https://zlib.net/zlib_license.html
/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.2.12, March 27th, 2022
+ version 1.2.13, October 13th, 2022
Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
https://zlib.net/zlib_license.html
/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.2.12, March 27th, 2022
+ version 1.2.13, October 13th, 2022
Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
"Type": "git",
"Git": {
"RepositoryUrl": "https://github.com/madler/zlib",
- "CommitHash": "21767c654d31d2dccdde4330529775c6c5fd5389"
+ "CommitHash": "04f42ceca40f73e2978b50e93806c2a18c1281fc"
}
},
"DevelopmentDependency": false
"Component": {
"Type": "git",
"Git": {
- "RepositoryUrl": "https://github.com/jtkukunas/zlib",
- "CommitHash": "bf55d56b068467329f5a6f29bee31bc80d694023"
+ "RepositoryUrl": "https://github.com/intel/zlib",
+ "CommitHash": "6160a8f20c3626aec2f8b0fda5bf2e65bfe31781"
}
},
"DevelopmentDependency": false
-v1.2.12_jtk.1
-(bf55d56b068467329f5a6f29bee31bc80d694023)
+v1.2.13_jtk
+(6160a8f20c3626aec2f8b0fda5bf2e65bfe31781)
-https://github.com/jtkukunas/zlib/releases/tag/v1.2.12_jtk.1
+https://github.com/intel/zlib/releases/tag/v1.2.13_jtk
Note: This library does not use a standard release lifecycle.
- We're pointing to the latest available tagged version at the time we forked the code.
-
-We have also cherry-picked into our local copy:
-https://github.com/madler/zlib/commit/7ecf7c7458578d05a20fa481436dd5c58db112f7
-
-And applied by hand the deflate_quick.c change from this commit:
-https://github.com/dotnet/runtime/commit/60f6129b3eaef088f4b1ddc30d3320a68f396d85
+ We're pointing to the latest available tagged version as of this writing.
+
+We do not pull in every file from the intel/zlib repo. Instead, some years ago,
+somebody determined what they believed was the minimum set that needed to be
+copied into our repo in order to build. Since then, we've just updated only
+those files in-place, ignoring other files in the intel/zlib repo. If new files
+are introduced which are necessary for building the product, feel free to bring
+those down as well.
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
Z_STREAM_ERROR if the level parameter is invalid.
*/
-int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
+int ZEXPORT compress2(dest, destLen, source, sourceLen, level)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
/* ===========================================================================
*/
-int ZEXPORT compress (dest, destLen, source, sourceLen)
+int ZEXPORT compress(dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
If the default memLevel or windowBits for deflateInit() is changed, then
this function needs to be updated.
*/
-uLong ZEXPORT compressBound (sourceLen)
+uLong ZEXPORT compressBound(sourceLen)
uLong sourceLen;
{
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
# endif
#endif
+/* If available, use the ARM processor CRC32 instruction. */
+#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
+# define ARMCRC32
+#endif
+
/* Local functions. */
local z_crc_t multmodp OF((z_crc_t a, z_crc_t b));
local z_crc_t x2nmodp OF((z_off64_t n, unsigned k));
-/* If available, use the ARM processor CRC32 instruction. */
-#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
-# define ARMCRC32
+#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
+ local z_word_t byte_swap OF((z_word_t word));
+#endif
+
+#if defined(W) && !defined(ARMCRC32)
+ local z_crc_t crc_word OF((z_word_t data));
+ local z_word_t crc_word_big OF((z_word_t data));
#endif
#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
len &= 7;
/* Do three interleaved CRCs to realize the throughput of one crc32x
- instruction per cycle. Each CRC is calcuated on Z_BATCH words. The three
- CRCs are combined into a single CRC after each set of batches. */
+ instruction per cycle. Each CRC is calculated on Z_BATCH words. The
+ three CRCs are combined into a single CRC after each set of batches. */
while (num >= 3 * Z_BATCH) {
crc1 = 0;
crc2 = 0;
}
/* ========================================================================= */
-uLong crc32_combine_op(crc1, crc2, op)
+uLong ZEXPORT crc32_combine_op(crc1, crc2, op)
uLong crc1;
uLong crc2;
uLong op;
#include "deflate.h"
const char deflate_copyright[] =
- " deflate 1.2.12.1 Copyright 1995-2022 Jean-loup Gailly and Mark Adler ";
+ " deflate 1.2.13 Copyright 1995-2022 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
local void lm_init OF((deflate_state *s));
local void putShortMSB OF((deflate_state *s, uInt b));
local unsigned read_buf OF((z_streamp strm, Bytef *buf, unsigned size));
+ZLIB_INTERNAL void fill_window(deflate_state *s);
/* ===========================================================================
/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */
#define RANK(f) (((f) * 2) - ((f) > 4 ? 9 : 0))
+/* ===========================================================================
+ * Insert string str in the dictionary and set match_head to the previous head
+ * of the hash chain (the most recent string with same hash key). Return
+ * the previous length of the hash chain.
+ * If this file is compiled with -DFASTEST, the compression level is forced
+ * to 1, and no hash chains are maintained.
+ * IN assertion: all calls to INSERT_STRING are made with consecutive input
+ * characters and the first MIN_MATCH bytes of str are valid (except for
+ * the last MIN_MATCH-1 bytes of the input file).
+ */
+#ifdef FASTEST
+#define INSERT_STRING(s, str, match_head) \
+ (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+ match_head = s->head[s->ins_h], \
+ s->head[s->ins_h] = (Pos)(str))
+#else
+#define INSERT_STRING(s, str, match_head) \
+ (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+ match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \
+ s->head[s->ins_h] = (Pos)(str))
+#endif
/* ===========================================================================
* Initialize the hash table (avoiding 64K overflow for 16 bit systems).
*/
#define CLEAR_HASH(s) \
do { \
- s->head[s->hash_size-1] = NIL; \
+ s->head[s->hash_size - 1] = NIL; \
zmemzero((Bytef *)s->head, \
- (unsigned)(s->hash_size-1)*sizeof(*s->head)); \
+ (unsigned)(s->hash_size - 1)*sizeof(*s->head)); \
} while (0)
/* ===========================================================================
if (windowBits < 0) { /* suppress zlib wrapper */
wrap = 0;
+ if (windowBits < -15)
+ return Z_STREAM_ERROR;
windowBits = -windowBits;
}
#ifdef GZIP
s->hash_bits = (uInt)memLevel + 7;
s->hash_size = 1 << s->hash_bits;
s->hash_mask = s->hash_size - 1;
- s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
+ s->hash_shift = ((s->hash_bits + MIN_MATCH-1) / MIN_MATCH);
#if defined(USE_PCLMUL_CRC)
window_padding = 8;
* sym_buf value to read moves forward three bytes. From that symbol, up to
* 31 bits are written to pending_buf. The closest the written pending_buf
* bits gets to the next sym_buf symbol to read is just before the last
- * code is written. At that time, 31*(n-2) bits have been written, just
- * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at
- * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1
+ * code is written. At that time, 31*(n - 2) bits have been written, just
+ * after 24*(n - 2) bits have been consumed from sym_buf. sym_buf starts at
+ * 8*n bits into pending_buf. (Note that the symbol buffer fills when n - 1
* symbols are written.) The closest the writing gets to what is unread is
- * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and
+ * then n + 14 bits. Here n is lit_bufsize, which is 16384 by default, and
* can range from 128 to 32768.
*
* Therefore, at a minimum, there are 142 bits of space between what is
/* =========================================================================
* Check for a valid deflate stream state. Return 0 if ok, 1 if not.
*/
-local int deflateStateCheck (strm)
+local int deflateStateCheck(strm)
z_streamp strm;
{
deflate_state *s;
}
/* ========================================================================= */
-int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
+int ZEXPORT deflateSetDictionary(strm, dictionary, dictLength)
z_streamp strm;
const Bytef *dictionary;
uInt dictLength;
}
/* ========================================================================= */
-int ZEXPORT deflateGetDictionary (strm, dictionary, dictLength)
+int ZEXPORT deflateGetDictionary(strm, dictionary, dictLength)
z_streamp strm;
Bytef *dictionary;
uInt *dictLength;
}
/* ========================================================================= */
-int ZEXPORT deflateResetKeep (strm)
+int ZEXPORT deflateResetKeep(strm)
z_streamp strm;
{
deflate_state *s;
}
/* ========================================================================= */
-int ZEXPORT deflateReset (strm)
+int ZEXPORT deflateReset(strm)
z_streamp strm;
{
int ret;
}
/* ========================================================================= */
-int ZEXPORT deflateSetHeader (strm, head)
+int ZEXPORT deflateSetHeader(strm, head)
z_streamp strm;
gz_headerp head;
{
}
/* ========================================================================= */
-int ZEXPORT deflatePending (strm, pending, bits)
+int ZEXPORT deflatePending(strm, pending, bits)
unsigned *pending;
int *bits;
z_streamp strm;
}
/* ========================================================================= */
-int ZEXPORT deflatePrime (strm, bits, value)
+int ZEXPORT deflatePrime(strm, bits, value)
z_streamp strm;
int bits;
int value;
}
/* =========================================================================
- * For the default windowBits of 15 and memLevel of 8, this function returns
- * a close to exact, as well as small, upper bound on the compressed size.
- * They are coded as constants here for a reason--if the #define's are
- * changed, then this function needs to be changed as well. The return
- * value for 15 and 8 only works for those exact settings.
+ * For the default windowBits of 15 and memLevel of 8, this function returns a
+ * close to exact, as well as small, upper bound on the compressed size. This
+ * is an expansion of ~0.03%, plus a small constant.
+ *
+ * For any setting other than those defaults for windowBits and memLevel, one
+ * of two worst case bounds is returned. This is at most an expansion of ~4% or
+ * ~13%, plus a small constant.
*
- * For any setting other than those defaults for windowBits and memLevel,
- * the value returned is a conservative worst case for the maximum expansion
- * resulting from using fixed blocks instead of stored blocks, which deflate
- * can emit on compressed data for some combinations of the parameters.
+ * Both the 0.03% and 4% derive from the overhead of stored blocks. The first
+ * one is for stored blocks of 16383 bytes (memLevel == 8), whereas the second
+ * is for stored blocks of 127 bytes (the worst case memLevel == 1). The
+ * expansion results from five bytes of header for each stored block.
*
- * This function could be more sophisticated to provide closer upper bounds for
- * every combination of windowBits and memLevel. But even the conservative
- * upper bound of about 14% expansion does not seem onerous for output buffer
- * allocation.
+ * The larger expansion of 13% results from a window size less than or equal to
+ * the symbols buffer size (windowBits <= memLevel + 7). In that case some of
+ * the data being compressed may have slid out of the sliding window, impeding
+ * a stored block from being emitted. Then the only choice is a fixed or
+ * dynamic block, where a fixed block limits the maximum expansion to 9 bits
+ * per 8-bit byte, plus 10 bits for every block. The smallest block size for
+ * which this can occur is 255 (memLevel == 2).
+ *
+ * Shifts are used to approximate divisions, for speed.
*/
uLong ZEXPORT deflateBound(strm, sourceLen)
z_streamp strm;
uLong sourceLen;
{
deflate_state *s;
- uLong complen, wraplen;
+ uLong fixedlen, storelen, wraplen;
+
+ /* upper bound for fixed blocks with 9-bit literals and length 255
+ (memLevel == 2, which is the lowest that may not use stored blocks) --
+ ~13% overhead plus a small constant */
+ fixedlen = sourceLen + (sourceLen >> 3) + (sourceLen >> 8) +
+ (sourceLen >> 9) + 4;
- /* conservative upper bound for compressed data */
- complen = sourceLen +
- ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5;
+ /* upper bound for stored blocks with length 127 (memLevel == 1) --
+ ~4% overhead plus a small constant */
+ storelen = sourceLen + (sourceLen >> 5) + (sourceLen >> 7) +
+ (sourceLen >> 11) + 7;
- /* if can't get parameters, return conservative bound plus zlib wrapper */
+ /* if can't get parameters, return larger bound plus a zlib wrapper */
if (deflateStateCheck(strm))
- return complen + 6;
+ return (fixedlen > storelen ? fixedlen : storelen) + 6;
/* compute wrapper length */
s = strm->state;
wraplen = 6;
}
- /* if not default parameters, return conservative bound */
+ /* if not default parameters, return one of the conservative bounds */
if (s->w_bits != 15 || s->hash_bits != 8 + 7)
- return complen + wraplen;
+ return (s->w_bits <= s->hash_bits ? fixedlen : storelen) + wraplen;
- /* default settings: return tight bound for that case */
+ /* default settings: return tight bound for that case -- ~0.03% overhead
+ plus a small constant */
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
(sourceLen >> 25) + 13 - 6 + wraplen;
}
* IN assertion: the stream state is correct and there is enough room in
* pending_buf.
