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Commit 041167b2 authored by Alexandre Julliard's avatar Alexandre Julliard
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zlib: Import upstream release 1.3.1.

parent 73a8c068
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Showing with 107 additions and 66 deletions
libs/zlib/deflate.c
View file @ 041167b2
/* deflate.c -- compress data using the deflation algorithm
* Copyright (C) 1995-2023 Jean-loup Gailly and Mark Adler
* Copyright (C) 1995-2024 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 1.3 Copyright 1995-2023 Jean-loup Gailly and Mark Adler ";
" deflate 1.3.1 Copyright 1995-2024 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
......@@ -493,7 +493,7 @@ int ZEXPORT deflateInit2_(z_streamp strm, int level, int method,
* symbols from which it is being constructed.
*/
s->pending_buf = (uchf *) ZALLOC(strm, s->lit_bufsize, 4);
s->pending_buf = (uchf *) ZALLOC(strm, s->lit_bufsize, LIT_BUFS);
s->pending_buf_size = (ulg)s->lit_bufsize * 4;
if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
......@@ -503,8 +503,14 @@ int ZEXPORT deflateInit2_(z_streamp strm, int level, int method,
deflateEnd (strm);
return Z_MEM_ERROR;
}
#ifdef LIT_MEM
s->d_buf = (ushf *)(s->pending_buf + (s->lit_bufsize << 1));
s->l_buf = s->pending_buf + (s->lit_bufsize << 2);
s->sym_end = s->lit_bufsize - 1;
#else
s->sym_buf = s->pending_buf + s->lit_bufsize;
s->sym_end = (s->lit_bufsize - 1) * 3;
#endif
/* We avoid equality with lit_bufsize*3 because of wraparound at 64K
* on 16 bit machines and because stored blocks are restricted to
* 64K-1 bytes.
......@@ -720,9 +726,15 @@ int ZEXPORT deflatePrime(z_streamp strm, int bits, int value) {
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
s = strm->state;
#ifdef LIT_MEM
if (bits < 0 || bits > 16 ||
(uchf *)s->d_buf < s->pending_out + ((Buf_size + 7) >> 3))
return Z_BUF_ERROR;
#else
if (bits < 0 || bits > 16 ||
s->sym_buf < s->pending_out + ((Buf_size + 7) >> 3))
return Z_BUF_ERROR;
#endif
do {
put = Buf_size - s->bi_valid;
if (put > bits)
......@@ -1294,7 +1306,7 @@ int ZEXPORT deflateCopy(z_streamp dest, z_streamp source) {
ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos));
ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos));
ds->pending_buf = (uchf *) ZALLOC(dest, ds->lit_bufsize, 4);
ds->pending_buf = (uchf *) ZALLOC(dest, ds->lit_bufsize, LIT_BUFS);
if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
ds->pending_buf == Z_NULL) {
......@@ -1305,10 +1317,15 @@ int ZEXPORT deflateCopy(z_streamp dest, z_streamp source) {
zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos));
zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos));
zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
zmemcpy(ds->pending_buf, ss->pending_buf, ds->lit_bufsize * LIT_BUFS);
ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
#ifdef LIT_MEM
ds->d_buf = (ushf *)(ds->pending_buf + (ds->lit_bufsize << 1));
ds->l_buf = ds->pending_buf + (ds->lit_bufsize << 2);
#else
ds->sym_buf = ds->pending_buf + ds->lit_bufsize;
#endif
ds->l_desc.dyn_tree = ds->dyn_ltree;
ds->d_desc.dyn_tree = ds->dyn_dtree;
......@@ -1539,13 +1556,21 @@ local uInt longest_match(deflate_state *s, IPos cur_match) {
*/
local void check_match(deflate_state *s, IPos start, IPos match, int length) {
/* check that the match is indeed a match */
if (zmemcmp(s->window + match,
s->window + start, length) != EQUAL) {
fprintf(stderr, " start %u, match %u, length %d\n",
start, match, length);
Bytef *back = s->window + (int)match, *here = s->window + start;
IPos len = length;
if (match == (IPos)-1) {
/* match starts one byte before the current window -- just compare the
subsequent length-1 bytes */
back++;
here++;
len--;
}
if (zmemcmp(back, here, len) != EQUAL) {
fprintf(stderr, " start %u, match %d, length %d\n",
start, (int)match, length);
do {
fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
} while (--length != 0);
fprintf(stderr, "(%02x %02x)", *back++, *here++);
} while (--len != 0);
z_error("invalid match");
}
if (z_verbose > 1) {
......
libs/zlib/deflate.h
View file @ 041167b2
/* deflate.h -- internal compression state
* Copyright (C) 1995-2018 Jean-loup Gailly
* Copyright (C) 1995-2024 Jean-loup Gailly
* For conditions of distribution and use, see copyright notice in zlib.h
*/
......@@ -23,6 +23,10 @@
# define GZIP
#endif
/* define LIT_MEM to slightly increase the speed of deflate (order 1% to 2%) at
the cost of a larger memory footprint */
/* #define LIT_MEM */
/* ===========================================================================
* Internal compression state.
