digest (empty) → 0.0.0.1
raw patch · 10 files changed
+2882/−0 lines, 10 filesdep +basedep +bytestringsetup-changed
Dependencies added: base, bytestring
Files
- Data/Digest/Adler32.hsc +58/−0
- Data/Digest/CRC32.hsc +58/−0
- LICENSE +23/−0
- Setup.hs +2/−0
- cbits/adler32.c +149/−0
- cbits/crc32.c +423/−0
- cbits/crc32.h +441/−0
- cbits/zconf.h +332/−0
- cbits/zlib.h +1357/−0
- digest.cabal +39/−0
+ Data/Digest/Adler32.hsc view
@@ -0,0 +1,58 @@+{-# LANGUAGE ForeignFunctionInterface, FlexibleInstances #-} +------------------------------------------------------------ +-- | +-- Copyright : (c) 2008 Eugene Kirpichov +-- License : BSD-style +-- +-- Maintainer : ekirpichov@gmail.com +-- Stability : experimental +-- Portability : portable (H98 + FFI) +-- +-- Adler32 wrapper +-- +------------------------------------------------------------ + +module Data.Digest.Adler32 ( + Adler32, adler32 +) where + +import Foreign +import Foreign.C.Types +import Foreign.ForeignPtr +import GHC.Ptr + +import qualified Data.ByteString as S +import qualified Data.ByteString.Internal as BI +import qualified Data.ByteString.Lazy as L +import qualified Data.ByteString.Lazy.Internal as LI + +#include "zlib.h" + +-- | The class of values for which Adler32 may be computed +class Adler32 a where + -- | Compute Adler32 checksum + adler32 :: a -> Word32 + +instance Adler32 S.ByteString where + adler32 = adler32_s + +instance Adler32 L.ByteString where + adler32 = adler32_l + +instance Adler32 [Word8] where + adler32 = adler32 . L.pack + + +adler32_s :: S.ByteString -> Word32 +adler32_s s = adler32_l (LI.Chunk s LI.Empty) + +adler32_l :: L.ByteString -> Word32 +adler32_l = LI.foldlChunks updateAdler 0 + where updateAdler adler bs = fromIntegral $ adler32_c (fromIntegral adler) buf (fromIntegral len) + where (ptr, offset, len) = BI.toForeignPtr bs + buf = (unsafeForeignPtrToPtr ptr) `plusPtr` offset + +foreign import ccall unsafe "zlib.h adler32" + adler32_c :: CInt -> Ptr Word8 -> CInt -> CInt -- adler, buf, len -> adler' + +
+ Data/Digest/CRC32.hsc view
@@ -0,0 +1,58 @@+{-# LANGUAGE ForeignFunctionInterface, FlexibleInstances #-} +------------------------------------------------------------ +-- | +-- Copyright : (c) 2008 Eugene Kirpichov +-- License : BSD-style +-- +-- Maintainer : ekirpichov@gmail.com +-- Stability : experimental +-- Portability : portable (H98 + FFI) +-- +-- CRC32 wrapper +-- +------------------------------------------------------------ + +module Data.Digest.CRC32 ( + CRC32, crc32 +) where + +import Foreign +import Foreign.C.Types +import Foreign.ForeignPtr +import GHC.Ptr + +import qualified Data.ByteString as S +import qualified Data.ByteString.Internal as BI +import qualified Data.ByteString.Lazy as L +import qualified Data.ByteString.Lazy.Internal as LI + +#include "zlib.h" + +-- | The class of values for which CRC32 may be computed +class CRC32 a where + -- | Compute CRC32 checksum + crc32 :: a -> Word32 + +instance CRC32 S.ByteString where + crc32 = crc32_s + +instance CRC32 L.ByteString where + crc32 = crc32_l + +instance CRC32 [Word8] where + crc32 = crc32 . L.pack + + +crc32_s :: S.ByteString -> Word32 +crc32_s s = crc32_l (LI.Chunk s LI.Empty) + +crc32_l :: L.ByteString -> Word32 +crc32_l = LI.foldlChunks updateCRC 0 + where updateCRC crc bs = fromIntegral $ crc32_c (fromIntegral crc) buf (fromIntegral len) + where (ptr, offset, len) = BI.toForeignPtr bs + buf = (unsafeForeignPtrToPtr ptr) `plusPtr` offset + +foreign import ccall unsafe "zlib.h crc32" + crc32_c :: CInt -> Ptr Word8 -> CInt -> CInt -- crc, buf, len -> crc' + +
+ LICENSE view
@@ -0,0 +1,23 @@+Copyright (c) 2006-2008, Eugene Kirpichov+All rights reserved.++Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are met:++1. Redistributions of source code must retain the above copyright notice,+ this list of conditions and the following disclaimer.+2. Redistributions in binary form must reproduce the above copyright+ notice, this list of conditions and the following disclaimer in the+ documentation and/or other materials provided with the distribution.++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE+POSSIBILITY OF SUCH DAMAGE.
+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ cbits/adler32.c view
@@ -0,0 +1,149 @@+/* adler32.c -- compute the Adler-32 checksum of a data stream+ * Copyright (C) 1995-2004 Mark Adler+ * For conditions of distribution and use, see copyright notice in zlib.h+ */++/* @(#) $Id$ */++#define ZLIB_INTERNAL+#include "zlib.h"++#define BASE 65521UL /* largest prime smaller than 65536 */+#define NMAX 5552+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */++#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}+#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);+#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);+#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);+#define DO16(buf) DO8(buf,0); DO8(buf,8);++/* use NO_DIVIDE if your processor does not do division in hardware */+#ifdef NO_DIVIDE+# define MOD(a) \+ do { \+ if (a >= (BASE << 16)) a -= (BASE << 16); \+ if (a >= (BASE << 15)) a -= (BASE << 15); \+ if (a >= (BASE << 14)) a -= (BASE << 14); \+ if (a >= (BASE << 13)) a -= (BASE << 13); \+ if (a >= (BASE << 12)) a -= (BASE << 12); \+ if (a >= (BASE << 11)) a -= (BASE << 11); \+ if (a >= (BASE << 10)) a -= (BASE << 10); \+ if (a >= (BASE << 9)) a -= (BASE << 9); \+ if (a >= (BASE << 8)) a -= (BASE << 8); \+ if (a >= (BASE << 7)) a -= (BASE << 7); \+ if (a >= (BASE << 6)) a -= (BASE << 6); \+ if (a >= (BASE << 5)) a -= (BASE << 5); \+ if (a >= (BASE << 4)) a -= (BASE << 4); \+ if (a >= (BASE << 3)) a -= (BASE << 3); \+ if (a >= (BASE << 2)) a -= (BASE << 2); \+ if (a >= (BASE << 1)) a -= (BASE << 1); \+ if (a >= BASE) a -= BASE; \+ } while (0)+# define MOD4(a) \+ do { \+ if (a >= (BASE << 4)) a -= (BASE << 4); \+ if (a >= (BASE << 3)) a -= (BASE << 3); \+ if (a >= (BASE << 2)) a -= (BASE << 2); \+ if (a >= (BASE << 1)) a -= (BASE << 1); \+ if (a >= BASE) a -= BASE; \+ } while (0)+#else+# define MOD(a) a %= BASE+# define MOD4(a) a %= BASE+#endif++/* ========================================================================= */+uLong ZEXPORT adler32(adler, buf, len)+ uLong adler;+ const Bytef *buf;+ uInt len;+{+ unsigned long sum2;+ unsigned n;++ /* split Adler-32 into component sums */+ sum2 = (adler >> 16) & 0xffff;+ adler &= 0xffff;++ /* in case user likes doing a byte at a time, keep it fast */+ if (len == 1) {+ adler += buf[0];+ if (adler >= BASE)+ adler -= BASE;+ sum2 += adler;+ if (sum2 >= BASE)+ sum2 -= BASE;+ return adler | (sum2 << 16);+ }++ /* initial Adler-32 value (deferred check for len == 1 speed) */+ if (buf == Z_NULL)+ return 1L;++ /* in case short lengths are provided, keep it somewhat fast */+ if (len < 16) {+ while (len--) {+ adler += *buf++;+ sum2 += adler;+ }+ if (adler >= BASE)+ adler -= BASE;+ MOD4(sum2); /* only added so many BASE's */+ return adler | (sum2 << 16);+ }++ /* do length NMAX blocks -- requires just one modulo operation */+ while (len >= NMAX) {+ len -= NMAX;+ n = NMAX / 16; /* NMAX is divisible by 16 */+ do {+ DO16(buf); /* 16 sums unrolled */+ buf += 16;+ } while (--n);+ MOD(adler);+ MOD(sum2);+ }++ /* do remaining bytes (less than NMAX, still just one modulo) */+ if (len) { /* avoid modulos if none remaining */+ while (len >= 16) {+ len -= 16;+ DO16(buf);+ buf += 16;+ }+ while (len--) {+ adler += *buf++;+ sum2 += adler;+ }+ MOD(adler);+ MOD(sum2);+ }++ /* return recombined sums */+ return adler | (sum2 << 16);+}++/* ========================================================================= */+uLong ZEXPORT adler32_combine(adler1, adler2, len2)+ uLong adler1;+ uLong adler2;+ z_off_t len2;+{+ unsigned long sum1;+ unsigned long sum2;+ unsigned rem;++ /* the derivation of this formula is left as an exercise for the reader */+ rem = (unsigned)(len2 % BASE);+ sum1 = adler1 & 0xffff;+ sum2 = rem * sum1;+ MOD(sum2);+ sum1 += (adler2 & 0xffff) + BASE - 1;+ sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;+ if (sum1 > BASE) sum1 -= BASE;+ if (sum1 > BASE) sum1 -= BASE;+ if (sum2 > (BASE << 1)) sum2 -= (BASE << 1);+ if (sum2 > BASE) sum2 -= BASE;+ return sum1 | (sum2 << 16);+}
+ cbits/crc32.c view
@@ -0,0 +1,423 @@+/* crc32.c -- compute the CRC-32 of a data stream+ * Copyright (C) 1995-2005 Mark Adler+ * For conditions of distribution and use, see copyright notice in zlib.h+ *+ * Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster+ * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing+ * tables for updating the shift register in one step with three exclusive-ors+ * instead of four steps with four exclusive-ors. This results in about a+ * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.+ */++/* @(#) $Id$ */++/*+ 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().+ */++#ifdef MAKECRCH+# include <stdio.h>+# ifndef DYNAMIC_CRC_TABLE+# define DYNAMIC_CRC_TABLE+# endif /* !DYNAMIC_CRC_TABLE */+#endif /* MAKECRCH */++#include "zutil.h" /* for STDC and FAR definitions */++#define local static++/* Find a four-byte integer type for crc32_little() and crc32_big(). */+#ifndef NOBYFOUR+# ifdef STDC /* need ANSI C limits.h to determine sizes */+# include <limits.h>+# define BYFOUR+# if (UINT_MAX == 0xffffffffUL)+ typedef unsigned int u4;+# else+# if (ULONG_MAX == 0xffffffffUL)+ typedef unsigned long u4;+# else+# if (USHRT_MAX == 0xffffffffUL)+ typedef unsigned short u4;+# else+# undef BYFOUR /* can't find a four-byte integer type! */+# endif+# endif+# endif+# endif /* STDC */+#endif /* !NOBYFOUR */++/* Definitions for doing the crc four data bytes at a time. */+#ifdef BYFOUR+# define REV(w) (((w)>>24)+(((w)>>8)&0xff00)+ \+ (((w)&0xff00)<<8)+(((w)&0xff)<<24))+ local unsigned long crc32_little OF((unsigned long,+ const unsigned char FAR *, unsigned));+ local unsigned long crc32_big OF((unsigned long,+ const unsigned char FAR *, unsigned));+# define TBLS 8+#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));++#ifdef DYNAMIC_CRC_TABLE++local volatile int crc_table_empty = 1;+local unsigned long FAR crc_table[TBLS][256];+local void make_crc_table OF((void));+#ifdef MAKECRCH+ local void write_table OF((FILE *, const unsigned long 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()+{+ unsigned long c;+ int n, k;+ unsigned long 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 = 0UL;+ for (n = 0; n < sizeof(p)/sizeof(unsigned char); n++)+ poly |= 1UL << (31 - p[n]);++ /* generate a crc for every 8-bit value */+ for (n = 0; n < 256; n++) {+ c = (unsigned long)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] = REV(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] = REV(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 unsigned long 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 unsigned long FAR *table;+{+ int n;++ for (n = 0; n < 256; n++)+ fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ", 