      Flush  : in     Flush_Mode := No_Flush)
   is
-      Buffer : Stream_Element_Array (1 .. Buffer_Size);
-      In_Last, Out_Last : Stream_Element_Offset;
+      Buffer   : Stream_Element_Array (1 .. Buffer_Size);
+      In_Last  : Stream_Element_Offset;
+      Out_Last : Stream_Element_Offset;
      In_First : Stream_Element_Offset := Item'First;
   begin
      if Item'Length = 0 and Flush = No_Flush then
@@ -654,7 +681,7 @@ package body ZLib is

      loop
         Translate
-           (Filter => Filter,
+           (Filter   => Filter,
            In_Data  => Item (In_First .. Item'Last),
            In_Last  => In_Last,
            Out_Data => Buffer,
--- a/contrib/ada/zlib.ads
+++ b/contrib/ada/zlib.ads
@@ -1,7 +1,7 @@
 ------------------------------------------------------------------------------
 --                      ZLib for Ada thick binding.                         --
 --                                                                          --
--              Copyright (C) 2002-2003 Dmitriy Anisimkov                   --
+--              Copyright (C) 2002-2004 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    --
@@ -25,7 +25,7 @@
 --  covered by the  GNU Public License.                                     --
 ------------------------------------------------------------------------------

--  $Id: zlib.ads,v 1.17 2003/08/12 13:19:07 vagul Exp $
+--  $Id: zlib.ads,v 1.26 2004/09/06 06:53:19 vagul Exp $

 with Ada.Streams;

@@ -33,7 +33,8 @@ with Interfaces;

 package ZLib is

-   ZLib_Error : exception;
+   ZLib_Error   : exception;
+   Status_Error : exception;

   type Compression_Level is new Integer range -1 .. 9;

@@ -55,12 +56,15 @@ package ZLib is

   subtype Count is Ada.Streams.Stream_Element_Count;

+   Default_Memory_Level : constant Memory_Level_Type := 8;
+   Default_Window_Bits  : constant Window_Bits_Type  := 15;
+
   ----------------------------------
   -- Compression method constants --
   ----------------------------------

   Deflated : constant Compression_Method;
-   --  Only one method allowed in this ZLib version.
+   --  Only one method allowed in this ZLib version

   ---------------------------------
   -- Compression level constants --
@@ -79,21 +83,29 @@ package ZLib is
   --  Regular way for compression, no flush

   Partial_Flush : constant Flush_Mode;
-   --  will be removed, use Z_SYNC_FLUSH instead
+   --  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
+   --  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.

+   Block_Flush   : constant Flush_Mode;
+   --  Z_BLOCK requests that inflate() stop
+   --  if and when it get to the next deflate block boundary. When decoding the
+   --  zlib or gzip format, this will cause inflate() to return immediately
+   --  after the header and before the first block. When doing a raw inflate,
+   --  inflate() will go ahead and process the first block, and will return
+   --  when it gets to the end of that block, or when it runs out of data.
+
   Full_Flush    : constant Flush_Mode;
-   --  all output is flushed as with SYNC_FLUSH, and the compression state
+   --  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.
+   --  Full_Flush too often can seriously degrade the compression.

   Finish        : constant Flush_Mode;
   --  Just for tell the compressor that input data is complete.
@@ -111,7 +123,7 @@ package ZLib is

   Default_Buffer_Size : constant := 4096;

-   type Filter_Type is limited private;
+   type Filter_Type is tagged limited private;
   --  The filter is for compression and for decompression.
   --  The usage of the type is depend of its initialization.

@@ -124,8 +136,8 @@ package ZLib is
      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;
+      Window_Bits  : in     Window_Bits_Type   := Default_Window_Bits;
+      Memory_Level : in     Memory_Level_Type  := Default_Memory_Level;
      Header       : in     Header_Type        := Default);
   --  Compressor initialization.
   --  When Header parameter is Auto or Default, then default zlib header
@@ -136,7 +148,7 @@ package ZLib is

   procedure Inflate_Init
     (Filter      : in out Filter_Type;
-      Window_Bits : in     Window_Bits_Type := 15;
+      Window_Bits : in     Window_Bits_Type := Default_Window_Bits;
      Header      : in     Header_Type      := Default);
   --  Decompressor initialization.
   --  Default header type mean that ZLib default header is expecting in the
@@ -146,10 +158,14 @@ package ZLib is
   --  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.
+   --  Note that header types parameter values None, GZip and Auto are
+   --  supported for inflate routine only in ZLib versions 1.2.0.2 and later.
   --  Deflate_Init is supporting all header types.

+   function Is_Open (Filter : in Filter_Type) return Boolean;
+   pragma Inline (Is_Open);
+   --  Is the filter opened for compression or decompression.
+
   procedure Close
     (Filter       : in out Filter_Type;
      Ignore_Error : in     Boolean := False);
@@ -167,31 +183,31 @@ package ZLib is
     (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
+   --  Compress/decompress data fetch from Data_In routine and pass the result
   --  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.
+   --  Compression or decompression depend on Filter initialization.

   function Total_In (Filter : in Filter_Type) return Count;
   pragma Inline (Total_In);
-   --  Return total number of input bytes read so far.
+   --  Returns 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.
+   --  Returns 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.
+   --  Compute 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.
+   --  Compute CRC32, it could be necessary for make gzip format

   -------------------------------------------------
   --  Below is more complex low level routines.  --
@@ -204,15 +220,11 @@ package ZLib is
      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.
+   --  Compress/decompress the In_Data buffer and place the result into
+   --  Out_Data. In_Last is the index of last element from In_Data accepted by
+   --  the Filter. Out_Last is the last element of the received data from
+   --  Filter. To tell the filter that incoming data are complete put the
+   --  Flush parameter to Finish.

   function Stream_End (Filter : in Filter_Type) return Boolean;
   pragma Inline (Stream_End);
@@ -239,10 +251,9 @@ package ZLib is
   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.
+      Flush   : in     Flush_Mode := No_Flush);
+   --  Compress/Decompress data from Item to the generic parameter procedure
+   --  Write. Output buffer size could be set in Buffer_Size generic parameter.

   generic
      with procedure Read
@@ -257,33 +268,41 @@ package ZLib is

      Rest_First, Rest_Last : in out Ada.Streams.Stream_Element_Offset;
      --  Rest_First have to be initialized to Buffer'Last + 1
+      --  Rest_Last have to be initialized to Buffer'Last
      --  before usage.

+      Allow_Read_Some : in Boolean := False;
+      --  Is it allowed to return Last < Item'Last before end of data.
+
   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.
+      Last   :    out Ada.Streams.Stream_Element_Offset;
+      Flush  : in     Flush_Mode := No_Flush);
+   --  Compress/Decompress data from generic parameter procedure Read to the
+   --  Item. User should provide Buffer and initialized Rest_First, Rest_Last
+   --  indicators. If Allow_Read_Some is True, Read routines could return
+   --  Last < Item'Last only at end of stream.

 private

   use Ada.Streams;

-   type Flush_Mode is new Integer range 0 .. 4;
+   pragma Assert (Ada.Streams.Stream_Element'Size    =    8);
+   pragma Assert (Ada.Streams.Stream_Element'Modulus = 2**8);
+
+   type Flush_Mode is new Integer range 0 .. 5;

   type Compression_Method is new Integer range 8 .. 8;

   type Strategy_Type is new Integer range 0 .. 3;

   No_Flush      : constant Flush_Mode := 0;
+   Partial_Flush : constant Flush_Mode := 1;
   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
+   Block_Flush   : constant Flush_Mode := 5;

   Filtered         : constant Strategy_Type := 1;
   Huffman_Only     : constant Strategy_Type := 2;
@@ -296,7 +315,7 @@ private

   type Z_Stream_Access is access all Z_Stream;

-   type Filter_Type is record
+   type Filter_Type is tagged limited record
      Strm        : Z_Stream_Access;
      Compression : Boolean;
      Stream_End  : Boolean;
@@ -304,8 +323,6 @@ private
      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
@@ -3,10 +3,10 @@ project Zlib is
   for Languages use ("Ada");
   for Source_Dirs use (".");
   for Object_Dir use ".";
-   for Main use ("test.adb", "mtest.adb", "read.adb");
+   for Main use ("test.adb", "mtest.adb", "read.adb", "buffer_demo");

   package Compiler is
-      for Default_Switches ("ada") use ("-gnatwbcfilopru", "-gnatVcdfimorst", "-gnatyabcefhiklmnoprst");
+      for Default_Switches ("ada") use ("-gnatwcfilopru", "-gnatVcdfimorst", "-gnatyabcefhiklmnoprst");
   end Compiler;

   package Linker is
@@ -18,4 +18,3 @@ project Zlib is
   end Builder;

 end Zlib;
-
--- a/contrib/delphi/ZLib.pas
+++ b/contrib/delphi/ZLib.pas
@@ -152,7 +152,7 @@ procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
  const OutBuf: Pointer; BufSize: Integer);

 const
-  zlib_version = '1.2.1';
+  zlib_version = '1.2.2';

