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internal-z
| Author | SHA1 | Date |
|---|---|---|
Moazin Khatti
|
3081146633 | |
|
Moazin Khatti
|
545869da73 |
|
|
@ -1,48 +1,186 @@
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|||
/* adler32.c -- compute the Adler-32 checksum of a data stream
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* Copyright (C) 1995-2002 Mark Adler
|
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* Copyright (C) 1995-2011, 2016 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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/* @(#) $Id$ */
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#include "zlib.h"
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#include "zutil.h"
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#define BASE 65521L /* largest prime smaller than 65536 */
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local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
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#define BASE 65521U /* largest prime smaller than 65536 */
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#define NMAX 5552
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/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
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#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}
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#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
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#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
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#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
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#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
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#define DO16(buf) DO8(buf,0); DO8(buf,8);
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/* use NO_DIVIDE if your processor does not do division in hardware --
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try it both ways to see which is faster */
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#ifdef NO_DIVIDE
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/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
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(thank you to John Reiser for pointing this out) */
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# define CHOP(a) \
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do { \
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unsigned long tmp = a >> 16; \
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a &= 0xffffUL; \
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a += (tmp << 4) - tmp; \
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} while (0)
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# define MOD28(a) \
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do { \
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CHOP(a); \
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if (a >= BASE) a -= BASE; \
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} while (0)
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# define MOD(a) \
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do { \
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CHOP(a); \
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MOD28(a); \
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} while (0)
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# define MOD63(a) \
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do { /* this assumes a is not negative */ \
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z_off64_t tmp = a >> 32; \
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a &= 0xffffffffL; \
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a += (tmp << 8) - (tmp << 5) + tmp; \
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tmp = a >> 16; \
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a &= 0xffffL; \
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a += (tmp << 4) - tmp; \
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tmp = a >> 16; \
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a &= 0xffffL; \
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a += (tmp << 4) - tmp; \
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if (a >= BASE) a -= BASE; \
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} while (0)
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#else
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# define MOD(a) a %= BASE
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# define MOD28(a) a %= BASE
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# define MOD63(a) a %= BASE
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#endif
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/* ========================================================================= */
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ZEXPORT(uLong) adler32( /* adler, buf, len) */
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uLong adler,
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const Bytef *buf,
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uInt len )
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uLong ZEXPORT adler32_z(adler, buf, len)
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uLong adler;
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const Bytef *buf;
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z_size_t len;
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{
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unsigned long s1 = adler & 0xffff;
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unsigned long s2 = (adler >> 16) & 0xffff;
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int k;
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unsigned long sum2;
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unsigned n;
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if (buf == Z_NULL) return 1L;
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/* split Adler-32 into component sums */
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sum2 = (adler >> 16) & 0xffff;
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adler &= 0xffff;
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while (len > 0) {
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k = len < NMAX ? len : NMAX;
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len -= k;
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while (k >= 16) {
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/* in case user likes doing a byte at a time, keep it fast */
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if (len == 1) {
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adler += buf[0];
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if (adler >= BASE)
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adler -= BASE;
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sum2 += adler;
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if (sum2 >= BASE)
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sum2 -= BASE;
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return adler | (sum2 << 16);
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}
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/* initial Adler-32 value (deferred check for len == 1 speed) */
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if (buf == Z_NULL)
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return 1L;
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/* in case short lengths are provided, keep it somewhat fast */
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if (len < 16) {
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while (len--) {
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adler += *buf++;
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sum2 += adler;
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}
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if (adler >= BASE)
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adler -= BASE;
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MOD28(sum2); /* only added so many BASE's */
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return adler | (sum2 << 16);
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}
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/* do length NMAX blocks -- requires just one modulo operation */
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while (len >= NMAX) {
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len -= NMAX;
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n = NMAX / 16; /* NMAX is divisible by 16 */
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do {
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DO16(buf); /* 16 sums unrolled */
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buf += 16;
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} while (--n);
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MOD(adler);
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MOD(sum2);
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}
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/* do remaining bytes (less than NMAX, still just one modulo) */
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if (len) { /* avoid modulos if none remaining */
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while (len >= 16) {
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len -= 16;
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DO16(buf);
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buf += 16;
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k -= 16;
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}
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if (k != 0) do {
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s1 += *buf++;
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s2 += s1;
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} while (--k);
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s1 %= BASE;
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s2 %= BASE;
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while (len--) {
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adler += *buf++;
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sum2 += adler;
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}
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MOD(adler);
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MOD(sum2);
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}
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return (s2 << 16) | s1;
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/* return recombined sums */
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return adler | (sum2 << 16);
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}
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/* ========================================================================= */
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uLong ZEXPORT adler32(adler, buf, len)
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uLong adler;
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const Bytef *buf;
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uInt len;
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{
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return adler32_z(adler, buf, len);
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}
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/* ========================================================================= */
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local uLong adler32_combine_(adler1, adler2, len2)
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uLong adler1;
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uLong adler2;
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z_off64_t len2;
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{
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unsigned long sum1;
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unsigned long sum2;
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unsigned rem;
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/* for negative len, return invalid adler32 as a clue for debugging */
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if (len2 < 0)
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return 0xffffffffUL;
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/* the derivation of this formula is left as an exercise for the reader */
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MOD63(len2); /* assumes len2 >= 0 */
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rem = (unsigned)len2;
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sum1 = adler1 & 0xffff;
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sum2 = rem * sum1;
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MOD(sum2);
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sum1 += (adler2 & 0xffff) + BASE - 1;
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sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
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if (sum1 >= BASE) sum1 -= BASE;
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if (sum1 >= BASE) sum1 -= BASE;
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if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1);
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if (sum2 >= BASE) sum2 -= BASE;
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return sum1 | (sum2 << 16);
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}
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/* ========================================================================= */
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uLong ZEXPORT adler32_combine(adler1, adler2, len2)
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uLong adler1;
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uLong adler2;
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z_off_t len2;
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{
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return adler32_combine_(adler1, adler2, len2);
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}
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uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
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uLong adler1;
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uLong adler2;
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z_off64_t len2;
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{
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return adler32_combine_(adler1, adler2, len2);
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}
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|
|
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|
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@ -0,0 +1,86 @@
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/* compress.c -- compress a memory buffer
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* Copyright (C) 1995-2005, 2014, 2016 Jean-loup Gailly, Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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/* @(#) $Id$ */
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#define ZLIB_INTERNAL
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#include "zlib.h"
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/* ===========================================================================
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Compresses the source buffer into the destination buffer. The level
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parameter has the same meaning as in deflateInit. sourceLen is the byte
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length of the source buffer. Upon entry, destLen is the total size of the
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destination buffer, which must be at least 0.1% larger than sourceLen plus
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12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
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compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
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memory, Z_BUF_ERROR if there was not enough room in the output buffer,
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Z_STREAM_ERROR if the level parameter is invalid.
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*/
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int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
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Bytef *dest;
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uLongf *destLen;
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const Bytef *source;
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uLong sourceLen;
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int level;
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{
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z_stream stream;
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int err;
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const uInt max = (uInt)-1;
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uLong left;
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left = *destLen;
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*destLen = 0;
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stream.zalloc = (alloc_func)0;
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stream.zfree = (free_func)0;
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stream.opaque = (voidpf)0;
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err = deflateInit(&stream, level);
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if (err != Z_OK) return err;
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stream.next_out = dest;
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stream.avail_out = 0;
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stream.next_in = (z_const Bytef *)source;
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stream.avail_in = 0;
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do {
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if (stream.avail_out == 0) {
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stream.avail_out = left > (uLong)max ? max : (uInt)left;
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left -= stream.avail_out;
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}
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if (stream.avail_in == 0) {
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stream.avail_in = sourceLen > (uLong)max ? max : (uInt)sourceLen;
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sourceLen -= stream.avail_in;
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}
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err = deflate(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH);
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} while (err == Z_OK);
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*destLen = stream.total_out;
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deflateEnd(&stream);
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return err == Z_STREAM_END ? Z_OK : err;
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}
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/* ===========================================================================
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*/
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int ZEXPORT compress (dest, destLen, source, sourceLen)
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Bytef *dest;
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uLongf *destLen;
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const Bytef *source;
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uLong sourceLen;
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{
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return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
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}
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/* ===========================================================================
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If the default memLevel or windowBits for deflateInit() is changed, then
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this function needs to be updated.
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*/
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uLong ZEXPORT compressBound (sourceLen)
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uLong sourceLen;
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{
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return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
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(sourceLen >> 25) + 13;
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}
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|
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@ -0,0 +1,442 @@
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/* crc32.c -- compute the CRC-32 of a data stream
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* Copyright (C) 1995-2006, 2010, 2011, 2012, 2016 Mark Adler
|
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* For conditions of distribution and use, see copyright notice in zlib.h
|
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*
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||||
* Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster
|
||||
* CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing
|
||||
* tables for updating the shift register in one step with three exclusive-ors
|
||||
* instead of four steps with four exclusive-ors. This results in about a
|
||||
* factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.
|
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*/
|
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|
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/* @(#) $Id$ */
|
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|
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/*
|
||||
Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
|
||||
protection on the static variables used to control the first-use generation
|
||||
of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should
|
||||
first call get_crc_table() to initialize the tables before allowing more than
|
||||
one thread to use crc32().
|
||||
|
||||
DYNAMIC_CRC_TABLE and MAKECRCH can be #defined to write out crc32.h.
|
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*/
|
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|
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#ifdef MAKECRCH
|
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# include <stdio.h>
|
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# ifndef DYNAMIC_CRC_TABLE
|
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# define DYNAMIC_CRC_TABLE
|
||||
# endif /* !DYNAMIC_CRC_TABLE */
|
||||
#endif /* MAKECRCH */
|
||||
|
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#include "zutil.h" /* for STDC and FAR definitions */
|
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|
||||
/* Definitions for doing the crc four data bytes at a time. */
|
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#if !defined(NOBYFOUR) && defined(Z_U4)
|
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# define BYFOUR
|
||||
#endif
|
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#ifdef BYFOUR
|
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local unsigned long crc32_little OF((unsigned long,
|
||||
const unsigned char FAR *, z_size_t));
|
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local unsigned long crc32_big OF((unsigned long,
|
||||
const unsigned char FAR *, z_size_t));
|
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# define TBLS 8
|
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#else
|
||||
# define TBLS 1
|
||||
#endif /* BYFOUR */
|
||||
|
||||
/* Local functions for crc concatenation */
|
||||
local unsigned long gf2_matrix_times OF((unsigned long *mat,
|
||||
unsigned long vec));
|
||||
local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
|
||||
local uLong crc32_combine_ OF((uLong crc1, uLong crc2, z_off64_t len2));
|
||||
|
||||
|
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#ifdef DYNAMIC_CRC_TABLE
|
||||
|
||||
local volatile int crc_table_empty = 1;
|
||||
local z_crc_t FAR crc_table[TBLS][256];
|
||||
local void make_crc_table OF((void));
|
||||
#ifdef MAKECRCH
|
||||
local void write_table OF((FILE *, const z_crc_t FAR *));
|
||||
#endif /* MAKECRCH */
|
||||
/*
|
||||
Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
|
||||
x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.
|
||||
|
||||
Polynomials over GF(2) are represented in binary, one bit per coefficient,
|
||||
with the lowest powers in the most significant bit. Then adding polynomials
|
||||
is just exclusive-or, and multiplying a polynomial by x is a right shift by
|
||||
one. If we call the above polynomial p, and represent a byte as the
|
||||
polynomial q, also with the lowest power in the most significant bit (so the
|
||||
byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p,
|
||||
where a mod b means the remainder after dividing a by b.
|
||||
|
||||
This calculation is done using the shift-register method of multiplying and
|
||||
taking the remainder. The register is initialized to zero, and for each
|
||||
incoming bit, x^32 is added mod p to the register if the bit is a one (where
|
||||
x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by
|
||||
x (which is shifting right by one and adding x^32 mod p if the bit shifted
|
||||
out is a one). We start with the highest power (least significant bit) of
|
||||
q and repeat for all eight bits of q.
|
||||
|
||||
The first table is simply the CRC of all possible eight bit values. This is
|
||||
all the information needed to generate CRCs on data a byte at a time for all
|
||||
combinations of CRC register values and incoming bytes. The remaining tables
|
||||
allow for word-at-a-time CRC calculation for both big-endian and little-
|
||||
endian machines, where a word is four bytes.
|
||||
*/
|
||||
local void make_crc_table()
|
||||
{
|
||||
z_crc_t c;
|
||||
int n, k;
|
||||
z_crc_t poly; /* polynomial exclusive-or pattern */
|
||||
/* terms of polynomial defining this crc (except x^32): */
|
||||
static volatile int first = 1; /* flag to limit concurrent making */
|
||||
static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};
|
||||
|
||||
/* See if another task is already doing this (not thread-safe, but better
|
||||
than nothing -- significantly reduces duration of vulnerability in
|
||||
case the advice about DYNAMIC_CRC_TABLE is ignored) */
|
||||
if (first) {
|
||||
first = 0;
|
||||
|
||||
/* make exclusive-or pattern from polynomial (0xedb88320UL) */
|
||||
poly = 0;
|
||||
for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++)
|
||||
poly |= (z_crc_t)1 << (31 - p[n]);
|
||||
|
||||
/* generate a crc for every 8-bit value */
|
||||
for (n = 0; n < 256; n++) {
|
||||
c = (z_crc_t)n;
|
||||
for (k = 0; k < 8; k++)
|
||||
c = c & 1 ? poly ^ (c >> 1) : c >> 1;
|
||||
crc_table[0][n] = c;
|
||||
}
|
||||
|
||||
#ifdef BYFOUR
|
||||
/* generate crc for each value followed by one, two, and three zeros,
|
||||
and then the byte reversal of those as well as the first table */
|
||||
for (n = 0; n < 256; n++) {
|
||||
c = crc_table[0][n];
|
||||
crc_table[4][n] = ZSWAP32(c);
|
||||
for (k = 1; k < 4; k++) {
|
||||
c = crc_table[0][c & 0xff] ^ (c >> 8);
|
||||
crc_table[k][n] = c;
|
||||
crc_table[k + 4][n] = ZSWAP32(c);
|
||||
}
|
||||
}
|
||||
#endif /* BYFOUR */
|
||||
|
||||
crc_table_empty = 0;
|
||||
}
|
||||
else { /* not first */
|
||||
/* wait for the other guy to finish (not efficient, but rare) */
|
||||
while (crc_table_empty)
|
||||
;
|
||||
}
|
||||
|
||||
#ifdef MAKECRCH
|
||||
/* write out CRC tables to crc32.h */
|
||||
{
|
||||
FILE *out;
|
||||
|
||||
out = fopen("crc32.h", "w");
|
||||
if (out == NULL) return;
|
||||
fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n");
|
||||
fprintf(out, " * Generated automatically by crc32.c\n */\n\n");
|
||||
fprintf(out, "local const z_crc_t FAR ");
|
||||
fprintf(out, "crc_table[TBLS][256] =\n{\n {\n");
|
||||
write_table(out, crc_table[0]);
|
||||
# ifdef BYFOUR
|
||||
fprintf(out, "#ifdef BYFOUR\n");
|
||||
for (k = 1; k < 8; k++) {
|
||||
fprintf(out, " },\n {\n");
|
||||
write_table(out, crc_table[k]);
|
||||
}
|
||||
fprintf(out, "#endif\n");
|
||||
# endif /* BYFOUR */
|
||||
fprintf(out, " }\n};\n");
|
||||
fclose(out);
|
||||
}
|
||||
#endif /* MAKECRCH */
|
||||
}
|
||||
|
||||
#ifdef MAKECRCH
|
||||
local void write_table(out, table)
|
||||
FILE *out;
|
||||
const z_crc_t FAR *table;
|
||||
{
|
||||
int n;
|
||||
|
||||
for (n = 0; n < 256; n++)
|
||||
fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ",
|
||||
(unsigned long)(table[n]),
|
||||
n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", "));
|
||||
}
|
||||
#endif /* MAKECRCH */
|
||||
|
||||
#else /* !DYNAMIC_CRC_TABLE */
|
||||
/* ========================================================================
|
||||
* Tables of CRC-32s of all single-byte values, made by make_crc_table().
|
||||
*/
|
||||
#include "crc32.h"
|
||||
#endif /* DYNAMIC_CRC_TABLE */
|
||||
|
||||
/* =========================================================================
|
||||
* This function can be used by asm versions of crc32()
|
||||
*/
|
||||
const z_crc_t FAR * ZEXPORT get_crc_table()
|
||||
{
|
||||
#ifdef DYNAMIC_CRC_TABLE
|
||||
if (crc_table_empty)
|
||||
make_crc_table();
|
||||
#endif /* DYNAMIC_CRC_TABLE */
|
||||
return (const z_crc_t FAR *)crc_table;
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8)
|
||||
#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1
|
||||
|
||||
/* ========================================================================= */
|
||||
unsigned long ZEXPORT crc32_z(crc, buf, len)
|
||||
unsigned long crc;
|
||||
const unsigned char FAR *buf;
|
||||
z_size_t len;
|
||||
{
|
||||
if (buf == Z_NULL) return 0UL;
|
||||
|
||||
#ifdef DYNAMIC_CRC_TABLE
|
||||
if (crc_table_empty)
|
||||
make_crc_table();
|
||||
#endif /* DYNAMIC_CRC_TABLE */
|
||||
|
||||
#ifdef BYFOUR
|
||||
if (sizeof(void *) == sizeof(ptrdiff_t)) {
|
||||
z_crc_t endian;
|
||||
|
||||
endian = 1;
|
||||
if (*((unsigned char *)(&endian)))
|
||||
return crc32_little(crc, buf, len);
|
||||
else
|
||||
return crc32_big(crc, buf, len);
|
||||
}
|
||||
#endif /* BYFOUR */
|
||||
crc = crc ^ 0xffffffffUL;
|
||||
while (len >= 8) {
|
||||
DO8;
|
||||
len -= 8;
|
||||
}
|
||||
if (len) do {
|
||||
DO1;
|
||||
} while (--len);
|
||||
return crc ^ 0xffffffffUL;
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
unsigned long ZEXPORT crc32(crc, buf, len)
|
||||
unsigned long crc;
|
||||
const unsigned char FAR *buf;
|
||||
uInt len;
|
||||
{
|
||||
return crc32_z(crc, buf, len);
|
||||
}
|
||||
|
||||
#ifdef BYFOUR
|
||||
|
||||
/*
|
||||
This BYFOUR code accesses the passed unsigned char * buffer with a 32-bit
|
||||
integer pointer type. This violates the strict aliasing rule, where a
|
||||
compiler can assume, for optimization purposes, that two pointers to
|
||||
fundamentally different types won't ever point to the same memory. This can
|
||||
manifest as a problem only if one of the pointers is written to. This code
|
||||
only reads from those pointers. So long as this code remains isolated in
|
||||
this compilation unit, there won't be a problem. For this reason, this code
|
||||
should not be copied and pasted into a compilation unit in which other code
|
||||
writes to the buffer that is passed to these routines.
|
||||
*/
|
||||
|
||||
/* ========================================================================= */
|
||||
#define DOLIT4 c ^= *buf4++; \
|
||||
c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \
|
||||
crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24]
|
||||
#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4
|
||||
|
||||
/* ========================================================================= */
|
||||
local unsigned long crc32_little(crc, buf, len)
|
||||
unsigned long crc;
|
||||
const unsigned char FAR *buf;
|
||||
z_size_t len;
|
||||
{
|
||||
register z_crc_t c;
|
||||
register const z_crc_t FAR *buf4;
|
||||
|
||||
c = (z_crc_t)crc;
|
||||
c = ~c;
|
||||
while (len && ((ptrdiff_t)buf & 3)) {
|
||||
c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
|
||||
len--;
|
||||
}
|
||||
|
||||
buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
|
||||
while (len >= 32) {
|
||||
DOLIT32;
|
||||
len -= 32;
|
||||
}
|
||||
while (len >= 4) {
|
||||
DOLIT4;
|
||||
len -= 4;
|
||||
}
|
||||
buf = (const unsigned char FAR *)buf4;
|
||||
|
||||
if (len) do {
|
||||
c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
|
||||
} while (--len);
|
||||
c = ~c;
|
||||
return (unsigned long)c;
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
#define DOBIG4 c ^= *buf4++; \
|
||||
c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \
|
||||
crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24]
|
||||
#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4
|
||||
|
||||
/* ========================================================================= */
|
||||
local unsigned long crc32_big(crc, buf, len)
|
||||
unsigned long crc;
|
||||
const unsigned char FAR *buf;
|
||||
z_size_t len;
|
||||
{
|
||||
register z_crc_t c;
|
||||
register const z_crc_t FAR *buf4;
|
||||
|
||||
c = ZSWAP32((z_crc_t)crc);
|
||||
c = ~c;
|
||||
while (len && ((ptrdiff_t)buf & 3)) {
|
||||
c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
|
||||
len--;
|
||||
}
|
||||
|
||||
buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
|
||||
while (len >= 32) {
|
||||
DOBIG32;
|
||||
len -= 32;
|
||||
}
|
||||
while (len >= 4) {
|
||||
DOBIG4;
|
||||
len -= 4;
|
||||
}
|
||||
buf = (const unsigned char FAR *)buf4;
|
||||
|
||||
if (len) do {
|
||||
c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
|
||||
} while (--len);
|
||||
c = ~c;
|
||||
return (unsigned long)(ZSWAP32(c));
|
||||
}
|
||||
|
||||
#endif /* BYFOUR */
|
||||
|
||||
#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */
|
||||
|
||||
/* ========================================================================= */
|
||||
local unsigned long gf2_matrix_times(mat, vec)
|
||||
unsigned long *mat;
|
||||
unsigned long vec;
|
||||
{
|
||||
unsigned long sum;
|
||||
|
||||
sum = 0;
|
||||
while (vec) {
|
||||
if (vec & 1)
|
||||
sum ^= *mat;
|
||||
vec >>= 1;
|
||||
mat++;
|
||||
}
|
||||
return sum;
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
local void gf2_matrix_square(square, mat)
|
||||
unsigned long *square;
|
||||
unsigned long *mat;
|
||||
{
|
||||
int n;
|
||||
|
||||
for (n = 0; n < GF2_DIM; n++)
|
||||
square[n] = gf2_matrix_times(mat, mat[n]);
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
local uLong crc32_combine_(crc1, crc2, len2)
|
||||
uLong crc1;
|
||||
uLong crc2;
|
||||
z_off64_t len2;
|
||||
{
|
||||
int n;
|
||||
unsigned long row;
|
||||
unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */
|
||||
unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */
|
||||
|
||||
/* degenerate case (also disallow negative lengths) */
|
||||
if (len2 <= 0)
|
||||
return crc1;
|
||||
|
||||
/* put operator for one zero bit in odd */
|
||||
odd[0] = 0xedb88320UL; /* CRC-32 polynomial */
|
||||
row = 1;
|
||||
for (n = 1; n < GF2_DIM; n++) {
|
||||
odd[n] = row;
|
||||
row <<= 1;
|
||||
}
|
||||
|
||||
/* put operator for two zero bits in even */
|
||||
gf2_matrix_square(even, odd);
|
||||
|
||||
/* put operator for four zero bits in odd */
|
||||
gf2_matrix_square(odd, even);
|
||||
|
||||
/* apply len2 zeros to crc1 (first square will put the operator for one
|
||||
zero byte, eight zero bits, in even) */
|
||||
do {
|
||||
/* apply zeros operator for this bit of len2 */
|
||||
gf2_matrix_square(even, odd);
|
||||
if (len2 & 1)
|
||||
crc1 = gf2_matrix_times(even, crc1);
|
||||
len2 >>= 1;
|
||||
|
||||
/* if no more bits set, then done */
|
||||
if (len2 == 0)
|
||||
break;
|
||||
|
||||
/* another iteration of the loop with odd and even swapped */
|
||||
gf2_matrix_square(odd, even);
|
||||
if (len2 & 1)
|
||||
crc1 = gf2_matrix_times(odd, crc1);
|
||||
len2 >>= 1;
|
||||
|
||||
/* if no more bits set, then done */
|
||||
} while (len2 != 0);
|
||||
|
||||
/* return combined crc */
|
||||
crc1 ^= crc2;
|
||||
return crc1;
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
uLong ZEXPORT crc32_combine(crc1, crc2, len2)
|
||||
uLong crc1;
|
||||
uLong crc2;
|
||||
z_off_t len2;
|
||||
{
|
||||
return crc32_combine_(crc1, crc2, len2);
|
||||
}
|
||||
|
||||
uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
|
||||
uLong crc1;
|
||||
uLong crc2;
|
||||
z_off64_t len2;
|
||||
{
|
||||
return crc32_combine_(crc1, crc2, len2);
|
||||
}
|
||||
|
|
@ -0,0 +1,443 @@
|
|||
/* crc32.h -- tables for rapid CRC calculation
|
||||
* Generated automatically by crc32.c
|
||||
*/
|
||||
#ifndef Z_CRC32_H
|
||||
#define Z_CRC32_H
|
||||
local const z_crc_t FAR crc_table[TBLS][256] =
|
||||
{
|
||||
{
|
||||
0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
|
||||
0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
|
||||
0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
|
||||
0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
|
||||
0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
|
||||
0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
|
||||
0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
|
||||
0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
|
||||
0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
|
||||
0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
|
||||
0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
|
||||
0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
|
||||
0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
|
||||
0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
|
||||
0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
|
||||
0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
|
||||
0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
|
||||
0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
|
||||
0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
|
||||
0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
|
||||
0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
|
||||
0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
|
||||
0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
|
||||
0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
|
||||
0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
|
||||
0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
|
||||
0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
|
||||
0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
|
||||
0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
|
||||
0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
|
||||
0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
|
||||
0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
|
||||
0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
|
||||
0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
|
||||
0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
|
||||
0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
|
||||
0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
|
||||
0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
|
||||
0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
|
||||
0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
|
||||
0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
|
||||
0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
|
||||
0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
|
||||
0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
|
||||
0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
|
||||
0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
|
||||
0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
|
||||
0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
|
||||
0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
|
||||
0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
|
||||
0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
|
||||
0x2d02ef8dUL
|
||||
#ifdef BYFOUR
|
||||
},
|
||||
{
|
||||
0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL,
|
||||
0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL,
|
||||
0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL,
|
||||
0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL,
|
||||
0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL,
|
||||
0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL,
|
||||
0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL,
|
||||
0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL,
|
||||
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0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,
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0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,
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0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,
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0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,
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0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,
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0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,
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0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,
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0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,
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0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,
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0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,
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0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,
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0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL,
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0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL,
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0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL,
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0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL,
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0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL,
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0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL,
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0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL,
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0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL,
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0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL,
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0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL,
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0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL,
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0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL,
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0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL,
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0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL,
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0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL,
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0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL,
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0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL,
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0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL,
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0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL,
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0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL,
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0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL,
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0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL,
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0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL,
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0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL,
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0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL,
|
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0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL,
|
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0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL,
|
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0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL,
|
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0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL,
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0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL,
|
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0x9324fd72UL
|
||||
},
|
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{
|
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0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL,
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0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL,
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0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL,
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0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL,
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0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL,