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 unsigned long FAR * ZEXPORT get_crc_table()+{+#ifdef DYNAMIC_CRC_TABLE+ if (crc_table_empty)+ make_crc_table();+#endif /* DYNAMIC_CRC_TABLE */+ return (const unsigned long 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(crc, buf, len)+ unsigned long crc;+ const unsigned char FAR *buf;+ unsigned 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)) {+ u4 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;+}++#ifdef BYFOUR++/* ========================================================================= */+#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;+ unsigned len;+{+ register u4 c;+ register const u4 FAR *buf4;++ c = (u4)crc;+ c = ~c;+ while (len && ((ptrdiff_t)buf & 3)) {+ c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);+ len--;+ }++ buf4 = (const u4 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;+ unsigned len;+{+ register u4 c;+ register const u4 FAR *buf4;++ c = REV((u4)crc);+ c = ~c;+ while (len && ((ptrdiff_t)buf & 3)) {+ c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);+ len--;+ }++ buf4 = (const u4 FAR *)(const void FAR *)buf;+ buf4--;+ while (len >= 32) {+ DOBIG32;+ len -= 32;+ }+ while (len >= 4) {+ DOBIG4;+ len -= 4;+ }+ buf4++;+ 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)(REV(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]);+}++/* ========================================================================= */+uLong ZEXPORT crc32_combine(crc1, crc2, len2)+ uLong crc1;+ uLong crc2;+ z_off_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 */+ if (len2 == 0)+ return crc1;++ /* put operator for one zero bit in odd */+ odd[0] = 0xedb88320L; /* CRC-32 polynomial */+ row = 1;+ for (n = 1; n < GF2_DIM; n++) {+ odd[n] = row;+ row <<= 1;+ }++ /* put operator for two zero bits in even */+ gf2_matrix_square(even, odd);++ /* put operator for four zero bits in odd */+ gf2_matrix_square(odd, even);++ /* apply len2 zeros to crc1 (first square will put the operator for one+ zero byte, eight zero bits, in even) */+ do {+ /* apply zeros operator for this bit of len2 */+ gf2_matrix_square(even, odd);+ if (len2 & 1)+ crc1 = gf2_matrix_times(even, crc1);+ len2 >>= 1;++ /* if no more bits set, then done */+ if (len2 == 0)+ break;++ /* another iteration of the loop with odd and even swapped */+ gf2_matrix_square(odd, even);+ if (len2 & 1)+ crc1 = gf2_matrix_times(odd, crc1);+ len2 >>= 1;++ /* if no more bits set, then done */+ } while (len2 != 0);++ /* return combined crc */+ crc1 ^= crc2;+ return crc1;+}
+ cbits/crc32.h view
@@ -0,0 +1,441 @@+/* crc32.h -- tables for rapid CRC calculation+ * Generated automatically by crc32.c+ */++local const unsigned long 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,+ 0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL,+ 0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,+ 0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,+ 0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,+ 0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,+ 0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,+ 0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,+ 0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,+ 0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,+ 0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,+ 0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,+ 0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,+ 0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL,+ 0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL,+ 0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL,+ 0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL,+ 0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL,+ 0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL,+ 0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL,+ 0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL,+ 0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL,+ 0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL,+ 0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL,+ 0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL,+ 0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL,+ 0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL,+ 0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL,+ 0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL,+ 0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL,+ 0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL,+ 0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL,+ 0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL,+ 0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL,+ 0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL,+ 0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL,+ 0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL,+ 0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL,+ 0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL,+ 0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL,+ 0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL,+ 0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL,+ 0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL,+ 0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL,+ 0x9324fd72UL+ },+ {+ 0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL,+ 0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL,+ 0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL,+ 0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL,+ 0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL,+ 0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL,+ 0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL,+ 0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL,+ 0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL,+ 0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL,+ 0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL,+ 0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL,+ 0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL,+ 0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL,+ 0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL,+ 0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL,+ 0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL,+ 0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL,+ 0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL,+ 0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL,+ 0x4fde63fcUL, 0x4e1c09cbUL, 0x4c5ab792UL, 0x4d98dda5UL, 0x46c49a98UL,+ 0x4706f0afUL, 0x45404ef6UL, 0x448224c1UL, 0x41cd3244UL, 0x400f5873UL,+ 0x4249e62aUL, 0x438b8c1dUL, 0x54f16850UL, 0x55330267UL, 0x5775bc3eUL,+ 0x56b7d609UL, 0x53f8c08cUL, 0x523aaabbUL, 0x507c14e2UL, 0x51be7ed5UL,+ 0x5ae239e8UL, 0x5b2053dfUL, 0x5966ed86UL, 0x58a487b1UL, 0x5deb9134UL,+ 0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL,+ 0xe2b1cfeeUL, 0xe373a5d9UL, 0xe63cb35cUL, 0xe7fed96bUL, 0xe5b86732UL,+ 0xe47a0d05UL, 0xef264a38UL, 0xeee4200fUL, 0xeca29e56UL, 0xed60f461UL,+ 0xe82fe2e4UL, 0xe9ed88d3UL, 0xebab368aUL, 0xea695cbdUL, 0xfd13b8f0UL,+ 0xfcd1d2c7UL, 0xfe976c9eUL, 0xff5506a9UL, 0xfa1a102cUL, 0xfbd87a1bUL,+ 0xf99ec442UL, 0xf85cae75UL, 0xf300e948UL, 0xf2c2837fUL, 0xf0843d26UL,+ 0xf1465711UL, 0xf4094194UL, 0xf5cb2ba3UL, 0xf78d95faUL, 0xf64fffcdUL,+ 0xd9785d60UL, 0xd8ba3757UL, 0xdafc890eUL, 0xdb3ee339UL, 0xde71f5bcUL,+ 0xdfb39f8bUL, 0xddf521d2UL, 0xdc374be5UL, 0xd76b0cd8UL, 0xd6a966efUL,+ 0xd4efd8b6UL, 0xd52db281UL, 0xd062a404UL, 0xd1a0ce33UL, 0xd3e6706aUL,+ 0xd2241a5dUL, 0xc55efe10UL, 0xc49c9427UL, 0xc6da2a7eUL, 0xc7184049UL,+ 0xc25756ccUL, 0xc3953cfbUL, 0xc1d382a2UL, 0xc011e895UL, 0xcb4dafa8UL,+ 0xca8fc59fUL, 0xc8c97bc6UL, 0xc90b11f1UL, 0xcc440774UL, 0xcd866d43UL,+ 0xcfc0d31aUL, 0xce02b92dUL, 0x91af9640UL, 0x906dfc77UL, 0x922b422eUL,+ 0x93e92819UL, 0x96a63e9cUL, 0x976454abUL, 0x9522eaf2UL, 0x94e080c5UL,+ 0x9fbcc7f8UL, 0x9e7eadcfUL, 0x9c381396UL, 0x9dfa79a1UL, 0x98b56f24UL,+ 0x99770513UL, 0x9b31bb4aUL, 0x9af3d17dUL, 0x8d893530UL, 0x8c4b5f07UL,+ 0x8e0de15eUL, 0x8fcf8b69UL, 0x8a809decUL, 0x8b42f7dbUL, 0x89044982UL,+ 0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL,+ 0x8493cc54UL, 0x8551a663UL, 0x8717183aUL, 0x86d5720dUL, 0xa9e2d0a0UL,+ 0xa820ba97UL, 0xaa6604ceUL, 0xaba46ef9UL, 0xaeeb787cUL, 0xaf29124bUL,+ 0xad6fac12UL, 0xacadc625UL, 0xa7f18118UL, 0xa633eb2fUL, 0xa4755576UL,+ 0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL,+ 0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL,+ 0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL,+ 0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL,+ 0xbe9834edUL+ },+ {+ 0x00000000UL, 0xb8bc6765UL, 0xaa09c88bUL, 0x12b5afeeUL, 0x8f629757UL,+ 0x37def032UL, 0x256b5fdcUL, 0x9dd738b9UL, 0xc5b428efUL, 0x7d084f8aUL,+ 0x6fbde064UL, 0xd7018701UL, 0x4ad6bfb8UL, 0xf26ad8ddUL, 0xe0df7733UL,+ 0x58631056UL, 0x5019579fUL, 0xe8a530faUL, 0xfa109f14UL, 0x42acf871UL,+ 0xdf7bc0c8UL, 0x67c7a7adUL, 0x75720843UL, 0xcdce6f26UL, 0x95ad7f70UL,+ 0x2d111815UL, 0x3fa4b7fbUL, 0x8718d09eUL, 0x1acfe827UL, 0xa2738f42UL,+ 0xb0c620acUL, 0x087a47c9UL, 0xa032af3eUL, 0x188ec85bUL, 0x0a3b67b5UL,+ 0xb28700d0UL, 0x2f503869UL, 0x97ec5f0cUL, 0x8559f0e2UL, 0x3de59787UL,+ 0x658687d1UL, 0xdd3ae0b4UL, 0xcf8f4f5aUL, 0x7733283fUL, 0xeae41086UL,+ 0x525877e3UL, 0x40edd80dUL, 0xf851bf68UL, 0xf02bf8a1UL, 0x48979fc4UL,+ 0x5a22302aUL, 0xe29e574fUL, 0x7f496ff6UL, 0xc7f50893UL, 0xd540a77dUL,+ 0x6dfcc018UL, 0x359fd04eUL, 0x8d23b72bUL, 0x9f9618c5UL, 0x272a7fa0UL,+ 0xbafd4719UL, 0x0241207cUL, 0x10f48f92UL, 0xa848e8f7UL, 0x9b14583dUL,+ 0x23a83f58UL, 0x311d90b6UL, 0x89a1f7d3UL, 0x1476cf6aUL, 0xaccaa80fUL,+ 0xbe7f07e1UL, 0x06c36084UL, 0x5ea070d2UL, 0xe61c17b7UL, 0xf4a9b859UL,+ 0x4c15df3cUL, 0xd1c2e785UL, 0x697e80e0UL, 0x7bcb2f0eUL, 0xc377486bUL,+ 0xcb0d0fa2UL, 0x73b168c7UL, 0x6104c729UL, 0xd9b8a04cUL, 0x446f98f5UL,+ 0xfcd3ff90UL, 0xee66507eUL, 0x56da371bUL, 0x0eb9274dUL, 0xb6054028UL,+ 0xa4b0efc6UL, 0x1c0c88a3UL, 0x81dbb01aUL, 0x3967d77fUL, 0x2bd27891UL,+ 0x936e1ff4UL, 0x3b26f703UL, 0x839a9066UL, 0x912f3f88UL, 0x299358edUL,+ 0xb4446054UL, 0x0cf80731UL, 0x1e4da8dfUL, 0xa6f1cfbaUL, 0xfe92dfecUL,+ 0x462eb889UL, 0x549b1767UL, 0xec277002UL, 0x71f048bbUL, 0xc94c2fdeUL,+ 0xdbf98030UL, 0x6345e755UL, 0x6b3fa09cUL, 0xd383c7f9UL, 0xc1366817UL,+ 0x798a0f72UL, 0xe45d37cbUL, 0x5ce150aeUL, 0x4e54ff40UL, 0xf6e89825UL,+ 0xae8b8873UL, 0x1637ef16UL, 0x048240f8UL, 0xbc3e279dUL, 0x21e91f24UL,+ 0x99557841UL, 0x8be0d7afUL, 0x335cb0caUL, 0xed59b63bUL, 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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+ }+};
+ cbits/zconf.h view