*/
......@@ -217,7 +221,14 @@ typedef struct internal_state {
/* Depth of each subtree used as tie breaker for trees of equal frequency
*/
#ifdef LIT_MEM
# define LIT_BUFS 5
ushf *d_buf; /* buffer for distances */
uchf *l_buf; /* buffer for literals/lengths */
#else
# define LIT_BUFS 4
uchf *sym_buf; /* buffer for distances and literals/lengths */
#endif
uInt lit_bufsize;
/* Size of match buffer for literals/lengths. There are 4 reasons for
......@@ -239,7 +250,7 @@ typedef struct internal_state {
* - I can't count above 4
*/
uInt sym_next; /* running index in sym_buf */
uInt sym_next; /* running index in symbol buffer */
uInt sym_end; /* symbol table full when sym_next reaches this */
ulg opt_len; /* bit length of current block with optimal trees */
......@@ -318,6 +329,25 @@ void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
extern const uch ZLIB_INTERNAL _dist_code[];
#endif
#ifdef LIT_MEM
# define _tr_tally_lit(s, c, flush) \
{ uch cc = (c); \
s->d_buf[s->sym_next] = 0; \
s->l_buf[s->sym_next++] = cc; \
s->dyn_ltree[cc].Freq++; \
flush = (s->sym_next == s->sym_end); \
}
# define _tr_tally_dist(s, distance, length, flush) \
{ uch len = (uch)(length); \
ush dist = (ush)(distance); \
s->d_buf[s->sym_next] = dist; \
s->l_buf[s->sym_next++] = len; \
dist--; \
s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
s->dyn_dtree[d_code(dist)].Freq++; \
flush = (s->sym_next == s->sym_end); \
}
#else
# define _tr_tally_lit(s, c, flush) \
{ uch cc = (c); \
s->sym_buf[s->sym_next++] = 0; \
......@@ -337,6 +367,7 @@ void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
s->dyn_dtree[d_code(dist)].Freq++; \
flush = (s->sym_next == s->sym_end); \
}
#endif
#else
# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
# define _tr_tally_dist(s, distance, length, flush) \
......
libs/zlib/inflate.c
View file @ 041167b2
......@@ -1387,7 +1387,7 @@ int ZEXPORT inflateSync(z_streamp strm) {
/* if first time, start search in bit buffer */
if (state->mode != SYNC) {
state->mode = SYNC;
state->hold <<= state->bits & 7;
state->hold >>= state->bits & 7;
state->bits -= state->bits & 7;
len = 0;
while (state->bits >= 8) {
......
libs/zlib/inftrees.c
View file @ 041167b2
/* inftrees.c -- generate Huffman trees for efficient decoding
* Copyright (C) 1995-2023 Mark Adler
* Copyright (C) 1995-2024 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
......@@ -9,7 +9,7 @@
#define MAXBITS 15
const char inflate_copyright[] =
" inflate 1.3 Copyright 1995-2023 Mark Adler ";
" inflate 1.3.1 Copyright 1995-2024 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
......@@ -57,7 +57,7 @@ int ZLIB_INTERNAL inflate_table(codetype type, unsigned short FAR *lens,
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, 198, 203};
19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 203, 77};
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,
......
libs/zlib/inftrees.h
View file @ 041167b2
......@@ -41,8 +41,8 @@ typedef struct {
examples/enough.c found in the zlib distribution. The arguments to that
program are the number of symbols, the initial root table size, and the
maximum bit length of a code. "enough 286 9 15" for literal/length codes
returns returns 852, and "enough 30 6 15" for distance codes returns 592.
The initial root table size (9 or 6) is found in the fifth argument of the
returns 852, and "enough 30 6 15" for distance codes returns 592. The
initial root table size (9 or 6) is found in the fifth argument of the
inflate_table() calls in inflate.c and infback.c. If the root table size is
changed, then these maximum sizes would be need to be recalculated and
updated. */
......
libs/zlib/trees.c
View file @ 041167b2
/* trees.c -- output deflated data using Huffman coding
* Copyright (C) 1995-2021 Jean-loup Gailly
* Copyright (C) 1995-2024 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
*/
......@@ -899,14 +899,19 @@ local void compress_block(deflate_state *s, const ct_data *ltree,
const ct_data *dtree) {
unsigned dist; /* distance of matched string */
int lc; /* match length or unmatched char (if dist == 0) */
unsigned sx = 0; /* running index in sym_buf */
unsigned sx = 0; /* running index in symbol buffers */
unsigned code; /* the code to send */
int extra; /* number of extra bits to send */
if (s->sym_next != 0) do {
#ifdef LIT_MEM
dist = s->d_buf[sx];
lc = s->l_buf[sx++];
#else
dist = s->sym_buf[sx++] & 0xff;
dist += (unsigned)(s->sym_buf[sx++] & 0xff) << 8;
lc = s->sym_buf[sx++];
#endif
if (dist == 0) {
send_code(s, lc, ltree); /* send a literal byte */
Tracecv(isgraph(lc), (stderr," '%c' ", lc));
......@@ -931,8 +936,12 @@ local void compress_block(deflate_state *s, const ct_data *ltree,
}
} /* literal or match pair ? */
/* Check that the overlay between pending_buf and sym_buf is ok: */
/* Check for no overlay of pending_buf on needed symbols */
#ifdef LIT_MEM
Assert(s->pending < 2 * (s->lit_bufsize + sx), "pendingBuf overflow");
#else
Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow");
#endif
} while (sx < s->sym_next);
......@@ -1082,9 +1091,14 @@ void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, charf *buf,
* the current block must be flushed.
