zlib 1.2.5.3

Make sure that no extra inserting is done if the strategy changes.
Insert the first two strings in the hash table after a flush.
2012-01-15 18:58:21 -08:00 · 2012-01-14 10:53:23 -08:00 · 2012-01-13 23:54:40 -06:00 · 2012-01-07 14:08:02 -08:00 · 2012-01-07 14:03:07 -08:00 · 2012-01-07 14:03:07 -08:00
34 changed files with 233 additions and 1436 deletions
--- a/15
+++ b/15
@@ -1,6 +1,21 @@

                ChangeLog file for zlib

+Changes in 1.2.5.3 (15 Jan 2012)
+- Restore gzgetc function for binary compatibility
+- Do not use _lseeki64 under Borland C++ [Truta]
+- Update win32/Makefile.msc to build test/*.c [Truta]
+- Remove old/visualc6 given CMakefile and other alternatives
+- Update AS400 build files and documentation [Monnerat]
+- Update win32/Makefile.gcc to build test/*.c [Truta]
+- Permit stronger flushes after Z_BLOCK flushes
+- Avoid extraneous empty blocks when doing empty flushes
+- Permit Z_NULL arguments to deflatePending
+- Allow deflatePrime() to insert bits in the middle of a stream
+- Remove second empty static block for Z_PARTIAL_FLUSH
+- Write out all of the available bits when using Z_BLOCK
+- Insert the first two strings in the hash table after a flush
+
 Changes in 1.2.5.2 (17 Dec 2011)
 - fix ld error: unable to find version dependency 'ZLIB_1.2.5'
 - use relative symlinks for shared libs
--- a/Makefile.in
+++ b/Makefile.in
@@ -32,7 +32,7 @@ CPP=$(CC) -E

 STATICLIB=libz.a
 SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.5.2
+SHAREDLIBV=libz.so.1.2.5.3
 SHAREDLIBM=libz.so.1
 LIBS=$(STATICLIB) $(SHAREDLIBV)

--- a/4
+++ b/4
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY

-zlib 1.2.5.2 is a general purpose data compression library.  All the code is
+zlib 1.2.5.3 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://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
@@ -31,7 +31,7 @@ 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 at
 http://marknelson.us/1997/01/01/zlib-engine/ .

-The changes made in version 1.2.5.2 are documented in the file ChangeLog.
+The changes made in version 1.2.5.3 are documented in the file ChangeLog.

 Unsupported third party contributions are provided in directory contrib/ .

--- a/as400/bndsrc
+++ b/as400/bndsrc
@@ -33,9 +33,7 @@ STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
  EXPORT SYMBOL("deflateSetDictionary")
  EXPORT SYMBOL("deflateCopy")
  EXPORT SYMBOL("deflateReset")
-  EXPORT SYMBOL("deflateResetKeep")
  EXPORT SYMBOL("deflateParams")
-  EXPORT SYMBOL("deflatePending")
  EXPORT SYMBOL("deflatePrime")
  EXPORT SYMBOL("deflateInit_")
  EXPORT SYMBOL("deflateInit2_")
@@ -53,6 +51,7 @@ STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
  EXPORT SYMBOL("gzputs")
  EXPORT SYMBOL("gzgets")
  EXPORT SYMBOL("gzputc")
+  EXPORT SYMBOL("gzgetc")
  EXPORT SYMBOL("gzflush")
  EXPORT SYMBOL("gzseek")
  EXPORT SYMBOL("gzrewind")
@@ -170,8 +169,6 @@ STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
 /********************************************************************/

  EXPORT SYMBOL("gzclose_w")
-  EXPORT SYMBOL("gzgetc_")
-  EXPORT SYMBOL("gzflags")

 /********************************************************************/
 /*   *MODULE      INFLATE      ZLIB         01/02/01  00:15:09      */
@@ -181,6 +178,29 @@ STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
  EXPORT SYMBOL("inflatePrime")
  EXPORT SYMBOL("inflateReset2")
  EXPORT SYMBOL("inflateUndermine")
+
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+/*   Version 1.2.6 additional entry points.                         */
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+
+/********************************************************************/
+/*   *MODULE      DEFLATE      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("deflateResetKeep")
+  EXPORT SYMBOL("deflatePending")
+
+/********************************************************************/
+/*   *MODULE      GZWRITE      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
+  EXPORT SYMBOL("gzgetc_")
+  EXPORT SYMBOL("gzflags")
+
+/********************************************************************/
+/*   *MODULE      INFLATE      ZLIB         01/02/01  00:15:09      */
+/********************************************************************/
+
  EXPORT SYMBOL("inflateResetKeep")

 ENDPGMEXP
--- a/as400/compile.clp
+++ b/as400/compile.clp
@@ -105,6 +105,6 @@
                                 &MODLIB/TREES       &MODLIB/UNCOMPR     +
                                 &MODLIB/ZUTIL)                          +
                          SRCFILE(&SRCLIB/&CTLFILE) SRCMBR(BNDSRC)       +
-                          TEXT('ZLIB 1.2.5.2') TGTRLS(&TGTRLS)
+                          TEXT('ZLIB 1.2.5.3') TGTRLS(&TGTRLS)

             ENDPGM
--- a/as400/readme.txt
+++ b/as400/readme.txt
@@ -1,4 +1,4 @@
-        ZLIB version 1.2.5.2 for AS400 installation instructions
+        ZLIB version 1.2.5.3 for AS400 installation instructions

 I) From an AS400 *SAVF file:

@@ -8,7 +8,7 @@ On the AS400:

 _       Create the ZLIB AS400 library:

-        CRTLIB LIB(ZLIB) TYPE(PROD) TEXT('ZLIB compression API library')
+        CRTLIB LIB(ZLIB) TYPE(*PROD) TEXT('ZLIB compression API library')

