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zlib 1.2.2.1

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This commit is contained in:
Mark Adler 2011-09-09 23:24:24 -07:00
parent 79fbcdc939
commit 9811b53dd9
36 changed files with 1334 additions and 429 deletions
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20
ChangeLog
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@ -1,6 +1,26 @@
ChangeLog file for zlib
Changes in 1.2.2.1 (31 October 2004)
- Allow inflateSetDictionary() call for raw inflate
- Fix inflate header crc check bug for file names and comments
- Add deflateSetHeader() and gz_header structure for custom gzip headers
- Add inflateGetheader() to retrieve gzip headers
- Add crc32_combine() and adler32_combine() functions
- Add alloc_func, free_func, in_func, out_func to Z_PREFIX list
- Use zstreamp consistently in zlib.h (inflate_back functions)
- Remove GUNZIP condition from definition of inflate_mode in inflate.h
and in contrib/inflate86/inffast.S [Truta, Anderson]
- Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson]
- Update projects/README.projects and projects/visualc6 [Truta]
- Update win32/DLL_FAQ.txt [Truta]
- Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta]
- Deprecate Z_ASCII; use Z_TEXT instead [Truta]
- Use a new algorithm for setting strm->data_type in trees.c [Truta]
- Do not define an exit() prototype in zutil.c unless DEBUG defined
- Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta]
- Add comment in zlib.h for Z_NO_FLUSH parameter to deflate()
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]

2
Makefile
View File

@ -30,7 +30,7 @@ CPP=$(CC) -E
LIBS=libz.a
SHAREDLIB=libz.so
SHAREDLIBV=libz.so.1.2.2
SHAREDLIBV=libz.so.1.2.2.1
SHAREDLIBM=libz.so.1
AR=ar rc

2
Makefile.in
View File

@ -30,7 +30,7 @@ CPP=$(CC) -E
LIBS=libz.a
SHAREDLIB=libz.so
SHAREDLIBV=libz.so.1.2.2
SHAREDLIBV=libz.so.1.2.2.1
SHAREDLIBM=libz.so.1
AR=ar rc

4
README
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@ -1,6 +1,6 @@
ZLIB DATA COMPRESSION LIBRARY
zlib 1.2.2 is a general purpose data compression library. All the code is
zlib 1.2.2.1 is a general purpose data compression library. All the code is
thread safe. The data format used by the zlib library is described by RFCs
(Request for Comments) 1950 to 1952 in the files
http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
@ -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 1.2.2 are documented in the file ChangeLog.
The changes made in version 1.2.2.1 are documented in the file ChangeLog.
Unsupported third party contributions are provided in directory "contrib".

24
adler32.c
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@ -1,5 +1,5 @@
/* adler32.c -- compute the Adler-32 checksum of a data stream
* Copyright (C) 1995-2003 Mark Adler
* Copyright (C) 1995-2004 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -72,3 +72,25 @@ uLong ZEXPORT adler32(adler, buf, len)
}
return (s2 << 16) | s1;
}
/* ========================================================================= */
uLong ZEXPORT adler32_combine(adler1, adler2, len2)
uLong adler1;
uLong adler2;
uLong len2;
{
unsigned long s1;
unsigned long s2;
len2 %= BASE;
s1 = adler1 & 0xffff;
s2 = len2 * s1;
MOD(s2);
s1 += (adler2 & 0xffff) + BASE - 1;
s2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - len2;
if (s1 > BASE) s1 -= BASE;
if (s1 > BASE) s1 -= BASE;
if (s2 > (BASE << 1)) s2 -= (BASE << 1);
if (s2 > BASE) s2 -= BASE;
return (s2 << 16) | s1;
}

6
as400/zlib.inc
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@ -1,7 +1,7 @@
* ZLIB.INC - Interface to the general purpose compression library
*
* ILE RPG400 version by Patrick Monnerat, DATASPHERE.
* Version 1.2.2
* Version 1.2.2.1
*
*
* WARNING:
@ -20,8 +20,8 @@
* Constants
**************************************************************************
*
D ZLIB_VERSION C '1.2.2' Header's version
D ZLIB_VERNUM C X'1220'
D ZLIB_VERSION C '1.2.2.1' Header's version
D ZLIB_VERNUM C X'1221'
*
D Z_NO_FLUSH C 0
D Z_SYNC_FLUSH C 2

2
compress.c
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@ -1,5 +1,5 @@
/* compress.c -- compress a memory buffer
* Copyright (C) 1995-2002 Jean-loup Gailly.
* Copyright (C) 1995-2003 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/

4
contrib/infback9/inftree9.c
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@ -9,7 +9,7 @@
#define MAXBITS 15
const char inflate9_copyright[] =
" inflate9 1.2.2 Copyright 1995-2004 Mark Adler ";
" inflate9 1.2.2.1 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, 199, 198};
133, 133, 133, 133, 144, 77, 207};
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,

792
contrib/inflate86/inffas86.c
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File diff suppressed because it is too large Load Diff

9
contrib/inflate86/inffast.S
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@ -188,17 +188,8 @@
/*
* typedef enum inflate_mode consts, in inflate.h
*/
#ifndef NO_GUNZIP
#define GUNZIP
#endif
#ifdef GUNZIP
#define INFLATE_MODE_TYPE 11 /* state->mode flags enum-ed in inflate.h */
#define INFLATE_MODE_BAD 26
#else
#define INFLATE_MODE_TYPE 3
#define INFLATE_MODE_BAD 17
#endif
#if ! defined( USE_MMX ) && ! defined( NO_MMX )

6
contrib/vstudio/vc7/zlib.rc
View File

@ -2,8 +2,8 @@
#define IDR_VERSION1 1
IDR_VERSION1 VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE
FILEVERSION 1,2,2
PRODUCTVERSION 1,2,2
FILEVERSION 1,2,2,1
PRODUCTVERSION 1,2,2,1
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", "1.2.2\0"
VALUE "FileVersion", "1.2.2.1\0"
VALUE "InternalName", "zlib\0"
VALUE "OriginalFilename", "zlib.dll\0"
VALUE "ProductName", "ZLib.DLL\0"