*/
-local void putShortMSB (s, b)
+local void putShortMSB(s, b)
deflate_state *s;
uInt b;
{
} while (0)
/* ========================================================================= */
-int ZEXPORT deflate (strm, flush)
+int ZEXPORT deflate(strm, flush)
z_streamp strm;
int flush;
{
s->status = BUSY_STATE;
if (s->status == INIT_STATE) {
/* zlib header */
- uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
+ uInt header = (Z_DEFLATED + ((s->w_bits - 8) << 4)) << 8;
uInt level_flags;
if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
}
/* ========================================================================= */
-int ZEXPORT deflateEnd (strm)
+int ZEXPORT deflateEnd(strm)
z_streamp strm;
{
int status;
* To simplify the source, this is not supported for 16-bit MSDOS (which
* doesn't have enough memory anyway to duplicate compression states).
*/
-int ZEXPORT deflateCopy (dest, source)
+int ZEXPORT deflateCopy(dest, source)
z_streamp dest;
z_streamp source;
{
/* ===========================================================================
* Initialize the "longest match" routines for a new zlib stream
*/
-local void lm_init (s)
+local void lm_init(s)
deflate_state *s;
{
s->window_size = (ulg)2L*s->w_size;
s->match_length = s->prev_length = MIN_MATCH-1;
s->match_available = 0;
s->ins_h = 0;
-#ifndef FASTEST
-#ifdef ASMV
- match_init(); /* initialize the asm code */
-#endif
-#endif
}
#ifdef ZLIB_DEBUG
z_error("invalid match");
}
if (z_verbose > 1) {
- fprintf(stderr,"\\[%d,%d]", start-match, length);
+ fprintf(stderr,"\\[%d,%d]", start - match, length);
do { putc(s->window[start++], stderr); } while (--length != 0);
}
}
/* If the window is almost full and there is insufficient lookahead,
* move the upper half to the lower one to make room in the upper half.
*/
- if (s->strstart >= wsize+MAX_DIST(s)) {
+ if (s->strstart >= wsize + MAX_DIST(s)) {
- zmemcpy(s->window, s->window+wsize, (unsigned)wsize - more);
+ zmemcpy(s->window, s->window + wsize, (unsigned)wsize - more);
s->match_start -= wsize;
s->strstart -= wsize; /* we now have strstart >= MAX_DIST */
s->block_start -= (long) wsize;
*
* deflate_stored() is written to minimize the number of times an input byte is
* copied. It is most efficient with large input and output buffers, which
- * maximizes the opportunites to have a single copy from next_in to next_out.
+ * maximizes the opportunities to have a single copy from next_in to next_out.
*/
local block_state deflate_stored(s, flush)
deflate_state *s;
if (s->lookahead == 0) break; /* flush the current block */
}
- /* Insert the string window[strstart .. strstart+2] in the
+ /* Insert the string window[strstart .. strstart + 2] in the
* dictionary, and set hash_head to the head of the hash chain:
*/
hash_head = NIL;
s->strstart += s->match_length;
s->match_length = 0;
#ifdef USE_CRC_HASH
- if (!x86_cpu_has_sse42)
+ if (!x86_cpu_has_sse42)
#endif
- {
+ {
s->ins_h = s->window[s->strstart];
- UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+ UPDATE_HASH(s, s->ins_h, s->window[s->strstart + 1]);
#if MIN_MATCH != 3
Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
- }
+ }
/* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
* matter since it will be recomputed at next deflate call.
*/
} else {
/* No match, output a literal byte */
Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
+ _tr_tally_lit(s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
}
if (s->lookahead == 0) break; /* flush the current block */
}
- /* Insert the string window[strstart .. strstart+2] in the
+ /* Insert the string window[strstart .. strstart + 2] in the
* dictionary, and set hash_head to the head of the hash chain:
*/
hash_head = NIL;
uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
/* Do not insert strings in hash table beyond this. */
- check_match(s, s->strstart-1, s->prev_match, s->prev_length);
+ check_match(s, s->strstart - 1, s->prev_match, s->prev_length);
- _tr_tally_dist(s, s->strstart -1 - s->prev_match,
+ _tr_tally_dist(s, s->strstart - 1 - s->prev_match,
s->prev_length - MIN_MATCH, bflush);
/* Insert in hash table all strings up to the end of the match.
- * strstart-1 and strstart are already inserted. If there is not
+ * strstart - 1 and strstart are already inserted. If there is not
* enough lookahead, the last two strings are not inserted in
* the hash table.
*/
- s->lookahead -= s->prev_length-1;
+ s->lookahead -= s->prev_length - 1;
s->prev_length -= 2;
do {
if (++s->strstart <= max_insert) {
* single literal. If there was a match but the current match
* is longer, truncate the previous match to a single literal.
*/
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+ Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+ _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
if (bflush) {
FLUSH_BLOCK_ONLY(s, 0);
}
}
Assert (flush != Z_NO_FLUSH, "no flush?");
if (s->match_available) {
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+ Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+ _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
s->match_available = 0;
}
s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
if (s->match_length > s->lookahead)
s->match_length = s->lookahead;
}
- Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
+ Assert(scan <= s->window + (uInt)(s->window_size - 1),
+ "wild scan");
}
/* Emit match if have run of MIN_MATCH or longer, else emit literal */
} else {
/* No match, output a literal byte */
Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
+ _tr_tally_lit(s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
}
/* Output a literal byte */
s->match_length = 0;
Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
+ _tr_tally_lit(s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
if (bflush) FLUSH_BLOCK(s, 0);
"cmp $256 + 16, %[ax]\n\t"
"jb 1b\n\t"
-#ifdef TARGET_X86
+#ifdef X86
"movzwl -16(%[src0], %[ax]), %[dx]\n\t"
#else
"movzwq -16(%[src0], %[ax]), %[dx]\n\t"
/* extract wrap request from windowBits parameter */
if (windowBits < 0) {
+ if (windowBits < -15)
+ return Z_STREAM_ERROR;
wrap = 0;
windowBits = -windowBits;
}
if (copy > have) copy = have;
if (copy) {
if (state->head != Z_NULL &&
- state->head->extra != Z_NULL) {
- len = state->head->extra_len - state->length;
+ state->head->extra != Z_NULL &&
+ (len = state->head->extra_len - state->length) <
+ state->head->extra_max) {
zmemcpy(state->head->extra + len, next,
len + copy > state->head->extra_max ?
state->head->extra_max - len : copy);
out = left;
#ifdef USE_PCLMUL_CRC
- if ((state->wrap) & 2 && x86_cpu_has_pclmul)
+ if (state->flags > 0 && x86_cpu_has_pclmul)
strm->adler = state->check = crc_fold_512to32(state->crc);
#endif
struct inflate_state *const state = (struct inflate_state *const)strm->state;
#if !defined(NO_GZIP) && defined(USE_PCLMUL_CRC)
- if ((state->wrap & 2) && x86_cpu_has_pclmul) {
+ if (state->flags > 0 && x86_cpu_has_pclmul) {
crc_fold_copy(state->crc, dst, src, len);
return;
}
zmemcpy(dst, src, len);
#if !defined(NO_GZIP)
- if ((state->wrap & 2))
+ if (state->flags > 0)
strm->adler = state->check = crc32(state->check, dst, len);
else
#endif
- if ((state->wrap & 1))
+ if (state->flags == 0)
strm->adler = state->check = adler32(state->check, dst, len);
}
#define MAXBITS 15
const char inflate_copyright[] =
- " inflate 1.2.12.1 Copyright 1995-2022 Mark Adler ";
+ " inflate 1.2.13 Copyright 1995-2022 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
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, 76, 202};
+ 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 194, 65};
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,
/* Maximum size of the dynamic table. The maximum number of code structures is
1444, which is the sum of 852 for literal/length codes and 592 for distance
codes. These values were found by exhaustive searches using the program
- examples/enough.c found in the zlib distribtution. The arguments to that
+ 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.
local void gen_trees_header OF((void));
#endif
+#ifndef ZLIB_DEBUG
+# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
+ /* Send a code of the given tree. c and tree must not have side effects */
+
+#else /* !ZLIB_DEBUG */
+# define send_code(s, c, tree) \
+ { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
+ send_bits(s, tree[c].Code, tree[c].Len); }
+#endif
+
+/* ===========================================================================
+ * Output a short LSB first on the stream.
+ * IN assertion: there is enough room in pendingBuf.
+ */
+#define put_short(s, w) { \
+ put_byte(s, (uch)((w) & 0xff)); \
+ put_byte(s, (uch)((ush)(w) >> 8)); \
+}
+
+/* ===========================================================================
+ * Send a value on a given number of bits.
+ * IN assertion: length <= 16 and value fits in length bits.
+ */
+#ifdef ZLIB_DEBUG
+local void send_bits OF((deflate_state *s, int value, int length));
+
+local void send_bits(s, value, length)
+ deflate_state *s;
+ int value; /* value to send */
+ int length; /* number of bits */
+{
+ Tracevv((stderr," l %2d v %4x ", length, value));
+ Assert(length > 0 && length <= 15, "invalid length");
+ s->bits_sent += (ulg)length;
+
+ /* If not enough room in bi_buf, use (valid) bits from bi_buf and
+ * (16 - bi_valid) bits from value, leaving (width - (16 - bi_valid))
+ * unused bits in value.
+ */
+ if (s->bi_valid > (int)Buf_size - length) {
+ s->bi_buf |= (ush)value << s->bi_valid;
+ put_short(s, s->bi_buf);
+ s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
+ s->bi_valid += length - Buf_size;
+ } else {
+ s->bi_buf |= (ush)value << s->bi_valid;
+ s->bi_valid += length;
+ }
+}
+#else /* !ZLIB_DEBUG */
+
+#define send_bits(s, value, length) \
+{ int len = length;\
+ if (s->bi_valid > (int)Buf_size - len) {\
+ int val = (int)value;\
+ s->bi_buf |= (ush)val << s->bi_valid;\
+ put_short(s, s->bi_buf);\
+ s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
+ s->bi_valid += len - Buf_size;\
+ } else {\
+ s->bi_buf |= (ush)(value) << s->bi_valid;\
+ s->bi_valid += len;\
+ }\
+}
+#endif /* ZLIB_DEBUG */
+
+
+/* the arguments must not have side effects */
+
/* ===========================================================================
* Initialize the various 'constant' tables.
*/
length = 0;
for (code = 0; code < LENGTH_CODES-1; code++) {
base_length[code] = length;
- for (n = 0; n < (1<<extra_lbits[code]); n++) {
+ for (n = 0; n < (1 << extra_lbits[code]); n++) {
_length_code[length++] = (uch)code;
}
}
* in two different ways: code 284 + 5 bits or code 285, so we
* overwrite length_code[255] to use the best encoding:
*/
- _length_code[length-1] = (uch)code;
+ _length_code[length - 1] = (uch)code;
/* Initialize the mapping dist (0..32K) -> dist code (0..29) */
dist = 0;
for (code = 0 ; code < 16; code++) {
base_dist[code] = dist;
- for (n = 0; n < (1<<extra_dbits[code]); n++) {
+ for (n = 0; n < (1 << extra_dbits[code]); n++) {
_dist_code[dist++] = (uch)code;
}
}
dist >>= 7; /* from now on, all distances are divided by 128 */
for ( ; code < D_CODES; code++) {
base_dist[code] = dist << 7;
- for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
+ for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
_dist_code[256 + dist++] = (uch)code;
}
}
- Assert (dist == 256, "tr_static_init: 256+dist != 512");
+ Assert (dist == 256, "tr_static_init: 256 + dist != 512");
/* Construct the codes of the static literal tree */
for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
}
/* ===========================================================================
- * Genererate the file trees.h describing the static trees.