 _       Create a work save file, for example:

@@ -52,7 +52,7 @@ II) From the original source distribution:

 1)      On the AS400, create the source library:

-        CRTLIB LIB(ZLIB) TYPE(PROD) TEXT('ZLIB compression API library')
+        CRTLIB LIB(ZLIB) TYPE(*PROD) TEXT('ZLIB compression API library')

 2)      Create the source files:

--- 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 1.2.5.2
+      *  Version 1.2.5.3
      *
      *
      *  WARNING:
@@ -22,14 +22,14 @@
      *
      *  Versioning information.
      *
-     D ZLIB_VERSION    C                   '1.2.5.2'
-     D ZLIB_VERNUM     C                   X'1252'
+     D ZLIB_VERSION    C                   '1.2.5.3'
+     D ZLIB_VERNUM     C                   X'1253'
     D ZLIB_VER_MAJOR  C                   1
     D ZLIB_VER_MINOR  C                   2
     D ZLIB_VER_REVISION...
     D                 C                   5
     D ZLIB_VER_SUBREVISION...
-     D                 C                   0
+     D                 C                   3
      *
      *  Other equates.
      *
@@ -111,15 +111,15 @@
      **************************************************************************
      *
     D compress        PR            10I 0 extproc('compress')
-     D  dest                      32767    options(*varsize)                    Destination buffer
+     D  dest                      65535    options(*varsize)                    Destination buffer
     D  destLen                      10U 0                                      Destination length
-     D  source                    32767    const options(*varsize)              Source buffer
+     D  source                    65535    const options(*varsize)              Source buffer
     D  sourceLen                    10u 0 value                                Source length
      *
     D compress2       PR            10I 0 extproc('compress2')
-     D  dest                      32767    options(*varsize)                    Destination buffer
+     D  dest                      65535    options(*varsize)                    Destination buffer
     D  destLen                      10U 0                                      Destination length
-     D  source                    32767    const options(*varsize)              Source buffer
+     D  source                    65535    const options(*varsize)              Source buffer
     D  sourceLen                    10U 0 value                                Source length
     D  level                        10I 0 value                                Compression level
      *
@@ -127,9 +127,9 @@
     D  sourceLen                    10U 0 value
      *
     D uncompress      PR            10I 0 extproc('uncompress')
-     D  dest                      32767    options(*varsize)                    Destination buffer
+     D  dest                      65535    options(*varsize)                    Destination buffer
     D  destLen                      10U 0                                      Destination length
-     D  source                    32767    const options(*varsize)              Source buffer
+     D  source                    65535    const options(*varsize)              Source buffer
     D  sourceLen                    10U 0 value                                Source length
      *
      /if not defined(LARGE_FILES)
@@ -165,12 +165,12 @@
      *
     D gzread          PR            10I 0 extproc('gzread')
     D  file                               value like(gzFile)                   File pointer
-     D  buf                       32767    options(*varsize)                    Buffer
+     D  buf                       65535    options(*varsize)                    Buffer
     D  len                          10u 0 value                                Buffer length
      *
     D gzwrite         PR            10I 0 extproc('gzwrite')
     D  file                               value like(gzFile)                   File pointer
-     D  buf                       32767    const options(*varsize)              Buffer
+     D  buf                       65535    const options(*varsize)              Buffer
     D  len                          10u 0 value                                Buffer length
      *
     D gzputs          PR            10I 0 extproc('gzputs')
@@ -179,13 +179,16 @@
      *
     D gzgets          PR              *   extproc('gzgets')
     D  file                               value like(gzFile)                   File pointer
-     D  buf                       32767    options(*varsize)                    Read buffer
+     D  buf                       65535    options(*varsize)                    Read buffer
     D  len                          10i 0 value                                Buffer length
      *
     D gzputc          PR            10i 0 extproc('gzputc')
     D  file                               value like(gzFile)                   File pointer
     D  c                            10I 0 value                                Character to write
      *
+     D gzgetc          PR            10i 0 extproc('gzgetc')
+     D  file                               value like(gzFile)                   File pointer
+      *
     D gzgetc_         PR            10i 0 extproc('gzgetc_')
     D  file                               value like(gzFile)                   File pointer
      *
@@ -315,7 +318,7 @@
     D deflateSetDictionary...
     D                 PR            10I 0 extproc('deflateSetDictionary')      Init. dictionary
     D  strm                               like(z_stream)                       Compression stream
-     D  dictionary                32767    const options(*varsize)              Dictionary bytes
+     D  dictionary                65535    const options(*varsize)              Dictionary bytes
     D  dictLength                   10U 0 value                                Dictionary length
      *
     D deflateCopy     PR            10I 0 extproc('deflateCopy')               Compress strm 2 strm
@@ -341,7 +344,7 @@
      *
     D deflatePrime    PR            10I 0 extproc('deflatePrime')              Change level & strat
     D  strm                               like(z_stream)                       Compression stream
-     D  bits                         10I 0 value                                Number of bits to insert
+     D  bits                         10I 0 value                                # of bits to insert
     D  value                        10I 0 value                                Bits to insert
      *
     D inflateInit2    PR            10I 0 extproc('inflateInit2_')             Init. expansion
@@ -353,7 +356,7 @@
     D inflateSetDictionary...
     D                 PR            10I 0 extproc('inflateSetDictionary')      Init. dictionary
     D  strm                               like(z_stream)                       Expansion stream
-     D  dictionary                32767    const options(*varsize)              Dictionary bytes
+     D  dictionary                65535    const options(*varsize)              Dictionary bytes
     D  dictLength                   10U 0 value                                Dictionary length
      *
     D inflateSync     PR            10I 0 extproc('inflateSync')               Sync. expansion
@@ -382,7 +385,7 @@
     D                 PR            10I 0 extproc('inflateBackInit_')
     D  strm                               like(z_stream)                       Expansion stream
     D  windowBits                   10I 0 value                                Log2(buffer size)
-     D  window                    32767    options(*varsize)                    Buffer
+     D  window                    65535    options(*varsize)                    Buffer
     D  version                        *   value options(*string)               Version string
     D  stream_size                  10i 0 value                                Stream struct. size
      *
@@ -405,12 +408,12 @@
      *
     D adler32         PR            10U 0 extproc('adler32')                   New checksum
     D  adler                        10U 0 value                                Old checksum
-     D  buf                       32767    const options(*varsize)              Bytes to accumulate
+     D  buf                       65535    const options(*varsize)              Bytes to accumulate
     D  len                          10U 0 value                                Buffer length
      *
     D crc32           PR            10U 0 extproc('crc32')                     New checksum
     D  crc                          10U 0 value                                Old checksum
-     D  buf                       32767    const options(*varsize)              Bytes to accumulate
+     D  buf                       65535    const options(*varsize)              Bytes to accumulate
     D  len                          10U 0 value                                Buffer length
      *
      **************************************************************************
--- 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 = '1.2.5.2';
+  zlib_version = '1.2.5.3';