 type
  EZlibError = class(Exception);
@@ -510,7 +510,7 @@ begin
        Result := Count - FZRec.avail_out;
        Exit;
      end;
-          FZRec.next_in := FBuffer;
+      FZRec.next_in := FBuffer;
      FStrmPos := FStrm.Position;
      Progress(Self);
    end;
--- a/contrib/dotzlib/DotZLib.build
+++ b/contrib/dotzlib/DotZLib.build
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<project name="DotZLib" default="build" basedir="./DotZLib">
+	<description>A .Net wrapper library around ZLib1.dll</description>
+
+	<property name="nunit.location" value="c:/program files/NUnit V2.1/bin" />
+	<property name="build.root" value="bin" />
+	
+	<property name="debug" value="true" />
+	<property name="nunit" value="true" />
+
+	<property name="build.folder" value="${build.root}/debug/" if="${debug}" />
+	<property name="build.folder" value="${build.root}/release/" unless="${debug}" />
+
+	<target name="clean" description="Remove all generated files">
+		<delete dir="${build.root}" failonerror="false" />
+	</target>
+
+	<target name="build" description="compiles the source code">
+		
+		<mkdir dir="${build.folder}" />
+		<csc target="library" output="${build.folder}DotZLib.dll" debug="${debug}">
+			<references basedir="${nunit.location}">
+				<includes if="${nunit}" name="nunit.framework.dll" />
+			</references>
+			<sources>
+				<includes name="*.cs" />
+				<excludes name="UnitTests.cs" unless="${nunit}" />
+			</sources>
+			<arg value="/d:nunit" if="${nunit}" />
+		</csc>
+	</target>
+
+</project>
--- a/contrib/dotzlib/DotZLib.chm
+++ b/contrib/dotzlib/DotZLib.chm
--- a/contrib/dotzlib/DotZLib.sln
+++ b/contrib/dotzlib/DotZLib.sln
@@ -0,0 +1,21 @@
+Microsoft Visual Studio Solution File, Format Version 8.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotZLib", "DotZLib\DotZLib.csproj", "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
+	ProjectSection(ProjectDependencies) = postProject
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfiguration) = preSolution
+		Debug = Debug
+		Release = Release
+	EndGlobalSection
+	GlobalSection(ProjectConfiguration) = postSolution
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.ActiveCfg = Debug|.NET
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.Build.0 = Debug|.NET
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.ActiveCfg = Release|.NET
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.Build.0 = Release|.NET
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+	EndGlobalSection
+	GlobalSection(ExtensibilityAddIns) = postSolution
+	EndGlobalSection
+EndGlobal
--- a/contrib/dotzlib/DotZLib/AssemblyInfo.cs
+++ b/contrib/dotzlib/DotZLib/AssemblyInfo.cs
@@ -0,0 +1,58 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+//
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+//
+[assembly: AssemblyTitle("DotZLib")]
+[assembly: AssemblyDescription(".Net bindings for ZLib compression dll 1.2.x")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Henrik Ravn")]
+[assembly: AssemblyProduct("")]
+[assembly: AssemblyCopyright("(c) 2004 by Henrik Ravn")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]		
+
+//
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+
+[assembly: AssemblyVersion("1.0.*")]
+
+//
+// In order to sign your assembly you must specify a key to use. Refer to the 
+// Microsoft .NET Framework documentation for more information on assembly signing.
+//
+// Use the attributes below to control which key is used for signing. 
+//
+// Notes: 
+//   (*) If no key is specified, the assembly is not signed.
+//   (*) KeyName refers to a key that has been installed in the Crypto Service
+//       Provider (CSP) on your machine. KeyFile refers to a file which contains
+//       a key.
+//   (*) If the KeyFile and the KeyName values are both specified, the 
+//       following processing occurs:
+//       (1) If the KeyName can be found in the CSP, that key is used.
+//       (2) If the KeyName does not exist and the KeyFile does exist, the key 
+//           in the KeyFile is installed into the CSP and used.
+//   (*) In order to create a KeyFile, you can use the sn.exe (Strong Name) utility.
+//       When specifying the KeyFile, the location of the KeyFile should be
+//       relative to the project output directory which is
+//       %Project Directory%\obj\<configuration>. For example, if your KeyFile is
+//       located in the project directory, you would specify the AssemblyKeyFile 
+//       attribute as [assembly: AssemblyKeyFile("..\\..\\mykey.snk")]
+//   (*) Delay Signing is an advanced option - see the Microsoft .NET Framework
+//       documentation for more information on this.
+//
+[assembly: AssemblyDelaySign(false)]
+[assembly: AssemblyKeyFile("")]
+[assembly: AssemblyKeyName("")]
--- a/contrib/dotzlib/DotZLib/ChecksumImpl.cs
+++ b/contrib/dotzlib/DotZLib/ChecksumImpl.cs
@@ -0,0 +1,202 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+
+namespace DotZLib
+{
+    #region ChecksumGeneratorBase
+    /// <summary>
+    /// Implements the common functionality needed for all <see cref="ChecksumGenerator"/>s
+    /// </summary>
+    /// <example></example>
+    public abstract class ChecksumGeneratorBase : ChecksumGenerator
+    {
+        /// <summary>
+        /// The value of the current checksum
+        /// </summary>
+        protected uint _current;
+
+        /// <summary>
+        /// Initializes a new instance of the checksum generator base - the current checksum is 
+        /// set to zero
+        /// </summary>
+        public ChecksumGeneratorBase()
+        {
+            _current = 0;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the checksum generator basewith a specified value
+        /// </summary>
+        /// <param name="initialValue">The value to set the current checksum to</param>
+        public ChecksumGeneratorBase(uint initialValue)
+        {
+            _current = initialValue;
+        }
+
+        /// <summary>
+        /// Resets the current checksum to zero
+        /// </summary>
+        public void Reset() { _current = 0; }
+
+        /// <summary>
+        /// Gets the current checksum value
+        /// </summary>
+        public uint Value { get { return _current; } }
+
+        /// <summary>
+        /// Updates the current checksum with part of an array of bytes
+        /// </summary>
+        /// <param name="data">The data to update the checksum with</param>
+        /// <param name="offset">Where in <c>data</c> to start updating</param>
+        /// <param name="count">The number of bytes from <c>data</c> to use</param>
+        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
+        /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
+        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
+        /// <remarks>All the other <c>Update</c> methods are implmeneted in terms of this one. 
+        /// This is therefore the only method a derived class has to implement</remarks>
+        public abstract void Update(byte[] data, int offset, int count);
+
+        /// <summary>
+        /// Updates the current checksum with an array of bytes.
+        /// </summary>
+        /// <param name="data">The data to update the checksum with</param>
+        public void Update(byte[] data)
+        {
+            Update(data, 0, data.Length);
+        }
+
+        /// <summary>
+        /// Updates the current checksum with the data from a string
+        /// </summary>
+        /// <param name="data">The string to update the checksum with</param>
+        /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
+        public void Update(string data)
+        {
+			Update(Encoding.UTF8.GetBytes(data));
+        }
+
+        /// <summary>
+        /// Updates the current checksum with the data from a string, using a specific encoding
+        /// </summary>
+        /// <param name="data">The string to update the checksum with</param>
+        /// <param name="encoding">The encoding to use</param>
+        public void Update(string data, Encoding encoding)
+        {
+            Update(encoding.GetBytes(data));
+        }
+
+    }
+    #endregion
+
+    #region CRC32
+    /// <summary>
+    /// Implements a CRC32 checksum generator
+    /// </summary>
+    public sealed class CRC32Checksum : ChecksumGeneratorBase    
+    {
+        #region DLL imports
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern uint crc32(uint crc, int data, uint length);
+
+        #endregion
+
+        /// <summary>
+        /// Initializes a new instance of the CRC32 checksum generator
+        /// </summary>
+        public CRC32Checksum() : base() {}
+
+        /// <summary>
+        /// Initializes a new instance of the CRC32 checksum generator with a specified value
+        /// </summary>
+        /// <param name="initialValue">The value to set the current checksum to</param>
+        public CRC32Checksum(uint initialValue) : base(initialValue) {}
+
+        /// <summary>
+        /// Updates the current checksum with part of an array of bytes
+        /// </summary>
+        /// <param name="data">The data to update the checksum with</param>
+        /// <param name="offset">Where in <c>data</c> to start updating</param>
+        /// <param name="count">The number of bytes from <c>data</c> to use</param>
+        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
+        /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
+        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
+        public override void Update(byte[] data, int offset, int count)
+        {
+            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
+            if ((offset+count) > data.Length) throw new ArgumentException();
+            GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
+            try
+            {
+                _current = crc32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
+            }
+            finally
+            {
+                hData.Free();
+            }
+        }
+
+    }
+    #endregion
+
+    #region Adler
+    /// <summary>
+    /// Implements a checksum generator that computes the Adler checksum on data
+    /// </summary>
+    public sealed class AdlerChecksum : ChecksumGeneratorBase    
+    {
+        #region DLL imports
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern uint adler32(uint adler, int data, uint length);
+
+        #endregion
+
+        /// <summary>
+        /// Initializes a new instance of the Adler checksum generator
+        /// </summary>
+        public AdlerChecksum() : base() {}
+
+        /// <summary>
+        /// Initializes a new instance of the Adler checksum generator with a specified value
+        /// </summary>
+        /// <param name="initialValue">The value to set the current checksum to</param>
+        public AdlerChecksum(uint initialValue) : base(initialValue) {}
+
+        /// <summary>
+        /// Updates the current checksum with part of an array of bytes
+        /// </summary>
+        /// <param name="data">The data to update the checksum with</param>
+        /// <param name="offset">Where in <c>data</c> to start updating</param>
+        /// <param name="count">The number of bytes from <c>data</c> to use</param>
+        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
+        /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
+        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
+        public override void Update(byte[] data, int offset, int count)
+        {
+            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
+            if ((offset+count) > data.Length) throw new ArgumentException();
+            GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
+            try
+            {
+                _current = adler32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
+            }
+            finally
+            {
+                hData.Free();
+            }
+        }
+
+    }
+    #endregion
+
+}
--- a/contrib/dotzlib/DotZLib/CircularBuffer.cs
+++ b/contrib/dotzlib/DotZLib/CircularBuffer.cs
@@ -0,0 +1,83 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.Diagnostics;
+
+namespace DotZLib
+{
+
+	/// <summary>
+	/// This class implements a circular buffer
+	/// </summary>
+	internal class CircularBuffer
+	{
+        #region Private data
+        private int _capacity;
+        private int _head;
+        private int _tail;
+        private int _size;
+        private byte[] _buffer;
+        #endregion
+
+        public CircularBuffer(int capacity)
+        {    
+            Debug.Assert( capacity > 0 );
+            _buffer = new byte[capacity];
+            _capacity = capacity;
+            _head = 0;
+            _tail = 0;
+            _size = 0;
+        }
+
+        public int Size { get { return _size; } }
+
+        public int Put(byte[] source, int offset, int count)
+        {
+            Debug.Assert( count > 0 );
+            int trueCount = Math.Min(count, _capacity - Size);
+            for (int i = 0; i < trueCount; ++i)
+                _buffer[(_tail+i) % _capacity] = source[offset+i];
+            _tail += trueCount;
+            _tail %= _capacity;
+            _size += trueCount;
+            return trueCount;
+        }
+
+        public bool Put(byte b)
+        {
+            if (Size == _capacity) // no room
+                return false;
+            _buffer[_tail++] = b;
+            _tail %= _capacity;
+            ++_size;
+            return true;
+        }
+
+        public int Get(byte[] destination, int offset, int count)
+        {
+            int trueCount = Math.Min(count,Size);
+            for (int i = 0; i < trueCount; ++i)
+                destination[offset + i] = _buffer[(_head+i) % _capacity];
+            _head += trueCount;
+            _head %= _capacity;
+            _size -= trueCount;
+            return trueCount;
+        }
+
+        public int Get()
+        {
+            if (Size == 0)
+                return -1;
+
+            int result = (int)_buffer[_head++ % _capacity];
+            --_size;
+            return result;
+        }
+
+    }
+}
--- a/contrib/dotzlib/DotZLib/CodecBase.cs
+++ b/contrib/dotzlib/DotZLib/CodecBase.cs
@@ -0,0 +1,198 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace DotZLib
+{
+	/// <summary>
+	/// Implements the common functionality needed for all <see cref="Codec"/>s
+	/// </summary>
+	public abstract class CodecBase : Codec, IDisposable
+	{
+
+        #region Data members
+
+        /// <summary>
+        /// Instance of the internal zlib buffer structure that is 
+        /// passed to all functions in the zlib dll
+        /// </summary>
+        internal ZStream _ztream = new ZStream();
+
+        /// <summary>
+        /// True if the object instance has been disposed, false otherwise
+        /// </summary>
+        protected bool _isDisposed = false;
+
+        /// <summary>
+        /// The size of the internal buffers
+        /// </summary>
+        protected const int kBufferSize = 16384;
+
+        private byte[] _outBuffer = new byte[kBufferSize];
+        private byte[] _inBuffer = new byte[kBufferSize];
+
+        private GCHandle _hInput;
+        private GCHandle _hOutput;
+
+        private uint _checksum = 0;
+
+        #endregion
+
+        /// <summary>
+        /// Initializes a new instance of the <c>CodeBase</c> class. 
+        /// </summary>
+		public CodecBase()
+		{
+            try
+            {
+                _hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);
+                _hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);
+            }
+            catch (Exception)
+            {
+                CleanUp(false);
+                throw;
+            }
+        }
+
+
+        #region Codec Members
+
+        /// <summary>
+        /// Occurs when more processed data are available.
+        /// </summary>
+        public event DataAvailableHandler DataAvailable;
+
+        /// <summary>
+        /// Fires the <see cref="DataAvailable"/> event
+        /// </summary>
+        protected void OnDataAvailable()
+        {
+            if (_ztream.total_out > 0)
+            {
+                if (DataAvailable != null)
+                    DataAvailable( _outBuffer, 0, (int)_ztream.total_out); 
+                resetOutput();
+            }
+        }
+
+        /// <summary>
+        /// Adds more data to the codec to be processed.
+        /// </summary>
+        /// <param name="data">Byte array containing the data to be added to the codec</param>
+        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
+        public void Add(byte[] data)
+        {
+            Add(data,0,data.Length);
+        }
+
+        /// <summary>
+        /// Adds more data to the codec to be processed.
+        /// </summary>
+        /// <param name="data">Byte array containing the data to be added to the codec</param>
+        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
+        /// <param name="count">The number of bytes to add</param>
+        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
+        /// <remarks>This must be implemented by a derived class</remarks>
+        public abstract void Add(byte[] data, int offset, int count);
+
+        /// <summary>
+        /// Finishes up any pending data that needs to be processed and handled.
+        /// </summary>
+        /// <remarks>This must be implemented by a derived class</remarks>
+        public abstract void Finish();
+
+        /// <summary>
+        /// Gets the checksum of the data that has been added so far
+        /// </summary>
+        public uint Checksum { get { return _checksum; } }
+
+        #endregion
+
+        #region Destructor & IDisposable stuff
+
+        /// <summary>
+        /// Destroys this instance
+        /// </summary>
+        ~CodecBase()
+        {
+            CleanUp(false);
+        }
+
+        /// <summary>
+        /// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class
+        /// </summary>
+        public void Dispose()
+        {
+            CleanUp(true);
+        }
+
+        /// <summary>
+        /// Performs any codec specific cleanup
+        /// </summary>
+        /// <remarks>This must be implemented by a derived class</remarks>
+        protected abstract void CleanUp();
+
+        // performs the release of the handles and calls the dereived CleanUp()
+        private void CleanUp(bool isDisposing)
+        {
+            if (!_isDisposed)
+            {
+                CleanUp();
+                if (_hInput.IsAllocated)
+                    _hInput.Free();
+                if (_hOutput.IsAllocated)
+                    _hOutput.Free();
+
+                _isDisposed = true;
+            }
+        }
+
+
+        #endregion
+
+        #region Helper methods
+
+        /// <summary>
+        /// Copies a number of bytes to the internal codec buffer - ready for proccesing
+        /// </summary>
+        /// <param name="data">The byte array that contains the data to copy</param>
+        /// <param name="startIndex">The index of the first byte to copy</param>
+        /// <param name="count">The number of bytes to copy from <c>data</c></param>
+        protected void copyInput(byte[] data, int startIndex, int count)
+        {
+            Array.Copy(data, startIndex, _inBuffer,0, count);
+            _ztream.next_in = _hInput.AddrOfPinnedObject();
+            _ztream.total_in = 0;
+            _ztream.avail_in = (uint)count;
+
+        }
+
+        /// <summary>
+        /// Resets the internal output buffers to a known state - ready for processing
+        /// </summary>
+        protected void resetOutput()
+        {
+            _ztream.total_out = 0;
+            _ztream.avail_out = kBufferSize;
+            _ztream.next_out = _hOutput.AddrOfPinnedObject();
+        }
+
+        /// <summary>
+        /// Updates the running checksum property
+        /// </summary>
+        /// <param name="newSum">The new checksum value</param>
+        protected void setChecksum(uint newSum)
+        {
+            _checksum = newSum;
+        }
+        #endregion
+
+    }
+}
--- a/contrib/dotzlib/DotZLib/Deflater.cs
+++ b/contrib/dotzlib/DotZLib/Deflater.cs
@@ -0,0 +1,106 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+
+namespace DotZLib
+{
+
+    /// <summary>
+    /// Implements a data compressor, using the deflate algorithm in the ZLib dll
+    /// </summary>
+	public sealed class Deflater : CodecBase
+	{
+        #region Dll imports
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
+        private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int deflate(ref ZStream sz, int flush);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int deflateReset(ref ZStream sz);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int deflateEnd(ref ZStream sz);
+        #endregion
+
+        /// <summary>
+        /// Constructs an new instance of the <c>Deflater</c>
+        /// </summary>
+        /// <param name="level">The compression level to use for this <c>Deflater</c></param>
+		public Deflater(CompressLevel level) : base()
+		{
+            int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));
+            if (retval != 0)
+                throw new ZLibException(retval, "Could not initialize deflater");
+
+            resetOutput();
+		}
+
+        /// <summary>
+        /// Adds more data to the codec to be processed.
+        /// </summary>
+        /// <param name="data">Byte array containing the data to be added to the codec</param>
+        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
+        /// <param name="count">The number of bytes to add</param>
+        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
+        public override void Add(byte[] data, int offset, int count)
+        {
+            if (data == null) throw new ArgumentNullException();
+            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
+            if ((offset+count) > data.Length) throw new ArgumentException();
+            
+            int total = count;
+            int inputIndex = offset;
+            int err = 0;
+
+            while (err >= 0 && inputIndex < total)
+            {
+                copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
+                while (err >= 0 && _ztream.avail_in > 0)
+                {
+                    err = deflate(ref _ztream, (int)FlushTypes.None);
+                    if (err == 0)
+                        while (_ztream.avail_out == 0)
+                        {
+                            OnDataAvailable();
+                            err = deflate(ref _ztream, (int)FlushTypes.None);
+                        }
+                    inputIndex += (int)_ztream.total_in;
+                }
+            }
+            setChecksum( _ztream.adler );
+        }
+
+
+        /// <summary>
+        /// Finishes up any pending data that needs to be processed and handled.
+        /// </summary>
+        public override void Finish()
+        {
+            int err;
+            do 
+            {
+                err = deflate(ref _ztream, (int)FlushTypes.Finish);
+                OnDataAvailable();
+            }
+            while (err == 0);
+            setChecksum( _ztream.adler );
+            deflateReset(ref _ztream);
+            resetOutput();
+        }
+
+        /// <summary>
+        /// Closes the internal zlib deflate stream
+        /// </summary>
+        protected override void CleanUp() { deflateEnd(ref _ztream); }
+
+    }
+}
--- a/contrib/dotzlib/DotZLib/DotZLib.cs
+++ b/contrib/dotzlib/DotZLib/DotZLib.cs
@@ -0,0 +1,288 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text;
+
+
+namespace DotZLib
+{
+
+    #region Internal types
+
+    /// <summary>
+    /// Defines constants for the various flush types used with zlib
+    /// </summary>
+    internal enum FlushTypes 
+    {
+        None,  Partial,  Sync,  Full,  Finish,  Block
+    }
+
+    #region ZStream structure
+    // internal mapping of the zlib zstream structure for marshalling
+    [StructLayoutAttribute(LayoutKind.Sequential, Pack=4, Size=0, CharSet=CharSet.Ansi)]
+    internal struct ZStream
+    {
+        public IntPtr next_in;
+        public uint avail_in;
+        public uint total_in;
+
+        public IntPtr next_out;
+        public uint avail_out;
+        public uint total_out;
+
+        [MarshalAs(UnmanagedType.LPStr)]
+        string msg; 
+        uint state;
+
+        uint zalloc;
+        uint zfree;
+        uint opaque;
+
+        int data_type;
+        public uint adler;
+        uint reserved;
+    }
+
+    #endregion
+    
+    #endregion
+
+    #region Public enums
+    /// <summary>
+    /// Defines constants for the available compression levels in zlib
+    /// </summary>
+    public enum CompressLevel : int
+    {
+        /// <summary>
+        /// The default compression level with a reasonable compromise between compression and speed
+        /// </summary>
+        Default = -1,   
+        /// <summary>
+        /// No compression at all. The data are passed straight through.
+        /// </summary>
+        None = 0,
+        /// <summary>
+        /// The maximum compression rate available.
+        /// </summary>
+        Best = 9,   
+        /// <summary>
+        /// The fastest available compression level.
+        /// </summary>
+        Fastest = 1
+    }
+    #endregion
+
+    #region Exception classes
+    /// <summary>
+    /// The exception that is thrown when an error occurs on the zlib dll
+    /// </summary>
+    public class ZLibException : ApplicationException
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified 
+        /// error message and error code
+        /// </summary>
+        /// <param name="errorCode">The zlib error code that caused the exception</param>
+        /// <param name="msg">A message that (hopefully) describes the error</param>
+        public ZLibException(int errorCode, string msg) : base(String.Format("ZLib error {0} {1}", errorCode, msg))
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified 
+        /// error code
+        /// </summary>
+        /// <param name="errorCode">The zlib error code that caused the exception</param>
+        public ZLibException(int errorCode) : base(String.Format("ZLib error {0}", errorCode))
+        {
+        }
+    }
+    #endregion
+
+    #region Interfaces
+
+    /// <summary>
+    /// Declares methods and properties that enables a running checksum to be calculated 
+    /// </summary>
+    public interface ChecksumGenerator
+    {
+        /// <summary>
+        /// Gets the current value of the checksum
+        /// </summary>
+        uint Value { get; }
+
+        /// <summary>
+        /// Clears the current checksum to 0
+        /// </summary>
+        void Reset();
+
+        /// <summary>
+        /// Updates the current checksum with an array of bytes
+        /// </summary>
+        /// <param name="data">The data to update the checksum with</param>
+        void Update(byte[] data);
+
+        /// <summary>
+        /// Updates the current checksum with part of an array of bytes
+        /// </summary>
+        /// <param name="data">The data to update the checksum with</param>
+        /// <param name="offset">Where in <c>data</c> to start updating</param>
+        /// <param name="count">The number of bytes from <c>data</c> to use</param>
+        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
+        /// <exception cref="ArgumentNullException"><c>data</c> is a null reference</exception>
+        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
+        void Update(byte[] data, int offset, int count);
+
+        /// <summary>
+        /// Updates the current checksum with the data from a string
+        /// </summary>
+        /// <param name="data">The string to update the checksum with</param>
+        /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
+        void Update(string data);
+
+        /// <summary>
+        /// Updates the current checksum with the data from a string, using a specific encoding
+        /// </summary>
+        /// <param name="data">The string to update the checksum with</param>
+        /// <param name="encoding">The encoding to use</param>
+        void Update(string data, Encoding encoding);
+    }
+
+
+    /// <summary>
+    /// Represents the method that will be called from a codec when new data
+    /// are available.
+    /// </summary>
+    /// <paramref name="data">The byte array containing the processed data</paramref>
+    /// <paramref name="startIndex">The index of the first processed byte in <c>data</c></paramref>
+    /// <paramref name="count">The number of processed bytes available</paramref>
+    /// <remarks>On return from this method, the data may be overwritten, so grab it while you can. 
+    /// You cannot assume that startIndex will be zero.
+    /// </remarks>
+    public delegate void DataAvailableHandler(byte[] data, int startIndex, int count);
+
+    /// <summary>
+    /// Declares methods and events for implementing compressors/decompressors
+    /// </summary>
+    public interface Codec
+    {
+        /// <summary>
+        /// Occurs when more processed data are available.
+        /// </summary>
+        event DataAvailableHandler DataAvailable;
+
+        /// <summary>
+        /// Adds more data to the codec to be processed.
+        /// </summary>
+        /// <param name="data">Byte array containing the data to be added to the codec</param>
+        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
+        void Add(byte[] data);
+
+        /// <summary>
+        /// Adds more data to the codec to be processed.
+        /// </summary>
+        /// <param name="data">Byte array containing the data to be added to the codec</param>
+        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
+        /// <param name="count">The number of bytes to add</param>
+        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
+        void Add(byte[] data, int offset, int count);
+
+        /// <summary>
+        /// Finishes up any pending data that needs to be processed and handled.
+        /// </summary>
+        void Finish();
+
+        /// <summary>
+        /// Gets the checksum of the data that has been added so far
+        /// </summary>
+        uint Checksum { get; }
+
+
+    }
+
+    #endregion
+
+    #region Classes
+    /// <summary>
+    /// Encapsulates general information about the ZLib library
+    /// </summary>
+    public class Info
+    {
+        #region DLL imports