@@ -0,0 +1,332 @@+/* zconf.h -- configuration of the zlib compression library+ * Copyright (C) 1995-2005 Jean-loup Gailly.+ * For conditions of distribution and use, see copyright notice in zlib.h+ */++/* @(#) $Id$ */++#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.+ */+#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 deflateBound z_deflateBound+# define deflatePrime z_deflatePrime+# define inflateInit2_ z_inflateInit2_+# define inflateSetDictionary z_inflateSetDictionary+# define inflateSync z_inflateSync+# define inflateSyncPoint z_inflateSyncPoint+# define inflateCopy z_inflateCopy+# define inflateReset z_inflateReset+# define inflateBack z_inflateBack+# define inflateBackEnd z_inflateBackEnd+# define compress z_compress+# define compress2 z_compress2+# define compressBound z_compressBound+# define uncompress z_uncompress+# define adler32 z_adler32+# define crc32 z_crc32+# define get_crc_table z_get_crc_table+# define zError z_zError++# define alloc_func z_alloc_func+# define free_func z_free_func+# define in_func z_in_func+# define out_func z_out_func+# define Byte z_Byte+# define uInt z_uInt+# define uLong z_uLong+# 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(__MSDOS__) && !defined(MSDOS)+# define MSDOS+#endif+#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).+ */+#ifdef SYS16BIT+# define MAXSEG_64K+#endif+#ifdef MSDOS+# define UNALIGNED_OK+#endif++#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 /* 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+#endif++/* Maximum value for memLevel in deflateInit2 */+#ifndef MAX_MEM_LEVEL+# ifdef MAXSEG_64K+# define MAX_MEM_LEVEL 8+# else+# define MAX_MEM_LEVEL 9+# endif+#endif++/* Maximum value for windowBits in deflateInit2 and inflateInit2.+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files+ * created by gzip. (Files created by minigzip can still be extracted by+ * gzip.)+ */+#ifndef MAX_WBITS+# define MAX_WBITS 15 /* 32K LZ77 window */+#endif++/* The memory requirements for deflate are (in bytes):+ (1 << (windowBits+2)) + (1 << (memLevel+9))+ that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)+ plus a few kilobytes for small objects. For example, if you want to reduce+ the default memory requirements from 256K to 128K, compile with+ make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=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+ for small objects.+*/++ /* Type declarations */++#ifndef OF /* function prototypes */+# ifdef STDC+# define OF(args) args+# else+# define OF(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.+ */+#ifdef SYS16BIT+# if defined(M_I86SM) || defined(M_I86MM)+ /* MSC small or medium model */+# define SMALL_MEDIUM+# 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++#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>+ /* No need for _export, use ZLIB.DEF instead. */+ /* For complete Windows compatibility, use WINAPI, not __stdcall. */+# define ZEXPORT WINAPI+# ifdef WIN32+# define ZEXPORTVA WINAPIV+# else+# 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+#endif+#ifndef ZEXPORTVA+# define ZEXPORTVA+#endif++#ifndef FAR+# define FAR+#endif++#if !defined(__MACTYPES__)+typedef unsigned char Byte; /* 8 bits */+#endif+typedef unsigned int uInt; /* 16 bits or more */+typedef unsigned long uLong; /* 32 bits or more */++#ifdef SMALL_MEDIUM+ /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */+# define Bytef Byte FAR+#else+ typedef Byte FAR Bytef;+#endif+typedef char FAR charf;+typedef int FAR intf;+typedef uInt FAR uIntf;+typedef uLong FAR uLongf;++#ifdef STDC+ typedef void const *voidpc;+ typedef void FAR *voidpf;+ typedef void *voidp;+#else+ typedef Byte const *voidpc;+ typedef Byte FAR *voidpf;+ typedef Byte *voidp;+#endif++#if 1 /* HAVE_UNISTD_H -- this line is updated by ./configure */+# include <sys/types.h> /* for off_t */+# include <unistd.h> /* for SEEK_* and off_t */+# ifdef VMS+# include <unixio.h> /* for off_t */+# endif+# define z_off_t off_t+#endif+#ifndef SEEK_SET+# 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+#endif++#if defined(__OS400__)+# define NO_vsnprintf+#endif++#if defined(__MVS__)+# define NO_vsnprintf+# ifdef FAR+# undef FAR+# 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(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 */
+ cbits/zlib.h view
@@ -0,0 +1,1357 @@+/* zlib.h -- interface of the 'zlib' general purpose compression library+ version 1.2.3, July 18th, 2005++ Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler++ This software is provided 'as-is', without any express or implied+ warranty. In no event will the authors be held liable for any damages+ arising from the use of this software.++ Permission is granted to anyone to use this software for any purpose,+ including commercial applications, and to alter it and redistribute it+ freely, subject to the following restrictions:++ 1. The origin of this software must not be misrepresented; you must not+ claim that you wrote the original software. If you use this software+ in a product, an acknowledgment in the product documentation would be+ appreciated but is not required.+ 2. Altered source versions must be plainly marked as such, and must not be+ misrepresented as being the original software.+ 3. This notice may not be removed or altered from any source distribution.++ Jean-loup Gailly Mark Adler+ jloup@gzip.org madler@alumni.caltech.edu+++ The data format used by the zlib library is described by RFCs (Request for+ Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt+ (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).+*/++#ifndef ZLIB_H+#define ZLIB_H++#include "zconf.h"++#ifdef __cplusplus+extern "C" {+#endif++#define ZLIB_VERSION "1.2.3"+#define ZLIB_VERNUM 0x1230++/*+ The 'zlib' compression library provides in-memory compression and+ decompression functions, including integrity checks of the uncompressed+ data. This version of the library supports only one compression method+ (deflation) but other algorithms will be added later and will have the same+ stream interface.++ Compression can be done in a single step if the buffers are large+ enough (for example if an input file is mmap'ed), or can be done by+ repeated calls of the compression function. In the latter case, the+ application must provide more input and/or consume the output+ (providing more output space) before each call.++ The compressed data format used by default by the in-memory functions is+ the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped+ around a deflate stream, which is itself documented in RFC 1951.++ The library also supports reading and writing files in gzip (.gz) format+ with an interface similar to that of stdio using the functions that start+ with "gz". The gzip format is different from the zlib format. gzip is a+ gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.++ This library can optionally read and write gzip streams in memory as well.++ The zlib format was designed to be compact and fast for use in memory+ and on communications channels. The gzip format was designed for single-+ file compression on file systems, has a larger header than zlib to maintain+ directory information, and uses a different, slower check method than zlib.++ The library does not install any signal handler. The decoder checks+ the consistency of the compressed data, so the library should never+ crash even in case of corrupted input.+*/++typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));+typedef void (*free_func) OF((voidpf opaque, voidpf address));++struct internal_state;++typedef struct z_stream_s {+ Bytef *next_in; /* next input byte */+ uInt avail_in; /* number of bytes available at next_in */+ uLong total_in; /* total nb of input bytes read so far */++ Bytef *next_out; /* next output byte should be put there */+ uInt avail_out; /* remaining free space at next_out */+ uLong total_out; /* total nb of bytes output so far */++ char *msg; /* last error message, NULL if no error */+ struct internal_state FAR *state; /* not visible by applications */++ alloc_func zalloc; /* used to allocate the internal state */+ free_func zfree; /* used to free the internal state */+ voidpf opaque; /* private data object passed to zalloc and zfree */++ int data_type; /* best guess about the data type: binary or text */+ uLong adler; /* adler32 value of the uncompressed data */+ uLong reserved; /* reserved for future use */+} z_stream;++typedef z_stream FAR *z_streamp;++/*+ gzip header information passed to and from zlib routines. See RFC 1952+ for more details on the meanings of these fields.+*/+typedef struct gz_header_s {+ int text; /* true if compressed data believed to be text */+ uLong time; /* modification time */+ int xflags; /* extra flags (not used when writing a gzip file) */+ int os; /* operating system */+ Bytef *extra; /* pointer to extra field or Z_NULL if none */+ uInt extra_len; /* extra field length (valid if extra != Z_NULL) */+ uInt extra_max; /* space at extra (only when reading header) */+ Bytef *name; /* pointer to zero-terminated file name or Z_NULL */+ uInt name_max; /* space at name (only when reading header) */+ Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */+ uInt comm_max; /* space at comment (only when reading header) */+ int hcrc; /* true if there was or will be a header crc */+ int done; /* true when done reading gzip header (not used+ when writing a gzip file) */+} gz_header;++typedef gz_header FAR *gz_headerp;++/*+ The application must update next_in and avail_in when avail_in has+ dropped to zero. It must update next_out and avail_out when avail_out+ has dropped to zero. The application must initialize zalloc, zfree and+ opaque before calling the init function. All other fields are set by the+ compression library and must not be updated by the application.++ The opaque value provided by the application will be passed as the first+ parameter for calls of zalloc and zfree. This can be useful for custom+ memory management. The compression library attaches no meaning to the+ opaque value.++ zalloc must return Z_NULL if there is not enough memory for the object.+ If zlib is used in a multi-threaded application, zalloc and zfree must be+ thread safe.++ On 16-bit systems, the functions zalloc and zfree must be able to allocate+ exactly 65536 bytes, but will not be required to allocate more than this+ if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,+ pointers returned by zalloc for objects of exactly 65536 bytes *must*+ have their offset normalized to zero. The default allocation function+ provided by this library ensures this (see zutil.c). To reduce memory+ requirements and avoid any allocation of 64K objects, at the expense of+ compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).++ The fields total_in and total_out can be used for statistics or+ progress reports. After compression, total_in holds the total size of+ the uncompressed data and may be saved for use in the decompressor+ (particularly if the decompressor wants to decompress everything in+ a single step).