95
crc32.c
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@ -1,12 +1,12 @@
/* crc32.c -- compute the CRC-32 of a data stream
* Copyright (C) 1995-2003 Mark Adler
* Copyright (C) 1995-2004 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*
* Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster
* CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing
* tables for updating the shift register in one step with three exclusive-ors
* instead of four steps with four exclusive-ors. This results about a factor
* of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.
* instead of four steps with four exclusive-ors. This results in about a
* factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.
*/
/* @(#) $Id$ */
@ -72,6 +72,9 @@ local void make_crc_table OF((void));
#ifdef MAKECRCH
local void write_table OF((FILE *, const unsigned long FAR *));
#endif /* MAKECRCH */
local unsigned long gf2_matrix_times OF((unsigned long *mat,
unsigned long vec));
local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
/*
Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
@ -331,3 +334,89 @@ local unsigned long crc32_big(crc, buf, len)
}
#endif /* BYFOUR */
#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */
/* ========================================================================= */
local unsigned long gf2_matrix_times(mat, vec)
unsigned long *mat;
unsigned long vec;
{
unsigned long sum;
sum = 0;
while (vec) {
if (vec & 1)
sum ^= *mat;
vec >>= 1;
mat++;
}
return sum;
}
/* ========================================================================= */
local void gf2_matrix_square(square, mat)
unsigned long *square;
unsigned long *mat;
{
int n;
for (n = 0; n < GF2_DIM; n++)
square[n] = gf2_matrix_times(mat, mat[n]);
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine(crc1, crc2, len2)
uLong crc1;
uLong crc2;
uLong len2;
{
int n;
unsigned long row;
unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */
unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */
/* degenerate case */
if (len2 == 0)
return crc1;
/* put operator for one zero bit in odd */
odd[0] = 0xedb88320L; /* CRC-32 polynomial */
row = 1;
for (n = 1; n < GF2_DIM; n++) {
odd[n] = row;
row <<= 1;
}
/* put operator for two zero bits in even */
gf2_matrix_square(even, odd);
/* put operator for four zero bits in odd */
gf2_matrix_square(odd, even);
/* apply len2 zeros to crc1 (first square will put the operator for one
zero byte, eight zero bits, in even) */
do {
/* apply zeros operator for this bit of len2 */
gf2_matrix_square(even, odd);
if (len2 & 1)
crc1 = gf2_matrix_times(even, crc1);
len2 >>= 1;
/* if no more bits set, then done */
if (len2 == 0)
break;
/* another iteration of the loop with odd and even swapped */
gf2_matrix_square(odd, even);
if (len2 & 1)
crc1 = gf2_matrix_times(odd, crc1);
len2 >>= 1;
/* if no more bits set, then done */
} while (len2 != 0);
/* return combined crc */
crc1 ^= crc2;
return crc1;
}

174
deflate.c
View File

@ -52,7 +52,7 @@
#include "deflate.h"
const char deflate_copyright[] =
" deflate 1.2.2 Copyright 1995-2004 Jean-loup Gailly ";
" deflate 1.2.2.1 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
@ -274,6 +274,7 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
s->strm = strm;
s->wrap = wrap;
s->gzhead = Z_NULL;
s->w_bits = windowBits;
s->w_size = 1 << s->w_bits;
s->w_mask = s->w_size - 1;
@ -390,6 +391,17 @@ int ZEXPORT deflateReset (strm)
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflateSetHeader (strm, head)
z_streamp strm;
gz_headerp head;
{
if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
if (strm->state->wrap != 2) return Z_STREAM_ERROR;
strm->state->gzhead = head;
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflatePrime (strm, bits, value)
z_streamp strm;
@ -548,20 +560,47 @@ int ZEXPORT deflate (strm, flush)
if (s->status == INIT_STATE) {
#ifdef GZIP
if (s->wrap == 2) {
strm->adler = crc32(0L, Z_NULL, 0);
put_byte(s, 31);
put_byte(s, 139);
put_byte(s, 8);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, s->level == 9 ? 2 :
(s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
4 : 0));
put_byte(s, 255);
s->status = BUSY_STATE;
strm->adler = crc32(0L, Z_NULL, 0);
if (s->gzhead == NULL) {
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, s->level == 9 ? 2 :
(s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
4 : 0));
put_byte(s, 255);
s->status = BUSY_STATE;
}
else {
put_byte(s, (s->gzhead->text ? 1 : 0) +
(s->gzhead->hcrc ? 2 : 0) +
(s->gzhead->extra == Z_NULL ? 0 : 4) +
(s->gzhead->name == Z_NULL ? 0 : 8) +
(s->gzhead->comment == Z_NULL ? 0 : 16)
);
put_byte(s, s->gzhead->time & 0xff);
put_byte(s, (s->gzhead->time >> 8) & 0xff);
put_byte(s, (s->gzhead->time >> 16) & 0xff);
put_byte(s, (s->gzhead->time >> 24) & 0xff);
put_byte(s, s->level == 9 ? 2 :
(s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
4 : 0));
put_byte(s, s->gzhead->os & 0xff);
if (s->gzhead->extra != NULL) {
put_byte(s, s->gzhead->extra_len & 0xff);
put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
}
if (s->gzhead->hcrc)
strm->adler = crc32(strm->adler, s->pending_buf,
s->pending);
s->gzindex = 0;
s->status = EXTRA_STATE;
}
}
else
#endif
@ -592,6 +631,110 @@ int ZEXPORT deflate (strm, flush)
strm->adler = adler32(0L, Z_NULL, 0);
}
}
#ifdef GZIP
if (s->status == EXTRA_STATE) {
if (s->gzhead->extra != NULL) {
int beg = s->pending; /* start of bytes to update crc */
while (s->gzindex < (s->gzhead->extra_len & 0xffff)) {
if (s->pending == s->pending_buf_size) {
if (s->gzhead->hcrc && s->pending > beg)
strm->adler = crc32(strm->adler, s->pending_buf + beg,
s->pending - beg);
flush_pending(strm);
beg = s->pending;
if (s->pending == s->pending_buf_size)
break;
}
put_byte(s, s->gzhead->extra[s->gzindex]);
s->gzindex++;
}
if (s->gzhead->hcrc && s->pending > beg)
strm->adler = crc32(strm->adler, s->pending_buf + beg,
s->pending - beg);
if (s->gzindex == s->gzhead->extra_len) {
s->gzindex = 0;
s->status = NAME_STATE;
}
}
else
s->status = NAME_STATE;
}
if (s->status == NAME_STATE) {
if (s->gzhead->name != NULL) {
int beg = s->pending; /* start of bytes to update crc */
int val;
do {
if (s->pending == s->pending_buf_size) {
if (s->gzhead->hcrc && s->pending > beg)
strm->adler = crc32(strm->adler, s->pending_buf + beg,
s->pending - beg);
flush_pending(strm);
beg = s->pending;
if (s->pending == s->pending_buf_size) {
val = 1;
break;
}
}
val = s->gzhead->name[s->gzindex++];
put_byte(s, val);
} while (val != 0);
if (s->gzhead->hcrc && s->pending > beg)
strm->adler = crc32(strm->adler, s->pending_buf + beg,
s->pending - beg);
if (val == 0) {
s->gzindex = 0;
s->status = COMMENT_STATE;
}
}
else
s->status = COMMENT_STATE;
}
if (s->status == COMMENT_STATE) {
if (s->gzhead->comment != NULL) {
int beg = s->pending; /* start of bytes to update crc */
int val;
do {
if (s->pending == s->pending_buf_size) {
if (s->gzhead->hcrc && s->pending > beg)
strm->adler = crc32(strm->adler, s->pending_buf + beg,
s->pending - beg);
flush_pending(strm);
beg = s->pending;
if (s->pending == s->pending_buf_size) {
val = 1;
break;
}
}
val = s->gzhead->comment[s->gzindex++];
put_byte(s, val);
} while (val != 0);
if (s->gzhead->hcrc && s->pending > beg)
strm->adler = crc32(strm->adler, s->pending_buf + beg,
s->pending - beg);
if (val == 0)
s->status = HCRC_STATE;
}
else
s->status = HCRC_STATE;
}
if (s->status == HCRC_STATE) {
if (s->gzhead->hcrc) {
if (s->pending + 2 > s->pending_buf_size)
flush_pending(strm);
if (s->pending + 2 <= s->pending_buf_size) {
put_byte(s, strm->adler & 0xff);
put_byte(s, (strm->adler >> 8) & 0xff);
strm->adler = crc32(0L, Z_NULL, 0);
s->status = BUSY_STATE;
}
}
else
s->status = BUSY_STATE;
}
#endif
/* Flush as much pending output as possible */
if (s->pending != 0) {
@ -704,7 +847,12 @@ int ZEXPORT deflateEnd (strm)
if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
status = strm->state->status;
if (status != INIT_STATE && status != BUSY_STATE &&
if (status != INIT_STATE &&
status != EXTRA_STATE &&
status != NAME_STATE &&
status != COMMENT_STATE &&
status != HCRC_STATE &&
status != BUSY_STATE &&
status != FINISH_STATE) {
return Z_STREAM_ERROR;
}