 type
  EZlibError = class(Exception);
--- a/contrib/dotzlib/DotZLib/UnitTests.cs
+++ b/contrib/dotzlib/DotZLib/UnitTests.cs
@@ -156,7 +156,7 @@ namespace DotZLibTests
        public void Info_Version()
        {
            Info info = new Info();
-            Assert.AreEqual("1.2.5.2", Info.Version);
+            Assert.AreEqual("1.2.5.3", Info.Version);
            Assert.AreEqual(32, info.SizeOfUInt);
            Assert.AreEqual(32, info.SizeOfULong);
            Assert.AreEqual(32, info.SizeOfPointer);
--- a/contrib/infback9/inftree9.c
+++ b/contrib/infback9/inftree9.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15

 const char inflate9_copyright[] =
-   " inflate9 1.2.5.2 Copyright 1995-2011 Mark Adler ";
+   " inflate9 1.2.5.3 Copyright 1995-2011 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, 194};
+        133, 133, 133, 133, 144, 71, 64};
    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/pascal/zlibpas.pas
+++ b/contrib/pascal/zlibpas.pas
@@ -10,7 +10,7 @@ unit zlibpas;
 interface

 const
-  ZLIB_VERSION = '1.2.5.2';
+  ZLIB_VERSION = '1.2.5.3';

 type
  alloc_func = function(opaque: Pointer; items, size: Integer): Pointer;
--- a/contrib/vstudio/vc10/zlib.rc
+++ b/contrib/vstudio/vc10/zlib.rc
@@ -2,8 +2,8 @@

 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1.2.5.2,1
-  PRODUCTVERSION 1.2.5.2,1
+  FILEVERSION	 1.2.5.3,1
+  PRODUCTVERSION 1.2.5.3,1
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN

    BEGIN
      VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.5.2\0"
+      VALUE "FileVersion",	"1.2.5.3\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlib.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
--- a/contrib/vstudio/vc10/zlibvc.def
+++ b/contrib/vstudio/vc10/zlibvc.def
@@ -33,6 +33,7 @@ EXPORTS
        zlibVersion                              @27
        gzprintf                                 @28
        gzputc                                   @29
+        gzgetc                                   @30
        gzseek                                   @31
        gzrewind                                 @32
        gztell                                   @33
--- a/contrib/vstudio/vc9/zlib.rc
+++ b/contrib/vstudio/vc9/zlib.rc
@@ -2,8 +2,8 @@

 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1.2.5.2,1
-  PRODUCTVERSION 1.2.5.2,1
+  FILEVERSION	 1.2.5.3,1
+  PRODUCTVERSION 1.2.5.3,1
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN

    BEGIN
      VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.5.2\0"
+      VALUE "FileVersion",	"1.2.5.3\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlib.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
--- a/contrib/vstudio/vc9/zlibvc.def
+++ b/contrib/vstudio/vc9/zlibvc.def
@@ -33,6 +33,7 @@ EXPORTS
        zlibVersion                              @27
        gzprintf                                 @28
        gzputc                                   @29
+        gzgetc                                   @30
        gzseek                                   @31
        gzrewind                                 @32
        gztell                                   @33
--- a/deflate.c
+++ b/deflate.c
@@ -1,5 +1,5 @@
 /* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2011 Jean-loup Gailly and Mark Adler
+ * Copyright (C) 1995-2012 Jean-loup Gailly and Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

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

 const char deflate_copyright[] =
-   " deflate 1.2.5.2 Copyright 1995-2011 Jean-loup Gailly and Mark Adler ";
+   " deflate 1.2.5.3 Copyright 1995-2012 Jean-loup Gailly and 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
@@ -155,6 +155,9 @@ local const config configuration_table[10] = {
 struct static_tree_desc_s {int dummy;}; /* for buggy compilers */
 #endif