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern uint zlibCompileFlags();
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern string zlibVersion();
+        #endregion
+
+        #region Private stuff
+        private uint _flags;
+
+        // helper function that unpacks a bitsize mask
+        private static int bitSize(uint bits)
+        {
+            switch (bits)
+            {
+                case 0: return 16;
+                case 1: return 32;
+                case 2: return 64;
+            }
+            return -1;
+        }
+        #endregion
+
+        /// <summary>
+        /// Constructs an instance of the <c>Info</c> class.
+        /// </summary>
+        public Info()
+        {
+            _flags = zlibCompileFlags();
+        }
+
+        /// <summary>
+        /// True if the library is compiled with debug info
+        /// </summary>
+        public bool HasDebugInfo { get { return 0 != (_flags & 0x100); } }
+
+        /// <summary>
+        /// True if the library is compiled with assembly optimizations
+        /// </summary>
+        public bool UsesAssemblyCode { get { return 0 != (_flags & 0x200); } }
+
+        /// <summary>
+        /// Gets the size of the unsigned int that was compiled into Zlib
+        /// </summary>
+        public int SizeOfUInt { get { return bitSize(_flags & 3); } }
+
+        /// <summary>
+        /// Gets the size of the unsigned long that was compiled into Zlib
+        /// </summary>
+        public int SizeOfULong { get { return bitSize((_flags >> 2) & 3); } }
+
+        /// <summary>
+        /// Gets the size of the pointers that were compiled into Zlib
+        /// </summary>
+        public int SizeOfPointer { get { return bitSize((_flags >> 4) & 3); } }
+
+        /// <summary>
+        /// Gets the size of the z_off_t type that was compiled into Zlib
+        /// </summary>
+        public int SizeOfOffset { get { return bitSize((_flags >> 6) & 3); } }
+
+        /// <summary>
+        /// Gets the version of ZLib as a string, e.g. "1.2.1"
+        /// </summary>
+        public static string Version { get { return zlibVersion(); } }
+    }
+
+    #endregion
+
+}
--- a/contrib/dotzlib/DotZLib/DotZLib.csproj
+++ b/contrib/dotzlib/DotZLib/DotZLib.csproj
@@ -0,0 +1,141 @@
+<VisualStudioProject>
+    <CSHARP
+        ProjectType = "Local"
+        ProductVersion = "7.10.3077"
+        SchemaVersion = "2.0"
+        ProjectGuid = "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
+    >
+        <Build>
+            <Settings
+                ApplicationIcon = ""
+                AssemblyKeyContainerName = ""
+                AssemblyName = "DotZLib"
+                AssemblyOriginatorKeyFile = ""
+                DefaultClientScript = "JScript"
+                DefaultHTMLPageLayout = "Grid"
+                DefaultTargetSchema = "IE50"
+                DelaySign = "false"
+                OutputType = "Library"
+                PreBuildEvent = ""
+                PostBuildEvent = ""
+                RootNamespace = "DotZLib"
+                RunPostBuildEvent = "OnBuildSuccess"
+                StartupObject = ""
+            >
+                <Config
+                    Name = "Debug"
+                    AllowUnsafeBlocks = "false"
+                    BaseAddress = "285212672"
+                    CheckForOverflowUnderflow = "false"
+                    ConfigurationOverrideFile = ""
+                    DefineConstants = "DEBUG;TRACE"
+                    DocumentationFile = "docs\DotZLib.xml"
+                    DebugSymbols = "true"
+                    FileAlignment = "4096"
+                    IncrementalBuild = "false"
+                    NoStdLib = "false"
+                    NoWarn = "1591"
+                    Optimize = "false"
+                    OutputPath = "bin\Debug\"
+                    RegisterForComInterop = "false"
+                    RemoveIntegerChecks = "false"
+                    TreatWarningsAsErrors = "false"
+                    WarningLevel = "4"
+                />
+                <Config
+                    Name = "Release"
+                    AllowUnsafeBlocks = "false"
+                    BaseAddress = "285212672"
+                    CheckForOverflowUnderflow = "false"
+                    ConfigurationOverrideFile = ""
+                    DefineConstants = "TRACE"
+                    DocumentationFile = "docs\DotZLib.xml"
+                    DebugSymbols = "false"
+                    FileAlignment = "4096"
+                    IncrementalBuild = "false"
+                    NoStdLib = "false"
+                    NoWarn = ""
+                    Optimize = "true"
+                    OutputPath = "bin\Release\"
+                    RegisterForComInterop = "false"
+                    RemoveIntegerChecks = "false"
+                    TreatWarningsAsErrors = "false"
+                    WarningLevel = "4"
+                />
+            </Settings>
+            <References>
+                <Reference
+                    Name = "System"
+                    AssemblyName = "System"
+                    HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.dll"
+                />
+                <Reference
+                    Name = "System.Data"
+                    AssemblyName = "System.Data"
+                    HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.Data.dll"
+                />
+                <Reference
+                    Name = "System.XML"
+                    AssemblyName = "System.Xml"
+                    HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.XML.dll"
+                />
+                <Reference
+                    Name = "nunit.framework"
+                    AssemblyName = "nunit.framework"
+                    HintPath = "E:\apps\NUnit V2.1\\bin\nunit.framework.dll"
+                    AssemblyFolderKey = "hklm\dn\nunit.framework"
+                />
+            </References>
+        </Build>
+        <Files>
+            <Include>
+                <File
+                    RelPath = "AssemblyInfo.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "ChecksumImpl.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "CircularBuffer.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "CodecBase.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "Deflater.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "DotZLib.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "GZipStream.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "Inflater.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+                <File
+                    RelPath = "UnitTests.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
+            </Include>
+        </Files>
+    </CSHARP>
+</VisualStudioProject>
+
--- a/contrib/dotzlib/DotZLib/GZipStream.cs
+++ b/contrib/dotzlib/DotZLib/GZipStream.cs
@@ -0,0 +1,301 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace DotZLib
+{
+	/// <summary>
+	/// Implements a compressed <see cref="Stream"/>, in GZip (.gz) format.
+	/// </summary>
+	public class GZipStream : Stream, IDisposable
+	{
+        #region Dll Imports
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
+        private static extern IntPtr gzopen(string name, string mode);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int gzclose(IntPtr gzFile);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int gzwrite(IntPtr gzFile, int data, int length);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int gzread(IntPtr gzFile, int data, int length);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int gzgetc(IntPtr gzFile);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int gzputc(IntPtr gzFile, int c);
+
+        #endregion
+
+        #region Private data
+        private IntPtr _gzFile;
+        private bool _isDisposed = false;
+        private bool _isWriting;
+        #endregion
+
+        #region Constructors
+        /// <summary>
+        /// Creates a new file as a writeable GZipStream
+        /// </summary>
+        /// <param name="fileName">The name of the compressed file to create</param>
+        /// <param name="level">The compression level to use when adding data</param>
+        /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
+		public GZipStream(string fileName, CompressLevel level)
+		{
+            _isWriting = true;
+            _gzFile = gzopen(fileName, String.Format("wb{0}", (int)level));
+            if (_gzFile == IntPtr.Zero)
+                throw new ZLibException(-1, "Could not open " + fileName);
+		}
+
+        /// <summary>
+        /// Opens an existing file as a readable GZipStream
+        /// </summary>
+        /// <param name="fileName">The name of the file to open</param>
+        /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
+        public GZipStream(string fileName)
+        {
+            _isWriting = false;
+            _gzFile = gzopen(fileName, "rb");
+            if (_gzFile == IntPtr.Zero)
+                throw new ZLibException(-1, "Could not open " + fileName);
+
+        }
+        #endregion
+
+        #region Access properties
+        /// <summary>
+        /// Returns true of this stream can be read from, false otherwise
+        /// </summary>
+        public override bool CanRead
+        {
+            get
+            {
+                return !_isWriting;
+            }
+        }
+    
+
+        /// <summary>
+        /// Returns false.
+        /// </summary>
+        public override bool CanSeek
+        {
+            get
+            {
+                return false;
+            }
+        }
+    
+        /// <summary>
+        /// Returns true if this tsream is writeable, false otherwise
+        /// </summary>
+        public override bool CanWrite
+        {
+            get
+            {
+                return _isWriting;
+            }
+        }
+        #endregion
+    
+        #region Destructor & IDispose stuff
+
+        /// <summary>
+        /// Destroys this instance
+        /// </summary>
+        ~GZipStream()
+        {
+            cleanUp(false);
+        }
+
+        /// <summary>
+        /// Closes the external file handle
+        /// </summary>
+        public void Dispose()
+        {
+            cleanUp(true);
+        }
+
+        // Does the actual closing of the file handle.
+        private void cleanUp(bool isDisposing)
+        {
+            if (!_isDisposed)
+            {
+                gzclose(_gzFile);
+                _isDisposed = true;
+            }
+        }
+        #endregion
+    
+        #region Basic reading and writing
+        /// <summary>
+        /// Attempts to read a number of bytes from the stream.
+        /// </summary>
+        /// <param name="buffer">The destination data buffer</param>
+        /// <param name="offset">The index of the first destination byte in <c>buffer</c></param>
+        /// <param name="count">The number of bytes requested</param>
+        /// <returns>The number of bytes read</returns>
+        /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
+        /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
+        /// <exception cref="ArgumentException">If <c>offset</c>  + <c>count</c> is &gt; buffer.Length</exception>
+        /// <exception cref="NotSupportedException">If this stream is not readable.</exception>
+        /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            if (!CanRead) throw new NotSupportedException();
+            if (buffer == null) throw new ArgumentNullException();
+            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
+            if ((offset+count) > buffer.Length) throw new ArgumentException();
+            if (_isDisposed) throw new ObjectDisposedException("GZipStream");
+
+            GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
+            int result;
+            try
+            {
+                result = gzread(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
+                if (result < 0)
+                    throw new IOException();
+            }
+            finally
+            {
+                h.Free();
+            }
+            return result;
+        }
+
+        /// <summary>
+        /// Attempts to read a single byte from the stream.
+        /// </summary>
+        /// <returns>The byte that was read, or -1 in case of error or End-Of-File</returns>
+        public override int ReadByte()
+        {
+            if (!CanRead) throw new NotSupportedException();
+            if (_isDisposed) throw new ObjectDisposedException("GZipStream");
+            return gzgetc(_gzFile);
+        }
+
+        /// <summary>
+        /// Writes a number of bytes to the stream
+        /// </summary>
+        /// <param name="buffer"></param>
+        /// <param name="offset"></param>
+        /// <param name="count"></param>
+        /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
+        /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
+        /// <exception cref="ArgumentException">If <c>offset</c>  + <c>count</c> is &gt; buffer.Length</exception>
+        /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
+        /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
+        public override void Write(byte[] buffer, int offset, int count)
+        {
+            if (!CanWrite) throw new NotSupportedException();
+            if (buffer == null) throw new ArgumentNullException();
+            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
+            if ((offset+count) > buffer.Length) throw new ArgumentException();
+            if (_isDisposed) throw new ObjectDisposedException("GZipStream");
+
+            GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
+            try
+            {
+                int result = gzwrite(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
+                if (result < 0)
+                    throw new IOException();
+            }
+            finally
+            {
+                h.Free();
+            }
+        }
+
+        /// <summary>
+        /// Writes a single byte to the stream
+        /// </summary>
+        /// <param name="value">The byte to add to the stream.</param>
+        /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
+        /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
+        public override void WriteByte(byte value)
+        {
+            if (!CanWrite) throw new NotSupportedException();
+            if (_isDisposed) throw new ObjectDisposedException("GZipStream");
+
+            int result = gzputc(_gzFile, (int)value);
+            if (result < 0)
+                throw new IOException();
+        }
+        #endregion
+
+        #region Position & length stuff
+        /// <summary>
+        /// Not supported.
+        /// </summary>
+        /// <param name="value"></param>
+        /// <exception cref="NotSupportedException">Always thrown</exception>
+        public override void SetLength(long value)
+        {
+            throw new NotSupportedException();
+        }
+    
+        /// <summary>
+        ///  Not suppported.
+        /// </summary>
+        /// <param name="offset"></param>
+        /// <param name="origin"></param>
+        /// <returns></returns>
+        /// <exception cref="NotSupportedException">Always thrown</exception>
+        public override long Seek(long offset, SeekOrigin origin)
+        {
+            throw new NotSupportedException();
+        }
+    
+        /// <summary>
+        /// Flushes the <c>GZipStream</c>.
+        /// </summary>
+        /// <remarks>In this implementation, this method does nothing. This is because excessive
+        /// flushing may degrade the achievable compression rates.</remarks>
+        public override void Flush()
+        {
+            // left empty on purpose
+        }
+    
+        /// <summary>
+        /// Gets/sets the current position in the <c>GZipStream</c>. Not suppported.
+        /// </summary>
+        /// <remarks>In this implementation this property is not supported</remarks>
+        /// <exception cref="NotSupportedException">Always thrown</exception>
+        public override long Position
+        {
+            get
+            {
+                throw new NotSupportedException();
+            }
+            set
+            {
+                throw new NotSupportedException();
+            }
+        }
+    
+        /// <summary>
+        /// Gets the size of the stream. Not suppported.
+        /// </summary>
+        /// <remarks>In this implementation this property is not supported</remarks>
+        /// <exception cref="NotSupportedException">Always thrown</exception>
+        public override long Length
+        {
+            get
+            {
+                throw new NotSupportedException();
+            }
+        }
+        #endregion
+    }
+}
--- a/contrib/dotzlib/DotZLib/Inflater.cs
+++ b/contrib/dotzlib/DotZLib/Inflater.cs
@@ -0,0 +1,105 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+
+namespace DotZLib
+{
+    
+    /// <summary>
+    /// Implements a data decompressor, using the inflate algorithm in the ZLib dll
+    /// </summary>
+    public class Inflater : CodecBase
+	{
+        #region Dll imports
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
+        private static extern int inflateInit_(ref ZStream sz, string vs, int size);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int inflate(ref ZStream sz, int flush);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int inflateReset(ref ZStream sz);
+
+        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+        private static extern int inflateEnd(ref ZStream sz);
+        #endregion
+
+        /// <summary>
+        /// Constructs an new instance of the <c>Inflater</c>
+        /// </summary>
+        public Inflater() : base()
+		{
+            int retval = inflateInit_(ref _ztream, Info.Version, Marshal.SizeOf(_ztream));
+            if (retval != 0)
+                throw new ZLibException(retval, "Could not initialize inflater");
+
+            resetOutput();
+        }
+
+
+        /// <summary>
+        /// Adds more data to the codec to be processed.
+        /// </summary>
+        /// <param name="data">Byte array containing the data to be added to the codec</param>
+        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
+        /// <param name="count">The number of bytes to add</param>
+        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
+        public override void Add(byte[] data, int offset, int count)
+        {
+            if (data == null) throw new ArgumentNullException();
+            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
+            if ((offset+count) > data.Length) throw new ArgumentException();
+
+            int total = count;
+            int inputIndex = offset;
+            int err = 0;
+
+            while (err >= 0 && inputIndex < total)
+            {
+                copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
+                err = inflate(ref _ztream, (int)FlushTypes.None);
+                if (err == 0)
+                    while (_ztream.avail_out == 0)
+                    {
+                        OnDataAvailable();
+                        err = inflate(ref _ztream, (int)FlushTypes.None);
+                    }
+
+                inputIndex += (int)_ztream.total_in;
+            }
+            setChecksum( _ztream.adler );
+        }
+
+
+        /// <summary>
+        /// Finishes up any pending data that needs to be processed and handled.
+        /// </summary>
+        public override void Finish()
+        {
+            int err;
+            do 
+            {
+                err = inflate(ref _ztream, (int)FlushTypes.Finish);
+                OnDataAvailable();
+            }
+            while (err == 0);
+            setChecksum( _ztream.adler );
+            inflateReset(ref _ztream);
+            resetOutput();
+        }
+
+        /// <summary>
+        /// Closes the internal zlib inflate stream
+        /// </summary>
+        protected override void CleanUp() { inflateEnd(ref _ztream); }
+
+
+	}
+}
--- a/contrib/dotzlib/DotZLib/UnitTests.cs
+++ b/contrib/dotzlib/DotZLib/UnitTests.cs
@@ -0,0 +1,274 @@
+//
+// <20> Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.Collections;
+using System.IO;
+
+// uncomment the define below to include unit tests
+//#define nunit
+#if nunit
+using NUnit.Framework;
+
+// Unit tests for the DotZLib class library
+// ----------------------------------------
+//
+// Use this with NUnit 2 from http://www.nunit.org
+//
+
+namespace DotZLibTests
+{
+    using DotZLib;
+
+    // helper methods
+    internal class Utils
+    {
+        public static bool byteArrEqual( byte[] lhs, byte[] rhs )
+        {
+            if (lhs.Length != rhs.Length)
+                return false;
+            for (int i = lhs.Length-1; i >= 0; --i)
+                if (lhs[i] != rhs[i])
+                    return false;
+            return true;
+        }
+
+    }
+
+
+    [TestFixture]
+    public class CircBufferTests
+    {
+        #region Circular buffer tests
+        [Test]
+        public void SinglePutGet()
+        {
+            CircularBuffer buf = new CircularBuffer(10);
+            Assert.AreEqual( 0, buf.Size );
+            Assert.AreEqual( -1, buf.Get() );
+
+            Assert.IsTrue(buf.Put( 1 ));
+            Assert.AreEqual( 1, buf.Size );
+            Assert.AreEqual( 1, buf.Get() );
+            Assert.AreEqual( 0, buf.Size );
+            Assert.AreEqual( -1, buf.Get() );
+        }
+
+        [Test]
+        public void BlockPutGet()
+        {
+            CircularBuffer buf = new CircularBuffer(10);
+            byte[] arr = {1,2,3,4,5,6,7,8,9,10};
+            Assert.AreEqual( 10, buf.Put(arr,0,10) );
+            Assert.AreEqual( 10, buf.Size );
+            Assert.IsFalse( buf.Put(11) );
+            Assert.AreEqual( 1, buf.Get() );
+            Assert.IsTrue( buf.Put(11) );
+
+            byte[] arr2 = (byte[])arr.Clone();
+            Assert.AreEqual( 9, buf.Get(arr2,1,9) );
+            Assert.IsTrue( Utils.byteArrEqual(arr,arr2) );
+        }
+
+        #endregion
+    }
+
+    [TestFixture]
+    public class ChecksumTests
+    {
+        #region CRC32 Tests
+        [Test]
+        public void CRC32_Null()
+        {
+            CRC32Checksum crc32 = new CRC32Checksum();
+            Assert.AreEqual( 0, crc32.Value );
+
+            crc32 = new CRC32Checksum(1);
+            Assert.AreEqual( 1, crc32.Value );
+
+            crc32 = new CRC32Checksum(556);
+            Assert.AreEqual( 556, crc32.Value );
+        }
+
+        [Test]
+        public void CRC32_Data()
+        {
+            CRC32Checksum crc32 = new CRC32Checksum();
+            byte[] data = { 1,2,3,4,5,6,7 };
+            crc32.Update(data);
+            Assert.AreEqual( 0x70e46888, crc32.Value  );
+
+            crc32 = new CRC32Checksum();
+            crc32.Update("penguin");
+            Assert.AreEqual( 0x0e5c1a120, crc32.Value );
+
+            crc32 = new CRC32Checksum(1);
+            crc32.Update("penguin");
+            Assert.AreEqual(0x43b6aa94, crc32.Value);
+
+        }
+        #endregion
+
+        #region Adler tests
+
+        [Test]
+        public void Adler_Null()
+        {
+            AdlerChecksum adler = new AdlerChecksum();
+            Assert.AreEqual(0, adler.Value);
+
+            adler = new AdlerChecksum(1);
+            Assert.AreEqual( 1, adler.Value );
+
+            adler = new AdlerChecksum(556);
+            Assert.AreEqual( 556, adler.Value );
+        }
+
+        [Test]
+        public void Adler_Data()
+        {
+            AdlerChecksum adler = new AdlerChecksum(1);
+            byte[] data = { 1,2,3,4,5,6,7 };
+            adler.Update(data);
+            Assert.AreEqual( 0x5b001d, adler.Value  );
+
+            adler = new AdlerChecksum();
+            adler.Update("penguin");
+            Assert.AreEqual(0x0bcf02f6, adler.Value );
+
+            adler = new AdlerChecksum(1);
+            adler.Update("penguin");
+            Assert.AreEqual(0x0bd602f7, adler.Value);
+
+        }
+        #endregion
+    }
+
+    [TestFixture]
+    public class InfoTests
+    {
+        #region Info tests
+        [Test]
+        public void Info_Version()
+        {
+            Info info = new Info();
+            Assert.AreEqual("1.2.2", Info.Version);
+            Assert.AreEqual(32, info.SizeOfUInt);
+            Assert.AreEqual(32, info.SizeOfULong);
+            Assert.AreEqual(32, info.SizeOfPointer);
+            Assert.AreEqual(32, info.SizeOfOffset);
+        }
+        #endregion
+    }
+
+    [TestFixture]
+    public class DeflateInflateTests
+    {
+        #region Deflate tests
+        [Test]
+        public void Deflate_Init()
+        {
+            using (Deflater def = new Deflater(CompressLevel.Default))
+            {
+            }
+        }
+
+        private ArrayList compressedData = new ArrayList();
+        private uint adler1;
+
+        private ArrayList uncompressedData = new ArrayList();
+        private uint adler2;
+
+        public void CDataAvail(byte[] data, int startIndex, int count)
+        {
+            for (int i = 0; i < count; ++i)
+                compressedData.Add(data[i+startIndex]);
+        }
+
+        [Test]
+        public void Deflate_Compress()
+        {
+            compressedData.Clear();
+
+            byte[] testData = new byte[35000];
+            for (int i = 0; i < testData.Length; ++i)
+                testData[i] = 5;
+
+            using (Deflater def = new Deflater((CompressLevel)5))
+            {
+                def.DataAvailable += new DataAvailableHandler(CDataAvail);
+                def.Add(testData);
+                def.Finish();
+                adler1 = def.Checksum;
+            }
+        }
+        #endregion
+
+        #region Inflate tests
+        [Test]
+        public void Inflate_Init()
+        {
+            using (Inflater inf = new Inflater())
+            {
+            }
+        }
+
+        private void DDataAvail(byte[] data, int startIndex, int count)
+        {
+            for (int i = 0; i < count; ++i)
+                uncompressedData.Add(data[i+startIndex]);
+        }
+
+        [Test]
+        public void Inflate_Expand()
+        { 
+            uncompressedData.Clear();
+
+            using (Inflater inf = new Inflater())
+            {
+                inf.DataAvailable += new DataAvailableHandler(DDataAvail);
+                inf.Add((byte[])compressedData.ToArray(typeof(byte)));
+                inf.Finish();
+                adler2 = inf.Checksum;
+            }
+            Assert.AreEqual( adler1, adler2 );
+        }
+        #endregion
+    }
+
+    [TestFixture]
+    public class GZipStreamTests
+    {
+        #region GZipStream test
+        [Test]
+        public void GZipStream_WriteRead()
+        {
+            using (GZipStream gzOut = new GZipStream("gzstream.gz", CompressLevel.Best))
+            {
+                BinaryWriter writer = new BinaryWriter(gzOut);
+                writer.Write("hi there");
+                writer.Write(Math.PI);
+                writer.Write(42);
+            }
+
+            using (GZipStream gzIn = new GZipStream("gzstream.gz"))
+            {
+                BinaryReader reader = new BinaryReader(gzIn);
+                string s = reader.ReadString();
+                Assert.AreEqual("hi there",s);
+                double d = reader.ReadDouble();
+                Assert.AreEqual(Math.PI, d);
+                int i = reader.ReadInt32();
+                Assert.AreEqual(42,i);
+            }
+
+        }
+        #endregion
+	}
+}
+
+#endif
--- a/contrib/dotzlib/LICENSE_1_0.txt
+++ b/contrib/dotzlib/LICENSE_1_0.txt
@@ -0,0 +1,23 @@
+Boost Software License - Version 1.0 - August 17th, 2003
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
--- a/contrib/dotzlib/readme.txt
+++ b/contrib/dotzlib/readme.txt
@@ -0,0 +1,58 @@
+This directory contains a .Net wrapper class library for the ZLib1.dll
+
+The wrapper includes support for inflating/deflating memory buffers, 
+.Net streaming wrappers for the gz streams part of zlib, and wrappers
+for the checksum parts of zlib. See DotZLib/UnitTests.cs for examples.
+
+Directory structure:
+--------------------
+
+LICENSE_1_0.txt       - License file.
+readme.txt            - This file.
+DotZLib.chm           - Class library documentation
+DotZLib.build         - NAnt build file
+DotZLib.sln           - Microsoft Visual Studio 2003 solution file
+
+DotZLib\*.cs          - Source files for the class library
+
+Unit tests:
+-----------
+The file DotZLib/UnitTests.cs contains unit tests for use with NUnit 2.1 or higher.
+To include unit tests in the build, define nunit before building.
+
+
+Build instructions:
+-------------------
+
+1. Using Visual Studio.Net 2003:
+   Open DotZLib.sln in VS.Net and build from there. Output file (DotZLib.dll)
+   will be found ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on 
+   you are building the release or debug version of the library. Check 
+   DotZLib/UnitTests.cs for instructions on how to include unit tests in the
+   build.
+   
+2. Using NAnt:
+   Open a command prompt with access to the build environment and run nant
+   in the same directory as the DotZLib.build file.
+   You can define 2 properties on the nant command-line to control the build:
+   debug={true|false} to toggle between release/debug builds (default=true).
+   nunit={true|false} to include or esclude unit tests (default=true).
+   Also the target clean will remove binaries.
+   Output file (DotZLib.dll) will be found in either ./DotZLib/bin/release 
+   or ./DotZLib/bin/debug, depending on whether you are building the release 
+   or debug version of the library.
+
+   Examples: 
+     nant -D:debug=false -D:nunit=false
+       will build a release mode version of the library without unit tests.
+     nant
+       will build a debug version of the library with unit tests 
+     nant clean
+       will remove all previously built files.
+
+
+---------------------------------
+Copyright (c) Henrik Ravn 2004
+
+Use, modification and distribution are subject to the Boost Software License, Version 1.0. 
+(See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
--- a/contrib/gzappend/gzappend.c
+++ b/contrib/gzappend/gzappend.c
@@ -48,10 +48,10 @@
   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
+   zlib 1.2.x'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
+   another required feature of zlib 1.2.x 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.