8
deflate.h
View File

@ -1,5 +1,5 @@
/* deflate.h -- internal compression state
* Copyright (C) 1995-2002 Jean-loup Gailly
* Copyright (C) 1995-2004 Jean-loup Gailly
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -49,6 +49,10 @@
/* All codes must not exceed MAX_BITS bits */
#define INIT_STATE 42
#define EXTRA_STATE 69
#define NAME_STATE 73
#define COMMENT_STATE 91
#define HCRC_STATE 103
#define BUSY_STATE 113
#define FINISH_STATE 666
/* Stream status */
@ -95,6 +99,8 @@ 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 */
gz_headerp gzhead; /* gzip header information to write */
int gzindex; /* where in extra, name, or comment */
Byte method; /* STORED (for zip only) or DEFLATED */
int last_flush; /* value of flush param for previous deflate call */

4
example.c
View File

@ -1,5 +1,5 @@
/* example.c -- usage example 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
*/
@ -11,8 +11,6 @@
#ifdef STDC
# include <string.h>
# include <stdlib.h>
#else
extern void exit OF((int));
#endif
#if defined(VMS) || defined(RISCOS)

9
gzio.c
View File

@ -1,5 +1,5 @@
/* gzio.c -- IO on .gz files
* 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
*
* Compile this file with -DNO_GZCOMPRESS to avoid the compression code.
@ -11,7 +11,7 @@
#include "zutil.h"
#ifdef NO_DEFLATE /* for compatiblity with old definition */
#ifdef NO_DEFLATE /* for compatibility with old definition */
# define NO_GZCOMPRESS
#endif
@ -941,7 +941,6 @@ local uLong getLong (s)
int ZEXPORT gzclose (file)
gzFile file;
{
int err;
gz_stream *s = (gz_stream*)file;
if (s == NULL) return Z_STREAM_ERROR;
@ -950,8 +949,8 @@ int ZEXPORT gzclose (file)
#ifdef NO_GZCOMPRESS
return Z_STREAM_ERROR;
#else
err = do_flush (file, Z_FINISH);
if (err != Z_OK) return destroy((gz_stream*)file);
if (do_flush (file, Z_FINISH) != Z_OK)
return destroy((gz_stream*)file);
putLong (s->file, s->crc);
putLong (s->file, (uLong)(s->in & 0xffffffff));

8
infback.c
View File

@ -1,5 +1,5 @@
/* infback.c -- inflate using a call-back interface
* Copyright (C) 1995-2003 Mark Adler
* Copyright (C) 1995-2004 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -26,7 +26,7 @@ local void fixedtables OF((struct inflate_state FAR *state));
window and output buffer that is 2**windowBits bytes.
*/
int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)
z_stream FAR *strm;
z_streamp strm;
int windowBits;
unsigned char FAR *window;
const char *version;
@ -238,7 +238,7 @@ struct inflate_state FAR *state;
are not correct, i.e. strm is Z_NULL or the state was not initialized.
*/
int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)
z_stream FAR *strm;
z_streamp strm;
in_func in;
void FAR *in_desc;
out_func out;
@ -611,7 +611,7 @@ void FAR *out_desc;
}
int ZEXPORT inflateBackEnd(strm)
z_stream FAR *strm;
z_streamp strm;
{
if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
return Z_STREAM_ERROR;