+/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */
+#define RANK(f) (((f) << 1) - ((f) > 4 ? 9 : 0))
+
 /* ===========================================================================
 * Update a hash value with the given input byte
 * IN  assertion: all calls to to UPDATE_HASH are made with consecutive
@@ -346,6 +349,7 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
            CLEAR_HASH(s);
            s->strstart = 0;
            s->block_start = 0L;
+            s->insert = 0;
        }
        dictionary += dictLength - s->w_size;  /* use the tail */
        dictLength = s->w_size;
@@ -374,6 +378,7 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
    }
    s->strstart += s->lookahead;
    s->block_start = (long)s->strstart;
+    s->insert = s->lookahead;
    s->lookahead = 0;
    s->match_length = s->prev_length = MIN_MATCH-1;
    s->match_available = 0;
@@ -448,7 +453,9 @@ int ZEXPORT deflatePending (strm, pending, bits)
    z_streamp strm;
 {
    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    if (pending != Z_NULL)
        *pending = strm->state->pending;
+    if (bits != Z_NULL)
        *bits = strm->state->bi_valid;
    return Z_OK;
 }
@@ -459,9 +466,23 @@ int ZEXPORT deflatePrime (strm, bits, value)
    int bits;
    int value;
 {
+    deflate_state *s;
+    int put;
+
    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
-    strm->state->bi_valid = bits;
-    strm->state->bi_buf = (ush)(value & ((1 << bits) - 1));
+    s = strm->state;
+    if ((Bytef *)(s->d_buf) < s->pending_out + ((Buf_size + 7) >> 3))
+        return Z_BUF_ERROR;
+    do {
+        put = Buf_size - s->bi_valid;
+        if (put > bits)
+            put = bits;
+        s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid);
+        s->bi_valid += put;
+        _tr_flush_bits(s);
+        value >>= put;
+        bits -= put;
+    } while (bits);
    return Z_OK;
 }

@@ -619,19 +640,22 @@ local void putShortMSB (s, b)
 local void flush_pending(strm)
    z_streamp strm;
 {
-    unsigned len = strm->state->pending;
+    unsigned len;
+    deflate_state *s = strm->state;

+    _tr_flush_bits(s);
+    len = s->pending;
    if (len > strm->avail_out) len = strm->avail_out;
    if (len == 0) return;

-    zmemcpy(strm->next_out, strm->state->pending_out, len);
+    zmemcpy(strm->next_out, s->pending_out, len);
    strm->next_out  += len;
-    strm->state->pending_out  += len;
+    s->pending_out  += len;
    strm->total_out += len;
    strm->avail_out  -= len;
-    strm->state->pending -= len;
-    if (strm->state->pending == 0) {
-        strm->state->pending_out = strm->state->pending_buf;
+    s->pending -= len;
+    if (s->pending == 0) {
+        s->pending_out = s->pending_buf;
    }
 }

@@ -858,7 +882,7 @@ int ZEXPORT deflate (strm, flush)
     * flushes. For repeated and useless calls with Z_FINISH, we keep
     * returning Z_STREAM_END instead of Z_BUF_ERROR.
     */
-    } else if (strm->avail_in == 0 && flush <= old_flush &&
+    } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&
               flush != Z_FINISH) {
        ERR_RETURN(strm, Z_BUF_ERROR);
    }
@@ -907,6 +931,7 @@ int ZEXPORT deflate (strm, flush)
                    if (s->lookahead == 0) {
                        s->strstart = 0;
                        s->block_start = 0L;
+                        s->insert = 0;
                    }
                }
            }
@@ -1093,6 +1118,7 @@ local void lm_init (s)
    s->strstart = 0;
    s->block_start = 0L;
    s->lookahead = 0;
+    s->insert = 0;
    s->match_length = s->prev_length = MIN_MATCH-1;
    s->match_available = 0;
    s->ins_h = 0;
@@ -1440,12 +1466,24 @@ local void fill_window(s)
        s->lookahead += n;

        /* Initialize the hash value now that we have some input: */
-        if (s->lookahead >= MIN_MATCH) {
-            s->ins_h = s->window[s->strstart];
-            UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+        if (s->lookahead + s->insert >= MIN_MATCH) {
+            uInt str = s->strstart - s->insert;
+            s->ins_h = s->window[str];
+            UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
 #if MIN_MATCH != 3
            Call UPDATE_HASH() MIN_MATCH-3 more times
 #endif
+            while (s->insert) {
+                UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
+#ifndef FASTEST
+                s->prev[str & s->w_mask] = s->head[s->ins_h];
+#endif
+                s->head[s->ins_h] = (Pos)str;
+                str++;
+                s->insert--;
+                if (s->lookahead + s->insert < MIN_MATCH)
+                    break;
+            }
        }
        /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
         * but this is not important since only literal bytes will be emitted.
@@ -1568,8 +1606,14 @@ local block_state deflate_stored(s, flush)
            FLUSH_BLOCK(s, 0);
        }
    }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if ((long)s->strstart > s->block_start)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }

 /* ===========================================================================
@@ -1665,8 +1709,14 @@ local block_state deflate_fast(s, flush)
        }
        if (bflush) FLUSH_BLOCK(s, 0);
    }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }

 #ifndef FASTEST
@@ -1790,8 +1840,14 @@ local block_state deflate_slow(s, flush)
        _tr_tally_lit(s, s->window[s->strstart-1], bflush);
        s->match_available = 0;
    }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }
 #endif /* FASTEST */

@@ -1859,8 +1915,14 @@ local block_state deflate_rle(s, flush)
        }
        if (bflush) FLUSH_BLOCK(s, 0);
    }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }

 /* ===========================================================================
@@ -1892,6 +1954,12 @@ local block_state deflate_huff(s, flush)
        s->strstart++;
        if (bflush) FLUSH_BLOCK(s, 0);
    }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }
--- a/deflate.h
+++ b/deflate.h
@@ -1,5 +1,5 @@
 /* deflate.h -- internal compression state
- * Copyright (C) 1995-2010 Jean-loup Gailly
+ * Copyright (C) 1995-2012 Jean-loup Gailly
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

@@ -48,6 +48,9 @@
 #define MAX_BITS 15
 /* All codes must not exceed MAX_BITS bits */

+#define Buf_size 16
+/* size of bit buffer in bi_buf */
+
 #define INIT_STATE    42
 #define EXTRA_STATE   69
 #define NAME_STATE    73
@@ -244,7 +247,7 @@ typedef struct internal_state {
    ulg opt_len;        /* bit length of current block with optimal trees */
    ulg static_len;     /* bit length of current block with static trees */
    uInt matches;       /* number of string matches in current block */
-    int last_eob_len;   /* bit length of EOB code for last block */
+    uInt insert;        /* bytes at end of window left to insert */