--- a/contrib/infback9/infback9.c
+++ b/contrib/infback9/infback9.c
@@ -430,6 +430,9 @@ void FAR *out_desc;
                }
            }

+            /* handle error breaks in while */
+            if (mode == BAD) break;
+
            /* build code tables */
            state->next = state->codes;
            lencode = (code const FAR *)(state->next);
--- a/contrib/infback9/inftree9.c
+++ b/contrib/infback9/inftree9.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15

 const char inflate9_copyright[] =
-   " inflate9 1.2.1.1 Copyright 1995-2003 Mark Adler ";
+   " inflate9 1.2.2 Copyright 1995-2004 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
@@ -64,7 +64,7 @@ unsigned short FAR *work;
    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};
+        133, 133, 133, 133, 144, 199, 198};
    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,
--- a/contrib/masmx86/mkasm.bat
+++ b/contrib/masmx86/mkasm.bat
@@ -1,3 +1,3 @@
-cl /I..\.. /O2 /c gvmat32c.c
+cl /DASMV /I..\.. /O2 /c gvmat32c.c
 ml /coff /Zi /c /Flgvmat32.lst gvmat32.asm
 ml /coff /Zi /c /Flinffas32.lst inffas32.asm
--- a/contrib/minizip/ChangeLogUnzip
+++ b/contrib/minizip/ChangeLogUnzip
@@ -1,3 +1,11 @@
+Change in 1.01b (20 may 04)
+- Integrate patch from Debian package (submited by Mark Brown)
+- Add tools mztools from Xavier Roche
+
+Change in 1.01 (8 may 04)
+- fix buffer overrun risk in unzip.c (Xavier Roche)
+- fix a minor buffer insecurity in minizip.c (Mike Whittaker)
+
 Change in 1.00: (10 sept 03)
 - rename to 1.00
 - cosmetic code change
--- a/contrib/minizip/crypt.h
+++ b/contrib/minizip/crypt.h
@@ -1,9 +1,9 @@
 /* crypt.h -- base code for crypt/uncrypt ZIPfile


-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant

   This code is a modified version of crypting code in Infozip distribution

--- a/contrib/minizip/ioapi.c
+++ b/contrib/minizip/ioapi.c
@@ -1,9 +1,9 @@
 /* ioapi.c -- IO base function header for compress/uncompress .zip
   files using zlib + zip or unzip API

-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant
 */

 #include <stdio.h>
@@ -94,7 +94,7 @@ uLong ZCALLBACK fread_file_func (opaque, stream, buf, size)
   uLong size;
 {
    uLong ret;
-    ret = fread(buf, 1, (size_t)size, (FILE *)stream);
+    ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
    return ret;
 }

@@ -106,7 +106,7 @@ uLong ZCALLBACK fwrite_file_func (opaque, stream, buf, size)
   uLong size;
 {
    uLong ret;
-    ret = fwrite(buf, 1, (size_t)size, (FILE *)stream);
+    ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
    return ret;
 }

--- a/contrib/minizip/ioapi.h
+++ b/contrib/minizip/ioapi.h
@@ -1,9 +1,9 @@
 /* ioapi.h -- IO base function header for compress/uncompress .zip
   files using zlib + zip or unzip API

-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant
 */

 #ifndef _ZLIBIOAPI_H
--- a/contrib/minizip/iowin32.c
+++ b/contrib/minizip/iowin32.c
@@ -2,9 +2,9 @@
   files using zlib + zip or unzip API
   This IO API version uses the Win32 API (for Microsoft Windows)

-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant
 */

 #include <stdlib.h>
--- a/contrib/minizip/iowin32.h
+++ b/contrib/minizip/iowin32.h
@@ -2,9 +2,9 @@
   files using zlib + zip or unzip API
   This IO API version uses the Win32 API (for Microsoft Windows)

-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant
 */

 #include <windows.h>
--- a/contrib/minizip/miniunz.c
+++ b/contrib/minizip/miniunz.c
@@ -1,3 +1,11 @@
+/*
+   miniunz.c
+   Version 1.01b, May 30th, 2004
+
+   Copyright (C) 1998-2004 Gilles Vollant
+*/
+
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -27,7 +35,7 @@
  mini unzip, demo of unzip package

  usage :
-  Usage : miniunz [-exvlo] file.zip [file_to_extract]
+  Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]

  list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
    if it exists
@@ -140,17 +148,18 @@ int makedir (newdir)

 void do_banner()
 {
-    printf("MiniUnz 1.00, demo of zLib + Unz package written by Gilles Vollant\n");
+    printf("MiniUnz 1.01b, 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 [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.]\n\n" \
+    printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
           "  -e  Extract without pathname (junk paths)\n" \
           "  -x  Extract with pathname\n" \
           "  -v  list files\n" \
           "  -l  list files\n" \
+           "  -d  directory to extract into\n" \
           "  -o  overwrite files without prompting\n" \
           "  -p  extract crypted file using password\n\n");
 }
@@ -304,8 +313,14 @@ int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)
                do
                {
                    char answer[128];
-                    printf("The file %s exist. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
-                    scanf("%1s",answer);
+                    int ret;
+
+                    printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
+                    ret = scanf("%1s",answer);
+                    if (ret != 1)
+                    {
+                       exit(EXIT_FAILURE);
+                    }
                    rep = answer[0] ;
                    if ((rep>='a') && (rep<='z'))
                        rep -= 0x20;
@@ -459,6 +474,8 @@ int main(argc,argv)
    int opt_do_extract=1;
    int opt_do_extract_withoutpath=0;
    int opt_overwrite=0;
+    int opt_extractdir=0;
+    const char *dirname=NULL;
    unzFile uf=NULL;

    do_banner();
@@ -488,6 +505,12 @@ int main(argc,argv)
                        opt_do_extract = opt_do_extract_withoutpath = 1;
                    if ((c=='o') || (c=='O'))
                        opt_overwrite=1;
+                    if ((c=='d') || (c=='D'))
+                    {
+                        opt_extractdir=1;
+                        dirname=argv[i+1];
+                    }
+
                    if (((c=='p') || (c=='P')) && (i+1<argc))
                    {
                        password=argv[i+1];
@@ -499,7 +522,7 @@ int main(argc,argv)
            {
                if (zipfilename == NULL)
                    zipfilename = argv[i];
-                else if (filename_to_extract==NULL)
+                else if ((filename_to_extract==NULL) && (!opt_extractdir))
                        filename_to_extract = argv[i] ;
            }
        }
@@ -544,6 +567,12 @@ int main(argc,argv)
        return do_list(uf);
    else if (opt_do_extract==1)
    {
+        if (opt_extractdir && chdir(dirname))
+        {
+          printf("Error changing into %s, aborting\n", dirname);
+          exit(-1);
+        }
+
        if (filename_to_extract == NULL)
            return do_extract(uf,opt_do_extract_withoutpath,opt_overwrite,password);
        else
--- a/contrib/minizip/minizip.c
+++ b/contrib/minizip/minizip.c
@@ -1,3 +1,10 @@
+/*
+   minizip.c
+   Version 1.01b, May 30th, 2004
+
+   Copyright (C) 1998-2004 Gilles Vollant
+*/
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -53,8 +60,8 @@ uLong filetime(f, tmzip, dt)
 #else
 #ifdef unix
 uLong filetime(f, tmzip, dt)
-    char *f;                /* name of file to get info on */
-    tm_zip *tmzip;             /* return value: access, modific. and creation times */
+    char *f;               /* name of file to get info on */
+    tm_zip *tmzip;         /* return value: access, modific. and creation times */
    uLong *dt;             /* dostime */
 {
  int ret=0;
@@ -66,6 +73,8 @@ uLong filetime(f, tmzip, dt)
  {
    char name[MAXFILENAME+1];
    int len = strlen(f);
+    if (len > MAXFILENAME)
+      len = MAXFILENAME;

    strncpy(name, f,MAXFILENAME-1);
    /* strncpy doesnt append the trailing NULL, of the string is too long. */
@@ -120,7 +129,7 @@ int check_exist_file(filename)

 void do_banner()
 {
-    printf("MiniZip 1.00, demo of zLib + Zip package written by Gilles Vollant\n");
+    printf("MiniZip 1.01b, demo of zLib + Zip package written by Gilles Vollant\n");
    printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
 }

@@ -269,8 +278,13 @@ int main(argc,argv)
                do
                {
                    char answer[128];
-                    printf("The file %s exist. Overwrite ? [y]es, [n]o, [a]ppend : ",filename_try);
-                    scanf("%1s",answer);
+                    int ret;
+                    printf("The file %s exists. Overwrite ? [y]es, [n]o, [a]ppend : ",filename_try);
+                    ret = scanf("%1s",answer);
+                    if (ret != 1)
+                    {
+                       exit(EXIT_FAILURE);
+                    }
                    rep = answer[0] ;
                    if ((rep>='a') && (rep<='z'))
                        rep -= 0x20;
@@ -305,7 +319,12 @@ int main(argc,argv)

        for (i=zipfilenamearg+1;(i<argc) && (err==ZIP_OK);i++)
        {
-            if (((*(argv[i]))!='-') && ((*(argv[i]))!='/'))
+            if (!((((*(argv[i]))=='-') || ((*(argv[i]))=='/')) &&
+                  ((argv[i][1]=='o') || (argv[i][1]=='O') ||
+                   (argv[i][1]=='a') || (argv[i][1]=='A') ||
+                   (argv[i][1]=='p') || (argv[i][1]=='P') ||
+                   ((argv[i][1]>='0') || (argv[i][1]<='9'))) &&
+                  (strlen(argv[i]) == 2)))
            {
                FILE * fin;
                int size_read;
@@ -390,7 +409,11 @@ int main(argc,argv)
        errclose = zipClose(zf,NULL);
        if (errclose != ZIP_OK)
            printf("error in closing %s\n",filename_try);
-   }
+    }
+    else
+    {
+       do_help();
+    }