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0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL,
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0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL,
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0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL,
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0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL,
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0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL,
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0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL,
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0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL,
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0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL,
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0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL,
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0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL,
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0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL,
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0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL,
|
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0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL,
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0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL,
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0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL,
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0x4fde63fcUL, 0x4e1c09cbUL, 0x4c5ab792UL, 0x4d98dda5UL, 0x46c49a98UL,
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0x4706f0afUL, 0x45404ef6UL, 0x448224c1UL, 0x41cd3244UL, 0x400f5873UL,
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0x4249e62aUL, 0x438b8c1dUL, 0x54f16850UL, 0x55330267UL, 0x5775bc3eUL,
|
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0x56b7d609UL, 0x53f8c08cUL, 0x523aaabbUL, 0x507c14e2UL, 0x51be7ed5UL,
|
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0x5ae239e8UL, 0x5b2053dfUL, 0x5966ed86UL, 0x58a487b1UL, 0x5deb9134UL,
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0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL,
|
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0xe2b1cfeeUL, 0xe373a5d9UL, 0xe63cb35cUL, 0xe7fed96bUL, 0xe5b86732UL,
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0xe47a0d05UL, 0xef264a38UL, 0xeee4200fUL, 0xeca29e56UL, 0xed60f461UL,
|
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0xe82fe2e4UL, 0xe9ed88d3UL, 0xebab368aUL, 0xea695cbdUL, 0xfd13b8f0UL,
|
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0xfcd1d2c7UL, 0xfe976c9eUL, 0xff5506a9UL, 0xfa1a102cUL, 0xfbd87a1bUL,
|
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0xf99ec442UL, 0xf85cae75UL, 0xf300e948UL, 0xf2c2837fUL, 0xf0843d26UL,
|
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0xf1465711UL, 0xf4094194UL, 0xf5cb2ba3UL, 0xf78d95faUL, 0xf64fffcdUL,
|
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0xd9785d60UL, 0xd8ba3757UL, 0xdafc890eUL, 0xdb3ee339UL, 0xde71f5bcUL,
|
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0xdfb39f8bUL, 0xddf521d2UL, 0xdc374be5UL, 0xd76b0cd8UL, 0xd6a966efUL,
|
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0xd4efd8b6UL, 0xd52db281UL, 0xd062a404UL, 0xd1a0ce33UL, 0xd3e6706aUL,
|
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0xd2241a5dUL, 0xc55efe10UL, 0xc49c9427UL, 0xc6da2a7eUL, 0xc7184049UL,
|
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0xc25756ccUL, 0xc3953cfbUL, 0xc1d382a2UL, 0xc011e895UL, 0xcb4dafa8UL,
|
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0xca8fc59fUL, 0xc8c97bc6UL, 0xc90b11f1UL, 0xcc440774UL, 0xcd866d43UL,
|
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0xcfc0d31aUL, 0xce02b92dUL, 0x91af9640UL, 0x906dfc77UL, 0x922b422eUL,
|
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0x93e92819UL, 0x96a63e9cUL, 0x976454abUL, 0x9522eaf2UL, 0x94e080c5UL,
|
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0x9fbcc7f8UL, 0x9e7eadcfUL, 0x9c381396UL, 0x9dfa79a1UL, 0x98b56f24UL,
|
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0x99770513UL, 0x9b31bb4aUL, 0x9af3d17dUL, 0x8d893530UL, 0x8c4b5f07UL,
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0x8e0de15eUL, 0x8fcf8b69UL, 0x8a809decUL, 0x8b42f7dbUL, 0x89044982UL,
|
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0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL,
|
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0x8493cc54UL, 0x8551a663UL, 0x8717183aUL, 0x86d5720dUL, 0xa9e2d0a0UL,
|
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0xa820ba97UL, 0xaa6604ceUL, 0xaba46ef9UL, 0xaeeb787cUL, 0xaf29124bUL,
|
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0xad6fac12UL, 0xacadc625UL, 0xa7f18118UL, 0xa633eb2fUL, 0xa4755576UL,
|
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0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL,
|
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0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL,
|
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0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL,
|
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0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL,
|
||||
0xbe9834edUL
|
||||
},
|
||||
{
|
||||
0x00000000UL, 0xb8bc6765UL, 0xaa09c88bUL, 0x12b5afeeUL, 0x8f629757UL,
|
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0x37def032UL, 0x256b5fdcUL, 0x9dd738b9UL, 0xc5b428efUL, 0x7d084f8aUL,
|
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0x6fbde064UL, 0xd7018701UL, 0x4ad6bfb8UL, 0xf26ad8ddUL, 0xe0df7733UL,
|
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0x58631056UL, 0x5019579fUL, 0xe8a530faUL, 0xfa109f14UL, 0x42acf871UL,
|
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0xdf7bc0c8UL, 0x67c7a7adUL, 0x75720843UL, 0xcdce6f26UL, 0x95ad7f70UL,
|
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0x2d111815UL, 0x3fa4b7fbUL, 0x8718d09eUL, 0x1acfe827UL, 0xa2738f42UL,
|
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0xb0c620acUL, 0x087a47c9UL, 0xa032af3eUL, 0x188ec85bUL, 0x0a3b67b5UL,
|
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0xb28700d0UL, 0x2f503869UL, 0x97ec5f0cUL, 0x8559f0e2UL, 0x3de59787UL,
|
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0x658687d1UL, 0xdd3ae0b4UL, 0xcf8f4f5aUL, 0x7733283fUL, 0xeae41086UL,
|
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0x525877e3UL, 0x40edd80dUL, 0xf851bf68UL, 0xf02bf8a1UL, 0x48979fc4UL,
|
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0x5a22302aUL, 0xe29e574fUL, 0x7f496ff6UL, 0xc7f50893UL, 0xd540a77dUL,
|
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0x6dfcc018UL, 0x359fd04eUL, 0x8d23b72bUL, 0x9f9618c5UL, 0x272a7fa0UL,
|
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0xbafd4719UL, 0x0241207cUL, 0x10f48f92UL, 0xa848e8f7UL, 0x9b14583dUL,
|
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0x23a83f58UL, 0x311d90b6UL, 0x89a1f7d3UL, 0x1476cf6aUL, 0xaccaa80fUL,
|
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0xbe7f07e1UL, 0x06c36084UL, 0x5ea070d2UL, 0xe61c17b7UL, 0xf4a9b859UL,
|
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0x4c15df3cUL, 0xd1c2e785UL, 0x697e80e0UL, 0x7bcb2f0eUL, 0xc377486bUL,
|
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0xcb0d0fa2UL, 0x73b168c7UL, 0x6104c729UL, 0xd9b8a04cUL, 0x446f98f5UL,
|
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0xfcd3ff90UL, 0xee66507eUL, 0x56da371bUL, 0x0eb9274dUL, 0xb6054028UL,
|
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0xa4b0efc6UL, 0x1c0c88a3UL, 0x81dbb01aUL, 0x3967d77fUL, 0x2bd27891UL,
|
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0x936e1ff4UL, 0x3b26f703UL, 0x839a9066UL, 0x912f3f88UL, 0x299358edUL,
|
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0xb4446054UL, 0x0cf80731UL, 0x1e4da8dfUL, 0xa6f1cfbaUL, 0xfe92dfecUL,
|
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0x462eb889UL, 0x549b1767UL, 0xec277002UL, 0x71f048bbUL, 0xc94c2fdeUL,
|
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0xdbf98030UL, 0x6345e755UL, 0x6b3fa09cUL, 0xd383c7f9UL, 0xc1366817UL,
|
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0x798a0f72UL, 0xe45d37cbUL, 0x5ce150aeUL, 0x4e54ff40UL, 0xf6e89825UL,
|
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0xae8b8873UL, 0x1637ef16UL, 0x048240f8UL, 0xbc3e279dUL, 0x21e91f24UL,
|
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0x99557841UL, 0x8be0d7afUL, 0x335cb0caUL, 0xed59b63bUL, 0x55e5d15eUL,
|
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0x47507eb0UL, 0xffec19d5UL, 0x623b216cUL, 0xda874609UL, 0xc832e9e7UL,
|
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0x708e8e82UL, 0x28ed9ed4UL, 0x9051f9b1UL, 0x82e4565fUL, 0x3a58313aUL,
|
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0xa78f0983UL, 0x1f336ee6UL, 0x0d86c108UL, 0xb53aa66dUL, 0xbd40e1a4UL,
|
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0x05fc86c1UL, 0x1749292fUL, 0xaff54e4aUL, 0x322276f3UL, 0x8a9e1196UL,
|
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0x982bbe78UL, 0x2097d91dUL, 0x78f4c94bUL, 0xc048ae2eUL, 0xd2fd01c0UL,
|
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0x6a4166a5UL, 0xf7965e1cUL, 0x4f2a3979UL, 0x5d9f9697UL, 0xe523f1f2UL,
|
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0x4d6b1905UL, 0xf5d77e60UL, 0xe762d18eUL, 0x5fdeb6ebUL, 0xc2098e52UL,
|
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0x7ab5e937UL, 0x680046d9UL, 0xd0bc21bcUL, 0x88df31eaUL, 0x3063568fUL,
|
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0x22d6f961UL, 0x9a6a9e04UL, 0x07bda6bdUL, 0xbf01c1d8UL, 0xadb46e36UL,
|
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0x15080953UL, 0x1d724e9aUL, 0xa5ce29ffUL, 0xb77b8611UL, 0x0fc7e174UL,
|
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0x9210d9cdUL, 0x2aacbea8UL, 0x38191146UL, 0x80a57623UL, 0xd8c66675UL,
|
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0x607a0110UL, 0x72cfaefeUL, 0xca73c99bUL, 0x57a4f122UL, 0xef189647UL,
|
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0xfdad39a9UL, 0x45115eccUL, 0x764dee06UL, 0xcef18963UL, 0xdc44268dUL,
|
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0x64f841e8UL, 0xf92f7951UL, 0x41931e34UL, 0x5326b1daUL, 0xeb9ad6bfUL,
|
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0xb3f9c6e9UL, 0x0b45a18cUL, 0x19f00e62UL, 0xa14c6907UL, 0x3c9b51beUL,
|
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0x842736dbUL, 0x96929935UL, 0x2e2efe50UL, 0x2654b999UL, 0x9ee8defcUL,
|
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0x8c5d7112UL, 0x34e11677UL, 0xa9362eceUL, 0x118a49abUL, 0x033fe645UL,
|
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0xbb838120UL, 0xe3e09176UL, 0x5b5cf613UL, 0x49e959fdUL, 0xf1553e98UL,
|
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0x6c820621UL, 0xd43e6144UL, 0xc68bceaaUL, 0x7e37a9cfUL, 0xd67f4138UL,
|
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0x6ec3265dUL, 0x7c7689b3UL, 0xc4caeed6UL, 0x591dd66fUL, 0xe1a1b10aUL,
|
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0xf3141ee4UL, 0x4ba87981UL, 0x13cb69d7UL, 0xab770eb2UL, 0xb9c2a15cUL,
|
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0x017ec639UL, 0x9ca9fe80UL, 0x241599e5UL, 0x36a0360bUL, 0x8e1c516eUL,
|
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0x866616a7UL, 0x3eda71c2UL, 0x2c6fde2cUL, 0x94d3b949UL, 0x090481f0UL,
|
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0xb1b8e695UL, 0xa30d497bUL, 0x1bb12e1eUL, 0x43d23e48UL, 0xfb6e592dUL,
|
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0xe9dbf6c3UL, 0x516791a6UL, 0xccb0a91fUL, 0x740cce7aUL, 0x66b96194UL,
|
||||
0xde0506f1UL
|
||||
},
|
||||
{
|
||||
0x00000000UL, 0x96300777UL, 0x2c610eeeUL, 0xba510999UL, 0x19c46d07UL,
|
||||
0x8ff46a70UL, 0x35a563e9UL, 0xa395649eUL, 0x3288db0eUL, 0xa4b8dc79UL,
|
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0x1ee9d5e0UL, 0x88d9d297UL, 0x2b4cb609UL, 0xbd7cb17eUL, 0x072db8e7UL,
|
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0x911dbf90UL, 0x6410b71dUL, 0xf220b06aUL, 0x4871b9f3UL, 0xde41be84UL,
|
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0x7dd4da1aUL, 0xebe4dd6dUL, 0x51b5d4f4UL, 0xc785d383UL, 0x56986c13UL,
|
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0xc0a86b64UL, 0x7af962fdUL, 0xecc9658aUL, 0x4f5c0114UL, 0xd96c0663UL,
|
||||
0x633d0ffaUL, 0xf50d088dUL, 0xc8206e3bUL, 0x5e10694cUL, 0xe44160d5UL,
|
||||
0x727167a2UL, 0xd1e4033cUL, 0x47d4044bUL, 0xfd850dd2UL, 0x6bb50aa5UL,
|
||||
0xfaa8b535UL, 0x6c98b242UL, 0xd6c9bbdbUL, 0x40f9bcacUL, 0xe36cd832UL,
|
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0x755cdf45UL, 0xcf0dd6dcUL, 0x593dd1abUL, 0xac30d926UL, 0x3a00de51UL,
|
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0x8051d7c8UL, 0x1661d0bfUL, 0xb5f4b421UL, 0x23c4b356UL, 0x9995bacfUL,
|
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0x0fa5bdb8UL, 0x9eb80228UL, 0x0888055fUL, 0xb2d90cc6UL, 0x24e90bb1UL,
|
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0x877c6f2fUL, 0x114c6858UL, 0xab1d61c1UL, 0x3d2d66b6UL, 0x9041dc76UL,
|
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0x0671db01UL, 0xbc20d298UL, 0x2a10d5efUL, 0x8985b171UL, 0x1fb5b606UL,
|
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0xa5e4bf9fUL, 0x33d4b8e8UL, 0xa2c90778UL, 0x34f9000fUL, 0x8ea80996UL,
|
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0x18980ee1UL, 0xbb0d6a7fUL, 0x2d3d6d08UL, 0x976c6491UL, 0x015c63e6UL,
|
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0xf4516b6bUL, 0x62616c1cUL, 0xd8306585UL, 0x4e0062f2UL, 0xed95066cUL,
|
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0x7ba5011bUL, 0xc1f40882UL, 0x57c40ff5UL, 0xc6d9b065UL, 0x50e9b712UL,
|
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0xeab8be8bUL, 0x7c88b9fcUL, 0xdf1ddd62UL, 0x492dda15UL, 0xf37cd38cUL,
|
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0x654cd4fbUL, 0x5861b24dUL, 0xce51b53aUL, 0x7400bca3UL, 0xe230bbd4UL,
|
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0x41a5df4aUL, 0xd795d83dUL, 0x6dc4d1a4UL, 0xfbf4d6d3UL, 0x6ae96943UL,
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0xfcd96e34UL, 0x468867adUL, 0xd0b860daUL, 0x732d0444UL, 0xe51d0333UL,
|
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0x5f4c0aaaUL, 0xc97c0dddUL, 0x3c710550UL, 0xaa410227UL, 0x10100bbeUL,
|
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0x86200cc9UL, 0x25b56857UL, 0xb3856f20UL, 0x09d466b9UL, 0x9fe461ceUL,
|
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0x0ef9de5eUL, 0x98c9d929UL, 0x2298d0b0UL, 0xb4a8d7c7UL, 0x173db359UL,
|
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0x810db42eUL, 0x3b5cbdb7UL, 0xad6cbac0UL, 0x2083b8edUL, 0xb6b3bf9aUL,
|
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0x0ce2b603UL, 0x9ad2b174UL, 0x3947d5eaUL, 0xaf77d29dUL, 0x1526db04UL,
|
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0x8316dc73UL, 0x120b63e3UL, 0x843b6494UL, 0x3e6a6d0dUL, 0xa85a6a7aUL,
|
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0x0bcf0ee4UL, 0x9dff0993UL, 0x27ae000aUL, 0xb19e077dUL, 0x44930ff0UL,
|
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0xd2a30887UL, 0x68f2011eUL, 0xfec20669UL, 0x5d5762f7UL, 0xcb676580UL,
|
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0x71366c19UL, 0xe7066b6eUL, 0x761bd4feUL, 0xe02bd389UL, 0x5a7ada10UL,
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0xcc4add67UL, 0x6fdfb9f9UL, 0xf9efbe8eUL, 0x43beb717UL, 0xd58eb060UL,
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0xe8a3d6d6UL, 0x7e93d1a1UL, 0xc4c2d838UL, 0x52f2df4fUL, 0xf167bbd1UL,
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0x6757bca6UL, 0xdd06b53fUL, 0x4b36b248UL, 0xda2b0dd8UL, 0x4c1b0aafUL,
|
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0xf64a0336UL, 0x607a0441UL, 0xc3ef60dfUL, 0x55df67a8UL, 0xef8e6e31UL,
|
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0x79be6946UL, 0x8cb361cbUL, 0x1a8366bcUL, 0xa0d26f25UL, 0x36e26852UL,
|
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0x95770cccUL, 0x03470bbbUL, 0xb9160222UL, 0x2f260555UL, 0xbe3bbac5UL,
|
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0x280bbdb2UL, 0x925ab42bUL, 0x046ab35cUL, 0xa7ffd7c2UL, 0x31cfd0b5UL,
|
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0x8b9ed92cUL, 0x1daede5bUL, 0xb0c2649bUL, 0x26f263ecUL, 0x9ca36a75UL,
|
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0x0a936d02UL, 0xa906099cUL, 0x3f360eebUL, 0x85670772UL, 0x13570005UL,
|
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0x824abf95UL, 0x147ab8e2UL, 0xae2bb17bUL, 0x381bb60cUL, 0x9b8ed292UL,
|
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0x0dbed5e5UL, 0xb7efdc7cUL, 0x21dfdb0bUL, 0xd4d2d386UL, 0x42e2d4f1UL,
|
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0xf8b3dd68UL, 0x6e83da1fUL, 0xcd16be81UL, 0x5b26b9f6UL, 0xe177b06fUL,
|
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0x7747b718UL, 0xe65a0888UL, 0x706a0fffUL, 0xca3b0666UL, 0x5c0b0111UL,
|
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0xff9e658fUL, 0x69ae62f8UL, 0xd3ff6b61UL, 0x45cf6c16UL, 0x78e20aa0UL,
|
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0xeed20dd7UL, 0x5483044eUL, 0xc2b30339UL, 0x612667a7UL, 0xf71660d0UL,
|
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0x4d476949UL, 0xdb776e3eUL, 0x4a6ad1aeUL, 0xdc5ad6d9UL, 0x660bdf40UL,
|
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0xf03bd837UL, 0x53aebca9UL, 0xc59ebbdeUL, 0x7fcfb247UL, 0xe9ffb530UL,
|
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0x1cf2bdbdUL, 0x8ac2bacaUL, 0x3093b353UL, 0xa6a3b424UL, 0x0536d0baUL,
|
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0x9306d7cdUL, 0x2957de54UL, 0xbf67d923UL, 0x2e7a66b3UL, 0xb84a61c4UL,
|
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0x021b685dUL, 0x942b6f2aUL, 0x37be0bb4UL, 0xa18e0cc3UL, 0x1bdf055aUL,
|
||||
0x8def022dUL
|
||||
},
|
||||
{
|
||||
0x00000000UL, 0x41311b19UL, 0x82623632UL, 0xc3532d2bUL, 0x04c56c64UL,
|
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0x45f4777dUL, 0x86a75a56UL, 0xc796414fUL, 0x088ad9c8UL, 0x49bbc2d1UL,
|
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0x8ae8effaUL, 0xcbd9f4e3UL, 0x0c4fb5acUL, 0x4d7eaeb5UL, 0x8e2d839eUL,
|
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0xcf1c9887UL, 0x5112c24aUL, 0x1023d953UL, 0xd370f478UL, 0x9241ef61UL,
|
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0x55d7ae2eUL, 0x14e6b537UL, 0xd7b5981cUL, 0x96848305UL, 0x59981b82UL,
|
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0x18a9009bUL, 0xdbfa2db0UL, 0x9acb36a9UL, 0x5d5d77e6UL, 0x1c6c6cffUL,
|
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0xdf3f41d4UL, 0x9e0e5acdUL, 0xa2248495UL, 0xe3159f8cUL, 0x2046b2a7UL,
|
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0x6177a9beUL, 0xa6e1e8f1UL, 0xe7d0f3e8UL, 0x2483dec3UL, 0x65b2c5daUL,
|
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0xaaae5d5dUL, 0xeb9f4644UL, 0x28cc6b6fUL, 0x69fd7076UL, 0xae6b3139UL,
|
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0xef5a2a20UL, 0x2c09070bUL, 0x6d381c12UL, 0xf33646dfUL, 0xb2075dc6UL,
|
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0x715470edUL, 0x30656bf4UL, 0xf7f32abbUL, 0xb6c231a2UL, 0x75911c89UL,
|
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0x34a00790UL, 0xfbbc9f17UL, 0xba8d840eUL, 0x79dea925UL, 0x38efb23cUL,
|
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0xff79f373UL, 0xbe48e86aUL, 0x7d1bc541UL, 0x3c2ade58UL, 0x054f79f0UL,
|
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0x447e62e9UL, 0x872d4fc2UL, 0xc61c54dbUL, 0x018a1594UL, 0x40bb0e8dUL,
|
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0x83e823a6UL, 0xc2d938bfUL, 0x0dc5a038UL, 0x4cf4bb21UL, 0x8fa7960aUL,
|
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0xce968d13UL, 0x0900cc5cUL, 0x4831d745UL, 0x8b62fa6eUL, 0xca53e177UL,
|
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0x545dbbbaUL, 0x156ca0a3UL, 0xd63f8d88UL, 0x970e9691UL, 0x5098d7deUL,
|
||||
0x11a9ccc7UL, 0xd2fae1ecUL, 0x93cbfaf5UL, 0x5cd76272UL, 0x1de6796bUL,
|
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0xdeb55440UL, 0x9f844f59UL, 0x58120e16UL, 0x1923150fUL, 0xda703824UL,
|
||||
0x9b41233dUL, 0xa76bfd65UL, 0xe65ae67cUL, 0x2509cb57UL, 0x6438d04eUL,
|
||||
0xa3ae9101UL, 0xe29f8a18UL, 0x21cca733UL, 0x60fdbc2aUL, 0xafe124adUL,
|
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0xeed03fb4UL, 0x2d83129fUL, 0x6cb20986UL, 0xab2448c9UL, 0xea1553d0UL,
|
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0x29467efbUL, 0x687765e2UL, 0xf6793f2fUL, 0xb7482436UL, 0x741b091dUL,
|
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0x352a1204UL, 0xf2bc534bUL, 0xb38d4852UL, 0x70de6579UL, 0x31ef7e60UL,
|
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0xfef3e6e7UL, 0xbfc2fdfeUL, 0x7c91d0d5UL, 0x3da0cbccUL, 0xfa368a83UL,
|
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0xbb07919aUL, 0x7854bcb1UL, 0x3965a7a8UL, 0x4b98833bUL, 0x0aa99822UL,
|
||||
0xc9fab509UL, 0x88cbae10UL, 0x4f5def5fUL, 0x0e6cf446UL, 0xcd3fd96dUL,
|
||||
0x8c0ec274UL, 0x43125af3UL, 0x022341eaUL, 0xc1706cc1UL, 0x804177d8UL,
|
||||
0x47d73697UL, 0x06e62d8eUL, 0xc5b500a5UL, 0x84841bbcUL, 0x1a8a4171UL,
|
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0x5bbb5a68UL, 0x98e87743UL, 0xd9d96c5aUL, 0x1e4f2d15UL, 0x5f7e360cUL,
|
||||
0x9c2d1b27UL, 0xdd1c003eUL, 0x120098b9UL, 0x533183a0UL, 0x9062ae8bUL,
|
||||
0xd153b592UL, 0x16c5f4ddUL, 0x57f4efc4UL, 0x94a7c2efUL, 0xd596d9f6UL,
|
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0xe9bc07aeUL, 0xa88d1cb7UL, 0x6bde319cUL, 0x2aef2a85UL, 0xed796bcaUL,
|
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0xac4870d3UL, 0x6f1b5df8UL, 0x2e2a46e1UL, 0xe136de66UL, 0xa007c57fUL,
|
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0x6354e854UL, 0x2265f34dUL, 0xe5f3b202UL, 0xa4c2a91bUL, 0x67918430UL,
|
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0x26a09f29UL, 0xb8aec5e4UL, 0xf99fdefdUL, 0x3accf3d6UL, 0x7bfde8cfUL,
|
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0xbc6ba980UL, 0xfd5ab299UL, 0x3e099fb2UL, 0x7f3884abUL, 0xb0241c2cUL,
|
||||
0xf1150735UL, 0x32462a1eUL, 0x73773107UL, 0xb4e17048UL, 0xf5d06b51UL,
|
||||
0x3683467aUL, 0x77b25d63UL, 0x4ed7facbUL, 0x0fe6e1d2UL, 0xccb5ccf9UL,
|
||||
0x8d84d7e0UL, 0x4a1296afUL, 0x0b238db6UL, 0xc870a09dUL, 0x8941bb84UL,
|
||||
0x465d2303UL, 0x076c381aUL, 0xc43f1531UL, 0x850e0e28UL, 0x42984f67UL,
|
||||
0x03a9547eUL, 0xc0fa7955UL, 0x81cb624cUL, 0x1fc53881UL, 0x5ef42398UL,
|
||||
0x9da70eb3UL, 0xdc9615aaUL, 0x1b0054e5UL, 0x5a314ffcUL, 0x996262d7UL,
|
||||
0xd85379ceUL, 0x174fe149UL, 0x567efa50UL, 0x952dd77bUL, 0xd41ccc62UL,
|
||||
0x138a8d2dUL, 0x52bb9634UL, 0x91e8bb1fUL, 0xd0d9a006UL, 0xecf37e5eUL,
|
||||
0xadc26547UL, 0x6e91486cUL, 0x2fa05375UL, 0xe836123aUL, 0xa9070923UL,
|
||||
0x6a542408UL, 0x2b653f11UL, 0xe479a796UL, 0xa548bc8fUL, 0x661b91a4UL,
|
||||
0x272a8abdUL, 0xe0bccbf2UL, 0xa18dd0ebUL, 0x62defdc0UL, 0x23efe6d9UL,
|
||||
0xbde1bc14UL, 0xfcd0a70dUL, 0x3f838a26UL, 0x7eb2913fUL, 0xb924d070UL,
|
||||
0xf815cb69UL, 0x3b46e642UL, 0x7a77fd5bUL, 0xb56b65dcUL, 0xf45a7ec5UL,
|
||||
0x370953eeUL, 0x763848f7UL, 0xb1ae09b8UL, 0xf09f12a1UL, 0x33cc3f8aUL,
|
||||
0x72fd2493UL
|
||||
},
|
||||
{
|
||||
0x00000000UL, 0x376ac201UL, 0x6ed48403UL, 0x59be4602UL, 0xdca80907UL,
|
||||
0xebc2cb06UL, 0xb27c8d04UL, 0x85164f05UL, 0xb851130eUL, 0x8f3bd10fUL,
|
||||
0xd685970dUL, 0xe1ef550cUL, 0x64f91a09UL, 0x5393d808UL, 0x0a2d9e0aUL,
|
||||
0x3d475c0bUL, 0x70a3261cUL, 0x47c9e41dUL, 0x1e77a21fUL, 0x291d601eUL,
|
||||
0xac0b2f1bUL, 0x9b61ed1aUL, 0xc2dfab18UL, 0xf5b56919UL, 0xc8f23512UL,
|
||||
0xff98f713UL, 0xa626b111UL, 0x914c7310UL, 0x145a3c15UL, 0x2330fe14UL,
|
||||
0x7a8eb816UL, 0x4de47a17UL, 0xe0464d38UL, 0xd72c8f39UL, 0x8e92c93bUL,
|
||||
0xb9f80b3aUL, 0x3cee443fUL, 0x0b84863eUL, 0x523ac03cUL, 0x6550023dUL,
|
||||
0x58175e36UL, 0x6f7d9c37UL, 0x36c3da35UL, 0x01a91834UL, 0x84bf5731UL,
|
||||
0xb3d59530UL, 0xea6bd332UL, 0xdd011133UL, 0x90e56b24UL, 0xa78fa925UL,
|
||||
0xfe31ef27UL, 0xc95b2d26UL, 0x4c4d6223UL, 0x7b27a022UL, 0x2299e620UL,
|
||||
0x15f32421UL, 0x28b4782aUL, 0x1fdeba2bUL, 0x4660fc29UL, 0x710a3e28UL,
|
||||
0xf41c712dUL, 0xc376b32cUL, 0x9ac8f52eUL, 0xada2372fUL, 0xc08d9a70UL,
|
||||
0xf7e75871UL, 0xae591e73UL, 0x9933dc72UL, 0x1c259377UL, 0x2b4f5176UL,
|
||||
0x72f11774UL, 0x459bd575UL, 0x78dc897eUL, 0x4fb64b7fUL, 0x16080d7dUL,
|
||||
0x2162cf7cUL, 0xa4748079UL, 0x931e4278UL, 0xcaa0047aUL, 0xfdcac67bUL,
|
||||
0xb02ebc6cUL, 0x87447e6dUL, 0xdefa386fUL, 0xe990fa6eUL, 0x6c86b56bUL,
|
||||
0x5bec776aUL, 0x02523168UL, 0x3538f369UL, 0x087faf62UL, 0x3f156d63UL,
|
||||
0x66ab2b61UL, 0x51c1e960UL, 0xd4d7a665UL, 0xe3bd6464UL, 0xba032266UL,
|
||||
0x8d69e067UL, 0x20cbd748UL, 0x17a11549UL, 0x4e1f534bUL, 0x7975914aUL,
|
||||
0xfc63de4fUL, 0xcb091c4eUL, 0x92b75a4cUL, 0xa5dd984dUL, 0x989ac446UL,
|
||||
0xaff00647UL, 0xf64e4045UL, 0xc1248244UL, 0x4432cd41UL, 0x73580f40UL,
|
||||
0x2ae64942UL, 0x1d8c8b43UL, 0x5068f154UL, 0x67023355UL, 0x3ebc7557UL,
|
||||
0x09d6b756UL, 0x8cc0f853UL, 0xbbaa3a52UL, 0xe2147c50UL, 0xd57ebe51UL,
|
||||
0xe839e25aUL, 0xdf53205bUL, 0x86ed6659UL, 0xb187a458UL, 0x3491eb5dUL,
|
||||
0x03fb295cUL, 0x5a456f5eUL, 0x6d2fad5fUL, 0x801b35e1UL, 0xb771f7e0UL,
|
||||
0xeecfb1e2UL, 0xd9a573e3UL, 0x5cb33ce6UL, 0x6bd9fee7UL, 0x3267b8e5UL,
|
||||
0x050d7ae4UL, 0x384a26efUL, 0x0f20e4eeUL, 0x569ea2ecUL, 0x61f460edUL,
|
||||
0xe4e22fe8UL, 0xd388ede9UL, 0x8a36abebUL, 0xbd5c69eaUL, 0xf0b813fdUL,
|
||||
0xc7d2d1fcUL, 0x9e6c97feUL, 0xa90655ffUL, 0x2c101afaUL, 0x1b7ad8fbUL,
|
||||
0x42c49ef9UL, 0x75ae5cf8UL, 0x48e900f3UL, 0x7f83c2f2UL, 0x263d84f0UL,
|
||||
0x115746f1UL, 0x944109f4UL, 0xa32bcbf5UL, 0xfa958df7UL, 0xcdff4ff6UL,
|
||||
0x605d78d9UL, 0x5737bad8UL, 0x0e89fcdaUL, 0x39e33edbUL, 0xbcf571deUL,
|
||||
0x8b9fb3dfUL, 0xd221f5ddUL, 0xe54b37dcUL, 0xd80c6bd7UL, 0xef66a9d6UL,
|
||||
0xb6d8efd4UL, 0x81b22dd5UL, 0x04a462d0UL, 0x33cea0d1UL, 0x6a70e6d3UL,
|
||||
0x5d1a24d2UL, 0x10fe5ec5UL, 0x27949cc4UL, 0x7e2adac6UL, 0x494018c7UL,
|
||||
0xcc5657c2UL, 0xfb3c95c3UL, 0xa282d3c1UL, 0x95e811c0UL, 0xa8af4dcbUL,
|
||||
0x9fc58fcaUL, 0xc67bc9c8UL, 0xf1110bc9UL, 0x740744ccUL, 0x436d86cdUL,
|
||||
0x1ad3c0cfUL, 0x2db902ceUL, 0x4096af91UL, 0x77fc6d90UL, 0x2e422b92UL,
|
||||
0x1928e993UL, 0x9c3ea696UL, 0xab546497UL, 0xf2ea2295UL, 0xc580e094UL,
|
||||
0xf8c7bc9fUL, 0xcfad7e9eUL, 0x9613389cUL, 0xa179fa9dUL, 0x246fb598UL,
|
||||
0x13057799UL, 0x4abb319bUL, 0x7dd1f39aUL, 0x3035898dUL, 0x075f4b8cUL,
|
||||
0x5ee10d8eUL, 0x698bcf8fUL, 0xec9d808aUL, 0xdbf7428bUL, 0x82490489UL,
|
||||
0xb523c688UL, 0x88649a83UL, 0xbf0e5882UL, 0xe6b01e80UL, 0xd1dadc81UL,
|
||||
0x54cc9384UL, 0x63a65185UL, 0x3a181787UL, 0x0d72d586UL, 0xa0d0e2a9UL,
|
||||
0x97ba20a8UL, 0xce0466aaUL, 0xf96ea4abUL, 0x7c78ebaeUL, 0x4b1229afUL,
|
||||
0x12ac6fadUL, 0x25c6adacUL, 0x1881f1a7UL, 0x2feb33a6UL, 0x765575a4UL,
|
||||
0x413fb7a5UL, 0xc429f8a0UL, 0xf3433aa1UL, 0xaafd7ca3UL, 0x9d97bea2UL,
|
||||
0xd073c4b5UL, 0xe71906b4UL, 0xbea740b6UL, 0x89cd82b7UL, 0x0cdbcdb2UL,
|
||||
0x3bb10fb3UL, 0x620f49b1UL, 0x55658bb0UL, 0x6822d7bbUL, 0x5f4815baUL,
|
||||
0x06f653b8UL, 0x319c91b9UL, 0xb48adebcUL, 0x83e01cbdUL, 0xda5e5abfUL,
|
||||
0xed3498beUL
|
||||
},
|
||||
{
|
||||
0x00000000UL, 0x6567bcb8UL, 0x8bc809aaUL, 0xeeafb512UL, 0x5797628fUL,
|
||||
0x32f0de37UL, 0xdc5f6b25UL, 0xb938d79dUL, 0xef28b4c5UL, 0x8a4f087dUL,
|
||||
0x64e0bd6fUL, 0x018701d7UL, 0xb8bfd64aUL, 0xddd86af2UL, 0x3377dfe0UL,
|
||||
0x56106358UL, 0x9f571950UL, 0xfa30a5e8UL, 0x149f10faUL, 0x71f8ac42UL,
|
||||
0xc8c07bdfUL, 0xada7c767UL, 0x43087275UL, 0x266fcecdUL, 0x707fad95UL,
|
||||
0x1518112dUL, 0xfbb7a43fUL, 0x9ed01887UL, 0x27e8cf1aUL, 0x428f73a2UL,
|
||||
0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL,
|
||||
0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL,
|
||||
0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL,
|
||||
0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL,
|
||||
0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL,
|
||||
0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL,
|
||||
0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL,
|
||||
0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL,
|
||||
0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL,
|
||||
0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL,
|
||||
0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL,
|
||||
0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL,
|
||||
0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL,
|
||||
0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL,
|
||||
0x546044b4UL, 0x3107f80cUL, 0xdfa84d1eUL, 0xbacff1a6UL, 0xecdf92feUL,
|
||||
0x89b82e46UL, 0x67179b54UL, 0x027027ecUL, 0xbb48f071UL, 0xde2f4cc9UL,
|
||||
0x3080f9dbUL, 0x55e74563UL, 0x9ca03f6bUL, 0xf9c783d3UL, 0x176836c1UL,
|
||||
0x720f8a79UL, 0xcb375de4UL, 0xae50e15cUL, 0x40ff544eUL, 0x2598e8f6UL,
|
||||
0x73888baeUL, 0x16ef3716UL, 0xf8408204UL, 0x9d273ebcUL, 0x241fe921UL,
|
||||
0x41785599UL, 0xafd7e08bUL, 0xcab05c33UL, 0x3bb659edUL, 0x5ed1e555UL,
|
||||
0xb07e5047UL, 0xd519ecffUL, 0x6c213b62UL, 0x094687daUL, 0xe7e932c8UL,
|
||||
0x828e8e70UL, 0xd49eed28UL, 0xb1f95190UL, 0x5f56e482UL, 0x3a31583aUL,
|
||||
0x83098fa7UL, 0xe66e331fUL, 0x08c1860dUL, 0x6da63ab5UL, 0xa4e140bdUL,
|
||||
0xc186fc05UL, 0x2f294917UL, 0x4a4ef5afUL, 0xf3762232UL, 0x96119e8aUL,
|
||||
0x78be2b98UL, 0x1dd99720UL, 0x4bc9f478UL, 0x2eae48c0UL, 0xc001fdd2UL,
|
||||
0xa566416aUL, 0x1c5e96f7UL, 0x79392a4fUL, 0x97969f5dUL, 0xf2f123e5UL,
|
||||
0x05196b4dUL, 0x607ed7f5UL, 0x8ed162e7UL, 0xebb6de5fUL, 0x528e09c2UL,
|
||||
0x37e9b57aUL, 0xd9460068UL, 0xbc21bcd0UL, 0xea31df88UL, 0x8f566330UL,
|
||||
0x61f9d622UL, 0x049e6a9aUL, 0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL,
|
||||
0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL,
|
||||
0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL,
|
||||
0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL,
|
||||
0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL,
|
||||
0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL,
|
||||
0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL,
|
||||
0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL,
|
||||
0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL,
|
||||
0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL,
|
||||
0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL,
|
||||
0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL,
|
||||
0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL,
|
||||
0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL,
|
||||
0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL,
|
||||
0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL,
|
||||
0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL,
|
||||
0xf10605deUL
|
||||
#endif
|
||||
}
|
||||
};
|
||||
#endif
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,349 @@
|
|||
/* deflate.h -- internal compression state
|
||||
* Copyright (C) 1995-2016 Jean-loup Gailly
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
/* @(#) $Id$ */
|
||||
|
||||
#ifndef DEFLATE_H
|
||||
#define DEFLATE_H
|
||||
|
||||
#include "zutil.h"
|
||||
|
||||
/* define NO_GZIP when compiling if you want to disable gzip header and
|
||||
trailer creation by deflate(). NO_GZIP would be used to avoid linking in
|
||||
the crc code when it is not needed. For shared libraries, gzip encoding
|
||||
should be left enabled. */
|
||||
#ifndef NO_GZIP
|
||||
# define GZIP
|
||||
#endif
|
||||
|
||||
/* ===========================================================================
|
||||
* Internal compression state.
|
||||
*/
|
||||
|
||||
#define LENGTH_CODES 29
|
||||
/* number of length codes, not counting the special END_BLOCK code */
|
||||
|
||||
#define LITERALS 256
|
||||
/* number of literal bytes 0..255 */
|
||||
|
||||
#define L_CODES (LITERALS+1+LENGTH_CODES)
|
||||
/* number of Literal or Length codes, including the END_BLOCK code */
|
||||
|
||||
#define D_CODES 30
|
||||
/* number of distance codes */
|
||||
|
||||
#define BL_CODES 19
|
||||
/* number of codes used to transfer the bit lengths */
|
||||
|
||||
#define HEAP_SIZE (2*L_CODES+1)
|
||||
/* maximum heap size */
|
||||
|
||||
#define MAX_BITS 15
|
||||
/* All codes must not exceed MAX_BITS bits */
|
||||
|
||||
#define Buf_size 16
|
||||
/* size of bit buffer in bi_buf */
|
||||
|
||||
#define INIT_STATE 42 /* zlib header -> BUSY_STATE */
|
||||
#ifdef GZIP
|
||||
# define GZIP_STATE 57 /* gzip header -> BUSY_STATE | EXTRA_STATE */
|
||||
#endif
|
||||
#define EXTRA_STATE 69 /* gzip extra block -> NAME_STATE */
|
||||
#define NAME_STATE 73 /* gzip file name -> COMMENT_STATE */
|
||||
#define COMMENT_STATE 91 /* gzip comment -> HCRC_STATE */
|
||||
#define HCRC_STATE 103 /* gzip header CRC -> BUSY_STATE */
|
||||
#define BUSY_STATE 113 /* deflate -> FINISH_STATE */
|
||||
#define FINISH_STATE 666 /* stream complete */
|
||||
/* Stream status */
|
||||
|
||||
|
||||
/* Data structure describing a single value and its code string. */
|
||||
typedef struct ct_data_s {
|
||||
union {
|
||||
ush freq; /* frequency count */
|
||||
ush code; /* bit string */
|
||||
} fc;
|
||||
union {
|
||||
ush dad; /* father node in Huffman tree */
|
||||
ush len; /* length of bit string */
|
||||
} dl;
|
||||
} FAR ct_data;
|
||||
|
||||
#define Freq fc.freq
|
||||
#define Code fc.code
|
||||
#define Dad dl.dad
|
||||
#define Len dl.len
|
||||
|
||||
typedef struct static_tree_desc_s static_tree_desc;
|
||||
|
||||
typedef struct tree_desc_s {
|
||||
ct_data *dyn_tree; /* the dynamic tree */
|
||||
int max_code; /* largest code with non zero frequency */
|
||||
const static_tree_desc *stat_desc; /* the corresponding static tree */
|
||||
} FAR tree_desc;
|
||||
|
||||
typedef ush Pos;
|
||||
typedef Pos FAR Posf;
|
||||
typedef unsigned IPos;
|
||||
|
||||
/* A Pos is an index in the character window. We use short instead of int to
|
||||
* save space in the various tables. IPos is used only for parameter passing.
|
||||
*/
|
||||
|
||||
typedef struct internal_state {
|
||||
z_streamp strm; /* pointer back to this zlib stream */
|
||||
int status; /* as the name implies */
|
||||
Bytef *pending_buf; /* output still pending */
|
||||
ulg pending_buf_size; /* size of pending_buf */
|
||||
Bytef *pending_out; /* next pending byte to output to the stream */
|
||||
ulg pending; /* nb of bytes in the pending buffer */
|
||||
int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
|
||||
gz_headerp gzhead; /* gzip header information to write */
|
||||
ulg gzindex; /* where in extra, name, or comment */
|
||||
Byte method; /* can only be DEFLATED */
|
||||
int last_flush; /* value of flush param for previous deflate call */
|
||||
|
||||
/* used by deflate.c: */
|
||||
|
||||
uInt w_size; /* LZ77 window size (32K by default) */
|
||||
uInt w_bits; /* log2(w_size) (8..16) */
|
||||
uInt w_mask; /* w_size - 1 */
|
||||
|
||||
Bytef *window;
|
||||
/* Sliding window. Input bytes are read into the second half of the window,
|
||||
* and move to the first half later to keep a dictionary of at least wSize
|
||||
* bytes. With this organization, matches are limited to a distance of
|
||||
* wSize-MAX_MATCH bytes, but this ensures that IO is always
|
||||
* performed with a length multiple of the block size. Also, it limits
|
||||
* the window size to 64K, which is quite useful on MSDOS.
|
||||
* To do: use the user input buffer as sliding window.
|
||||
*/
|
||||
|
||||
ulg window_size;
|
||||
/* Actual size of window: 2*wSize, except when the user input buffer
|
||||
* is directly used as sliding window.
|
||||
*/
|
||||
|
||||
Posf *prev;
|
||||
/* Link to older string with same hash index. To limit the size of this
|
||||
* array to 64K, this link is maintained only for the last 32K strings.
|
||||
* An index in this array is thus a window index modulo 32K.
|
||||
*/
|
||||
|
||||
Posf *head; /* Heads of the hash chains or NIL. */
|
||||
|
||||
uInt ins_h; /* hash index of string to be inserted */
|
||||
uInt hash_size; /* number of elements in hash table */
|
||||
uInt hash_bits; /* log2(hash_size) */
|
||||
uInt hash_mask; /* hash_size-1 */
|
||||
|
||||
uInt hash_shift;
|
||||
/* Number of bits by which ins_h must be shifted at each input
|
||||
* step. It must be such that after MIN_MATCH steps, the oldest
|
||||
* byte no longer takes part in the hash key, that is:
|
||||
* hash_shift * MIN_MATCH >= hash_bits
|
||||
*/
|
||||
|
||||
long block_start;
|
||||
/* Window position at the beginning of the current output block. Gets
|
||||
* negative when the window is moved backwards.
|
||||
*/
|
||||
|
||||
uInt match_length; /* length of best match */
|
||||
IPos prev_match; /* previous match */
|
||||
int match_available; /* set if previous match exists */
|
||||
uInt strstart; /* start of string to insert */
|
||||
uInt match_start; /* start of matching string */
|
||||
uInt lookahead; /* number of valid bytes ahead in window */
|
||||
|
||||
uInt prev_length;
|
||||
/* Length of the best match at previous step. Matches not greater than this
|
||||
* are discarded. This is used in the lazy match evaluation.
|
||||
*/
|
||||
|
||||
uInt max_chain_length;
|
||||
/* To speed up deflation, hash chains are never searched beyond this
|
||||
* length. A higher limit improves compression ratio but degrades the
|
||||
* speed.
|
||||
*/
|
||||
|
||||
uInt max_lazy_match;
|
||||
/* Attempt to find a better match only when the current match is strictly
|
||||
* smaller than this value. This mechanism is used only for compression
|
||||
* levels >= 4.
|
||||
*/
|
||||
# define max_insert_length max_lazy_match
|
||||
/* Insert new strings in the hash table only if the match length is not
|
||||
* greater than this length. This saves time but degrades compression.
|
||||
* max_insert_length is used only for compression levels <= 3.
|
||||
*/
|
||||
|
||||
int level; /* compression level (1..9) */
|
||||
int strategy; /* favor or force Huffman coding*/
|
||||
|
||||
uInt good_match;
|
||||
/* Use a faster search when the previous match is longer than this */
|
||||
|
||||
int nice_match; /* Stop searching when current match exceeds this */
|
||||
|
||||
/* used by trees.c: */
|
||||
/* Didn't use ct_data typedef below to suppress compiler warning */
|
||||
struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */
|
||||
struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
|
||||
struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */
|
||||
|
||||
struct tree_desc_s l_desc; /* desc. for literal tree */
|
||||
struct tree_desc_s d_desc; /* desc. for distance tree */
|
||||
struct tree_desc_s bl_desc; /* desc. for bit length tree */
|
||||
|
||||
ush bl_count[MAX_BITS+1];
|
||||
/* number of codes at each bit length for an optimal tree */
|
||||
|
||||
int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */
|
||||
int heap_len; /* number of elements in the heap */
|
||||
int heap_max; /* element of largest frequency */
|
||||
/* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
|
||||
* The same heap array is used to build all trees.
|
||||
*/
|
||||
|
||||
uch depth[2*L_CODES+1];
|
||||
/* Depth of each subtree used as tie breaker for trees of equal frequency
|
||||
*/
|
||||
|
||||
uchf *l_buf; /* buffer for literals or lengths */
|
||||
|
||||
uInt lit_bufsize;
|
||||
/* Size of match buffer for literals/lengths. There are 4 reasons for
|
||||
* limiting lit_bufsize to 64K:
|
||||
* - frequencies can be kept in 16 bit counters
|
||||
* - if compression is not successful for the first block, all input
|
||||
* data is still in the window so we can still emit a stored block even
|
||||
* when input comes from standard input. (This can also be done for
|
||||
* all blocks if lit_bufsize is not greater than 32K.)
|
||||
* - if compression is not successful for a file smaller than 64K, we can
|
||||
* even emit a stored file instead of a stored block (saving 5 bytes).
|
||||
* This is applicable only for zip (not gzip or zlib).
|
||||
* - creating new Huffman trees less frequently may not provide fast
|
||||
* adaptation to changes in the input data statistics. (Take for
|
||||
* example a binary file with poorly compressible code followed by
|
||||
* a highly compressible string table.) Smaller buffer sizes give
|
||||
* fast adaptation but have of course the overhead of transmitting
|
||||
* trees more frequently.
|
||||
* - I can't count above 4
|
||||
*/
|
||||
|
||||
uInt last_lit; /* running index in l_buf */
|
||||
|
||||
ushf *d_buf;
|
||||
/* Buffer for distances. To simplify the code, d_buf and l_buf have
|
||||
* the same number of elements. To use different lengths, an extra flag
|
||||
* array would be necessary.
|
||||
*/
|
||||
|
||||
ulg opt_len; /* bit length of current block with optimal trees */
|
||||
ulg static_len; /* bit length of current block with static trees */
|
||||
uInt matches; /* number of string matches in current block */
|
||||
uInt insert; /* bytes at end of window left to insert */
|
||||
|
||||
#ifdef ZLIB_DEBUG
|
||||
ulg compressed_len; /* total bit length of compressed file mod 2^32 */
|
||||
ulg bits_sent; /* bit length of compressed data sent mod 2^32 */
|
||||
#endif
|
||||
|
||||
ush bi_buf;
|
||||
/* Output buffer. bits are inserted starting at the bottom (least
|
||||
* significant bits).
|
||||
*/
|
||||
int bi_valid;
|
||||
/* Number of valid bits in bi_buf. All bits above the last valid bit
|
||||
* are always zero.
|
||||
*/
|
||||
|
||||
ulg high_water;
|
||||
/* High water mark offset in window for initialized bytes -- bytes above
|
||||
* this are set to zero in order to avoid memory check warnings when
|
||||
* longest match routines access bytes past the input. This is then
|
||||
* updated to the new high water mark.
|
||||
*/
|
||||
|
||||
} FAR deflate_state;
|
||||
|
||||
/* Output a byte on the stream.
|
||||
* IN assertion: there is enough room in pending_buf.
|
||||
*/
|
||||
#define put_byte(s, c) {s->pending_buf[s->pending++] = (Bytef)(c);}
|
||||
|
||||
|
||||
#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
|
||||
/* Minimum amount of lookahead, except at the end of the input file.
|
||||
* See deflate.c for comments about the MIN_MATCH+1.
|
||||
*/
|
||||
|
||||
#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)
|
||||
/* In order to simplify the code, particularly on 16 bit machines, match
|
||||
* distances are limited to MAX_DIST instead of WSIZE.
|
||||
*/
|
||||
|
||||
#define WIN_INIT MAX_MATCH
|
||||
/* Number of bytes after end of data in window to initialize in order to avoid
|
||||
memory checker errors from longest match routines */
|
||||
|
||||
/* in trees.c */
|
||||
void ZLIB_INTERNAL _tr_init OF((deflate_state *s));
|
||||
int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
|
||||
void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
|
||||
ulg stored_len, int last));
|
||||
void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s));
|
||||
void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
|
||||
void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
|
||||
ulg stored_len, int last));
|
||||
|
||||
#define d_code(dist) \
|
||||
((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
|
||||
/* Mapping from a distance to a distance code. dist is the distance - 1 and
|
||||
* must not have side effects. _dist_code[256] and _dist_code[257] are never
|
||||
* used.
|
||||
*/
|
||||
|
||||
#ifndef ZLIB_DEBUG
|
||||
/* Inline versions of _tr_tally for speed: */
|
||||
|
||||
#if defined(GEN_TREES_H) || !defined(STDC)
|
||||
extern uch ZLIB_INTERNAL _length_code[];
|
||||
extern uch ZLIB_INTERNAL _dist_code[];
|
||||
#else
|
||||
extern const uch ZLIB_INTERNAL _length_code[];
|
||||
extern const uch ZLIB_INTERNAL _dist_code[];
|
||||
#endif
|
||||
|
||||
# define _tr_tally_lit(s, c, flush) \
|
||||
{ uch cc = (c); \
|
||||
s->d_buf[s->last_lit] = 0; \
|
||||
s->l_buf[s->last_lit++] = cc; \
|
||||
s->dyn_ltree[cc].Freq++; \
|
||||
flush = (s->last_lit == s->lit_bufsize-1); \
|
||||
}
|
||||
# define _tr_tally_dist(s, distance, length, flush) \
|
||||
{ uch len = (uch)(length); \
|
||||
ush dist = (ush)(distance); \
|
||||
s->d_buf[s->last_lit] = dist; \
|
||||
s->l_buf[s->last_lit++] = len; \
|
||||
dist--; \
|
||||
s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
|
||||
s->dyn_dtree[d_code(dist)].Freq++; \
|
||||
flush = (s->last_lit == s->lit_bufsize-1); \
|
||||
}
|
||||
#else
|
||||
# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
|
||||
# define _tr_tally_dist(s, distance, length, flush) \
|
||||
flush = _tr_tally(s, distance, length)
|
||||
#endif
|
||||
|
||||
#endif /* DEFLATE_H */
|
||||
|
|
@ -55,7 +55,7 @@
|
|||
/* original ZLib. */
|
||||
|
||||
#ifndef USE_ZLIB_ZCALLOC
|
||||
#define MY_ZCALLOC /* prevent all zcalloc() & zfree() in zutil.c */
|
||||
#define MY_ZCALLOC /* prevent all zcalloc() & zfree() in zutil.c */
|
||||
#endif
|
||||
|
||||
/* Note that our `zlib.h' includes `ftzconf.h' instead of `zconf.h'; */
|
||||
|
|
@ -86,6 +86,7 @@
|
|||
|
||||
/* Urgh. `inflate_mask' must not be declared twice -- C++ doesn't like
|
||||
this. We temporarily disable it and load all necessary header files. */
|
||||
/*
|
||||
#define NO_INFLATE_MASK
|
||||
#include "zutil.h"
|
||||
#include "inftrees.h"
|
||||
|
|
@ -93,15 +94,33 @@
|
|||
#include "infcodes.h"
|
||||
#include "infutil.h"
|
||||
#undef NO_INFLATE_MASK
|
||||
*/
|
||||
|
||||
#include "deflate.h"
|
||||
#include "inffast.h"
|
||||
#include "inftrees.h"
|
||||
#include "inffixed.h"
|
||||
#include "zconf.h"
|
||||
#include "zutil.h"
|
||||
#include "inflate.h"
|
||||
#include "gzguts.h"
|
||||
/* infutil.c must be included before infcodes.c */
|
||||
#include "zutil.c"
|
||||
#include "inftrees.c"
|
||||
#include "infutil.c"
|
||||
#include "infcodes.c"
|
||||
#include "infblock.c"
|
||||
|
||||
#include "inflate.c"
|
||||
#include "adler32.c"
|
||||
#include "compress.c"
|
||||
#include "crc32.c"
|
||||
#include "deflate.c"
|
||||
#include "gzclose.c"
|
||||
/* #include "infback.c" not needed */
|
||||
#include "inftrees.c"
|
||||
#include "trees.c"
|
||||
#include "uncompr.c"
|
||||
#include "zutil.c"
|
||||
#include "inffast.c"
|
||||
#include "gzlib.c"
|
||||
#include "gzread.c"
|
||||
#include "gzwrite.c"
|
||||
|
||||
#if defined( _MSC_VER )
|
||||
#pragma warning( pop )
|
||||
|
|
|
|||
|
|
@ -1,109 +1,255 @@
|
|||
/* zconf.h -- configuration of the zlib compression library
|
||||
* Copyright (C) 1995-2002 Jean-loup Gailly.