 #ifdef DEBUG
    ulg compressed_len; /* total bit length of compressed file mod 2^32 */
@@ -294,6 +297,7 @@ void ZLIB_INTERNAL _tr_init OF((deflate_state *s));
 int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
 void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
                        ulg stored_len, int last));
+void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s));
 void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
 void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
                        ulg stored_len, int last));
--- a/gzlib.c
+++ b/gzlib.c
@@ -5,7 +5,7 @@

 #include "gzguts.h"

-#if defined(_WIN32)
+#if defined(_WIN32) && !defined(__BORLANDC__)
 #  define LSEEK _lseeki64
 #else
 #if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
--- a/gzread.c
+++ b/gzread.c
@@ -390,10 +390,7 @@ int ZEXPORT gzgetc_(file)
        (state->err != Z_OK && state->err != Z_BUF_ERROR))
        return -1;

-    /* try output buffer (no need to check for skip request) -- while
-       this check really isn't required since the gzgetc() macro has
-       already determined that x.have is zero, we leave it in for
-       completeness. */
+    /* try output buffer (no need to check for skip request) */
    if (state->x.have) {
        state->x.have--;
        state->x.pos++;
@@ -405,6 +402,13 @@ int ZEXPORT gzgetc_(file)
    return ret < 1 ? -1 : buf[0];
 }

+#undef gzgetc
+int ZEXPORT gzgetc(file)
+gzFile file;
+{
+    return gzgetc_(file);
+}    
+
 /* -- see zlib.h -- */
 int ZEXPORT gzungetc(c, file)
    int c;
--- a/inftrees.c
+++ b/inftrees.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15