    free(buf);
    return 0;
--- a/contrib/minizip/mztools.c
+++ b/contrib/minizip/mztools.c
@@ -0,0 +1,281 @@
+/*
+  Additional tools for Minizip
+  Code: Xavier Roche '2004
+  License: Same as ZLIB (www.gzip.org)
+*/
+
+/* Code */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "zlib.h"
+#include "unzip.h"
+
+#define READ_8(adr)  ((unsigned char)*(adr))
+#define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) )
+#define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) )
+
+#define WRITE_8(buff, n) do { \
+  *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \
+} while(0)
+#define WRITE_16(buff, n) do { \
+  WRITE_8((unsigned char*)(buff), n); \
+  WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \
+} while(0)
+#define WRITE_32(buff, n) do { \
+  WRITE_16((unsigned char*)(buff), (n) & 0xffff); \
+  WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \
+} while(0)
+
+extern int ZEXPORT unzRepair(file, fileOut, fileOutTmp, nRecovered, bytesRecovered)
+const char* file;
+const char* fileOut;
+const char* fileOutTmp;
+uLong* nRecovered;
+uLong* bytesRecovered;
+{
+  int err = Z_OK;
+  FILE* fpZip = fopen(file, "rb");
+  FILE* fpOut = fopen(fileOut, "wb");
+  FILE* fpOutCD = fopen(fileOutTmp, "wb");
+  if (fpZip != NULL &&  fpOut != NULL) {
+    int entries = 0;
+    uLong totalBytes = 0;
+    char header[30];
+    char filename[256];
+    char extra[1024];
+    int offset = 0;
+    int offsetCD = 0;
+    while ( fread(header, 1, 30, fpZip) == 30 ) {
+      int currentOffset = offset;
+
+      /* File entry */
+      if (READ_32(header) == 0x04034b50) {
+        unsigned int version = READ_16(header + 4);
+        unsigned int gpflag = READ_16(header + 6);
+        unsigned int method = READ_16(header + 8);
+        unsigned int filetime = READ_16(header + 10);
+        unsigned int filedate = READ_16(header + 12);
+        unsigned int crc = READ_32(header + 14); /* crc */
+        unsigned int cpsize = READ_32(header + 18); /* compressed size */
+        unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */
+        unsigned int fnsize = READ_16(header + 26); /* file name length */
+        unsigned int extsize = READ_16(header + 28); /* extra field length */
+        filename[0] = extra[0] = '\0';
+
+        /* Header */
+        if (fwrite(header, 1, 30, fpOut) == 30) {
+          offset += 30;
+        } else {
+          err = Z_ERRNO;
+          break;
+        }
+
+        /* Filename */
+        if (fnsize > 0) {
+          if (fread(filename, 1, fnsize, fpZip) == fnsize) {
+            if (fwrite(filename, 1, fnsize, fpOut) == fnsize) {
+              offset += fnsize;
+            } else {
+              err = Z_ERRNO;
+              break;
+            }
+          } else {
+            err = Z_ERRNO;
+            break;
+          }
+        } else {
+          err = Z_STREAM_ERROR;
+          break;
+        }
+
+        /* Extra field */
+        if (extsize > 0) {
+          if (fread(extra, 1, extsize, fpZip) == extsize) {
+            if (fwrite(extra, 1, extsize, fpOut) == extsize) {
+              offset += extsize;
+            } else {
+              err = Z_ERRNO;
+              break;
+            }
+          } else {
+            err = Z_ERRNO;
+            break;
+          }
+        }
+
+        /* Data */
+        {
+          int dataSize = cpsize;
+          if (dataSize == 0) {
+            dataSize = uncpsize;
+          }
+          if (dataSize > 0) {
+            char* data = malloc(dataSize);
+            if (data != NULL) {
+              if ((int)fread(data, 1, dataSize, fpZip) == dataSize) {
+                if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) {
+                  offset += dataSize;
+                  totalBytes += dataSize;
+                } else {
+                  err = Z_ERRNO;
+                }
+              } else {
+                err = Z_ERRNO;
+              }
+              free(data);
+              if (err != Z_OK) {
+                break;
+              }
+            } else {
+              err = Z_MEM_ERROR;
+              break;
+            }
+          }
+        }
+
+        /* Central directory entry */
+        {
+          char header[46];
+          char* comment = "";
+          int comsize = (int) strlen(comment);
+          WRITE_32(header, 0x02014b50);
+          WRITE_16(header + 4, version);
+          WRITE_16(header + 6, version);
+          WRITE_16(header + 8, gpflag);
+          WRITE_16(header + 10, method);
+          WRITE_16(header + 12, filetime);
+          WRITE_16(header + 14, filedate);
+          WRITE_32(header + 16, crc);
+          WRITE_32(header + 20, cpsize);
+          WRITE_32(header + 24, uncpsize);
+          WRITE_16(header + 28, fnsize);
+          WRITE_16(header + 30, extsize);
+          WRITE_16(header + 32, comsize);
+          WRITE_16(header + 34, 0);     /* disk # */
+          WRITE_16(header + 36, 0);     /* int attrb */
+          WRITE_32(header + 38, 0);     /* ext attrb */
+          WRITE_32(header + 42, currentOffset);
+          /* Header */
+          if (fwrite(header, 1, 46, fpOutCD) == 46) {
+            offsetCD += 46;
+
+            /* Filename */
+            if (fnsize > 0) {
+              if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) {
+                offsetCD += fnsize;
+              } else {
+                err = Z_ERRNO;
+                break;
+              }
+            } else {
+              err = Z_STREAM_ERROR;
+              break;
+            }
+
+            /* Extra field */
+            if (extsize > 0) {
+              if (fwrite(extra, 1, extsize, fpOutCD) == extsize) {
+                offsetCD += extsize;
+              } else {
+                err = Z_ERRNO;
+                break;
+              }
+            }
+
+            /* Comment field */
+            if (comsize > 0) {
+              if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) {
+                offsetCD += comsize;
+              } else {
+                err = Z_ERRNO;
+                break;
+              }
+            }
+
+
+          } else {
+            err = Z_ERRNO;
+            break;
+          }
+        }
+
+        /* Success */
+        entries++;
+
+      } else {
+        break;
+      }
+    }
+
+    /* Final central directory  */
+    {
+      int entriesZip = entries;
+      char header[22];
+      char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools";
+      int comsize = (int) strlen(comment);
+      if (entriesZip > 0xffff) {
+        entriesZip = 0xffff;
+      }
+      WRITE_32(header, 0x06054b50);
+      WRITE_16(header + 4, 0);    /* disk # */
+      WRITE_16(header + 6, 0);    /* disk # */
+      WRITE_16(header + 8, entriesZip);   /* hack */
+      WRITE_16(header + 10, entriesZip);  /* hack */
+      WRITE_32(header + 12, offsetCD);    /* size of CD */
+      WRITE_32(header + 16, offset);      /* offset to CD */
+      WRITE_16(header + 20, comsize);     /* comment */
+
+      /* Header */
+      if (fwrite(header, 1, 22, fpOutCD) == 22) {
+
+        /* Comment field */
+        if (comsize > 0) {
+          if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) {
+            err = Z_ERRNO;
+          }
+        }
+
+      } else {
+        err = Z_ERRNO;
+      }
+    }
+
+    /* Final merge (file + central directory) */
+    fclose(fpOutCD);
+    if (err == Z_OK) {
+      fpOutCD = fopen(fileOutTmp, "rb");
+      if (fpOutCD != NULL) {
+        int nRead;
+        char buffer[8192];
+        while ( (nRead = fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) {
+          if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) {
+            err = Z_ERRNO;
+            break;
+          }
+        }
+        fclose(fpOutCD);
+      }
+    }
+
+    /* Close */
+    fclose(fpZip);
+    fclose(fpOut);
+
+    /* Wipe temporary file */
+    (void)remove(fileOutTmp);
+
+    /* Number of recovered entries */
+    if (err == Z_OK) {
+      if (nRecovered != NULL) {
+        *nRecovered = entries;
+      }
+      if (bytesRecovered != NULL) {
+        *bytesRecovered = totalBytes;
+      }
+    }
+  } else {
+    err = Z_STREAM_ERROR;
+  }
+  return err;
+}
--- a/contrib/minizip/mztools.h
+++ b/contrib/minizip/mztools.h
@@ -0,0 +1,31 @@
+/*
+  Additional tools for Minizip
+  Code: Xavier Roche '2004
+  License: Same as ZLIB (www.gzip.org)
+*/
+
+#ifndef _zip_tools_H
+#define _zip_tools_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef _ZLIB_H
+#include "zlib.h"
+#endif
+
+#include "unzip.h"
+
+/* Repair a ZIP file (missing central directory)
+   file: file to recover
+   fileOut: output file after recovery
+   fileOutTmp: temporary file name used for recovery
+*/
+extern int ZEXPORT unzRepair(const char* file,
+                             const char* fileOut,
+                             const char* fileOutTmp,
+                             uLong* nRecovered,
+                             uLong* bytesRecovered);
+
+#endif
--- a/contrib/minizip/unzip.c
+++ b/contrib/minizip/unzip.c
@@ -1,7 +1,7 @@
 /* unzip.c -- IO for uncompress .zip files using zlib
-   Version 1.00, September 10th, 2003
+   Version 1.01d, September 22th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant

   Read unzip.h for more info
 */
@@ -88,7 +88,7 @@ woven in by Terry Thorsen 1/2003.


 const char unz_copyright[] =
-   " unzip 1.00 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";
+   " unzip 1.01 Copyright 1998-2004 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
@@ -798,7 +798,8 @@ extern int ZEXPORT unzGoToNextFile (file)
    s=(unz_s*)file;
    if (!s->current_file_ok)
        return UNZ_END_OF_LIST_OF_FILE;
-    if (s->num_file+1==s->gi.number_entry)
+    if (s->gi.number_entry != 0xffff)    /* 2^16 files overflow hack */
+      if (s->num_file+1==s->gi.number_entry)
        return UNZ_END_OF_LIST_OF_FILE;

    s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
@@ -1244,9 +1245,17 @@ extern int ZEXPORT unzReadCurrentFile  (file, buf, len)

    pfile_in_zip_read_info->stream.avail_out = (uInt)len;

-    if (len>pfile_in_zip_read_info->rest_read_uncompressed)
+    if ((len>pfile_in_zip_read_info->rest_read_uncompressed) &&
+        (!(pfile_in_zip_read_info->raw)))
        pfile_in_zip_read_info->stream.avail_out =
-          (uInt)pfile_in_zip_read_info->rest_read_uncompressed;
+            (uInt)pfile_in_zip_read_info->rest_read_uncompressed;
+
+    if ((len>pfile_in_zip_read_info->rest_read_compressed+
+           pfile_in_zip_read_info->stream.avail_in) &&
+         (pfile_in_zip_read_info->raw))
+        pfile_in_zip_read_info->stream.avail_out =
+            (uInt)pfile_in_zip_read_info->rest_read_compressed+
+            pfile_in_zip_read_info->stream.avail_in;

    while (pfile_in_zip_read_info->stream.avail_out>0)
    {
@@ -1339,6 +1348,9 @@ extern int ZEXPORT unzReadCurrentFile  (file, buf, len)
            */
            err=inflate(&pfile_in_zip_read_info->stream,flush);

+            if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL))
+              err = Z_DATA_ERROR;
+
            uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
            uOutThis = uTotalOutAfter-uTotalOutBefore;

@@ -1461,7 +1473,7 @@ extern int ZEXPORT unzGetLocalExtrafield (file,buf,len)

    if (ZREAD(pfile_in_zip_read_info->z_filefunc,
              pfile_in_zip_read_info->filestream,
-              buf,size_to_read)!=size_to_read)
+              buf,read_now)!=read_now)
        return UNZ_ERRNO;

    return (int)read_now;
@@ -1544,3 +1556,40 @@ extern int ZEXPORT unzGetGlobalComment (file, szComment, uSizeBuf)
        *(szComment+s->gi.size_comment)='\0';
    return (int)uReadThis;
 }
+
+/* Additions by RX '2004 */
+extern uLong ZEXPORT unzGetOffset (file)
+    unzFile file;
+{
+    unz_s* s;
+
+    if (file==NULL)
+          return UNZ_PARAMERROR;
+    s=(unz_s*)file;
+    if (!s->current_file_ok)
+      return 0;
+    if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff)
+      if (s->num_file==s->gi.number_entry)
+         return 0;
+    return s->pos_in_central_dir;
+}
+
+extern int ZEXPORT unzSetOffset (file, pos)
+        unzFile file;
+        uLong pos;
+{
+    unz_s* s;
+    int err;
+
+    if (file==NULL)
+        return UNZ_PARAMERROR;
+    s=(unz_s*)file;
+
+    s->pos_in_central_dir = pos;
+    s->num_file = s->gi.number_entry;      /* hack */
+    err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
+                                              &s->cur_file_info_internal,
+                                              NULL,0,NULL,0,NULL,0);
+    s->current_file_ok = (err == UNZ_OK);
+    return err;
+}
--- a/contrib/minizip/unzip.h
+++ b/contrib/minizip/unzip.h
@@ -1,7 +1,7 @@
 /* unzip.h -- IO for uncompress .zip files using zlib
-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant

   This unzip package allow extract file from .ZIP file, compatible with PKZip 2.04g
     WinZip, InfoZip tools and compatible.
@@ -335,6 +335,16 @@ extern int ZEXPORT unzGetLocalExtrafield OF((unzFile file,
    the error code
 */

+/***************************************************************************/
+
+/* Get the current file offset */
+extern uLong ZEXPORT unzGetOffset (unzFile file);
+
+/* Set the current file offset */
+extern int ZEXPORT unzSetOffset (unzFile file, uLong pos);
+
+
+
 #ifdef __cplusplus
 }
 #endif
--- a/contrib/minizip/zip.c
+++ b/contrib/minizip/zip.c
@@ -1,7 +1,7 @@
 /* zip.c -- IO on .zip files using zlib
-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant

   Read zip.h for more info
 */
@@ -77,7 +77,7 @@
 #endif
 #endif
 const char zip_copyright[] =
-   " zip 1.00 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";
+   " zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";


 #define SIZEDATA_INDATABLOCK (4096-(4*4))
@@ -265,10 +265,19 @@ local int ziplocal_putValue (pzlib_filefunc_def, filestream, x, nbByte)
 {
    unsigned char buf[4];
    int n;
-    for (n = 0; n < nbByte; n++) {
+    for (n = 0; n < nbByte; n++)
+    {
        buf[n] = (unsigned char)(x & 0xff);
        x >>= 8;
    }
+    if (x != 0)
+      {     /* data overflow - hack for ZIP64 (X Roche) */
+      for (n = 0; n < nbByte; n++)
+        {
+          buf[n] = 0xff;
+        }
+      }
+
    if (ZWRITE(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte)
        return ZIP_ERRNO;
    else
@@ -287,7 +296,16 @@ local void ziplocal_putValue_inmemory (dest, x, nbByte)
        buf[n] = (unsigned char)(x & 0xff);
        x >>= 8;
    }
+
+    if (x != 0)
+    {     /* data overflow - hack for ZIP64 */
+       for (n = 0; n < nbByte; n++)
+       {
+          buf[n] = 0xff;
+       }
+    }
 }
+
 /****************************************************************************/


@@ -699,9 +717,9 @@ extern int ZEXPORT zipOpenNewFileInZip3 (file, filename, zipfi,
    if (comment==NULL)
        size_comment = 0;
    else
-        size_comment = strlen(comment);
+        size_comment = (uInt)strlen(comment);

-    size_filename = strlen(filename);
+    size_filename = (uInt)strlen(filename);

    if (zipfi == NULL)
        zi->ci.dosDate = 0;
@@ -1108,7 +1126,7 @@ extern int ZEXPORT zipClose (file, global_comment)
    if (global_comment==NULL)
        size_global_comment = 0;
    else
-        size_global_comment = strlen(global_comment);
+        size_global_comment = (uInt)strlen(global_comment);


    centraldir_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
--- a/contrib/minizip/zip.h
+++ b/contrib/minizip/zip.h
@@ -1,7 +1,7 @@
 /* zip.h -- IO for compress .zip files using zlib
-   Version 1.00, September 10th, 2003
+   Version 1.01, May 8th, 2004

-   Copyright (C) 1998-2003 Gilles Vollant
+   Copyright (C) 1998-2004 Gilles Vollant

   This unzip package allow creates .ZIP file, compatible with PKZip 2.04g
     WinZip, InfoZip tools and compatible.
@@ -212,7 +212,6 @@ extern int ZEXPORT zipCloseFileInZip OF((zipFile file));
  Close the current file in the zipfile
 */

-
 extern int ZEXPORT zipCloseFileInZipRaw OF((zipFile file,
                                            uLong uncompressed_size,
                                            uLong crc32));
--- a/contrib/pascal/zlibpas.pas
+++ b/contrib/pascal/zlibpas.pas
@@ -10,7 +10,7 @@ unit zlibpas;
 interface

 const
-  ZLIB_VERSION = '1.2.1';
+  ZLIB_VERSION = '1.2.2';

 type
  alloc_func = function(opaque: Pointer; items, size: Integer): Pointer;
--- a/contrib/untgz/untgz.c
+++ b/contrib/untgz/untgz.c
@@ -1,7 +1,7 @@
 /*
 * untgz.c -- Display contents and extract files from a gzip'd TAR file
 *
- * written by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
+ * written by Pedro A. Aranda Gutierrez <paag@tid.es>
 * adaptation to Unix by Jean-loup Gailly <jloup@gzip.org>
 * various fixes by Cosmin Truta <cosmint@cs.ubbcluj.ro>
 */
@@ -15,10 +15,10 @@
 #include "zlib.h"

 #ifdef unix
-# include <unistd.h>
+#  include <unistd.h>
 #else
-# include <direct.h>
-# include <io.h>
+#  include <direct.h>
+#  include <io.h>
 #endif

 #ifdef WIN32
@@ -28,8 +28,9 @@
 #  endif
 #  define mkdir(dirname,mode)   _mkdir(dirname)
 #  ifdef _MSC_VER
-#    define strdup(str)         _strdup(str)
 #    define access(path,mode)   _access(path,mode)
+#    define chmod(path,mode)    _chmod(path,mode)
+#    define strdup(str)         _strdup(str)
 #  endif
 #else
 #  include <utime.h>
@@ -48,7 +49,21 @@
 #define FIFOTYPE '6'            /* FIFO special */
 #define CONTTYPE '7'            /* reserved */

-#define BLOCKSIZE 512
+/* GNU tar extensions */
+
+#define GNUTYPE_DUMPDIR  'D'    /* file names from dumped directory */
+#define GNUTYPE_LONGLINK 'K'    /* long link name */
+#define GNUTYPE_LONGNAME 'L'    /* long file name */
+#define GNUTYPE_MULTIVOL 'M'    /* continuation of file from another volume */
+#define GNUTYPE_NAMES    'N'    /* file name that does not fit into main hdr */
+#define GNUTYPE_SPARSE   'S'    /* sparse file */
+#define GNUTYPE_VOLHDR   'V'    /* tape/volume header */
+
+
+/* tar header */
+
+#define BLOCKSIZE     512
+#define SHORTNAMESIZE 100

 struct tar_header
 {                               /* byte offset */
@@ -71,11 +86,20 @@ struct tar_header
                                /* 500 */
 };

-union tar_buffer {
+union tar_buffer
+{
  char               buffer[BLOCKSIZE];
  struct tar_header  header;
 };

+struct attr_item
+{
+  struct attr_item  *next;
+  char              *fname;
+  int                mode;
+  time_t             time;
+};
+
 enum { TGZ_EXTRACT, TGZ_LIST, TGZ_INVALID };

 char *TGZfname          OF((const char *));
@@ -84,6 +108,9 @@ void TGZnotfound        OF((const char *));
 int getoct              OF((char *, int));
 char *strtime           OF((time_t *));
 int setfiletime         OF((char *, time_t));
+void push_attr          OF((struct attr_item **, char *, int, time_t));
+void restore_attr       OF((struct attr_item **));
+
 int ExprMatch           OF((char *, char *));

 int makedir             OF((char *));
@@ -221,7 +248,42 @@ int setfiletime (char *fname,time_t ftime)
 }


-/* regular expression matching */
+/* push file attributes */
+
+void push_attr(struct attr_item **list,char *fname,int mode,time_t time)
+{
+  struct attr_item *item;
+
+  item = (struct attr_item *)malloc(sizeof(struct attr_item));
+  if (item == NULL)
+    error("Out of memory");
+  item->fname = strdup(fname);
+  item->mode  = mode;
+  item->time  = time;
+  item->next  = *list;
+  *list       = item;
+}
+
+
+/* restore file attributes */
+
+void restore_attr(struct attr_item **list)
+{
+  struct attr_item *item, *prev;
+
+  for (item = *list; item != NULL; )
+    {
+      setfiletime(item->fname,item->time);
+      chmod(item->fname,item->mode);
+      prev = item;
+      item = item->next;
+      free(prev);
+    }
+  *list = NULL;
+}
+
+
+/* match regular expression */

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

@@ -332,6 +394,7 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
  char   fname[BLOCKSIZE];
  int    tarmode;
  time_t tartime;
+  struct attr_item *attributes = NULL;

  if (action == TGZ_LIST)
    printf("    date      time     size                       file\n"
@@ -354,14 +417,15 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
      /*
       * If we have to get a tar header
       */
-      if (getheader == 1)
+      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 (len == 0 || buffer.header.name[0] == 0)
+            break;

          tarmode = getoct(buffer.header.mode,8);
          tartime = (time_t)getoct(buffer.header.mtime,12);
@@ -371,8 +435,25 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
              action = TGZ_INVALID;
            }

-          strcpy(fname,buffer.header.name);
+          if (getheader == 1)
+            {
+              strncpy(fname,buffer.header.name,SHORTNAMESIZE);
+              if (fname[SHORTNAMESIZE-1] != 0)
+                  fname[SHORTNAMESIZE] = 0;
+            }
+          else
+            {
+              /*
+               * The file name is longer than SHORTNAMESIZE
+               */
+              if (strncmp(fname,buffer.header.name,SHORTNAMESIZE-1) != 0)
+                  error("bad long name");
+              getheader = 1;
+            }

+          /*
+           * Act according to the type flag
+           */
          switch (buffer.header.typeflag)
            {
            case DIRTYPE:
@@ -381,7 +462,7 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
              if (action == TGZ_EXTRACT)
                {
                  makedir(fname);
-                  setfiletime(fname,tartime);
+                  push_attr(&attributes,fname,tarmode,tartime);
                }
              break;
            case REGTYPE:
@@ -419,6 +500,24 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
                }
              getheader = 0;
              break;
+            case GNUTYPE_LONGLINK:
+            case GNUTYPE_LONGNAME:
+              remaining = getoct(buffer.header.size,12);
+              if (remaining < 0 || remaining >= BLOCKSIZE)
+                {
+                  action = TGZ_INVALID;
+                  break;
+                }
+              len = gzread(in, fname, BLOCKSIZE);
+              if (len < 0)
+                error(gzerror(in, &err));
+              if (fname[BLOCKSIZE-1] != 0 || (int)strlen(fname) > remaining)
+                {
+                  action = TGZ_INVALID;
+                  break;
+                }
+              getheader = 2;
+              break;
            default:
              if (action == TGZ_LIST)
                printf(" %s     <---> %s\n",strtime(&tartime),fname);
@@ -433,7 +532,8 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
            {
              if (fwrite(&buffer,sizeof(char),bytes,outfile) != bytes)
                {
-                  fprintf(stderr,"%s: Error writing %s -- skipping\n",prog,fname);
+                  fprintf(stderr,
+                    "%s: Error writing %s -- skipping\n",prog,fname);
                  fclose(outfile);
                  outfile = NULL;
                  remove(fname);
@@ -450,7 +550,7 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
              fclose(outfile);
              outfile = NULL;
              if (action != TGZ_INVALID)
-                setfiletime(fname,tartime);
+                push_attr(&attributes,fname,tarmode,tartime);
            }
        }