|
||||
* Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* @(#) $Id$ */
|
||||
|
||||
#ifndef _ZCONF_H
|
||||
#define _ZCONF_H
|
||||
#ifndef ZCONF_H
|
||||
#define ZCONF_H
|
||||
|
||||
/*
|
||||
* If you *really* need a unique prefix for all types and library functions,
|
||||
* compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
|
||||
* Even better than compiling with -DZ_PREFIX would be to use configure to set
|
||||
* this permanently in zconf.h using "./configure --zprefix".
|
||||
*/
|
||||
#ifdef Z_PREFIX
|
||||
# define deflateInit_ z_deflateInit_
|
||||
# define deflate z_deflate
|
||||
# define deflateEnd z_deflateEnd
|
||||
# define inflateInit_ z_inflateInit_
|
||||
# define inflate z_inflate
|
||||
# define inflateEnd z_inflateEnd
|
||||
# define deflateInit2_ z_deflateInit2_
|
||||
# define deflateSetDictionary z_deflateSetDictionary
|
||||
# define deflateCopy z_deflateCopy
|
||||
# define deflateReset z_deflateReset
|
||||
# define deflateParams z_deflateParams
|
||||
# define inflateInit2_ z_inflateInit2_
|
||||
# define inflateSetDictionary z_inflateSetDictionary
|
||||
# define inflateSync z_inflateSync
|
||||
# define inflateSyncPoint z_inflateSyncPoint
|
||||
# define inflateReset z_inflateReset
|
||||
# define compress z_compress
|
||||
# define compress2 z_compress2
|
||||
# define uncompress z_uncompress
|
||||
# define adler32 z_adler32
|
||||
# define crc32 z_crc32
|
||||
# define get_crc_table z_get_crc_table
|
||||
#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */
|
||||
# define Z_PREFIX_SET
|
||||
|
||||
# define Byte z_Byte
|
||||
# define uInt z_uInt
|
||||
# define uLong z_uLong
|
||||
# define Bytef z_Bytef
|
||||
# define charf z_charf
|
||||
# define intf z_intf
|
||||
# define uIntf z_uIntf
|
||||
# define uLongf z_uLongf
|
||||
# define voidpf z_voidpf
|
||||
# define voidp z_voidp
|
||||
#endif
|
||||
|
||||
#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
|
||||
# define WIN32
|
||||
#endif
|
||||
#if defined(__GNUC__) || defined(WIN32) || defined(__386__) || defined(i386)
|
||||
# ifndef __32BIT__
|
||||
# define __32BIT__
|
||||
/* all linked symbols and init macros */
|
||||
# define _dist_code z__dist_code
|
||||
# define _length_code z__length_code
|
||||
# define _tr_align z__tr_align
|
||||
# define _tr_flush_bits z__tr_flush_bits
|
||||
# define _tr_flush_block z__tr_flush_block
|
||||
# define _tr_init z__tr_init
|
||||
# define _tr_stored_block z__tr_stored_block
|
||||
# define _tr_tally z__tr_tally
|
||||
# define adler32 z_adler32
|
||||
# define adler32_combine z_adler32_combine
|
||||
# define adler32_combine64 z_adler32_combine64
|
||||
# define adler32_z z_adler32_z
|
||||
# ifndef Z_SOLO
|
||||
# define compress z_compress
|
||||
# define compress2 z_compress2
|
||||
# define compressBound z_compressBound
|
||||
# endif
|
||||
# define crc32 z_crc32
|
||||
# define crc32_combine z_crc32_combine
|
||||
# define crc32_combine64 z_crc32_combine64
|
||||
# define crc32_z z_crc32_z
|
||||
# define deflate z_deflate
|
||||
# define deflateBound z_deflateBound
|
||||
# define deflateCopy z_deflateCopy
|
||||
# define deflateEnd z_deflateEnd
|
||||
# define deflateGetDictionary z_deflateGetDictionary
|
||||
# define deflateInit z_deflateInit
|
||||
# define deflateInit2 z_deflateInit2
|
||||
# define deflateInit2_ z_deflateInit2_
|
||||
# define deflateInit_ z_deflateInit_
|
||||
# define deflateParams z_deflateParams
|
||||
# define deflatePending z_deflatePending
|
||||
# define deflatePrime z_deflatePrime
|
||||
# define deflateReset z_deflateReset
|
||||
# define deflateResetKeep z_deflateResetKeep
|
||||
# define deflateSetDictionary z_deflateSetDictionary
|
||||
# define deflateSetHeader z_deflateSetHeader
|
||||
# define deflateTune z_deflateTune
|
||||
# define deflate_copyright z_deflate_copyright
|
||||
# define get_crc_table z_get_crc_table
|
||||
# ifndef Z_SOLO
|
||||
# define gz_error z_gz_error
|
||||
# define gz_intmax z_gz_intmax
|
||||
# define gz_strwinerror z_gz_strwinerror
|
||||
# define gzbuffer z_gzbuffer
|
||||
# define gzclearerr z_gzclearerr
|
||||
# define gzclose z_gzclose
|
||||
# define gzclose_r z_gzclose_r
|
||||
# define gzclose_w z_gzclose_w
|
||||
# define gzdirect z_gzdirect
|
||||
# define gzdopen z_gzdopen
|
||||
# define gzeof z_gzeof
|
||||
# define gzerror z_gzerror
|
||||
# define gzflush z_gzflush
|
||||
# define gzfread z_gzfread
|
||||
# define gzfwrite z_gzfwrite
|
||||
# define gzgetc z_gzgetc
|
||||
# define gzgetc_ z_gzgetc_
|
||||
# define gzgets z_gzgets
|
||||
# define gzoffset z_gzoffset
|
||||
# define gzoffset64 z_gzoffset64
|
||||
# define gzopen z_gzopen
|
||||
# define gzopen64 z_gzopen64
|
||||
# ifdef _WIN32
|
||||
# define gzopen_w z_gzopen_w
|
||||
# endif
|
||||
# define gzprintf z_gzprintf
|
||||
# define gzputc z_gzputc
|
||||
# define gzputs z_gzputs
|
||||
# define gzread z_gzread
|
||||
# define gzrewind z_gzrewind
|
||||
# define gzseek z_gzseek
|
||||
# define gzseek64 z_gzseek64
|
||||
# define gzsetparams z_gzsetparams
|
||||
# define gztell z_gztell
|
||||
# define gztell64 z_gztell64
|
||||
# define gzungetc z_gzungetc
|
||||
# define gzvprintf z_gzvprintf
|
||||
# define gzwrite z_gzwrite
|
||||
# endif
|
||||
# define inflate z_inflate
|
||||
# define inflateBack z_inflateBack
|
||||
# define inflateBackEnd z_inflateBackEnd
|
||||
# define inflateBackInit z_inflateBackInit
|
||||
# define inflateBackInit_ z_inflateBackInit_
|
||||
# define inflateCodesUsed z_inflateCodesUsed
|
||||
# define inflateCopy z_inflateCopy
|
||||
# define inflateEnd z_inflateEnd
|
||||
# define inflateGetDictionary z_inflateGetDictionary
|
||||
# define inflateGetHeader z_inflateGetHeader
|
||||
# define inflateInit z_inflateInit
|
||||
# define inflateInit2 z_inflateInit2
|
||||
# define inflateInit2_ z_inflateInit2_
|
||||
# define inflateInit_ z_inflateInit_
|
||||
# define inflateMark z_inflateMark
|
||||
# define inflatePrime z_inflatePrime
|
||||
# define inflateReset z_inflateReset
|
||||
# define inflateReset2 z_inflateReset2
|
||||
# define inflateResetKeep z_inflateResetKeep
|
||||
# define inflateSetDictionary z_inflateSetDictionary
|
||||
# define inflateSync z_inflateSync
|
||||
# define inflateSyncPoint z_inflateSyncPoint
|
||||
# define inflateUndermine z_inflateUndermine
|
||||
# define inflateValidate z_inflateValidate
|
||||
# define inflate_copyright z_inflate_copyright
|
||||
# define inflate_fast z_inflate_fast
|
||||
# define inflate_table z_inflate_table
|
||||
# ifndef Z_SOLO
|
||||
# define uncompress z_uncompress
|
||||
# define uncompress2 z_uncompress2
|
||||
# endif
|
||||
# define zError z_zError
|
||||
# ifndef Z_SOLO
|
||||
# define zcalloc z_zcalloc
|
||||
# define zcfree z_zcfree
|
||||
# endif
|
||||
# define zlibCompileFlags z_zlibCompileFlags
|
||||
# define zlibVersion z_zlibVersion
|
||||
|
||||
/* all zlib typedefs in zlib.h and zconf.h */
|
||||
# define Byte z_Byte
|
||||
# define Bytef z_Bytef
|
||||
# define alloc_func z_alloc_func
|
||||
# define charf z_charf
|
||||
# define free_func z_free_func
|
||||
# ifndef Z_SOLO
|
||||
# define gzFile z_gzFile
|
||||
# endif
|
||||
# define gz_header z_gz_header
|
||||
# define gz_headerp z_gz_headerp
|
||||
# define in_func z_in_func
|
||||
# define intf z_intf
|
||||
# define out_func z_out_func
|
||||
# define uInt z_uInt
|
||||
# define uIntf z_uIntf
|
||||
# define uLong z_uLong
|
||||
# define uLongf z_uLongf
|
||||
# define voidp z_voidp
|
||||
# define voidpc z_voidpc
|
||||
# define voidpf z_voidpf
|
||||
|
||||
/* all zlib structs in zlib.h and zconf.h */
|
||||
# define gz_header_s z_gz_header_s
|
||||
# define internal_state z_internal_state
|
||||
|
||||
#endif
|
||||
|
||||
#if defined(__MSDOS__) && !defined(MSDOS)
|
||||
# define MSDOS
|
||||
#endif
|
||||
|
||||
/* WinCE doesn't have errno.h */
|
||||
#ifdef _WIN32_WCE
|
||||
# define NO_ERRNO_H
|
||||
#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
|
||||
# define OS2
|
||||
#endif
|
||||
#if defined(_WINDOWS) && !defined(WINDOWS)
|
||||
# define WINDOWS
|
||||
#endif
|
||||
#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
|
||||
# ifndef WIN32
|
||||
# define WIN32
|
||||
# endif
|
||||
#endif
|
||||
#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
|
||||
# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
|
||||
# ifndef SYS16BIT
|
||||
# define SYS16BIT
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Compile with -DMAXSEG_64K if the alloc function cannot allocate more
|
||||
* than 64k bytes at a time (needed on systems with 16-bit int).
|
||||
*/
|
||||
#if defined(MSDOS) && !defined(__32BIT__)
|
||||
#ifdef SYS16BIT
|
||||
# define MAXSEG_64K
|
||||
#endif
|
||||
#ifdef MSDOS
|
||||
# define UNALIGNED_OK
|
||||
#endif
|
||||
|
||||
#if (defined(MSDOS) || defined(_WINDOWS) || defined(WIN32)) && !defined(STDC)
|
||||
# define STDC
|
||||
#endif
|
||||
#if defined(__STDC__) || defined(__cplusplus) || defined(__OS2__)
|
||||
#ifdef __STDC_VERSION__
|
||||
# ifndef STDC
|
||||
# define STDC
|
||||
# endif
|
||||
# if __STDC_VERSION__ >= 199901L
|
||||
# ifndef STDC99
|
||||
# define STDC99
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
|
||||
# define STDC
|
||||
#endif
|
||||
#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
|
||||
# define STDC
|
||||
#endif
|
||||
#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
|
||||
# define STDC
|
||||
#endif
|
||||
#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
|
||||
# define STDC
|
||||
#endif
|
||||
|
||||
#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
|
||||
# define STDC
|
||||
#endif
|
||||
|
||||
#ifndef STDC
|
||||
# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
|
||||
# define const
|
||||
# define const /* note: need a more gentle solution here */
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* Some Mac compilers merge all .h files incorrectly: */
|
||||
#if defined(__MWERKS__) || defined(applec) ||defined(THINK_C) ||defined(__SC__)
|
||||
# define NO_DUMMY_DECL
|
||||
#if defined(ZLIB_CONST) && !defined(z_const)
|
||||
# define z_const const
|
||||
#else
|
||||
# define z_const
|
||||
#endif
|
||||
|
||||
/* Old Borland C and LCC incorrectly complains about missing returns: */
|
||||
#if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
|
||||
# define NEED_DUMMY_RETURN
|
||||
#endif
|
||||
|
||||
#if defined(__LCC__)
|
||||
# define NEED_DUMMY_RETURN
|
||||
#ifdef Z_SOLO
|
||||
typedef unsigned long z_size_t;
|
||||
#else
|
||||
# define z_longlong long long
|
||||
# if defined(NO_SIZE_T)
|
||||
typedef unsigned NO_SIZE_T z_size_t;
|
||||
# elif defined(STDC)
|
||||
# include <stddef.h>
|
||||
typedef size_t z_size_t;
|
||||
# else
|
||||
typedef unsigned long z_size_t;
|
||||
# endif
|
||||
# undef z_longlong
|
||||
#endif
|
||||
|
||||
/* Maximum value for memLevel in deflateInit2 */
|
||||
|
|
@ -133,7 +279,7 @@
|
|||
Of course this will generally degrade compression (there's no free lunch).
|
||||
|
||||
The memory requirements for inflate are (in bytes) 1 << windowBits
|
||||
that is, 32K for windowBits=15 (default value) plus a few kilobytes
|
||||
that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
|
||||
for small objects.
|
||||
*/
|
||||
|
||||
|
|
@ -147,75 +293,101 @@
|
|||
# endif
|
||||
#endif
|
||||
|
||||
#ifndef Z_ARG /* function prototypes for stdarg */
|
||||
# if defined(STDC) || defined(Z_HAVE_STDARG_H)
|
||||
# define Z_ARG(args) args
|
||||
# else
|
||||
# define Z_ARG(args) ()
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* The following definitions for FAR are needed only for MSDOS mixed
|
||||
* model programming (small or medium model with some far allocations).
|
||||
* This was tested only with MSC; for other MSDOS compilers you may have
|
||||
* to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
|
||||
* just define FAR to be empty.
|
||||
*/
|
||||
#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(__32BIT__)
|
||||
/* MSC small or medium model */
|
||||
# define SMALL_MEDIUM
|
||||
# ifdef _MSC_VER
|
||||
# define FAR _far
|
||||
# else
|
||||
# define FAR far
|
||||
# endif
|
||||
#endif
|
||||
#if defined(__BORLANDC__) && (defined(__SMALL__) || defined(__MEDIUM__))
|
||||
# ifndef __32BIT__
|
||||
#ifdef SYS16BIT
|
||||
# if defined(M_I86SM) || defined(M_I86MM)
|
||||
/* MSC small or medium model */
|
||||
# define SMALL_MEDIUM
|
||||
# define FAR _far
|
||||
# ifdef _MSC_VER
|
||||
# define FAR _far
|
||||
# else
|
||||
# define FAR far
|
||||
# endif
|
||||
# endif
|
||||
# if (defined(__SMALL__) || defined(__MEDIUM__))
|
||||
/* Turbo C small or medium model */
|
||||
# define SMALL_MEDIUM
|
||||
# ifdef __BORLANDC__
|
||||
# define FAR _far
|
||||
# else
|
||||
# define FAR far
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* Compile with -DZLIB_DLL for Windows DLL support */
|
||||
#if defined(ZLIB_DLL)
|
||||
# if defined(_WINDOWS) || defined(WINDOWS)
|
||||
#if defined(WINDOWS) || defined(WIN32)
|
||||
/* If building or using zlib as a DLL, define ZLIB_DLL.
|
||||
* This is not mandatory, but it offers a little performance increase.
|
||||
*/
|
||||
# ifdef ZLIB_DLL
|
||||
# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
|
||||
# ifdef ZLIB_INTERNAL
|
||||
# define ZEXTERN extern __declspec(dllexport)
|
||||
# else
|
||||
# define ZEXTERN extern __declspec(dllimport)
|
||||
# endif
|
||||
# endif
|
||||
# endif /* ZLIB_DLL */
|
||||
/* If building or using zlib with the WINAPI/WINAPIV calling convention,
|
||||
* define ZLIB_WINAPI.
|
||||
* Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
|
||||
*/
|
||||
# ifdef ZLIB_WINAPI
|
||||
# ifdef FAR
|
||||
# undef FAR
|
||||
# endif
|
||||
# include <windows.h>
|
||||
# define ZEXPORT(x) x WINAPI
|
||||
/* No need for _export, use ZLIB.DEF instead. */
|
||||
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
|
||||
# define ZEXPORT WINAPI
|
||||
# ifdef WIN32
|
||||
# define ZEXPORTVA(x) x WINAPIV
|
||||
# define ZEXPORTVA WINAPIV
|
||||
# else
|
||||
# define ZEXPORTVA(x) x FAR _cdecl _export
|
||||
# endif
|
||||
# endif
|
||||
# if defined (__BORLANDC__)
|
||||
# if (__BORLANDC__ >= 0x0500) && defined (WIN32)
|
||||
# include <windows.h>
|
||||
# define ZEXPORT(x) x __declspec(dllexport) WINAPI
|
||||
# define ZEXPORTRVA(x) x __declspec(dllexport) WINAPIV
|
||||
# else
|
||||
# if defined (_Windows) && defined (__DLL__)
|
||||
# define ZEXPORT(x) x _export
|
||||
# define ZEXPORTVA(x) x _export
|
||||
# endif
|
||||
# define ZEXPORTVA FAR CDECL
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined (__BEOS__)
|
||||
# ifdef ZLIB_DLL
|
||||
# ifdef ZLIB_INTERNAL
|
||||
# define ZEXPORT __declspec(dllexport)
|
||||
# define ZEXPORTVA __declspec(dllexport)
|
||||
# else
|
||||
# define ZEXPORT __declspec(dllimport)
|
||||
# define ZEXPORTVA __declspec(dllimport)
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifndef ZEXTERN
|
||||
# define ZEXTERN extern
|
||||
#endif
|
||||
#ifndef ZEXPORT
|
||||
# define ZEXPORT(x) static x
|
||||
# define ZEXPORT
|
||||
#endif
|
||||
#ifndef ZEXPORTVA
|
||||
# define ZEXPORTVA(x) static x
|
||||
#endif
|
||||
#ifndef ZEXTERN
|
||||
# define ZEXTERN(x) static x
|
||||
#endif
|
||||
#ifndef ZEXTERNDEF
|
||||
# define ZEXTERNDEF(x) static x
|
||||
# define ZEXPORTVA
|
||||
#endif
|
||||
|
||||
#ifndef FAR
|
||||
# define FAR
|
||||
# define FAR
|
||||
#endif
|
||||
|
||||
#if !defined(MACOS) && !defined(TARGET_OS_MAC)
|
||||
#if !defined(__MACTYPES__)
|
||||
typedef unsigned char Byte; /* 8 bits */
|
||||
#endif
|
||||
typedef unsigned int uInt; /* 16 bits or more */
|
||||
|
|
@ -233,52 +405,130 @@ typedef uInt FAR uIntf;
|
|||
typedef uLong FAR uLongf;
|
||||
|
||||
#ifdef STDC
|
||||
typedef void FAR *voidpf;
|
||||
typedef void *voidp;
|
||||
typedef void const *voidpc;
|
||||
typedef void FAR *voidpf;
|
||||
typedef void *voidp;
|
||||
#else
|
||||
typedef Byte FAR *voidpf;
|
||||
typedef Byte *voidp;
|
||||
typedef Byte const *voidpc;
|
||||
typedef Byte FAR *voidpf;
|
||||
typedef Byte *voidp;
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_UNISTD_H
|
||||
# include <sys/types.h> /* for off_t */
|
||||
# include <unistd.h> /* for SEEK_* and off_t */
|
||||
# define z_off_t off_t
|
||||
#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
|
||||
# include <limits.h>
|
||||
# if (UINT_MAX == 0xffffffffUL)
|
||||
# define Z_U4 unsigned
|
||||
# elif (ULONG_MAX == 0xffffffffUL)
|
||||
# define Z_U4 unsigned long
|
||||
# elif (USHRT_MAX == 0xffffffffUL)
|
||||
# define Z_U4 unsigned short
|
||||
# endif
|
||||
#endif
|
||||
#ifndef SEEK_SET
|
||||
|
||||
#ifdef Z_U4
|
||||
typedef Z_U4 z_crc_t;
|
||||
#else
|
||||
typedef unsigned long z_crc_t;
|
||||
#endif
|
||||
|
||||
#if 1 /* was set to #if 1 by ./configure */
|
||||
# define Z_HAVE_UNISTD_H
|
||||
#endif
|
||||
|
||||
#if 1 /* was set to #if 1 by ./configure */
|
||||
# define Z_HAVE_STDARG_H
|
||||
#endif
|
||||
|
||||
#ifdef STDC
|
||||
# ifndef Z_SOLO
|
||||
# include <sys/types.h> /* for off_t */
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
|
||||
# ifndef Z_SOLO
|
||||
# include <stdarg.h> /* for va_list */
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef _WIN32
|
||||
# ifndef Z_SOLO
|
||||
# include <stddef.h> /* for wchar_t */
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
|
||||
* "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
|
||||
* though the former does not conform to the LFS document), but considering
|
||||
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
|
||||
* equivalently requesting no 64-bit operations
|
||||
*/
|
||||
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
|
||||
# undef _LARGEFILE64_SOURCE
|
||||
#endif
|
||||
|
||||
#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
|
||||
# define Z_HAVE_UNISTD_H
|
||||
#endif
|
||||
#ifndef Z_SOLO
|
||||
# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
|
||||
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
|
||||
# ifdef VMS
|
||||
# include <unixio.h> /* for off_t */
|
||||
# endif
|
||||
# ifndef z_off_t
|
||||
# define z_off_t off_t
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
|
||||
# define Z_LFS64
|
||||
#endif
|
||||
|
||||
#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
|
||||
# define Z_LARGE64
|
||||
#endif
|
||||
|
||||
#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
|
||||
# define Z_WANT64
|
||||
#endif
|
||||
|
||||
#if !defined(SEEK_SET) && !defined(Z_SOLO)
|
||||
# define SEEK_SET 0 /* Seek from beginning of file. */
|
||||
# define SEEK_CUR 1 /* Seek from current position. */
|
||||
# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
|
||||
#endif
|
||||
|
||||
#ifndef z_off_t
|
||||
# define z_off_t long
|
||||
# define z_off_t long
|
||||
#endif
|
||||
|
||||
#if !defined(_WIN32) && defined(Z_LARGE64)
|
||||
# define z_off64_t off64_t
|
||||
#else
|
||||
# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
|
||||
# define z_off64_t __int64
|
||||
# else
|
||||
# define z_off64_t z_off_t
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* MVS linker does not support external names larger than 8 bytes */
|
||||
#if defined(__MVS__)
|
||||
# pragma map(deflateInit_,"DEIN")
|
||||
# pragma map(deflateInit2_,"DEIN2")
|
||||
# pragma map(deflateEnd,"DEEND")
|
||||
# pragma map(inflateInit_,"ININ")
|
||||
# pragma map(inflateInit2_,"ININ2")
|
||||
# pragma map(inflateEnd,"INEND")
|
||||
# pragma map(inflateSync,"INSY")
|
||||
# pragma map(inflateSetDictionary,"INSEDI")
|
||||
# pragma map(inflate_blocks,"INBL")
|
||||
# pragma map(inflate_blocks_new,"INBLNE")
|
||||
# pragma map(inflate_blocks_free,"INBLFR")
|
||||
# pragma map(inflate_blocks_reset,"INBLRE")
|
||||
# pragma map(inflate_codes_free,"INCOFR")
|
||||
# pragma map(inflate_codes,"INCO")
|
||||
# pragma map(inflate_fast,"INFA")
|
||||
# pragma map(inflate_flush,"INFLU")
|
||||
# pragma map(inflate_mask,"INMA")
|
||||
# pragma map(inflate_set_dictionary,"INSEDI2")
|
||||
# pragma map(inflate_copyright,"INCOPY")
|
||||
# pragma map(inflate_trees_bits,"INTRBI")
|
||||
# pragma map(inflate_trees_dynamic,"INTRDY")
|
||||
# pragma map(inflate_trees_fixed,"INTRFI")
|
||||
# pragma map(inflate_trees_free,"INTRFR")
|
||||
#pragma map(deflateInit_,"DEIN")
|
||||
#pragma map(deflateInit2_,"DEIN2")
|
||||
#pragma map(deflateEnd,"DEEND")
|
||||
#pragma map(deflateBound,"DEBND")
|
||||
#pragma map(inflateInit_,"ININ")
|
||||
#pragma map(inflateInit2_,"ININ2")
|
||||
#pragma map(inflateEnd,"INEND")
|
||||
#pragma map(inflateSync,"INSY")
|
||||
#pragma map(inflateSetDictionary,"INSEDI")
|
||||
#pragma map(compressBound,"CMBND")
|
||||
#pragma map(inflate_table,"INTABL")
|
||||
#pragma map(inflate_fast,"INFA")
|
||||
#pragma map(inflate_copyright,"INCOPY")
|
||||
#endif
|
||||
|
||||
#endif /* _ZCONF_H */
|
||||
#endif /* ZCONF_H */
|
||||
|
|
|
|||
|
|
@ -0,0 +1,25 @@
|
|||
/* gzclose.c -- zlib gzclose() function
|
||||
* Copyright (C) 2004, 2010 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "gzguts.h"
|
||||
|
||||
/* gzclose() is in a separate file so that it is linked in only if it is used.
|
||||
That way the other gzclose functions can be used instead to avoid linking in
|
||||
unneeded compression or decompression routines. */
|
||||
int ZEXPORT gzclose(file)
|
||||
gzFile file;
|
||||
{
|
||||
#ifndef NO_GZCOMPRESS
|
||||
gz_statep state;
|
||||
|
||||
if (file == NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (gz_statep)file;
|
||||
|
||||
return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
|
||||
#else
|
||||
return gzclose_r(file);
|
||||
#endif
|
||||
}
|
||||
|
|
@ -0,0 +1,221 @@
|
|||
/* gzguts.h -- zlib internal header definitions for gz* operations
|
||||
* Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#ifndef Z_GZGUTS_H
|
||||
#define Z_GZGUTS_H
|
||||
#ifdef _LARGEFILE64_SOURCE
|
||||
# ifndef _LARGEFILE_SOURCE
|
||||
# define _LARGEFILE_SOURCE 1
|
||||
# endif
|
||||
# ifdef _FILE_OFFSET_BITS
|
||||
# undef _FILE_OFFSET_BITS
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_HIDDEN
|
||||
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
|
||||
#else
|
||||
# define ZLIB_INTERNAL
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include "zlib.h"
|
||||
#ifdef STDC
|
||||
# include <string.h>
|
||||
# include <stdlib.h>
|
||||
# include <limits.h>
|
||||
#endif
|
||||
|
||||
#ifndef _POSIX_SOURCE
|
||||
# define _POSIX_SOURCE
|
||||
#endif
|
||||
#include <fcntl.h>
|
||||
|
||||
#ifdef _WIN32
|
||||
# include <stddef.h>
|
||||
#endif
|
||||
|
||||
#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
|
||||
# include <io.h>
|
||||
#endif
|
||||
|
||||
#if defined(_WIN32) || defined(__CYGWIN__)
|
||||
# define WIDECHAR
|
||||
#endif
|
||||
|
||||
#ifdef WINAPI_FAMILY
|
||||
# define open _open
|
||||
# define read _read
|
||||
# define write _write
|
||||
# define close _close
|
||||
#endif
|
||||
|
||||
#ifdef NO_DEFLATE /* for compatibility with old definition */
|
||||
# define NO_GZCOMPRESS
|
||||
#endif
|
||||
|
||||
#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
|
||||
# ifndef HAVE_VSNPRINTF
|
||||
# define HAVE_VSNPRINTF
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined(__CYGWIN__)
|
||||
# ifndef HAVE_VSNPRINTF
|
||||
# define HAVE_VSNPRINTF
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
|
||||
# ifndef HAVE_VSNPRINTF
|
||||
# define HAVE_VSNPRINTF
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_VSNPRINTF
|
||||
# ifdef MSDOS
|
||||
/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
|
||||
but for now we just assume it doesn't. */
|
||||
# define NO_vsnprintf
|
||||
# endif
|
||||
# ifdef __TURBOC__
|
||||
# define NO_vsnprintf
|
||||
# endif
|
||||
# ifdef WIN32
|
||||
/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
|
||||
# if !defined(vsnprintf) && !defined(NO_vsnprintf)
|
||||
# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
|
||||
# define vsnprintf _vsnprintf
|
||||
# endif
|
||||
# endif
|
||||
# endif
|
||||
# ifdef __SASC
|
||||
# define NO_vsnprintf
|
||||
# endif
|
||||
# ifdef VMS
|
||||
# define NO_vsnprintf
|
||||
# endif
|
||||
# ifdef __OS400__
|
||||
# define NO_vsnprintf
|
||||
# endif
|
||||
# ifdef __MVS__
|
||||
# define NO_vsnprintf
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* unlike snprintf (which is required in C99), _snprintf does not guarantee
|
||||
null termination of the result -- however this is only used in gzlib.c where
|
||||
the result is assured to fit in the space provided */
|
||||
#if defined(_MSC_VER) && _MSC_VER < 1900
|
||||
# define snprintf _snprintf
|
||||
#endif
|
||||
|
||||
#ifndef local
|
||||
# define local static
|
||||
#endif
|
||||
/* since "static" is used to mean two completely different things in C, we
|
||||
define "local" for the non-static meaning of "static", for readability
|
||||
(compile with -Dlocal if your debugger can't find static symbols) */
|
||||
|
||||
/* gz* functions always use library allocation functions */
|
||||
#ifndef STDC
|
||||
extern voidp malloc OF((uInt size));
|
||||
extern void free OF((voidpf ptr));
|
||||
#endif
|
||||
|
||||
/* get errno and strerror definition */
|
||||
#if defined UNDER_CE
|
||||
# include <windows.h>
|
||||
# define zstrerror() gz_strwinerror((DWORD)GetLastError())
|
||||
#else
|
||||
# ifndef NO_STRERROR
|
||||
# include <errno.h>
|
||||
# define zstrerror() strerror(errno)
|
||||
# else
|
||||
# define zstrerror() "stdio error (consult errno)"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* provide prototypes for these when building zlib without LFS */
|
||||
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
|
||||
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
|
||||
ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
|
||||
ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
|
||||
ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
|
||||
#endif
|
||||
|
||||
/* default memLevel */
|
||||
#if MAX_MEM_LEVEL >= 8
|
||||
# define DEF_MEM_LEVEL 8
|
||||
#else
|
||||
# define DEF_MEM_LEVEL MAX_MEM_LEVEL
|
||||
#endif
|
||||
|
||||
/* default i/o buffer size -- double this for output when reading (this and
|
||||
twice this must be able to fit in an unsigned type) */
|
||||
#define GZBUFSIZE 8192
|
||||
|
||||
/* gzip modes, also provide a little integrity check on the passed structure */
|
||||
#define GZ_NONE 0
|
||||
#define GZ_READ 7247
|
||||
#define GZ_WRITE 31153
|
||||
#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
|
||||
|
||||
/* values for gz_state how */
|
||||
#define LOOK 0 /* look for a gzip header */
|
||||
#define COPY 1 /* copy input directly */
|
||||
#define GZIP 2 /* decompress a gzip stream */
|
||||
|
||||
/* internal gzip file state data structure */
|
||||
typedef struct {
|
||||
/* exposed contents for gzgetc() macro */
|
||||
struct gzFile_s x; /* "x" for exposed */
|
||||
/* x.have: number of bytes available at x.next */
|
||||
/* x.next: next output data to deliver or write */
|
||||
/* x.pos: current position in uncompressed data */
|
||||
/* used for both reading and writing */
|
||||
int mode; /* see gzip modes above */
|
||||
int fd; /* file descriptor */
|
||||
char *path; /* path or fd for error messages */
|
||||
unsigned size; /* buffer size, zero if not allocated yet */
|
||||
unsigned want; /* requested buffer size, default is GZBUFSIZE */
|
||||
unsigned char *in; /* input buffer (double-sized when writing) */
|
||||
unsigned char *out; /* output buffer (double-sized when reading) */
|
||||
int direct; /* 0 if processing gzip, 1 if transparent */
|
||||
/* just for reading */
|
||||
int how; /* 0: get header, 1: copy, 2: decompress */
|
||||
z_off64_t start; /* where the gzip data started, for rewinding */
|
||||
int eof; /* true if end of input file reached */
|
||||
int past; /* true if read requested past end */
|
||||
/* just for writing */
|
||||
int level; /* compression level */
|
||||
int strategy; /* compression strategy */
|
||||
/* seek request */
|
||||
z_off64_t skip; /* amount to skip (already rewound if backwards) */
|
||||
int seek; /* true if seek request pending */
|
||||
/* error information */
|
||||
int err; /* error code */
|
||||
char *msg; /* error message */
|
||||
/* zlib inflate or deflate stream */
|
||||
z_stream strm; /* stream structure in-place (not a pointer) */
|
||||
} gz_state;
|
||||
typedef gz_state FAR *gz_statep;
|
||||
|
||||
/* shared functions */
|
||||
void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
|
||||
#if defined UNDER_CE
|
||||
char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
|
||||
#endif
|
||||
|
||||
/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
|
||||
value -- needed when comparing unsigned to z_off64_t, which is signed
|
||||
(possible z_off64_t types off_t, off64_t, and long are all signed) */
|
||||
#ifdef INT_MAX
|
||||
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
|
||||
#else
|
||||
unsigned ZLIB_INTERNAL gz_intmax OF((void));
|
||||
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
|
||||
#endif
|
||||
#endif
|
||||
|
|
@ -0,0 +1,637 @@
|
|||
/* gzlib.c -- zlib functions common to reading and writing gzip files
|
||||
* Copyright (C) 2004-2017 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "gzguts.h"
|
||||
|
||||
#if defined(_WIN32) && !defined(__BORLANDC__) && !defined(__MINGW32__)
|
||||
# define LSEEK _lseeki64
|
||||
#else
|
||||
#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
|
||||
# define LSEEK lseek64
|
||||
#else
|
||||
# define LSEEK lseek
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* Local functions */
|
||||
local void gz_reset OF((gz_statep));
|
||||
local gzFile gz_open OF((const void *, int, const char *));
|
||||
|
||||
#if defined UNDER_CE
|
||||
|
||||
/* Map the Windows error number in ERROR to a locale-dependent error message
|
||||
string and return a pointer to it. Typically, the values for ERROR come
|
||||
from GetLastError.
|
||||
|
||||
The string pointed to shall not be modified by the application, but may be
|
||||
overwritten by a subsequent call to gz_strwinerror
|
||||
|
||||
The gz_strwinerror function does not change the current setting of
|
||||
GetLastError. */
|
||||
char ZLIB_INTERNAL *gz_strwinerror (error)
|
||||
DWORD error;
|
||||
{
|
||||
static char buf[1024];
|
||||
|
||||
wchar_t *msgbuf;
|
||||
DWORD lasterr = GetLastError();
|
||||
DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
|
||||
| FORMAT_MESSAGE_ALLOCATE_BUFFER,
|
||||
NULL,
|
||||
error,
|
||||
0, /* Default language */
|
||||
(LPVOID)&msgbuf,
|
||||
0,
|
||||
NULL);
|
||||
if (chars != 0) {
|
||||
/* If there is an \r\n appended, zap it. */
|
||||
if (chars >= 2
|
||||
&& msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
|
||||
chars -= 2;
|
||||
msgbuf[chars] = 0;
|
||||
}
|
||||
|
||||
if (chars > sizeof (buf) - 1) {
|
||||
chars = sizeof (buf) - 1;
|
||||
msgbuf[chars] = 0;
|
||||
}
|
||||
|
||||
wcstombs(buf, msgbuf, chars + 1);
|
||||
LocalFree(msgbuf);
|
||||
}
|
||||
else {
|
||||
sprintf(buf, "unknown win32 error (%ld)", error);
|
||||
}
|
||||
|
||||
SetLastError(lasterr);
|
||||
return buf;
|
||||
}
|
||||
|
||||
#endif /* UNDER_CE */
|
||||
|
||||
/* Reset gzip file state */
|
||||
local void gz_reset(state)
|
||||
gz_statep state;
|
||||
{
|
||||
state->x.have = 0; /* no output data available */
|
||||
if (state->mode == GZ_READ) { /* for reading ... */
|
||||
state->eof = 0; /* not at end of file */
|
||||
state->past = 0; /* have not read past end yet */
|
||||
state->how = LOOK; /* look for gzip header */
|
||||
}
|
||||
state->seek = 0; /* no seek request pending */
|
||||
gz_error(state, Z_OK, NULL); /* clear error */
|
||||
state->x.pos = 0; /* no uncompressed data yet */
|
||||
state->strm.avail_in = 0; /* no input data yet */
|
||||
}
|
||||
|
||||
/* Open a gzip file either by name or file descriptor. */
|
||||
local gzFile gz_open(path, fd, mode)
|
||||
const void *path;
|
||||
int fd;
|
||||
const char *mode;
|
||||
{
|
||||
gz_statep state;
|
||||
z_size_t len;
|
||||
int oflag;
|
||||
#ifdef O_CLOEXEC
|
||||
int cloexec = 0;
|
||||
#endif
|
||||
#ifdef O_EXCL
|
||||
int exclusive = 0;
|
||||
#endif
|
||||
|
||||
/* check input */
|
||||
if (path == NULL)
|
||||
return NULL;
|
||||
|
||||
/* allocate gzFile structure to return */
|
||||
state = (gz_statep)malloc(sizeof(gz_state));
|
||||
if (state == NULL)
|
||||
return NULL;
|
||||
state->size = 0; /* no buffers allocated yet */
|
||||
state->want = GZBUFSIZE; /* requested buffer size */
|
||||
state->msg = NULL; /* no error message yet */
|
||||
|
||||
/* interpret mode */
|
||||
state->mode = GZ_NONE;
|
||||
state->level = Z_DEFAULT_COMPRESSION;
|
||||
state->strategy = Z_DEFAULT_STRATEGY;
|
||||
state->direct = 0;
|
||||
while (*mode) {
|
||||
if (*mode >= '0' && *mode <= '9')
|
||||
state->level = *mode - '0';
|
||||
else
|
||||
switch (*mode) {
|
||||
case 'r':
|
||||
state->mode = GZ_READ;
|
||||
break;
|
||||
#ifndef NO_GZCOMPRESS
|
||||
case 'w':
|
||||
state->mode = GZ_WRITE;
|
||||
break;
|
||||
case 'a':
|
||||
state->mode = GZ_APPEND;
|
||||
break;
|
||||
#endif
|
||||
case '+': /* can't read and write at the same time */
|
||||
free(state);
|
||||
return NULL;
|
||||
case 'b': /* ignore -- will request binary anyway */
|
||||
break;
|
||||
#ifdef O_CLOEXEC
|
||||
case 'e':
|
||||
cloexec = 1;
|
||||
break;
|
||||
#endif
|
||||
#ifdef O_EXCL
|
||||
case 'x':
|
||||
exclusive = 1;
|
||||
break;
|
||||
#endif
|
||||
case 'f':
|
||||
state->strategy = Z_FILTERED;
|
||||
break;
|
||||
case 'h':
|
||||
state->strategy = Z_HUFFMAN_ONLY;
|
||||
break;
|
||||
case 'R':
|
||||
state->strategy = Z_RLE;
|
||||
break;
|
||||
case 'F':
|
||||
state->strategy = Z_FIXED;
|
||||
break;
|
||||
case 'T':
|
||||
state->direct = 1;
|
||||
break;
|
||||
default: /* could consider as an error, but just ignore */
|
||||
;
|
||||
}
|
||||
mode++;
|
||||
}
|
||||
|
||||
/* must provide an "r", "w", or "a" */
|
||||
if (state->mode == GZ_NONE) {
|
||||
free(state);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* can't force transparent read */
|
||||
if (state->mode == GZ_READ) {
|
||||
if (state->direct) {
|
||||
free(state);
|
||||
return NULL;
|
||||
}
|
||||
state->direct = 1; /* for empty file */
|
||||
}
|
||||
|
||||
/* save the path name for error messages */
|
||||
#ifdef WIDECHAR
|
||||
if (fd == -2) {
|
||||
len = wcstombs(NULL, path, 0);
|
||||
if (len == (z_size_t)-1)
|
||||
len = 0;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
len = strlen((const char *)path);
|
||||
state->path = (char *)malloc(len + 1);
|
||||
if (state->path == NULL) {
|
||||
free(state);
|
||||
return NULL;
|
||||
}
|
||||
#ifdef WIDECHAR
|
||||
if (fd == -2)
|
||||
if (len)
|
||||
wcstombs(state->path, path, len + 1);
|
||||
else
|
||||
*(state->path) = 0;
|
||||
else
|
||||
#endif
|
||||
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
|
||||
(void)snprintf(state->path, len + 1, "%s", (const char *)path);
|
||||
#else
|
||||
strcpy(state->path, path);
|
||||
#endif
|
||||
|
||||
/* compute the flags for open() */
|
||||
oflag =
|
||||
#ifdef O_LARGEFILE
|
||||
O_LARGEFILE |
|
||||
#endif
|
||||
#ifdef O_BINARY
|
||||
O_BINARY |
|
||||
#endif
|
||||
#ifdef O_CLOEXEC
|
||||
(cloexec ? O_CLOEXEC : 0) |
|
||||
#endif
|
||||
(state->mode == GZ_READ ?