 const char inflate_copyright[] =
-   " inflate 1.2.5.2 Copyright 1995-2011 Mark Adler ";
+   " inflate 1.2.5.3 Copyright 1995-2011 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, 194};
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 71, 64};
    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,
--- a/old/visualc6/README.txt
+++ b/old/visualc6/README.txt
@@ -1,73 +0,0 @@
-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.
-
-
-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.
-
-
-To build and test:
-
-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)".
-
-
-To use:
-
-1) Select "Project | Settings (Alt+F7)".
-   Make note of the configuration names used in your project.
-   Usually, these names are "Win32 Release" and "Win32 Debug".
-
-2) In the Workspace window, select the "FileView" tab.
-   Right-click on the root item "Workspace '...'".
-   Select "Insert Project into Workspace".
-   Switch on the checkbox "Dependency of:", and select the name
-   of your project.  Open "zlib.dsp".
-
-3) Select "Build | Configurations".
-   For each configuration of your project:
-   3.1) Choose the zlib configuration you wish to use.
-   3.2) Click on "Add".
-   3.3) Set the new zlib configuration name to the name used by
-        the configuration from the current iteration.
-
-4) Select "Build | Set Active Configuration".
-   Choose the configuration you wish to build.
-
-5) Select "Build | Build ... (F7)".
-
-6) If you built an executable program, select
-   "Build | Execute ... (Ctrl+F5)".
-
-
-Note:
-
-To build the ASM-enabled code, you need Microsoft Assembler
-(ML.EXE).  You can get it by downloading and installing the
-latest Processor Pack for Visual C++ 6.0.
--- a/old/visualc6/example.dsp
+++ b/old/visualc6/example.dsp
@@ -1,278 +0,0 @@
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-# ** DO NOT EDIT **
-
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-
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--- a/old/visualc6/minigzip.dsp
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@@ -1,278 +0,0 @@
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-# 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 "_CRT_SECURE_NO_DEPRECATE" /D "_CRT_NONSTDC_NO_DEPRECATE" /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  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 1
-# PROP BASE Output_Dir "zlib___Win32_LIB_ASM_Debug"
-# PROP BASE Intermediate_Dir "zlib___Win32_LIB_ASM_Debug"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 1
-# PROP Output_Dir "Win32_LIB_ASM_Debug"
-# PROP Intermediate_Dir "Win32_LIB_ASM_Debug"
-# PROP Target_Dir ""
-CPP=cl.exe
-# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
-# SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_CRT_SECURE_NO_DEPRECATE" /D "_CRT_NONSTDC_NO_DEPRECATE" /D "_DEBUG" /D "ASMV" /D "ASMINF" /FR /FD /GZ /c
-# SUBTRACT CPP /YX /Yc /Yu
-RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /d "_DEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LIB32=link.exe -lib
-# ADD BASE LIB32 /nologo
-# ADD LIB32 /nologo /out:"Win32_LIB_ASM_Debug\zlibd.lib"
-
-!ELSEIF  "$(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 ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 0
-# PROP Output_Dir "Win32_LIB_Release"
-# PROP Intermediate_Dir "Win32_LIB_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 "_CRT_SECURE_NO_DEPRECATE" /D "_CRT_NONSTDC_NO_DEPRECATE" /D "NDEBUG" /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 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"
-# 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 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 "_CRT_SECURE_NO_DEPRECATE" /D "_CRT_NONSTDC_NO_DEPRECATE" /D "_DEBUG" /FR /FD /GZ /c
-# SUBTRACT CPP /YX /Yc /Yu
-RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /d "_DEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LIB32=link.exe -lib
-# ADD BASE LIB32 /nologo
-# ADD LIB32 /nologo /out:"Win32_LIB_Debug\zlibd.lib"
-
-!ENDIF
-
-# Begin Target
-
-# Name "zlib - Win32 DLL ASM Release"
-# Name "zlib - Win32 DLL ASM Debug"
-# Name "zlib - Win32 DLL Release"
-# Name "zlib - Win32 DLL Debug"
-# Name "zlib - Win32 LIB ASM Release"
-# Name "zlib - Win32 LIB ASM Debug"
-# Name "zlib - Win32 LIB Release"
-# Name "zlib - Win32 LIB 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=..\..\gzclose.c
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\gzlib.c
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\gzread.c
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\gzwrite.c
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\infback.c
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\inffast.c
-# End Source File
-# Begin Source File
-
-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 ASM Release"
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Debug"
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 DLL Release"
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 DLL Debug"
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
-
-# PROP Exclude_From_Build 1
-
-!ENDIF
-
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\zutil.c
-# End Source File
-# End Group
-# Begin Group "Header Files"
-
-# PROP Default_Filter "h;hpp;hxx;hm;inl"
-# Begin Source File
-
-SOURCE=..\..\crc32.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\deflate.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\inffast.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\inffixed.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\inflate.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\inftrees.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\trees.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\zconf.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\zlib.h
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\zutil.h
-# End Source File
-# End Group
-# Begin Group "Resource Files"
-
-# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
-# Begin Source File
-
-SOURCE=..\..\win32\zlib1.rc
-# End Source File
-# End Group
-# Begin Group "Assembler Files (Unsupported)"
-
-# PROP Default_Filter "asm;obj;c;cpp;cxx;h;hpp;hxx"
-# Begin Source File
-
-SOURCE=..\..\contrib\masmx86\gvmat32.asm
-
-!IF  "$(CFG)" == "zlib - Win32 DLL ASM Release"
-
-# Begin Custom Build - Assembling...
-IntDir=.\Win32_DLL_ASM_Release
-InputPath=..\..\contrib\masmx86\gvmat32.asm
-InputName=gvmat32
-
-"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Fo"$(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)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
-
-# End Custom Build
-
-!ELSEIF  "$(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 LIB ASM Release"
-
-# Begin Custom Build - Assembling...
-IntDir=.\Win32_LIB_ASM_Release
-InputPath=..\..\contrib\masmx86\gvmat32.asm
-InputName=gvmat32
-
-"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Fo"$(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)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
-
-# End Custom Build
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
-
-# PROP Exclude_From_Build 1
-
-!ENDIF
-
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\contrib\masmx86\gvmat32c.c
-
-!IF  "$(CFG)" == "zlib - Win32 DLL ASM Release"
-
-# ADD CPP /I "..\.."
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 DLL ASM Debug"
-
-# ADD CPP /I "..\.."
-
-!ELSEIF  "$(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 LIB ASM Release"
-
-# ADD CPP /I "..\.."
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB ASM Debug"
-
-# ADD CPP /I "..\.."
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Release"
-
-# PROP Exclude_From_Build 1
-# ADD CPP /I "..\.."
-
-!ELSEIF  "$(CFG)" == "zlib - Win32 LIB Debug"
-
-# PROP Exclude_From_Build 1
-# ADD CPP /I "..\.."
-
-!ENDIF
-
-# End Source File
-# Begin Source File
-
-SOURCE=..\..\contrib\masmx86\inffas32.asm
-
-!IF  "$(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)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Fo"$(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)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
-
-# End Custom Build
-
-!ELSEIF  "$(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 LIB ASM Release"
-
-# Begin Custom Build - Assembling...
-IntDir=.\Win32_LIB_ASM_Release
-InputPath=..\..\contrib\masmx86\inffas32.asm
-InputName=inffas32
-
-"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Fo"$(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)" "$(OUTDIR)"
-	ml.exe /nologo /c /coff /Cx /Zi /Fo"$(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
-
-!ENDIF
-
-# End Source File
-# End Group
-# Begin Source File
-
-SOURCE=.\README.txt
-# End Source File
-# End Target
-# End Project
--- a/old/visualc6/zlib.dsw
+++ b/old/visualc6/zlib.dsw
@@ -1,59 +0,0 @@
-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.1.2.5.2" install="/opt/lib/" user="root:bin" permission="644"/>
-         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.5.2"/>
-         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.5.2"/>
-         <QPG:Add file="../libz.so.1.2.5.2" install="/opt/lib/" component="slib"/>
+         <QPG:Add file="../libz.so.1.2.5.3" install="/opt/lib/" user="root:bin" permission="644"/>
+         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.5.3"/>
+         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.5.3"/>
+         <QPG:Add file="../libz.so.1.2.5.3" install="/opt/lib/" component="slib"/>
      </QPG:Files>

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

            <QPM:ReleaseDescription>
-               <QPM:ReleaseVersion>1.2.5.2</QPM:ReleaseVersion>
+               <QPM:ReleaseVersion>1.2.5.3</QPM:ReleaseVersion>
               <QPM:ReleaseUrgency>Medium</QPM:ReleaseUrgency>
               <QPM:ReleaseStability>Stable</QPM:ReleaseStability>
               <QPM:ReleaseNoteMinor></QPM:ReleaseNoteMinor>
--- a/treebuild.xml
+++ b/treebuild.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" ?>
-<package name="zlib" version="1.2.5.2">
-    <library name="zlib" dlversion="1.2.5.2" dlname="z">
+<package name="zlib" version="1.2.5.3">
+    <library name="zlib" dlversion="1.2.5.3" dlname="z">
 	<property name="description"> zip compression library </property>
 	<property name="include-target-dir" value="$(@PACKAGE/install-includedir)" />

--- a/trees.c
+++ b/trees.c
@@ -1,5 +1,5 @@
 /* trees.c -- output deflated data using Huffman coding
- * Copyright (C) 1995-2010 Jean-loup Gailly
+ * Copyright (C) 1995-2012 Jean-loup Gailly
 * detect_data_type() function provided freely by Cosmin Truta, 2006
 * For conditions of distribution and use, see copyright notice in zlib.h
 */
@@ -74,11 +74,6 @@ local const uch bl_order[BL_CODES]
 * probability, to avoid transmitting the lengths for unused bit length codes.
 */