+ * Generate the file trees.h describing the static trees.
*/
#ifdef GEN_TREES_H
# ifndef ZLIB_DEBUG
# define SEPARATOR(i, last, width) \
((i) == (last)? "\n};\n\n" : \
- ((i) % (width) == (width)-1 ? ",\n" : ", "))
+ ((i) % (width) == (width) - 1 ? ",\n" : ", "))
void gen_trees_header()
{
while (j <= s->heap_len) {
/* Set j to the smallest of the two sons: */
if (j < s->heap_len &&
- smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
+ smaller(tree, s->heap[j + 1], s->heap[j], s->depth)) {
j++;
}
/* Exit if v is smaller than both sons */
*/
tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
- for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
+ for (h = s->heap_max + 1; h < HEAP_SIZE; h++) {
n = s->heap[h];
bits = tree[tree[n].Dad].Len + 1;
if (bits > max_length) bits = max_length, overflow++;
s->bl_count[bits]++;
xbits = 0;
- if (n >= base) xbits = extra[n-base];
+ if (n >= base) xbits = extra[n - base];
f = tree[n].Freq;
s->opt_len += (ulg)f * (unsigned)(bits + xbits);
if (stree) s->static_len += (ulg)f * (unsigned)(stree[n].Len + xbits);
/* Find the first bit length which could increase: */
do {
- bits = max_length-1;
+ bits = max_length - 1;
while (s->bl_count[bits] == 0) bits--;
- s->bl_count[bits]--; /* move one leaf down the tree */
- s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
+ s->bl_count[bits]--; /* move one leaf down the tree */
+ s->bl_count[bits + 1] += 2; /* move one overflow item as its brother */
s->bl_count[max_length]--;
/* The brother of the overflow item also moves one step up,
* but this does not affect bl_count[max_length]
* OUT assertion: the field code is set for all tree elements of non
* zero code length.
*/
-local void gen_codes (tree, max_code, bl_count)
+local void gen_codes(tree, max_code, bl_count)
ct_data *tree; /* the tree to decorate */
int max_code; /* largest code with non zero frequency */
ushf *bl_count; /* number of codes at each bit length */
* without bit reversal.
*/
for (bits = 1; bits <= MAX_BITS; bits++) {
- code = (code + bl_count[bits-1]) << 1;
+ code = (code + bl_count[bits - 1]) << 1;
next_code[bits] = (ush)code;
}
/* Check that the bit counts in bl_count are consistent. The last code
* must be all ones.
*/
- Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+ Assert (code + bl_count[MAX_BITS] - 1 == (1 << MAX_BITS) - 1,
"inconsistent bit counts");
Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
tree[n].Code = (ush)bi_reverse(next_code[len]++, len);
Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
- n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+ n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len] - 1));
}
}
int node; /* new node being created */
/* Construct the initial heap, with least frequent element in
- * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+ * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n + 1].
* heap[0] is not used.
*/
s->heap_len = 0, s->heap_max = HEAP_SIZE;
}
desc->max_code = max_code;
- /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+ /* The elements heap[heap_len/2 + 1 .. heap_len] are leaves of the tree,
* establish sub-heaps of increasing lengths:
*/
for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
* Scan a literal or distance tree to determine the frequencies of the codes
* in the bit length tree.
*/
-local void scan_tree (s, tree, max_code)
+local void scan_tree(s, tree, max_code)
deflate_state *s;
ct_data *tree; /* the tree to be scanned */
int max_code; /* and its largest code of non zero frequency */
int min_count = 4; /* min repeat count */
if (nextlen == 0) max_count = 138, min_count = 3;
- tree[max_code+1].Len = (ush)0xffff; /* guard */
+ tree[max_code + 1].Len = (ush)0xffff; /* guard */
for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
+ curlen = nextlen; nextlen = tree[n + 1].Len;
if (++count < max_count && curlen == nextlen) {
continue;
} else if (count < min_count) {
* Send a literal or distance tree in compressed form, using the codes in
* bl_tree.
*/
-local void send_tree (s, tree, max_code)
+local void send_tree(s, tree, max_code)
deflate_state *s;
ct_data *tree; /* the tree to be scanned */
int max_code; /* and its largest code of non zero frequency */
int max_count = 7; /* max repeat count */
int min_count = 4; /* min repeat count */
- /* tree[max_code+1].Len = -1; */ /* guard already set */
+ /* tree[max_code + 1].Len = -1; */ /* guard already set */
if (nextlen == 0) max_count = 138, min_count = 3;
for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
+ curlen = nextlen; nextlen = tree[n + 1].Len;
if (++count < max_count && curlen == nextlen) {
continue;
} else if (count < min_count) {
send_code(s, curlen, s->bl_tree); count--;
}
Assert(count >= 3 && count <= 6, " 3_6?");
- send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
+ send_code(s, REP_3_6, s->bl_tree); send_bits(s, count - 3, 2);
} else if (count <= 10) {
- send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
+ send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count - 3, 3);
} else {
- send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
+ send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count - 11, 7);
}
count = 0; prevlen = curlen;
if (nextlen == 0) {
/* Build the bit length tree: */
build_tree(s, (tree_desc *)(&(s->bl_desc)));
- /* opt_len now includes the length of the tree representations, except
- * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+ /* opt_len now includes the length of the tree representations, except the
+ * lengths of the bit lengths codes and the 5 + 5 + 4 bits for the counts.
*/
/* Determine the number of bit length codes to send. The pkzip format
if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
}
/* Update opt_len to include the bit length tree and counts */
- s->opt_len += 3*((ulg)max_blindex+1) + 5+5+4;
+ s->opt_len += 3*((ulg)max_blindex + 1) + 5 + 5 + 4;
Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
s->opt_len, s->static_len));
Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
"too many codes");
Tracev((stderr, "\nbl counts: "));
- send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
- send_bits(s, dcodes-1, 5);
- send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */
+ send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
+ send_bits(s, dcodes - 1, 5);
+ send_bits(s, blcodes - 4, 4); /* not -3 as stated in appnote.txt */
for (rank = 0; rank < blcodes; rank++) {
Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
}
Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
- send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
+ send_tree(s, (ct_data *)s->dyn_ltree, lcodes - 1); /* literal tree */
Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
- send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
+ send_tree(s, (ct_data *)s->dyn_dtree, dcodes - 1); /* distance tree */
Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}
ulg stored_len; /* length of input block */
int last; /* one if this is the last block for a file */
{
- send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */
+ send_bits(s, (STORED_BLOCK<<1) + last, 3); /* send block type */
bi_windup(s); /* align on byte boundary */
put_short(s, (ush)stored_len);
put_short(s, (ush)~stored_len);
s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
s->compressed_len += (stored_len + 4) << 3;
s->bits_sent += 2*16;
- s->bits_sent += stored_len<<3;
+ s->bits_sent += stored_len << 3;
#endif
}
max_blindex = build_bl_tree(s);
/* Determine the best encoding. Compute the block lengths in bytes. */
- opt_lenb = (s->opt_len+3+7)>>3;
- static_lenb = (s->static_len+3+7)>>3;
+ opt_lenb = (s->opt_len + 3 + 7) >> 3;
+ static_lenb = (s->static_len + 3 + 7) >> 3;
Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
s->sym_next / 3));
- if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
+#ifndef FORCE_STATIC
+ if (static_lenb <= opt_lenb || s->strategy == Z_FIXED)
+#endif
+ opt_lenb = static_lenb;
} else {
Assert(buf != (char*)0, "lost buf");
#ifdef FORCE_STORED
if (buf != (char*)0) { /* force stored block */
#else
- if (stored_len+4 <= opt_lenb && buf != (char*)0) {
+ if (stored_len + 4 <= opt_lenb && buf != (char*)0) {
/* 4: two words for the lengths */
#endif
/* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
*/
_tr_stored_block(s, buf, stored_len, last);
-#ifdef FORCE_STATIC
- } else if (static_lenb >= 0) { /* force static trees */
-#else
- } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
-#endif
- send_bits(s, (STATIC_TREES<<1)+last, 3);
+ } else if (static_lenb == opt_lenb) {
+ send_bits(s, (STATIC_TREES<<1) + last, 3);
compress_block(s, (const ct_data *)static_ltree,
(const ct_data *)static_dtree);
#ifdef ZLIB_DEBUG
s->compressed_len += 3 + s->static_len;
#endif
} else {
- send_bits(s, (DYN_TREES<<1)+last, 3);
- send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
- max_blindex+1);
+ send_bits(s, (DYN_TREES<<1) + last, 3);
+ send_all_trees(s, s->l_desc.max_code + 1, s->d_desc.max_code + 1,
+ max_blindex + 1);
compress_block(s, (const ct_data *)s->dyn_ltree,
(const ct_data *)s->dyn_dtree);
#ifdef ZLIB_DEBUG
s->compressed_len += 7; /* align on byte boundary */
#endif
}
- Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
- s->compressed_len-7*last));
+ Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len >> 3,
+ s->compressed_len - 7*last));
}
/* ===========================================================================
* Save the match info and tally the frequency counts. Return true if
* the current block must be flushed.
*/
-int ZLIB_INTERNAL _tr_tally (s, dist, lc)
+int ZLIB_INTERNAL _tr_tally(s, dist, lc)
deflate_state *s;
unsigned dist; /* distance of matched string */
- unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */
+ unsigned lc; /* match length - MIN_MATCH or unmatched char (dist==0) */
{
s->sym_buf[s->sym_next++] = (uch)dist;
s->sym_buf[s->sym_next++] = (uch)(dist >> 8);
(ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
(ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");
- s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
+ s->dyn_ltree[_length_code[lc] + LITERALS + 1].Freq++;
s->dyn_dtree[d_code(dist)].Freq++;
}
return (s->sym_next == s->sym_end);
} else {
/* Here, lc is the match length - MIN_MATCH */
code = _length_code[lc];
- send_code(s, code+LITERALS+1, ltree); /* send the length code */
+ send_code(s, code + LITERALS + 1, ltree); /* send length code */
extra = extra_lbits[code];
if (extra != 0) {
lc -= base_length[code];
s->bi_buf = 0;
s->bi_valid = 0;
#ifdef ZLIB_DEBUG
- s->bits_sent = (s->bits_sent+7) & ~7;
+ s->bits_sent = (s->bits_sent + 7) & ~7;
#endif
}
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
+# define crc32_combine_gen z_crc32_combine_gen
+# define crc32_combine_gen64 z_crc32_combine_gen64
+# define crc32_combine_op z_crc32_combine_op
# define crc32_z z_crc32_z
# define deflate z_deflate
# define deflateBound z_deflateBound
# ifdef FAR
# undef FAR
# endif
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+# endif
# include <windows.h>
/* No need for _export, use ZLIB.DEF instead. */
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
# undef _LARGEFILE64_SOURCE
#endif
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-# define Z_HAVE_UNISTD_H
+#ifndef Z_HAVE_UNISTD_H
+# ifdef __WATCOMC__
+# define Z_HAVE_UNISTD_H
+# endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+# if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+# define Z_HAVE_UNISTD_H
+# endif
#endif
#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+# if defined(Z_HAVE_UNISTD_H)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.2.12.1, March xxth, 2022
+ version 1.2.13, October 13th, 2022
Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
extern "C" {
#endif
-#define ZLIB_VERSION "1.2.12.1-motley"
-#define ZLIB_VERNUM 0x12c1
+#define ZLIB_VERSION "1.2.13"
+#define ZLIB_VERNUM 0x12d0
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 12
-#define ZLIB_VER_SUBREVISION 1
+#define ZLIB_VER_REVISION 13
+#define ZLIB_VER_SUBREVISION 0
/*
The 'zlib' compression library provides in-memory compression and
== 0), or after each call of deflate(). If deflate returns Z_OK and with
zero avail_out, it must be called again after making room in the output
buffer because there might be more output pending. See deflatePending(),
- which can be used if desired to determine whether or not there is more ouput
+ which can be used if desired to determine whether or not there is more output
in that case.
Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
to dictionary. dictionary must have enough space, where 32768 bytes is
always enough. If deflateGetDictionary() is called with dictionary equal to
Z_NULL, then only the dictionary length is returned, and nothing is copied.
- Similary, if dictLength is Z_NULL, then it is not set.
+ Similarly, if dictLength is Z_NULL, then it is not set.
deflateGetDictionary() may return a length less than the window size, even
when more than the window size in input has been provided. It may return up
to dictionary. dictionary must have enough space, where 32768 bytes is
always enough. If inflateGetDictionary() is called with dictionary equal to
Z_NULL, then only the dictionary length is returned, and nothing is copied.
- Similary, if dictLength is Z_NULL, then it is not set.
+ Similarly, if dictLength is Z_NULL, then it is not set.
inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
stream state is inconsistent.
In the event that the end of file is reached and only a partial item is
available at the end, i.e. the remaining uncompressed data length is not a
- multiple of size, then the final partial item is nevetheless read into buf
+ multiple of size, then the final partial item is nevertheless read into buf
and the end-of-file flag is set. The length of the partial item read is not
provided, but could be inferred from the result of gztell(). This behavior
is the same as the behavior of fread() implementations in common libraries,
but it prevents the direct use of gzfread() to read a concurrently written
- file, reseting and retrying on end-of-file, when size is not 1.
+ file, resetting and retrying on end-of-file, when size is not 1.
*/
ZEXTERN int ZEXPORT gzwrite OF((gzFile file, voidpc buf, unsigned len));
ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table OF((void));
ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));
ZEXTERN int ZEXPORT inflateValidate OF((z_streamp, int));
-ZEXTERN unsigned long ZEXPORT inflateCodesUsed OF ((z_streamp));
+ZEXTERN unsigned long ZEXPORT inflateCodesUsed OF((z_streamp));
ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp));
ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp));
#if defined(_WIN32) && !defined(Z_SOLO)
#ifdef ZLIB_DEBUG
flags += 1 << 8;
#endif
+ /*
#if defined(ASMV) || defined(ASMINF)
flags += 1 << 9;
#endif
+ */
#ifdef ZLIB_WINAPI
flags += 1 << 10;
#endif
# endif
int ZLIB_INTERNAL z_verbose = verbose;
-void ZLIB_INTERNAL z_error (m)
+void ZLIB_INTERNAL z_error(m)
char *m;
{
fprintf(stderr, "%s\n", m);
* a protected system like OS/2. Use Microsoft C instead.
*/
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size)
{
voidpf buf;
ulg bsize = (ulg)items*size;
return buf;
}
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
{
int n;
# define _hfree hfree
#endif
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, uInt items, uInt size)
{
(void)opaque;
return _halloc((long)items, size);
}
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
{
(void)opaque;
_hfree(ptr);
extern void free OF((voidpf ptr));
#endif
-voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
+voidpf ZLIB_INTERNAL zcalloc(opaque, items, size)
voidpf opaque;
unsigned items;
unsigned size;
(voidpf)calloc(items, size);
}
-void ZLIB_INTERNAL zcfree (opaque, ptr)
+void ZLIB_INTERNAL zcfree(opaque, ptr)
voidpf opaque;
voidpf ptr;
{
(!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
+ ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
#endif
/* common defaults */
-v1.2.12
-(21767c654d31d2dccdde4330529775c6c5fd5389)
+v1.2.13
+(04f42ceca40f73e2978b50e93806c2a18c1281fc)
-https://github.com/madler/zlib/releases/tag/v1.2.12
+https://github.com/madler/zlib/releases/tag/v1.2.13
+
+We have removed zlib.3.pdf from our local copy, as it is a binary file which is
+not needed for our compilation.
We have also cherry-picked into our local copy:
-https://github.com/madler/zlib/commit/ec3df00224d4b396e2ac6586ab5d25f673caa4c2
-https://github.com/madler/zlib/commit/7ecf7c7458578d05a20fa481436dd5c58db112f7
-And we have inserted into our local copy of zutil.h, line 196, the following declaration:
- ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
+- https://github.com/madler/zlib/commit/e554695638228b846d49657f31eeff0ca4680e8a
+
+ This patch only affects memLevel 9 compression. .NET doesn't currently use this
+ memLevel, but we'll take this patch out of an abundance of caution just in case
+ we enable this functionality in a future release.
project(zlib C)
-set(VERSION "1.2.12")
-
-option(ASM686 "Enable building i686 assembly implementation")
-option(AMD64 "Enable building amd64 assembly implementation")
+set(VERSION "1.2.13")
set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
)
endif()
-if(CMAKE_COMPILER_IS_GNUCC)
- if(ASM686)
- set(ZLIB_ASMS contrib/asm686/match.S)
- elseif (AMD64)
- set(ZLIB_ASMS contrib/amd64/amd64-match.S)
- endif ()
-
- if(ZLIB_ASMS)
- add_definitions(-DASMV)
- set_source_files_properties(${ZLIB_ASMS} PROPERTIES LANGUAGE C COMPILE_FLAGS -DNO_UNDERLINE)
- endif()
-endif()
-
-if(MSVC)
- if(ASM686)
- ENABLE_LANGUAGE(ASM_MASM)
- set(ZLIB_ASMS
- contrib/masmx86/inffas32.asm
- contrib/masmx86/match686.asm
- )
- elseif (AMD64)
- ENABLE_LANGUAGE(ASM_MASM)
- set(ZLIB_ASMS
- contrib/masmx64/gvmat64.asm
- contrib/masmx64/inffasx64.asm
- )
- endif()
-
- if(ZLIB_ASMS)
- add_definitions(-DASMV -DASMINF)
- endif()
-endif()
-
# parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
endif(MINGW)
-add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
-add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
set_target_properties(zlib PROPERTIES SOVERSION 1)
ChangeLog file for zlib
+Changes in 1.2.13 (13 Oct 2022)
+- Fix configure issue that discarded provided CC definition
+- Correct incorrect inputs provided to the CRC functions
+- Repair prototypes and exporting of new CRC functions
+- Fix inflateBack to detect invalid input with distances too far
+- Have infback() deliver all of the available output up to any error
+- Fix a bug when getting a gzip header extra field with inflate()
+- Fix bug in block type selection when Z_FIXED used
+- Tighten deflateBound bounds
+- Remove deleted assembler code references
+- Various portability and appearance improvements
+
Changes in 1.2.12 (27 Mar 2022)
- Cygwin does not have _wopen(), so do not create gzopen_w() there
- Permit a deflateParams() parameter change as soon as possible
- Fix types in contrib/minizip to match result of get_crc_table()
- Simplify contrib/vstudio/vc10 with 'd' suffix
- Add TOP support to win32/Makefile.msc
-- Suport i686 and amd64 assembler builds in CMakeLists.txt
+- Support i686 and amd64 assembler builds in CMakeLists.txt
- Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h
- Add vc11 and vc12 build files to contrib/vstudio
- Add gzvprintf() as an undocumented function in zlib
- Use u4 type for crc_table to avoid conversion warnings
- Apply casts in zlib.h to avoid conversion warnings
- Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller]
-- Improve inflateSync() documentation to note indeterminancy
+- Improve inflateSync() documentation to note indeterminacy
- Add deflatePending() function to return the amount of pending output
- Correct the spelling of "specification" in FAQ [Randers-Pehrson]
- Add a check in configure for stdarg.h, use for gzprintf()
- Check that pointers fit in ints when gzprint() compiled old style
- Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler]
- Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt]
-- Add debug records in assmebler code [Londer]
+- Add debug records in assembler code [Londer]
- Update RFC references to use http://tools.ietf.org/html/... [Li]
- Add --archs option, use of libtool to configure for Mac OS X [Borstel]
- Include additional header file on VMS for off_t typedef
- Try to use _vsnprintf where it supplants vsprintf [Vollant]
- Add some casts in inffast.c
-- Enchance comments in zlib.h on what happens if gzprintf() tries to
+- Enhance comments in zlib.h on what happens if gzprintf() tries to
write more than 4095 bytes before compression
- Remove unused state from inflateBackEnd()
- Remove exit(0) from minigzip.c, example.c
- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
- the declaration of FAR (Gilles VOllant)
+ the declaration of FAR (Gilles Vollant)
- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
- read_buf buf parameter of type Bytef* instead of charf*
- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
- renamed deflateOptions as deflateInit2, call one or the other but not both
- added the method parameter for deflateInit2
- added inflateInit2
-- simplied considerably deflateInit and inflateInit by not supporting
+- simplified considerably deflateInit and inflateInit by not supporting
user-provided history buffer. This is supported only in deflateInit2
and inflateInit2
--- /dev/null
+Copyright notice:
+
+ (C) 1995-2022 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
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+
+ Jean-loup Gailly Mark Adler
+ jloup@gzip.org madler@alumni.caltech.edu
# Normally configure builds both a static and a shared library.
# If you want to build just a static library, use: ./configure --static
-# To use the asm code, type:
-# cp contrib/asm?86/match.S ./match.S
-# make LOC=-DASMV OBJA=match.o
-
# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
# make install
# To install in $HOME instead of /usr/local, use:
SFLAGS=-O
LDFLAGS=
-TEST_LDFLAGS=-L. libz.a
+TEST_LDFLAGS=$(LDFLAGS) -L. libz.a
LDSHARED=$(CC)
CPP=$(CC) -E
STATICLIB=libz.a
SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.12
+SHAREDLIBV=libz.so.1.2.13
SHAREDLIBM=libz.so.1
LIBS=$(STATICLIB) $(SHAREDLIBV)
teststatic: static
@TMPST=tmpst_$$; \
- if echo hello world | ./minigzip | ./minigzip -d && ./example $$TMPST ; then \
+ if echo hello world | ${QEMU_RUN} ./minigzip | ${QEMU_RUN} ./minigzip -d && ${QEMU_RUN} ./example $$TMPST ; then \
echo ' *** zlib test OK ***'; \
else \
echo ' *** zlib test FAILED ***'; false; \
DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
TMPSH=tmpsh_$$; \
- if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh $$TMPSH; then \
+ if echo hello world | ${QEMU_RUN} ./minigzipsh | ${QEMU_RUN} ./minigzipsh -d && ${QEMU_RUN} ./examplesh $$TMPSH; then \
echo ' *** zlib shared test OK ***'; \
else \
echo ' *** zlib shared test FAILED ***'; false; \
test64: all64
@TMP64=tmp64_$$; \
- if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64 $$TMP64; then \
+ if echo hello world | ${QEMU_RUN} ./minigzip64 | ${QEMU_RUN} ./minigzip64 -d && ${QEMU_RUN} ./example64 $$TMP64; then \
echo ' *** zlib 64-bit test OK ***'; \
else \
echo ' *** zlib 64-bit test FAILED ***'; false; \
cover: infcover
rm -f *.gcda
- ./infcover
+ ${QEMU_RUN} ./infcover
gcov inf*.c
libz.a: $(OBJS)
$(CC) $(CFLAGS) -o $@ minigzip.o $(TEST_LDFLAGS)
examplesh$(EXE): example.o $(SHAREDLIBV)
- $(CC) $(CFLAGS) -o $@ example.o -L. $(SHAREDLIBV)
+ $(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS) -L. $(SHAREDLIBV)
minigzipsh$(EXE): minigzip.o $(SHAREDLIBV)
- $(CC) $(CFLAGS) -o $@ minigzip.o -L. $(SHAREDLIBV)
+ $(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS) -L. $(SHAREDLIBV)
example64$(EXE): example64.o $(STATICLIB)
$(CC) $(CFLAGS) -o $@ example64.o $(TEST_LDFLAGS)
ZLIB DATA COMPRESSION LIBRARY
-zlib 1.2.12 is a general purpose data compression library. All the code is
+zlib 1.2.13 is a general purpose data compression library. All the code is
thread safe. The data format used by the zlib library is described by RFCs
(Request for Comments) 1950 to 1952 in the files
http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
issue of Dr. Dobb's Journal; a copy of the article is available at
http://marknelson.us/1997/01/01/zlib-engine/ .
-The changes made in version 1.2.12 are documented in the file ChangeLog.
+The changes made in version 1.2.13 are documented in the file ChangeLog.