@@ -464,6 +564,11 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)
        }
    }

+  /*
+   * Restore file modes and time stamps
+   */
+  restore_attr(&attributes);
+
  if (gzclose(in) != Z_OK)
    error("failed gzclose");

@@ -475,7 +580,7 @@ int tar (gzFile in,int action,int arg,int argc,char **argv)

 void help(int exitval)
 {
-  printf("untgz version 0.2\n"
+  printf("untgz version 0.2.1\n"
         "  using zlib version %s\n\n",
         zlibVersion());
  printf("Usage: untgz file.tgz            extract all files\n"
--- a/contrib/vstudio/vc7/zlib.rc
+++ b/contrib/vstudio/vc7/zlib.rc
@@ -2,8 +2,8 @@

 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1,2,1,0
-  PRODUCTVERSION 1,2,1,0
+  FILEVERSION	 1,2,2
+  PRODUCTVERSION 1,2,2
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN

    BEGIN
      VALUE "FileDescription", "zlib data compression library\0"
-      VALUE "FileVersion",	"1.2.1.0\0"
+      VALUE "FileVersion",	"1.2.2\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlib.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
--- a/crc32.c
+++ b/crc32.c
@@ -11,6 +11,14 @@

 /* @(#) $Id$ */

+/*
+  Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
+  protection on the static variables used to control the first-use generation
+  of the crc tables.  Therefore, if you #define DYNAMIC_CRC_TABLE, you should
+  first call get_crc_table() to initialize the tables before allowing more than
+  one thread to use crc32().
+ */
+
 #ifdef MAKECRCH
 #  include <stdio.h>
 #  ifndef DYNAMIC_CRC_TABLE
@@ -58,7 +66,7 @@

 #ifdef DYNAMIC_CRC_TABLE

-local int crc_table_empty = 1;
+local volatile int crc_table_empty = 1;
 local unsigned long FAR crc_table[TBLS][256];
 local void make_crc_table OF((void));
 #ifdef MAKECRCH
@@ -95,38 +103,51 @@ local void make_crc_table()
 {
    unsigned long c;
    int n, k;
-    unsigned long poly;            /* polynomial exclusive-or pattern */
+    unsigned long poly;                 /* polynomial exclusive-or pattern */
    /* terms of polynomial defining this crc (except x^32): */
+    static volatile int first = 1;      /* flag to limit concurrent making */
    static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};

-    /* make exclusive-or pattern from polynomial (0xedb88320UL) */
-    poly = 0UL;
-    for (n = 0; n < sizeof(p)/sizeof(unsigned char); n++)
-        poly |= 1UL << (31 - p[n]);
+    /* See if another task is already doing this (not thread-safe, but better
+       than nothing -- significantly reduces duration of vulnerability in
+       case the advice about DYNAMIC_CRC_TABLE is ignored) */
+    if (first) {
+        first = 0;

-    /* generate a crc for every 8-bit value */
-    for (n = 0; n < 256; n++) {
-        c = (unsigned long)n;
-        for (k = 0; k < 8; k++)
-            c = c & 1 ? poly ^ (c >> 1) : c >> 1;
-        crc_table[0][n] = c;
-    }
+        /* make exclusive-or pattern from polynomial (0xedb88320UL) */
+        poly = 0UL;
+        for (n = 0; n < sizeof(p)/sizeof(unsigned char); n++)
+            poly |= 1UL << (31 - p[n]);
+
+        /* generate a crc for every 8-bit value */
+        for (n = 0; n < 256; n++) {
+            c = (unsigned long)n;
+            for (k = 0; k < 8; k++)
+                c = c & 1 ? poly ^ (c >> 1) : c >> 1;
+            crc_table[0][n] = c;
+        }

 #ifdef BYFOUR
-    /* generate crc for each value followed by one, two, and three zeros, and
-       then the byte reversal of those as well as the first table */
-    for (n = 0; n < 256; n++) {
-        c = crc_table[0][n];
-        crc_table[4][n] = REV(c);
-        for (k = 1; k < 4; k++) {
-            c = crc_table[0][c & 0xff] ^ (c >> 8);
-            crc_table[k][n] = c;
-            crc_table[k + 4][n] = REV(c);
+        /* generate crc for each value followed by one, two, and three zeros,
+           and then the byte reversal of those as well as the first table */
+        for (n = 0; n < 256; n++) {
+            c = crc_table[0][n];
+            crc_table[4][n] = REV(c);
+            for (k = 1; k < 4; k++) {
+                c = crc_table[0][c & 0xff] ^ (c >> 8);
+                crc_table[k][n] = c;
+                crc_table[k + 4][n] = REV(c);
+            }
        }
-    }
 #endif /* BYFOUR */

-  crc_table_empty = 0;
+        crc_table_empty = 0;
+    }
+    else {      /* not first */
+        /* wait for the other guy to finish (not efficient, but rare) */
+        while (crc_table_empty)
+            ;
+    }

 #ifdef MAKECRCH
    /* write out CRC tables to crc32.h */
@@ -180,9 +201,10 @@ local void write_table(out, table)
 const unsigned long FAR * ZEXPORT get_crc_table()
 {
 #ifdef DYNAMIC_CRC_TABLE
-  if (crc_table_empty) make_crc_table();
+    if (crc_table_empty)
+        make_crc_table();
 #endif /* DYNAMIC_CRC_TABLE */
-  return (const unsigned long FAR *)crc_table;
+    return (const unsigned long FAR *)crc_table;
 }

 /* ========================================================================= */
--- a/deflate.c
+++ b/deflate.c
@@ -1,5 +1,5 @@
 /* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2003 Jean-loup Gailly.
+ * Copyright (C) 1995-2004 Jean-loup Gailly.
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

@@ -52,7 +52,7 @@
 #include "deflate.h"

 const char deflate_copyright[] =
-   " deflate 1.2.1.1 Copyright 1995-2003 Jean-loup Gailly ";
+   " deflate 1.2.2 Copyright 1995-2004 Jean-loup Gailly ";
 /*
  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
--- a/deflate.h
+++ b/deflate.h
@@ -95,7 +95,6 @@ typedef struct internal_state {
    Bytef *pending_out;  /* next pending byte to output to the stream */
    int   pending;       /* nb of bytes in the pending buffer */
    int   wrap;          /* bit 0 true for zlib, bit 1 true for gzip */
-    Byte  data_type;     /* UNKNOWN, BINARY or ASCII */
    Byte  method;        /* STORED (for zip only) or DEFLATED */
    int   last_flush;    /* value of flush param for previous deflate call */

--- a/gzio.c
+++ b/gzio.c
@@ -455,6 +455,10 @@ int ZEXPORT gzread (file, buf, len)
                    s->z_err = Z_ERRNO;
                    break;
                }
+                if (feof(s->file)) {        /* avoid error for empty file */
+                    s->z_err = Z_STREAM_END;
+                    break;
+                }
            }
            s->stream.next_in = s->inbuf;
        }
--- a/infback.c
+++ b/infback.c
@@ -434,6 +434,9 @@ void FAR *out_desc;
                }
            }

+            /* handle error breaks in while */
+            if (state->mode == BAD) break;
+
            /* build code tables */
            state->next = state->codes;
            state->lencode = (code const FAR *)(state->next);
--- a/inffast.c
+++ b/inffast.c
@@ -1,5 +1,5 @@
 /* inffast.c -- fast decoding
- * Copyright (C) 1995-2003 Mark Adler
+ * Copyright (C) 1995-2004 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

@@ -19,7 +19,7 @@
   - none
   No measurable difference:
   - Pentium III (Anderson)
-   - 68060 (Nikl)
+   - M68060 (Nikl)
 */
 #ifdef POSTINC
 #  define OFF 0
--- a/inflate.c
+++ b/inflate.c
@@ -109,6 +109,7 @@ z_streamp strm;
    state = (struct inflate_state FAR *)strm->state;
    strm->total_in = strm->total_out = state->total = 0;
    strm->msg = Z_NULL;
+    strm->adler = 1;        /* to support ill-conceived Java test suite */
    state->mode = HEAD;
    state->last = 0;
    state->havedict = 0;
@@ -861,6 +862,9 @@ int flush;
                }
            }

+            /* handle error breaks in while */
+            if (state->mode == BAD) break;
+
            /* build code tables */
            state->next = state->codes;
            state->lencode = (code const FAR *)(state->next);
--- a/inftrees.c
+++ b/inftrees.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15

 const char inflate_copyright[] =
-   " inflate 1.2.1.1 Copyright 1995-2004 Mark Adler ";
+   " inflate 1.2.2 Copyright 1995-2004 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
@@ -62,7 +62,7 @@ unsigned short FAR *work;
        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
    static const unsigned short lext[31] = { /* Length codes 257..285 extra */
        16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
-        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 202, 196};
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 199, 198};
    static const unsigned short dbase[32] = { /* Distance codes 0..29 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,
@@ -303,7 +303,6 @@ unsigned short FAR *work;
            drop = 0;
            len = root;
            next = *table;
-            curr = root;
            this.bits = (unsigned char)len;
        }

--- a/old/README
+++ b/old/README
@@ -1,3 +1,3 @@
-This directory contains files that have not been updated for zlib 1.2.1
+This directory contains files that have not been updated for zlib 1.2.x