-#define Buf_size (8 * 2*sizeof(char))
-/* Number of bits used within bi_buf. (bi_buf might be implemented on
- * more than 16 bits on some systems.)
- */
-
 /* ===========================================================================
 * Local data. These are initialized only once.
 */
@@ -399,7 +394,6 @@ void ZLIB_INTERNAL _tr_init(s)

    s->bi_buf = 0;
    s->bi_valid = 0;
-    s->last_eob_len = 8; /* enough lookahead for inflate */
 #ifdef DEBUG
    s->compressed_len = 0L;
    s->bits_sent = 0L;
@@ -882,16 +876,18 @@ void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)
    copy_block(s, buf, (unsigned)stored_len, 1); /* with header */
 }

+/* ===========================================================================
+ * Flush the bits in the bit buffer to pending output (leaves at most 7 bits)
+ */
+void ZLIB_INTERNAL _tr_flush_bits(s)
+    deflate_state *s;
+{
+    bi_flush(s);
+}
+
 /* ===========================================================================
 * Send one empty static block to give enough lookahead for inflate.
 * This takes 10 bits, of which 7 may remain in the bit buffer.
- * The current inflate code requires 9 bits of lookahead. If the
- * last two codes for the previous block (real code plus EOB) were coded
- * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
- * the last real code. In this case we send two empty static blocks instead
- * of one. (There are no problems if the previous block is stored or fixed.)
- * To simplify the code, we assume the worst case of last real code encoded
- * on one bit only.
 */
 void ZLIB_INTERNAL _tr_align(s)
    deflate_state *s;
@@ -902,20 +898,6 @@ void ZLIB_INTERNAL _tr_align(s)
    s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
 #endif
    bi_flush(s);
-    /* Of the 10 bits for the empty block, we have already sent
-     * (10 - bi_valid) bits. The lookahead for the last real code (before
-     * the EOB of the previous block) was thus at least one plus the length
-     * of the EOB plus what we have just sent of the empty static block.
-     */
-    if (1 + s->last_eob_len + 10 - s->bi_valid < 9) {
-        send_bits(s, STATIC_TREES<<1, 3);
-        send_code(s, END_BLOCK, static_ltree);
-#ifdef DEBUG
-        s->compressed_len += 10L;
-#endif
-        bi_flush(s);
-    }
-    s->last_eob_len = 7;
 }

 /* ===========================================================================
@@ -1118,7 +1100,6 @@ local void compress_block(s, ltree, dtree)
    } while (lx < s->last_lit);

    send_code(s, END_BLOCK, ltree);
-    s->last_eob_len = ltree[END_BLOCK].Len;
 }

 /* ===========================================================================
@@ -1226,7 +1207,6 @@ local void copy_block(s, buf, len, header)
    int      header;  /* true if block header must be written */
 {
    bi_windup(s);        /* align on byte boundary */
-    s->last_eob_len = 8; /* enough lookahead for inflate */

    if (header) {
        put_short(s, (ush)len);
--- a/win32/Makefile.gcc
+++ b/win32/Makefile.gcc
@@ -108,6 +108,12 @@ minigzip_d.exe: minigzip.o $(IMPLIB)
 	$(LD) $(LDFLAGS) -o $@ minigzip.o $(IMPLIB)
 	$(STRIP) $@

+example.o: test/example.c zlib.h zconf.h
+	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I. -c -o $@ test/example.c
+
+minigzip.o: test/minigzip.c zlib.h zconf.h
+	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I. -c -o $@ test/minigzip.c
+
 zlibrc.o: win32/zlib1.rc
 	$(RC) $(RCFLAGS) -o $@ win32/zlib1.rc

@@ -157,7 +163,6 @@ adler32.o: zlib.h zconf.h
 compress.o: zlib.h zconf.h
 crc32.o: crc32.h zlib.h zconf.h
 deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
 gzclose.o: zlib.h zconf.h gzguts.h
 gzlib.o: zlib.h zconf.h gzguts.h
 gzread.o: zlib.h zconf.h gzguts.h
@@ -166,7 +171,6 @@ inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
 inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o: zlib.h zconf.h
 trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
 uncompr.o: zlib.h zconf.h
 zutil.o: zutil.h zlib.h zconf.h
--- a/win32/Makefile.msc
+++ b/win32/Makefile.msc
@@ -72,6 +72,9 @@ minigzip_d.exe: minigzip.obj $(IMPLIB)
 .c.obj:
 	$(CC) -c $(WFLAGS) $(CFLAGS) $<

+{test}.c.obj:
+	$(CC) -c -I. $(WFLAGS) $(CFLAGS) $<
+
 {contrib/masmx64}.c.obj:
 	$(CC) -c $(WFLAGS) $(CFLAGS) $<

--- a/win32/zlib.def
+++ b/win32/zlib.def
@@ -42,6 +42,7 @@ EXPORTS
    gzputs
    gzgets
    gzputc
+    gzgetc
    gzungetc
    gzflush
    gzseek
--- a/zlib.3
+++ b/zlib.3
@@ -1,4 +1,4 @@
-.TH ZLIB 3 "17 Dec 2011"
+.TH ZLIB 3 "15 Jan 2012"
 .SH NAME
 zlib \- compression/decompression library
 .SH SYNOPSIS
@@ -125,8 +125,8 @@ 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 1.2.5.2
-Copyright (C) 1995-2011 Jean-loup Gailly (jloup@gzip.org)
+Version 1.2.5.3
+Copyright (C) 1995-2012 Jean-loup Gailly (jloup@gzip.org)
 and Mark Adler (madler@alumni.caltech.edu).
 .LP
 This software is provided "as-is,"
--- a/zlib.3.pdf
+++ b/zlib.3.pdf
--- a/zlib.h
+++ b/zlib.h
@@ -1,7 +1,7 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.5.2, December 17th, 2011
+  version 1.2.5.3, January 15th, 2012