|
||||
O_RDONLY :
|
||||
(O_WRONLY | O_CREAT |
|
||||
#ifdef O_EXCL
|
||||
(exclusive ? O_EXCL : 0) |
|
||||
#endif
|
||||
(state->mode == GZ_WRITE ?
|
||||
O_TRUNC :
|
||||
O_APPEND)));
|
||||
|
||||
/* open the file with the appropriate flags (or just use fd) */
|
||||
state->fd = fd > -1 ? fd : (
|
||||
#ifdef WIDECHAR
|
||||
fd == -2 ? _wopen(path, oflag, 0666) :
|
||||
#endif
|
||||
open((const char *)path, oflag, 0666));
|
||||
if (state->fd == -1) {
|
||||
free(state->path);
|
||||
free(state);
|
||||
return NULL;
|
||||
}
|
||||
if (state->mode == GZ_APPEND) {
|
||||
LSEEK(state->fd, 0, SEEK_END); /* so gzoffset() is correct */
|
||||
state->mode = GZ_WRITE; /* simplify later checks */
|
||||
}
|
||||
|
||||
/* save the current position for rewinding (only if reading) */
|
||||
if (state->mode == GZ_READ) {
|
||||
state->start = LSEEK(state->fd, 0, SEEK_CUR);
|
||||
if (state->start == -1) state->start = 0;
|
||||
}
|
||||
|
||||
/* initialize stream */
|
||||
gz_reset(state);
|
||||
|
||||
/* return stream */
|
||||
return (gzFile)state;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
gzFile ZEXPORT gzopen(path, mode)
|
||||
const char *path;
|
||||
const char *mode;
|
||||
{
|
||||
return gz_open(path, -1, mode);
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
gzFile ZEXPORT gzopen64(path, mode)
|
||||
const char *path;
|
||||
const char *mode;
|
||||
{
|
||||
return gz_open(path, -1, mode);
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
gzFile ZEXPORT gzdopen(fd, mode)
|
||||
int fd;
|
||||
const char *mode;
|
||||
{
|
||||
char *path; /* identifier for error messages */
|
||||
gzFile gz;
|
||||
|
||||
if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
|
||||
return NULL;
|
||||
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
|
||||
(void)snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd);
|
||||
#else
|
||||
sprintf(path, "<fd:%d>", fd); /* for debugging */
|
||||
#endif
|
||||
gz = gz_open(path, fd, mode);
|
||||
free(path);
|
||||
return gz;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
#ifdef WIDECHAR
|
||||
gzFile ZEXPORT gzopen_w(path, mode)
|
||||
const wchar_t *path;
|
||||
const char *mode;
|
||||
{
|
||||
return gz_open(path, -2, mode);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzbuffer(file, size)
|
||||
gzFile file;
|
||||
unsigned size;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure and check integrity */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
|
||||
return -1;
|
||||
|
||||
/* make sure we haven't already allocated memory */
|
||||
if (state->size != 0)
|
||||
return -1;
|
||||
|
||||
/* check and set requested size */
|
||||
if ((size << 1) < size)
|
||||
return -1; /* need to be able to double it */
|
||||
if (size < 2)
|
||||
size = 2; /* need two bytes to check magic header */
|
||||
state->want = size;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzrewind(file)
|
||||
gzFile file;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're reading and that there's no error */
|
||||
if (state->mode != GZ_READ ||
|
||||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
|
||||
return -1;
|
||||
|
||||
/* back up and start over */
|
||||
if (LSEEK(state->fd, state->start, SEEK_SET) == -1)
|
||||
return -1;
|
||||
gz_reset(state);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_off64_t ZEXPORT gzseek64(file, offset, whence)
|
||||
gzFile file;
|
||||
z_off64_t offset;
|
||||
int whence;
|
||||
{
|
||||
unsigned n;
|
||||
z_off64_t ret;
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure and check integrity */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
|
||||
return -1;
|
||||
|
||||
/* check that there's no error */
|
||||
if (state->err != Z_OK && state->err != Z_BUF_ERROR)
|
||||
return -1;
|
||||
|
||||
/* can only seek from start or relative to current position */
|
||||
if (whence != SEEK_SET && whence != SEEK_CUR)
|
||||
return -1;
|
||||
|
||||
/* normalize offset to a SEEK_CUR specification */
|
||||
if (whence == SEEK_SET)
|
||||
offset -= state->x.pos;
|
||||
else if (state->seek)
|
||||
offset += state->skip;
|
||||
state->seek = 0;
|
||||
|
||||
/* if within raw area while reading, just go there */
|
||||
if (state->mode == GZ_READ && state->how == COPY &&
|
||||
state->x.pos + offset >= 0) {
|
||||
ret = LSEEK(state->fd, offset - state->x.have, SEEK_CUR);
|
||||
if (ret == -1)
|
||||
return -1;
|
||||
state->x.have = 0;
|
||||
state->eof = 0;
|
||||
state->past = 0;
|
||||
state->seek = 0;
|
||||
gz_error(state, Z_OK, NULL);
|
||||
state->strm.avail_in = 0;
|
||||
state->x.pos += offset;
|
||||
return state->x.pos;
|
||||
}
|
||||
|
||||
/* calculate skip amount, rewinding if needed for back seek when reading */
|
||||
if (offset < 0) {
|
||||
if (state->mode != GZ_READ) /* writing -- can't go backwards */
|
||||
return -1;
|
||||
offset += state->x.pos;
|
||||
if (offset < 0) /* before start of file! */
|
||||
return -1;
|
||||
if (gzrewind(file) == -1) /* rewind, then skip to offset */
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* if reading, skip what's in output buffer (one less gzgetc() check) */
|
||||
if (state->mode == GZ_READ) {
|
||||
n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ?
|
||||
(unsigned)offset : state->x.have;
|
||||
state->x.have -= n;
|
||||
state->x.next += n;
|
||||
state->x.pos += n;
|
||||
offset -= n;
|
||||
}
|
||||
|
||||
/* request skip (if not zero) */
|
||||
if (offset) {
|
||||
state->seek = 1;
|
||||
state->skip = offset;
|
||||
}
|
||||
return state->x.pos + offset;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_off_t ZEXPORT gzseek(file, offset, whence)
|
||||
gzFile file;
|
||||
z_off_t offset;
|
||||
int whence;
|
||||
{
|
||||
z_off64_t ret;
|
||||
|
||||
ret = gzseek64(file, (z_off64_t)offset, whence);
|
||||
return ret == (z_off_t)ret ? (z_off_t)ret : -1;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_off64_t ZEXPORT gztell64(file)
|
||||
gzFile file;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure and check integrity */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
|
||||
return -1;
|
||||
|
||||
/* return position */
|
||||
return state->x.pos + (state->seek ? state->skip : 0);
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_off_t ZEXPORT gztell(file)
|
||||
gzFile file;
|
||||
{
|
||||
z_off64_t ret;
|
||||
|
||||
ret = gztell64(file);
|
||||
return ret == (z_off_t)ret ? (z_off_t)ret : -1;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_off64_t ZEXPORT gzoffset64(file)
|
||||
gzFile file;
|
||||
{
|
||||
z_off64_t offset;
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure and check integrity */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
|
||||
return -1;
|
||||
|
||||
/* compute and return effective offset in file */
|
||||
offset = LSEEK(state->fd, 0, SEEK_CUR);
|
||||
if (offset == -1)
|
||||
return -1;
|
||||
if (state->mode == GZ_READ) /* reading */
|
||||
offset -= state->strm.avail_in; /* don't count buffered input */
|
||||
return offset;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_off_t ZEXPORT gzoffset(file)
|
||||
gzFile file;
|
||||
{
|
||||
z_off64_t ret;
|
||||
|
||||
ret = gzoffset64(file);
|
||||
return ret == (z_off_t)ret ? (z_off_t)ret : -1;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzeof(file)
|
||||
gzFile file;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure and check integrity */
|
||||
if (file == NULL)
|
||||
return 0;
|
||||
state = (gz_statep)file;
|
||||
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
|
||||
return 0;
|
||||
|
||||
/* return end-of-file state */
|
||||
return state->mode == GZ_READ ? state->past : 0;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
const char * ZEXPORT gzerror(file, errnum)
|
||||
gzFile file;
|
||||
int *errnum;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure and check integrity */
|
||||
if (file == NULL)
|
||||
return NULL;
|
||||
state = (gz_statep)file;
|
||||
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
|
||||
return NULL;
|
||||
|
||||
/* return error information */
|
||||
if (errnum != NULL)
|
||||
*errnum = state->err;
|
||||
return state->err == Z_MEM_ERROR ? "out of memory" :
|
||||
(state->msg == NULL ? "" : state->msg);
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
void ZEXPORT gzclearerr(file)
|
||||
gzFile file;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure and check integrity */
|
||||
if (file == NULL)
|
||||
return;
|
||||
state = (gz_statep)file;
|
||||
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
|
||||
return;
|
||||
|
||||
/* clear error and end-of-file */
|
||||
if (state->mode == GZ_READ) {
|
||||
state->eof = 0;
|
||||
state->past = 0;
|
||||
}
|
||||
gz_error(state, Z_OK, NULL);
|
||||
}
|
||||
|
||||
/* Create an error message in allocated memory and set state->err and
|
||||
state->msg accordingly. Free any previous error message already there. Do
|
||||
not try to free or allocate space if the error is Z_MEM_ERROR (out of
|
||||
memory). Simply save the error message as a static string. If there is an
|
||||
allocation failure constructing the error message, then convert the error to
|
||||
out of memory. */
|
||||
void ZLIB_INTERNAL gz_error(state, err, msg)
|
||||
gz_statep state;
|
||||
int err;
|
||||
const char *msg;
|
||||
{
|
||||
/* free previously allocated message and clear */
|
||||
if (state->msg != NULL) {
|
||||
if (state->err != Z_MEM_ERROR)
|
||||
free(state->msg);
|
||||
state->msg = NULL;
|
||||
}
|
||||
|
||||
/* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */
|
||||
if (err != Z_OK && err != Z_BUF_ERROR)
|
||||
state->x.have = 0;
|
||||
|
||||
/* set error code, and if no message, then done */
|
||||
state->err = err;
|
||||
if (msg == NULL)
|
||||
return;
|
||||
|
||||
/* for an out of memory error, return literal string when requested */
|
||||
if (err == Z_MEM_ERROR)
|
||||
return;
|
||||
|
||||
/* construct error message with path */
|
||||
if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
|
||||
NULL) {
|
||||
state->err = Z_MEM_ERROR;
|
||||
return;
|
||||
}
|
||||
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
|
||||
(void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
|
||||
"%s%s%s", state->path, ": ", msg);
|
||||
#else
|
||||
strcpy(state->msg, state->path);
|
||||
strcat(state->msg, ": ");
|
||||
strcat(state->msg, msg);
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifndef INT_MAX
|
||||
/* portably return maximum value for an int (when limits.h presumed not
|
||||
available) -- we need to do this to cover cases where 2's complement not
|
||||
used, since C standard permits 1's complement and sign-bit representations,
|
||||
otherwise we could just use ((unsigned)-1) >> 1 */
|
||||
unsigned ZLIB_INTERNAL gz_intmax()
|
||||
{
|
||||
unsigned p, q;
|
||||
|
||||
p = 1;
|
||||
do {
|
||||
q = p;
|
||||
p <<= 1;
|
||||
p++;
|
||||
} while (p > q);
|
||||
return q >> 1;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,654 @@
|
|||
/* gzread.c -- zlib functions for reading gzip files
|
||||
* Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "gzguts.h"
|
||||
|
||||
/* Local functions */
|
||||
local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
|
||||
local int gz_avail OF((gz_statep));
|
||||
local int gz_look OF((gz_statep));
|
||||
local int gz_decomp OF((gz_statep));
|
||||
local int gz_fetch OF((gz_statep));
|
||||
local int gz_skip OF((gz_statep, z_off64_t));
|
||||
local z_size_t gz_read OF((gz_statep, voidp, z_size_t));
|
||||
|
||||
/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from
|
||||
state->fd, and update state->eof, state->err, and state->msg as appropriate.
|
||||
This function needs to loop on read(), since read() is not guaranteed to
|
||||
read the number of bytes requested, depending on the type of descriptor. */
|
||||
local int gz_load(state, buf, len, have)
|
||||
gz_statep state;
|
||||
unsigned char *buf;
|
||||
unsigned len;
|
||||
unsigned *have;
|
||||
{
|
||||
int ret;
|
||||
unsigned get, max = ((unsigned)-1 >> 2) + 1;
|
||||
|
||||
*have = 0;
|
||||
do {
|
||||
get = len - *have;
|
||||
if (get > max)
|
||||
get = max;
|
||||
ret = read(state->fd, buf + *have, get);
|
||||
if (ret <= 0)
|
||||
break;
|
||||
*have += (unsigned)ret;
|
||||
} while (*have < len);
|
||||
if (ret < 0) {
|
||||
gz_error(state, Z_ERRNO, zstrerror());
|
||||
return -1;
|
||||
}
|
||||
if (ret == 0)
|
||||
state->eof = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Load up input buffer and set eof flag if last data loaded -- return -1 on
|
||||
error, 0 otherwise. Note that the eof flag is set when the end of the input
|
||||
file is reached, even though there may be unused data in the buffer. Once
|
||||
that data has been used, no more attempts will be made to read the file.
|
||||
If strm->avail_in != 0, then the current data is moved to the beginning of
|
||||
the input buffer, and then the remainder of the buffer is loaded with the
|
||||
available data from the input file. */
|
||||
local int gz_avail(state)
|
||||
gz_statep state;
|
||||
{
|
||||
unsigned got;
|
||||
z_streamp strm = &(state->strm);
|
||||
|
||||
if (state->err != Z_OK && state->err != Z_BUF_ERROR)
|
||||
return -1;
|
||||
if (state->eof == 0) {
|
||||
if (strm->avail_in) { /* copy what's there to the start */
|
||||
unsigned char *p = state->in;
|
||||
unsigned const char *q = strm->next_in;
|
||||
unsigned n = strm->avail_in;
|
||||
do {
|
||||
*p++ = *q++;
|
||||
} while (--n);
|
||||
}
|
||||
if (gz_load(state, state->in + strm->avail_in,
|
||||
state->size - strm->avail_in, &got) == -1)
|
||||
return -1;
|
||||
strm->avail_in += got;
|
||||
strm->next_in = state->in;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Look for gzip header, set up for inflate or copy. state->x.have must be 0.
|
||||
If this is the first time in, allocate required memory. state->how will be
|
||||
left unchanged if there is no more input data available, will be set to COPY
|
||||
if there is no gzip header and direct copying will be performed, or it will
|
||||
be set to GZIP for decompression. If direct copying, then leftover input
|
||||
data from the input buffer will be copied to the output buffer. In that
|
||||
case, all further file reads will be directly to either the output buffer or
|
||||
a user buffer. If decompressing, the inflate state will be initialized.
|
||||
gz_look() will return 0 on success or -1 on failure. */
|
||||
local int gz_look(state)
|
||||
gz_statep state;
|
||||
{
|
||||
z_streamp strm = &(state->strm);
|
||||
|
||||
/* allocate read buffers and inflate memory */
|
||||
if (state->size == 0) {
|
||||
/* allocate buffers */
|
||||
state->in = (unsigned char *)malloc(state->want);
|
||||
state->out = (unsigned char *)malloc(state->want << 1);
|
||||
if (state->in == NULL || state->out == NULL) {
|
||||
free(state->out);
|
||||
free(state->in);
|
||||
gz_error(state, Z_MEM_ERROR, "out of memory");
|
||||
return -1;
|
||||
}
|
||||
state->size = state->want;
|
||||
|
||||
/* allocate inflate memory */
|
||||
state->strm.zalloc = Z_NULL;
|
||||
state->strm.zfree = Z_NULL;
|
||||
state->strm.opaque = Z_NULL;
|
||||
state->strm.avail_in = 0;
|
||||
state->strm.next_in = Z_NULL;
|
||||
if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) { /* gunzip */
|
||||
free(state->out);
|
||||
free(state->in);
|
||||
state->size = 0;
|
||||
gz_error(state, Z_MEM_ERROR, "out of memory");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
/* get at least the magic bytes in the input buffer */
|
||||
if (strm->avail_in < 2) {
|
||||
if (gz_avail(state) == -1)
|
||||
return -1;
|
||||
if (strm->avail_in == 0)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* look for gzip magic bytes -- if there, do gzip decoding (note: there is
|
||||
a logical dilemma here when considering the case of a partially written
|
||||
gzip file, to wit, if a single 31 byte is written, then we cannot tell
|
||||
whether this is a single-byte file, or just a partially written gzip
|
||||
file -- for here we assume that if a gzip file is being written, then
|
||||
the header will be written in a single operation, so that reading a
|
||||
single byte is sufficient indication that it is not a gzip file) */
|
||||
if (strm->avail_in > 1 &&
|
||||
strm->next_in[0] == 31 && strm->next_in[1] == 139) {
|
||||
inflateReset(strm);
|
||||
state->how = GZIP;
|
||||
state->direct = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* no gzip header -- if we were decoding gzip before, then this is trailing
|
||||
garbage. Ignore the trailing garbage and finish. */
|
||||
if (state->direct == 0) {
|
||||
strm->avail_in = 0;
|
||||
state->eof = 1;
|
||||
state->x.have = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* doing raw i/o, copy any leftover input to output -- this assumes that
|
||||
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;
|
||||
}
|
||||
state->how = COPY;
|
||||
state->direct = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Decompress from input to the provided next_out and avail_out in the state.
|
||||
On return, state->x.have and state->x.next point to the just decompressed
|
||||
data. If the gzip stream completes, state->how is reset to LOOK to look for
|
||||
the next gzip stream or raw data, once state->x.have is depleted. Returns 0
|
||||
on success, -1 on failure. */
|
||||
local int gz_decomp(state)
|
||||
gz_statep state;
|
||||
{
|
||||
int ret = Z_OK;
|
||||
unsigned had;
|
||||
z_streamp strm = &(state->strm);
|
||||
|
||||
/* fill output buffer up to end of deflate stream */
|
||||
had = strm->avail_out;
|
||||
do {
|
||||
/* get more input for inflate() */
|
||||
if (strm->avail_in == 0 && gz_avail(state) == -1)
|
||||
return -1;
|
||||
if (strm->avail_in == 0) {
|
||||
gz_error(state, Z_BUF_ERROR, "unexpected end of file");
|
||||
break;
|
||||
}
|
||||
|
||||
/* decompress and handle errors */
|
||||
ret = inflate(strm, Z_NO_FLUSH);
|
||||
if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {
|
||||
gz_error(state, Z_STREAM_ERROR,
|
||||
"internal error: inflate stream corrupt");
|
||||
return -1;
|
||||
}
|
||||
if (ret == Z_MEM_ERROR) {
|
||||
gz_error(state, Z_MEM_ERROR, "out of memory");
|
||||
return -1;
|
||||
}
|
||||
if (ret == Z_DATA_ERROR) { /* deflate stream invalid */
|
||||
gz_error(state, Z_DATA_ERROR,
|
||||
strm->msg == NULL ? "compressed data error" : strm->msg);
|
||||
return -1;
|
||||
}
|
||||
} while (strm->avail_out && ret != Z_STREAM_END);
|
||||
|
||||
/* update available output */
|
||||
state->x.have = had - strm->avail_out;
|
||||
state->x.next = strm->next_out - state->x.have;
|
||||
|
||||
/* if the gzip stream completed successfully, look for another */
|
||||
if (ret == Z_STREAM_END)
|
||||
state->how = LOOK;
|
||||
|
||||
/* good decompression */
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Fetch data and put it in the output buffer. Assumes state->x.have is 0.
|
||||
Data is either copied from the input file or decompressed from the input
|
||||
file depending on state->how. If state->how is LOOK, then a gzip header is
|
||||
looked for to determine whether to copy or decompress. Returns -1 on error,
|
||||
otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the
|
||||
end of the input file has been reached and all data has been processed. */
|
||||
local int gz_fetch(state)
|
||||
gz_statep state;
|
||||
{
|
||||
z_streamp strm = &(state->strm);
|
||||
|
||||
do {
|
||||
switch(state->how) {
|
||||
case LOOK: /* -> LOOK, COPY (only if never GZIP), or GZIP */
|
||||
if (gz_look(state) == -1)
|
||||
return -1;
|
||||
if (state->how == LOOK)
|
||||
return 0;
|
||||
break;
|
||||
case COPY: /* -> COPY */
|
||||
if (gz_load(state, state->out, state->size << 1, &(state->x.have))
|
||||
== -1)
|
||||
return -1;
|
||||
state->x.next = state->out;
|
||||
return 0;
|
||||
case GZIP: /* -> GZIP or LOOK (if end of gzip stream) */
|
||||
strm->avail_out = state->size << 1;
|
||||
strm->next_out = state->out;
|
||||
if (gz_decomp(state) == -1)
|
||||
return -1;
|
||||
}
|
||||
} while (state->x.have == 0 && (!state->eof || strm->avail_in));
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */
|
||||
local int gz_skip(state, len)
|
||||
gz_statep state;
|
||||
z_off64_t len;
|
||||
{
|
||||
unsigned n;
|
||||
|
||||
/* skip over len bytes or reach end-of-file, whichever comes first */
|
||||
while (len)
|
||||
/* skip over whatever is in output buffer */
|
||||
if (state->x.have) {
|
||||
n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ?
|
||||
(unsigned)len : state->x.have;
|
||||
state->x.have -= n;
|
||||
state->x.next += n;
|
||||
state->x.pos += n;
|
||||
len -= n;
|
||||
}
|
||||
|
||||
/* output buffer empty -- return if we're at the end of the input */
|
||||
else if (state->eof && state->strm.avail_in == 0)
|
||||
break;
|
||||
|
||||
/* need more data to skip -- load up output buffer */
|
||||
else {
|
||||
/* get more output, looking for header if required */
|
||||
if (gz_fetch(state) == -1)
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Read len bytes into buf from file, or less than len up to the end of the
|
||||
input. Return the number of bytes read. If zero is returned, either the
|
||||
end of file was reached, or there was an error. state->err must be
|
||||
consulted in that case to determine which. */
|
||||
local z_size_t gz_read(state, buf, len)
|
||||
gz_statep state;
|
||||
voidp buf;
|
||||
z_size_t len;
|
||||
{
|
||||
z_size_t got;
|
||||
unsigned n;
|
||||
|
||||
/* if len is zero, avoid unnecessary operations */
|
||||
if (len == 0)
|
||||
return 0;
|
||||
|
||||
/* process a skip request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_skip(state, state->skip) == -1)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* get len bytes to buf, or less than len if at the end */
|
||||
got = 0;
|
||||
do {
|
||||
/* set n to the maximum amount of len that fits in an unsigned int */
|
||||
n = -1;
|
||||
if (n > len)
|
||||
n = len;
|
||||
|
||||
/* first just try copying data from the output buffer */
|
||||
if (state->x.have) {
|
||||
if (state->x.have < n)
|
||||
n = state->x.have;
|
||||
memcpy(buf, state->x.next, n);
|
||||
state->x.next += n;
|
||||
state->x.have -= n;
|
||||
}
|
||||
|
||||
/* output buffer empty -- return if we're at the end of the input */
|
||||
else if (state->eof && state->strm.avail_in == 0) {
|
||||
state->past = 1; /* tried to read past end */
|
||||
break;
|
||||
}
|
||||
|
||||
/* need output data -- for small len or new stream load up our output
|
||||
buffer */
|
||||
else if (state->how == LOOK || n < (state->size << 1)) {
|
||||
/* get more output, looking for header if required */
|
||||
if (gz_fetch(state) == -1)
|
||||
return 0;
|
||||
continue; /* no progress yet -- go back to copy above */
|
||||
/* the copy above assures that we will leave with space in the
|
||||
output buffer, allowing at least one gzungetc() to succeed */
|
||||
}
|
||||
|
||||
/* large len -- read directly into user buffer */
|
||||
else if (state->how == COPY) { /* read directly */
|
||||
if (gz_load(state, (unsigned char *)buf, n, &n) == -1)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* large len -- decompress directly into user buffer */
|
||||
else { /* state->how == GZIP */
|
||||
state->strm.avail_out = n;
|
||||
state->strm.next_out = (unsigned char *)buf;
|
||||
if (gz_decomp(state) == -1)
|
||||
return 0;
|
||||
n = state->x.have;
|
||||
state->x.have = 0;
|
||||
}
|
||||
|
||||
/* update progress */
|
||||
len -= n;
|
||||
buf = (char *)buf + n;
|
||||
got += n;
|
||||
state->x.pos += n;
|
||||
} while (len);
|
||||
|
||||
/* return number of bytes read into user buffer */
|
||||
return got;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzread(file, buf, len)
|
||||
gzFile file;
|
||||
voidp buf;
|
||||
unsigned len;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're reading and that there's no (serious) error */
|
||||
if (state->mode != GZ_READ ||
|
||||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
|
||||
return -1;
|
||||
|
||||
/* since an int is returned, make sure len fits in one, otherwise return
|
||||
with an error (this avoids a flaw in the interface) */
|
||||
if ((int)len < 0) {
|
||||
gz_error(state, Z_STREAM_ERROR, "request does not fit in an int");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* read len or fewer bytes to buf */
|
||||
len = gz_read(state, buf, len);
|
||||
|
||||
/* check for an error */
|
||||
if (len == 0 && state->err != Z_OK && state->err != Z_BUF_ERROR)
|
||||
return -1;
|
||||
|
||||
/* return the number of bytes read (this is assured to fit in an int) */
|
||||
return (int)len;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_size_t ZEXPORT gzfread(buf, size, nitems, file)
|
||||
voidp buf;
|
||||
z_size_t size;
|
||||
z_size_t nitems;
|
||||
gzFile file;
|
||||
{
|
||||
z_size_t len;
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return 0;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're reading and that there's no (serious) error */
|
||||
if (state->mode != GZ_READ ||
|
||||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
|
||||
return 0;
|
||||
|
||||
/* compute bytes to read -- error on overflow */
|
||||
len = nitems * size;
|
||||
if (size && len / size != nitems) {
|
||||
gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* read len or fewer bytes to buf, return the number of full items read */
|
||||
return len ? gz_read(state, buf, len) / size : 0;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
#ifdef Z_PREFIX_SET
|
||||
# undef z_gzgetc
|
||||
#else
|
||||
# undef gzgetc
|
||||
#endif
|
||||
int ZEXPORT gzgetc(file)
|
||||
gzFile file;
|
||||
{
|
||||
int ret;
|
||||
unsigned char buf[1];
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're reading and that there's no (serious) error */
|
||||
if (state->mode != GZ_READ ||
|
||||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
|
||||
return -1;
|
||||
|
||||
/* try output buffer (no need to check for skip request) */
|
||||
if (state->x.have) {
|
||||
state->x.have--;
|
||||
state->x.pos++;
|
||||
return *(state->x.next)++;
|
||||
}
|
||||
|
||||
/* nothing there -- try gz_read() */
|
||||
ret = gz_read(state, buf, 1);
|
||||
return ret < 1 ? -1 : buf[0];
|
||||
}
|
||||
|
||||
int ZEXPORT gzgetc_(file)
|
||||
gzFile file;
|
||||
{
|
||||
return gzgetc(file);
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzungetc(c, file)
|
||||
int c;
|
||||
gzFile file;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're reading and that there's no (serious) error */
|
||||
if (state->mode != GZ_READ ||
|
||||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
|
||||
return -1;
|
||||
|
||||
/* process a skip request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_skip(state, state->skip) == -1)
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* can't push EOF */
|
||||
if (c < 0)
|
||||
return -1;
|
||||
|
||||
/* if output buffer empty, put byte at end (allows more pushing) */
|
||||
if (state->x.have == 0) {
|
||||
state->x.have = 1;
|
||||
state->x.next = state->out + (state->size << 1) - 1;
|
||||
state->x.next[0] = (unsigned char)c;
|
||||
state->x.pos--;
|
||||
state->past = 0;
|
||||
return c;
|
||||
}
|
||||
|
||||
/* if no room, give up (must have already done a gzungetc()) */
|
||||
if (state->x.have == (state->size << 1)) {
|
||||
gz_error(state, Z_DATA_ERROR, "out of room to push characters");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* slide output data if needed and insert byte before existing data */
|
||||
if (state->x.next == state->out) {
|
||||
unsigned char *src = state->out + state->x.have;
|
||||
unsigned char *dest = state->out + (state->size << 1);
|
||||
while (src > state->out)
|
||||
*--dest = *--src;
|
||||
state->x.next = dest;
|
||||
}
|
||||
state->x.have++;
|
||||
state->x.next--;
|
||||
state->x.next[0] = (unsigned char)c;
|
||||
state->x.pos--;
|
||||
state->past = 0;
|
||||
return c;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
char * ZEXPORT gzgets(file, buf, len)
|
||||
gzFile file;
|
||||
char *buf;
|
||||
int len;
|
||||
{
|
||||
unsigned left, n;
|
||||
char *str;
|
||||
unsigned char *eol;
|
||||
gz_statep state;
|
||||
|
||||
/* check parameters and get internal structure */
|
||||
if (file == NULL || buf == NULL || len < 1)
|
||||
return NULL;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're reading and that there's no (serious) error */
|
||||
if (state->mode != GZ_READ ||
|
||||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
|
||||
return NULL;
|
||||
|
||||
/* process a skip request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_skip(state, state->skip) == -1)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* copy output bytes up to new line or len - 1, whichever comes first --
|
||||
append a terminating zero to the string (we don't check for a zero in
|
||||
the contents, let the user worry about that) */
|
||||
str = buf;
|
||||
left = (unsigned)len - 1;
|
||||
if (left) do {
|
||||
/* assure that something is in the output buffer */
|
||||
if (state->x.have == 0 && gz_fetch(state) == -1)
|
||||
return NULL; /* error */
|
||||
if (state->x.have == 0) { /* end of file */
|
||||
state->past = 1; /* read past end */
|
||||
break; /* return what we have */
|
||||
}
|
||||
|
||||
/* look for end-of-line in current output buffer */
|
||||
n = state->x.have > left ? left : state->x.have;
|
||||
eol = (unsigned char *)memchr(state->x.next, '\n', n);
|
||||
if (eol != NULL)
|
||||
n = (unsigned)(eol - state->x.next) + 1;
|
||||
|
||||
/* copy through end-of-line, or remainder if not found */
|
||||
memcpy(buf, state->x.next, n);
|
||||
state->x.have -= n;
|
||||
state->x.next += n;
|
||||
state->x.pos += n;
|
||||
left -= n;
|
||||
buf += n;
|
||||
} while (left && eol == NULL);
|
||||
|
||||
/* return terminated string, or if nothing, end of file */
|
||||
if (buf == str)
|
||||
return NULL;
|
||||
buf[0] = 0;
|
||||
return str;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzdirect(file)
|
||||
gzFile file;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return 0;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* if the state is not known, but we can find out, then do so (this is
|
||||
mainly for right after a gzopen() or gzdopen()) */
|
||||
if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
|
||||
(void)gz_look(state);
|
||||
|
||||
/* return 1 if transparent, 0 if processing a gzip stream */
|
||||
return state->direct;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzclose_r(file)
|
||||
gzFile file;
|
||||
{
|
||||
int ret, err;
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're reading */
|
||||
if (state->mode != GZ_READ)
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* free memory and close file */
|
||||
if (state->size) {
|
||||
inflateEnd(&(state->strm));
|
||||
free(state->out);
|
||||
free(state->in);
|
||||
}
|
||||
err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK;
|
||||
gz_error(state, Z_OK, NULL);
|
||||
free(state->path);
|
||||
ret = close(state->fd);
|
||||
free(state);
|
||||
return ret ? Z_ERRNO : err;
|
||||
}
|
||||
|
|
@ -0,0 +1,665 @@
|
|||
/* gzwrite.c -- zlib functions for writing gzip files
|
||||
* Copyright (C) 2004-2017 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "gzguts.h"
|
||||
|
||||
/* Local functions */
|
||||
local int gz_init OF((gz_statep));
|
||||
local int gz_comp OF((gz_statep, int));
|
||||
local int gz_zero OF((gz_statep, z_off64_t));
|
||||
local z_size_t gz_write OF((gz_statep, voidpc, z_size_t));
|
||||
|
||||
/* Initialize state for writing a gzip file. Mark initialization by setting
|
||||
state->size to non-zero. Return -1 on a memory allocation failure, or 0 on
|
||||
success. */
|
||||
local int gz_init(state)
|
||||
gz_statep state;
|
||||
{
|
||||
int ret;
|
||||
z_streamp strm = &(state->strm);
|
||||
|
||||
/* allocate input buffer (double size for gzprintf) */
|
||||
state->in = (unsigned char *)malloc(state->want << 1);
|
||||
if (state->in == NULL) {
|
||||
gz_error(state, Z_MEM_ERROR, "out of memory");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* only need output buffer and deflate state if compressing */
|
||||
if (!state->direct) {
|
||||
/* allocate output buffer */
|
||||
state->out = (unsigned char *)malloc(state->want);
|
||||
if (state->out == NULL) {
|
||||
free(state->in);
|
||||
gz_error(state, Z_MEM_ERROR, "out of memory");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* allocate deflate memory, set up for gzip compression */
|
||||
strm->zalloc = Z_NULL;
|
||||
strm->zfree = Z_NULL;
|
||||
strm->opaque = Z_NULL;
|
||||
ret = deflateInit2(strm, state->level, Z_DEFLATED,
|
||||
MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy);
|
||||
if (ret != Z_OK) {
|
||||
free(state->out);
|
||||
free(state->in);
|
||||
gz_error(state, Z_MEM_ERROR, "out of memory");
|
||||
return -1;
|
||||
}
|
||||
strm->next_in = NULL;
|
||||
}
|
||||
|
||||
/* mark state as initialized */
|
||||
state->size = state->want;
|
||||
|
||||
/* initialize write buffer if compressing */
|
||||
if (!state->direct) {
|
||||
strm->avail_out = state->size;
|
||||
strm->next_out = state->out;
|
||||
state->x.next = strm->next_out;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Compress whatever is at avail_in and next_in and write to the output file.
|
||||
Return -1 if there is an error writing to the output file or if gz_init()
|
||||
fails to allocate memory, otherwise 0. flush is assumed to be a valid
|
||||
deflate() flush value. If flush is Z_FINISH, then the deflate() state is
|
||||
reset to start a new gzip stream. If gz->direct is true, then simply write
|
||||
to the output file without compressing, and ignore flush. */
|
||||
local int gz_comp(state, flush)
|
||||
gz_statep state;
|
||||
int flush;
|
||||
{
|
||||
int ret, writ;
|
||||
unsigned have, put, max = ((unsigned)-1 >> 2) + 1;
|
||||
z_streamp strm = &(state->strm);
|
||||
|
||||
/* allocate memory if this is the first time through */
|
||||
if (state->size == 0 && gz_init(state) == -1)
|
||||
return -1;
|
||||
|
||||
/* write directly if requested */
|
||||
if (state->direct) {
|
||||
while (strm->avail_in) {
|
||||
put = strm->avail_in > max ? max : strm->avail_in;
|
||||
writ = write(state->fd, strm->next_in, put);
|
||||
if (writ < 0) {
|
||||
gz_error(state, Z_ERRNO, zstrerror());
|
||||
return -1;
|
||||
}
|
||||
strm->avail_in -= (unsigned)writ;
|
||||
strm->next_in += writ;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* run deflate() on provided input until it produces no more output */
|
||||
ret = Z_OK;
|
||||
do {
|
||||
/* write out current buffer contents if full, or if flushing, but if
|
||||
doing Z_FINISH then don't write until we get to Z_STREAM_END */
|
||||
if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
|
||||
(flush != Z_FINISH || ret == Z_STREAM_END))) {
|
||||
while (strm->next_out > state->x.next) {
|
||||
put = strm->next_out - state->x.next > (int)max ? max :
|
||||
(unsigned)(strm->next_out - state->x.next);
|
||||
writ = write(state->fd, state->x.next, put);
|
||||
if (writ < 0) {
|
||||
gz_error(state, Z_ERRNO, zstrerror());
|
||||
return -1;
|
||||
}
|
||||
state->x.next += writ;
|
||||
}
|
||||
if (strm->avail_out == 0) {
|
||||
strm->avail_out = state->size;
|
||||
strm->next_out = state->out;
|
||||
state->x.next = state->out;
|
||||
}
|
||||
}
|
||||
|
||||
/* compress */
|
||||
have = strm->avail_out;
|
||||
ret = deflate(strm, flush);
|
||||
if (ret == Z_STREAM_ERROR) {
|
||||
gz_error(state, Z_STREAM_ERROR,
|
||||
"internal error: deflate stream corrupt");
|
||||
return -1;
|
||||
}
|
||||
have -= strm->avail_out;
|
||||
} while (have);
|
||||
|
||||
/* if that completed a deflate stream, allow another to start */
|
||||
if (flush == Z_FINISH)
|
||||
deflateReset(strm);
|
||||
|
||||
/* all done, no errors */
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Compress len zeros to output. Return -1 on a write error or memory
|
||||
allocation failure by gz_comp(), or 0 on success. */
|
||||
local int gz_zero(state, len)
|
||||
gz_statep state;
|
||||
z_off64_t len;
|
||||
{
|
||||
int first;
|
||||
unsigned n;
|
||||
z_streamp strm = &(state->strm);
|
||||
|
||||
/* consume whatever's left in the input buffer */
|
||||
if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
|
||||
return -1;
|
||||
|
||||
/* compress len zeros (len guaranteed > 0) */
|
||||
first = 1;
|
||||
while (len) {
|
||||
n = GT_OFF(state->size) || (z_off64_t)state->size > len ?