Unsupported third party contributions are provided in directory contrib/ .
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
Z_STREAM_ERROR if the level parameter is invalid.
*/
-int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
+int ZEXPORT compress2(dest, destLen, source, sourceLen, level)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
/* ===========================================================================
*/
-int ZEXPORT compress (dest, destLen, source, sourceLen)
+int ZEXPORT compress(dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
If the default memLevel or windowBits for deflateInit() is changed, then
this function needs to be updated.
*/
-uLong ZEXPORT compressBound (sourceLen)
+uLong ZEXPORT compressBound(sourceLen)
uLong sourceLen;
{
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
# set command prefix for cross-compilation
if [ -n "${CHOST}" ]; then
- uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
+ uname=${CHOST}
+ mname=${CHOST}
CROSS_PREFIX="${CHOST}-"
+else
+ mname=`(uname -a || echo unknown) 2>/dev/null`
fi
# destination name for static library
else
cc=${CROSS_PREFIX}cc
fi
+else
+ cc=${CC}
fi
-cflags=${CFLAGS-"-O3"}
-# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
+
case "$cc" in
*gcc*) gcc=1 ;;
*clang*) gcc=1 ;;
fi
if test "$warn" -eq 1; then
if test "$zconst" -eq 1; then
- CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST"
+ CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -DZLIB_CONST"
else
- CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
+ CFLAGS="${CFLAGS} -Wall -Wextra"
fi
fi
if test $sanitize -eq 1; then
- CFLAGS="${CFLAGS} -fsanitize=address"
+ CFLAGS="${CFLAGS} -g -fsanitize=address"
fi
if test $debug -eq 1; then
CFLAGS="${CFLAGS} -DZLIB_DEBUG"
uname=`(uname -s || echo unknown) 2>/dev/null`
fi
case "$uname" in
- Linux* | linux* | GNU | GNU/* | solaris*)
+ Linux* | linux* | *-linux* | GNU | GNU/* | solaris*)
+ case "$mname" in
+ *sparc*)
+ LDFLAGS="${LDFLAGS} -Wl,--no-warn-rwx-segments" ;;
+ esac
LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
*BSD | *bsd* | DragonFly)
LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
LDCONFIG="ldconfig -m" ;;
- CYGWIN* | Cygwin* | cygwin* | OS/2*)
+ CYGWIN* | Cygwin* | cygwin* | *-cygwin* | OS/2*)
EXE='.exe' ;;
- MINGW* | mingw*)
-# temporary bypass
+ MINGW* | mingw* | *-mingw*)
rm -f $test.[co] $test $test$shared_ext
- echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
- leave 1
+ echo "If this doesn't work for you, try win32/Makefile.gcc." | tee -a configure.log
LDSHARED=${LDSHARED-"$cc -shared"}
LDSHAREDLIBC=""
EXE='.exe' ;;
- QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
- # (alain.bonnefoy@icbt.com)
- LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
+ QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
+ # (alain.bonnefoy@icbt.com)
+ LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
HP-UX*)
- LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
- case `(uname -m || echo unknown) 2>/dev/null` in
- ia64)
- shared_ext='.so'
- SHAREDLIB='libz.so' ;;
- *)
- shared_ext='.sl'
- SHAREDLIB='libz.sl' ;;
- esac ;;
- Darwin* | darwin*)
- shared_ext='.dylib'
- SHAREDLIB=libz$shared_ext
- SHAREDLIBV=libz.$VER$shared_ext
- SHAREDLIBM=libz.$VER1$shared_ext
- LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
- if libtool -V 2>&1 | grep Apple > /dev/null; then
- AR="libtool"
- else
- AR="/usr/bin/libtool"
- fi
- ARFLAGS="-o" ;;
- *) LDSHARED=${LDSHARED-"$cc -shared"} ;;
+ LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
+ case `(uname -m || echo unknown) 2>/dev/null` in
+ ia64)
+ shared_ext='.so'
+ SHAREDLIB='libz.so' ;;
+ *)
+ shared_ext='.sl'
+ SHAREDLIB='libz.sl' ;;
+ esac ;;
+ AIX*)
+ LDFLAGS="${LDFLAGS} -Wl,-brtl" ;;
+ Darwin* | darwin* | *-darwin*)
+ shared_ext='.dylib'
+ SHAREDLIB=libz$shared_ext
+ SHAREDLIBV=libz.$VER$shared_ext
+ SHAREDLIBM=libz.$VER1$shared_ext
+ LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
+ if libtool -V 2>&1 | grep Apple > /dev/null; then
+ AR="libtool"
+ else
+ AR="/usr/bin/libtool"
+ fi
+ ARFLAGS="-o" ;;
+ *)
+ LDSHARED=${LDSHARED-"$cc -shared"} ;;
esac
else
# find system name and corresponding cc options
TEST="all teststatic testshared"
fi
-# check for underscores in external names for use by assembler code
-CPP=${CPP-"$CC -E"}
-case $CFLAGS in
- *ASMV*)
- echo >> configure.log
- show "$NM $test.o | grep _hello"
- if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then
- CPP="$CPP -DNO_UNDERLINE"
- echo Checking for underline in external names... No. | tee -a configure.log
- else
- echo Checking for underline in external names... Yes. | tee -a configure.log
- fi ;;
-esac
-
echo >> configure.log
# check for size_t
# endif
#endif
+/* If available, use the ARM processor CRC32 instruction. */
+#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
+# define ARMCRC32
+#endif
+
/* Local functions. */
local z_crc_t multmodp OF((z_crc_t a, z_crc_t b));
local z_crc_t x2nmodp OF((z_off64_t n, unsigned k));
-/* If available, use the ARM processor CRC32 instruction. */
-#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
-# define ARMCRC32
+#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
+ local z_word_t byte_swap OF((z_word_t word));
+#endif
+
+#if defined(W) && !defined(ARMCRC32)
+ local z_crc_t crc_word OF((z_word_t data));
+ local z_word_t crc_word_big OF((z_word_t data));
#endif
#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
len &= 7;
/* Do three interleaved CRCs to realize the throughput of one crc32x
- instruction per cycle. Each CRC is calcuated on Z_BATCH words. The three
- CRCs are combined into a single CRC after each set of batches. */
+ instruction per cycle. Each CRC is calculated on Z_BATCH words. The
+ three CRCs are combined into a single CRC after each set of batches. */
while (num >= 3 * Z_BATCH) {
crc1 = 0;
crc2 = 0;
}
/* ========================================================================= */
-uLong crc32_combine_op(crc1, crc2, op)
+uLong ZEXPORT crc32_combine_op(crc1, crc2, op)
uLong crc1;
uLong crc2;
uLong op;
#include "deflate.h"
const char deflate_copyright[] =
- " deflate 1.2.12 Copyright 1995-2022 Jean-loup Gailly and Mark Adler ";
+ " deflate 1.2.13 Copyright 1995-2022 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
local void putShortMSB OF((deflate_state *s, uInt b));
local void flush_pending OF((z_streamp strm));
local unsigned read_buf OF((z_streamp strm, Bytef *buf, unsigned size));
-#ifdef ASMV
-# pragma message("Assembler code may have bugs -- use at your own risk")
- void match_init OF((void)); /* asm code initialization */
- uInt longest_match OF((deflate_state *s, IPos cur_match));
-#else
local uInt longest_match OF((deflate_state *s, IPos cur_match));
-#endif
#ifdef ZLIB_DEBUG
local void check_match OF((deflate_state *s, IPos start, IPos match,
* characters, so that a running hash key can be computed from the previous
* key instead of complete recalculation each time.
*/
-#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
+#define UPDATE_HASH(s,h,c) (h = (((h) << s->hash_shift) ^ (c)) & s->hash_mask)
/* ===========================================================================
*/
#define CLEAR_HASH(s) \
do { \
- s->head[s->hash_size-1] = NIL; \
+ s->head[s->hash_size - 1] = NIL; \
zmemzero((Bytef *)s->head, \
- (unsigned)(s->hash_size-1)*sizeof(*s->head)); \
+ (unsigned)(s->hash_size - 1)*sizeof(*s->head)); \
} while (0)
/* ===========================================================================
if (windowBits < 0) { /* suppress zlib wrapper */
wrap = 0;
+ if (windowBits < -15)
+ return Z_STREAM_ERROR;
windowBits = -windowBits;
}
#ifdef GZIP
s->hash_bits = (uInt)memLevel + 7;
s->hash_size = 1 << s->hash_bits;
s->hash_mask = s->hash_size - 1;
- s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
+ s->hash_shift = ((s->hash_bits + MIN_MATCH-1) / MIN_MATCH);
s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos));
* sym_buf value to read moves forward three bytes. From that symbol, up to
* 31 bits are written to pending_buf. The closest the written pending_buf
* bits gets to the next sym_buf symbol to read is just before the last
- * code is written. At that time, 31*(n-2) bits have been written, just
- * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at
- * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1
+ * code is written. At that time, 31*(n - 2) bits have been written, just
+ * after 24*(n - 2) bits have been consumed from sym_buf. sym_buf starts at
+ * 8*n bits into pending_buf. (Note that the symbol buffer fills when n - 1
* symbols are written.) The closest the writing gets to what is unread is
- * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and
+ * then n + 14 bits. Here n is lit_bufsize, which is 16384 by default, and
* can range from 128 to 32768.
*
* Therefore, at a minimum, there are 142 bits of space between what is
/* =========================================================================
* Check for a valid deflate stream state. Return 0 if ok, 1 if not.
*/
-local int deflateStateCheck (strm)
+local int deflateStateCheck(strm)
z_streamp strm;
{
deflate_state *s;
}
/* ========================================================================= */
-int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
+int ZEXPORT deflateSetDictionary(strm, dictionary, dictLength)
z_streamp strm;
const Bytef *dictionary;
uInt dictLength;
}
/* ========================================================================= */
-int ZEXPORT deflateGetDictionary (strm, dictionary, dictLength)
+int ZEXPORT deflateGetDictionary(strm, dictionary, dictLength)
z_streamp strm;
Bytef *dictionary;
uInt *dictLength;
}
/* ========================================================================= */
-int ZEXPORT deflateResetKeep (strm)
+int ZEXPORT deflateResetKeep(strm)
z_streamp strm;
{
deflate_state *s;
}
/* ========================================================================= */
-int ZEXPORT deflateReset (strm)
+int ZEXPORT deflateReset(strm)
z_streamp strm;
{
int ret;
}
/* ========================================================================= */
-int ZEXPORT deflateSetHeader (strm, head)
+int ZEXPORT deflateSetHeader(strm, head)
z_streamp strm;
gz_headerp head;
{
}
/* ========================================================================= */
-int ZEXPORT deflatePending (strm, pending, bits)
+int ZEXPORT deflatePending(strm, pending, bits)
unsigned *pending;
int *bits;
z_streamp strm;
}
/* ========================================================================= */
-int ZEXPORT deflatePrime (strm, bits, value)
+int ZEXPORT deflatePrime(strm, bits, value)
z_streamp strm;
int bits;
int value;
}
/* =========================================================================
- * For the default windowBits of 15 and memLevel of 8, this function returns
- * a close to exact, as well as small, upper bound on the compressed size.
- * They are coded as constants here for a reason--if the #define's are
- * changed, then this function needs to be changed as well. The return
- * value for 15 and 8 only works for those exact settings.
+ * For the default windowBits of 15 and memLevel of 8, this function returns a
+ * close to exact, as well as small, upper bound on the compressed size. This
+ * is an expansion of ~0.03%, plus a small constant.
+ *
+ * For any setting other than those defaults for windowBits and memLevel, one
+ * of two worst case bounds is returned. This is at most an expansion of ~4% or
+ * ~13%, plus a small constant.
*
- * For any setting other than those defaults for windowBits and memLevel,
- * the value returned is a conservative worst case for the maximum expansion
- * resulting from using fixed blocks instead of stored blocks, which deflate
- * can emit on compressed data for some combinations of the parameters.
+ * Both the 0.03% and 4% derive from the overhead of stored blocks. The first
+ * one is for stored blocks of 16383 bytes (memLevel == 8), whereas the second
+ * is for stored blocks of 127 bytes (the worst case memLevel == 1). The
+ * expansion results from five bytes of header for each stored block.