*/
int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc) {
#ifdef LIT_MEM
s->d_buf[s->sym_next] = (ush)dist;
s->l_buf[s->sym_next++] = (uch)lc;
#else
s->sym_buf[s->sym_next++] = (uch)dist;
s->sym_buf[s->sym_next++] = (uch)(dist >> 8);
s->sym_buf[s->sym_next++] = (uch)lc;
#endif
if (dist == 0) {
/* lc is the unmatched char */
s->dyn_ltree[lc].Freq++;
......
libs/zlib/zconf.h
View file @ 041167b2
/* zconf.h -- configuration of the zlib compression library
* Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
* Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
......@@ -300,14 +300,6 @@
# endif
#endif
#ifndef Z_ARG /* function prototypes for stdarg */
# if defined(STDC) || defined(Z_HAVE_STDARG_H)
# define Z_ARG(args) args
# else
# define Z_ARG(args) ()
# endif
#endif
/* The following definitions for FAR are needed only for MSDOS mixed
* model programming (small or medium model with some far allocations).
* This was tested only with MSC; for other MSDOS compilers you may have
......
libs/zlib/zlib.h
View file @ 041167b2
/* zlib.h -- interface of the 'zlib' general purpose compression library
version 1.3, August 18th, 2023
version 1.3.1, January 22nd, 2024
Copyright (C) 1995-2023 Jean-loup Gailly and Mark Adler
Copyright (C) 1995-2024 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
......@@ -37,11 +37,11 @@
extern "C" {
#endif
#define ZLIB_VERSION "1.3"
#define ZLIB_VERNUM 0x1300
#define ZLIB_VERSION "1.3.1"
#define ZLIB_VERNUM 0x1310
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 3
#define ZLIB_VER_REVISION 0
#define ZLIB_VER_REVISION 1
#define ZLIB_VER_SUBREVISION 0
/*
......@@ -936,10 +936,10 @@ ZEXTERN int ZEXPORT inflateSync(z_streamp strm);
inflateSync returns Z_OK if a possible full flush point has been found,
Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point
has been found, or Z_STREAM_ERROR if the stream structure was inconsistent.
In the success case, the application may save the current current value of
total_in which indicates where valid compressed data was found. In the
error case, the application may repeatedly call inflateSync, providing more
input each time, until success or end of the input data.
In the success case, the application may save the current value of total_in
which indicates where valid compressed data was found. In the error case,
the application may repeatedly call inflateSync, providing more input each
time, until success or end of the input data.
*/
ZEXTERN int ZEXPORT inflateCopy(z_streamp dest,
......@@ -1758,14 +1758,14 @@ ZEXTERN uLong ZEXPORT crc32_combine(uLong crc1, uLong crc2, z_off_t len2);
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.
len2. len2 must be non-negative.
*/
/*
ZEXTERN uLong ZEXPORT crc32_combine_gen(z_off_t len2);
Return the operator corresponding to length len2, to be used with
crc32_combine_op().
crc32_combine_op(). len2 must be non-negative.
*/
ZEXTERN uLong ZEXPORT crc32_combine_op(uLong crc1, uLong crc2, uLong op);
......
libs/zlib/zutil.h
View file @ 041167b2
/* zutil.h -- internal interface and configuration of the compression library
* Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler
* Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
......@@ -56,7 +56,7 @@ typedef unsigned long ulg;
extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
/* (size given to avoid silly warnings with Visual C++) */
#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
#define ERR_MSG(err) z_errmsg[(err) < -6 || (err) > 2 ? 9 : 2 - (err)]
#define ERR_RETURN(strm,err) \
return (strm->msg = ERR_MSG(err), (err))
......@@ -137,17 +137,8 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
# endif
#endif
#if defined(MACOS) || defined(TARGET_OS_MAC)
#if defined(MACOS)
# define OS_CODE 7
# ifndef Z_SOLO
# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
# include <unix.h> /* for fdopen */
# else
# ifndef fdopen
# define fdopen(fd,mode) NULL /* No fdopen() */
# endif
# endif
# endif
#endif
#ifdef __acorn
......@@ -170,18 +161,6 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
# define OS_CODE 19
#endif
#if defined(_BEOS_) || defined(RISCOS)
# define fdopen(fd,mode) NULL /* No fdopen() */
#endif
#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
# if defined(_WIN32_WCE)
# define fdopen(fd,mode) NULL /* No fdopen() */
# else
# define fdopen(fd,type) _fdopen(fd,type)
# endif
#endif
#if defined(__BORLANDC__) && !defined(MSDOS)
#pragma warn -8004
#pragma warn -8008
......
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