|
||||
(unsigned)len : state->size;
|
||||
if (first) {
|
||||
memset(state->in, 0, n);
|
||||
first = 0;
|
||||
}
|
||||
strm->avail_in = n;
|
||||
strm->next_in = state->in;
|
||||
state->x.pos += n;
|
||||
if (gz_comp(state, Z_NO_FLUSH) == -1)
|
||||
return -1;
|
||||
len -= n;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Write len bytes from buf to file. Return the number of bytes written. If
|
||||
the returned value is less than len, then there was an error. */
|
||||
local z_size_t gz_write(state, buf, len)
|
||||
gz_statep state;
|
||||
voidpc buf;
|
||||
z_size_t len;
|
||||
{
|
||||
z_size_t put = len;
|
||||
|
||||
/* if len is zero, avoid unnecessary operations */
|
||||
if (len == 0)
|
||||
return 0;
|
||||
|
||||
/* allocate memory if this is the first time through */
|
||||
if (state->size == 0 && gz_init(state) == -1)
|
||||
return 0;
|
||||
|
||||
/* check for seek request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_zero(state, state->skip) == -1)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* for small len, copy to input buffer, otherwise compress directly */
|
||||
if (len < state->size) {
|
||||
/* copy to input buffer, compress when full */
|
||||
do {
|
||||
unsigned have, copy;
|
||||
|
||||
if (state->strm.avail_in == 0)
|
||||
state->strm.next_in = state->in;
|
||||
have = (unsigned)((state->strm.next_in + state->strm.avail_in) -
|
||||
state->in);
|
||||
copy = state->size - have;
|
||||
if (copy > len)
|
||||
copy = len;
|
||||
memcpy(state->in + have, buf, copy);
|
||||
state->strm.avail_in += copy;
|
||||
state->x.pos += copy;
|
||||
buf = (const char *)buf + copy;
|
||||
len -= copy;
|
||||
if (len && gz_comp(state, Z_NO_FLUSH) == -1)
|
||||
return 0;
|
||||
} while (len);
|
||||
}
|
||||
else {
|
||||
/* consume whatever's left in the input buffer */
|
||||
if (state->strm.avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
|
||||
return 0;
|
||||
|
||||
/* directly compress user buffer to file */
|
||||
state->strm.next_in = (z_const Bytef *)buf;
|
||||
do {
|
||||
unsigned n = (unsigned)-1;
|
||||
if (n > len)
|
||||
n = len;
|
||||
state->strm.avail_in = n;
|
||||
state->x.pos += n;
|
||||
if (gz_comp(state, Z_NO_FLUSH) == -1)
|
||||
return 0;
|
||||
len -= n;
|
||||
} while (len);
|
||||
}
|
||||
|
||||
/* input was all buffered or compressed */
|
||||
return put;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzwrite(file, buf, len)
|
||||
gzFile file;
|
||||
voidpc buf;
|
||||
unsigned len;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return 0;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return 0;
|
||||
|
||||
/* since an int is returned, make sure len fits in one, otherwise return
|
||||
with an error (this avoids a flaw in the interface) */
|
||||
if ((int)len < 0) {
|
||||
gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* write len bytes from buf (the return value will fit in an int) */
|
||||
return (int)gz_write(state, buf, len);
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
z_size_t ZEXPORT gzfwrite(buf, size, nitems, file)
|
||||
voidpc buf;
|
||||
z_size_t size;
|
||||
z_size_t nitems;
|
||||
gzFile file;
|
||||
{
|
||||
z_size_t len;
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return 0;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return 0;
|
||||
|
||||
/* compute bytes to read -- error on overflow */
|
||||
len = nitems * size;
|
||||
if (size && len / size != nitems) {
|
||||
gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* write len bytes to buf, return the number of full items written */
|
||||
return len ? gz_write(state, buf, len) / size : 0;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzputc(file, c)
|
||||
gzFile file;
|
||||
int c;
|
||||
{
|
||||
unsigned have;
|
||||
unsigned char buf[1];
|
||||
gz_statep state;
|
||||
z_streamp strm;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
strm = &(state->strm);
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return -1;
|
||||
|
||||
/* check for seek request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_zero(state, state->skip) == -1)
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* try writing to input buffer for speed (state->size == 0 if buffer not
|
||||
initialized) */
|
||||
if (state->size) {
|
||||
if (strm->avail_in == 0)
|
||||
strm->next_in = state->in;
|
||||
have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
|
||||
if (have < state->size) {
|
||||
state->in[have] = (unsigned char)c;
|
||||
strm->avail_in++;
|
||||
state->x.pos++;
|
||||
return c & 0xff;
|
||||
}
|
||||
}
|
||||
|
||||
/* no room in buffer or not initialized, use gz_write() */
|
||||
buf[0] = (unsigned char)c;
|
||||
if (gz_write(state, buf, 1) != 1)
|
||||
return -1;
|
||||
return c & 0xff;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzputs(file, str)
|
||||
gzFile file;
|
||||
const char *str;
|
||||
{
|
||||
int ret;
|
||||
z_size_t len;
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return -1;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return -1;
|
||||
|
||||
/* write string */
|
||||
len = strlen(str);
|
||||
ret = gz_write(state, str, len);
|
||||
return ret == 0 && len != 0 ? -1 : ret;
|
||||
}
|
||||
|
||||
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
|
||||
#include <stdarg.h>
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
|
||||
{
|
||||
int len;
|
||||
unsigned left;
|
||||
char *next;
|
||||
gz_statep state;
|
||||
z_streamp strm;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (gz_statep)file;
|
||||
strm = &(state->strm);
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* make sure we have some buffer space */
|
||||
if (state->size == 0 && gz_init(state) == -1)
|
||||
return state->err;
|
||||
|
||||
/* check for seek request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_zero(state, state->skip) == -1)
|
||||
return state->err;
|
||||
}
|
||||
|
||||
/* do the printf() into the input buffer, put length in len -- the input
|
||||
buffer is double-sized just for this function, so there is guaranteed to
|
||||
be state->size bytes available after the current contents */
|
||||
if (strm->avail_in == 0)
|
||||
strm->next_in = state->in;
|
||||
next = (char *)(state->in + (strm->next_in - state->in) + strm->avail_in);
|
||||
next[state->size - 1] = 0;
|
||||
#ifdef NO_vsnprintf
|
||||
# ifdef HAS_vsprintf_void
|
||||
(void)vsprintf(next, format, va);
|
||||
for (len = 0; len < state->size; len++)
|
||||
if (next[len] == 0) break;
|
||||
# else
|
||||
len = vsprintf(next, format, va);
|
||||
# endif
|
||||
#else
|
||||
# ifdef HAS_vsnprintf_void
|
||||
(void)vsnprintf(next, state->size, format, va);
|
||||
len = strlen(next);
|
||||
# else
|
||||
len = vsnprintf(next, state->size, format, va);
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* check that printf() results fit in buffer */
|
||||
if (len == 0 || (unsigned)len >= state->size || next[state->size - 1] != 0)
|
||||
return 0;
|
||||
|
||||
/* update buffer and position, compress first half if past that */
|
||||
strm->avail_in += (unsigned)len;
|
||||
state->x.pos += len;
|
||||
if (strm->avail_in >= state->size) {
|
||||
left = strm->avail_in - state->size;
|
||||
strm->avail_in = state->size;
|
||||
if (gz_comp(state, Z_NO_FLUSH) == -1)
|
||||
return state->err;
|
||||
memcpy(state->in, state->in + state->size, left);
|
||||
strm->next_in = state->in;
|
||||
strm->avail_in = left;
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
|
||||
{
|
||||
va_list va;
|
||||
int ret;
|
||||
|
||||
va_start(va, format);
|
||||
ret = gzvprintf(file, format, va);
|
||||
va_end(va);
|
||||
return ret;
|
||||
}
|
||||
|
||||
#else /* !STDC && !Z_HAVE_STDARG_H */
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
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;
|
||||
int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
|
||||
a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
|
||||
{
|
||||
unsigned len, left;
|
||||
char *next;
|
||||
gz_statep state;
|
||||
z_streamp strm;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (gz_statep)file;
|
||||
strm = &(state->strm);
|
||||
|
||||
/* check that can really pass pointer in ints */
|
||||
if (sizeof(int) != sizeof(void *))
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* make sure we have some buffer space */
|
||||
if (state->size == 0 && gz_init(state) == -1)
|
||||
return state->error;
|
||||
|
||||
/* check for seek request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_zero(state, state->skip) == -1)
|
||||
return state->error;
|
||||
}
|
||||
|
||||
/* do the printf() into the input buffer, put length in len -- the input
|
||||
buffer is double-sized just for this function, so there is guaranteed to
|
||||
be state->size bytes available after the current contents */
|
||||
if (strm->avail_in == 0)
|
||||
strm->next_in = state->in;
|
||||
next = (char *)(strm->next_in + strm->avail_in);
|
||||
next[state->size - 1] = 0;
|
||||
#ifdef NO_snprintf
|
||||
# ifdef HAS_sprintf_void
|
||||
sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12,
|
||||
a13, a14, a15, a16, a17, a18, a19, a20);
|
||||
for (len = 0; len < size; len++)
|
||||
if (next[len] == 0)
|
||||
break;
|
||||
# else
|
||||
len = sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11,
|
||||
a12, a13, a14, a15, a16, a17, a18, a19, a20);
|
||||
# endif
|
||||
#else
|
||||
# ifdef HAS_snprintf_void
|
||||
snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8, a9,
|
||||
a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
|
||||
len = strlen(next);
|
||||
# else
|
||||
len = snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8,
|
||||
a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* check that printf() results fit in buffer */
|
||||
if (len == 0 || len >= state->size || next[state->size - 1] != 0)
|
||||
return 0;
|
||||
|
||||
/* update buffer and position, compress first half if past that */
|
||||
strm->avail_in += len;
|
||||
state->x.pos += len;
|
||||
if (strm->avail_in >= state->size) {
|
||||
left = strm->avail_in - state->size;
|
||||
strm->avail_in = state->size;
|
||||
if (gz_comp(state, Z_NO_FLUSH) == -1)
|
||||
return state->err;
|
||||
memcpy(state->in, state->in + state->size, left);
|
||||
strm->next_in = state->in;
|
||||
strm->avail_in = left;
|
||||
}
|
||||
return (int)len;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzflush(file, flush)
|
||||
gzFile file;
|
||||
int flush;
|
||||
{
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* check flush parameter */
|
||||
if (flush < 0 || flush > Z_FINISH)
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* check for seek request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_zero(state, state->skip) == -1)
|
||||
return state->err;
|
||||
}
|
||||
|
||||
/* compress remaining data with requested flush */
|
||||
(void)gz_comp(state, flush);
|
||||
return state->err;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzsetparams(file, level, strategy)
|
||||
gzFile file;
|
||||
int level;
|
||||
int strategy;
|
||||
{
|
||||
gz_statep state;
|
||||
z_streamp strm;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (gz_statep)file;
|
||||
strm = &(state->strm);
|
||||
|
||||
/* check that we're writing and that there's no error */
|
||||
if (state->mode != GZ_WRITE || state->err != Z_OK)
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* if no change is requested, then do nothing */
|
||||
if (level == state->level && strategy == state->strategy)
|
||||
return Z_OK;
|
||||
|
||||
/* check for seek request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_zero(state, state->skip) == -1)
|
||||
return state->err;
|
||||
}
|
||||
|
||||
/* change compression parameters for subsequent input */
|
||||
if (state->size) {
|
||||
/* flush previous input with previous parameters before changing */
|
||||
if (strm->avail_in && gz_comp(state, Z_BLOCK) == -1)
|
||||
return state->err;
|
||||
deflateParams(strm, level, strategy);
|
||||
}
|
||||
state->level = level;
|
||||
state->strategy = strategy;
|
||||
return Z_OK;
|
||||
}
|
||||
|
||||
/* -- see zlib.h -- */
|
||||
int ZEXPORT gzclose_w(file)
|
||||
gzFile file;
|
||||
{
|
||||
int ret = Z_OK;
|
||||
gz_statep state;
|
||||
|
||||
/* get internal structure */
|
||||
if (file == NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (gz_statep)file;
|
||||
|
||||
/* check that we're writing */
|
||||
if (state->mode != GZ_WRITE)
|
||||
return Z_STREAM_ERROR;
|
||||
|
||||
/* check for seek request */
|
||||
if (state->seek) {
|
||||
state->seek = 0;
|
||||
if (gz_zero(state, state->skip) == -1)
|
||||
ret = state->err;
|
||||
}
|
||||
|
||||
/* flush, free memory, and close file */
|
||||
if (gz_comp(state, Z_FINISH) == -1)
|
||||
ret = state->err;
|
||||
if (state->size) {
|
||||
if (!state->direct) {
|
||||
(void)deflateEnd(&(state->strm));
|
||||
free(state->out);
|
||||
}
|
||||
free(state->in);
|
||||
}
|
||||
gz_error(state, Z_OK, NULL);
|
||||
free(state->path);
|
||||
if (close(state->fd) == -1)
|
||||
ret = Z_ERRNO;
|
||||
free(state);
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -0,0 +1,640 @@
|
|||
/* infback.c -- inflate using a call-back interface
|
||||
* Copyright (C) 1995-2016 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/*
|
||||
This code is largely copied from inflate.c. Normally either infback.o or
|
||||
inflate.o would be linked into an application--not both. The interface
|
||||
with inffast.c is retained so that optimized assembler-coded versions of
|
||||
inflate_fast() can be used with either inflate.c or infback.c.
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "inftrees.h"
|
||||
#include "inflate.h"
|
||||
#include "inffast.h"
|
||||
|
||||
/* function prototypes */
|
||||
local void fixedtables OF((struct inflate_state FAR *state));
|
||||
|
||||
/*
|
||||
strm provides memory allocation functions in zalloc and zfree, or
|
||||
Z_NULL to use the library memory allocation functions.
|
||||
|
||||
windowBits is in the range 8..15, and window is a user-supplied
|
||||
window and output buffer that is 2**windowBits bytes.
|
||||
*/
|
||||
int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)
|
||||
z_streamp strm;
|
||||
int windowBits;
|
||||
unsigned char FAR *window;
|
||||
const char *version;
|
||||
int stream_size;
|
||||
{
|
||||
struct inflate_state FAR *state;
|
||||
|
||||
if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
|
||||
stream_size != (int)(sizeof(z_stream)))
|
||||
return Z_VERSION_ERROR;
|
||||
if (strm == Z_NULL || window == Z_NULL ||
|
||||
windowBits < 8 || windowBits > 15)
|
||||
return Z_STREAM_ERROR;
|
||||
strm->msg = Z_NULL; /* in case we return an error */
|
||||
if (strm->zalloc == (alloc_func)0) {
|
||||
#ifdef Z_SOLO
|
||||
return Z_STREAM_ERROR;
|
||||
#else
|
||||
strm->zalloc = zcalloc;
|
||||
strm->opaque = (voidpf)0;
|
||||
#endif
|
||||
}
|
||||
if (strm->zfree == (free_func)0)
|
||||
#ifdef Z_SOLO
|
||||
return Z_STREAM_ERROR;
|
||||
#else
|
||||
strm->zfree = zcfree;
|
||||
#endif
|
||||
state = (struct inflate_state FAR *)ZALLOC(strm, 1,
|
||||
sizeof(struct inflate_state));
|
||||
if (state == Z_NULL) return Z_MEM_ERROR;
|
||||
Tracev((stderr, "inflate: allocated\n"));
|
||||
strm->state = (struct internal_state FAR *)state;
|
||||
state->dmax = 32768U;
|
||||
state->wbits = (uInt)windowBits;
|
||||
state->wsize = 1U << windowBits;
|
||||
state->window = window;
|
||||
state->wnext = 0;
|
||||
state->whave = 0;
|
||||
return Z_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
Return state with length and distance decoding tables and index sizes set to
|
||||
fixed code decoding. Normally this returns fixed tables from inffixed.h.
|
||||
If BUILDFIXED is defined, then instead this routine builds the tables the
|
||||
first time it's called, and returns those tables the first time and
|
||||
thereafter. This reduces the size of the code by about 2K bytes, in
|
||||
exchange for a little execution time. However, BUILDFIXED should not be
|
||||
used for threaded applications, since the rewriting of the tables and virgin
|
||||
may not be thread-safe.
|
||||
*/
|
||||
local void fixedtables(state)
|
||||
struct inflate_state FAR *state;
|
||||
{
|
||||
#ifdef BUILDFIXED
|
||||
static int virgin = 1;
|
||||
static code *lenfix, *distfix;
|
||||
static code fixed[544];
|
||||
|
||||
/* build fixed huffman tables if first call (may not be thread safe) */
|
||||
if (virgin) {
|
||||
unsigned sym, bits;
|
||||
static code *next;
|
||||
|
||||
/* literal/length table */
|
||||
sym = 0;
|
||||
while (sym < 144) state->lens[sym++] = 8;
|
||||
while (sym < 256) state->lens[sym++] = 9;
|
||||
while (sym < 280) state->lens[sym++] = 7;
|
||||
while (sym < 288) state->lens[sym++] = 8;
|
||||
next = fixed;
|
||||
lenfix = next;
|
||||
bits = 9;
|
||||
inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
|
||||
|
||||
/* distance table */
|
||||
sym = 0;
|
||||
while (sym < 32) state->lens[sym++] = 5;
|
||||
distfix = next;
|
||||
bits = 5;
|
||||
inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
|
||||
|
||||
/* do this just once */
|
||||
virgin = 0;
|
||||
}
|
||||
#else /* !BUILDFIXED */
|
||||
# include "inffixed.h"
|
||||
#endif /* BUILDFIXED */
|
||||
state->lencode = lenfix;
|
||||
state->lenbits = 9;
|
||||
state->distcode = distfix;
|
||||
state->distbits = 5;
|
||||
}
|
||||
|
||||
/* Macros for inflateBack(): */
|
||||
|
||||
/* Load returned state from inflate_fast() */
|
||||
#define LOAD() \
|
||||
do { \
|
||||
put = strm->next_out; \
|
||||
left = strm->avail_out; \
|
||||
next = strm->next_in; \
|
||||
have = strm->avail_in; \
|
||||
hold = state->hold; \
|
||||
bits = state->bits; \
|
||||
} while (0)
|
||||
|
||||
/* Set state from registers for inflate_fast() */
|
||||
#define RESTORE() \
|
||||
do { \
|
||||
strm->next_out = put; \
|
||||
strm->avail_out = left; \
|
||||
strm->next_in = next; \
|
||||
strm->avail_in = have; \
|
||||
state->hold = hold; \
|
||||
state->bits = bits; \
|
||||
} while (0)
|
||||
|
||||
/* Clear the input bit accumulator */
|
||||
#define INITBITS() \
|
||||
do { \
|
||||
hold = 0; \
|
||||
bits = 0; \
|
||||
} while (0)
|
||||
|
||||
/* Assure that some input is available. If input is requested, but denied,
|
||||
then return a Z_BUF_ERROR from inflateBack(). */
|
||||
#define PULL() \
|
||||
do { \
|
||||
if (have == 0) { \
|
||||
have = in(in_desc, &next); \
|
||||
if (have == 0) { \
|
||||
next = Z_NULL; \
|
||||
ret = Z_BUF_ERROR; \
|
||||
goto inf_leave; \
|
||||
} \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
/* Get a byte of input into the bit accumulator, or return from inflateBack()
|
||||
with an error if there is no input available. */
|
||||
#define PULLBYTE() \
|
||||
do { \
|
||||
PULL(); \
|
||||
have--; \
|
||||
hold += (unsigned long)(*next++) << bits; \
|
||||
bits += 8; \
|
||||
} while (0)
|
||||
|
||||
/* Assure that there are at least n bits in the bit accumulator. If there is
|
||||
not enough available input to do that, then return from inflateBack() with
|
||||
an error. */
|
||||
#define NEEDBITS(n) \
|
||||
do { \
|
||||
while (bits < (unsigned)(n)) \
|
||||
PULLBYTE(); \
|
||||
} while (0)
|
||||
|
||||
/* Return the low n bits of the bit accumulator (n < 16) */
|
||||
#define BITS(n) \
|
||||
((unsigned)hold & ((1U << (n)) - 1))
|
||||
|
||||
/* Remove n bits from the bit accumulator */
|
||||
#define DROPBITS(n) \
|
||||
do { \
|
||||
hold >>= (n); \
|
||||
bits -= (unsigned)(n); \
|
||||
} while (0)
|
||||
|
||||
/* Remove zero to seven bits as needed to go to a byte boundary */
|
||||
#define BYTEBITS() \
|
||||
do { \
|
||||
hold >>= bits & 7; \
|
||||
bits -= bits & 7; \
|
||||
} while (0)
|
||||
|
||||
/* Assure that some output space is available, by writing out the window
|
||||
if it's full. If the write fails, return from inflateBack() with a
|
||||
Z_BUF_ERROR. */
|
||||
#define ROOM() \
|
||||
do { \
|
||||
if (left == 0) { \
|
||||
put = state->window; \
|
||||
left = state->wsize; \
|
||||
state->whave = left; \
|
||||
if (out(out_desc, put, left)) { \
|
||||
ret = Z_BUF_ERROR; \
|
||||
goto inf_leave; \
|
||||
} \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
/*
|
||||
strm provides the memory allocation functions and window buffer on input,
|
||||
and provides information on the unused input on return. For Z_DATA_ERROR
|
||||
returns, strm will also provide an error message.
|
||||
|
||||
in() and out() are the call-back input and output functions. When
|
||||
inflateBack() needs more input, it calls in(). When inflateBack() has
|
||||
filled the window with output, or when it completes with data in the
|
||||
window, it calls out() to write out the data. The application must not
|
||||
change the provided input until in() is called again or inflateBack()
|
||||
returns. The application must not change the window/output buffer until
|
||||
inflateBack() returns.
|
||||
|
||||
in() and out() are called with a descriptor parameter provided in the
|
||||
inflateBack() call. This parameter can be a structure that provides the
|
||||
information required to do the read or write, as well as accumulated
|
||||
information on the input and output such as totals and check values.
|
||||
|
||||
in() should return zero on failure. out() should return non-zero on
|
||||
failure. If either in() or out() fails, than inflateBack() returns a
|
||||
Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
|
||||
was in() or out() that caused in the error. Otherwise, inflateBack()
|
||||
returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
|
||||
error, or Z_MEM_ERROR if it could not allocate memory for the state.
|
||||
inflateBack() can also return Z_STREAM_ERROR if the input parameters
|
||||
are not correct, i.e. strm is Z_NULL or the state was not initialized.
|
||||
*/
|
||||
int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)
|
||||
z_streamp strm;
|
||||
in_func in;
|
||||
void FAR *in_desc;
|
||||
out_func out;
|
||||
void FAR *out_desc;
|
||||
{
|
||||
struct inflate_state FAR *state;
|
||||
z_const unsigned char FAR *next; /* next input */
|
||||
unsigned char FAR *put; /* next output */
|
||||
unsigned have, left; /* available input and output */
|
||||
unsigned long hold; /* bit buffer */
|
||||
unsigned bits; /* bits in bit buffer */
|
||||
unsigned copy; /* number of stored or match bytes to copy */
|
||||
unsigned char FAR *from; /* where to copy match bytes from */
|
||||
code here; /* current decoding table entry */
|
||||
code last; /* parent table entry */
|
||||
unsigned len; /* length to copy for repeats, bits to drop */
|
||||
int ret; /* return code */
|
||||
static const unsigned short order[19] = /* permutation of code lengths */
|
||||
{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
|
||||
|
||||
/* Check that the strm exists and that the state was initialized */
|
||||
if (strm == Z_NULL || strm->state == Z_NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (struct inflate_state FAR *)strm->state;
|
||||
|
||||
/* Reset the state */
|
||||
strm->msg = Z_NULL;
|
||||
state->mode = TYPE;
|
||||
state->last = 0;
|
||||
state->whave = 0;
|
||||
next = strm->next_in;
|
||||
have = next != Z_NULL ? strm->avail_in : 0;
|
||||
hold = 0;
|
||||
bits = 0;
|
||||
put = state->window;
|
||||
left = state->wsize;
|
||||
|
||||
/* Inflate until end of block marked as last */
|
||||
for (;;)
|
||||
switch (state->mode) {
|
||||
case TYPE:
|
||||
/* determine and dispatch block type */
|
||||
if (state->last) {
|
||||
BYTEBITS();
|
||||
state->mode = DONE;
|
||||
break;
|
||||
}
|
||||
NEEDBITS(3);
|
||||
state->last = BITS(1);
|
||||
DROPBITS(1);
|
||||
switch (BITS(2)) {
|
||||
case 0: /* stored block */
|
||||
Tracev((stderr, "inflate: stored block%s\n",
|
||||
state->last ? " (last)" : ""));
|
||||
state->mode = STORED;
|
||||
break;
|
||||
case 1: /* fixed block */
|
||||
fixedtables(state);
|
||||
Tracev((stderr, "inflate: fixed codes block%s\n",
|
||||
state->last ? " (last)" : ""));
|
||||
state->mode = LEN; /* decode codes */
|
||||
break;
|
||||
case 2: /* dynamic block */
|
||||
Tracev((stderr, "inflate: dynamic codes block%s\n",
|
||||
state->last ? " (last)" : ""));
|
||||
state->mode = TABLE;
|
||||
break;
|
||||
case 3:
|
||||
strm->msg = (char *)"invalid block type";
|
||||
state->mode = BAD;
|
||||
}
|
||||
DROPBITS(2);
|
||||
break;
|
||||
|
||||
case STORED:
|
||||
/* get and verify stored block length */
|
||||
BYTEBITS(); /* go to byte boundary */
|
||||
NEEDBITS(32);
|
||||
if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
|
||||
strm->msg = (char *)"invalid stored block lengths";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
state->length = (unsigned)hold & 0xffff;
|
||||
Tracev((stderr, "inflate: stored length %u\n",
|
||||
state->length));
|
||||
INITBITS();
|
||||
|
||||
/* copy stored block from input to output */
|
||||
while (state->length != 0) {
|
||||
copy = state->length;
|
||||
PULL();
|
||||
ROOM();
|
||||
if (copy > have) copy = have;
|
||||
if (copy > left) copy = left;
|
||||
zmemcpy(put, next, copy);
|
||||
have -= copy;
|
||||
next += copy;
|
||||
left -= copy;
|
||||
put += copy;
|
||||
state->length -= copy;
|
||||
}
|
||||
Tracev((stderr, "inflate: stored end\n"));
|
||||
state->mode = TYPE;
|
||||
break;
|
||||
|
||||
case TABLE:
|
||||
/* get dynamic table entries descriptor */
|
||||
NEEDBITS(14);
|
||||
state->nlen = BITS(5) + 257;
|
||||
DROPBITS(5);
|
||||
state->ndist = BITS(5) + 1;
|
||||
DROPBITS(5);
|
||||
state->ncode = BITS(4) + 4;
|
||||
DROPBITS(4);
|
||||
#ifndef PKZIP_BUG_WORKAROUND
|
||||
if (state->nlen > 286 || state->ndist > 30) {
|
||||
strm->msg = (char *)"too many length or distance symbols";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
Tracev((stderr, "inflate: table sizes ok\n"));
|
||||
|
||||
/* get code length code lengths (not a typo) */
|
||||
state->have = 0;
|
||||
while (state->have < state->ncode) {
|
||||
NEEDBITS(3);
|
||||
state->lens[order[state->have++]] = (unsigned short)BITS(3);
|
||||
DROPBITS(3);
|
||||
}
|
||||
while (state->have < 19)
|
||||
state->lens[order[state->have++]] = 0;
|
||||
state->next = state->codes;
|
||||
state->lencode = (code const FAR *)(state->next);
|
||||
state->lenbits = 7;
|
||||
ret = inflate_table(CODES, state->lens, 19, &(state->next),
|
||||
&(state->lenbits), state->work);
|
||||
if (ret) {
|
||||
strm->msg = (char *)"invalid code lengths set";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
Tracev((stderr, "inflate: code lengths ok\n"));
|
||||
|
||||
/* get length and distance code code lengths */
|
||||
state->have = 0;
|
||||
while (state->have < state->nlen + state->ndist) {
|
||||
for (;;) {
|
||||
here = state->lencode[BITS(state->lenbits)];
|
||||
if ((unsigned)(here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
if (here.val < 16) {
|
||||
DROPBITS(here.bits);
|
||||
state->lens[state->have++] = here.val;
|
||||
}
|
||||
else {
|
||||
if (here.val == 16) {
|
||||
NEEDBITS(here.bits + 2);
|
||||
DROPBITS(here.bits);
|
||||
if (state->have == 0) {
|
||||
strm->msg = (char *)"invalid bit length repeat";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
len = (unsigned)(state->lens[state->have - 1]);
|
||||
copy = 3 + BITS(2);
|
||||
DROPBITS(2);
|
||||
}
|
||||
else if (here.val == 17) {
|
||||
NEEDBITS(here.bits + 3);
|
||||
DROPBITS(here.bits);
|
||||
len = 0;
|
||||
copy = 3 + BITS(3);
|
||||
DROPBITS(3);
|
||||
}
|
||||
else {
|
||||
NEEDBITS(here.bits + 7);
|
||||
DROPBITS(here.bits);
|
||||
len = 0;
|
||||
copy = 11 + BITS(7);
|
||||
DROPBITS(7);
|
||||
}
|
||||
if (state->have + copy > state->nlen + state->ndist) {
|
||||
strm->msg = (char *)"invalid bit length repeat";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
while (copy--)
|
||||
state->lens[state->have++] = (unsigned short)len;
|
||||
}
|
||||
}
|
||||
|
||||
/* handle error breaks in while */
|
||||
if (state->mode == BAD) break;
|
||||
|
||||
/* check for end-of-block code (better have one) */
|
||||
if (state->lens[256] == 0) {
|
||||
strm->msg = (char *)"invalid code -- missing end-of-block";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
|
||||
/* build code tables -- note: do not change the lenbits or distbits
|
||||
values here (9 and 6) without reading the comments in inftrees.h
|
||||
concerning the ENOUGH constants, which depend on those values */
|
||||
state->next = state->codes;
|
||||
state->lencode = (code const FAR *)(state->next);
|
||||
state->lenbits = 9;
|
||||
ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
|
||||
&(state->lenbits), state->work);
|
||||
if (ret) {
|
||||
strm->msg = (char *)"invalid literal/lengths set";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
state->distcode = (code const FAR *)(state->next);
|
||||
state->distbits = 6;
|
||||
ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
|
||||
&(state->next), &(state->distbits), state->work);
|
||||
if (ret) {
|
||||
strm->msg = (char *)"invalid distances set";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
Tracev((stderr, "inflate: codes ok\n"));
|
||||
state->mode = LEN;
|
||||
|
||||
case LEN:
|
||||
/* use inflate_fast() if we have enough input and output */
|
||||
if (have >= 6 && left >= 258) {
|
||||
RESTORE();
|
||||
if (state->whave < state->wsize)
|
||||
state->whave = state->wsize - left;
|
||||
inflate_fast(strm, state->wsize);
|
||||
LOAD();
|
||||
break;
|
||||
}
|
||||
|
||||
/* get a literal, length, or end-of-block code */
|
||||
for (;;) {
|
||||
here = state->lencode[BITS(state->lenbits)];
|
||||
if ((unsigned)(here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
if (here.op && (here.op & 0xf0) == 0) {
|
||||
last = here;
|
||||
for (;;) {
|
||||
here = state->lencode[last.val +
|
||||
(BITS(last.bits + last.op) >> last.bits)];
|
||||
if ((unsigned)(last.bits + here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
DROPBITS(last.bits);
|
||||
}
|
||||
DROPBITS(here.bits);
|
||||
state->length = (unsigned)here.val;
|
||||
|
||||
/* process literal */
|
||||
if (here.op == 0) {
|
||||
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
|
||||
"inflate: literal '%c'\n" :
|
||||
"inflate: literal 0x%02x\n", here.val));
|
||||
ROOM();
|
||||
*put++ = (unsigned char)(state->length);
|
||||
left--;
|
||||
state->mode = LEN;
|
||||
break;
|
||||
}
|
||||
|
||||
/* process end of block */
|
||||
if (here.op & 32) {
|
||||
Tracevv((stderr, "inflate: end of block\n"));
|
||||
state->mode = TYPE;
|
||||
break;
|
||||
}
|
||||
|
||||
/* invalid code */
|
||||
if (here.op & 64) {
|
||||
strm->msg = (char *)"invalid literal/length code";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
|
||||
/* length code -- get extra bits, if any */
|
||||
state->extra = (unsigned)(here.op) & 15;
|
||||
if (state->extra != 0) {
|
||||
NEEDBITS(state->extra);
|
||||
state->length += BITS(state->extra);
|
||||
DROPBITS(state->extra);
|
||||
}
|
||||
Tracevv((stderr, "inflate: length %u\n", state->length));
|
||||
|
||||
/* get distance code */
|
||||
for (;;) {
|
||||
here = state->distcode[BITS(state->distbits)];
|
||||
if ((unsigned)(here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
if ((here.op & 0xf0) == 0) {
|
||||
last = here;
|
||||
for (;;) {
|
||||
here = state->distcode[last.val +
|
||||
(BITS(last.bits + last.op) >> last.bits)];
|
||||
if ((unsigned)(last.bits + here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
DROPBITS(last.bits);
|
||||
}
|
||||
DROPBITS(here.bits);
|
||||
if (here.op & 64) {
|
||||
strm->msg = (char *)"invalid distance code";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
state->offset = (unsigned)here.val;
|
||||
|
||||
/* get distance extra bits, if any */
|
||||
state->extra = (unsigned)(here.op) & 15;
|
||||
if (state->extra != 0) {
|
||||
NEEDBITS(state->extra);
|
||||
state->offset += BITS(state->extra);
|
||||
DROPBITS(state->extra);
|
||||
}
|
||||
if (state->offset > state->wsize - (state->whave < state->wsize ?
|
||||
left : 0)) {
|
||||
strm->msg = (char *)"invalid distance too far back";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
Tracevv((stderr, "inflate: distance %u\n", state->offset));
|
||||
|
||||
/* copy match from window to output */
|
||||
do {
|
||||
ROOM();
|
||||
copy = state->wsize - state->offset;
|
||||
if (copy < left) {
|
||||
from = put + copy;
|
||||
copy = left - copy;
|
||||
}
|
||||
else {
|
||||
from = put - state->offset;
|
||||
copy = left;
|
||||
}
|
||||
if (copy > state->length) copy = state->length;
|
||||
state->length -= copy;
|
||||
left -= copy;
|
||||
do {
|
||||
*put++ = *from++;
|
||||
} while (--copy);
|
||||
} while (state->length != 0);
|
||||
break;
|
||||
|
||||
case DONE:
|
||||
/* inflate stream terminated properly -- write leftover output */
|
||||
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 */
|
||||
ret = Z_STREAM_ERROR;
|
||||
goto inf_leave;
|
||||
}
|
||||
|
||||
/* Return unused input */
|
||||
inf_leave:
|
||||
strm->next_in = next;
|
||||
strm->avail_in = have;
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ZEXPORT inflateBackEnd(strm)
|
||||
z_streamp strm;
|
||||
{
|
||||
if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
|
||||
return Z_STREAM_ERROR;
|
||||
ZFREE(strm, strm->state);
|
||||
strm->state = Z_NULL;
|
||||
Tracev((stderr, "inflate: end\n"));
|
||||
return Z_OK;
|
||||
}
|
||||
|
|
@ -1,392 +0,0 @@
|
|||
/* infblock.c -- interpret and process block types to last block
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "infblock.h"
|
||||
#include "inftrees.h"
|
||||
#include "infcodes.h"
|
||||
#include "infutil.h"
|
||||
|
||||
|
||||
/* simplify the use of the inflate_huft type with some defines */
|
||||
#define exop word.what.Exop
|
||||
#define bits word.what.Bits
|
||||
|
||||
/* Table for deflate from PKZIP's appnote.txt. */
|
||||
local const uInt border[] = { /* Order of the bit length code lengths */
|
||||
16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
|
||||
|
||||
/*
|
||||
Notes beyond the 1.93a appnote.txt:
|
||||
|
||||
1. Distance pointers never point before the beginning of the output
|
||||
stream.
|
||||
2. Distance pointers can point back across blocks, up to 32k away.
|
||||
3. There is an implied maximum of 7 bits for the bit length table and
|
||||
15 bits for the actual data.
|
||||
4. If only one code exists, then it is encoded using one bit. (Zero
|
||||
would be more efficient, but perhaps a little confusing.) If two
|
||||
codes exist, they are coded using one bit each (0 and 1).
|
||||
5. There is no way of sending zero distance codes--a dummy must be
|
||||
sent if there are none. (History: a pre 2.0 version of PKZIP would
|
||||
store blocks with no distance codes, but this was discovered to be
|
||||
too harsh a criterion.) Valid only for 1.93a. 2.04c does allow
|
||||
zero distance codes, which is sent as one code of zero bits in
|
||||
length.
|
||||
6. There are up to 286 literal/length codes. Code 256 represents the
|
||||
end-of-block. Note however that the static length tree defines
|
||||
288 codes just to fill out the Huffman codes. Codes 286 and 287
|
||||
cannot be used though, since there is no length base or extra bits
|
||||
defined for them. Similarily, there are up to 30 distance codes.
|
||||
However, static trees define 32 codes (all 5 bits) to fill out the
|
||||
Huffman codes, but the last two had better not show up in the data.
|
||||
7. Unzip can check dynamic Huffman blocks for complete code sets.
|
||||
The exception is that a single code would not be complete (see #4).
|
||||
8. The five bits following the block type is really the number of
|
||||
literal codes sent minus 257.
|
||||
9. Length codes 8,16,16 are interpreted as 13 length codes of 8 bits
|
||||
(1+6+6). Therefore, to output three times the length, you output
|
||||
three codes (1+1+1), whereas to output four times the same length,
|
||||
you only need two codes (1+3). Hmm.
|
||||
10. In the tree reconstruction algorithm, Code = Code + Increment
|
||||
only if BitLength(i) is not zero. (Pretty obvious.)
|
||||
11. Correction: 4 Bits: # of Bit Length codes - 4 (4 - 19)
|
||||
12. Note: length code 284 can represent 227-258, but length code 285
|
||||
really is 258. The last length deserves its own, short code
|
||||
since it gets used a lot in very redundant files. The length
|
||||
258 is special since 258 - 3 (the min match length) is 255.
|
||||
13. The literal/length and distance code bit lengths are read as a
|
||||
single stream of lengths. It is possible (and advantageous) for
|
||||
a repeat code (16, 17, or 18) to go across the boundary between
|
||||
the two sets of lengths.