75
inflate.c
View File

@ -1,5 +1,5 @@
/* inflate.c -- zlib decompression
* Copyright (C) 1995-2003 Mark Adler
* Copyright (C) 1995-2004 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -113,6 +113,7 @@ z_streamp strm;
state->mode = HEAD;
state->last = 0;
state->havedict = 0;
state->head = Z_NULL;
state->wsize = 0;
state->whave = 0;
state->hold = 0;
@ -582,6 +583,8 @@ int flush;
break;
}
state->flags = 0; /* expect zlib header */
if (state->head != Z_NULL)
state->head->done = -1;
if (!(state->wrap & 1) || /* check if zlib header allowed */
#else
if (
@ -621,16 +624,24 @@ int flush;
state->mode = BAD;
break;
}
if (state->head != Z_NULL)
state->head->text = (int)((hold >> 8) & 1);
if (state->flags & 0x0200) CRC2(state->check, hold);
INITBITS();
state->mode = TIME;
case TIME:
NEEDBITS(32);
if (state->head != Z_NULL)
state->head->time = hold;
if (state->flags & 0x0200) CRC4(state->check, hold);
INITBITS();
state->mode = OS;
case OS:
NEEDBITS(16);
if (state->head != Z_NULL) {
state->head->xflags = (int)(hold & 0xff);
state->head->os = (int)(hold >> 8);
}
if (state->flags & 0x0200) CRC2(state->check, hold);
INITBITS();
state->mode = EXLEN;
@ -638,15 +649,26 @@ int flush;
if (state->flags & 0x0400) {
NEEDBITS(16);
state->length = (unsigned)(hold);
if (state->head != Z_NULL)
state->head->extra_len = (unsigned)hold;
if (state->flags & 0x0200) CRC2(state->check, hold);
INITBITS();
}
else if (state->head != Z_NULL)
state->head->extra = Z_NULL;
state->mode = EXTRA;
case EXTRA:
if (state->flags & 0x0400) {
copy = state->length;
if (copy > have) copy = have;
if (copy) {
if (state->head != Z_NULL &&
state->head->extra != Z_NULL) {
len = state->head->extra_len - state->length;
zmemcpy(state->head->extra + len, next,
len + copy > state->head->extra_max ?
state->head->extra_max - len : copy);
}
if (state->flags & 0x0200)
state->check = crc32(state->check, next, copy);
have -= copy;
@ -655,6 +677,7 @@ int flush;
}
if (state->length) goto inf_leave;
}
state->length = 0;
state->mode = NAME;
case NAME:
if (state->flags & 0x0800) {
@ -662,13 +685,20 @@ int flush;
copy = 0;
do {
len = (unsigned)(next[copy++]);
if (state->head != Z_NULL &&
state->head->name != Z_NULL &&
state->length < state->head->name_max)
state->head->name[state->length++] = len;
} while (len && copy < have);
if (state->flags & 0x02000)
if (state->flags & 0x0200)
state->check = crc32(state->check, next, copy);
have -= copy;
next += copy;
if (len) goto inf_leave;
}
else if (state->head != Z_NULL)
state->head->name = Z_NULL;
state->length = 0;
state->mode = COMMENT;
case COMMENT:
if (state->flags & 0x1000) {
@ -676,13 +706,19 @@ int flush;
copy = 0;
do {
len = (unsigned)(next[copy++]);
if (state->head != Z_NULL &&
state->head->comment != Z_NULL &&
state->length < state->head->comm_max)
state->head->comment[state->length++] = len;
} while (len && copy < have);
if (state->flags & 0x02000)
if (state->flags & 0x0200)
state->check = crc32(state->check, next, copy);
have -= copy;
next += copy;
if (len) goto inf_leave;
}
else if (state->head != Z_NULL)
state->head->comment = Z_NULL;
state->mode = HCRC;
case HCRC:
if (state->flags & 0x0200) {
@ -694,6 +730,10 @@ int flush;
}
INITBITS();
}
if (state->head != Z_NULL) {
state->head->hcrc = (int)((state->flags >> 9) & 1);
state->head->done = 1;
}
strm->adler = state->check = crc32(0L, Z_NULL, 0);
state->mode = TYPE;
break;
@ -1110,12 +1150,16 @@ uInt dictLength;
/* check state */
if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if (state->mode != DICT) return Z_STREAM_ERROR;
if (state->wrap != 0 && state->mode != DICT)
return Z_STREAM_ERROR;
/* check for correct dictionary id */
id = adler32(0L, Z_NULL, 0);
id = adler32(id, dictionary, dictLength);
if (id != state->check) return Z_DATA_ERROR;
if (state->mode == DICT) {
id = adler32(0L, Z_NULL, 0);
id = adler32(id, dictionary, dictLength);
if (id != state->check)
return Z_DATA_ERROR;
}
/* copy dictionary to window */
if (updatewindow(strm, strm->avail_out)) {
@ -1137,6 +1181,23 @@ uInt dictLength;
return Z_OK;
}
int ZEXPORT inflateGetHeader(strm, head)
z_streamp strm;
gz_headerp head;
{
struct inflate_state FAR *state;
/* check state */
if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;
/* save header structure */
state->head = head;
head->done = 0;
return Z_OK;
}
/*
Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found
or when out of input. When called, *have is the number of pattern bytes

7
inflate.h
View File

@ -1,5 +1,5 @@
/* inflate.h -- internal inflate state definition
* 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 +19,6 @@
/* Possible inflate modes between inflate() calls */
typedef enum {
HEAD, /* i: waiting for magic header */
#ifdef GUNZIP
FLAGS, /* i: waiting for method and flags (gzip) */
TIME, /* i: waiting for modification time (gzip) */
OS, /* i: waiting for extra flags and operating system (gzip) */
@ -28,7 +27,6 @@ typedef enum {
NAME, /* i: waiting for end of file name (gzip) */
COMMENT, /* i: waiting for end of comment (gzip) */
HCRC, /* i: waiting for header crc (gzip) */
#endif
DICTID, /* i: waiting for dictionary check value */
DICT, /* waiting for inflateSetDictionary() call */
TYPE, /* i: waiting for type bits, including last-flag bit */
@ -45,9 +43,7 @@ typedef enum {
MATCH, /* o: waiting for output space to copy string */
LIT, /* o: waiting for output space to write literal */
CHECK, /* i: waiting for 32-bit check value */
#ifdef GUNZIP
LENGTH, /* i: waiting for 32-bit length (gzip) */
#endif
DONE, /* finished check, done -- remain here until reset */
BAD, /* got a data error -- remain here until reset */
MEM, /* got an inflate() memory error -- remain here until reset */
@ -86,6 +82,7 @@ struct inflate_state {
int flags; /* gzip header method and flags (0 if zlib) */
unsigned long check; /* protected copy of check value */
unsigned long total; /* protected copy of output count */
gz_headerp head; /* where to save gzip header information */
/* sliding window */
unsigned wbits; /* log base 2 of requested window size */
unsigned wsize; /* window size or zero if not using window */

4
inftrees.c
View File

@ -9,7 +9,7 @@
#define MAXBITS 15
const char inflate_copyright[] =
" inflate 1.2.2 Copyright 1995-2004 Mark Adler ";
" inflate 1.2.2.1 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, 199, 198};
19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 77, 207};
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,