+*/++ /* constants */++#define Z_NO_FLUSH 0+#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */+#define Z_SYNC_FLUSH 2+#define Z_FULL_FLUSH 3+#define Z_FINISH 4+#define Z_BLOCK 5+/* Allowed flush values; see deflate() and inflate() below for details */++#define Z_OK 0+#define Z_STREAM_END 1+#define Z_NEED_DICT 2+#define Z_ERRNO (-1)+#define Z_STREAM_ERROR (-2)+#define Z_DATA_ERROR (-3)+#define Z_MEM_ERROR (-4)+#define Z_BUF_ERROR (-5)+#define Z_VERSION_ERROR (-6)+/* Return codes for the compression/decompression functions. Negative+ * values are errors, positive values are used for special but normal events.+ */++#define Z_NO_COMPRESSION 0+#define Z_BEST_SPEED 1+#define Z_BEST_COMPRESSION 9+#define Z_DEFAULT_COMPRESSION (-1)+/* compression levels */++#define Z_FILTERED 1+#define Z_HUFFMAN_ONLY 2+#define Z_RLE 3+#define Z_FIXED 4+#define Z_DEFAULT_STRATEGY 0+/* compression strategy; see deflateInit2() below for details */++#define Z_BINARY 0+#define Z_TEXT 1+#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */+#define Z_UNKNOWN 2+/* Possible values of the data_type field (though see inflate()) */++#define Z_DEFLATED 8+/* The deflate compression method (the only one supported in this version) */++#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */++#define zlib_version zlibVersion()+/* for compatibility with versions < 1.0.2 */++ /* basic functions */++ZEXTERN const char * ZEXPORT zlibVersion OF((void));+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.+ If the first character differs, the library code actually used is+ not compatible with the zlib.h header file used by the application.+ This check is automatically made by deflateInit and inflateInit.+ */++/*+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));++ Initializes the internal stream state for compression. The fields+ zalloc, zfree and opaque must be initialized before by the caller.+ If zalloc and zfree are set to Z_NULL, deflateInit updates them to+ use default allocation functions.++ The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:+ 1 gives best speed, 9 gives best compression, 0 gives no compression at+ all (the input data is simply copied a block at a time).+ Z_DEFAULT_COMPRESSION requests a default compromise between speed and+ compression (currently equivalent to level 6).++ deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not+ enough memory, Z_STREAM_ERROR if level is not a valid compression level,+ Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible+ with the version assumed by the caller (ZLIB_VERSION).+ msg is set to null if there is no error message. deflateInit does not+ perform any compression: this will be done by deflate().+*/+++ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));+/*+ deflate compresses as much data as possible, and stops when the input+ buffer becomes empty or the output buffer becomes full. It may introduce some+ output latency (reading input without producing any output) except when+ forced to flush.++ The detailed semantics are as follows. deflate performs one or both of the+ following actions:++ - Compress more input starting at next_in and update next_in and avail_in+ accordingly. If not all input can be processed (because there is not+ enough room in the output buffer), next_in and avail_in are updated and+ processing will resume at this point for the next call of deflate().++ - Provide more output starting at next_out and update next_out and avail_out+ accordingly. This action is forced if the parameter flush is non zero.+ Forcing flush frequently degrades the compression ratio, so this parameter+ should be set only when necessary (in interactive applications).+ Some output may be provided even if flush is not set.++ Before the call of deflate(), the application should ensure that at least+ one of the actions is possible, by providing more input and/or consuming+ more output, and updating avail_in or avail_out accordingly; avail_out+ should never be zero before the call. The application can consume the+ compressed output when it wants, for example when the output buffer is full+ (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK+ and with zero avail_out, it must be called again after making room in the+ output buffer because there might be more output pending.++ Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to+ decide how much data to accumualte before producing output, in order to+ maximize compression.++ If the parameter flush is set to Z_SYNC_FLUSH, all pending output is+ flushed to the output buffer and the output is aligned on a byte boundary, so+ that the decompressor can get all input data available so far. (In particular+ avail_in is zero after the call if enough output space has been provided+ before the call.) Flushing may degrade compression for some compression+ algorithms and so it should be used only when necessary.++ If flush is set to Z_FULL_FLUSH, all output is flushed as with+ Z_SYNC_FLUSH, and the compression state is reset so that decompression can+ restart from this point if previous compressed data has been damaged or if+ random access is desired. Using Z_FULL_FLUSH too often can seriously degrade+ compression.++ If deflate returns with avail_out == 0, this function must be called again+ with the same value of the flush parameter and more output space (updated+ avail_out), until the flush is complete (deflate returns with non-zero+ avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that+ avail_out is greater than six to avoid repeated flush markers due to+ avail_out == 0 on return.++ If the parameter flush is set to Z_FINISH, pending input is processed,+ pending output is flushed and deflate returns with Z_STREAM_END if there+ was enough output space; if deflate returns with Z_OK, this function must be+ called again with Z_FINISH and more output space (updated avail_out) but no+ more input data, until it returns with Z_STREAM_END or an error. After+ deflate has returned Z_STREAM_END, the only possible operations on the+ stream are deflateReset or deflateEnd.++ Z_FINISH can be used immediately after deflateInit if all the compression+ is to be done in a single step. In this case, avail_out must be at least+ the value returned by deflateBound (see below). If deflate does not return+ Z_STREAM_END, then it must be called again as described above.++ deflate() sets strm->adler to the adler32 checksum of all input read+ so far (that is, total_in bytes).++ deflate() may update strm->data_type if it can make a good guess about+ the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered+ binary. This field is only for information purposes and does not affect+ the compression algorithm in any manner.++ deflate() returns Z_OK if some progress has been made (more input+ processed or more output produced), Z_STREAM_END if all input has been+ consumed and all output has been produced (only when flush is set to+ Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example+ if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible+ (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not+ fatal, and deflate() can be called again with more input and more output+ space to continue compressing.+*/+++ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));+/*+ All dynamically allocated data structures for this stream are freed.+ This function discards any unprocessed input and does not flush any+ pending output.++ deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the+ stream state was inconsistent, Z_DATA_ERROR if the stream was freed+ prematurely (some input or output was discarded). In the error case,+ msg may be set but then points to a static string (which must not be+ deallocated).+*/+++/*+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));++ Initializes the internal stream state for decompression. The fields+ next_in, avail_in, zalloc, zfree and opaque must be initialized before by+ the caller. If next_in is not Z_NULL and avail_in is large enough (the exact+ value depends on the compression method), inflateInit determines the+ compression method from the zlib header and allocates all data structures+ accordingly; otherwise the allocation will be deferred to the first call of+ inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to+ use default allocation functions.++ inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough+ memory, Z_VERSION_ERROR if the zlib library version is incompatible with the+ version assumed by the caller. msg is set to null if there is no error+ message. inflateInit does not perform any decompression apart from reading+ the zlib header if present: this will be done by inflate(). (So next_in and+ avail_in may be modified, but next_out and avail_out are unchanged.)+*/+++ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));+/*+ inflate decompresses as much data as possible, and stops when the input+ buffer becomes empty or the output buffer becomes full. It may introduce+ some output latency (reading input without producing any output) except when+ forced to flush.++ The detailed semantics are as follows. inflate performs one or both of the+ following actions:++ - Decompress more input starting at next_in and update next_in and avail_in+ accordingly. If not all input can be processed (because there is not+ enough room in the output buffer), next_in is updated and processing+ will resume at this point for the next call of inflate().++ - Provide more output starting at next_out and update next_out and avail_out+ accordingly. inflate() provides as much output as possible, until there+ is no more input data or no more space in the output buffer (see below+ about the flush parameter).++ Before the call of inflate(), the application should ensure that at least+ one of the actions is possible, by providing more input and/or consuming+ more output, and updating the next_* and avail_* values accordingly.+ The application can consume the uncompressed output when it wants, for+ example when the output buffer is full (avail_out == 0), or after each+ call of inflate(). If inflate returns Z_OK and with zero avail_out, it+ must be called again after making room in the output buffer because there+ might be more output pending.++ The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH,+ Z_FINISH, or Z_BLOCK. Z_SYNC_FLUSH requests that inflate() flush as much+ output as possible to the output buffer. Z_BLOCK requests that inflate() stop+ if and when it gets to the next deflate block boundary. When decoding the+ zlib or gzip format, this will cause inflate() to return immediately after+ the header and before the first block. When doing a raw inflate, inflate()+ will go ahead and process the first block, and will return when it gets to+ the end of that block, or when it runs out of data.++ The Z_BLOCK option assists in appending to or combining deflate streams.