-  Copyright (C) 1995-2011 Jean-loup Gailly and Mark Adler
+  Copyright (C) 1995-2012 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
@@ -37,12 +37,12 @@
 extern "C" {
 #endif

-#define ZLIB_VERSION "1.2.5.2"
-#define ZLIB_VERNUM 0x1252
+#define ZLIB_VERSION "1.2.5.3"
+#define ZLIB_VERNUM 0x1253
 #define ZLIB_VER_MAJOR 1
 #define ZLIB_VER_MINOR 2
 #define ZLIB_VER_REVISION 5
-#define ZLIB_VER_SUBREVISION 2
+#define ZLIB_VER_SUBREVISION 3

 /*
    The 'zlib' compression library provides in-memory compression and
@@ -715,7 +715,8 @@ ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
   been generated, but not yet provided in the available output.  The bytes not
   provided would be due to the available output space having being consumed.
   The number of bits of output not provided are between 0 and 7, where they
-   await more bits to join them in order to fill out a full byte.
+   await more bits to join them in order to fill out a full byte.  If pending
+   or bits are Z_NULL, then those values are not set.

     deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent.
@@ -733,8 +734,9 @@ ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
   than or equal to 16, and that many of the least significant bits of value
   will be inserted in the output.

-     deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
-   stream state was inconsistent.
+     deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough
+   room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the
+   source stream state was inconsistent.
 */

 ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
@@ -1363,8 +1365,8 @@ ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
   returns the value that was written, or -1 in case of error.
 */

-/*
 ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
+/*
     Reads one byte from the compressed file.  gzgetc returns this byte or -1
   in case of end of file or error.  This is implemented as a macro for speed.
   As such, it does not do all of the checking the other functions do.  I.e.
Author	SHA1	Message	Date
Mark Adler	defd366a41	zlib 1.2.5.3	2012-01-15 18:58:21 -08:00
Mark Adler	68f64498c2	Make sure that no extra inserting is done if the strategy changes.	2012-01-14 10:53:23 -08:00
Mark Adler	4f5779a8e7	Insert the first two strings in the hash table after a flush. This allows deflate to generate the same output when continuing after a Z_SYNC_FLUSH vs. using deflateSetDictionary() after a Z_FULL_FLUSH or a deflateReset(). It also slightly improves compression when flushing by providing two more strings to possibly match at the start of the new block.	2012-01-13 23:54:40 -06:00
Mark Adler	0b828b4aa6	Write out all of the available bits when using Z_BLOCK. Previously, the bit buffer would hold 1 to 16 bits after "all" of the output is provided after a Z_BLOCK deflate() call. Now at most seven bits remain in the output buffer after Z_BLOCK. flush_pending() now flushes the bit buffer before copying out the byte buffer, in order for it to really flush as much as possible.	2012-01-07 14:08:02 -08:00
Mark Adler	8f5eceefe8	Remove second empty static block for Z_PARTIAL_FLUSH. Z_PARTIAL_FLUSH would sometimes emit two empty static blocks instead of one in order to provide enough lookahead for inflate to be able to decode what was last compressed. inflate no longer needs that much lookahead, so this removes the possibility of emitting the second empty static block. Z_PARTIAL_FLUSH will now emit only one empty static block.	2012-01-07 14:03:07 -08:00
Mark Adler	263b1a05b0	Allow deflatePrime() to insert bits in the middle of a stream. This allows the insertion of multiple empty static blocks for the purpose of efficiently bringing a stream to a byte boundary.	2012-01-07 14:03:07 -08:00
Mark Adler	19761b8506	Permit Z_NULL arguments to deflatePending. This avoids having to create useless variables for return values that aren't needed.	2011-12-29 00:15:44 -08:00
Mark Adler	9d55abc969	Avoid extraneous empty blocks when doing empty flushes. Previously when doing an empty flush, a extra static or stored block could be emitted before the requested empty static or stored block. This patch prevents the emission of empty blocks by the deflate_* functions.	2011-12-29 00:03:55 -08:00
Mark Adler	f1ebdd6a9c	Permit stronger flushes after Z_BLOCK flushes. The incorporation of the Z_BLOCK flush did not update the rejection of lower ranked flushes immediately after higher ranked flushes with no more input data. This prevented an empty Z_SYNC_FLUSH right after a Z_BLOCK flush, which would be desired to bring the deflate stream to a byte boundary conditionally on whether or not it was already at a byte boundary. This patch re-ranks Z_BLOCK above Z_NO_FLUSH but below Z_PARTIAL_FLUSH, allowing stronger empty flushes to follow a Z_BLOCK flush.	2011-12-28 23:57:14 -08:00
Mark Adler	bafcad9028	Update win32/Makefile.gcc to build test/*.c [Truta].	2011-12-23 20:57:10 -08:00
Mark Adler	b745a48f41	Update AS400 build files and documentation [Monnerat]. Moves new function definitions in order to preserve shared library compatibility with previous versions. Also increases buffer size in RPG binding and updates the documentation.	2011-12-19 22:31:02 -08:00
Mark Adler	a8bd629c4e	Remove old/visualc6 given CMakefile and other alternatives.	2011-12-18 22:27:48 -08:00
Mark Adler	7de4b03b38	Update win32/Makefile.msc to build test/*.c [Truta].	2011-12-18 22:20:02 -08:00
Mark Adler	e7289ed5f7	Do not use _lseeki64 under Borland C++ [Truta].	2011-12-18 22:17:51 -08:00
Mark Adler	3d85f02a09	Restore gzgetc function for binary compatibility. Newly compiled applications will use the gzgetc macro.	2011-12-18 14:47:08 -08:00
Mark Adler	df60b50769	Change version numbers to 1.2.5.3.	2011-12-18 12:07:25 -08:00