4
minigzip.c
View File

@ -1,5 +1,5 @@
/* minigzip.c -- simulate gzip using the zlib compression library
* Copyright (C) 1995-2002 Jean-loup Gailly.
* Copyright (C) 1995-2004 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -21,8 +21,6 @@
#ifdef STDC
# include <string.h>
# include <stdlib.h>
#else
extern void exit OF((int));
#endif
#ifdef USE_MMAP

23
projects/README.projects
View File

@ -10,18 +10,21 @@ 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.
- The project must build zlib using the source files from the official
zlib source distribution, exclusively.
- 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.
- If the project produces redistributable builds (e.g. shared objects
or DLL files), these builds must be compatible to those produced by
makefiles, if such makefiles exist in the zlib distribution.
In particular, if the project produces a DLL build for the Win32
platform, this build must comply to the officially-ammended Win32 DLL
Application Binary Interface (ABI), described in win32/DLL_FAQ.txt.
- 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.
- The project may provide additional build targets, which depend on
3rd-party (unofficially-supported) software, present in the contrib
directory. For example, it is possible to provide an "ASM build",
besides the officially-supported build, and have ASM source files
among its dependencies.
- 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

69
projects/visualc6/README.txt
View File

@ -5,23 +5,6 @@ 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
@ -36,3 +19,55 @@ This project builds the zlib binaries as follows:
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.

32
projects/visualc6/example.dsp
View File

@ -47,7 +47,7 @@ RSC=rc.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -58,7 +58,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "example - Win32 DLL Debug"
@ -73,7 +73,7 @@ LINK32=link.exe
# PROP Intermediate_Dir "Win32_DLL_Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT BASE CPP /YX
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT CPP /YX
@ -84,7 +84,7 @@ BSC32=bscmake.exe
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_Debug"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ELSEIF "$(CFG)" == "example - Win32 DLL ASM Release"
@ -99,7 +99,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -110,7 +110,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "example - Win32 DLL ASM Debug"
@ -125,7 +125,7 @@ LINK32=link.exe
# PROP Intermediate_Dir "Win32_DLL_ASM_Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT BASE CPP /YX
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT CPP /YX
@ -136,7 +136,7 @@ BSC32=bscmake.exe
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_ASM_Debug"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ELSEIF "$(CFG)" == "example - Win32 LIB Release"
@ -151,7 +151,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -162,7 +162,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "example - Win32 LIB Debug"
@ -177,7 +177,7 @@ LINK32=link.exe
# PROP Intermediate_Dir "Win32_LIB_Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT BASE CPP /YX
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT CPP /YX
@ -188,7 +188,7 @@ BSC32=bscmake.exe
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_LIB_Debug"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ELSEIF "$(CFG)" == "example - Win32 LIB ASM Release"
@ -203,7 +203,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -214,7 +214,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "example - Win32 LIB ASM Debug"
@ -229,7 +229,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MDd /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
@ -240,7 +240,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ENDIF

32
projects/visualc6/minigzip.dsp
View File

@ -47,7 +47,7 @@ RSC=rc.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -58,7 +58,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "minigzip - Win32 DLL Debug"
@ -73,7 +73,7 @@ LINK32=link.exe
# PROP Intermediate_Dir "Win32_DLL_Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT BASE CPP /YX
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT CPP /YX
@ -84,7 +84,7 @@ BSC32=bscmake.exe
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_Debug"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ELSEIF "$(CFG)" == "minigzip - Win32 DLL ASM Release"
@ -99,7 +99,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -110,7 +110,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "minigzip - Win32 DLL ASM Debug"
@ -125,7 +125,7 @@ LINK32=link.exe
# PROP Intermediate_Dir "Win32_DLL_ASM_Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT BASE CPP /YX
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT CPP /YX
@ -136,7 +136,7 @@ BSC32=bscmake.exe
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_DLL_ASM_Debug"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ELSEIF "$(CFG)" == "minigzip - Win32 LIB Release"
@ -151,7 +151,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -162,7 +162,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "minigzip - Win32 LIB Debug"
@ -177,7 +177,7 @@ LINK32=link.exe
# PROP Intermediate_Dir "Win32_LIB_Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT BASE CPP /YX
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
# SUBTRACT CPP /YX
@ -188,7 +188,7 @@ BSC32=bscmake.exe
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept /libpath:"Win32_LIB_Debug"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ELSEIF "$(CFG)" == "minigzip - Win32 LIB ASM Release"
@ -203,7 +203,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MD /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
@ -214,7 +214,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /machine:I386
!ELSEIF "$(CFG)" == "minigzip - Win32 LIB ASM Debug"
@ -229,7 +229,7 @@ LINK32=link.exe
# 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
# ADD BASE CPP /nologo /MDd /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
@ -240,7 +240,7 @@ BSC32=bscmake.exe
# 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"
# ADD LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
!ENDIF

16
projects/visualc6/zlib.dsp
View File

@ -435,7 +435,7 @@ InputPath=..\..\contrib\masmx86\gvmat32.asm
InputName=gvmat32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build
@ -447,7 +447,7 @@ InputPath=..\..\contrib\masmx86\gvmat32.asm
InputName=gvmat32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build
@ -467,7 +467,7 @@ InputPath=..\..\contrib\masmx86\gvmat32.asm
InputName=gvmat32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build
@ -479,7 +479,7 @@ InputPath=..\..\contrib\masmx86\gvmat32.asm
InputName=gvmat32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build
@ -549,7 +549,7 @@ InputPath=..\..\contrib\masmx86\inffas32.asm
InputName=inffas32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build
@ -561,7 +561,7 @@ InputPath=..\..\contrib\masmx86\inffas32.asm
InputName=inffas32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build
@ -581,7 +581,7 @@ InputPath=..\..\contrib\masmx86\inffas32.asm
InputName=inffas32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build
@ -593,7 +593,7 @@ InputPath=..\..\contrib\masmx86\inffas32.asm
InputName=inffas32
"$(IntDir)\$(InputName).obj" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
ml /nologo /c /Cx /coff /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
ml.exe /nologo /c /coff /Cx /Zi /Fo"$(IntDir)\$(InputName).obj" "$(InputPath)"
# End Custom Build

10
qnx/package.qpg
View File

@ -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.1.2.2" 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:Add file="../libz.so.1.2.2.1" install="/opt/lib/" user="root:bin" permission="644"/>
<QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.2.1"/>
<QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.2.1"/>
<QPG:Add file="../libz.so.1.2.2.1" install="/opt/lib/" component="slib"/>
</QPG:Files>
<QPG:PackageFilter>
@ -63,7 +63,7 @@
</QPM:ProductDescription>
<QPM:ReleaseDescription>
<QPM:ReleaseVersion>1.2.2</QPM:ReleaseVersion>
<QPM:ReleaseVersion>1.2.2.1</QPM:ReleaseVersion>
<QPM:ReleaseUrgency>Medium</QPM:ReleaseUrgency>
<QPM:ReleaseStability>Stable</QPM:ReleaseStability>
<QPM:ReleaseNoteMinor></QPM:ReleaseNoteMinor>