|
||||
*/
|
||||
|
||||
|
||||
local void inflate_blocks_reset( /* s, z, c) */
|
||||
inflate_blocks_statef *s,
|
||||
z_streamp z,
|
||||
uLongf *c )
|
||||
{
|
||||
if (c != Z_NULL)
|
||||
*c = s->check;
|
||||
if (s->mode == BTREE || s->mode == DTREE)
|
||||
ZFREE(z, s->sub.trees.blens);
|
||||
if (s->mode == CODES)
|
||||
inflate_codes_free(s->sub.decode.codes, z);
|
||||
s->mode = TYPE;
|
||||
s->bitk = 0;
|
||||
s->bitb = 0;
|
||||
s->read = s->write = s->window;
|
||||
if (s->checkfn != Z_NULL)
|
||||
z->adler = s->check = (*s->checkfn)(0L, (const Bytef *)Z_NULL, 0);
|
||||
Tracev((stderr, "inflate: blocks reset\n"));
|
||||
}
|
||||
|
||||
|
||||
local inflate_blocks_statef *inflate_blocks_new( /* z, c, w) */
|
||||
z_streamp z,
|
||||
check_func c,
|
||||
uInt w )
|
||||
{
|
||||
inflate_blocks_statef *s;
|
||||
|
||||
if ((s = (inflate_blocks_statef *)ZALLOC
|
||||
(z,1,sizeof(struct inflate_blocks_state))) == Z_NULL)
|
||||
return s;
|
||||
if ((s->hufts =
|
||||
(inflate_huft *)ZALLOC(z, sizeof(inflate_huft), MANY)) == Z_NULL)
|
||||
{
|
||||
ZFREE(z, s);
|
||||
return Z_NULL;
|
||||
}
|
||||
if ((s->window = (Bytef *)ZALLOC(z, 1, w)) == Z_NULL)
|
||||
{
|
||||
ZFREE(z, s->hufts);
|
||||
ZFREE(z, s);
|
||||
return Z_NULL;
|
||||
}
|
||||
s->end = s->window + w;
|
||||
s->checkfn = c;
|
||||
s->mode = TYPE;
|
||||
Tracev((stderr, "inflate: blocks allocated\n"));
|
||||
inflate_blocks_reset(s, z, Z_NULL);
|
||||
return s;
|
||||
}
|
||||
|
||||
|
||||
local int inflate_blocks( /* s, z, r) */
|
||||
inflate_blocks_statef *s,
|
||||
z_streamp z,
|
||||
int r )
|
||||
{
|
||||
uInt t; /* temporary storage */
|
||||
uLong b; /* bit buffer */
|
||||
uInt k; /* bits in bit buffer */
|
||||
Bytef *p; /* input data pointer */
|
||||
uInt n; /* bytes available there */
|
||||
Bytef *q; /* output window write pointer */
|
||||
uInt m; /* bytes to end of window or read pointer */
|
||||
|
||||
/* copy input/output information to locals (UPDATE macro restores) */
|
||||
LOAD
|
||||
|
||||
/* process input based on current state */
|
||||
while (1) switch (s->mode)
|
||||
{
|
||||
case TYPE:
|
||||
NEEDBITS(3)
|
||||
t = (uInt)b & 7;
|
||||
s->last = t & 1;
|
||||
switch (t >> 1)
|
||||
{
|
||||
case 0: /* stored */
|
||||
Tracev((stderr, "inflate: stored block%s\n",
|
||||
s->last ? " (last)" : ""));
|
||||
DUMPBITS(3)
|
||||
t = k & 7; /* go to byte boundary */
|
||||
DUMPBITS(t)
|
||||
s->mode = LENS; /* get length of stored block */
|
||||
break;
|
||||
case 1: /* fixed */
|
||||
Tracev((stderr, "inflate: fixed codes block%s\n",
|
||||
s->last ? " (last)" : ""));
|
||||
{
|
||||
uInt bl, bd;
|
||||
inflate_huft *tl, *td;
|
||||
|
||||
inflate_trees_fixed(&bl, &bd, (const inflate_huft**)&tl,
|
||||
(const inflate_huft**)&td, z);
|
||||
s->sub.decode.codes = inflate_codes_new(bl, bd, tl, td, z);
|
||||
if (s->sub.decode.codes == Z_NULL)
|
||||
{
|
||||
r = Z_MEM_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
}
|
||||
DUMPBITS(3)
|
||||
s->mode = CODES;
|
||||
break;
|
||||
case 2: /* dynamic */
|
||||
Tracev((stderr, "inflate: dynamic codes block%s\n",
|
||||
s->last ? " (last)" : ""));
|
||||
DUMPBITS(3)
|
||||
s->mode = TABLE;
|
||||
break;
|
||||
case 3: /* illegal */
|
||||
DUMPBITS(3)
|
||||
s->mode = BAD;
|
||||
z->msg = (char*)"invalid block type";
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
break;
|
||||
case LENS:
|
||||
NEEDBITS(32)
|
||||
if ((((~b) >> 16) & 0xffff) != (b & 0xffff))
|
||||
{
|
||||
s->mode = BAD;
|
||||
z->msg = (char*)"invalid stored block lengths";
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
s->sub.left = (uInt)b & 0xffff;
|
||||
b = k = 0; /* dump bits */
|
||||
Tracev((stderr, "inflate: stored length %u\n", s->sub.left));
|
||||
s->mode = s->sub.left ? STORED : (s->last ? DRY : TYPE);
|
||||
break;
|
||||
case STORED:
|
||||
if (n == 0)
|
||||
LEAVE
|
||||
NEEDOUT
|
||||
t = s->sub.left;
|
||||
if (t > n) t = n;
|
||||
if (t > m) t = m;
|
||||
zmemcpy(q, p, t);
|
||||
p += t; n -= t;
|
||||
q += t; m -= t;
|
||||
if ((s->sub.left -= t) != 0)
|
||||
break;
|
||||
Tracev((stderr, "inflate: stored end, %lu total out\n",
|
||||
z->total_out + (q >= s->read ? q - s->read :
|
||||
(s->end - s->read) + (q - s->window))));
|
||||
s->mode = s->last ? DRY : TYPE;
|
||||
break;
|
||||
case TABLE:
|
||||
NEEDBITS(14)
|
||||
s->sub.trees.table = t = (uInt)b & 0x3fff;
|
||||
#ifndef PKZIP_BUG_WORKAROUND
|
||||
if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
|
||||
{
|
||||
s->mode = BAD;
|
||||
z->msg = (char*)"too many length or distance symbols";
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
#endif
|
||||
t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
|
||||
if ((s->sub.trees.blens = (uIntf*)ZALLOC(z, t, sizeof(uInt))) == Z_NULL)
|
||||
{
|
||||
r = Z_MEM_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
DUMPBITS(14)
|
||||
s->sub.trees.index = 0;
|
||||
Tracev((stderr, "inflate: table sizes ok\n"));
|
||||
s->mode = BTREE;
|
||||
/* fall through */
|
||||
case BTREE:
|
||||
while (s->sub.trees.index < 4 + (s->sub.trees.table >> 10))
|
||||
{
|
||||
NEEDBITS(3)
|
||||
s->sub.trees.blens[border[s->sub.trees.index++]] = (uInt)b & 7;
|
||||
DUMPBITS(3)
|
||||
}
|
||||
while (s->sub.trees.index < 19)
|
||||
s->sub.trees.blens[border[s->sub.trees.index++]] = 0;
|
||||
s->sub.trees.bb = 7;
|
||||
t = inflate_trees_bits(s->sub.trees.blens, &s->sub.trees.bb,
|
||||
&s->sub.trees.tb, s->hufts, z);
|
||||
if (t != Z_OK)
|
||||
{
|
||||
r = t;
|
||||
if (r == Z_DATA_ERROR)
|
||||
{
|
||||
ZFREE(z, s->sub.trees.blens);
|
||||
s->mode = BAD;
|
||||
}
|
||||
LEAVE
|
||||
}
|
||||
s->sub.trees.index = 0;
|
||||
Tracev((stderr, "inflate: bits tree ok\n"));
|
||||
s->mode = DTREE;
|
||||
/* fall through */
|
||||
case DTREE:
|
||||
while (t = s->sub.trees.table,
|
||||
s->sub.trees.index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f))
|
||||
{
|
||||
inflate_huft *h;
|
||||
uInt i, j, c;
|
||||
|
||||
t = s->sub.trees.bb;
|
||||
NEEDBITS(t)
|
||||
h = s->sub.trees.tb + ((uInt)b & inflate_mask[t]);
|
||||
t = h->bits;
|
||||
c = h->base;
|
||||
if (c < 16)
|
||||
{
|
||||
DUMPBITS(t)
|
||||
s->sub.trees.blens[s->sub.trees.index++] = c;
|
||||
}
|
||||
else /* c == 16..18 */
|
||||
{
|
||||
i = c == 18 ? 7 : c - 14;
|
||||
j = c == 18 ? 11 : 3;
|
||||
NEEDBITS(t + i)
|
||||
DUMPBITS(t)
|
||||
j += (uInt)b & inflate_mask[i];
|
||||
DUMPBITS(i)
|
||||
i = s->sub.trees.index;
|
||||
t = s->sub.trees.table;
|
||||
if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) ||
|
||||
(c == 16 && i < 1))
|
||||
{
|
||||
ZFREE(z, s->sub.trees.blens);
|
||||
s->mode = BAD;
|
||||
z->msg = (char*)"invalid bit length repeat";
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
c = c == 16 ? s->sub.trees.blens[i - 1] : 0;
|
||||
do {
|
||||
s->sub.trees.blens[i++] = c;
|
||||
} while (--j);
|
||||
s->sub.trees.index = i;
|
||||
}
|
||||
}
|
||||
s->sub.trees.tb = Z_NULL;
|
||||
{
|
||||
uInt bl, bd;
|
||||
inflate_huft *tl, *td;
|
||||
inflate_codes_statef *c;
|
||||
|
||||
bl = 9; /* must be <= 9 for lookahead assumptions */
|
||||
bd = 6; /* must be <= 9 for lookahead assumptions */
|
||||
t = s->sub.trees.table;
|
||||
t = inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f),
|
||||
s->sub.trees.blens, &bl, &bd, &tl, &td,
|
||||
s->hufts, z);
|
||||
if (t != Z_OK)
|
||||
{
|
||||
if (t == (uInt)Z_DATA_ERROR)
|
||||
{
|
||||
ZFREE(z, s->sub.trees.blens);
|
||||
s->mode = BAD;
|
||||
}
|
||||
r = t;
|
||||
LEAVE
|
||||
}
|
||||
Tracev((stderr, "inflate: trees ok\n"));
|
||||
if ((c = inflate_codes_new(bl, bd, tl, td, z)) == Z_NULL)
|
||||
{
|
||||
r = Z_MEM_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
s->sub.decode.codes = c;
|
||||
}
|
||||
ZFREE(z, s->sub.trees.blens);
|
||||
s->mode = CODES;
|
||||
/* fall through */
|
||||
case CODES:
|
||||
UPDATE
|
||||
if ((r = inflate_codes(s, z, r)) != Z_STREAM_END)
|
||||
return inflate_flush(s, z, r);
|
||||
r = Z_OK;
|
||||
inflate_codes_free(s->sub.decode.codes, z);
|
||||
LOAD
|
||||
Tracev((stderr, "inflate: codes end, %lu total out\n",
|
||||
z->total_out + (q >= s->read ? q - s->read :
|
||||
(s->end - s->read) + (q - s->window))));
|
||||
if (!s->last)
|
||||
{
|
||||
s->mode = TYPE;
|
||||
break;
|
||||
}
|
||||
s->mode = DRY;
|
||||
/* fall through */
|
||||
case DRY:
|
||||
FLUSH
|
||||
if (s->read != s->write)
|
||||
LEAVE
|
||||
s->mode = DONE;
|
||||
/* fall through */
|
||||
case DONE:
|
||||
r = Z_STREAM_END;
|
||||
LEAVE
|
||||
case BAD:
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
default:
|
||||
r = Z_STREAM_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
#ifdef NEED_DUMMY_RETURN
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
local int inflate_blocks_free( /* s, z) */
|
||||
inflate_blocks_statef *s,
|
||||
z_streamp z )
|
||||
{
|
||||
inflate_blocks_reset(s, z, Z_NULL);
|
||||
ZFREE(z, s->window);
|
||||
ZFREE(z, s->hufts);
|
||||
ZFREE(z, s);
|
||||
Tracev((stderr, "inflate: blocks freed\n"));
|
||||
return Z_OK;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -1,36 +0,0 @@
|
|||
/* infblock.h -- header to use infblock.c
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
#ifndef _INFBLOCK_H
|
||||
#define _INFBLOCK_H
|
||||
|
||||
struct inflate_blocks_state;
|
||||
typedef struct inflate_blocks_state FAR inflate_blocks_statef;
|
||||
|
||||
local inflate_blocks_statef * inflate_blocks_new OF((
|
||||
z_streamp z,
|
||||
check_func c, /* check function */
|
||||
uInt w)); /* window size */
|
||||
|
||||
local int inflate_blocks OF((
|
||||
inflate_blocks_statef *,
|
||||
z_streamp ,
|
||||
int)); /* initial return code */
|
||||
|
||||
local void inflate_blocks_reset OF((
|
||||
inflate_blocks_statef *,
|
||||
z_streamp ,
|
||||
uLongf *)); /* check value on output */
|
||||
|
||||
local int inflate_blocks_free OF((
|
||||
inflate_blocks_statef *,
|
||||
z_streamp));
|
||||
|
||||
#endif /* _INFBLOCK_H */
|
||||
|
|
@ -1,254 +0,0 @@
|
|||
/* infcodes.c -- process literals and length/distance pairs
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "inftrees.h"
|
||||
#include "infblock.h"
|
||||
#include "infcodes.h"
|
||||
#include "infutil.h"
|
||||
|
||||
/* simplify the use of the inflate_huft type with some defines */
|
||||
#define exop word.what.Exop
|
||||
#define bits word.what.Bits
|
||||
|
||||
typedef enum { /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
|
||||
START, /* x: set up for LEN */
|
||||
LEN, /* i: get length/literal/eob next */
|
||||
LENEXT, /* i: getting length extra (have base) */
|
||||
DIST, /* i: get distance next */
|
||||
DISTEXT, /* i: getting distance extra */
|
||||
COPY, /* o: copying bytes in window, waiting for space */
|
||||
LIT, /* o: got literal, waiting for output space */
|
||||
WASH, /* o: got eob, possibly still output waiting */
|
||||
END, /* x: got eob and all data flushed */
|
||||
BADCODE} /* x: got error */
|
||||
inflate_codes_mode;
|
||||
|
||||
/* inflate codes private state */
|
||||
struct inflate_codes_state {
|
||||
|
||||
/* mode */
|
||||
inflate_codes_mode mode; /* current inflate_codes mode */
|
||||
|
||||
/* mode dependent information */
|
||||
uInt len;
|
||||
union {
|
||||
struct {
|
||||
inflate_huft *tree; /* pointer into tree */
|
||||
uInt need; /* bits needed */
|
||||
} code; /* if LEN or DIST, where in tree */
|
||||
uInt lit; /* if LIT, literal */
|
||||
struct {
|
||||
uInt get; /* bits to get for extra */
|
||||
uInt dist; /* distance back to copy from */
|
||||
} copy; /* if EXT or COPY, where and how much */
|
||||
} sub; /* submode */
|
||||
|
||||
/* mode independent information */
|
||||
Byte lbits; /* ltree bits decoded per branch */
|
||||
Byte dbits; /* dtree bits decoder per branch */
|
||||
inflate_huft *ltree; /* literal/length/eob tree */
|
||||
inflate_huft *dtree; /* distance tree */
|
||||
|
||||
};
|
||||
|
||||
|
||||
local inflate_codes_statef *inflate_codes_new( /* bl, bd, tl, td, z) */
|
||||
uInt bl, uInt bd,
|
||||
inflate_huft *tl,
|
||||
inflate_huft *td, /* need separate declaration for Borland C++ */
|
||||
z_streamp z )
|
||||
{
|
||||
inflate_codes_statef *c;
|
||||
|
||||
if ((c = (inflate_codes_statef *)
|
||||
ZALLOC(z,1,sizeof(struct inflate_codes_state))) != Z_NULL)
|
||||
{
|
||||
c->mode = START;
|
||||
c->lbits = (Byte)bl;
|
||||
c->dbits = (Byte)bd;
|
||||
c->ltree = tl;
|
||||
c->dtree = td;
|
||||
Tracev((stderr, "inflate: codes new\n"));
|
||||
}
|
||||
return c;
|
||||
}
|
||||
|
||||
|
||||
local int inflate_codes( /* s, z, r) */
|
||||
inflate_blocks_statef *s,
|
||||
z_streamp z,
|
||||
int r )
|
||||
{
|
||||
uInt j; /* temporary storage */
|
||||
inflate_huft *t; /* temporary pointer */
|
||||
uInt e; /* extra bits or operation */
|
||||
uLong b; /* bit buffer */
|
||||
uInt k; /* bits in bit buffer */
|
||||
Bytef *p; /* input data pointer */
|
||||
uInt n; /* bytes available there */
|
||||
Bytef *q; /* output window write pointer */
|
||||
uInt m; /* bytes to end of window or read pointer */
|
||||
Bytef *f; /* pointer to copy strings from */
|
||||
inflate_codes_statef *c = s->sub.decode.codes; /* codes state */
|
||||
|
||||
/* copy input/output information to locals (UPDATE macro restores) */
|
||||
LOAD
|
||||
|
||||
/* process input and output based on current state */
|
||||
while (1) switch (c->mode)
|
||||
{ /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
|
||||
case START: /* x: set up for LEN */
|
||||
#ifndef SLOW
|
||||
if (m >= 258 && n >= 10)
|
||||
{
|
||||
UPDATE
|
||||
r = inflate_fast(c->lbits, c->dbits, c->ltree, c->dtree, s, z);
|
||||
LOAD
|
||||
if (r != Z_OK)
|
||||
{
|
||||
c->mode = r == Z_STREAM_END ? WASH : BADCODE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif /* !SLOW */
|
||||
c->sub.code.need = c->lbits;
|
||||
c->sub.code.tree = c->ltree;
|
||||
c->mode = LEN;
|
||||
/* fall through */
|
||||
case LEN: /* i: get length/literal/eob next */
|
||||
j = c->sub.code.need;
|
||||
NEEDBITS(j)
|
||||
t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
|
||||
DUMPBITS(t->bits)
|
||||
e = (uInt)(t->exop);
|
||||
if (e == 0) /* literal */
|
||||
{
|
||||
c->sub.lit = t->base;
|
||||
Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
|
||||
"inflate: literal '%c'\n" :
|
||||
"inflate: literal 0x%02x\n", t->base));
|
||||
c->mode = LIT;
|
||||
break;
|
||||
}
|
||||
if (e & 16) /* length */
|
||||
{
|
||||
c->sub.copy.get = e & 15;
|
||||
c->len = t->base;
|
||||
c->mode = LENEXT;
|
||||
break;
|
||||
}
|
||||
if ((e & 64) == 0) /* next table */
|
||||
{
|
||||
c->sub.code.need = e;
|
||||
c->sub.code.tree = t + t->base;
|
||||
break;
|
||||
}
|
||||
if (e & 32) /* end of block */
|
||||
{
|
||||
Tracevv((stderr, "inflate: end of block\n"));
|
||||
c->mode = WASH;
|
||||
break;
|
||||
}
|
||||
c->mode = BADCODE; /* invalid code */
|
||||
z->msg = (char*)"invalid literal/length code";
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
case LENEXT: /* i: getting length extra (have base) */
|
||||
j = c->sub.copy.get;
|
||||
NEEDBITS(j)
|
||||
c->len += (uInt)b & inflate_mask[j];
|
||||
DUMPBITS(j)
|
||||
c->sub.code.need = c->dbits;
|
||||
c->sub.code.tree = c->dtree;
|
||||
Tracevv((stderr, "inflate: length %u\n", c->len));
|
||||
c->mode = DIST;
|
||||
/* fall through */
|
||||
case DIST: /* i: get distance next */
|
||||
j = c->sub.code.need;
|
||||
NEEDBITS(j)
|
||||
t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
|
||||
DUMPBITS(t->bits)
|
||||
e = (uInt)(t->exop);
|
||||
if (e & 16) /* distance */
|
||||
{
|
||||
c->sub.copy.get = e & 15;
|
||||
c->sub.copy.dist = t->base;
|
||||
c->mode = DISTEXT;
|
||||
break;
|
||||
}
|
||||
if ((e & 64) == 0) /* next table */
|
||||
{
|
||||
c->sub.code.need = e;
|
||||
c->sub.code.tree = t + t->base;
|
||||
break;
|
||||
}
|
||||
c->mode = BADCODE; /* invalid code */
|
||||
z->msg = (char*)"invalid distance code";
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
case DISTEXT: /* i: getting distance extra */
|
||||
j = c->sub.copy.get;
|
||||
NEEDBITS(j)
|
||||
c->sub.copy.dist += (uInt)b & inflate_mask[j];
|
||||
DUMPBITS(j)
|
||||
Tracevv((stderr, "inflate: distance %u\n", c->sub.copy.dist));
|
||||
c->mode = COPY;
|
||||
/* fall through */
|
||||
case COPY: /* o: copying bytes in window, waiting for space */
|
||||
f = q - c->sub.copy.dist;
|
||||
while (f < s->window) /* modulo window size-"while" instead */
|
||||
f += s->end - s->window; /* of "if" handles invalid distances */
|
||||
while (c->len)
|
||||
{
|
||||
NEEDOUT
|
||||
OUTBYTE(*f++)
|
||||
if (f == s->end)
|
||||
f = s->window;
|
||||
c->len--;
|
||||
}
|
||||
c->mode = START;
|
||||
break;
|
||||
case LIT: /* o: got literal, waiting for output space */
|
||||
NEEDOUT
|
||||
OUTBYTE(c->sub.lit)
|
||||
c->mode = START;
|
||||
break;
|
||||
case WASH: /* o: got eob, possibly more output */
|
||||
if (k > 7) /* return unused byte, if any */
|
||||
{
|
||||
Assert(k < 16, "inflate_codes grabbed too many bytes")
|
||||
k -= 8;
|
||||
n++;
|
||||
p--; /* can always return one */
|
||||
}
|
||||
FLUSH
|
||||
if (s->read != s->write)
|
||||
LEAVE
|
||||
c->mode = END;
|
||||
/* fall through */
|
||||
case END:
|
||||
r = Z_STREAM_END;
|
||||
LEAVE
|
||||
case BADCODE: /* x: got error */
|
||||
r = Z_DATA_ERROR;
|
||||
LEAVE
|
||||
default:
|
||||
r = Z_STREAM_ERROR;
|
||||
LEAVE
|
||||
}
|
||||
#ifdef NEED_DUMMY_RETURN
|
||||
return Z_STREAM_ERROR; /* Some dumb compilers complain without this */
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
local void inflate_codes_free( /* c, z) */
|
||||
inflate_codes_statef *c,
|
||||
z_streamp z )
|
||||
{
|
||||
ZFREE(z, c);
|
||||
Tracev((stderr, "inflate: codes free\n"));
|
||||
}
|
||||
|
|
@ -1,31 +0,0 @@
|
|||
/* infcodes.h -- header to use infcodes.c
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
#ifndef _INFCODES_H
|
||||
#define _INFCODES_H
|
||||
|
||||
struct inflate_codes_state;
|
||||
typedef struct inflate_codes_state FAR inflate_codes_statef;
|
||||
|
||||
local inflate_codes_statef *inflate_codes_new OF((
|
||||
uInt, uInt,
|
||||
inflate_huft *, inflate_huft *,
|
||||
z_streamp ));
|
||||
|
||||
local int inflate_codes OF((
|
||||
inflate_blocks_statef *,
|
||||
z_streamp ,
|
||||
int));
|
||||
|
||||
local void inflate_codes_free OF((
|
||||
inflate_codes_statef *,
|
||||
z_streamp ));
|
||||
|
||||
#endif /* _INFCODES_H */
|
||||
|
|
@ -0,0 +1,323 @@
|
|||
/* inffast.c -- fast decoding
|
||||
* Copyright (C) 1995-2017 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "inftrees.h"
|
||||
#include "inflate.h"
|
||||
#include "inffast.h"
|
||||
|
||||
#ifdef ASMINF
|
||||
# pragma message("Assembler code may have bugs -- use at your own risk")
|
||||
#else
|
||||
|
||||
/*
|
||||
Decode literal, length, and distance codes and write out the resulting
|
||||
literal and match bytes until either not enough input or output is
|
||||
available, an end-of-block is encountered, or a data error is encountered.
|
||||
When large enough input and output buffers are supplied to inflate(), for
|
||||
example, a 16K input buffer and a 64K output buffer, more than 95% of the
|
||||
inflate execution time is spent in this routine.
|
||||
|
||||
Entry assumptions:
|
||||
|
||||
state->mode == LEN
|
||||
strm->avail_in >= 6
|
||||
strm->avail_out >= 258
|
||||
start >= strm->avail_out
|
||||
state->bits < 8
|
||||
|
||||
On return, state->mode is one of:
|
||||
|
||||
LEN -- ran out of enough output space or enough available input
|
||||
TYPE -- reached end of block code, inflate() to interpret next block
|
||||
BAD -- error in block data
|
||||
|
||||
Notes:
|
||||
|
||||
- The maximum input bits used by a length/distance pair is 15 bits for the
|
||||
length code, 5 bits for the length extra, 15 bits for the distance code,
|
||||
and 13 bits for the distance extra. This totals 48 bits, or six bytes.
|
||||
Therefore if strm->avail_in >= 6, then there is enough input to avoid
|
||||
checking for available input while decoding.
|
||||
|
||||
- The maximum bytes that a single length/distance pair can output is 258
|
||||
bytes, which is the maximum length that can be coded. inflate_fast()
|
||||
requires strm->avail_out >= 258 for each loop to avoid checking for
|
||||
output space.
|
||||
*/
|
||||
void ZLIB_INTERNAL inflate_fast(strm, start)
|
||||
z_streamp strm;
|
||||
unsigned start; /* inflate()'s starting value for strm->avail_out */
|
||||
{
|
||||
struct inflate_state FAR *state;
|
||||
z_const unsigned char FAR *in; /* local strm->next_in */
|
||||
z_const unsigned char FAR *last; /* have enough input while in < last */
|
||||
unsigned char FAR *out; /* local strm->next_out */
|
||||
unsigned char FAR *beg; /* inflate()'s initial strm->next_out */
|
||||
unsigned char FAR *end; /* while out < end, enough space available */
|
||||
#ifdef INFLATE_STRICT
|
||||
unsigned dmax; /* maximum distance from zlib header */
|
||||
#endif
|
||||
unsigned wsize; /* window size or zero if not using window */
|
||||
unsigned whave; /* valid bytes in the window */
|
||||
unsigned wnext; /* window write index */
|
||||
unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */
|
||||
unsigned long hold; /* local strm->hold */
|
||||
unsigned bits; /* local strm->bits */
|
||||
code const FAR *lcode; /* local strm->lencode */
|
||||
code const FAR *dcode; /* local strm->distcode */
|
||||
unsigned lmask; /* mask for first level of length codes */
|
||||
unsigned dmask; /* mask for first level of distance codes */
|
||||
code here; /* retrieved table entry */
|
||||
unsigned op; /* code bits, operation, extra bits, or */
|
||||
/* window position, window bytes to copy */
|
||||
unsigned len; /* match length, unused bytes */
|
||||
unsigned dist; /* match distance */
|
||||
unsigned char FAR *from; /* where to copy match from */
|
||||
|
||||
/* copy state to local variables */
|
||||
state = (struct inflate_state FAR *)strm->state;
|
||||
in = strm->next_in;
|
||||
last = in + (strm->avail_in - 5);
|
||||
out = strm->next_out;
|
||||
beg = out - (start - strm->avail_out);
|
||||
end = out + (strm->avail_out - 257);
|
||||
#ifdef INFLATE_STRICT
|
||||
dmax = state->dmax;
|
||||
#endif
|
||||
wsize = state->wsize;
|
||||
whave = state->whave;
|
||||
wnext = state->wnext;
|
||||
window = state->window;
|
||||
hold = state->hold;
|
||||
bits = state->bits;
|
||||
lcode = state->lencode;
|
||||
dcode = state->distcode;
|
||||
lmask = (1U << state->lenbits) - 1;
|
||||
dmask = (1U << state->distbits) - 1;
|
||||
|
||||
/* decode literals and length/distances until end-of-block or not enough
|
||||
input data or output space */
|
||||
do {
|
||||
if (bits < 15) {
|
||||
hold += (unsigned long)(*in++) << bits;
|
||||
bits += 8;
|
||||
hold += (unsigned long)(*in++) << bits;
|
||||
bits += 8;
|
||||
}
|
||||
here = lcode[hold & lmask];
|
||||
dolen:
|
||||
op = (unsigned)(here.bits);
|
||||
hold >>= op;
|
||||
bits -= op;
|
||||
op = (unsigned)(here.op);
|
||||
if (op == 0) { /* literal */
|
||||
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
|
||||
"inflate: literal '%c'\n" :
|
||||
"inflate: literal 0x%02x\n", here.val));
|
||||
*out++ = (unsigned char)(here.val);
|
||||
}
|
||||
else if (op & 16) { /* length base */
|
||||
len = (unsigned)(here.val);
|
||||
op &= 15; /* number of extra bits */
|
||||
if (op) {
|
||||
if (bits < op) {
|
||||
hold += (unsigned long)(*in++) << bits;
|
||||
bits += 8;
|
||||
}
|
||||
len += (unsigned)hold & ((1U << op) - 1);
|
||||
hold >>= op;
|
||||
bits -= op;
|
||||
}
|
||||
Tracevv((stderr, "inflate: length %u\n", len));
|
||||
if (bits < 15) {
|
||||
hold += (unsigned long)(*in++) << bits;
|
||||
bits += 8;
|
||||
hold += (unsigned long)(*in++) << bits;
|
||||
bits += 8;
|
||||
}
|
||||
here = dcode[hold & dmask];
|
||||
dodist:
|
||||
op = (unsigned)(here.bits);
|
||||
hold >>= op;
|
||||
bits -= op;
|
||||
op = (unsigned)(here.op);
|
||||
if (op & 16) { /* distance base */
|
||||
dist = (unsigned)(here.val);
|
||||
op &= 15; /* number of extra bits */
|
||||
if (bits < op) {
|
||||
hold += (unsigned long)(*in++) << bits;
|
||||
bits += 8;
|
||||
if (bits < op) {
|
||||
hold += (unsigned long)(*in++) << bits;
|
||||
bits += 8;
|
||||
}
|
||||
}
|
||||
dist += (unsigned)hold & ((1U << op) - 1);
|
||||
#ifdef INFLATE_STRICT
|
||||
if (dist > dmax) {
|
||||
strm->msg = (char *)"invalid distance too far back";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
hold >>= op;
|
||||
bits -= op;
|
||||
Tracevv((stderr, "inflate: distance %u\n", dist));
|
||||
op = (unsigned)(out - beg); /* max distance in output */
|
||||
if (dist > op) { /* see if copy from window */
|
||||
op = dist - op; /* distance back in window */
|
||||
if (op > whave) {
|
||||
if (state->sane) {
|
||||
strm->msg =
|
||||
(char *)"invalid distance too far back";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
|
||||
if (len <= op - whave) {
|
||||
do {
|
||||
*out++ = 0;
|
||||
} while (--len);
|
||||
continue;
|
||||
}
|
||||
len -= op - whave;
|
||||
do {
|
||||
*out++ = 0;
|
||||
} while (--op > whave);
|
||||
if (op == 0) {
|
||||
from = out - dist;
|
||||
do {
|
||||
*out++ = *from++;
|
||||
} while (--len);
|
||||
continue;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
from = window;
|
||||
if (wnext == 0) { /* very common case */
|
||||
from += wsize - op;
|
||||
if (op < len) { /* some from window */
|
||||
len -= op;
|
||||
do {
|
||||
*out++ = *from++;
|
||||
} while (--op);
|
||||
from = out - dist; /* rest from output */
|
||||
}
|
||||
}
|
||||
else if (wnext < op) { /* wrap around window */
|
||||
from += wsize + wnext - op;
|
||||
op -= wnext;
|
||||
if (op < len) { /* some from end of window */
|
||||
len -= op;
|
||||
do {
|
||||
*out++ = *from++;
|
||||
} while (--op);
|
||||
from = window;
|
||||
if (wnext < len) { /* some from start of window */
|
||||
op = wnext;
|
||||
len -= op;
|
||||
do {
|
||||
*out++ = *from++;
|
||||
} while (--op);
|
||||
from = out - dist; /* rest from output */
|
||||
}
|
||||
}
|
||||
}
|
||||
else { /* contiguous in window */
|
||||
from += wnext - op;
|
||||
if (op < len) { /* some from window */
|
||||
len -= op;
|
||||
do {
|
||||
*out++ = *from++;
|
||||
} while (--op);
|
||||
from = out - dist; /* rest from output */
|
||||
}
|
||||
}
|
||||
while (len > 2) {
|
||||
*out++ = *from++;
|
||||
*out++ = *from++;
|
||||
*out++ = *from++;
|
||||
len -= 3;
|
||||
}
|
||||
if (len) {
|
||||
*out++ = *from++;
|
||||
if (len > 1)
|
||||
*out++ = *from++;
|
||||
}
|
||||
}
|
||||
else {
|
||||
from = out - dist; /* copy direct from output */
|
||||
do { /* minimum length is three */
|
||||
*out++ = *from++;
|
||||
*out++ = *from++;
|
||||
*out++ = *from++;
|
||||
len -= 3;
|
||||
} while (len > 2);
|
||||
if (len) {
|
||||
*out++ = *from++;
|
||||
if (len > 1)
|
||||
*out++ = *from++;
|
||||
}
|
||||
}
|
||||
}
|
||||
else if ((op & 64) == 0) { /* 2nd level distance code */
|
||||
here = dcode[here.val + (hold & ((1U << op) - 1))];
|
||||
goto dodist;
|
||||
}
|
||||
else {
|
||||
strm->msg = (char *)"invalid distance code";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else if ((op & 64) == 0) { /* 2nd level length code */
|
||||
here = lcode[here.val + (hold & ((1U << op) - 1))];
|
||||
goto dolen;
|
||||
}
|
||||
else if (op & 32) { /* end-of-block */
|
||||
Tracevv((stderr, "inflate: end of block\n"));
|
||||
state->mode = TYPE;
|
||||
break;
|
||||
}
|
||||
else {
|
||||
strm->msg = (char *)"invalid literal/length code";
|
||||
state->mode = BAD;
|
||||
break;
|
||||
}
|
||||
} while (in < last && out < end);
|
||||
|
||||
/* return unused bytes (on entry, bits < 8, so in won't go too far back) */
|
||||
len = bits >> 3;
|
||||
in -= len;
|
||||
bits -= len << 3;
|
||||
hold &= (1U << bits) - 1;
|
||||
|
||||
/* update state and return */
|
||||
strm->next_in = in;
|
||||
strm->next_out = out;
|
||||
strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
|
||||
strm->avail_out = (unsigned)(out < end ?
|
||||
257 + (end - out) : 257 - (out - end));
|
||||
state->hold = hold;
|
||||
state->bits = bits;
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
|
||||
- Using bit fields for code structure
|
||||
- Different op definition to avoid & for extra bits (do & for table bits)
|
||||
- Three separate decoding do-loops for direct, window, and wnext == 0
|
||||
- Special case for distance > 1 copies to do overlapped load and store copy
|
||||
- Explicit branch predictions (based on measured branch probabilities)
|
||||
- Deferring match copy and interspersed it with decoding subsequent codes
|
||||
- Swapping literal/length else
|
||||
- Swapping window/direct else
|
||||
- Larger unrolled copy loops (three is about right)
|
||||
- Moving len -= 3 statement into middle of loop
|
||||
*/
|
||||
|
||||
#endif /* !ASMINF */
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
/* inffast.h -- header to use inffast.c
|
||||
* Copyright (C) 1995-2003, 2010 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
#ifndef Z_INFFAST_H
|
||||
#define Z_INFFAST_H
|
||||
void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));
|
||||
#endif
|
||||
|
|
@ -1,151 +1,97 @@
|
|||
/* inffixed.h -- table for decoding fixed codes
|
||||
* Generated automatically by the maketree.c program
|
||||
*/
|
||||
#ifndef Z_INFFIXED_H
|
||||
#define Z_INFFIXED_H
|
||||
/* inffixed.h -- table for decoding fixed codes
|
||||
* Generated automatically by makefixed().
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
/* WARNING: this file should *not* be used by applications.
|
||||
It is part of the implementation of this library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
local const uInt fixed_bl = 9;
|
||||
local const uInt fixed_bd = 5;
|
||||
local const inflate_huft fixed_tl[] = {
|
||||
{{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
|
||||
{{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},192},
|
||||
{{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},160},
|
||||
{{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},224},
|
||||
{{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},144},
|
||||
{{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},208},
|
||||
{{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},176},
|
||||
{{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},240},
|
||||
{{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
|
||||
{{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},200},
|
||||
{{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},168},
|
||||
{{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},232},
|
||||
{{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},152},
|
||||
{{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},216},
|
||||
{{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},184},
|
||||
{{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},248},
|
||||
{{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
|
||||
{{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},196},
|
||||
{{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},164},
|
||||
{{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},228},
|
||||
{{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},148},
|
||||
{{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},212},
|
||||
{{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},180},
|
||||
{{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},244},
|
||||
{{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
|
||||
{{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},204},
|
||||
{{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},172},
|
||||
{{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},236},
|
||||
{{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},156},
|
||||
{{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},220},
|
||||
{{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},188},
|
||||
{{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},252},
|
||||
{{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
|
||||
{{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},194},
|
||||
{{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},162},
|
||||
{{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},226},
|
||||
{{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},146},
|
||||
{{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},210},
|
||||
{{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},178},
|
||||
{{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},242},
|
||||
{{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
|
||||
{{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},202},
|
||||
{{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},170},
|
||||
{{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},234},
|
||||
{{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},154},
|
||||
{{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},218},
|
||||
{{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},186},
|
||||
{{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},250},
|
||||
{{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
|
||||
{{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},198},
|
||||
{{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},166},
|
||||
{{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},230},
|
||||
{{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},150},
|
||||
{{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},214},
|
||||
{{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},182},
|
||||
{{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},246},
|
||||
{{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
|
||||
{{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},206},
|
||||
{{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},174},
|
||||
{{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},238},
|
||||
{{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},158},
|
||||
{{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},222},
|
||||
{{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},190},
|
||||
{{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},254},
|
||||
{{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
|
||||
{{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},193},
|
||||
{{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},161},
|
||||
{{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},225},
|
||||
{{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},145},
|
||||
{{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},209},
|
||||
{{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},177},
|
||||
{{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},241},
|
||||
{{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
|
||||
{{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},201},
|
||||
{{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},169},
|
||||
{{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},233},
|
||||
{{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},153},
|
||||
{{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},217},
|
||||
{{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},185},
|
||||
{{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},249},
|
||||
{{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
|
||||
{{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},197},
|
||||
{{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},165},
|
||||
{{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},229},
|
||||
{{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},149},
|
||||
{{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},213},
|
||||
{{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},181},
|
||||
{{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},245},
|
||||
{{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
|
||||
{{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},205},
|
||||
{{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},173},
|
||||
{{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},237},
|
||||
{{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},157},
|
||||
{{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},221},
|
||||
{{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},189},
|
||||
{{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},253},
|
||||
{{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
|
||||
{{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},195},
|
||||
{{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},163},
|
||||
{{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},227},
|
||||
{{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},147},
|
||||
{{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},211},
|
||||
{{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},179},
|
||||
{{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},243},
|
||||
{{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
|
||||
{{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},203},
|
||||
{{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},171},
|
||||
{{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},235},
|
||||
{{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},155},
|
||||
{{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},219},
|
||||
{{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},187},
|
||||
{{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},251},
|
||||
{{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
|
||||
{{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},199},
|
||||
{{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},167},
|
||||
{{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},231},
|
||||
{{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},151},
|
||||
{{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},215},
|
||||
{{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},183},
|
||||
{{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},247},
|
||||
{{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
|
||||
{{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},207},
|
||||
{{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},175},
|
||||
{{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},239},
|
||||
{{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},159},
|
||||
{{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},223},
|
||||
{{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},191},
|
||||
{{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},255}
|
||||
};
|
||||
local const inflate_huft fixed_td[] = {
|
||||
{{{80,5}},1}, {{{87,5}},257}, {{{83,5}},17}, {{{91,5}},4097},
|
||||
{{{81,5}},5}, {{{89,5}},1025}, {{{85,5}},65}, {{{93,5}},16385},
|
||||
{{{80,5}},3}, {{{88,5}},513}, {{{84,5}},33}, {{{92,5}},8193},
|
||||
{{{82,5}},9}, {{{90,5}},2049}, {{{86,5}},129}, {{{192,5}},24577},
|
||||
{{{80,5}},2}, {{{87,5}},385}, {{{83,5}},25}, {{{91,5}},6145},
|
||||
{{{81,5}},7}, {{{89,5}},1537}, {{{85,5}},97}, {{{93,5}},24577},
|
||||
{{{80,5}},4}, {{{88,5}},769}, {{{84,5}},49}, {{{92,5}},12289},
|
||||
{{{82,5}},13}, {{{90,5}},3073}, {{{86,5}},193}, {{{192,5}},24577}
|
||||
};
|
||||
static const code lenfix[512] = {
|
||||
{96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
|
||||
{0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
|
||||
{0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
|
||||
{0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
|
||||
{0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
|
||||
{21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
|
||||
{0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
|
||||
{0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
|
||||
{18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
|
||||
{0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
|
||||
{0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
|
||||
{0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
|
||||
{20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
|
||||
{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
|
||||
{0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
|
||||
{0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
|
||||
{16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
|
||||
{0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
|
||||
{0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
|
||||
{0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
|
||||
{0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
|
||||
{0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
|
||||
{0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
|
||||
{0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
|
||||
{17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
|
||||
{0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
|
||||
{0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
|
||||
{0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
|
||||
{19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
|
||||
{0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
|
||||
{0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
|
||||
{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
|
||||
{16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
|
||||
{0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
|
||||
{0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
|
||||
{0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
|
||||
{0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
|
||||
{20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
|
||||
{0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
|
||||
{0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
|
||||
{17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
|
||||
{0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
|
||||
{0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
|
||||
{0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
|
||||
{20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
|
||||
{0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
|
||||
{0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
|
||||
{0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
|
||||
{16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
|
||||
{0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
|
||||
{0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
|
||||
{0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
|
||||
{0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
|
||||
{0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
|
||||
{0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
|
||||
{0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
|
||||
{16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
|
||||
{0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
|
||||
{0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
|
||||
{0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
|
||||
{19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
|
||||
{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
|
||||
{0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
|
||||
{0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
|
||||
{16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
|
||||
{0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
|
||||
{0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
|
||||
{0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
|
||||
{0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
|
||||
{64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
|
||||
{0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
|
||||
{0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
|
||||
{18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
|
||||
{0,9,255}
|
||||
};
|
||||
|
||||
static const code distfix[32] = {
|
||||
{16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
|
||||
{21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
|
||||
{18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
|
||||
{19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
|
||||
{16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
|
||||
{22,5,193},{64,5,0}
|
||||
};
|
||||
#endif
|
||||
|
|
|
|||
1796
src/gzip/inflate.c
1796
src/gzip/inflate.c
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,131 @@
|
|||
/* inflate.h -- internal inflate state definition
|
||||
* Copyright (C) 1995-2016 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
/* define NO_GZIP when compiling if you want to disable gzip header and
|
||||
trailer decoding by inflate(). NO_GZIP would be used to avoid linking in
|
||||
the crc code when it is not needed. For shared libraries, gzip decoding
|
||||
should be left enabled. */
|
||||
|
||||
#ifndef MOZI_INFLATE
|
||||
#define MOZI_INFLATE
|
||||
|
||||
#ifndef NO_GZIP
|
||||
# define GUNZIP
|
||||
#endif
|
||||
|
||||
/* Possible inflate modes between inflate() calls */
|
||||
typedef enum {
|
||||
HEAD = 16180, /* i: waiting for magic header */
|
||||
FLAGS, /* i: waiting for method and flags (gzip) */
|
||||
TIME, /* i: waiting for modification time (gzip) */
|
||||
OS, /* i: waiting for extra flags and operating system (gzip) */
|
||||
EXLEN, /* i: waiting for extra length (gzip) */
|
||||
EXTRA, /* i: waiting for extra bytes (gzip) */
|
||||
NAME, /* i: waiting for end of file name (gzip) */
|
||||
COMMENT, /* i: waiting for end of comment (gzip) */
|
||||
HCRC, /* i: waiting for header crc (gzip) */
|
||||
DICTID, /* i: waiting for dictionary check value */
|
||||
DICT, /* waiting for inflateSetDictionary() call */
|
||||
TYPE, /* i: waiting for type bits, including last-flag bit */
|
||||
TYPEDO, /* i: same, but skip check to exit inflate on new block */
|
||||
STORED, /* i: waiting for stored size (length and complement) */
|
||||
COPY_, /* i/o: same as COPY below, but only first time in */
|
||||
COPY, /* i/o: waiting for input or output to copy stored block */
|
||||
TABLE, /* i: waiting for dynamic block table lengths */
|
||||
LENLENS, /* i: waiting for code length code lengths */
|
||||
CODELENS, /* i: waiting for length/lit and distance code lengths */
|
||||
LEN_, /* i: same as LEN below, but only first time in */
|
||||
LEN, /* i: waiting for length/lit/eob code */
|
||||
LENEXT, /* i: waiting for length extra bits */
|
||||
DIST, /* i: waiting for distance code */
|
||||
DISTEXT, /* i: waiting for distance extra bits */
|
||||
MATCH, /* o: waiting for output space to copy string */
|
||||
LIT, /* o: waiting for output space to write literal */
|
||||
CHECK, /* i: waiting for 32-bit check value */
|
||||
LENGTH, /* i: waiting for 32-bit length (gzip) */
|
||||
DONE, /* finished check, done -- remain here until reset */
|
||||
BAD, /* got a data error -- remain here until reset */
|
||||
MEM, /* got an inflate() memory error -- remain here until reset */
|
||||
SYNC /* looking for synchronization bytes to restart inflate() */
|
||||
} inflate_mode;
|
||||
|
||||
/*
|
||||
State transitions between above modes -
|
||||
|
||||
(most modes can go to BAD or MEM on error -- not shown for clarity)
|
||||
|
||||
Process header:
|
||||
HEAD -> (gzip) or (zlib) or (raw)
|
||||
(gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
|
||||
HCRC -> TYPE
|
||||
(zlib) -> DICTID or TYPE
|
||||
DICTID -> DICT -> TYPE
|
||||
(raw) -> TYPEDO
|
||||
Read deflate blocks:
|
||||
TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
|
||||
STORED -> COPY_ -> COPY -> TYPE
|
||||
TABLE -> LENLENS -> CODELENS -> LEN_
|
||||
LEN_ -> LEN
|
||||
Read deflate codes in fixed or dynamic block:
|
||||
LEN -> LENEXT or LIT or TYPE
|
||||
LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
|
||||
LIT -> LEN
|
||||
Process trailer:
|
||||
CHECK -> LENGTH -> DONE
|
||||
*/
|
||||
|
||||
/* State maintained between inflate() calls -- approximately 7K bytes, not
|
||||
including the allocated sliding window, which is up to 32K bytes. */
|
||||
struct inflate_state {
|
||||
z_streamp strm; /* pointer back to this zlib stream */
|
||||
inflate_mode mode; /* current inflate mode */
|
||||
int last; /* true if processing last block */
|
||||
int wrap; /* bit 0 true for zlib, bit 1 true for gzip,
|
||||
bit 2 true to validate check value */
|
||||
int havedict; /* true if dictionary provided */
|
||||
int flags; /* gzip header method and flags (0 if zlib) */
|
||||
unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */
|
||||
unsigned long check; /* protected copy of check value */
|
||||
unsigned long total; /* protected copy of output count */
|
||||
gz_headerp head; /* where to save gzip header information */
|
||||
/* sliding window */
|
||||
unsigned wbits; /* log base 2 of requested window size */
|
||||
unsigned wsize; /* window size or zero if not using window */
|
||||
unsigned whave; /* valid bytes in the window */
|
||||
unsigned wnext; /* window write index */
|
||||
unsigned char FAR *window; /* allocated sliding window, if needed */
|
||||
/* bit accumulator */
|
||||
unsigned long hold; /* input bit accumulator */
|
||||
unsigned bits; /* number of bits in "in" */
|
||||
/* for string and stored block copying */
|
||||
unsigned length; /* literal or length of data to copy */
|
||||
unsigned offset; /* distance back to copy string from */
|
||||
/* for table and code decoding */
|
||||
unsigned extra; /* extra bits needed */
|
||||
/* fixed and dynamic code tables */
|
||||
code const FAR *lencode; /* starting table for length/literal codes */
|
||||
code const FAR *distcode; /* starting table for distance codes */
|
||||
unsigned lenbits; /* index bits for lencode */
|
||||
unsigned distbits; /* index bits for distcode */
|
||||
/* dynamic table building */
|
||||
unsigned ncode; /* number of code length code lengths */
|
||||
unsigned nlen; /* number of length code lengths */
|
||||
unsigned ndist; /* number of distance code lengths */
|
||||
unsigned have; /* number of code lengths in lens[] */
|
||||
code FAR *next; /* next available space in codes[] */
|
||||
unsigned short lens[320]; /* temporary storage for code lengths */
|
||||
unsigned short work[288]; /* work area for code table building */
|
||||
code codes[ENOUGH]; /* space for code tables */
|
||||
int sane; /* if false, allow invalid distance too far */
|
||||
int back; /* bits back of last unprocessed length/lit */
|
||||
unsigned was; /* initial length of match */
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
@ -1,20 +1,15 @@
|
|||
/* inftrees.c -- generate Huffman trees for efficient decoding
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* Copyright (C) 1995-2017 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "inftrees.h"
|
||||
|
||||
#if !defined(BUILDFIXED) && !defined(STDC)
|
||||
# define BUILDFIXED /* non ANSI compilers may not accept inffixed.h */
|
||||
#endif
|
||||
#define MAXBITS 15
|
||||
|
||||
|
||||
#if 0
|
||||
local const char inflate_copyright[] =
|
||||
" inflate 1.1.4 Copyright 1995-2002 Mark Adler ";
|
||||
#endif
|
||||
const char inflate_copyright[] =
|
||||
" inflate 1.2.11 Copyright 1995-2017 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
|
||||
|
|
@ -22,447 +17,288 @@ local const char inflate_copyright[] =
|
|||
copyright string in the executable of your product.