+ Also to assist in this, on return inflate() will set strm->data_type to the+ number of unused bits in the last byte taken from strm->next_in, plus 64+ if inflate() is currently decoding the last block in the deflate stream,+ plus 128 if inflate() returned immediately after decoding an end-of-block+ code or decoding the complete header up to just before the first byte of the+ deflate stream. The end-of-block will not be indicated until all of the+ uncompressed data from that block has been written to strm->next_out. The+ number of unused bits may in general be greater than seven, except when+ bit 7 of data_type is set, in which case the number of unused bits will be+ less than eight.++ inflate() should normally be called until it returns Z_STREAM_END or an+ error. However if all decompression is to be performed in a single step+ (a single call of inflate), the parameter flush should be set to+ Z_FINISH. In this case all pending input is processed and all pending+ output is flushed; avail_out must be large enough to hold all the+ uncompressed data. (The size of the uncompressed data may have been saved+ by the compressor for this purpose.) The next operation on this stream must+ be inflateEnd to deallocate the decompression state. The use of Z_FINISH+ is never required, but can be used to inform inflate that a faster approach+ may be used for the single inflate() call.++ In this implementation, inflate() always flushes as much output as+ possible to the output buffer, and always uses the faster approach on the+ first call. So the only effect of the flush parameter in this implementation+ is on the return value of inflate(), as noted below, or when it returns early+ because Z_BLOCK is used.++ If a preset dictionary is needed after this call (see inflateSetDictionary+ below), inflate sets strm->adler to the adler32 checksum of the dictionary+ chosen by the compressor and returns Z_NEED_DICT; otherwise it sets+ strm->adler to the adler32 checksum of all output produced so far (that is,+ total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described+ below. At the end of the stream, inflate() checks that its computed adler32+ checksum is equal to that saved by the compressor and returns Z_STREAM_END+ only if the checksum is correct.++ inflate() will decompress and check either zlib-wrapped or gzip-wrapped+ deflate data. The header type is detected automatically. Any information+ contained in the gzip header is not retained, so applications that need that+ information should instead use raw inflate, see inflateInit2() below, or+ inflateBack() and perform their own processing of the gzip header and+ trailer.++ inflate() returns Z_OK if some progress has been made (more input processed+ or more output produced), Z_STREAM_END if the end of the compressed data has+ been reached and all uncompressed output has been produced, Z_NEED_DICT if a+ preset dictionary is needed at this point, Z_DATA_ERROR if the input data was+ corrupted (input stream not conforming to the zlib format or incorrect check+ value), Z_STREAM_ERROR if the stream structure was inconsistent (for example+ if next_in or next_out was NULL), Z_MEM_ERROR if there was not enough memory,+ Z_BUF_ERROR if no progress is possible or if there was not enough room in the+ output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and+ inflate() can be called again with more input and more output space to+ continue decompressing. If Z_DATA_ERROR is returned, the application may then+ call inflateSync() to look for a good compression block if a partial recovery+ of the data is desired.+*/+++ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));+/*+ All dynamically allocated data structures for this stream are freed.+ This function discards any unprocessed input and does not flush any+ pending output.++ inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state+ was inconsistent. In the error case, msg may be set but then points to a+ static string (which must not be deallocated).+*/++ /* Advanced functions */++/*+ The following functions are needed only in some special applications.+*/++/*+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,+ int level,+ int method,+ int windowBits,+ int memLevel,+ int strategy));++ This is another version of deflateInit with more compression options. The+ fields next_in, zalloc, zfree and opaque must be initialized before by+ the caller.++ The method parameter is the compression method. It must be Z_DEFLATED in+ this version of the library.++ The windowBits parameter is the base two logarithm of the window size+ (the size of the history buffer). It should be in the range 8..15 for this+ version of the library. Larger values of this parameter result in better+ compression at the expense of memory usage. The default value is 15 if+ deflateInit is used instead.++ windowBits can also be -8..-15 for raw deflate. In this case, -windowBits+ determines the window size. deflate() will then generate raw deflate data+ with no zlib header or trailer, and will not compute an adler32 check value.++ windowBits can also be greater than 15 for optional gzip encoding. Add+ 16 to windowBits to write a simple gzip header and trailer around the+ compressed data instead of a zlib wrapper. The gzip header will have no+ file name, no extra data, no comment, no modification time (set to zero),+ no header crc, and the operating system will be set to 255 (unknown). If a+ gzip stream is being written, strm->adler is a crc32 instead of an adler32.++ The memLevel parameter specifies how much memory should be allocated+ for the internal compression state. memLevel=1 uses minimum memory but+ is slow and reduces compression ratio; memLevel=9 uses maximum memory+ for optimal speed. The default value is 8. See zconf.h for total memory+ usage as a function of windowBits and memLevel.++ The strategy parameter is used to tune the compression algorithm. Use the+ value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a+ filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no+ string match), or Z_RLE to limit match distances to one (run-length+ encoding). Filtered data consists mostly of small values with a somewhat+ random distribution. In this case, the compression algorithm is tuned to+ compress them better. The effect of Z_FILTERED is to force more Huffman+ coding and less string matching; it is somewhat intermediate between+ Z_DEFAULT and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as fast as+ Z_HUFFMAN_ONLY, but give better compression for PNG image data. The strategy+ parameter only affects the compression ratio but not the correctness of the+ compressed output even if it is not set appropriately. Z_FIXED prevents the+ use of dynamic Huffman codes, allowing for a simpler decoder for special+ applications.++ deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough+ memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid+ method). msg is set to null if there is no error message. deflateInit2 does+ not perform any compression: this will be done by deflate().+*/++ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,+ const Bytef *dictionary,+ uInt dictLength));+/*+ Initializes the compression dictionary from the given byte sequence+ without producing any compressed output. This function must be called+ immediately after deflateInit, deflateInit2 or deflateReset, before any+ call of deflate. The compressor and decompressor must use exactly the same+ dictionary (see inflateSetDictionary).++ The dictionary should consist of strings (byte sequences) that are likely+ to be encountered later in the data to be compressed, with the most commonly+ used strings preferably put towards the end of the dictionary. Using a+ dictionary is most useful when the data to be compressed is short and can be+ predicted with good accuracy; the data can then be compressed better than+ with the default empty dictionary.++ Depending on the size of the compression data structures selected by+ deflateInit or deflateInit2, a part of the dictionary may in effect be+ discarded, for example if the dictionary is larger than the window size in+ deflate or deflate2. Thus the strings most likely to be useful should be+ put at the end of the dictionary, not at the front. In addition, the+ current implementation of deflate will use at most the window size minus+ 262 bytes of the provided dictionary.++ Upon return of this function, strm->adler is set to the adler32 value+ of the dictionary; the decompressor may later use this value to determine+ which dictionary has been used by the compressor. (The adler32 value+ applies to the whole dictionary even if only a subset of the dictionary is+ actually used by the compressor.) If a raw deflate was requested, then the+ adler32 value is not computed and strm->adler is not set.++ deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a+ parameter is invalid (such as NULL dictionary) or the stream state is+ inconsistent (for example if deflate has already been called for this stream+ or if the compression method is bsort). deflateSetDictionary does not+ perform any compression: this will be done by deflate().+*/++ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,+ z_streamp source));+/*+ Sets the destination stream as a complete copy of the source stream.++ This function can be useful when several compression strategies will be+ tried, for example when there are several ways of pre-processing the input+ data with a filter. The streams that will be discarded should then be freed+ by calling deflateEnd. Note that deflateCopy duplicates the internal+ compression state which can be quite large, so this strategy is slow and+ can consume lots of memory.++ deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not+ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent+ (such as zalloc being NULL). msg is left unchanged in both source and+ destination.+*/++ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));+/*+ This function is equivalent to deflateEnd followed by deflateInit,+ but does not free and reallocate all the internal compression state.+ The stream will keep the same compression level and any other attributes+ that may have been set by deflateInit2.++ deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source+ stream state was inconsistent (such as zalloc or state being NULL).+*/++ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,+ int level,+ int strategy));+/*+ Dynamically update the compression level and compression strategy. The+ interpretation of level and strategy is as in deflateInit2. This can be+ used to switch between compression and straight copy of the input data, or+ to switch to a different kind of input data requiring a different+ strategy. If the compression level is changed, the input available so far+ is compressed with the old level (and may be flushed); the new level will+ take effect only at the next call of deflate().