48
trees.c
View File

@ -1,5 +1,5 @@
/* trees.c -- output deflated data using Huffman coding
* 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
*/
@ -930,8 +930,25 @@ void _tr_flush_block(s, buf, stored_len, eof)
/* Build the Huffman trees unless a stored block is forced */
if (s->level > 0) {
/* Check if the file is ascii or binary */
if (s->strm->data_type == Z_UNKNOWN) set_data_type(s);
/* Check if the file is binary or text */
if (stored_len > 0 && s->strm->data_type == Z_UNKNOWN)
set_data_type(s);
#ifdef DEBUG
/* Write out literal/length frequencies for benchmarking */
if (z_verbose) {
FILE *freq;
freq = fopen("defreq.txt", "a");
if (freq != NULL) {
int n;
fputs("ltree:", freq);
for (n = 0; n < L_CODES; n++)
fprintf(freq, " %d", s->dyn_ltree[n].Freq);
putc('\n', freq);
fclose(freq);
}
}
#endif
/* Construct the literal and distance trees */
build_tree(s, (tree_desc *)(&(s->l_desc)));
@ -1117,21 +1134,24 @@ local void compress_block(s, ltree, dtree)
}
/* ===========================================================================
* Set the data type to ASCII or BINARY, using a crude approximation:
* binary if more than 20% of the bytes are <= 6 or >= 128, ascii otherwise.
* IN assertion: the fields freq of dyn_ltree are set and the total of all
* frequencies does not exceed 64K (to fit in an int on 16 bit machines).
* Set the data type to BINARY or TEXT, using a crude approximation:
* set it to Z_TEXT if all symbols are either printable characters (33 to 255)
* or white spaces (9 to 13, or 32); or set it to Z_BINARY otherwise.
* IN assertion: the fields Freq of dyn_ltree are set.
*/
local void set_data_type(s)
deflate_state *s;
{
int n = 0;
unsigned ascii_freq = 0;
unsigned bin_freq = 0;
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->strm->data_type = bin_freq > (ascii_freq >> 2) ? Z_BINARY : Z_ASCII;
int n;
for (n = 0; n < 9; n++)
if (s->dyn_ltree[n].Freq != 0)
break;
if (n == 9)
for (n = 14; n < 32; n++)
if (s->dyn_ltree[n].Freq != 0)
break;
s->strm->data_type = (n == 32) ? Z_TEXT : Z_BINARY;
}
/* ===========================================================================

89
win32/DLL_FAQ.txt
View File

@ -175,7 +175,7 @@ in the zlib distribution, or at the following location:
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
On the other hand, the pre- .NET versions of Microsoft Visual
Basic require STDCALL, while Borland Delphi prefers, although
it does not require, FASTCALL.
@ -203,10 +203,10 @@ in the zlib distribution, or at the following location:
zlib distribution.
8. I need to use zlib in my Microsoft .Net project. What can I
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
- Henrik Ravn has contributed a .NET wrapper around zlib. Look
into contrib/dotzlib/, inside the zlib distribution.
@ -225,8 +225,8 @@ in the zlib distribution, or at the following location:
depend on it should also be linked to MSVCRT.DLL.
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
10. Why are you saying that ZLIB1.DLL and my application should
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),
and everything works fine.
@ -277,12 +277,6 @@ in the zlib distribution, or at the following location:
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
are producing executables that link to MSVCRT.DLL by default,
without offering other dynamic CRTs as alternatives easy to
select by users.
12. Why are you not linking ZLIB1.DLL to
<<my favorite C run-time library>> ?
@ -295,27 +289,60 @@ in the zlib distribution, or at the following location:
to a static C library, you may as well consider linking zlib
in statically, too.
* Linking ZLIB1.DLL to CRTDLL.DLL looks very appealing,
because CRTDLL.DLL is present on every Win32 installation.
Unfortunately, it has a series of problems: it raises
difficulties when using it with C++ code, it does not work
with 64-bit file offsets, (and so on...), and Microsoft
discontinued its support a long time ago.
* Linking ZLIB1.DLL to CRTDLL.DLL looks appealing, because
CRTDLL.DLL is present on every Win32 installation.
Unfortunately, it has a series of problems: it does not
work properly with Microsoft's C++ libraries, it does not
provide support for 64-bit file offsets, (and so on...),
and Microsoft discontinued its support a long time ago.
* Linking ZLIB1.DLL to MSVCR70.DLL, supplied with the
Microsoft .NET platform and Visual C++ 7.0 or newer, is not
a good option. Although it is available for free download
and distribution, its presence is scarce on today's Win32
installations. If it will ever become more popular than
MSVCRT.DLL and will be pre-installed on the future Win32
systems, we will probably think again about it.
* Linking ZLIB1.DLL to MSVCR70.DLL or MSVCR71.DLL, supplied
with the Microsoft .NET platform, and Visual C++ 7.0/7.1,
raises problems related to the status of ZLIB1.DLL as a
system component. According to the Microsoft Knowledge Base
article KB326922 "INFO: Redistribution of the Shared C
Runtime Component in Visual C++ .NET", MSVCR70.DLL and
MSVCR71.DLL are not supposed to function as system DLLs,
because they may clash with MSVCRT.DLL. Instead, the
application's installer is supposed to put these DLLs
(if needed) in the application's private directory.
If ZLIB1.DLL depends on a non-system runtime, it cannot
function as a redistributable system component.
* Linking ZLIB1.DLL to NTDLL.DLL is not possible.
NTDLL.DLL exports only a part of the C library, and only on
Windows NT systems.
* Linking ZLIB1.DLL to non-Microsoft runtimes, such as
Borland's, or Cygwin's, raises problems related to the
reliable presence of these runtimes on Win32 systems.
It's easier to let the DLL build of zlib up to the people
who distribute these runtimes, and who may proceed as
explained in the answer to Question 14.
13. I need to link my own DLL build to a CRT different than
13. If ZLIB1.DLL cannot be linked to MSVCR70.DLL or MSVCR71.DLL,
how can I build/use ZLIB1.DLL in Microsoft Visual C++ 7.0
(Visual Studio .NET) or newer?
- Due to the problems explained in the Microsoft Knowledge Base
article KB326922 (see the previous answer), the C runtime that
comes with the VC7 environment is no longer considered a
system component. That is, it should not be assumed that this
runtime exists, or may be installed in a system directory.
Since ZLIB1.DLL is supposed to be a system component, it may
not depend on a non-system component.
In order to link ZLIB1.DLL and your application to MSVCRT.DLL
in VC7, you need the library of Visual C++ 6.0 or older. If
you don't have this library at hand, it's probably best not to
use ZLIB1.DLL.
We are hoping that, in the future, Microsoft will provide a
way to build applications linked to a proper system runtime,
from the Visual C++ environment. Until then, you have a
couple of alternatives, such as linking zlib in statically.
If your application requires dynamic linking, you may proceed
as explained in the answer to Question 14.
14. 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
@ -331,7 +358,7 @@ in the zlib distribution, or at the following location:
CYGWIN1.DLL, and it is distributed under the name CYGZ.DLL.
14. May I include additional pieces of code that I find useful,
15. 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
@ -344,7 +371,7 @@ in the zlib distribution, or at the following location:
is a redistributable file, named VCLxx.DLL.
15. May I remove some functionality out of ZLIB1.DLL, by enabling
16. 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
@ -353,7 +380,7 @@ in the zlib distribution, or at the following location:
different file name, as suggested in the previous answer.
16. I made my own ZLIB1.DLL build. Can I test it for compliance?
17. 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