 (Volunteers are encouraged to help clean this up.  Thanks.)
--- a/contrib/visual-basic.txt
+++ b/contrib/visual-basic.txt
--- a/projects/README.projects
+++ b/projects/README.projects
@@ -0,0 +1,38 @@
+This directory contains project files for building zlib under various
+Integrated Development Environments (IDE).
+
+If you wish to submit a new project to this directory, you should comply
+to the following requirements.  Otherwise (e.g. if you wish to integrate
+a custom piece of code that changes the zlib interface or its behavior),
+please consider submitting the project to the contrib directory.
+
+
+Requirements
+============
+
+- The project must build zlib using exclusively the source files from
+  the official zlib distribution.
+
+- If there are "official" makefiles in the zlib distribution, the builds
+  given by the makefiles must be compatible with the builds given by the
+  project.  These builds are called "official" builds.
+
+- It is possible to add non-official pieces of code to the project,
+  if the resulting build remains compatible with an official build.
+  For example, it is possible to add an "ASM build" target besides
+  the regular target, by including ASM source files from the contrib
+  directory.
+
+- If there are significant differences between the project files created
+  by different versions of an IDE (e.g. Visual C++ 6.0 vs. 7.0), the name
+  of the project directory should contain the version number of the IDE
+  for which the project is intended (e.g. "visualc6" for Visual C++ 6.0,
+  or "visualc7" for Visual C++ 7.0 and 7.1).
+
+
+Current projects
+================
+
+visualc6/   by Simon-Pierre Cadieux <methodex@methodex.ca>
+            and Cosmin Truta <cosmint@cs.ubbcluj.ro>
+        Project for Microsoft Visual C++ 6.0
--- a/projects/visualc6/README.txt
+++ b/projects/visualc6/README.txt
@@ -0,0 +1,38 @@
+Microsoft Developer Studio Project Files, Format Version 6.00 for zlib.
+
+Copyright (C) 2000-2004 Simon-Pierre Cadieux.
+Copyright (C) 2004 Cosmin Truta.
+For conditions of distribution and use, see copyright notice in zlib.h.
+
+
+To use:
+
+1) On the main menu, select "File | Open Workspace".
+   Open "zlib.dsw".
+
+2) Select "Build | Set Active Configuration".
+   Choose the configuration you wish to build.
+
+3) Select "Build | Clean".
+
+4) Select "Build | Build ... (F7)".  Ignore warning messages about
+   not being able to find certain include files (e.g. alloc.h).
+
+5) If you built one of the sample programs (example or minigzip),
+   select "Build | Execute ... (Ctrl+F5)".
+
+
+This project builds the zlib binaries as follows:
+
+* Win32_DLL_Release\zlib1.dll       DLL build
+* Win32_DLL_Debug\zlib1d.dll        DLL build (debug version)
+* Win32_DLL_ASM_Release\zlib1.dll   DLL build using ASM code
+* Win32_DLL_ASM_Debug\zlib1d.dll    DLL build using ASM code (debug version)
+* Win32_LIB_Release\zlib.lib        static build
+* Win32_LIB_Debug\zlibd.lib         static build (debug version)
+* Win32_LIB_ASM_Release\zlib.lib    static build using ASM code
+* Win32_LIB_ASM_Debug\zlibd.lib     static build using ASM code (debug version)
+
+
+For more information regarding the DLL builds, please see the DLL FAQ
+in ..\..\win32\DLL_FAQ.txt.
--- a/projects/visualc6/example.dsp
+++ b/projects/visualc6/example.dsp
@@ -0,0 +1,278 @@
+# Microsoft Developer Studio Project File - Name="example" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+CFG=example - Win32 LIB Debug
+!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 "example.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "example.mak" CFG="example - Win32 LIB Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "example - Win32 DLL Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "example - Win32 DLL Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "example - Win32 DLL ASM Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "example - Win32 DLL ASM Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "example - Win32 LIB Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "example - Win32 LIB Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "example - Win32 LIB ASM Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "example - Win32 LIB ASM Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "example - Win32 DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "example___Win32_DLL_Release"
+# PROP BASE Intermediate_Dir "example___Win32_DLL_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_Release"
+# PROP Intermediate_Dir "Win32_DLL_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 zlib1.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_DLL_Release"
+
+!ELSEIF  "$(CFG)" == "example - Win32 DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "example___Win32_DLL_Debug"
+# PROP BASE Intermediate_Dir "example___Win32_DLL_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_DLL_Debug"
+# PROP Intermediate_Dir "Win32_DLL_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_Debug"
+
+!ELSEIF  "$(CFG)" == "example - Win32 DLL ASM Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "example___Win32_DLL_ASM_Release"
+# PROP BASE Intermediate_Dir "example___Win32_DLL_ASM_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_ASM_Release"
+# PROP Intermediate_Dir "Win32_DLL_ASM_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 zlib1.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_DLL_ASM_Release"
+
+!ELSEIF  "$(CFG)" == "example - Win32 DLL ASM Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "example___Win32_DLL_ASM_Debug"
+# PROP BASE Intermediate_Dir "example___Win32_DLL_ASM_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_DLL_ASM_Debug"
+# PROP Intermediate_Dir "Win32_DLL_ASM_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_ASM_Debug"
+
+!ELSEIF  "$(CFG)" == "example - Win32 LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "example___Win32_LIB_Release"
+# PROP BASE Intermediate_Dir "example___Win32_LIB_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_Release"
+# PROP Intermediate_Dir "Win32_LIB_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 zlib.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_LIB_Release"
+
+!ELSEIF  "$(CFG)" == "example - Win32 LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "example___Win32_LIB_Debug"
+# PROP BASE Intermediate_Dir "example___Win32_LIB_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_LIB_Debug"
+# PROP Intermediate_Dir "Win32_LIB_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_LIB_Debug"
+
+!ELSEIF  "$(CFG)" == "example - Win32 LIB ASM Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "example___Win32_LIB_ASM_Release"
+# PROP BASE Intermediate_Dir "example___Win32_LIB_ASM_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_ASM_Release"
+# PROP Intermediate_Dir "Win32_LIB_ASM_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 zlib.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_LIB_ASM_Release"
+
+!ELSEIF  "$(CFG)" == "example - Win32 LIB ASM Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "example___Win32_LIB_ASM_Debug"
+# PROP BASE Intermediate_Dir "example___Win32_LIB_ASM_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_LIB_ASM_Debug"
+# PROP Intermediate_Dir "Win32_LIB_ASM_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_LIB_ASM_Debug"
+
+!ENDIF 
+
+# Begin Target
+
+# Name "example - Win32 DLL Release"
+# Name "example - Win32 DLL Debug"
+# Name "example - Win32 DLL ASM Release"
+# Name "example - Win32 DLL ASM Debug"
+# Name "example - Win32 LIB Release"
+# Name "example - Win32 LIB Debug"
+# Name "example - Win32 LIB ASM Release"
+# Name "example - Win32 LIB ASM Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=..\..\example.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# Begin Source File
+
+SOURCE=..\..\zconf.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\zlib.h
+# End Source File
+# End Group
+# End Target
+# End Project
--- a/projects/visualc6/minigzip.dsp
+++ b/projects/visualc6/minigzip.dsp
@@ -0,0 +1,278 @@
+# Microsoft Developer Studio Project File - Name="minigzip" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+CFG=minigzip - Win32 LIB Debug
+!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 "minigzip.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "minigzip.mak" CFG="minigzip - Win32 LIB Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "minigzip - Win32 DLL Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "minigzip - Win32 DLL Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "minigzip - Win32 DLL ASM Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "minigzip - Win32 DLL ASM Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "minigzip - Win32 LIB Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "minigzip - Win32 LIB Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "minigzip - Win32 LIB ASM Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "minigzip - Win32 LIB ASM Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "minigzip - Win32 DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "minigzip___Win32_DLL_Release"
+# PROP BASE Intermediate_Dir "minigzip___Win32_DLL_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_Release"
+# PROP Intermediate_Dir "Win32_DLL_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 zlib1.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_DLL_Release"
+
+!ELSEIF  "$(CFG)" == "minigzip - Win32 DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "minigzip___Win32_DLL_Debug"
+# PROP BASE Intermediate_Dir "minigzip___Win32_DLL_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_DLL_Debug"
+# PROP Intermediate_Dir "Win32_DLL_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_Debug"
+
+!ELSEIF  "$(CFG)" == "minigzip - Win32 DLL ASM Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "minigzip___Win32_DLL_ASM_Release"
+# PROP BASE Intermediate_Dir "minigzip___Win32_DLL_ASM_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_ASM_Release"
+# PROP Intermediate_Dir "Win32_DLL_ASM_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 zlib1.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_DLL_ASM_Release"
+
+!ELSEIF  "$(CFG)" == "minigzip - Win32 DLL ASM Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "minigzip___Win32_DLL_ASM_Debug"
+# PROP BASE Intermediate_Dir "minigzip___Win32_DLL_ASM_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_DLL_ASM_Debug"
+# PROP Intermediate_Dir "Win32_DLL_ASM_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_ASM_Debug"
+
+!ELSEIF  "$(CFG)" == "minigzip - Win32 LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "minigzip___Win32_LIB_Release"
+# PROP BASE Intermediate_Dir "minigzip___Win32_LIB_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_Release"
+# PROP Intermediate_Dir "Win32_LIB_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
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+# ADD LINK32 zlib.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_LIB_Release"
+
+!ELSEIF  "$(CFG)" == "minigzip - Win32 LIB Debug"
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+# PROP BASE Use_MFC 0
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+BSC32=bscmake.exe
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+# ADD LINK32 zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_LIB_Debug"
+
+!ELSEIF  "$(CFG)" == "minigzip - Win32 LIB ASM Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "minigzip___Win32_LIB_ASM_Release"
+# PROP BASE Intermediate_Dir "minigzip___Win32_LIB_ASM_Release"
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+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_ASM_Release"
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+# PROP Ignore_Export_Lib 0
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+# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
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+# SUBTRACT CPP /YX
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+# ADD RSC /l 0x409 /d "NDEBUG"
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+# ADD LINK32 zlib.lib /nologo /subsystem:console /machine:I386 /libpath:"Win32_LIB_ASM_Release"
+
+!ELSEIF  "$(CFG)" == "minigzip - Win32 LIB ASM Debug"
+
+# PROP BASE Use_MFC 0
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+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
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+# ADD LINK32 zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_LIB_ASM_Debug"
+
+!ENDIF 
+
+# Begin Target
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+# Name "minigzip - Win32 DLL Release"
+# Name "minigzip - Win32 DLL Debug"
+# Name "minigzip - Win32 DLL ASM Release"
+# Name "minigzip - Win32 DLL ASM Debug"
+# Name "minigzip - Win32 LIB Release"
+# Name "minigzip - Win32 LIB Debug"
+# Name "minigzip - Win32 LIB ASM Release"
+# Name "minigzip - Win32 LIB ASM Debug"
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+SOURCE=..\..\minigzip.c
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+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# Begin Source File
+
+SOURCE=..\..\zconf.h
+# End Source File
+# Begin Source File
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+SOURCE=..\..\zlib.h
+# End Source File
+# End Group
+# End Target
+# End Project
--- a/projects/visualc6/zlib.dsp
+++ b/projects/visualc6/zlib.dsp
@@ -0,0 +1,609 @@
+# Microsoft Developer Studio Project File - Name="zlib" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+# TARGTYPE "Win32 (x86) Static Library" 0x0104
+
+CFG=zlib - Win32 LIB Debug
+!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 "zlib.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "zlib.mak" CFG="zlib - Win32 LIB Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "zlib - Win32 DLL Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "zlib - Win32 DLL Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "zlib - Win32 DLL ASM Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "zlib - Win32 DLL ASM Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "zlib - Win32 LIB Release" (based on "Win32 (x86) Static Library")
+!MESSAGE "zlib - Win32 LIB Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE "zlib - Win32 LIB ASM Release" (based on "Win32 (x86) Static Library")
+!MESSAGE "zlib - Win32 LIB ASM Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+
+!IF  "$(CFG)" == "zlib - Win32 DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "zlib___Win32_DLL_Release"
+# PROP BASE Intermediate_Dir "zlib___Win32_DLL_Release"
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+# PROP Intermediate_Dir "Win32_DLL_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
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+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
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+# SUBTRACT CPP /YX /Yc /Yu
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+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
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+# ADD RSC /l 0x409 /d "NDEBUG"
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+# ADD BASE BSC32 /nologo
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+# ADD LINK32 /nologo /dll /machine:I386 /out:"Win32_DLL_Release\zlib1.dll"
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL Debug"
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+# PROP BASE Use_MFC 0
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+# ADD LINK32 /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\zlib1d.dll" /pdbtype:sept
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "zlib___Win32_DLL_ASM_Release"
+# PROP BASE Intermediate_Dir "zlib___Win32_DLL_ASM_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_DLL_ASM_Release"
+# PROP Intermediate_Dir "Win32_DLL_ASM_Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
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+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /D "ASMV" /D "ASMINF" /FD /c
+# SUBTRACT CPP /YX /Yc /Yu
+MTL=midl.exe
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
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+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386
+# ADD LINK32 /nologo /dll /machine:I386 /out:"Win32_DLL_ASM_Release\zlib1.dll"
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "zlib___Win32_DLL_ASM_Debug"
+# PROP BASE Intermediate_Dir "zlib___Win32_DLL_ASM_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Win32_DLL_ASM_Debug"
+# PROP Intermediate_Dir "Win32_DLL_ASM_Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /D "ASMV" /D "ASMINF" /FD /GZ /c
+# SUBTRACT CPP /YX /Yc /Yu
+MTL=midl.exe
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
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+# ADD RSC /l 0x409 /d "_DEBUG"
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+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
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+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 /nologo /dll /debug /machine:I386 /out:"Win32_DLL_ASM_Debug\zlib1d.dll" /pdbtype:sept
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "zlib___Win32_LIB_Release"
+# PROP BASE Intermediate_Dir "zlib___Win32_LIB_Release"
+# PROP BASE Target_Dir ""
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+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_Release"
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+CPP=cl.exe
+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
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+# SUBTRACT CPP /YX /Yc /Yu
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+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "zlib___Win32_LIB_Debug"
+# PROP BASE Intermediate_Dir "zlib___Win32_LIB_Debug"
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+# PROP Use_Debug_Libraries 1
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+CPP=cl.exe
+# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
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+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT CPP /YX /Yc /Yu
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
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+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
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+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo /out:"Win32_LIB_Debug\zlibd.lib"
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "zlib___Win32_LIB_ASM_Release"
+# PROP BASE Intermediate_Dir "zlib___Win32_LIB_ASM_Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Win32_LIB_ASM_Release"
+# PROP Intermediate_Dir "Win32_LIB_ASM_Release"
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /D "ASMV" /D "ASMINF" /FD /c
+# SUBTRACT CPP /YX /Yc /Yu
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "zlib___Win32_LIB_ASM_Debug"
+# PROP BASE Intermediate_Dir "zlib___Win32_LIB_ASM_Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
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+# PROP Intermediate_Dir "Win32_LIB_ASM_Debug"
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
+# SUBTRACT BASE CPP /YX /Yc /Yu
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /D "ASMV" /D "ASMINF" /FD /GZ /c
+# SUBTRACT CPP /YX /Yc /Yu
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+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
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+# ADD BASE LIB32 /nologo
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+
+!ENDIF 
+
+# Begin Target
+
+# Name "zlib - Win32 DLL Release"
+# Name "zlib - Win32 DLL Debug"
+# Name "zlib - Win32 DLL ASM Release"
+# Name "zlib - Win32 DLL ASM Debug"
+# Name "zlib - Win32 LIB Release"
+# Name "zlib - Win32 LIB Debug"
+# Name "zlib - Win32 LIB ASM Release"
+# Name "zlib - Win32 LIB ASM Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=..\..\adler32.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\compress.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\crc32.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\deflate.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\gzio.c
+# End Source File
+# Begin Source File
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+SOURCE=..\..\infback.c
+# End Source File
+# Begin Source File
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+SOURCE=..\..\inffast.c
+# End Source File
+# Begin Source File
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+SOURCE=..\..\inflate.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inftrees.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\trees.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\uncompr.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\win32\zlib.def
+
+!IF  "$(CFG)" == "zlib - Win32 DLL Release"
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL Debug"
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Release"
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Debug"
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
+
+# PROP Exclude_From_Build 1
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\zutil.c
+# End Source File
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+# PROP Default_Filter "h;hpp;hxx;hm;inl"
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+SOURCE=..\..\crc32.h
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+SOURCE=..\..\inffast.h
+# End Source File
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+
+SOURCE=..\..\inffixed.h
+# End Source File
+# Begin Source File
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+SOURCE=..\..\inflate.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inftrees.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\trees.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\zconf.h
+# End Source File
+# Begin Source File
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+SOURCE=..\..\zlib.h
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+SOURCE=..\..\zutil.h
+# End Source File
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+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# Begin Source File
+
+SOURCE=..\..\win32\zlib1.rc
+# End Source File
+# End Group
+# Begin Group "Assembler Files (Unsupported)"
+
+# PROP Default_Filter "asm;obj;c;cpp;cxx;h;hpp;hxx"
+# Begin Source File
+
+SOURCE=..\..\contrib\masmx86\gvmat32.asm
+
+!IF  "$(CFG)" == "zlib - Win32 DLL Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL Debug"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Release"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_DLL_ASM_Release
+InputPath=..\..\contrib\masmx86\gvmat32.asm
+InputName=gvmat32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Debug"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_DLL_ASM_Debug
+InputPath=..\..\contrib\masmx86\gvmat32.asm
+InputName=gvmat32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Release"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_LIB_ASM_Release
+InputPath=..\..\contrib\masmx86\gvmat32.asm
+InputName=gvmat32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_LIB_ASM_Debug
+InputPath=..\..\contrib\masmx86\gvmat32.asm
+InputName=gvmat32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\contrib\masmx86\gvmat32c.c
+
+!IF  "$(CFG)" == "zlib - Win32 DLL Release"
+
+# PROP Exclude_From_Build 1
+# ADD CPP /I "..\.."
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL Debug"
+
+# PROP Exclude_From_Build 1
+# ADD CPP /I "..\.."
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Release"
+
+# ADD CPP /I "..\.."
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Debug"
+
+# ADD CPP /I "..\.."
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
+
+# PROP Exclude_From_Build 1
+# ADD CPP /I "..\.."
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
+
+# PROP Exclude_From_Build 1
+# ADD CPP /I "..\.."
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Release"
+
+# ADD CPP /I "..\.."
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
+
+# ADD CPP /I "..\.."
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\contrib\masmx86\inffas32.asm
+
+!IF  "$(CFG)" == "zlib - Win32 DLL Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL Debug"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Release"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_DLL_ASM_Release
+InputPath=..\..\contrib\masmx86\inffas32.asm
+InputName=inffas32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Debug"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_DLL_ASM_Debug
+InputPath=..\..\contrib\masmx86\inffas32.asm
+InputName=inffas32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
+
+# PROP Exclude_From_Build 1
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Release"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_LIB_ASM_Release
+InputPath=..\..\contrib\masmx86\inffas32.asm
+InputName=inffas32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
+
+# Begin Custom Build - Assembling...
+IntDir=.\Win32_LIB_ASM_Debug
+InputPath=..\..\contrib\masmx86\inffas32.asm
+InputName=inffas32
+
+"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+	ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
+
+# End Custom Build
+
+!ENDIF 
+
+# End Source File
+# End Group
+# Begin Source File
+
+SOURCE=.\README.txt
+# End Source File
+# End Target
+# End Project
--- a/projects/visualc6/zlib.dsw
+++ b/projects/visualc6/zlib.dsw
@@ -0,0 +1,59 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "example"=.\example.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+    Begin Project Dependency
+    Project_Dep_Name zlib
+    End Project Dependency
+}}}
+
+###############################################################################
+
+Project: "minigzip"=.\minigzip.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+    Begin Project Dependency
+    Project_Dep_Name zlib
+    End Project Dependency
+}}}
+
+###############################################################################
+
+Project: "zlib"=.\zlib.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+
--- a/qnx/package.qpg
+++ b/qnx/package.qpg
@@ -25,10 +25,10 @@
      <QPG:Files>
         <QPG:Add file="../zconf.h" install="/opt/include/" user="root:sys" permission="644"/>
         <QPG:Add file="../zlib.h" install="/opt/include/" user="root:sys" permission="644"/>
-         <QPG:Add file="../libz.so.1.2.1.1" install="/opt/lib/" user="root:bin" permission="644"/>
-         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.1.1"/>
-         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.1.1"/>
-         <QPG:Add file="../libz.so.1.2.1.1" install="/opt/lib/" component="slib"/>
+         <QPG:Add file="../libz.so.1.2.2" install="/opt/lib/" user="root:bin" permission="644"/>
+         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.2"/>
+         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.2"/>
+         <QPG:Add file="../libz.so.1.2.2" install="/opt/lib/" component="slib"/>
      </QPG:Files>

      <QPG:PackageFilter>
@@ -63,7 +63,7 @@
            </QPM:ProductDescription>

            <QPM:ReleaseDescription>
-               <QPM:ReleaseVersion>1.2.1.1</QPM:ReleaseVersion>
+               <QPM:ReleaseVersion>1.2.2</QPM:ReleaseVersion>
               <QPM:ReleaseUrgency>Medium</QPM:ReleaseUrgency>
               <QPM:ReleaseStability>Stable</QPM:ReleaseStability>
               <QPM:ReleaseNoteMinor></QPM:ReleaseNoteMinor>
--- a/trees.c
+++ b/trees.c
@@ -931,7 +931,7 @@ void _tr_flush_block(s, buf, stored_len, eof)
    if (s->level > 0) {

         /* Check if the file is ascii or binary */
-        if (s->data_type == Z_UNKNOWN) set_data_type(s);
+        if (s->strm->data_type == Z_UNKNOWN) set_data_type(s);

        /* Construct the literal and distance trees */
        build_tree(s, (tree_desc *)(&(s->l_desc)));
@@ -1131,7 +1131,7 @@ local void set_data_type(s)
    while (n < 7)        bin_freq += s->dyn_ltree[n++].Freq;
    while (n < 128)    ascii_freq += s->dyn_ltree[n++].Freq;
    while (n < LITERALS) bin_freq += s->dyn_ltree[n++].Freq;
-    s->data_type = (Byte)(bin_freq > (ascii_freq >> 2) ? Z_BINARY : Z_ASCII);
+    s->strm->data_type = bin_freq > (ascii_freq >> 2) ? Z_BINARY : Z_ASCII;
 }

 /* ===========================================================================
--- a/win32/DLL_FAQ.txt
+++ b/win32/DLL_FAQ.txt
@@ -12,7 +12,7 @@ in the zlib distribution, or at the following location:
 1. What is ZLIB1.DLL, and how can I get it?

  - ZLIB1.DLL is the official build of zlib as a DLL.
-    (Please remark the symbol '1' in the name.)
+    (Please remark the character '1' in the name.)

    Pointers to a precompiled ZLIB1.DLL can be found in the zlib
    web site at:
@@ -37,20 +37,19 @@ in the zlib distribution, or at the following location:
    and build settings.  If you do build the DLL yourself, please
    make sure that it complies with all the above requirements,
    and it runs with the precompiled test programs, bundled with
-    the original ZLIB1.DLL distribution and available at the zlib
-    web site.
+    the original ZLIB1.DLL distribution.

    If, for any reason, you need to build an incompatible DLL,
-    please use a different name.
+    please use a different file name.


 2. Why did you change the name of the DLL to ZLIB1.DLL?
    What happened to the old ZLIB.DLL?

-  - The old ZLIB.DLL, built from zlib-1.1.x and earlier, required
-    compilation settings that were incompatible to those used by a
-    static build.  The DLL settings were supposed to be enabled by
-    defining the macro ZLIB_DLL, before including "zlib.h".
+  - The old ZLIB.DLL, built from zlib-1.1.4 or earlier, required
+    compilation settings that were incompatible to those used by
+    a static build.  The DLL settings were supposed to be enabled
+    by defining the macro ZLIB_DLL, before including "zlib.h".
    Incorrect handling of this macro was silently accepted at
    build time, resulting in two major problems:

@@ -65,8 +64,8 @@ in the zlib distribution, or at the following location:
      functions.  Failure to do so resulted in creating binaries
      that were unable to run with the official ZLIB.DLL build.

-    The only possible solution that we could foresee was to make a
-    binary-incompatible change in the DLL interfacing, in order to
+    The only possible solution that we could foresee was to make
+    a binary-incompatible change in the DLL interface, in order to
    remove the dependency on the ZLIB_DLL macro, and to release
    the new DLL under a different name.

@@ -85,17 +84,13 @@ in the zlib distribution, or at the following location:

  - In principle, you can do it by assigning calling convention
    keywords to the macros ZEXPORT and ZEXPORTVA.  In practice,
-    it depends on what you mean by "an old ZLIB.DLL", because
-    the old DLL exists in several mutually-incompatible versions.
-
-    If you have a compiled application that works with a certain
-    ZLIB.DLL without any known security issues, there is hardly
-    a need to rebuild the DLL from new sources only to link it to
-    the old app binary.  But if you really want to do it, you have
-    to find out first what kind of calling convention uses your
-    particular ZLIB.DLL build, and to use the same one in the new
-    build.  If you don't know what this is all about, you might be
-    better off if you would just forget it.
+    it depends on what you mean by "an old ZLIB.DLL", because the
+    old DLL exists in several mutually-incompatible versions.
+    You have to find out first what kind of calling convention is
+    being used in your particular ZLIB.DLL build, and to use the
+    same one in the new build.  If you don't know what this is all
+    about, you might be better off if you would just leave the old
+    DLL intact.


 4. Can I compile my application using the new zlib interface, and
@@ -170,19 +165,19 @@ in the zlib distribution, or at the following location:
    the K&R-style function prototypes, where the argument types
    are not specified; but that is another story for another day.

-    The fact that remains is that CDECL is the default convention.
-    Even if an explicit convention (such as STDCALL or FASTCALL)
-    is hard-coded into the function prototypes inside C headers,
-    problems may appear.  One problem, for example, deals with the
-    necessity to expose the convention in users' callbacks.
+    The remaining fact is that CDECL is the default convention.
+    Even if an explicit convention is hard-coded into the function
+    prototypes inside C headers, problems may appear.  The
+    necessity to expose the convention in users' callbacks is one
+    of these problems.

    The calling convention issues are also important when using
    zlib in other programming languages.  Some of them, like Ada
    (GNAT) and Fortran (GNU G77), have C bindings implemented
    initially on Unix, and relying on the C calling convention.
-    On the other hand, the pre- .NET versions of Microsoft Visual
-    Basic require STDCALL, while Borland Delphi prefers (although
-    it does not require) FASTCALL.
+    On the other hand, the pre- .Net versions of Microsoft Visual
+    Basic require STDCALL, while Borland Delphi prefers, although
+    it does not require, FASTCALL.

    In fairness to all possible uses of zlib outside the C
    programming language, we choose the default "C" convention.
@@ -208,7 +203,14 @@ in the zlib distribution, or at the following location:
    zlib distribution.


- 8. If my application uses ZLIB1.DLL, should I link it to
+ 8. I need to use zlib in my Microsoft .Net project.  What can I
+    do?
+
+  - Henrik Ravn has contributed a .Net wrapper around zlib.  Look
+    into contrib/dotzlib/, inside the zlib distribution.
+
+
+ 9. If my application uses ZLIB1.DLL, should I link it to
    MSVCRT.DLL?  Why?

  - It is not required, but it is recommended to link your
@@ -223,7 +225,7 @@ in the zlib distribution, or at the following location:
    depend on it should also be linked to MSVCRT.DLL.


- 9. Why are you saying that ZLIB1.DLL and my application must be
+10. Why are you saying that ZLIB1.DLL and my application must be
    linked to the same C run-time (CRT) library?  I linked my
    application and my DLLs to different C libraries (e.g. my
    application to a static library, and my DLLs to MSVCRT.DLL),
@@ -255,11 +257,11 @@ in the zlib distribution, or at the following location:
    and DLLs are avoiding the corruption of each of the CRTs'
    internal states, maybe by careful design, or maybe by fortune.