*
- * This function could be more sophisticated to provide closer upper bounds for
- * every combination of windowBits and memLevel. But even the conservative
- * upper bound of about 14% expansion does not seem onerous for output buffer
- * allocation.
+ * The larger expansion of 13% results from a window size less than or equal to
+ * the symbols buffer size (windowBits <= memLevel + 7). In that case some of
+ * the data being compressed may have slid out of the sliding window, impeding
+ * a stored block from being emitted. Then the only choice is a fixed or
+ * dynamic block, where a fixed block limits the maximum expansion to 9 bits
+ * per 8-bit byte, plus 10 bits for every block. The smallest block size for
+ * which this can occur is 255 (memLevel == 2).
+ *
+ * Shifts are used to approximate divisions, for speed.
*/
uLong ZEXPORT deflateBound(strm, sourceLen)
z_streamp strm;
uLong sourceLen;
{
deflate_state *s;
- uLong complen, wraplen;
+ uLong fixedlen, storelen, wraplen;
+
+ /* upper bound for fixed blocks with 9-bit literals and length 255
+ (memLevel == 2, which is the lowest that may not use stored blocks) --
+ ~13% overhead plus a small constant */
+ fixedlen = sourceLen + (sourceLen >> 3) + (sourceLen >> 8) +
+ (sourceLen >> 9) + 4;
- /* conservative upper bound for compressed data */
- complen = sourceLen +
- ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5;
+ /* upper bound for stored blocks with length 127 (memLevel == 1) --
+ ~4% overhead plus a small constant */
+ storelen = sourceLen + (sourceLen >> 5) + (sourceLen >> 7) +
+ (sourceLen >> 11) + 7;
- /* if can't get parameters, return conservative bound plus zlib wrapper */
+ /* if can't get parameters, return larger bound plus a zlib wrapper */
if (deflateStateCheck(strm))
- return complen + 6;
+ return (fixedlen > storelen ? fixedlen : storelen) + 6;
/* compute wrapper length */
s = strm->state;
wraplen = 6;
}
- /* if not default parameters, return conservative bound */
+ /* if not default parameters, return one of the conservative bounds */
if (s->w_bits != 15 || s->hash_bits != 8 + 7)
- return complen + wraplen;
+ return (s->w_bits <= s->hash_bits && s->level ? fixedlen : storelen) +
+ wraplen;
- /* default settings: return tight bound for that case */
+ /* default settings: return tight bound for that case -- ~0.03% overhead
+ plus a small constant */
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
(sourceLen >> 25) + 13 - 6 + wraplen;
}
* IN assertion: the stream state is correct and there is enough room in
* pending_buf.
*/
-local void putShortMSB (s, b)
+local void putShortMSB(s, b)
deflate_state *s;
uInt b;
{
} while (0)
/* ========================================================================= */
-int ZEXPORT deflate (strm, flush)
+int ZEXPORT deflate(strm, flush)
z_streamp strm;
int flush;
{
s->status = BUSY_STATE;
if (s->status == INIT_STATE) {
/* zlib header */
- uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
+ uInt header = (Z_DEFLATED + ((s->w_bits - 8) << 4)) << 8;
uInt level_flags;
if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
}
/* ========================================================================= */
-int ZEXPORT deflateEnd (strm)
+int ZEXPORT deflateEnd(strm)
z_streamp strm;
{
int status;
* To simplify the source, this is not supported for 16-bit MSDOS (which
* doesn't have enough memory anyway to duplicate compression states).
*/
-int ZEXPORT deflateCopy (dest, source)
+int ZEXPORT deflateCopy(dest, source)
z_streamp dest;
z_streamp source;
{
/* ===========================================================================
* Initialize the "longest match" routines for a new zlib stream
*/
-local void lm_init (s)
+local void lm_init(s)
deflate_state *s;
{
s->window_size = (ulg)2L*s->w_size;
s->match_length = s->prev_length = MIN_MATCH-1;
s->match_available = 0;
s->ins_h = 0;
-#ifndef FASTEST
-#ifdef ASMV
- match_init(); /* initialize the asm code */
-#endif
-#endif
}
#ifndef FASTEST
* string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
* OUT assertion: the match length is not greater than s->lookahead.
*/
-#ifndef ASMV
-/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
- * match.S. The code will be functionally equivalent.
- */
local uInt longest_match(s, cur_match)
deflate_state *s;
IPos cur_match; /* current match */
*/
register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
register ush scan_start = *(ushf*)scan;
- register ush scan_end = *(ushf*)(scan+best_len-1);
+ register ush scan_end = *(ushf*)(scan + best_len - 1);
#else
register Bytef *strend = s->window + s->strstart + MAX_MATCH;
- register Byte scan_end1 = scan[best_len-1];
+ register Byte scan_end1 = scan[best_len - 1];
register Byte scan_end = scan[best_len];
#endif
*/
if ((uInt)nice_match > s->lookahead) nice_match = (int)s->lookahead;
- Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+ Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+ "need lookahead");
do {
Assert(cur_match < s->strstart, "no future");
/* This code assumes sizeof(unsigned short) == 2. Do not use
* UNALIGNED_OK if your compiler uses a different size.
*/
- if (*(ushf*)(match+best_len-1) != scan_end ||
+ if (*(ushf*)(match + best_len - 1) != scan_end ||
*(ushf*)match != scan_start) continue;
/* It is not necessary to compare scan[2] and match[2] since they are
* always equal when the other bytes match, given that the hash keys
* are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
- * strstart+3, +5, ... up to strstart+257. We check for insufficient
+ * strstart + 3, + 5, up to strstart + 257. We check for insufficient
* lookahead only every 4th comparison; the 128th check will be made
- * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
+ * at strstart + 257. If MAX_MATCH-2 is not a multiple of 8, it is
* necessary to put more guard bytes at the end of the window, or
* to check more often for insufficient lookahead.
*/
Assert(scan[2] == match[2], "scan[2]?");
scan++, match++;
do {
- } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+ } while (*(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+ *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+ *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+ *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
scan < strend);
/* The funny "do {}" generates better code on most compilers */
- /* Here, scan <= window+strstart+257 */
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+ /* Here, scan <= window + strstart + 257 */
+ Assert(scan <= s->window + (unsigned)(s->window_size - 1),
+ "wild scan");
if (*scan == *match) scan++;
- len = (MAX_MATCH - 1) - (int)(strend-scan);
+ len = (MAX_MATCH - 1) - (int)(strend - scan);
scan = strend - (MAX_MATCH-1);
#else /* UNALIGNED_OK */
- if (match[best_len] != scan_end ||
- match[best_len-1] != scan_end1 ||
- *match != *scan ||
- *++match != scan[1]) continue;
+ if (match[best_len] != scan_end ||
+ match[best_len - 1] != scan_end1 ||
+ *match != *scan ||
+ *++match != scan[1]) continue;
- /* The check at best_len-1 can be removed because it will be made
+ /* The check at best_len - 1 can be removed because it will be made
* again later. (This heuristic is not always a win.)
* It is not necessary to compare scan[2] and match[2] since they
* are always equal when the other bytes match, given that
Assert(*scan == *match, "match[2]?");
/* We check for insufficient lookahead only every 8th comparison;
- * the 256th check will be made at strstart+258.
+ * the 256th check will be made at strstart + 258.
*/
do {
} while (*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
scan < strend);
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+ Assert(scan <= s->window + (unsigned)(s->window_size - 1),
+ "wild scan");
len = MAX_MATCH - (int)(strend - scan);
scan = strend - MAX_MATCH;
best_len = len;
if (len >= nice_match) break;
#ifdef UNALIGNED_OK
- scan_end = *(ushf*)(scan+best_len-1);
+ scan_end = *(ushf*)(scan + best_len - 1);
#else
- scan_end1 = scan[best_len-1];
+ scan_end1 = scan[best_len - 1];
scan_end = scan[best_len];
#endif
}
if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
return s->lookahead;
}
-#endif /* ASMV */
#else /* FASTEST */
*/
Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
- Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+ Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+ "need lookahead");
Assert(cur_match < s->strstart, "no future");
*/
if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
- /* The check at best_len-1 can be removed because it will be made
+ /* The check at best_len - 1 can be removed because it will be made
* again later. (This heuristic is not always a win.)
* It is not necessary to compare scan[2] and match[2] since they
* are always equal when the other bytes match, given that
Assert(*scan == *match, "match[2]?");
/* We check for insufficient lookahead only every 8th comparison;
- * the 256th check will be made at strstart+258.
+ * the 256th check will be made at strstart + 258.
*/
do {
} while (*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
scan < strend);
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+ Assert(scan <= s->window + (unsigned)(s->window_size - 1), "wild scan");
len = MAX_MATCH - (int)(strend - scan);
z_error("invalid match");
}
if (z_verbose > 1) {
- fprintf(stderr,"\\[%d,%d]", start-match, length);
+ fprintf(stderr,"\\[%d,%d]", start - match, length);
do { putc(s->window[start++], stderr); } while (--length != 0);
}
}
/* If the window is almost full and there is insufficient lookahead,
* move the upper half to the lower one to make room in the upper half.
*/
- if (s->strstart >= wsize+MAX_DIST(s)) {
+ if (s->strstart >= wsize + MAX_DIST(s)) {
- zmemcpy(s->window, s->window+wsize, (unsigned)wsize - more);
+ zmemcpy(s->window, s->window + wsize, (unsigned)wsize - more);
s->match_start -= wsize;
s->strstart -= wsize; /* we now have strstart >= MAX_DIST */
s->block_start -= (long) wsize;
*
* deflate_stored() is written to minimize the number of times an input byte is
* copied. It is most efficient with large input and output buffers, which
- * maximizes the opportunites to have a single copy from next_in to next_out.
+ * maximizes the opportunities to have a single copy from next_in to next_out.
*/
local block_state deflate_stored(s, flush)
deflate_state *s;
if (s->lookahead == 0) break; /* flush the current block */
}
- /* Insert the string window[strstart .. strstart+2] in the
+ /* Insert the string window[strstart .. strstart + 2] in the
* dictionary, and set hash_head to the head of the hash chain:
*/
hash_head = NIL;
s->strstart += s->match_length;
s->match_length = 0;
s->ins_h = s->window[s->strstart];
- UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+ UPDATE_HASH(s, s->ins_h, s->window[s->strstart + 1]);
#if MIN_MATCH != 3
Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
} else {
/* No match, output a literal byte */
Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
+ _tr_tally_lit(s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
}
if (s->lookahead == 0) break; /* flush the current block */
}
- /* Insert the string window[strstart .. strstart+2] in the
+ /* Insert the string window[strstart .. strstart + 2] in the
* dictionary, and set hash_head to the head of the hash chain:
*/
hash_head = NIL;
uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
/* Do not insert strings in hash table beyond this. */
- check_match(s, s->strstart-1, s->prev_match, s->prev_length);
+ check_match(s, s->strstart - 1, s->prev_match, s->prev_length);
- _tr_tally_dist(s, s->strstart -1 - s->prev_match,
+ _tr_tally_dist(s, s->strstart - 1 - s->prev_match,
s->prev_length - MIN_MATCH, bflush);
/* Insert in hash table all strings up to the end of the match.
- * strstart-1 and strstart are already inserted. If there is not
+ * strstart - 1 and strstart are already inserted. If there is not
* enough lookahead, the last two strings are not inserted in
* the hash table.
*/
- s->lookahead -= s->prev_length-1;
+ s->lookahead -= s->prev_length - 1;
s->prev_length -= 2;
do {
if (++s->strstart <= max_insert) {
* single literal. If there was a match but the current match
* is longer, truncate the previous match to a single literal.