++ Before the call of deflateParams, the stream state must be set as for+ a call of deflate(), since the currently available input may have to+ be compressed and flushed. In particular, strm->avail_out must be non-zero.++ deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source+ stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR+ if strm->avail_out was zero.+*/++ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,+ int good_length,+ int max_lazy,+ int nice_length,+ int max_chain));+/*+ Fine tune deflate's internal compression parameters. This should only be+ used by someone who understands the algorithm used by zlib's deflate for+ searching for the best matching string, and even then only by the most+ fanatic optimizer trying to squeeze out the last compressed bit for their+ specific input data. Read the deflate.c source code for the meaning of the+ max_lazy, good_length, nice_length, and max_chain parameters.++ deflateTune() can be called after deflateInit() or deflateInit2(), and+ returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.+ */++ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,+ uLong sourceLen));+/*+ deflateBound() returns an upper bound on the compressed size after+ deflation of sourceLen bytes. It must be called after deflateInit()+ or deflateInit2(). This would be used to allocate an output buffer+ for deflation in a single pass, and so would be called before deflate().+*/++ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,+ int bits,+ int value));+/*+ deflatePrime() inserts bits in the deflate output stream. The intent+ is that this function is used to start off the deflate output with the+ bits leftover from a previous deflate stream when appending to it. As such,+ this function can only be used for raw deflate, and must be used before the+ first deflate() call after a deflateInit2() or deflateReset(). bits must be+ less than or equal to 16, and that many of the least significant bits of+ value will be inserted in the output.++ deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source+ stream state was inconsistent.+*/++ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,+ gz_headerp head));+/*+ deflateSetHeader() provides gzip header information for when a gzip+ stream is requested by deflateInit2(). deflateSetHeader() may be called+ after deflateInit2() or deflateReset() and before the first call of+ deflate(). The text, time, os, extra field, name, and comment information+ in the provided gz_header structure are written to the gzip header (xflag is+ ignored -- the extra flags are set according to the compression level). The+ caller must assure that, if not Z_NULL, name and comment are terminated with+ a zero byte, and that if extra is not Z_NULL, that extra_len bytes are+ available there. If hcrc is true, a gzip header crc is included. Note that+ the current versions of the command-line version of gzip (up through version+ 1.3.x) do not support header crc's, and will report that it is a "multi-part+ gzip file" and give up.++ If deflateSetHeader is not used, the default gzip header has text false,+ the time set to zero, and os set to 255, with no extra, name, or comment+ fields. The gzip header is returned to the default state by deflateReset().++ deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source+ stream state was inconsistent.+*/++/*+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,+ int windowBits));++ This is another version of inflateInit with an extra parameter. The+ fields next_in, avail_in, zalloc, zfree and opaque must be initialized+ before by the caller.++ The windowBits parameter is the base two logarithm of the maximum window+ size (the size of the history buffer). It should be in the range 8..15 for+ this version of the library. The default value is 15 if inflateInit is used+ instead. windowBits must be greater than or equal to the windowBits value+ provided to deflateInit2() while compressing, or it must be equal to 15 if+ deflateInit2() was not used. If a compressed stream with a larger window+ size is given as input, inflate() will return with the error code+ Z_DATA_ERROR instead of trying to allocate a larger window.++ windowBits can also be -8..-15 for raw inflate. In this case, -windowBits+ determines the window size. inflate() will then process raw deflate data,+ not looking for a zlib or gzip header, not generating a check value, and not+ looking for any check values for comparison at the end of the stream. This+ is for use with other formats that use the deflate compressed data format+ such as zip. Those formats provide their own check values. If a custom+ format is developed using the raw deflate format for compressed data, it is+ recommended that a check value such as an adler32 or a crc32 be applied to+ the uncompressed data as is done in the zlib, gzip, and zip formats. For+ most applications, the zlib format should be used as is. Note that comments+ above on the use in deflateInit2() applies to the magnitude of windowBits.++ windowBits can also be greater than 15 for optional gzip decoding. Add+ 32 to windowBits to enable zlib and gzip decoding with automatic header+ detection, or add 16 to decode only the gzip format (the zlib format will+ return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is+ a crc32 instead of an adler32.++ inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough+ memory, Z_STREAM_ERROR if a parameter is invalid (such as a null strm). msg+ is set to null if there is no error message. inflateInit2 does not perform+ any decompression apart from reading the zlib header if present: this will+ be done by inflate(). (So next_in and avail_in may be modified, but next_out+ and avail_out are unchanged.)+*/++ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,+ const Bytef *dictionary,+ uInt dictLength));+/*+ Initializes the decompression dictionary from the given uncompressed byte+ sequence. This function must be called immediately after a call of inflate,+ if that call returned Z_NEED_DICT. The dictionary chosen by the compressor+ can be determined from the adler32 value returned by that call of inflate.+ The compressor and decompressor must use exactly the same dictionary (see+ deflateSetDictionary). For raw inflate, this function can be called+ immediately after inflateInit2() or inflateReset() and before any call of+ inflate() to set the dictionary. The application must insure that the+ dictionary that was used for compression is provided.++ inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a+ parameter is invalid (such as NULL dictionary) or the stream state is+ inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the+ expected one (incorrect adler32 value). inflateSetDictionary does not+ perform any decompression: this will be done by subsequent calls of+ inflate().+*/++ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));+/*+ Skips invalid compressed data until a full flush point (see above the+ description of deflate with Z_FULL_FLUSH) can be found, or until all+ available input is skipped. No output is provided.++ inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR+ if no more input was provided, Z_DATA_ERROR if no flush point has been found,+ or Z_STREAM_ERROR if the stream structure was inconsistent. In the success+ case, the application may save the current current value of total_in which+ indicates where valid compressed data was found. In the error case, the+ application may repeatedly call inflateSync, providing more input each time,+ until success or end of the input data.+*/++ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,+ z_streamp source));+/*+ Sets the destination stream as a complete copy of the source stream.++ This function can be useful when randomly accessing a large stream. The+ first pass through the stream can periodically record the inflate state,+ allowing restarting inflate at those points when randomly accessing the+ stream.++ inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not+ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent+ (such as zalloc being NULL). msg is left unchanged in both source and+ destination.+*/++ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));+/*+ This function is equivalent to inflateEnd followed by inflateInit,+ but does not free and reallocate all the internal decompression state.+ The stream will keep attributes that may have been set by inflateInit2.++ inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source+ stream state was inconsistent (such as zalloc or state being NULL).+*/++ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,+ int bits,+ int value));+/*+ This function inserts bits in the inflate input stream. The intent is+ that this function is used to start inflating at a bit position in the+ middle of a byte. The provided bits will be used before any bytes are used+ from next_in. This function should only be used with raw inflate, and+ should be used before the first inflate() call after inflateInit2() or+ inflateReset(). bits must be less than or equal to 16, and that many of the+ least significant bits of value will be inserted in the input.++ inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source+ stream state was inconsistent.+*/++ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,+ gz_headerp head));+/*+ inflateGetHeader() requests that gzip header information be stored in the+ provided gz_header structure. inflateGetHeader() may be called after+ inflateInit2() or inflateReset(), and before the first call of inflate().+ As inflate() processes the gzip stream, head->done is zero until the header+ is completed, at which time head->done is set to one. If a zlib stream is+ being decoded, then head->done is set to -1 to indicate that there will be+ no gzip header information forthcoming. Note that Z_BLOCK can be used to+ force inflate() to return immediately after header processing is complete+ and before any actual data is decompressed.++ The text, time, xflags, and os fields are filled in with the gzip header+ contents. hcrc is set to true if there is a header CRC. (The header CRC+ was valid if done is set to one.) If extra is not Z_NULL, then extra_max+ contains the maximum number of bytes to write to extra. Once done is true,+ extra_len contains the actual extra field length, and extra contains the+ extra field, or that field truncated if extra_max is less than extra_len.+ If name is not Z_NULL, then up to name_max characters are written there,+ terminated with a zero unless the length is greater than name_max. If+ comment is not Z_NULL, then up to comm_max characters are written there,+ terminated with a zero unless the length is greater than comm_max. When+ any of extra, name, or comment are not Z_NULL and the respective field is+ not present in the header, then that field is set to Z_NULL to signal its+ absence. This allows the use of deflateSetHeader() with the returned+ structure to duplicate the header. However if those fields are set to+ allocated memory, then the application will need to save those pointers+ elsewhere so that they can be eventually freed.