8
win32/zlib1.rc
View File

@ -5,8 +5,8 @@ VS_VERSION_INFO VERSIONINFO
#else
VS_VERSION_INFO VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE
#endif
FILEVERSION 1,2,2
PRODUCTVERSION 1,2,2
FILEVERSION 1,2,2,1
PRODUCTVERSION 1,2,2,1
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", "1.2.2\0"
VALUE "FileVersion", "1.2.2.1\0"
VALUE "InternalName", "zlib1.dll\0"
VALUE "LegalCopyright", "(C) 1995-2004 Jean-loup Gailly & Mark Adler\0"
VALUE "OriginalFilename", "zlib1.dll\0"
VALUE "ProductName", "zlib\0"
VALUE "ProductVersion", "1.2.2\0"
VALUE "ProductVersion", "1.2.2.1\0"
VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
END
END

4
zconf.h
View File

@ -43,6 +43,10 @@
# define get_crc_table z_get_crc_table
# define zError z_zError
# define alloc_func z_alloc_func
# define free_func z_free_func
# define in_func z_in_func
# define out_func z_out_func
# define Byte z_Byte
# define uInt z_uInt
# define uLong z_uLong

4
zconf.in.h
View File

@ -43,6 +43,10 @@
# define get_crc_table z_get_crc_table
# define zError z_zError
# define alloc_func z_alloc_func
# define free_func z_free_func
# define in_func z_in_func
# define out_func z_out_func
# define Byte z_Byte
# define uInt z_uInt
# define uLong z_uLong

4
zlib.3
View File

@ -1,4 +1,4 @@
.TH ZLIB 3 "3 October 2004"
.TH ZLIB 3 "31 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 1.2.2
Version 1.2.2.1
Copyright (C) 1995-2004 Jean-loup Gailly (jloup@gzip.org)
and Mark Adler (madler@alumni.caltech.edu).
.LP