-    Also note that linking ZLIB1.DLL to non-Microsoft CRTs (such
-    as those provided by Borland) raises similar problems.
+    Also note that linking ZLIB1.DLL to non-Microsoft CRTs, such
+    as those provided by Borland, raises similar problems.


-10. Why are you linking ZLIB1.DLL to MSVCRT.DLL?
+11. Why are you linking ZLIB1.DLL to MSVCRT.DLL?

  - MSVCRT.DLL exists on every Windows 95 with a new service pack
    installed, or with Microsoft Internet Explorer 4 or later, and
@@ -269,12 +271,11 @@ in the zlib distribution, or at the following location:
    software provider for free.

    The fact that MSVCRT.DLL does not exist on a virgin Windows 95
-    is not so problematic.  The number of Windows 95 installations
-    is rapidly decreasing, Microsoft stopped supporting it a long
-    time ago, and many recent applications from various vendors,
-    including Microsoft, do not even run on it.  Furthermore, no
-    serious user should run Windows 95 without a proper update
-    installed.
+    is not so problematic.  Windows 95 is scarcely found nowadays,
+    Microsoft ended its support a long time ago, and many recent
+    applications from various vendors, including Microsoft, do not
+    even run on it.  Furthermore, no serious user should run
+    Windows 95 without a proper update installed.

    There is also the fact that the mainstream C compilers for
    Windows are Microsoft Visual C++ 6.0, and gcc/MinGW.  Both
@@ -283,7 +284,7 @@ in the zlib distribution, or at the following location:
    select by users.


-11. Why are you not linking ZLIB1.DLL to
+12. Why are you not linking ZLIB1.DLL to
    <<my favorite C run-time library>> ?

  - We considered and abandoned the following alternatives:
@@ -314,7 +315,7 @@ in the zlib distribution, or at the following location:
      Windows NT systems.


-12. I need to link my own DLL build to a CRT different than
+13. I need to link my own DLL build to a CRT different than
    MSVCRT.DLL.  What can I do?

  - Feel free to rebuild the DLL from the zlib sources, and link
@@ -330,7 +331,7 @@ in the zlib distribution, or at the following location:
    CYGWIN1.DLL, and it is distributed under the name CYGZ.DLL.


-13. May I include additional pieces of code that I find useful,
+14. May I include additional pieces of code that I find useful,
    link them in ZLIB1.DLL, and export them?

  - No.  A legitimate build of ZLIB1.DLL must not include code
@@ -338,14 +339,12 @@ in the zlib distribution, or at the following location:
    But you can make your own private DLL build, under a different
    file name, as suggested in the previous answer.

-    For example, in Borland Delphi and C++ Builder, zlib is a part
-    of the standard VCL library.  If an application links to VCL
-    dynamically, the name of the distributable binary (VCLxx.DLL)
-    does not posess any danger of clashing with a legitimate but
-    incompatible ZLIB1.DLL.
+    For example, zlib is a part of the VCL library, distributed
+    with Borland Delphi and C++ Builder.  The DLL build of VCL
+    is a redistributable file, named VCLxx.DLL.


-14. May I remove some functionality out of ZLIB1.DLL, by enabling
+15. May I remove some functionality out of ZLIB1.DLL, by enabling
    macros like NO_GZCOMPRESS or NO_GZIP at compile time?

  - No.  A legitimate build of ZLIB1.DLL must provide the complete
@@ -354,7 +353,7 @@ in the zlib distribution, or at the following location:
    different file name, as suggested in the previous answer.


-15. I made my own ZLIB1.DLL build.  Can I test it for compliance?
+16. I made my own ZLIB1.DLL build.  Can I test it for compliance?

  - We prefer that you download the official DLL from the zlib
    web site.  If you need something peculiar from this DLL, you
--- a/win32/VisualC.txt
+++ b/win32/VisualC.txt
@@ -0,0 +1,3 @@
+
+To build zlib using the Microsoft Visual C++ environment,
+use the appropriate project from the projects/ directory.
--- a/win32/zlib1.rc
+++ b/win32/zlib1.rc
@@ -5,8 +5,8 @@ VS_VERSION_INFO		VERSIONINFO
 #else
 VS_VERSION_INFO		VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
 #endif
-  FILEVERSION		1,2,1,1
-  PRODUCTVERSION	1,2,1,1
+  FILEVERSION		1,2,2
+  PRODUCTVERSION	1,2,2
  FILEFLAGSMASK		VS_FFI_FILEFLAGSMASK
 #ifdef _DEBUG
  FILEFLAGS		1
@@ -23,12 +23,12 @@ BEGIN
    //language ID = U.S. English, char set = Windows, Multilingual
    BEGIN
      VALUE "FileDescription",	"zlib data compression library\0"
-      VALUE "FileVersion",	"1.2.1.1\0"
+      VALUE "FileVersion",	"1.2.2\0"
      VALUE "InternalName",	"zlib1.dll\0"
-      VALUE "LegalCopyright",	"(C) 1995-2003 Jean-loup Gailly & Mark Adler\0"
+      VALUE "LegalCopyright",	"(C) 1995-2004 Jean-loup Gailly & Mark Adler\0"
      VALUE "OriginalFilename",	"zlib1.dll\0"
      VALUE "ProductName",	"zlib\0"
-      VALUE "ProductVersion",	"1.2.1.1\0"
+      VALUE "ProductVersion",	"1.2.2\0"
      VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
    END
  END
--- a/zconf.h
+++ b/zconf.h
@@ -1,5 +1,5 @@
 /* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2003 Jean-loup Gailly.
+ * Copyright (C) 1995-2004 Jean-loup Gailly.
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

@@ -13,43 +13,46 @@
 * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
 */
 #ifdef Z_PREFIX
-#  define deflateInit_  z_deflateInit_
-#  define deflate       z_deflate
-#  define deflateEnd    z_deflateEnd
-#  define inflateInit_  z_inflateInit_
-#  define inflate       z_inflate
-#  define inflateEnd    z_inflateEnd
-#  define deflateInit2_ z_deflateInit2_
-#  define deflateSetDictionary z_deflateSetDictionary
-#  define deflateCopy   z_deflateCopy
-#  define deflateReset  z_deflateReset
-#  define deflatePrime  z_deflatePrime
-#  define deflateParams z_deflateParams
-#  define deflateBound  z_deflateBound
-#  define inflateInit2_ z_inflateInit2_
-#  define inflateSetDictionary z_inflateSetDictionary
-#  define inflateSync   z_inflateSync
-#  define inflateSyncPoint z_inflateSyncPoint
-#  define inflateCopy   z_inflateCopy
-#  define inflateReset  z_inflateReset
-#  define compress      z_compress
-#  define compress2     z_compress2
-#  define compressBound z_compressBound
-#  define uncompress    z_uncompress
-#  define adler32       z_adler32
-#  define crc32         z_crc32
-#  define get_crc_table z_get_crc_table
+#  define deflateInit_          z_deflateInit_
+#  define deflate               z_deflate
+#  define deflateEnd            z_deflateEnd
+#  define inflateInit_          z_inflateInit_
+#  define inflate               z_inflate
+#  define inflateEnd            z_inflateEnd
+#  define deflateInit2_         z_deflateInit2_
+#  define deflateSetDictionary  z_deflateSetDictionary
+#  define deflateCopy           z_deflateCopy
+#  define deflateReset          z_deflateReset
+#  define deflateParams         z_deflateParams
+#  define deflateBound          z_deflateBound
+#  define deflatePrime          z_deflatePrime
+#  define inflateInit2_         z_inflateInit2_
+#  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateSync           z_inflateSync
+#  define inflateSyncPoint      z_inflateSyncPoint
+#  define inflateCopy           z_inflateCopy
+#  define inflateReset          z_inflateReset
+#  define inflateBack           z_inflateBack
+#  define inflateBackEnd        z_inflateBackEnd
+#  define compress              z_compress
+#  define compress2             z_compress2
+#  define compressBound         z_compressBound
+#  define uncompress            z_uncompress
+#  define adler32               z_adler32
+#  define crc32                 z_crc32
+#  define get_crc_table         z_get_crc_table
+#  define zError                z_zError

-#  define Byte          z_Byte
-#  define uInt          z_uInt
-#  define uLong         z_uLong
-#  define Bytef         z_Bytef
-#  define charf         z_charf
-#  define intf          z_intf
-#  define uIntf         z_uIntf
-#  define uLongf        z_uLongf
-#  define voidpf        z_voidpf
-#  define voidp         z_voidp
+#  define Byte                  z_Byte
+#  define uInt                  z_uInt
+#  define uLong                 z_uLong
+#  define Bytef                 z_Bytef
+#  define charf                 z_charf
+#  define intf                  z_intf
+#  define uIntf                 z_uIntf
+#  define uLongf                z_uLongf
+#  define voidpf                z_voidpf
+#  define voidp                 z_voidp
 #endif

 #if defined(__MSDOS__) && !defined(MSDOS)
@@ -281,7 +284,7 @@ typedef uLong FAR uLongf;
 #  ifdef VMS
 #    include <unixio.h>   /* for off_t */
 #  endif
-#  define z_off_t  off_t
+#  define z_off_t off_t
 #endif
 #ifndef SEEK_SET
 #  define SEEK_SET        0       /* Seek from beginning of file.  */
@@ -289,11 +292,11 @@ typedef uLong FAR uLongf;
 #  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
 #endif
 #ifndef z_off_t
-#  define  z_off_t long
+#  define z_off_t long
 #endif

 #if defined(__OS400__)
-#define NO_vsnprintf
+#  define NO_vsnprintf
 #endif

 #if defined(__MVS__)
--- a/zconf.in.h
+++ b/zconf.in.h
@@ -1,5 +1,5 @@
 /* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2003 Jean-loup Gailly.
+ * Copyright (C) 1995-2004 Jean-loup Gailly.
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

@@ -13,43 +13,46 @@
 * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
 */
 #ifdef Z_PREFIX
-#  define deflateInit_  z_deflateInit_
-#  define deflate       z_deflate
-#  define deflateEnd    z_deflateEnd
-#  define inflateInit_  z_inflateInit_
-#  define inflate       z_inflate
-#  define inflateEnd    z_inflateEnd
-#  define deflateInit2_ z_deflateInit2_
-#  define deflateSetDictionary z_deflateSetDictionary
-#  define deflateCopy   z_deflateCopy
-#  define deflateReset  z_deflateReset
-#  define deflatePrime  z_deflatePrime
-#  define deflateParams z_deflateParams
-#  define deflateBound  z_deflateBound
-#  define inflateInit2_ z_inflateInit2_
-#  define inflateSetDictionary z_inflateSetDictionary
-#  define inflateSync   z_inflateSync
-#  define inflateSyncPoint z_inflateSyncPoint
-#  define inflateCopy   z_inflateCopy
-#  define inflateReset  z_inflateReset
-#  define compress      z_compress
-#  define compress2     z_compress2
-#  define compressBound z_compressBound
-#  define uncompress    z_uncompress
-#  define adler32       z_adler32
-#  define crc32         z_crc32
-#  define get_crc_table z_get_crc_table
+#  define deflateInit_          z_deflateInit_
+#  define deflate               z_deflate
+#  define deflateEnd            z_deflateEnd
+#  define inflateInit_          z_inflateInit_
+#  define inflate               z_inflate
+#  define inflateEnd            z_inflateEnd
+#  define deflateInit2_         z_deflateInit2_
+#  define deflateSetDictionary  z_deflateSetDictionary
+#  define deflateCopy           z_deflateCopy
+#  define deflateReset          z_deflateReset
+#  define deflateParams         z_deflateParams
+#  define deflateBound          z_deflateBound
+#  define deflatePrime          z_deflatePrime
+#  define inflateInit2_         z_inflateInit2_
+#  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateSync           z_inflateSync
+#  define inflateSyncPoint      z_inflateSyncPoint
+#  define inflateCopy           z_inflateCopy
+#  define inflateReset          z_inflateReset
+#  define inflateBack           z_inflateBack
+#  define inflateBackEnd        z_inflateBackEnd
+#  define compress              z_compress
+#  define compress2             z_compress2
+#  define compressBound         z_compressBound
+#  define uncompress            z_uncompress
+#  define adler32               z_adler32
+#  define crc32                 z_crc32
+#  define get_crc_table         z_get_crc_table
+#  define zError                z_zError

-#  define Byte          z_Byte
-#  define uInt          z_uInt
-#  define uLong         z_uLong
-#  define Bytef         z_Bytef
-#  define charf         z_charf
-#  define intf          z_intf
-#  define uIntf         z_uIntf
-#  define uLongf        z_uLongf
-#  define voidpf        z_voidpf
-#  define voidp         z_voidp
+#  define Byte                  z_Byte
+#  define uInt                  z_uInt
+#  define uLong                 z_uLong
+#  define Bytef                 z_Bytef
+#  define charf                 z_charf
+#  define intf                  z_intf
+#  define uIntf                 z_uIntf
+#  define uLongf                z_uLongf
+#  define voidpf                z_voidpf
+#  define voidp                 z_voidp
 #endif

 #if defined(__MSDOS__) && !defined(MSDOS)
@@ -281,7 +284,7 @@ typedef uLong FAR uLongf;
 #  ifdef VMS
 #    include <unixio.h>   /* for off_t */
 #  endif
-#  define z_off_t  off_t
+#  define z_off_t off_t
 #endif
 #ifndef SEEK_SET
 #  define SEEK_SET        0       /* Seek from beginning of file.  */
@@ -289,11 +292,11 @@ typedef uLong FAR uLongf;
 #  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
 #endif
 #ifndef z_off_t
-#  define  z_off_t long
+#  define z_off_t long
 #endif

 #if defined(__OS400__)
-#define NO_vsnprintf
+#  define NO_vsnprintf
 #endif

 #if defined(__MVS__)
--- a/zlib.3
+++ b/zlib.3
@@ -1,4 +1,4 @@
-.TH ZLIB 3 "9 January 2004"
+.TH ZLIB 3 "3 October 2004"
 .SH NAME
 zlib \- compression/decompression library
 .SH SYNOPSIS
@@ -133,7 +133,7 @@ before asking for help.
 Send questions and/or comments to zlib@gzip.org,
 or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
 .SH AUTHORS
-Version 1.2.1.1
+Version 1.2.2
 Copyright (C) 1995-2004 Jean-loup Gailly (jloup@gzip.org)
 and Mark Adler (madler@alumni.caltech.edu).
 .LP
--- a/zlib.h
+++ b/zlib.h
@@ -1,5 +1,5 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.1.1, January 9th, 2004
+  version 1.2.2, October 3rd, 2004

  Copyright (C) 1995-2004 Jean-loup Gailly and Mark Adler

@@ -37,8 +37,8 @@
 extern "C" {
 #endif

-#define ZLIB_VERSION "1.2.1.1"
-#define ZLIB_VERNUM 0x1211
+#define ZLIB_VERSION "1.2.2"
+#define ZLIB_VERNUM 0x1220

 /*
     The 'zlib' compression library provides in-memory compression and
@@ -53,24 +53,22 @@ extern "C" {
  application must provide more input and/or consume the output
  (providing more output space) before each call.

-     The compressed data format used by the in-memory functions is the zlib
-  format, which is a zlib wrapper documented in RFC 1950, wrapped around a
-  deflate stream, which is itself documented in RFC 1951.
+     The compressed data format used by default by the in-memory functions is
+  the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
+  around a deflate stream, which is itself documented in RFC 1951.

     The library also supports reading and writing files in gzip (.gz) format
  with an interface similar to that of stdio using the functions that start
  with "gz".  The gzip format is different from the zlib format.  gzip is a
  gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.

+     This library can optionally read and write gzip streams in memory as well.
+
     The zlib format was designed to be compact and fast for use in memory
  and on communications channels.  The gzip format was designed for single-
  file compression on file systems, has a larger header than zlib to maintain
  directory information, and uses a different, slower check method than zlib.

-     This library does not provide any functions to write gzip files in memory.
-  However such functions could be easily written using zlib's deflate function,
-  the documentation in the gzip RFC, and the examples in gzio.c.
-
     The library does not install any signal handler. The decoder checks
  the consistency of the compressed data, so the library should never
  crash even in case of corrupted input.
@@ -401,7 +399,7 @@ ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
  because Z_BLOCK is used.

     If a preset dictionary is needed after this call (see inflateSetDictionary
-  below), inflate sets strm-adler to the adler32 checksum of the dictionary
+  below), inflate sets strm->adler to the adler32 checksum of the dictionary
  chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
  strm->adler to the adler32 checksum of all output produced so far (that is,
  total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
@@ -478,7 +476,8 @@ ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
   16 to windowBits to write a simple gzip header and trailer around the
   compressed data instead of a zlib wrapper. The gzip header will have no
   file name, no extra data, no comment, no modification time (set to zero),
-   no header crc, and the operating system will be set to 255 (unknown).
+   no header crc, and the operating system will be set to 255 (unknown).  If a
+   gzip stream is being written, strm->adler is a crc32 instead of an adler32.

     The memLevel parameter specifies how much memory should be allocated
   for the internal compression state. memLevel=1 uses minimum memory but
@@ -649,7 +648,8 @@ ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
     windowBits can also be greater than 15 for optional gzip decoding. Add
   32 to windowBits to enable zlib and gzip decoding with automatic header
   detection, or add 16 to decode only the gzip format (the zlib format will
-   return a Z_DATA_ERROR).
+   return a Z_DATA_ERROR.  If a gzip stream is being decoded, strm->adler is
+   a crc32 instead of an adler32.

     inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_STREAM_ERROR if a parameter is invalid (such as a negative
@@ -1189,7 +1189,7 @@ ZEXTERN int ZEXPORT inflateBackInit_ OF((z_stream FAR *strm, int windowBits,
    struct internal_state {int dummy;}; /* hack for buggy compilers */
 #endif

-ZEXTERN const char   * ZEXPORT zError           OF((int err));
+ZEXTERN const char   * ZEXPORT zError           OF((int));
 ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp z));
 ZEXTERN const uLongf * ZEXPORT get_crc_table    OF((void));

--- a/zutil.h
+++ b/zutil.h
@@ -189,9 +189,14 @@ extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 #    define NO_vsnprintf
 #  endif
 #endif
+#ifdef VMS
+#  define NO_vsnprintf
+#endif

 #ifdef HAVE_STRERROR
-   extern char *strerror OF((int));
+#  ifndef VMS
+     extern char *strerror OF((int));
+#  endif
 #  define zstrerror(errnum) strerror(errnum)
 #else
 #  define zstrerror(errnum) ""
Author	SHA1	Message	Date
Mark Adler	79fbcdc939	zlib 1.2.2	2011-09-09 23:24:02 -07:00
Mark Adler	7a6955760b	zlib 1.2.1.2	2011-09-09 23:23:45 -07:00