++ If inflateGetHeader is not used, then the header information is simply+ discarded. The header is always checked for validity, including the header+ CRC if present. inflateReset() will reset the process to discard the header+ information. The application would need to call inflateGetHeader() again to+ retrieve the header from the next gzip stream.++ inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source+ stream state was inconsistent.+*/++/*+ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,+ unsigned char FAR *window));++ Initialize the internal stream state for decompression using inflateBack()+ calls. The fields zalloc, zfree and opaque in strm must be initialized+ before the call. If zalloc and zfree are Z_NULL, then the default library-+ derived memory allocation routines are used. windowBits is the base two+ logarithm of the window size, in the range 8..15. window is a caller+ supplied buffer of that size. Except for special applications where it is+ assured that deflate was used with small window sizes, windowBits must be 15+ and a 32K byte window must be supplied to be able to decompress general+ deflate streams.++ See inflateBack() for the usage of these routines.++ inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of+ the paramaters are invalid, Z_MEM_ERROR if the internal state could not+ be allocated, or Z_VERSION_ERROR if the version of the library does not+ match the version of the header file.+*/++typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));+typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));++ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,+ in_func in, void FAR *in_desc,+ out_func out, void FAR *out_desc));+/*+ inflateBack() does a raw inflate with a single call using a call-back+ interface for input and output. This is more efficient than inflate() for+ file i/o applications in that it avoids copying between the output and the+ sliding window by simply making the window itself the output buffer. This+ function trusts the application to not change the output buffer passed by+ the output function, at least until inflateBack() returns.++ inflateBackInit() must be called first to allocate the internal state+ and to initialize the state with the user-provided window buffer.+ inflateBack() may then be used multiple times to inflate a complete, raw+ deflate stream with each call. inflateBackEnd() is then called to free+ the allocated state.++ A raw deflate stream is one with no zlib or gzip header or trailer.+ This routine would normally be used in a utility that reads zip or gzip+ files and writes out uncompressed files. The utility would decode the+ header and process the trailer on its own, hence this routine expects+ only the raw deflate stream to decompress. This is different from the+ normal behavior of inflate(), which expects either a zlib or gzip header and+ trailer around the deflate stream.++ inflateBack() uses two subroutines supplied by the caller that are then+ called by inflateBack() for input and output. inflateBack() calls those+ routines until it reads a complete deflate stream and writes out all of the+ uncompressed data, or until it encounters an error. The function's+ parameters and return types are defined above in the in_func and out_func+ typedefs. inflateBack() will call in(in_desc, &buf) which should return the+ number of bytes of provided input, and a pointer to that input in buf. If+ there is no input available, in() must return zero--buf is ignored in that+ case--and inflateBack() will return a buffer error. inflateBack() will call+ out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()+ should return zero on success, or non-zero on failure. If out() returns+ non-zero, inflateBack() will return with an error. Neither in() nor out()+ are permitted to change the contents of the window provided to+ inflateBackInit(), which is also the buffer that out() uses to write from.+ The length written by out() will be at most the window size. Any non-zero+ amount of input may be provided by in().++ For convenience, inflateBack() can be provided input on the first call by+ setting strm->next_in and strm->avail_in. If that input is exhausted, then+ in() will be called. Therefore strm->next_in must be initialized before+ calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called+ immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in+ must also be initialized, and then if strm->avail_in is not zero, input will+ initially be taken from strm->next_in[0 .. strm->avail_in - 1].++ The in_desc and out_desc parameters of inflateBack() is passed as the+ first parameter of in() and out() respectively when they are called. These+ descriptors can be optionally used to pass any information that the caller-+ supplied in() and out() functions need to do their job.++ On return, inflateBack() will set strm->next_in and strm->avail_in to+ pass back any unused input that was provided by the last in() call. The+ return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR+ if in() or out() returned an error, Z_DATA_ERROR if there was a format+ error in the deflate stream (in which case strm->msg is set to indicate the+ nature of the error), or Z_STREAM_ERROR if the stream was not properly+ initialized. In the case of Z_BUF_ERROR, an input or output error can be+ distinguished using strm->next_in which will be Z_NULL only if in() returned+ an error. If strm->next is not Z_NULL, then the Z_BUF_ERROR was due to+ out() returning non-zero. (in() will always be called before out(), so+ strm->next_in is assured to be defined if out() returns non-zero.) Note+ that inflateBack() cannot return Z_OK.+*/++ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));+/*+ All memory allocated by inflateBackInit() is freed.++ inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream+ state was inconsistent.+*/++ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));+/* Return flags indicating compile-time options.++ Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:+ 1.0: size of uInt+ 3.2: size of uLong+ 5.4: size of voidpf (pointer)+ 7.6: size of z_off_t++ Compiler, assembler, and debug options:+ 8: DEBUG+ 9: ASMV or ASMINF -- use ASM code+ 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention+ 11: 0 (reserved)++ One-time table building (smaller code, but not thread-safe if true):+ 12: BUILDFIXED -- build static block decoding tables when needed+ 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed+ 14,15: 0 (reserved)++ Library content (indicates missing functionality):+ 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking+ deflate code when not needed)+ 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect+ and decode gzip streams (to avoid linking crc code)+ 18-19: 0 (reserved)++ Operation variations (changes in library functionality):+ 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate+ 21: FASTEST -- deflate algorithm with only one, lowest compression level+ 22,23: 0 (reserved)++ The sprintf variant used by gzprintf (zero is best):+ 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format+ 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!+ 26: 0 = returns value, 1 = void -- 1 means inferred string length returned++ Remainder:+ 27-31: 0 (reserved)+ */+++ /* utility functions */++/*+ The following utility functions are implemented on top of the+ basic stream-oriented functions. To simplify the interface, some+ default options are assumed (compression level and memory usage,+ standard memory allocation functions). The source code of these+ utility functions can easily be modified if you need special options.+*/++ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,+ const Bytef *source, uLong sourceLen));+/*+ Compresses 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 at least the value returned+ by compressBound(sourceLen). Upon exit, destLen is the actual size of the+ compressed buffer.+ This function can be used to compress a whole file at once if the+ input file is mmap'ed.+ compress 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.+*/++ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,+ const Bytef *source, uLong sourceLen,+ int level));+/*+ Compresses the source buffer into the destination buffer. The level+ parameter has the same meaning as in deflateInit. sourceLen is the byte+ length of the source buffer. Upon entry, destLen is the total size of the+ destination buffer, which must be at least the value returned by+ compressBound(sourceLen). Upon exit, destLen is the actual size of the+ compressed buffer.++ compress2 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,+ Z_STREAM_ERROR if the level parameter is invalid.+*/++ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));+/*+ compressBound() returns an upper bound on the compressed size after+ compress() or compress2() on sourceLen bytes. It would be used before+ a compress() or compress2() call to allocate the destination buffer.+*/++ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,+ const Bytef *source, uLong sourceLen));+/*+ 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 actual size of the compressed buffer.+ This function can be used to decompress a whole file at once if the+ input file is mmap'ed.++ 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 or incomplete.+*/+++typedef voidp gzFile;++ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));+/*+ Opens a gzip (.gz) file for reading or writing. The mode parameter+ is as in fopen ("rb" or "wb") but can also include a compression level+ ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for+ Huffman only compression as in "wb1h", or 'R' for run-length encoding+ as in "wb1R". (See the description of deflateInit2 for more information+ about the strategy parameter.)++ gzopen can be used to read a file which is not in gzip format; in this+ case gzread will directly read from the file without decompression.++ gzopen returns NULL if the file could not be opened or if there was+ insufficient memory to allocate the (de)compression state; errno+ can be checked to distinguish the two cases (if errno is zero, the+ zlib error is Z_MEM_ERROR). */++ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));+/*+ gzdopen() associates a gzFile with the file descriptor fd. File+ descriptors are obtained from calls like open, dup, creat, pipe or+ fileno (in the file has been previously opened with fopen).+ The mode parameter is as in gzopen.+ The next call of gzclose on the returned gzFile will also close the+ file descriptor fd, just like fclose(fdopen(fd), mode) closes the file+ descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode).+ gzdopen returns NULL if there was insufficient memory to allocate+ the (de)compression state.+*/++ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));+/*+ Dynamically update the compression level or strategy. See the description+ of deflateInit2 for the meaning of these parameters.+ gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not+ opened for writing.+*/++ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));+/*+ Reads the given number of uncompressed bytes from the compressed file.+ If the input file was not in gzip format, gzread copies the given number+ of bytes into the buffer.+ gzread returns the number of uncompressed bytes actually read (0 for+ end of file, -1 for error). */++ZEXTERN int ZEXPORT gzwrite OF((gzFile file,+ voidpc buf, unsigned len));+/*+ Writes the given number of uncompressed bytes into the compressed file.+ gzwrite returns the number of uncompressed bytes actually written+ (0 in case of error).+*/++ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));+/*+ Converts, formats, and writes the args to the compressed file under+ control of the format string, as in fprintf. gzprintf returns the number of+ uncompressed bytes actually written (0 in case of error). The number of+ uncompressed bytes written is limited to 4095. The caller should assure that+ this limit is not exceeded. If it is exceeded, then gzprintf() will return+ return an error (0) with nothing written. In this case, there may also be a+ buffer overflow with unpredictable consequences, which is possible only if+ zlib was compiled with the insecure functions sprintf() or vsprintf()+ because the secure snprintf() or vsnprintf() functions were not available.+*/++ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));+/*+ Writes the given null-terminated string to the compressed file, excluding+ the terminating null character.+ gzputs returns the number of characters written, or -1 in case of error.+*/++ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));+/*+ Reads bytes from the compressed file until len-1 characters are read, or+ a newline character is read and transferred to buf, or an end-of-file+ condition is encountered. The string is then terminated with a null+ character.+ gzgets returns buf, or Z_NULL in case of error.+*/++ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));+/*+ Writes c, converted to an unsigned char, into the compressed file.+ gzputc returns the value that was written, or -1 in case of error.+*/++ZEXTERN int ZEXPORT gzgetc OF((gzFile file));+/*+ Reads one byte from the compressed file. gzgetc returns this byte+ or -1 in case of end of file or error.+*/++ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));+/*+ Push one character back onto the stream to be read again later.+ Only one character of push-back is allowed. gzungetc() returns the+ character pushed, or -1 on failure. gzungetc() will fail if a+ character has been pushed but not read yet, or if c is -1. The pushed+ character will be discarded if the stream is repositioned with gzseek()+ or gzrewind().+*/++ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));+/*+ Flushes all pending output into the compressed file. The parameter+ flush is as in the deflate() function. The return value is the zlib+ error number (see function gzerror below). gzflush returns Z_OK if+ the flush parameter is Z_FINISH and all output could be flushed.+ gzflush should be called only when strictly necessary because it can+ degrade compression.+*/++ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,+ z_off_t offset, int whence));+/*+ Sets the starting position for the next gzread or gzwrite on the+ given compressed file. The offset represents a number of bytes in the+ uncompressed data stream. The whence parameter is defined as in lseek(2);+ the value SEEK_END is not supported.+ If the file is opened for reading, this function is emulated but can be+ extremely slow. If the file is opened for writing, only forward seeks are+ supported; gzseek then compresses a sequence of zeroes up to the new+ starting position.++ gzseek returns the resulting offset location as measured in bytes from+ the beginning of the uncompressed stream, or -1 in case of error, in+ particular if the file is opened for writing and the new starting position+ would be before the current position.+*/++ZEXTERN int ZEXPORT gzrewind OF((gzFile file));+/*+ Rewinds the given file. This function is supported only for reading.++ gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)+*/++ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));+/*+ Returns the starting position for the next gzread or gzwrite on the+ given compressed file. This position represents a number of bytes in the+ uncompressed data stream.++ gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)+*/++ZEXTERN int ZEXPORT gzeof OF((gzFile file));+/*+ Returns 1 when EOF has previously been detected reading the given+ input stream, otherwise zero.+*/++ZEXTERN int ZEXPORT gzdirect OF((gzFile file));+/*+ Returns 1 if file is being read directly without decompression, otherwise+ zero.+*/++ZEXTERN int ZEXPORT gzclose OF((gzFile file));+/*+ Flushes all pending output if necessary, closes the compressed file+ and deallocates all the (de)compression state. The return value is the zlib+ error number (see function gzerror below).+*/++ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));+/*+ Returns the error message for the last error which occurred on the+ given compressed file. errnum is set to zlib error number. If an+ error occurred in the file system and not in the compression library,+ errnum is set to Z_ERRNO and the application may consult errno+ to get the exact error code.+*/++ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));+/*+ Clears the error and end-of-file flags for file. This is analogous to the+ clearerr() function in stdio. This is useful for continuing to read a gzip+ file that is being written concurrently.+*/++ /* checksum functions */++/*+ These functions are not related to compression but are exported+ anyway because they might be useful in applications using the+ compression library.+*/++ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));+/*+ Update a running Adler-32 checksum with the bytes buf[0..len-1] and+ return the updated checksum. If buf is NULL, this function returns+ the required initial value for the checksum.+ An Adler-32 checksum is almost as reliable as a CRC32 but can be computed+ much faster. Usage example:++ uLong adler = adler32(0L, Z_NULL, 0);++ while (read_buffer(buffer, length) != EOF) {+ adler = adler32(adler, buffer, length);+ }+ if (adler != original_adler) error();+*/++ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,+ z_off_t len2));+/*+ Combine two Adler-32 checksums into one. For two sequences of bytes, seq1+ and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for+ each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of+ seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.+*/++ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));+/*+ Update a running CRC-32 with the bytes buf[0..len-1] and return the+ updated CRC-32. If buf is NULL, this function returns the required initial+ value for the for the crc. Pre- and post-conditioning (one's complement) is+ performed within this function so it shouldn't be done by the application.+ Usage example:++ uLong crc = crc32(0L, Z_NULL, 0);++ while (read_buffer(buffer, length) != EOF) {+ crc = crc32(crc, buffer, length);+ }+ if (crc != original_crc) error();+*/++ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));++/*+ Combine two CRC-32 check values into one. For two sequences of bytes,+ seq1 and seq2 with lengths len1 and len2, CRC-32 check values were+ calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32+ check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and+ len2.+*/+++ /* various hacks, don't look :) */++/* deflateInit and inflateInit are macros to allow checking the zlib version+ * and the compiler's view of z_stream:+ */+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,+ const char *version, int stream_size));+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,+ const char *version, int stream_size));+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,+ int windowBits, int memLevel,+ int strategy, const char *version,+ int stream_size));+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,+ const char *version, int stream_size));+ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,+ unsigned char FAR *window,+ const char *version,+ int stream_size));+#define deflateInit(strm, level) \+ deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream))+#define inflateInit(strm) \+ inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream))+#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \+ deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\+ (strategy), ZLIB_VERSION, sizeof(z_stream))+#define inflateInit2(strm, windowBits) \+ inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))+#define inflateBackInit(strm, windowBits, window) \+ inflateBackInit_((strm), (windowBits), (window), \+ ZLIB_VERSION, sizeof(z_stream))+++#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)+ struct internal_state {int dummy;}; /* hack for buggy compilers */+#endif++ZEXTERN const char * ZEXPORT zError OF((int));+ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp z));+ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void));++#ifdef __cplusplus+}+#endif++#endif /* ZLIB_H */
+ digest.cabal view
@@ -0,0 +1,39 @@+name: digest+version: 0.0.0.1+copyright: (c) 2008 Eugene Kirpichov+license: BSD3+license-file: LICENSE+author: Eugene Kirpichov <ekirpichov@gmail.com>+maintainer: Eugene Kirpichov <ekirpichov@gmail.com>+category: Cryptography+synopsis: Various cryptographic hashes for bytestrings; CRC32 and Adler32 for now.+description: This package provides efficient cryptographic hash implementations for + strict and lazy bytestrings. For now, CRC32 and Adler32 are supported; + they are implemented as FFI bindings to efficient code from zlib.+stability: provisional+build-type: Simple+cabal-version: >= 1.2.1+extra-source-files: cbits/crc32.h +flag bytestring-in-base+ description: In the ghc-6.6 era the bytestring modules were+ included in the base package.++library+ exposed-modules: Data.Digest.CRC32,+ Data.Digest.Adler32+ extensions: CPP, ForeignFunctionInterface+ build-depends: base < 5+ if flag(bytestring-in-base)+ -- bytestring was in base-2.0 and 2.1.1+ build-depends: base >= 2.0 && < 2.2+ cpp-options: -DBYTESTRING_IN_BASE+ else+ build-depends: base < 2.0 || >= 2.2, bytestring >= 0.9+ includes: zlib.h+ ghc-options: -Wall+ if !os(windows)+ extra-libraries: z+ else+ c-sources: cbits/adler32.c cbits/crc32.c+ include-dirs: cbits+ install-includes: zlib.h zconf.h