*/
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+ Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+ _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
if (bflush) {
FLUSH_BLOCK_ONLY(s, 0);
}
}
Assert (flush != Z_NO_FLUSH, "no flush?");
if (s->match_available) {
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+ Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+ _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
s->match_available = 0;
}
s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
if (s->match_length > s->lookahead)
s->match_length = s->lookahead;
}
- Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
+ Assert(scan <= s->window + (uInt)(s->window_size - 1),
+ "wild scan");
}
/* Emit match if have run of MIN_MATCH or longer, else emit literal */
} else {
/* No match, output a literal byte */
Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
+ _tr_tally_lit(s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
}
/* Output a literal byte */
s->match_length = 0;
Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
+ _tr_tally_lit(s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
if (bflush) FLUSH_BLOCK(s, 0);
# define _tr_tally_dist(s, distance, length, flush) \
{ uch len = (uch)(length); \
ush dist = (ush)(distance); \
- s->sym_buf[s->sym_next++] = dist; \
- s->sym_buf[s->sym_next++] = dist >> 8; \
+ s->sym_buf[s->sym_next++] = (uch)dist; \
+ s->sym_buf[s->sym_next++] = (uch)(dist >> 8); \
s->sym_buf[s->sym_next++] = len; \
dist--; \
s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
The gz_strwinerror function does not change the current setting of
GetLastError. */
-char ZLIB_INTERNAL *gz_strwinerror (error)
+char ZLIB_INTERNAL *gz_strwinerror(error)
DWORD error;
{
static char buf[1024];
the output buffer is larger than the input buffer, which also assures
space for gzungetc() */
state->x.next = state->out;
- if (strm->avail_in) {
- memcpy(state->x.next, strm->next_in, strm->avail_in);
- state->x.have = strm->avail_in;
- strm->avail_in = 0;
- }
+ memcpy(state->x.next, strm->next_in, strm->avail_in);
+ state->x.have = strm->avail_in;
+ strm->avail_in = 0;
state->how = COPY;
state->direct = 1;
return 0;
#else /* !STDC && !Z_HAVE_STDARG_H */
/* -- see zlib.h -- */
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
+int ZEXPORTVA gzprintf(file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
gzFile file;
const char *format;
state->window = window;
state->wnext = 0;
state->whave = 0;
+ state->sane = 1;
return Z_OK;
}
break;
case DONE:
- /* inflate stream terminated properly -- write leftover output */
+ /* inflate stream terminated properly */
ret = Z_STREAM_END;
- if (left < state->wsize) {
- if (out(out_desc, state->window, state->wsize - left))
- ret = Z_BUF_ERROR;
- }
goto inf_leave;
case BAD:
ret = Z_DATA_ERROR;
goto inf_leave;
- default: /* can't happen, but makes compilers happy */
+ default:
+ /* can't happen, but makes compilers happy */
ret = Z_STREAM_ERROR;
goto inf_leave;
}
- /* Return unused input */
+ /* Write leftover output and return unused input */
inf_leave:
+ if (left < state->wsize) {
+ if (out(out_desc, state->window, state->wsize - left) &&
+ ret == Z_STREAM_END)
+ ret = Z_BUF_ERROR;
+ }
strm->next_in = next;
strm->avail_in = have;
return ret;
/* extract wrap request from windowBits parameter */
if (windowBits < 0) {
+ if (windowBits < -15)
+ return Z_STREAM_ERROR;
wrap = 0;
windowBits = -windowBits;
}
if (copy > have) copy = have;
if (copy) {
if (state->head != Z_NULL &&
- state->head->extra != Z_NULL) {
- len = state->head->extra_len - state->length;
+ state->head->extra != Z_NULL &&
+ (len = state->head->extra_len - state->length) <
+ state->head->extra_max) {
zmemcpy(state->head->extra + len, next,
len + copy > state->head->extra_max ?
state->head->extra_max - len : copy);
#define MAXBITS 15
const char inflate_copyright[] =
- " inflate 1.2.12 Copyright 1995-2022 Mark Adler ";
+ " inflate 1.2.13 Copyright 1995-2022 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
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, 202};
+ 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 194, 65};
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,
/* Maximum size of the dynamic table. The maximum number of code structures is
1444, which is the sum of 852 for literal/length codes and 592 for distance
codes. These values were found by exhaustive searches using the program
- examples/enough.c found in the zlib distribtution. The arguments to that
+ 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.
$! 0.03 20091224 Add support for large file check
$! 0.04 20100110 Add new gzclose, gzlib, gzread, gzwrite
$! 0.05 20100221 Exchange zlibdefs.h by zconf.h.in
-$! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new exmples
+$! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new examples
$! subdir path, update module search in makefile.in
-$! 0.07 20120115 Triggered by work done by Alexey Chupahin completly redesigned
+$! 0.07 20120115 Triggered by work done by Alexey Chupahin completely redesigned
$! shared image creation
$! 0.08 20120219 Make it work on VAX again, pre-load missing symbols to shared
$! image
<?xml version="1.0" ?>
-<package name="zlib" version="1.2.12">
- <library name="zlib" dlversion="1.2.12" dlname="z">
+<package name="zlib" version="1.2.13">
+ <library name="zlib" dlversion="1.2.13" dlname="z">
<property name="description"> zip compression library </property>
<property name="include-target-dir" value="$(@PACKAGE/install-includedir)" />
s->bits_sent += (ulg)length;
/* If not enough room in bi_buf, use (valid) bits from bi_buf and
- * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
+ * (16 - bi_valid) bits from value, leaving (width - (16 - bi_valid))
* unused bits in value.
*/
if (s->bi_valid > (int)Buf_size - length) {
length = 0;
for (code = 0; code < LENGTH_CODES-1; code++) {
base_length[code] = length;
- for (n = 0; n < (1<<extra_lbits[code]); n++) {
+ for (n = 0; n < (1 << extra_lbits[code]); n++) {
_length_code[length++] = (uch)code;
}
}
* in two different ways: code 284 + 5 bits or code 285, so we
* overwrite length_code[255] to use the best encoding:
*/
- _length_code[length-1] = (uch)code;
+ _length_code[length - 1] = (uch)code;
/* Initialize the mapping dist (0..32K) -> dist code (0..29) */
dist = 0;
for (code = 0 ; code < 16; code++) {
base_dist[code] = dist;
- for (n = 0; n < (1<<extra_dbits[code]); n++) {
+ for (n = 0; n < (1 << extra_dbits[code]); n++) {
_dist_code[dist++] = (uch)code;
}
}
dist >>= 7; /* from now on, all distances are divided by 128 */
for ( ; code < D_CODES; code++) {
base_dist[code] = dist << 7;
- for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
+ for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
_dist_code[256 + dist++] = (uch)code;
}
}
- Assert (dist == 256, "tr_static_init: 256+dist != 512");
+ Assert (dist == 256, "tr_static_init: 256 + dist != 512");
/* Construct the codes of the static literal tree */
for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
}
/* ===========================================================================
- * Genererate the file trees.h describing the static trees.
+ * Generate the file trees.h describing the static trees.
*/
#ifdef GEN_TREES_H
# ifndef ZLIB_DEBUG
# define SEPARATOR(i, last, width) \
((i) == (last)? "\n};\n\n" : \
- ((i) % (width) == (width)-1 ? ",\n" : ", "))
+ ((i) % (width) == (width) - 1 ? ",\n" : ", "))
void gen_trees_header()
{
while (j <= s->heap_len) {
/* Set j to the smallest of the two sons: */
if (j < s->heap_len &&
- smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
+ smaller(tree, s->heap[j + 1], s->heap[j], s->depth)) {
j++;
}
/* Exit if v is smaller than both sons */
*/
tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
- for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
+ for (h = s->heap_max + 1; h < HEAP_SIZE; h++) {
n = s->heap[h];
bits = tree[tree[n].Dad].Len + 1;
if (bits > max_length) bits = max_length, overflow++;
s->bl_count[bits]++;
xbits = 0;
- if (n >= base) xbits = extra[n-base];
+ if (n >= base) xbits = extra[n - base];
f = tree[n].Freq;
s->opt_len += (ulg)f * (unsigned)(bits + xbits);
if (stree) s->static_len += (ulg)f * (unsigned)(stree[n].Len + xbits);
/* Find the first bit length which could increase: */
do {
- bits = max_length-1;
+ bits = max_length - 1;
while (s->bl_count[bits] == 0) bits--;
- s->bl_count[bits]--; /* move one leaf down the tree */
- s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
+ s->bl_count[bits]--; /* move one leaf down the tree */
+ s->bl_count[bits + 1] += 2; /* move one overflow item as its brother */
s->bl_count[max_length]--;
/* The brother of the overflow item also moves one step up,
* but this does not affect bl_count[max_length]
* OUT assertion: the field code is set for all tree elements of non
* zero code length.
*/
-local void gen_codes (tree, max_code, bl_count)
+local void gen_codes(tree, max_code, bl_count)
ct_data *tree; /* the tree to decorate */
int max_code; /* largest code with non zero frequency */
ushf *bl_count; /* number of codes at each bit length */
* without bit reversal.
*/
for (bits = 1; bits <= MAX_BITS; bits++) {
- code = (code + bl_count[bits-1]) << 1;
+ code = (code + bl_count[bits - 1]) << 1;
next_code[bits] = (ush)code;
}
/* Check that the bit counts in bl_count are consistent. The last code
* must be all ones.
*/
- Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+ Assert (code + bl_count[MAX_BITS] - 1 == (1 << MAX_BITS) - 1,
"inconsistent bit counts");
Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
tree[n].Code = (ush)bi_reverse(next_code[len]++, len);
Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
- n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+ n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len] - 1));
}
}
int node; /* new node being created */
/* Construct the initial heap, with least frequent element in
- * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+ * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n + 1].
* heap[0] is not used.
*/
s->heap_len = 0, s->heap_max = HEAP_SIZE;
}
desc->max_code = max_code;
- /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+ /* The elements heap[heap_len/2 + 1 .. heap_len] are leaves of the tree,
* establish sub-heaps of increasing lengths:
*/
for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
* Scan a literal or distance tree to determine the frequencies of the codes
* in the bit length tree.
*/
-local void scan_tree (s, tree, max_code)
+local void scan_tree(s, tree, max_code)
deflate_state *s;
ct_data *tree; /* the tree to be scanned */
int max_code; /* and its largest code of non zero frequency */
int min_count = 4; /* min repeat count */
if (nextlen == 0) max_count = 138, min_count = 3;
- tree[max_code+1].Len = (ush)0xffff; /* guard */
+ tree[max_code + 1].Len = (ush)0xffff; /* guard */
for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
+ curlen = nextlen; nextlen = tree[n + 1].Len;
if (++count < max_count && curlen == nextlen) {
continue;
} else if (count < min_count) {
* Send a literal or distance tree in compressed form, using the codes in
* bl_tree.
*/
-local void send_tree (s, tree, max_code)
+local void send_tree(s, tree, max_code)
deflate_state *s;
ct_data *tree; /* the tree to be scanned */
int max_code; /* and its largest code of non zero frequency */
int max_count = 7; /* max repeat count */
int min_count = 4; /* min repeat count */
- /* tree[max_code+1].Len = -1; */ /* guard already set */
+ /* tree[max_code + 1].Len = -1; */ /* guard already set */
if (nextlen == 0) max_count = 138, min_count = 3;
for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
+ curlen = nextlen; nextlen = tree[n + 1].Len;
if (++count < max_count && curlen == nextlen) {
continue;
} else if (count < min_count) {
send_code(s, curlen, s->bl_tree); count--;
}
Assert(count >= 3 && count <= 6, " 3_6?");
- send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
+ send_code(s, REP_3_6, s->bl_tree); send_bits(s, count - 3, 2);
} else if (count <= 10) {
- send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
+ send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count - 3, 3);
} else {
- send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
+ send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count - 11, 7);
}
count = 0; prevlen = curlen;
if (nextlen == 0) {
/* Build the bit length tree: */
build_tree(s, (tree_desc *)(&(s->bl_desc)));
- /* opt_len now includes the length of the tree representations, except
- * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+ /* opt_len now includes the length of the tree representations, except the
+ * lengths of the bit lengths codes and the 5 + 5 + 4 bits for the counts.
*/
/* Determine the number of bit length codes to send. The pkzip format
if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
}
/* Update opt_len to include the bit length tree and counts */
- s->opt_len += 3*((ulg)max_blindex+1) + 5+5+4;
+ s->opt_len += 3*((ulg)max_blindex + 1) + 5 + 5 + 4;
Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
s->opt_len, s->static_len));
Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
"too many codes");
Tracev((stderr, "\nbl counts: "));
- send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
- send_bits(s, dcodes-1, 5);
- send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */
+ send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
+ send_bits(s, dcodes - 1, 5);
+ send_bits(s, blcodes - 4, 4); /* not -3 as stated in appnote.txt */
for (rank = 0; rank < blcodes; rank++) {
Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
}
Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
- send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
+ send_tree(s, (ct_data *)s->dyn_ltree, lcodes - 1); /* literal tree */
Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
- send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
+ send_tree(s, (ct_data *)s->dyn_dtree, dcodes - 1); /* distance tree */
Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}
ulg stored_len; /* length of input block */
int last; /* one if this is the last block for a file */
{
- send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */
+ send_bits(s, (STORED_BLOCK<<1) + last, 3); /* send block type */
bi_windup(s); /* align on byte boundary */
put_short(s, (ush)stored_len);
put_short(s, (ush)~stored_len);
s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
s->compressed_len += (stored_len + 4) << 3;
s->bits_sent += 2*16;
- s->bits_sent += stored_len<<3;
+ s->bits_sent += stored_len << 3;
#endif
}
max_blindex = build_bl_tree(s);
/* Determine the best encoding. Compute the block lengths in bytes. */
- opt_lenb = (s->opt_len+3+7)>>3;
- static_lenb = (s->static_len+3+7)>>3;
+ opt_lenb = (s->opt_len + 3 + 7) >> 3;
+ static_lenb = (s->static_len + 3 + 7) >> 3;
Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
s->sym_next / 3));
- if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
+#ifndef FORCE_STATIC
+ if (static_lenb <= opt_lenb || s->strategy == Z_FIXED)
+#endif
+ opt_lenb = static_lenb;
} else {
Assert(buf != (char*)0, "lost buf");
#ifdef FORCE_STORED
if (buf != (char*)0) { /* force stored block */
#else
- if (stored_len+4 <= opt_lenb && buf != (char*)0) {
+ if (stored_len + 4 <= opt_lenb && buf != (char*)0) {
/* 4: two words for the lengths */
#endif
/* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
*/
_tr_stored_block(s, buf, stored_len, last);
-#ifdef FORCE_STATIC
- } else if (static_lenb >= 0) { /* force static trees */
-#else
- } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
-#endif
- send_bits(s, (STATIC_TREES<<1)+last, 3);
+ } else if (static_lenb == opt_lenb) {
+ send_bits(s, (STATIC_TREES<<1) + last, 3);
compress_block(s, (const ct_data *)static_ltree,
(const ct_data *)static_dtree);
#ifdef ZLIB_DEBUG
s->compressed_len += 3 + s->static_len;
#endif
} else {
- send_bits(s, (DYN_TREES<<1)+last, 3);
- send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
- max_blindex+1);
+ send_bits(s, (DYN_TREES<<1) + last, 3);
+ send_all_trees(s, s->l_desc.max_code + 1, s->d_desc.max_code + 1,
+ max_blindex + 1);
compress_block(s, (const ct_data *)s->dyn_ltree,
(const ct_data *)s->dyn_dtree);
#ifdef ZLIB_DEBUG
s->compressed_len += 7; /* align on byte boundary */
#endif
}
- Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
- s->compressed_len-7*last));
+ Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len >> 3,
+ s->compressed_len - 7*last));
}
/* ===========================================================================
* Save the match info and tally the frequency counts. Return true if
* the current block must be flushed.
*/
-int ZLIB_INTERNAL _tr_tally (s, dist, lc)
+int ZLIB_INTERNAL _tr_tally(s, dist, lc)
deflate_state *s;
unsigned dist; /* distance of matched string */
- unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */
+ unsigned lc; /* match length - MIN_MATCH or unmatched char (dist==0) */
{
- s->sym_buf[s->sym_next++] = dist;
- s->sym_buf[s->sym_next++] = dist >> 8;
- s->sym_buf[s->sym_next++] = lc;
+ 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;
if (dist == 0) {
/* lc is the unmatched char */
s->dyn_ltree[lc].Freq++;
(ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
(ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");
- s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
+ s->dyn_ltree[_length_code[lc] + LITERALS + 1].Freq++;
s->dyn_dtree[d_code(dist)].Freq++;
}
return (s->sym_next == s->sym_end);
} else {
/* Here, lc is the match length - MIN_MATCH */
code = _length_code[lc];
- send_code(s, code+LITERALS+1, ltree); /* send the length code */
+ send_code(s, code + LITERALS + 1, ltree); /* send length code */
extra = extra_lbits[code];
if (extra != 0) {
lc -= base_length[code];
s->bi_buf = 0;
s->bi_valid = 0;
#ifdef ZLIB_DEBUG
- s->bits_sent = (s->bits_sent+7) & ~7;
+ s->bits_sent = (s->bits_sent + 7) & ~7;
#endif
}
Z_DATA_ERROR if the input data was corrupted, including if the input data is
an incomplete zlib stream.
*/
-int ZEXPORT uncompress2 (dest, destLen, source, sourceLen)
+int ZEXPORT uncompress2(dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
err;
}
-int ZEXPORT uncompress (dest, destLen, source, sourceLen)
+int ZEXPORT uncompress(dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
+# define crc32_combine_gen z_crc32_combine_gen
+# define crc32_combine_gen64 z_crc32_combine_gen64
+# define crc32_combine_op z_crc32_combine_op
# define crc32_z z_crc32_z
# define deflate z_deflate
# define deflateBound z_deflateBound
# ifdef FAR
# undef FAR
# endif
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+# endif
# include <windows.h>
/* No need for _export, use ZLIB.DEF instead. */
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
# undef _LARGEFILE64_SOURCE
#endif
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-# define Z_HAVE_UNISTD_H
+#ifndef Z_HAVE_UNISTD_H
+# ifdef __WATCOMC__
+# define Z_HAVE_UNISTD_H
+# endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+# if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+# define Z_HAVE_UNISTD_H
+# endif
#endif
#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+# if defined(Z_HAVE_UNISTD_H)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
+# define crc32_combine_gen z_crc32_combine_gen
+# define crc32_combine_gen64 z_crc32_combine_gen64
+# define crc32_combine_op z_crc32_combine_op
# define crc32_z z_crc32_z
# define deflate z_deflate
# define deflateBound z_deflateBound
# ifdef FAR
# undef FAR
# endif
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+# endif
# include <windows.h>
/* No need for _export, use ZLIB.DEF instead. */
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
# undef _LARGEFILE64_SOURCE
#endif
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-# define Z_HAVE_UNISTD_H
+#ifndef Z_HAVE_UNISTD_H
+# ifdef __WATCOMC__
+# define Z_HAVE_UNISTD_H
+# endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+# if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+# define Z_HAVE_UNISTD_H
+# endif
#endif
#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+# if defined(Z_HAVE_UNISTD_H)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
+# define crc32_combine_gen z_crc32_combine_gen
+# define crc32_combine_gen64 z_crc32_combine_gen64
+# define crc32_combine_op z_crc32_combine_op
# define crc32_z z_crc32_z
# define deflate z_deflate
# define deflateBound z_deflateBound
# ifdef FAR
# undef FAR
# endif
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+# endif
# include <windows.h>
/* No need for _export, use ZLIB.DEF instead. */
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
# undef _LARGEFILE64_SOURCE
#endif
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-# define Z_HAVE_UNISTD_H
+#ifndef Z_HAVE_UNISTD_H
+# ifdef __WATCOMC__
+# define Z_HAVE_UNISTD_H
+# endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+# if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+# define Z_HAVE_UNISTD_H
+# endif
#endif
#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+# if defined(Z_HAVE_UNISTD_H)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
-.TH ZLIB 3 "27 Mar 2022"
+.TH ZLIB 3 "13 Oct 2022"
.SH NAME
zlib \- compression/decompression library
.SH SYNOPSIS
Send questions and/or comments to zlib@gzip.org,
or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
.SH AUTHORS AND LICENSE
-Version 1.2.12
+Version 1.2.13
.LP
Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
.LP
/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.2.12, March 11th, 2022
+ version 1.2.13, October 13th, 2022
Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
extern "C" {
#endif
-#define ZLIB_VERSION "1.2.12"
-#define ZLIB_VERNUM 0x12c0
+#define ZLIB_VERSION "1.2.13"
+#define ZLIB_VERNUM 0x12d0
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 12
+#define ZLIB_VER_REVISION 13
#define ZLIB_VER_SUBREVISION 0
/*
== 0), or after each call of deflate(). If deflate returns Z_OK and with
zero avail_out, it must be called again after making room in the output
buffer because there might be more output pending. See deflatePending(),
- which can be used if desired to determine whether or not there is more ouput
+ which can be used if desired to determine whether or not there is more output
in that case.
Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
to dictionary. dictionary must have enough space, where 32768 bytes is
always enough. If deflateGetDictionary() is called with dictionary equal to
Z_NULL, then only the dictionary length is returned, and nothing is copied.
- Similary, if dictLength is Z_NULL, then it is not set.
+ Similarly, if dictLength is Z_NULL, then it is not set.
deflateGetDictionary() may return a length less than the window size, even
when more than the window size in input has been provided. It may return up
to dictionary. dictionary must have enough space, where 32768 bytes is
always enough. If inflateGetDictionary() is called with dictionary equal to
Z_NULL, then only the dictionary length is returned, and nothing is copied.
- Similary, if dictLength is Z_NULL, then it is not set.
+ Similarly, if dictLength is Z_NULL, then it is not set.
inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
stream state is inconsistent.
In the event that the end of file is reached and only a partial item is
available at the end, i.e. the remaining uncompressed data length is not a
- multiple of size, then the final partial item is nevetheless read into buf
+ multiple of size, then the final partial item is nevertheless read into buf
and the end-of-file flag is set. The length of the partial item read is not
provided, but could be inferred from the result of gztell(). This behavior
is the same as the behavior of fread() implementations in common libraries,
but it prevents the direct use of gzfread() to read a concurrently written
- file, reseting and retrying on end-of-file, when size is not 1.
+ file, resetting and retrying on end-of-file, when size is not 1.
*/
ZEXTERN int ZEXPORT gzwrite OF((gzFile file, voidpc buf, unsigned len));
ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table OF((void));
ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));
ZEXTERN int ZEXPORT inflateValidate OF((z_streamp, int));
-ZEXTERN unsigned long ZEXPORT inflateCodesUsed OF ((z_streamp));
+ZEXTERN unsigned long ZEXPORT inflateCodesUsed OF((z_streamp));
ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp));
ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp));
#if defined(_WIN32) && !defined(Z_SOLO)
# TODO
#
-# Asumes no function pointer parameters. unless they are typedefed.
+# Assumes no function pointer parameters. unless they are typedefed.
# Assumes no literal strings that look like function definitions
# Assumes functions start at the beginning of a line
no warnings;
- # Strip C & C++ coments
+ # Strip C & C++ comments
# From the perlfaq
$_[0] =~
#ifdef ZLIB_DEBUG
flags += 1 << 8;
#endif
+ /*
#if defined(ASMV) || defined(ASMINF)
flags += 1 << 9;
#endif
+ */
#ifdef ZLIB_WINAPI
flags += 1 << 10;
#endif
# endif
int ZLIB_INTERNAL z_verbose = verbose;
-void ZLIB_INTERNAL z_error (m)
+void ZLIB_INTERNAL z_error(m)
char *m;
{
fprintf(stderr, "%s\n", m);
* a protected system like OS/2. Use Microsoft C instead.
*/
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size)
{
voidpf buf;
ulg bsize = (ulg)items*size;
return buf;
}
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
{
int n;
# define _hfree hfree
#endif
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, uInt items, uInt size)
{
(void)opaque;
return _halloc((long)items, size);
}
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
{
(void)opaque;
_hfree(ptr);
extern void free OF((voidpf ptr));
#endif
-voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
+voidpf ZLIB_INTERNAL zcalloc(opaque, items, size)
voidpf opaque;
unsigned items;
unsigned size;
(voidpf)calloc(items, size);
}
-void ZLIB_INTERNAL zcfree (opaque, ptr)
+void ZLIB_INTERNAL zcfree(opaque, ptr)
voidpf opaque;
voidpf ptr;
{
projects / platform / upstream / dotnet / runtime.git / commitdiff