157
zlib.h
View File

@ -1,5 +1,5 @@
/* zlib.h -- interface of the 'zlib' general purpose compression library
version 1.2.2, October 3rd, 2004
version 1.2.2.1, October 31st, 2004
Copyright (C) 1995-2004 Jean-loup Gailly and Mark Adler
@ -37,8 +37,8 @@
extern "C" {
#endif
#define ZLIB_VERSION "1.2.2"
#define ZLIB_VERNUM 0x1220
#define ZLIB_VERSION "1.2.2.1"
#define ZLIB_VERNUM 0x1221
/*
The 'zlib' compression library provides in-memory compression and
@ -95,13 +95,36 @@ typedef struct z_stream_s {
free_func zfree; /* used to free the internal state */
voidpf opaque; /* private data object passed to zalloc and zfree */
int data_type; /* best guess about the data type: ascii or binary */
int data_type; /* best guess about the data type: binary or text */
uLong adler; /* adler32 value of the uncompressed data */
uLong reserved; /* reserved for future use */
} z_stream;
typedef z_stream FAR *z_streamp;
/*
gzip header information passed to and from zlib routines. See RFC 1952
for more details on the meanings of these fields.
*/
typedef struct gz_header_s {
int text; /* true if compressed data believed to be text */
uLong time; /* modification time */
int xflags; /* extra flags (not used when writing a gzip file) */
int os; /* operating system */
Bytef *extra; /* pointer to extra field or Z_NULL if none */
uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
uInt extra_max; /* space at extra (only when reading header) */
Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
uInt name_max; /* space at name (only when reading header) */
Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
uInt comm_max; /* space at comment (only when reading header) */
int hcrc; /* true if there was or will be a header crc */
int done; /* true when done reading gzip header (not used
when writing a gzip file) */
} gz_header;
typedef gz_header FAR *gz_headerp;
/*
The application must update next_in and avail_in when avail_in has
dropped to zero. It must update next_out and avail_out when avail_out
@ -170,7 +193,8 @@ typedef z_stream FAR *z_streamp;
/* compression strategy; see deflateInit2() below for details */
#define Z_BINARY 0
#define Z_ASCII 1
#define Z_TEXT 1
#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
#define Z_UNKNOWN 2
/* Possible values of the data_type field (though see inflate()) */
@ -244,6 +268,10 @@ ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
and with zero avail_out, it must be called again after making room in the
output buffer because there might be more output pending.
Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
decide how much data to accumualte before producing output, in order to
maximize compression.
If the parameter flush is set to Z_SYNC_FLUSH, 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
@ -255,7 +283,7 @@ ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
Z_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 Z_FULL_FLUSH too often can seriously degrade
the compression.
compression.
If deflate returns with avail_out == 0, this function must be called again
with the same value of the flush parameter and more output space (updated
@ -280,8 +308,8 @@ ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
deflate() sets strm->adler to the adler32 checksum of all input read
so far (that is, total_in bytes).
deflate() may update data_type if it can make a good guess about
the input data type (Z_ASCII or Z_BINARY). In doubt, the data is considered
deflate() may update strm->data_type if it can make a good guess about
the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered
binary. This field is only for information purposes and does not affect
the compression algorithm in any manner.
@ -616,6 +644,30 @@ ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
stream state was inconsistent.
*/
ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
gz_headerp head));
/*
deflateSetHeader() provides gzip header information for when a gzip
stream is requested by deflateInit2(). deflateSetHeader() may be called
after deflateInit2() or deflateReset() and before the first call of
deflate(). The text, time, os, extra field, name, and comment information
in the provided gz_header structure are written to the gzip header (xflag is
ignored -- the extra flags are set according to the compression level). The
caller must assure that, if not Z_NULL, name and comment are terminated with
a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
available there. If hcrc is true, a gzip header crc is included. Note that
the current versions of the command-line version of gzip (up through version
1.3.x) do not support header crc's, and will report that it is a "multi-part
gzip file" and give up.
If deflateSetHeader is not used, the default gzip header has text false,
the time set to zero, and os set to 255, with no extra, name, or comment
fields. The gzip header is returned to the default state by deflateReset().
deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
/*
ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
int windowBits));
@ -664,11 +716,14 @@ ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
uInt dictLength));
/*
Initializes the decompression dictionary from the given uncompressed byte
sequence. This function must be called immediately after a call of inflate
if this call returned Z_NEED_DICT. The dictionary chosen by the compressor
can be determined from the adler32 value returned by this call of
inflate. The compressor and decompressor must use exactly the same
dictionary (see deflateSetDictionary).
sequence. This function must be called immediately after a call of inflate,
if that call returned Z_NEED_DICT. The dictionary chosen by the compressor
can be determined from the adler32 value returned by that call of inflate.
The compressor and decompressor must use exactly the same dictionary (see
deflateSetDictionary). For raw inflate, this function can be called
immediately after inflateInit2() or inflateReset() and before any call of
inflate() to set the dictionary. The application must insure that the
dictionary that was used for compression is provided.
inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
parameter is invalid (such as NULL dictionary) or the stream state is
@ -719,8 +774,48 @@ ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
stream state was inconsistent (such as zalloc or state being NULL).
*/
ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
gz_headerp head));
/*
ZEXTERN int ZEXPORT inflateBackInit OF((z_stream FAR *strm, int windowBits,
inflateGetHeader() requests that gzip header information be stored in the
provided gz_header structure. inflateGetHeader() may be called after
inflateInit2() or inflateReset(), and before the first call of inflate().
As inflate() processes the gzip stream, head->done is zero until the header
is completed, at which time head->done is set to one. If a zlib stream is
being decoded, then head->done is set to -1 to indicate that there will be
no gzip header information forthcoming. Note that Z_BLOCK can be used to
force inflate() to return immediately after header processing is complete
and before any actual data is decompressed.
The text, time, xflags, and os fields are filled in with the gzip header
contents. hcrc is set to true if there is a header CRC. (The header CRC
was valid if done is set to one.) If extra is not Z_NULL, then extra_max
contains the maximum number of bytes to write to extra. Once done is true,
extra_len contains the actual extra field length, and extra contains the
extra field, or that field truncated if extra_max is less than extra_len.
If name is not Z_NULL, then up to name_max characters are written there,
terminated with a zero unless the length is greater than name_max. If
comment is not Z_NULL, then up to comm_max characters are written there,
terminated with a zero unless the length is greater than comm_max. When
any of extra, name, or comment are not Z_NULL and the respective field is
not present in the header, then that field is set to Z_NULL to signal its
absence. This allows the use of deflateSetHeader() with the returned
structure to duplicate the header. However if those fields are set to
allocated memory, then the application will need to save those pointers
elsewhere so that they can be eventually freed.
If inflateGetHeader is not used, then the header information is simply
discarded. The header is always checked for validity, including the header
CRC if present. inflateReset() will reset the process to discard the header
information. The application would need to call inflateGetHeader() again to
retrieve the header from the next gzip stream.
inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
/*
ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
unsigned char FAR *window));
Initialize the internal stream state for decompression using inflateBack()
@ -744,7 +839,7 @@ ZEXTERN int ZEXPORT inflateBackInit OF((z_stream FAR *strm, int windowBits,
typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));
typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
ZEXTERN int ZEXPORT inflateBack OF((z_stream FAR *strm,
ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
in_func in, void FAR *in_desc,
out_func out, void FAR *out_desc));
/*
@ -813,7 +908,7 @@ ZEXTERN int ZEXPORT inflateBack OF((z_stream FAR *strm,
that inflateBack() cannot return Z_OK.
*/
ZEXTERN int ZEXPORT inflateBackEnd OF((z_stream FAR *strm));
ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
/*
All memory allocated by inflateBackInit() is freed.
@ -1119,7 +1214,6 @@ ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
*/
ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
/*
Update a running Adler-32 checksum with the bytes buf[0..len-1] and
return the updated checksum. If buf is NULL, this function returns
@ -1135,12 +1229,21 @@ ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
if (adler != original_adler) error();
*/
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
uLong len2));
/*
Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of
seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.
*/
ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
/*
Update a running crc with the bytes buf[0..len-1] and return the updated
crc. If buf is NULL, this function returns the required initial value
for the crc. Pre- and post-conditioning (one's complement) is performed
within this function so it shouldn't be done by the application.
Update a running CRC-32 with the bytes buf[0..len-1] and return the
updated CRC-32. If buf is NULL, this function returns the required initial
value for the for the crc. Pre- and post-conditioning (one's complement) is
performed within this function so it shouldn't be done by the application.
Usage example:
uLong crc = crc32(0L, Z_NULL, 0);
@ -1151,6 +1254,16 @@ ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
if (crc != original_crc) error();
*/
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, uLong len2));
/*
Combine two CRC-32 check values into one. For two sequences of bytes,
seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32
check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
len2.
*/
/* various hacks, don't look :) */
@ -1167,7 +1280,7 @@ ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
int stream_size));
ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
const char *version, int stream_size));
ZEXTERN int ZEXPORT inflateBackInit_ OF((z_stream FAR *strm, int windowBits,
ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
unsigned char FAR *window,
const char *version,
int stream_size));

6
zutil.c
View File

@ -1,5 +1,5 @@
/* zutil.c -- target dependent utility functions for the 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
*/
@ -11,10 +11,6 @@
struct internal_state {int dummy;}; /* for buggy compilers */
#endif
#ifndef STDC
extern void exit OF((int));
#endif
const char * const z_errmsg[10] = {
"need dictionary", /* Z_NEED_DICT 2 */
"stream end", /* Z_STREAM_END 1 */

2
zutil.h
View File

@ -1,5 +1,5 @@
/* zutil.h -- internal interface and configuration of the 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
*/