|
||||
*/
|
||||
|
||||
/* simplify the use of the inflate_huft type with some defines */
|
||||
#define exop word.what.Exop
|
||||
#define bits word.what.Bits
|
||||
|
||||
|
||||
local int huft_build OF((
|
||||
uIntf *, /* code lengths in bits */
|
||||
uInt, /* number of codes */
|
||||
uInt, /* number of "simple" codes */
|
||||
const uIntf *, /* list of base values for non-simple codes */
|
||||
const uIntf *, /* list of extra bits for non-simple codes */
|
||||
inflate_huft * FAR*,/* result: starting table */
|
||||
uIntf *, /* maximum lookup bits (returns actual) */
|
||||
inflate_huft *, /* space for trees */
|
||||
uInt *, /* hufts used in space */
|
||||
uIntf * )); /* space for values */
|
||||
|
||||
/* Tables for deflate from PKZIP's appnote.txt. */
|
||||
local const uInt cplens[31] = { /* Copy lengths for literal codes 257..285 */
|
||||
/*
|
||||
Build a set of tables to decode the provided canonical Huffman code.
|
||||
The code lengths are lens[0..codes-1]. The result starts at *table,
|
||||
whose indices are 0..2^bits-1. work is a writable array of at least
|
||||
lens shorts, which is used as a work area. type is the type of code
|
||||
to be generated, CODES, LENS, or DISTS. On return, zero is success,
|
||||
-1 is an invalid code, and +1 means that ENOUGH isn't enough. table
|
||||
on return points to the next available entry's address. bits is the
|
||||
requested root table index bits, and on return it is the actual root
|
||||
table index bits. It will differ if the request is greater than the
|
||||
longest code or if it is less than the shortest code.
|
||||
*/
|
||||
int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work)
|
||||
codetype type;
|
||||
unsigned short FAR *lens;
|
||||
unsigned codes;
|
||||
code FAR * FAR *table;
|
||||
unsigned FAR *bits;
|
||||
unsigned short FAR *work;
|
||||
{
|
||||
unsigned len; /* a code's length in bits */
|
||||
unsigned sym; /* index of code symbols */
|
||||
unsigned min, max; /* minimum and maximum code lengths */
|
||||
unsigned root; /* number of index bits for root table */
|
||||
unsigned curr; /* number of index bits for current table */
|
||||
unsigned drop; /* code bits to drop for sub-table */
|
||||
int left; /* number of prefix codes available */
|
||||
unsigned used; /* code entries in table used */
|
||||
unsigned huff; /* Huffman code */
|
||||
unsigned incr; /* for incrementing code, index */
|
||||
unsigned fill; /* index for replicating entries */
|
||||
unsigned low; /* low bits for current root entry */
|
||||
unsigned mask; /* mask for low root bits */
|
||||
code here; /* table entry for duplication */
|
||||
code FAR *next; /* next available space in table */
|
||||
const unsigned short FAR *base; /* base value table to use */
|
||||
const unsigned short FAR *extra; /* extra bits table to use */
|
||||
unsigned match; /* use base and extra for symbol >= match */
|
||||
unsigned short count[MAXBITS+1]; /* number of codes of each length */
|
||||
unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
|
||||
static const unsigned short lbase[31] = { /* Length codes 257..285 base */
|
||||
3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
|
||||
35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
|
||||
/* see note #13 above about 258 */
|
||||
local const uInt cplext[31] = { /* Extra bits for literal codes 257..285 */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
|
||||
3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112}; /* 112==invalid */
|
||||
local const uInt cpdist[30] = { /* Copy offsets for distance codes 0..29 */
|
||||
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, 77, 202};
|
||||
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,
|
||||
8193, 12289, 16385, 24577};
|
||||
local const uInt cpdext[30] = { /* Extra bits for distance codes */
|
||||
0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
|
||||
7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
|
||||
12, 12, 13, 13};
|
||||
8193, 12289, 16385, 24577, 0, 0};
|
||||
static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
|
||||
16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
|
||||
23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
|
||||
28, 28, 29, 29, 64, 64};
|
||||
|
||||
/*
|
||||
Huffman code decoding is performed using a multi-level table lookup.
|
||||
The fastest way to decode is to simply build a lookup table whose
|
||||
size is determined by the longest code. However, the time it takes
|
||||
to build this table can also be a factor if the data being decoded
|
||||
is not very long. The most common codes are necessarily the
|
||||
shortest codes, so those codes dominate the decoding time, and hence
|
||||
the speed. The idea is you can have a shorter table that decodes the
|
||||
shorter, more probable codes, and then point to subsidiary tables for
|
||||
the longer codes. The time it costs to decode the longer codes is
|
||||
then traded against the time it takes to make longer tables.
|
||||
/*
|
||||
Process a set of code lengths to create a canonical Huffman code. The
|
||||
code lengths are lens[0..codes-1]. Each length corresponds to the
|
||||
symbols 0..codes-1. The Huffman code is generated by first sorting the
|
||||
symbols by length from short to long, and retaining the symbol order
|
||||
for codes with equal lengths. Then the code starts with all zero bits
|
||||
for the first code of the shortest length, and the codes are integer
|
||||
increments for the same length, and zeros are appended as the length
|
||||
increases. For the deflate format, these bits are stored backwards
|
||||
from their more natural integer increment ordering, and so when the
|
||||
decoding tables are built in the large loop below, the integer codes
|
||||
are incremented backwards.
|
||||
|
||||
This results of this trade are in the variables lbits and dbits
|
||||
below. lbits is the number of bits the first level table for literal/
|
||||
length codes can decode in one step, and dbits is the same thing for
|
||||
the distance codes. Subsequent tables are also less than or equal to
|
||||
those sizes. These values may be adjusted either when all of the
|
||||
codes are shorter than that, in which case the longest code length in
|
||||
bits is used, or when the shortest code is *longer* than the requested
|
||||
table size, in which case the length of the shortest code in bits is
|
||||
used.
|
||||
This routine assumes, but does not check, that all of the entries in
|
||||
lens[] are in the range 0..MAXBITS. The caller must assure this.
|
||||
1..MAXBITS is interpreted as that code length. zero means that that
|
||||
symbol does not occur in this code.
|
||||
|
||||
There are two different values for the two tables, since they code a
|
||||
different number of possibilities each. The literal/length table
|
||||
codes 286 possible values, or in a flat code, a little over eight
|
||||
bits. The distance table codes 30 possible values, or a little less
|
||||
than five bits, flat. The optimum values for speed end up being
|
||||
about one bit more than those, so lbits is 8+1 and dbits is 5+1.
|
||||
The optimum values may differ though from machine to machine, and
|
||||
possibly even between compilers. Your mileage may vary.
|
||||
*/
|
||||
The codes are sorted by computing a count of codes for each length,
|
||||
creating from that a table of starting indices for each length in the
|
||||
sorted table, and then entering the symbols in order in the sorted
|
||||
table. The sorted table is work[], with that space being provided by
|
||||
the caller.
|
||||
|
||||
The length counts are used for other purposes as well, i.e. finding
|
||||
the minimum and maximum length codes, determining if there are any
|
||||
codes at all, checking for a valid set of lengths, and looking ahead
|
||||
at length counts to determine sub-table sizes when building the
|
||||
decoding tables.
|
||||
*/
|
||||
|
||||
/* If BMAX needs to be larger than 16, then h and x[] should be uLong. */
|
||||
#define BMAX 15 /* maximum bit length of any code */
|
||||
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
|
||||
for (len = 0; len <= MAXBITS; len++)
|
||||
count[len] = 0;
|
||||
for (sym = 0; sym < codes; sym++)
|
||||
count[lens[sym]]++;
|
||||
|
||||
local int huft_build( /* b, n, s, d, e, t, m, hp, hn, v) */
|
||||
uIntf *b, /* code lengths in bits (all assumed <= BMAX) */
|
||||
uInt n, /* number of codes (assumed <= 288) */
|
||||
uInt s, /* number of simple-valued codes (0..s-1) */
|
||||
const uIntf *d, /* list of base values for non-simple codes */
|
||||
const uIntf *e, /* list of extra bits for non-simple codes */
|
||||
inflate_huft * FAR *t, /* result: starting table */
|
||||
uIntf *m, /* maximum lookup bits, returns actual */
|
||||
inflate_huft *hp, /* space for trees */
|
||||
uInt *hn, /* hufts used in space */
|
||||
uIntf *v /* working area: values in order of bit length */
|
||||
/* Given a list of code lengths and a maximum table size, make a set of
|
||||
tables to decode that set of codes. Return Z_OK on success, Z_BUF_ERROR
|
||||
if the given code set is incomplete (the tables are still built in this
|
||||
case), or Z_DATA_ERROR if the input is invalid. */
|
||||
)
|
||||
{
|
||||
/* bound code lengths, force root to be within code lengths */
|
||||
root = *bits;
|
||||
for (max = MAXBITS; max >= 1; max--)
|
||||
if (count[max] != 0) break;
|
||||
if (root > max) root = max;
|
||||
if (max == 0) { /* no symbols to code at all */
|
||||
here.op = (unsigned char)64; /* invalid code marker */
|
||||
here.bits = (unsigned char)1;
|
||||
here.val = (unsigned short)0;
|
||||
*(*table)++ = here; /* make a table to force an error */
|
||||
*(*table)++ = here;
|
||||
*bits = 1;
|
||||
return 0; /* no symbols, but wait for decoding to report error */
|
||||
}
|
||||
for (min = 1; min < max; min++)
|
||||
if (count[min] != 0) break;
|
||||
if (root < min) root = min;
|
||||
|
||||
uInt a; /* counter for codes of length k */
|
||||
uInt c[BMAX+1]; /* bit length count table */
|
||||
uInt f; /* i repeats in table every f entries */
|
||||
int g; /* maximum code length */
|
||||
int h; /* table level */
|
||||
uInt i; /* counter, current code */
|
||||
uInt j; /* counter */
|
||||
int k; /* number of bits in current code */
|
||||
int l; /* bits per table (returned in m) */
|
||||
uInt mask; /* (1 << w) - 1, to avoid cc -O bug on HP */
|
||||
uIntf *p; /* pointer into c[], b[], or v[] */
|
||||
inflate_huft *q; /* points to current table */
|
||||
struct inflate_huft_s r; /* table entry for structure assignment */
|
||||
inflate_huft *u[BMAX]; /* table stack */
|
||||
int w; /* bits before this table == (l * h) */
|
||||
uInt x[BMAX+1]; /* bit offsets, then code stack */
|
||||
uIntf *xp; /* pointer into x */
|
||||
int y; /* number of dummy codes added */
|
||||
uInt z; /* number of entries in current table */
|
||||
/* check for an over-subscribed or incomplete set of lengths */
|
||||
left = 1;
|
||||
for (len = 1; len <= MAXBITS; len++) {
|
||||
left <<= 1;
|
||||
left -= count[len];
|
||||
if (left < 0) return -1; /* over-subscribed */
|
||||
}
|
||||
if (left > 0 && (type == CODES || max != 1))
|
||||
return -1; /* incomplete set */
|
||||
|
||||
/* generate offsets into symbol table for each length for sorting */
|
||||
offs[1] = 0;
|
||||
for (len = 1; len < MAXBITS; len++)
|
||||
offs[len + 1] = offs[len] + count[len];
|
||||
|
||||
/* Make compiler happy */
|
||||
r.base = 0;
|
||||
/* sort symbols by length, by symbol order within each length */
|
||||
for (sym = 0; sym < codes; sym++)
|
||||
if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
|
||||
|
||||
/* Generate counts for each bit length */
|
||||
p = c;
|
||||
#define C0 *p++ = 0;
|
||||
#define C2 C0 C0 C0 C0
|
||||
#define C4 C2 C2 C2 C2
|
||||
C4 /* clear c[]--assume BMAX+1 is 16 */
|
||||
p = b; i = n;
|
||||
do {
|
||||
c[*p++]++; /* assume all entries <= BMAX */
|
||||
} while (--i);
|
||||
if (c[0] == n) /* null input--all zero length codes */
|
||||
{
|
||||
*t = (inflate_huft *)Z_NULL;
|
||||
*m = 0;
|
||||
return Z_OK;
|
||||
}
|
||||
/*
|
||||
Create and fill in decoding tables. In this loop, the table being
|
||||
filled is at next and has curr index bits. The code being used is huff
|
||||
with length len. That code is converted to an index by dropping drop
|
||||
bits off of the bottom. For codes where len is less than drop + curr,
|
||||
those top drop + curr - len bits are incremented through all values to
|
||||
fill the table with replicated entries.
|
||||
|
||||
root is the number of index bits for the root table. When len exceeds
|
||||
root, sub-tables are created pointed to by the root entry with an index
|
||||
of the low root bits of huff. This is saved in low to check for when a
|
||||
new sub-table should be started. drop is zero when the root table is
|
||||
being filled, and drop is root when sub-tables are being filled.
|
||||
|
||||
/* Find minimum and maximum length, bound *m by those */
|
||||
l = *m;
|
||||
for (j = 1; j <= BMAX; j++)
|
||||
if (c[j])
|
||||
break;
|
||||
k = j; /* minimum code length */
|
||||
if ((uInt)l < j)
|
||||
l = j;
|
||||
for (i = BMAX; i; i--)
|
||||
if (c[i])
|
||||
break;
|
||||
g = i; /* maximum code length */
|
||||
if ((uInt)l > i)
|
||||
l = i;
|
||||
*m = l;
|
||||
When a new sub-table is needed, it is necessary to look ahead in the
|
||||
code lengths to determine what size sub-table is needed. The length
|
||||
counts are used for this, and so count[] is decremented as codes are
|
||||
entered in the tables.
|
||||
|
||||
used keeps track of how many table entries have been allocated from the
|
||||
provided *table space. It is checked for LENS and DIST tables against
|
||||
the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
|
||||
the initial root table size constants. See the comments in inftrees.h
|
||||
for more information.
|
||||
|
||||
/* Adjust last length count to fill out codes, if needed */
|
||||
for (y = 1 << j; j < i; j++, y <<= 1)
|
||||
if ((y -= c[j]) < 0)
|
||||
return Z_DATA_ERROR;
|
||||
if ((y -= c[i]) < 0)
|
||||
return Z_DATA_ERROR;
|
||||
c[i] += y;
|
||||
sym increments through all symbols, and the loop terminates when
|
||||
all codes of length max, i.e. all codes, have been processed. This
|
||||
routine permits incomplete codes, so another loop after this one fills
|
||||
in the rest of the decoding tables with invalid code markers.
|
||||
*/
|
||||
|
||||
/* set up for code type */
|
||||
switch (type) {
|
||||
case CODES:
|
||||
base = extra = work; /* dummy value--not used */
|
||||
match = 20;
|
||||
break;
|
||||
case LENS:
|
||||
base = lbase;
|
||||
extra = lext;
|
||||
match = 257;
|
||||
break;
|
||||
default: /* DISTS */
|
||||
base = dbase;
|
||||
extra = dext;
|
||||
match = 0;
|
||||
}
|
||||
|
||||
/* Generate starting offsets into the value table for each length */
|
||||
x[1] = j = 0;
|
||||
p = c + 1; xp = x + 2;
|
||||
while (--i) { /* note that i == g from above */
|
||||
*xp++ = (j += *p++);
|
||||
}
|
||||
/* initialize state for loop */
|
||||
huff = 0; /* starting code */
|
||||
sym = 0; /* starting code symbol */
|
||||
len = min; /* starting code length */
|
||||
next = *table; /* current table to fill in */
|
||||
curr = root; /* current table index bits */
|
||||
drop = 0; /* current bits to drop from code for index */
|
||||
low = (unsigned)(-1); /* trigger new sub-table when len > root */
|
||||
used = 1U << root; /* use root table entries */
|
||||
mask = used - 1; /* mask for comparing low */
|
||||
|
||||
/* check available table space */
|
||||
if ((type == LENS && used > ENOUGH_LENS) ||
|
||||
(type == DISTS && used > ENOUGH_DISTS))
|
||||
return 1;
|
||||
|
||||
/* Make a table of values in order of bit lengths */
|
||||
p = b; i = 0;
|
||||
do {
|
||||
if ((j = *p++) != 0)
|
||||
v[x[j]++] = i;
|
||||
} while (++i < n);
|
||||
n = x[g]; /* set n to length of v */
|
||||
|
||||
|
||||
/* Generate the Huffman codes and for each, make the table entries */
|
||||
x[0] = i = 0; /* first Huffman code is zero */
|
||||
p = v; /* grab values in bit order */
|
||||
h = -1; /* no tables yet--level -1 */
|
||||
w = -l; /* bits decoded == (l * h) */
|
||||
u[0] = (inflate_huft *)Z_NULL; /* just to keep compilers happy */
|
||||
q = (inflate_huft *)Z_NULL; /* ditto */
|
||||
z = 0; /* ditto */
|
||||
|
||||
/* go through the bit lengths (k already is bits in shortest code) */
|
||||
for (; k <= g; k++)
|
||||
{
|
||||
a = c[k];
|
||||
while (a--)
|
||||
{
|
||||
/* here i is the Huffman code of length k bits for value *p */
|
||||
/* make tables up to required level */
|
||||
while (k > w + l)
|
||||
{
|
||||
h++;
|
||||
w += l; /* previous table always l bits */
|
||||
|
||||
/* compute minimum size table less than or equal to l bits */
|
||||
z = g - w;
|
||||
z = z > (uInt)l ? (uInt)l : z; /* table size upper limit */
|
||||
if ((f = 1 << (j = k - w)) > a + 1) /* try a k-w bit table */
|
||||
{ /* too few codes for k-w bit table */
|
||||
f -= a + 1; /* deduct codes from patterns left */
|
||||
xp = c + k;
|
||||
if (j < z)
|
||||
while (++j < z) /* try smaller tables up to z bits */
|
||||
{
|
||||
if ((f <<= 1) <= *++xp)
|
||||
break; /* enough codes to use up j bits */
|
||||
f -= *xp; /* else deduct codes from patterns */
|
||||
}
|
||||
/* process all codes and make table entries */
|
||||
for (;;) {
|
||||
/* create table entry */
|
||||
here.bits = (unsigned char)(len - drop);
|
||||
if (work[sym] + 1U < match) {
|
||||
here.op = (unsigned char)0;
|
||||
here.val = work[sym];
|
||||
}
|
||||
else if (work[sym] >= match) {
|
||||
here.op = (unsigned char)(extra[work[sym] - match]);
|
||||
here.val = base[work[sym] - match];
|
||||
}
|
||||
else {
|
||||
here.op = (unsigned char)(32 + 64); /* end of block */
|
||||
here.val = 0;
|
||||
}
|
||||
z = 1 << j; /* table entries for j-bit table */
|
||||
|
||||
/* allocate new table */
|
||||
if (*hn + z > MANY) /* (note: doesn't matter for fixed) */
|
||||
return Z_DATA_ERROR; /* overflow of MANY */
|
||||
u[h] = q = hp + *hn;
|
||||
*hn += z;
|
||||
/* replicate for those indices with low len bits equal to huff */
|
||||
incr = 1U << (len - drop);
|
||||
fill = 1U << curr;
|
||||
min = fill; /* save offset to next table */
|
||||
do {
|
||||
fill -= incr;
|
||||
next[(huff >> drop) + fill] = here;
|
||||
} while (fill != 0);
|
||||
|
||||
/* connect to last table, if there is one */
|
||||
if (h)
|
||||
{
|
||||
x[h] = i; /* save pattern for backing up */
|
||||
r.bits = (Byte)l; /* bits to dump before this table */
|
||||
r.exop = (Byte)j; /* bits in this table */
|
||||
j = i >> (w - l);
|
||||
r.base = (uInt)(q - u[h-1] - j); /* offset to this table */
|
||||
u[h-1][j] = r; /* connect to last table */
|
||||
/* backwards increment the len-bit code huff */
|
||||
incr = 1U << (len - 1);
|
||||
while (huff & incr)
|
||||
incr >>= 1;
|
||||
if (incr != 0) {
|
||||
huff &= incr - 1;
|
||||
huff += incr;
|
||||
}
|
||||
else
|
||||
*t = q; /* first table is returned result */
|
||||
}
|
||||
huff = 0;
|
||||
|
||||
/* set up table entry in r */
|
||||
r.bits = (Byte)(k - w);
|
||||
if (p >= v + n)
|
||||
r.exop = 128 + 64; /* out of values--invalid code */
|
||||
else if (*p < s)
|
||||
{
|
||||
r.exop = (Byte)(*p < 256 ? 0 : 32 + 64); /* 256 is end-of-block */
|
||||
r.base = *p++; /* simple code is just the value */
|
||||
}
|
||||
else
|
||||
{
|
||||
r.exop = (Byte)(e[*p - s] + 16 + 64);/* non-simple--look up in lists */
|
||||
r.base = d[*p++ - s];
|
||||
}
|
||||
/* go to next symbol, update count, len */
|
||||
sym++;
|
||||
if (--(count[len]) == 0) {
|
||||
if (len == max) break;
|
||||
len = lens[work[sym]];
|
||||
}
|
||||
|
||||
/* fill code-like entries with r */
|
||||
f = 1 << (k - w);
|
||||
for (j = i >> w; j < z; j += f)
|
||||
q[j] = r;
|
||||
/* create new sub-table if needed */
|
||||
if (len > root && (huff & mask) != low) {
|
||||
/* if first time, transition to sub-tables */
|
||||
if (drop == 0)
|
||||
drop = root;
|
||||
|
||||
/* backwards increment the k-bit code i */
|
||||
for (j = 1 << (k - 1); i & j; j >>= 1)
|
||||
i ^= j;
|
||||
i ^= j;
|
||||
/* increment past last table */
|
||||
next += min; /* here min is 1 << curr */
|
||||
|
||||
/* backup over finished tables */
|
||||
mask = (1 << w) - 1; /* needed on HP, cc -O bug */
|
||||
while ((i & mask) != x[h])
|
||||
{
|
||||
h--; /* don't need to update q */
|
||||
w -= l;
|
||||
mask = (1 << w) - 1;
|
||||
}
|
||||
/* determine length of next table */
|
||||
curr = len - drop;
|
||||
left = (int)(1 << curr);
|
||||
while (curr + drop < max) {
|
||||
left -= count[curr + drop];
|
||||
if (left <= 0) break;
|
||||
curr++;
|
||||
left <<= 1;
|
||||
}
|
||||
|
||||
/* check for enough space */
|
||||
used += 1U << curr;
|
||||
if ((type == LENS && used > ENOUGH_LENS) ||
|
||||
(type == DISTS && used > ENOUGH_DISTS))
|
||||
return 1;
|
||||
|
||||
/* point entry in root table to sub-table */
|
||||
low = huff & mask;
|
||||
(*table)[low].op = (unsigned char)curr;
|
||||
(*table)[low].bits = (unsigned char)root;
|
||||
(*table)[low].val = (unsigned short)(next - *table);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* fill in remaining table entry if code is incomplete (guaranteed to have
|
||||
at most one remaining entry, since if the code is incomplete, the
|
||||
maximum code length that was allowed to get this far is one bit) */
|
||||
if (huff != 0) {
|
||||
here.op = (unsigned char)64; /* invalid code marker */
|
||||
here.bits = (unsigned char)(len - drop);
|
||||
here.val = (unsigned short)0;
|
||||
next[huff] = here;
|
||||
}
|
||||
|
||||
/* Return Z_BUF_ERROR if we were given an incomplete table */
|
||||
return y != 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
|
||||
}
|
||||
|
||||
|
||||
local int inflate_trees_bits( /* c, bb, tb, hp, z) */
|
||||
uIntf *c, /* 19 code lengths */
|
||||
uIntf *bb, /* bits tree desired/actual depth */
|
||||
inflate_huft * FAR *tb, /* bits tree result */
|
||||
inflate_huft *hp, /* space for trees */
|
||||
z_streamp z /* for messages */
|
||||
)
|
||||
{
|
||||
int r;
|
||||
uInt hn = 0; /* hufts used in space */
|
||||
uIntf *v; /* work area for huft_build */
|
||||
|
||||
if ((v = (uIntf*)ZALLOC(z, 19, sizeof(uInt))) == Z_NULL)
|
||||
return Z_MEM_ERROR;
|
||||
r = huft_build(c, 19, 19, (uIntf*)Z_NULL, (uIntf*)Z_NULL,
|
||||
tb, bb, hp, &hn, v);
|
||||
if (r == Z_DATA_ERROR)
|
||||
z->msg = (char*)"oversubscribed dynamic bit lengths tree";
|
||||
else if (r == Z_BUF_ERROR || *bb == 0)
|
||||
{
|
||||
z->msg = (char*)"incomplete dynamic bit lengths tree";
|
||||
r = Z_DATA_ERROR;
|
||||
}
|
||||
ZFREE(z, v);
|
||||
return r;
|
||||
}
|
||||
|
||||
|
||||
local int inflate_trees_dynamic( /* nl, nd, c, bl, bd, tl, td, hp, z) */
|
||||
uInt nl, /* number of literal/length codes */
|
||||
uInt nd, /* number of distance codes */
|
||||
uIntf *c, /* that many (total) code lengths */
|
||||
uIntf *bl, /* literal desired/actual bit depth */
|
||||
uIntf *bd, /* distance desired/actual bit depth */
|
||||
inflate_huft * FAR *tl, /* literal/length tree result */
|
||||
inflate_huft * FAR *td, /* distance tree result */
|
||||
inflate_huft *hp, /* space for trees */
|
||||
z_streamp z /* for messages */
|
||||
)
|
||||
{
|
||||
int r;
|
||||
uInt hn = 0; /* hufts used in space */
|
||||
uIntf *v; /* work area for huft_build */
|
||||
|
||||
/* allocate work area */
|
||||
if ((v = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
|
||||
return Z_MEM_ERROR;
|
||||
|
||||
/* build literal/length tree */
|
||||
r = huft_build(c, nl, 257, cplens, cplext, tl, bl, hp, &hn, v);
|
||||
if (r != Z_OK || *bl == 0)
|
||||
{
|
||||
if (r == Z_DATA_ERROR)
|
||||
z->msg = (char*)"oversubscribed literal/length tree";
|
||||
else if (r != Z_MEM_ERROR)
|
||||
{
|
||||
z->msg = (char*)"incomplete literal/length tree";
|
||||
r = Z_DATA_ERROR;
|
||||
}
|
||||
ZFREE(z, v);
|
||||
return r;
|
||||
}
|
||||
|
||||
/* build distance tree */
|
||||
r = huft_build(c + nl, nd, 0, cpdist, cpdext, td, bd, hp, &hn, v);
|
||||
if (r != Z_OK || (*bd == 0 && nl > 257))
|
||||
{
|
||||
if (r == Z_DATA_ERROR)
|
||||
z->msg = (char*)"oversubscribed distance tree";
|
||||
else if (r == Z_BUF_ERROR) {
|
||||
#if 0
|
||||
{
|
||||
#endif
|
||||
#ifdef PKZIP_BUG_WORKAROUND
|
||||
r = Z_OK;
|
||||
}
|
||||
#else
|
||||
z->msg = (char*)"incomplete distance tree";
|
||||
r = Z_DATA_ERROR;
|
||||
}
|
||||
else if (r != Z_MEM_ERROR)
|
||||
{
|
||||
z->msg = (char*)"empty distance tree with lengths";
|
||||
r = Z_DATA_ERROR;
|
||||
}
|
||||
ZFREE(z, v);
|
||||
return r;
|
||||
#endif
|
||||
}
|
||||
|
||||
/* done */
|
||||
ZFREE(z, v);
|
||||
return Z_OK;
|
||||
}
|
||||
|
||||
|
||||
/* build fixed tables only once--keep them here */
|
||||
#ifdef BUILDFIXED
|
||||
local int fixed_built = 0;
|
||||
#define FIXEDH 544 /* number of hufts used by fixed tables */
|
||||
local inflate_huft fixed_mem[FIXEDH];
|
||||
local uInt fixed_bl;
|
||||
local uInt fixed_bd;
|
||||
local inflate_huft *fixed_tl;
|
||||
local inflate_huft *fixed_td;
|
||||
#else
|
||||
#include "inffixed.h"
|
||||
#endif
|
||||
|
||||
|
||||
local int inflate_trees_fixed( /* bl, bd, tl, td, z) */
|
||||
uIntf *bl, /* literal desired/actual bit depth */
|
||||
uIntf *bd, /* distance desired/actual bit depth */
|
||||
const inflate_huft * FAR *tl, /* literal/length tree result */
|
||||
const inflate_huft * FAR *td, /* distance tree result */
|
||||
z_streamp z /* for memory allocation */
|
||||
)
|
||||
{
|
||||
#ifdef BUILDFIXED
|
||||
/* build fixed tables if not already */
|
||||
if (!fixed_built)
|
||||
{
|
||||
int k; /* temporary variable */
|
||||
uInt f = 0; /* number of hufts used in fixed_mem */
|
||||
uIntf *c; /* length list for huft_build */
|
||||
uIntf *v; /* work area for huft_build */
|
||||
|
||||
/* allocate memory */
|
||||
if ((c = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
|
||||
return Z_MEM_ERROR;
|
||||
if ((v = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
|
||||
{
|
||||
ZFREE(z, c);
|
||||
return Z_MEM_ERROR;
|
||||
}
|
||||
|
||||
/* literal table */
|
||||
for (k = 0; k < 144; k++)
|
||||
c[k] = 8;
|
||||
for (; k < 256; k++)
|
||||
c[k] = 9;
|
||||
for (; k < 280; k++)
|
||||
c[k] = 7;
|
||||
for (; k < 288; k++)
|
||||
c[k] = 8;
|
||||
fixed_bl = 9;
|
||||
huft_build(c, 288, 257, cplens, cplext, &fixed_tl, &fixed_bl,
|
||||
fixed_mem, &f, v);
|
||||
|
||||
/* distance table */
|
||||
for (k = 0; k < 30; k++)
|
||||
c[k] = 5;
|
||||
fixed_bd = 5;
|
||||
huft_build(c, 30, 0, cpdist, cpdext, &fixed_td, &fixed_bd,
|
||||
fixed_mem, &f, v);
|
||||
|
||||
/* done */
|
||||
ZFREE(z, v);
|
||||
ZFREE(z, c);
|
||||
fixed_built = 1;
|
||||
}
|
||||
#else
|
||||
FT_UNUSED(z);
|
||||
#endif
|
||||
*bl = fixed_bl;
|
||||
*bd = fixed_bd;
|
||||
*tl = fixed_tl;
|
||||
*td = fixed_td;
|
||||
return Z_OK;
|
||||
/* set return parameters */
|
||||
*table += used;
|
||||
*bits = root;
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* inftrees.h -- header to use inftrees.c
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* Copyright (C) 1995-2005, 2010 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
|
|
@ -8,56 +8,59 @@
|
|||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
/* Huffman code lookup table entry--this entry is four bytes for machines
|
||||
that have 16-bit pointers (e.g. PC's in the small or medium model). */
|
||||
/* Structure for decoding tables. Each entry provides either the
|
||||
information needed to do the operation requested by the code that
|
||||
indexed that table entry, or it provides a pointer to another
|
||||
table that indexes more bits of the code. op indicates whether
|
||||
the entry is a pointer to another table, a literal, a length or
|
||||
distance, an end-of-block, or an invalid code. For a table
|
||||
pointer, the low four bits of op is the number of index bits of
|
||||
that table. For a length or distance, the low four bits of op
|
||||
is the number of extra bits to get after the code. bits is
|
||||
the number of bits in this code or part of the code to drop off
|
||||
of the bit buffer. val is the actual byte to output in the case
|
||||
of a literal, the base length or distance, or the offset from
|
||||
the current table to the next table. Each entry is four bytes. */
|
||||
#ifndef Z_INFTREES_H
|
||||
#define Z_INFTREES_H
|
||||
|
||||
#ifndef _INFTREES_H
|
||||
#define _INFTREES_H
|
||||
typedef struct {
|
||||
unsigned char op; /* operation, extra bits, table bits */
|
||||
unsigned char bits; /* bits in this part of the code */
|
||||
unsigned short val; /* offset in table or code value */
|
||||
} code;
|
||||
|
||||
typedef struct inflate_huft_s FAR inflate_huft;
|
||||
/* op values as set by inflate_table():
|
||||
00000000 - literal
|
||||
0000tttt - table link, tttt != 0 is the number of table index bits
|
||||
0001eeee - length or distance, eeee is the number of extra bits
|
||||
01100000 - end of block
|
||||
01000000 - invalid code
|
||||
*/
|
||||
|
||||
struct inflate_huft_s {
|
||||
union {
|
||||
struct {
|
||||
Byte Exop; /* number of extra bits or operation */
|
||||
Byte Bits; /* number of bits in this code or subcode */
|
||||
} what;
|
||||
uInt pad; /* pad structure to a power of 2 (4 bytes for */
|
||||
} word; /* 16-bit, 8 bytes for 32-bit int's) */
|
||||
uInt base; /* literal, length base, distance base,
|
||||
or table offset */
|
||||
};
|
||||
/* 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
|
||||
program are the number of symbols, the initial root table size, and the
|
||||
maximum bit length of a code. "enough 286 9 15" for literal/length codes
|
||||
returns returns 852, and "enough 30 6 15" for distance codes returns 592.
|
||||
The initial root table size (9 or 6) is found in the fifth argument of the
|
||||
inflate_table() calls in inflate.c and infback.c. If the root table size is
|
||||
changed, then these maximum sizes would be need to be recalculated and
|
||||
updated. */
|
||||
#define ENOUGH_LENS 852
|
||||
#define ENOUGH_DISTS 592
|
||||
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
|
||||
|
||||
/* Maximum size of dynamic tree. The maximum found in a long but non-
|
||||
exhaustive search was 1004 huft structures (850 for length/literals
|
||||
and 154 for distances, the latter actually the result of an
|
||||
exhaustive search). The actual maximum is not known, but the
|
||||
value below is more than safe. */
|
||||
#define MANY 1440
|
||||
/* Type of code to build for inflate_table() */
|
||||
typedef enum {
|
||||
CODES,
|
||||
LENS,
|
||||
DISTS
|
||||
} codetype;
|
||||
|
||||
local int inflate_trees_bits OF((
|
||||
uIntf *, /* 19 code lengths */
|
||||
uIntf *, /* bits tree desired/actual depth */
|
||||
inflate_huft * FAR *, /* bits tree result */
|
||||
inflate_huft *, /* space for trees */
|
||||
z_streamp)); /* for messages */
|
||||
|
||||
local int inflate_trees_dynamic OF((
|
||||
uInt, /* number of literal/length codes */
|
||||
uInt, /* number of distance codes */
|
||||
uIntf *, /* that many (total) code lengths */
|
||||
uIntf *, /* literal desired/actual bit depth */
|
||||
uIntf *, /* distance desired/actual bit depth */
|
||||
inflate_huft * FAR *, /* literal/length tree result */
|
||||
inflate_huft * FAR *, /* distance tree result */
|
||||
inflate_huft *, /* space for trees */
|
||||
z_streamp)); /* for messages */
|
||||
|
||||
local int inflate_trees_fixed OF((
|
||||
uIntf *, /* literal desired/actual bit depth */
|
||||
uIntf *, /* distance desired/actual bit depth */
|
||||
const inflate_huft * FAR *, /* literal/length tree result */
|
||||
const inflate_huft * FAR *, /* distance tree result */
|
||||
z_streamp)); /* for memory allocation */
|
||||
|
||||
#endif /* _INFTREES_H */
|
||||
int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,
|
||||
unsigned codes, code FAR * FAR *table,
|
||||
unsigned FAR *bits, unsigned short FAR *work));
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -1,86 +0,0 @@
|
|||
/* inflate_util.c -- data and routines common to blocks and codes
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "infblock.h"
|
||||
#include "inftrees.h"
|
||||
#include "infcodes.h"
|
||||
#include "infutil.h"
|
||||
|
||||
|
||||
/* And'ing with mask[n] masks the lower n bits */
|
||||
local const uInt inflate_mask[17] = {
|
||||
0x0000,
|
||||
0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
|
||||
0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
|
||||
};
|
||||
|
||||
|
||||
/* copy as much as possible from the sliding window to the output area */
|
||||
local int inflate_flush( /* s, z, r) */
|
||||
inflate_blocks_statef *s,
|
||||
z_streamp z,
|
||||
int r )
|
||||
{
|
||||
uInt n;
|
||||
Bytef *p;
|
||||
Bytef *q;
|
||||
|
||||
/* local copies of source and destination pointers */
|
||||
p = z->next_out;
|
||||
q = s->read;
|
||||
|
||||
/* compute number of bytes to copy as far as end of window */
|
||||
n = (uInt)((q <= s->write ? s->write : s->end) - q);
|
||||
if (n > z->avail_out) n = z->avail_out;
|
||||
if (n && r == Z_BUF_ERROR) r = Z_OK;
|
||||
|
||||
/* update counters */
|
||||
z->avail_out -= n;
|
||||
z->total_out += n;
|
||||
|
||||
/* update check information */
|
||||
if (s->checkfn != Z_NULL)
|
||||
z->adler = s->check = (*s->checkfn)(s->check, q, n);
|
||||
|
||||
/* copy as far as end of window */
|
||||
zmemcpy(p, q, n);
|
||||
p += n;
|
||||
q += n;
|
||||
|
||||
/* see if more to copy at beginning of window */
|
||||
if (q == s->end)
|
||||
{
|
||||
/* wrap pointers */
|
||||
q = s->window;
|
||||
if (s->write == s->end)
|
||||
s->write = s->window;
|
||||
|
||||
/* compute bytes to copy */
|
||||
n = (uInt)(s->write - q);
|
||||
if (n > z->avail_out) n = z->avail_out;
|
||||
if (n && r == Z_BUF_ERROR) r = Z_OK;
|
||||
|
||||
/* update counters */
|
||||
z->avail_out -= n;
|
||||
z->total_out += n;
|
||||
|
||||
/* update check information */
|
||||
if (s->checkfn != Z_NULL)
|
||||
z->adler = s->check = (*s->checkfn)(s->check, q, n);
|
||||
|
||||
/* copy */
|
||||
zmemcpy(p, q, n);
|
||||
p += n;
|
||||
q += n;
|
||||
}
|
||||
|
||||
/* update pointers */
|
||||
z->next_out = p;
|
||||
s->read = q;
|
||||
|
||||
/* done */
|
||||
return r;
|
||||
}
|
||||
|
|
@ -1,98 +0,0 @@
|
|||
/* infutil.h -- types and macros common to blocks and codes
|
||||
* Copyright (C) 1995-2002 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
#ifndef _INFUTIL_H
|
||||
#define _INFUTIL_H
|
||||
|
||||
typedef enum {
|
||||
TYPE, /* get type bits (3, including end bit) */
|
||||
LENS, /* get lengths for stored */
|
||||
STORED, /* processing stored block */
|
||||
TABLE, /* get table lengths */
|
||||
BTREE, /* get bit lengths tree for a dynamic block */
|
||||
DTREE, /* get length, distance trees for a dynamic block */
|
||||
CODES, /* processing fixed or dynamic block */
|
||||
DRY, /* output remaining window bytes */
|
||||
DONE, /* finished last block, done */
|
||||
BAD} /* got a data error--stuck here */
|
||||
inflate_block_mode;
|
||||
|
||||
/* inflate blocks semi-private state */
|
||||
struct inflate_blocks_state {
|
||||
|
||||
/* mode */
|
||||
inflate_block_mode mode; /* current inflate_block mode */
|
||||
|
||||
/* mode dependent information */
|
||||
union {
|
||||
uInt left; /* if STORED, bytes left to copy */
|
||||
struct {
|
||||
uInt table; /* table lengths (14 bits) */
|
||||
uInt index; /* index into blens (or border) */
|
||||
uIntf *blens; /* bit lengths of codes */
|
||||
uInt bb; /* bit length tree depth */
|
||||
inflate_huft *tb; /* bit length decoding tree */
|
||||
} trees; /* if DTREE, decoding info for trees */
|
||||
struct {
|
||||
inflate_codes_statef
|
||||
*codes;
|
||||
} decode; /* if CODES, current state */
|
||||
} sub; /* submode */
|
||||
uInt last; /* true if this block is the last block */
|
||||
|
||||
/* mode independent information */
|
||||
uInt bitk; /* bits in bit buffer */
|
||||
uLong bitb; /* bit buffer */
|
||||
inflate_huft *hufts; /* single malloc for tree space */
|
||||
Bytef *window; /* sliding window */
|
||||
Bytef *end; /* one byte after sliding window */
|
||||
Bytef *read; /* window read pointer */
|
||||
Bytef *write; /* window write pointer */
|
||||
check_func checkfn; /* check function */
|
||||
uLong check; /* check on output */
|
||||
|
||||
};
|
||||
|
||||
|
||||
/* defines for inflate input/output */
|
||||
/* update pointers and return */
|
||||
#define UPDBITS {s->bitb=b;s->bitk=k;}
|
||||
#define UPDIN {z->avail_in=n;z->total_in+=p-z->next_in;z->next_in=p;}
|
||||
#define UPDOUT {s->write=q;}
|
||||
#define UPDATE {UPDBITS UPDIN UPDOUT}
|
||||
#define LEAVE {UPDATE return inflate_flush(s,z,r);}
|
||||
/* get bytes and bits */
|
||||
#define LOADIN {p=z->next_in;n=z->avail_in;b=s->bitb;k=s->bitk;}
|
||||
#define NEEDBYTE {if(n)r=Z_OK;else LEAVE}
|
||||
#define NEXTBYTE (n--,*p++)
|
||||
#define NEEDBITS(j) {while(k<(j)){NEEDBYTE;b|=((uLong)NEXTBYTE)<<k;k+=8;}}
|
||||
#define DUMPBITS(j) {b>>=(j);k-=(j);}
|
||||
/* output bytes */
|
||||
#define WAVAIL (uInt)(q<s->read?s->read-q-1:s->end-q)
|
||||
#define LOADOUT {q=s->write;m=(uInt)WAVAIL;}
|
||||
#define WRAP {if(q==s->end&&s->read!=s->window){q=s->window;m=(uInt)WAVAIL;}}
|
||||
#define FLUSH {UPDOUT r=inflate_flush(s,z,r); LOADOUT}
|
||||
#define NEEDOUT {if(m==0){WRAP if(m==0){FLUSH WRAP if(m==0) LEAVE}}r=Z_OK;}
|
||||
#define OUTBYTE(a) {*q++=(Byte)(a);m--;}
|
||||
/* load local pointers */
|
||||
#define LOAD {LOADIN LOADOUT}
|
||||
|
||||
/* masks for lower bits (size given to avoid silly warnings with Visual C++) */
|
||||
#ifndef NO_INFLATE_MASK
|
||||
local uInt inflate_mask[17];
|
||||
#endif
|
||||
|
||||
/* copy as much as possible from the sliding window to the output area */
|
||||
local int inflate_flush OF((
|
||||
inflate_blocks_statef *,
|
||||
z_streamp ,
|
||||
int));
|
||||
|
||||
#endif
|
||||
|
|
@ -39,21 +39,32 @@ endif
|
|||
# However, it doesn't harm if we add everything as a dependency
|
||||
# unconditionally.
|
||||
#
|
||||
GZIP_DRV_SRCS := $(GZIP_DIR)/adler32.c \
|
||||
$(GZIP_DIR)/ftzconf.h \
|
||||
$(GZIP_DIR)/infblock.c \
|
||||
$(GZIP_DIR)/infblock.h \
|
||||
$(GZIP_DIR)/infcodes.c \
|
||||
$(GZIP_DIR)/infcodes.h \
|
||||
$(GZIP_DIR)/inffixed.h \
|
||||
$(GZIP_DIR)/inflate.c \
|
||||
$(GZIP_DIR)/inftrees.c \
|
||||
$(GZIP_DIR)/inftrees.h \
|
||||
$(GZIP_DIR)/infutil.c \
|
||||
$(GZIP_DIR)/infutil.h \
|
||||
$(GZIP_DIR)/zlib.h \
|
||||
$(GZIP_DIR)/zutil.c \
|
||||
$(GZIP_DIR)/zutil.h
|
||||
GZIP_DRV_SRCS := $(GZIP_DIR)/inftrees.c \
|
||||
$(GZIP_DIR)/gzread.c \
|
||||
$(GZIP_DIR)/inftrees.h \
|
||||
$(GZIP_DIR)/deflate.c \
|
||||
$(GZIP_DIR)/ftzconf.h \
|
||||
$(GZIP_DIR)/trees.c \
|
||||
$(GZIP_DIR)/inffast.c \
|
||||
$(GZIP_DIR)/inflate.c \
|
||||
$(GZIP_DIR)/compress.c \
|
||||
$(GZIP_DIR)/zutil.h \
|
||||
$(GZIP_DIR)/gzwrite.c \
|
||||
$(GZIP_DIR)/deflate.h \
|
||||
$(GZIP_DIR)/zutil.c \
|
||||
$(GZIP_DIR)/inffixed.h \
|
||||
$(GZIP_DIR)/uncompr.c \
|
||||
$(GZIP_DIR)/crc32.h \
|
||||
$(GZIP_DIR)/trees.h \
|
||||
$(GZIP_DIR)/inffast.h \
|
||||
$(GZIP_DIR)/zlib.h \
|
||||
$(GZIP_DIR)/gzlib.c \
|
||||
$(GZIP_DIR)/gzguts.h \
|
||||
$(GZIP_DIR)/adler32.c \
|
||||
$(GZIP_DIR)/crc32.c \
|
||||
$(GZIP_DIR)/inflate.h \
|
||||
$(GZIP_DIR)/gzclose.c
|
||||
|
||||
|
||||
|
||||
# gzip driver object(s)
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,130 @@
|
|||
/* header created automatically with -DGEN_TREES_H */
|
||||
#ifndef Z_TREES_H
|
||||
#define Z_TREES_H
|
||||
local const ct_data static_ltree[L_CODES+2] = {
|
||||
{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}},
|
||||
{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}},
|
||||
{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}},
|
||||
{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}},
|
||||
{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}},
|
||||
{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}},
|
||||
{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}},
|
||||
{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}},
|
||||
{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}},
|
||||
{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}},
|
||||
{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}},
|
||||
{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}},
|
||||
{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}},
|
||||
{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}},
|
||||
{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}},
|
||||
{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}},
|
||||
{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}},
|
||||
{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}},
|
||||
{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}},
|
||||
{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}},
|
||||
{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}},
|
||||
{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}},
|
||||
{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}},
|
||||
{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}},
|
||||
{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}},
|
||||
{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}},
|
||||
{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}},
|
||||
{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}},
|
||||
{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}},
|
||||
{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}},
|
||||
{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}},
|
||||
{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}},
|
||||
{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}},
|
||||
{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}},
|
||||
{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}},
|
||||
{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}},
|
||||
{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}},
|
||||
{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}},
|
||||
{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}},
|
||||
{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}},
|
||||
{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}},
|
||||
{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}},
|
||||
{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}},
|
||||
{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}},
|
||||
{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}},
|
||||
{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}},
|
||||
{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}},
|
||||
{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}},
|
||||
{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}},
|
||||
{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}},
|
||||
{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}},
|
||||
{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}},
|
||||
{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}},
|
||||
{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}},
|
||||
{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}},
|
||||
{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}},
|
||||
{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}},
|
||||
{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}}
|
||||
};
|
||||
|
||||
local const ct_data static_dtree[D_CODES] = {
|
||||
{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
|
||||
{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
|
||||
{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
|
||||
{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
|
||||
{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
|
||||
{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
|
||||
};
|
||||
|
||||
const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {
|
||||
0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,
|
||||
8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,
|
||||
10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
|
||||
11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
|
||||
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
|
||||
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
|
||||
13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
|
||||
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
|
||||
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
|
||||
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
|
||||
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
|
||||
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
|
||||
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17,
|
||||
18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
|
||||
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
|
||||
24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
|
||||
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
|
||||
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
|
||||
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
|
||||
27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
|
||||
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
|
||||
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
|
||||
28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
|
||||
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
|
||||
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
|
||||
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
|
||||
};
|
||||
|
||||
const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {
|
||||
0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,
|
||||
13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
|
||||
17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
|
||||
19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
|
||||
21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
|
||||
22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
|
||||
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
|
||||
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
|
||||
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
|
||||
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
|
||||
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
|
||||
26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
|
||||
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
|
||||
};
|
||||
|
||||
local const int base_length[LENGTH_CODES] = {
|
||||
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
|
||||
64, 80, 96, 112, 128, 160, 192, 224, 0
|
||||
};
|
||||
|
||||
local const int base_dist[D_CODES] = {
|
||||
0, 1, 2, 3, 4, 6, 8, 12, 16, 24,
|
||||
32, 48, 64, 96, 128, 192, 256, 384, 512, 768,
|
||||
1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,93 @@
|
|||
/* uncompr.c -- decompress a memory buffer
|
||||
* Copyright (C) 1995-2003, 2010, 2014, 2016 Jean-loup Gailly, Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* @(#) $Id$ */
|
||||
|
||||
#define ZLIB_INTERNAL
|
||||
#include "zlib.h"
|
||||
|
||||
/* ===========================================================================
|
||||
Decompresses the source buffer into the destination buffer. *sourceLen is
|
||||
the byte length of the source buffer. Upon entry, *destLen is the total size
|
||||
of the destination buffer, which must be large enough to hold the entire
|
||||
uncompressed data. (The size of the uncompressed data must have been saved
|
||||
previously by the compressor and transmitted to the decompressor by some
|
||||
mechanism outside the scope of this compression library.) Upon exit,
|
||||
*destLen is the size of the decompressed data and *sourceLen is the number
|
||||
of source bytes consumed. Upon return, source + *sourceLen points to the
|
||||
first unused input byte.
|
||||
|
||||
uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough
|
||||
memory, Z_BUF_ERROR if there was not enough room in the output buffer, or
|
||||
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)
|
||||
Bytef *dest;
|
||||
uLongf *destLen;
|
||||
const Bytef *source;
|
||||
uLong *sourceLen;
|
||||
{
|
||||
z_stream stream;
|
||||
int err;
|
||||
const uInt max = (uInt)-1;
|
||||
uLong len, left;
|
||||
Byte buf[1]; /* for detection of incomplete stream when *destLen == 0 */
|
||||
|
||||
len = *sourceLen;
|
||||
if (*destLen) {
|
||||
left = *destLen;
|
||||
*destLen = 0;
|
||||
}
|
||||
else {
|
||||
left = 1;
|
||||
dest = buf;
|
||||
}
|
||||
|
||||
stream.next_in = (z_const Bytef *)source;
|
||||
stream.avail_in = 0;
|
||||
stream.zalloc = (alloc_func)0;
|
||||
stream.zfree = (free_func)0;
|
||||
stream.opaque = (voidpf)0;
|
||||
|
||||
err = inflateInit(&stream);
|
||||
if (err != Z_OK) return err;
|
||||
|
||||
stream.next_out = dest;
|
||||
stream.avail_out = 0;
|
||||
|
||||
do {
|
||||
if (stream.avail_out == 0) {
|
||||
stream.avail_out = left > (uLong)max ? max : (uInt)left;
|
||||
left -= stream.avail_out;
|
||||
}
|
||||
if (stream.avail_in == 0) {
|
||||
stream.avail_in = len > (uLong)max ? max : (uInt)len;
|
||||
len -= stream.avail_in;
|
||||
}
|
||||
err = inflate(&stream, Z_NO_FLUSH);
|
||||
} while (err == Z_OK);
|
||||
|
||||
*sourceLen -= len + stream.avail_in;
|
||||
if (dest != buf)
|
||||
*destLen = stream.total_out;
|
||||
else if (stream.total_out && err == Z_BUF_ERROR)
|
||||
left = 1;
|
||||
|
||||
inflateEnd(&stream);
|
||||
return err == Z_STREAM_END ? Z_OK :
|
||||
err == Z_NEED_DICT ? Z_DATA_ERROR :
|
||||
err == Z_BUF_ERROR && left + stream.avail_out ? Z_DATA_ERROR :
|
||||
err;
|
||||
}
|
||||
|
||||
int ZEXPORT uncompress (dest, destLen, source, sourceLen)
|
||||
Bytef *dest;
|
||||
uLongf *destLen;
|
||||
const Bytef *source;
|
||||
uLong sourceLen;
|
||||
{
|
||||
return uncompress2(dest, destLen, source, &sourceLen);
|
||||
}
|
||||
1900
src/gzip/zlib.h
1900
src/gzip/zlib.h
File diff suppressed because it is too large
Load Diff
208
src/gzip/zutil.c
208
src/gzip/zutil.c
|
|
@ -1,20 +1,152 @@
|
|||
/* zutil.c -- target dependent utility functions for the compression library
|
||||
* Copyright (C) 1995-2002 Jean-loup Gailly.
|
||||
* Copyright (C) 1995-2017 Jean-loup Gailly
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* @(#) $Id$ */
|
||||
|
||||
#include "zutil.h"
|
||||
|
||||
#ifndef STDC
|
||||
extern void exit OF((int));
|
||||
#ifndef Z_SOLO
|
||||
# include "gzguts.h"
|
||||
#endif
|
||||
|
||||
z_const char * const z_errmsg[10] = {
|
||||
(z_const char *)"need dictionary", /* Z_NEED_DICT 2 */
|
||||
(z_const char *)"stream end", /* Z_STREAM_END 1 */
|
||||
(z_const char *)"", /* Z_OK 0 */
|
||||
(z_const char *)"file error", /* Z_ERRNO (-1) */
|
||||
(z_const char *)"stream error", /* Z_STREAM_ERROR (-2) */
|
||||
(z_const char *)"data error", /* Z_DATA_ERROR (-3) */
|
||||
(z_const char *)"insufficient memory", /* Z_MEM_ERROR (-4) */
|
||||
(z_const char *)"buffer error", /* Z_BUF_ERROR (-5) */
|
||||
(z_const char *)"incompatible version",/* Z_VERSION_ERROR (-6) */
|
||||
(z_const char *)""
|
||||
};
|
||||
|
||||
|
||||
const char * ZEXPORT zlibVersion()
|
||||
{
|
||||
return ZLIB_VERSION;
|
||||
}
|
||||
|
||||
uLong ZEXPORT zlibCompileFlags()
|
||||
{
|
||||
uLong flags;
|
||||
|
||||
flags = 0;
|
||||
switch ((int)(sizeof(uInt))) {
|
||||
case 2: break;
|
||||
case 4: flags += 1; break;
|
||||
case 8: flags += 2; break;
|
||||
default: flags += 3;
|
||||
}
|
||||
switch ((int)(sizeof(uLong))) {
|
||||
case 2: break;
|
||||
case 4: flags += 1 << 2; break;
|
||||
case 8: flags += 2 << 2; break;
|
||||
default: flags += 3 << 2;
|
||||
}
|
||||
switch ((int)(sizeof(voidpf))) {
|
||||
case 2: break;
|
||||
case 4: flags += 1 << 4; break;
|
||||
case 8: flags += 2 << 4; break;
|
||||
default: flags += 3 << 4;
|
||||
}
|
||||
switch ((int)(sizeof(z_off_t))) {
|
||||
case 2: break;
|
||||
case 4: flags += 1 << 6; break;
|
||||
case 8: flags += 2 << 6; break;
|
||||
default: flags += 3 << 6;
|
||||
}
|
||||
#ifdef ZLIB_DEBUG
|
||||
flags += 1 << 8;
|
||||
#endif
|
||||
#if defined(ASMV) || defined(ASMINF)
|
||||
flags += 1 << 9;
|
||||
#endif
|
||||
#ifdef ZLIB_WINAPI
|
||||
flags += 1 << 10;
|
||||
#endif
|
||||
#ifdef BUILDFIXED
|
||||
flags += 1 << 12;
|
||||
#endif
|
||||
#ifdef DYNAMIC_CRC_TABLE
|
||||
flags += 1 << 13;
|
||||
#endif
|
||||
#ifdef NO_GZCOMPRESS
|
||||
flags += 1L << 16;
|
||||
#endif
|
||||
#ifdef NO_GZIP
|
||||
flags += 1L << 17;
|
||||
#endif
|
||||
#ifdef PKZIP_BUG_WORKAROUND
|
||||
flags += 1L << 20;
|
||||
#endif
|
||||
#ifdef FASTEST
|
||||
flags += 1L << 21;
|
||||
#endif
|
||||
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
|
||||
# ifdef NO_vsnprintf
|
||||
flags += 1L << 25;
|
||||
# ifdef HAS_vsprintf_void
|
||||
flags += 1L << 26;
|
||||
# endif
|
||||
# else
|
||||
# ifdef HAS_vsnprintf_void
|
||||
flags += 1L << 26;
|
||||
# endif
|
||||
# endif
|
||||
#else
|
||||
flags += 1L << 24;
|
||||
# ifdef NO_snprintf
|
||||
flags += 1L << 25;
|
||||
# ifdef HAS_sprintf_void
|
||||
flags += 1L << 26;
|
||||
# endif
|
||||
# else
|
||||
# ifdef HAS_snprintf_void
|
||||
flags += 1L << 26;
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
return flags;
|
||||
}
|
||||
|
||||
#ifdef ZLIB_DEBUG
|
||||
#include <stdlib.h>
|
||||
# ifndef verbose
|
||||
# define verbose 0
|
||||
# endif
|
||||
int ZLIB_INTERNAL z_verbose = verbose;
|
||||
|
||||
void ZLIB_INTERNAL z_error (m)
|
||||
char *m;
|
||||
{
|
||||
fprintf(stderr, "%s\n", m);
|
||||
exit(1);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* exported to allow conversion of error code to string for compress() and
|
||||
* uncompress()
|
||||
*/
|
||||
const char * ZEXPORT zError(err)
|
||||
int err;
|
||||
{
|
||||
return ERR_MSG(err);
|
||||
}
|
||||
|
||||
#if defined(_WIN32_WCE)
|
||||
/* The Microsoft C Run-Time Library for Windows CE doesn't have
|
||||
* errno. We define it as a global variable to simplify porting.
|
||||
* Its value is always 0 and should not be used.
|
||||
*/
|
||||
int errno = 0;
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_MEMCPY
|
||||
|
||||
void zmemcpy(dest, source, len)
|
||||
void ZLIB_INTERNAL zmemcpy(dest, source, len)
|
||||
Bytef* dest;
|
||||
const Bytef* source;
|
||||
uInt len;
|
||||
|
|
@ -25,7 +157,7 @@ void zmemcpy(dest, source, len)
|
|||
} while (--len != 0);
|
||||
}
|
||||
|
||||
int zmemcmp(s1, s2, len)
|
||||
int ZLIB_INTERNAL zmemcmp(s1, s2, len)
|
||||
const Bytef* s1;
|
||||
const Bytef* s2;
|
||||
uInt len;
|
||||
|
|
@ -38,7 +170,7 @@ int zmemcmp(s1, s2, len)
|
|||
return 0;
|
||||
}
|
||||
|
||||
void zmemzero(dest, len)
|
||||
void ZLIB_INTERNAL zmemzero(dest, len)
|
||||
Bytef* dest;
|
||||
uInt len;
|
||||
{
|
||||
|
|
@ -49,11 +181,13 @@ void zmemzero(dest, len)
|
|||
}
|
||||
#endif
|
||||
|
||||
#if defined( MSDOS ) && defined( __TURBOC__ ) && !defined( MY_ZCALLOC )
|
||||
#if (defined( __BORLANDC__) || !defined(SMALL_MEDIUM)) && !defined(__32BIT__)
|
||||
/* Small and medium model in Turbo C are for now limited to near allocation
|
||||
* with reduced MAX_WBITS and MAX_MEM_LEVEL
|
||||
*/
|
||||
#ifndef Z_SOLO
|
||||
|
||||
#ifdef SYS16BIT
|
||||
|
||||
#ifdef __TURBOC__
|
||||
/* Turbo C in 16-bit mode */
|
||||
|
||||
# define MY_ZCALLOC
|
||||
|
||||
/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
|
||||
|
|
@ -80,11 +214,13 @@ local ptr_table table[MAX_PTR];
|
|||
* a protected system like OS/2. Use Microsoft C instead.
|
||||
*/
|
||||
|
||||
voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
|
||||
voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
|
||||
{
|
||||
voidpf buf = opaque; /* just to make some compilers happy */
|
||||
voidpf buf;
|
||||
ulg bsize = (ulg)items*size;
|
||||
|
||||
(void)opaque;
|
||||
|
||||
/* If we allocate less than 65520 bytes, we assume that farmalloc
|
||||
* will return a usable pointer which doesn't have to be normalized.
|
||||
*/
|
||||
|
|
@ -104,9 +240,12 @@ voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
|
|||
return buf;
|
||||
}
|
||||
|
||||
void zcfree (voidpf opaque, voidpf ptr)
|
||||
void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
|
||||
{
|
||||
int n;
|
||||
|
||||
(void)opaque;
|
||||
|
||||
if (*(ush*)&ptr != 0) { /* object < 64K */
|
||||
farfree(ptr);
|
||||
return;
|
||||
|
|
@ -122,14 +261,13 @@ void zcfree (voidpf opaque, voidpf ptr)
|
|||
next_ptr--;
|
||||
return;
|
||||
}
|
||||
ptr = opaque; /* just to make some compilers happy */
|
||||
Assert(0, "zcfree: ptr not found");
|
||||
}
|
||||
#endif
|
||||
#endif /* MSDOS && __TURBOC__ */
|
||||
|
||||
#endif /* __TURBOC__ */
|
||||
|
||||
|
||||
#if defined(M_I86) && !defined(__32BIT__) && !defined( MY_ZCALLOC )
|
||||
#ifdef M_I86
|
||||
/* Microsoft C in 16-bit mode */
|
||||
|
||||
# define MY_ZCALLOC
|
||||
|
|
@ -139,43 +277,49 @@ void zcfree (voidpf opaque, voidpf ptr)
|
|||
# define _hfree hfree
|
||||
#endif
|
||||
|
||||
voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
|
||||
voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
|
||||
{
|
||||
if (opaque) opaque = 0; /* to make compiler happy */
|
||||
(void)opaque;
|
||||
return _halloc((long)items, size);
|
||||
}
|
||||
|
||||
void zcfree (voidpf opaque, voidpf ptr)
|
||||
void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
|
||||
{
|
||||
if (opaque) opaque = 0; /* to make compiler happy */
|
||||
(void)opaque;
|
||||
_hfree(ptr);
|
||||
}
|
||||
|
||||
#endif /* MSC */
|
||||
#endif /* M_I86 */
|
||||
|
||||
#endif /* SYS16BIT */
|
||||
|
||||
|
||||
#ifndef MY_ZCALLOC /* Any system without a special alloc function */
|
||||
|
||||
#ifndef STDC
|
||||
extern voidp ft_scalloc OF((uInt items, uInt size));
|
||||
extern void ft_sfree OF((voidpf ptr));
|
||||
extern voidp malloc OF((uInt size));
|
||||
extern voidp calloc OF((uInt items, uInt size));
|
||||
extern void free OF((voidpf ptr));
|
||||
#endif
|
||||
|
||||
voidpf zcalloc (opaque, items, size)
|
||||
voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
|
||||
voidpf opaque;
|
||||
unsigned items;
|
||||
unsigned size;
|
||||
{
|
||||
if (opaque) items += size - size; /* make compiler happy */
|
||||
return (voidpf)ft_scalloc(items, size);
|
||||
(void)opaque;
|
||||
return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
|
||||
(voidpf)calloc(items, size);
|
||||
}
|
||||
|
||||
void zcfree (opaque, ptr)
|
||||
void ZLIB_INTERNAL zcfree (opaque, ptr)
|
||||
voidpf opaque;
|
||||
voidpf ptr;
|
||||
{
|
||||
ft_sfree(ptr);
|
||||
if (opaque) return; /* make compiler happy */
|
||||
(void)opaque;
|
||||
free(ptr);
|
||||
}
|
||||
|
||||
#endif /* MY_ZCALLOC */
|
||||
|
||||
#endif /* !Z_SOLO */
|
||||
|
|
|
|||
186
src/gzip/zutil.h
186
src/gzip/zutil.h
|
|
@ -1,5 +1,5 @@
|
|||
/* zutil.h -- internal interface and configuration of the compression library
|
||||
* Copyright (C) 1995-2002 Jean-loup Gailly.
|
||||
* Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
|
|
@ -10,26 +10,35 @@
|
|||
|
||||
/* @(#) $Id$ */
|
||||
|
||||
#ifndef _Z_UTIL_H
|
||||
#define _Z_UTIL_H
|
||||
#ifndef ZUTIL_H
|
||||
#define ZUTIL_H
|
||||
|
||||
#ifdef HAVE_HIDDEN
|
||||
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
|
||||
#else
|
||||
# define ZLIB_INTERNAL
|
||||
#endif
|
||||
|
||||
#include "zlib.h"
|
||||
|
||||
#ifdef STDC
|
||||
# include <stddef.h>
|
||||
#if defined(STDC) && !defined(Z_SOLO)
|
||||
# if !(defined(_WIN32_WCE) && defined(_MSC_VER))
|
||||
# include <stddef.h>
|
||||
# endif
|
||||
# include <string.h>
|
||||
# include <stdlib.h>
|
||||
#endif
|
||||
#ifdef NO_ERRNO_H
|
||||
extern int errno;
|
||||
#else
|
||||
# include <errno.h>
|
||||
|
||||
#ifdef Z_SOLO
|
||||
typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */
|
||||
#endif
|
||||
|
||||
#ifndef local
|
||||
# define local static
|
||||
#endif
|
||||
/* compile with -Dlocal if your debugger can't find static symbols */
|
||||
/* since "static" is used to mean two completely different things in C, we
|
||||
define "local" for the non-static meaning of "static", for readability
|
||||
(compile with -Dlocal if your debugger can't find static symbols) */
|
||||
|
||||
typedef unsigned char uch;
|
||||
typedef uch FAR uchf;
|
||||
|
|
@ -37,9 +46,13 @@ typedef unsigned short ush;
|
|||
typedef ush FAR ushf;
|
||||
typedef unsigned long ulg;
|
||||
|
||||
extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
|
||||
/* (size given to avoid silly warnings with Visual C++) */
|
||||
|
||||
#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
|
||||
|
||||
#define ERR_RETURN(strm,err) \
|
||||
return (strm->msg = (char*)ERR_MSG(err), (err))
|
||||
return (strm->msg = ERR_MSG(err), (err))
|
||||
/* To be used only when the state is known to be valid */
|
||||
|
||||
/* common constants */
|
||||
|
|
@ -69,90 +82,129 @@ typedef unsigned long ulg;
|
|||
|
||||
/* target dependencies */
|
||||
|
||||
#ifdef MSDOS
|
||||
#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
|
||||
# define OS_CODE 0x00
|
||||
# if defined(__TURBOC__) || defined(__BORLANDC__)
|
||||
# if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
|
||||
/* Allow compilation with ANSI keywords only enabled */
|
||||
void _Cdecl farfree( void *block );
|
||||
void *_Cdecl farmalloc( unsigned long nbytes );
|
||||
# else
|
||||
# include <alloc.h>
|
||||
# ifndef Z_SOLO
|
||||
# if defined(__TURBOC__) || defined(__BORLANDC__)
|
||||
# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
|
||||
/* Allow compilation with ANSI keywords only enabled */
|
||||
void _Cdecl farfree( void *block );
|
||||
void *_Cdecl farmalloc( unsigned long nbytes );
|
||||
# else
|
||||
# include <alloc.h>
|
||||
# endif
|
||||
# else /* MSC or DJGPP */
|
||||
# include <malloc.h>
|
||||
# endif
|
||||
# else /* MSC or DJGPP */
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef OS2
|
||||
# define OS_CODE 0x06
|
||||
#endif
|
||||
|
||||
#ifdef WIN32 /* Window 95 & Windows NT */
|
||||
# define OS_CODE 0x0b
|
||||
#ifdef AMIGA
|
||||
# define OS_CODE 1
|
||||
#endif
|
||||
|
||||
#if defined(VAXC) || defined(VMS)
|
||||
# define OS_CODE 0x02
|
||||
# define OS_CODE 2
|
||||
# define F_OPEN(name, mode) \
|
||||
ft_fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
|
||||
#endif
|
||||
|
||||
#ifdef AMIGA
|
||||
# define OS_CODE 0x01
|
||||
#ifdef __370__
|
||||
# if __TARGET_LIB__ < 0x20000000
|
||||
# define OS_CODE 4
|
||||
# elif __TARGET_LIB__ < 0x40000000
|
||||
# define OS_CODE 11
|
||||
# else
|
||||
# define OS_CODE 8
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined(ATARI) || defined(atarist)
|
||||
# define OS_CODE 0x05
|
||||
# define OS_CODE 5
|
||||
#endif
|
||||
|
||||
#ifdef OS2
|
||||
# define OS_CODE 6
|
||||
# if defined(M_I86) && !defined(Z_SOLO)
|
||||
# include <malloc.h>
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined(MACOS) || defined(TARGET_OS_MAC)
|
||||
# define OS_CODE 0x07
|
||||
# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
|
||||
# include <unix.h> /* for fdopen */
|
||||
# else
|
||||
# ifndef fdopen
|
||||
# define fdopen(fd,mode) NULL /* No fdopen() */
|
||||
# define OS_CODE 7
|
||||
# ifndef Z_SOLO
|
||||
# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
|
||||
# include <unix.h> /* for fdopen */
|
||||
# else
|
||||
# ifndef fdopen
|
||||
# define fdopen(fd,mode) NULL /* No fdopen() */
|
||||
# endif
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef __50SERIES /* Prime/PRIMOS */
|
||||
# define OS_CODE 0x0F
|
||||
#ifdef __acorn
|
||||
# define OS_CODE 13
|
||||
#endif
|
||||
|
||||
#ifdef TOPS20
|
||||
# define OS_CODE 0x0a
|
||||
#if defined(WIN32) && !defined(__CYGWIN__)
|
||||
# define OS_CODE 10
|
||||
#endif
|
||||
|
||||
#ifdef _BEOS_
|
||||
# define OS_CODE 16
|
||||
#endif
|
||||
|
||||
#ifdef __TOS_OS400__
|
||||
# define OS_CODE 18
|
||||
#endif
|
||||
|
||||
#ifdef __APPLE__
|
||||
# define OS_CODE 19
|
||||
#endif
|
||||
|
||||
#if defined(_BEOS_) || defined(RISCOS)
|
||||
# define fdopen(fd,mode) NULL /* No fdopen() */
|
||||
#endif
|
||||
|
||||
#if (defined(_MSC_VER) && (_MSC_VER > 600))
|
||||
# define fdopen(fd,type) _fdopen(fd,type)
|
||||
#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
|
||||
# if defined(_WIN32_WCE)
|
||||
# define fdopen(fd,mode) NULL /* No fdopen() */
|
||||
# ifndef _PTRDIFF_T_DEFINED
|
||||
typedef int ptrdiff_t;
|
||||
# define _PTRDIFF_T_DEFINED
|
||||
# endif
|
||||
# else
|
||||
# define fdopen(fd,type) _fdopen(fd,type)
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if defined(__BORLANDC__) && !defined(MSDOS)
|
||||
#pragma warn -8004
|
||||
#pragma warn -8008
|
||||
#pragma warn -8066
|
||||
#endif
|
||||
|
||||
/* Common defaults */
|
||||
/* provide prototypes for these when building zlib without LFS */
|
||||
#if !defined(_WIN32) && \
|
||||
(!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));
|
||||
#endif
|
||||
|
||||
/* common defaults */
|
||||
|
||||
#ifndef OS_CODE
|
||||
# define OS_CODE 0x03 /* assume Unix */
|
||||
# define OS_CODE 3 /* assume Unix */
|
||||
#endif
|
||||
|
||||
#ifndef F_OPEN
|
||||
# define F_OPEN(name, mode) ft_fopen((name), (mode))
|
||||
# define F_OPEN(name, mode) fopen((name), (mode))
|
||||
#endif
|
||||
|
||||
/* functions */
|
||||
|
||||
#ifdef HAVE_STRERROR
|
||||
extern char *strerror OF((int));
|
||||
# define zstrerror(errnum) strerror(errnum)
|
||||
#else
|
||||
# define zstrerror(errnum) ""
|
||||
#endif
|
||||
|
||||
#if defined(pyr)
|
||||
#if defined(pyr) || defined(Z_SOLO)
|
||||
# define NO_MEMCPY
|
||||
#endif
|
||||
#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
|
||||
|
|
@ -176,16 +228,16 @@ typedef unsigned long ulg;
|
|||
# define zmemzero(dest, len) ft_memset(dest, 0, len)
|
||||
# endif
|
||||
#else
|
||||
extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
|
||||
extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
|
||||
extern void zmemzero OF((Bytef* dest, uInt len));
|
||||
void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
|
||||
int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
|
||||
void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
|
||||
#endif
|
||||
|
||||
/* Diagnostic functions */
|
||||
#ifdef DEBUG
|
||||
#ifdef ZLIB_DEBUG
|
||||
# include <stdio.h>
|
||||
extern int z_verbose;
|
||||
extern void z_error OF((char *m));
|
||||
extern int ZLIB_INTERNAL z_verbose;
|
||||
extern void ZLIB_INTERNAL z_error OF((char *m));
|
||||
# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
|
||||
# define Trace(x) {if (z_verbose>=0) fprintf x ;}
|
||||
# define Tracev(x) {if (z_verbose>0) fprintf x ;}
|
||||
|
|
@ -201,15 +253,19 @@ typedef unsigned long ulg;
|
|||
# define Tracecv(c,x)
|
||||
#endif
|
||||
|
||||
|
||||
typedef uLong (*check_func) OF((uLong check, const Bytef *buf,
|
||||
uInt len));
|
||||
local voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
|
||||
local void zcfree OF((voidpf opaque, voidpf ptr));
|
||||
#ifndef Z_SOLO
|
||||
static voidpf zcalloc OF((voidpf opaque, unsigned items,
|
||||
unsigned size));
|
||||
static void zcfree OF((voidpf opaque, voidpf ptr));
|
||||
#endif
|
||||
|
||||
#define ZALLOC(strm, items, size) \
|
||||
(*((strm)->zalloc))((strm)->opaque, (items), (size))
|
||||
#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
|
||||
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
|
||||
|
||||
#endif /* _Z_UTIL_H */
|
||||
/* Reverse the bytes in a 32-bit value */
|
||||
#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
|
||||
(((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
|
||||
|
||||
#endif /* ZUTIL_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue