| [8ebc79b] | 1 | /* zutil.h -- internal interface and configuration of the compression library |
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| 2 | * Copyright (C) 1995-2013 Jean-loup Gailly. |
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| 3 | * For conditions of distribution and use, see copyright notice in zlib.h |
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| 4 | */ |
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| 5 | |
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| 6 | /* WARNING: this file should *not* be used by applications. It is |
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| 7 | part of the implementation of the compression library and is |
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| 8 | subject to change. Applications should only use zlib.h. |
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| 9 | */ |
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| 10 | |
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| 11 | /* @(#) $Id$ */ |
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| 12 | |
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| 13 | #ifndef ZUTIL_H |
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| 14 | #define ZUTIL_H |
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| 15 | |
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| 16 | #ifdef HAVE_HIDDEN |
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| 17 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) |
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| 18 | #else |
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| 19 | # define ZLIB_INTERNAL |
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| 20 | #endif |
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| 21 | |
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| 22 | #include "zlib.h" |
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| 23 | |
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| 24 | #if defined(STDC) && !defined(Z_SOLO) |
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| 25 | # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) |
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| 26 | # include <stddef.h> |
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| 27 | # endif |
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| 28 | # include <string.h> |
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| 29 | # include <stdlib.h> |
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| 30 | #endif |
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| 31 | |
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| 32 | #ifdef Z_SOLO |
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| 33 | typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ |
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| 34 | #endif |
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| 35 | |
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| 36 | #ifndef local |
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| 37 | # define local static |
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| 38 | #endif |
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| 39 | /* compile with -Dlocal if your debugger can't find static symbols */ |
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| 40 | |
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| 41 | typedef unsigned char uch; |
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| 42 | typedef uch FAR uchf; |
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| 43 | typedef unsigned short ush; |
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| 44 | typedef ush FAR ushf; |
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| 45 | typedef unsigned long ulg; |
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| 46 | |
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| 47 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
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| 48 | /* (size given to avoid silly warnings with Visual C++) */ |
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| 49 | |
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| 50 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
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| 51 | |
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| 52 | #define ERR_RETURN(strm,err) \ |
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| 53 | return (strm->msg = ERR_MSG(err), (err)) |
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| 54 | /* To be used only when the state is known to be valid */ |
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| 55 | |
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| 56 | /* common constants */ |
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| 57 | |
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| 58 | #ifndef DEF_WBITS |
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| 59 | # define DEF_WBITS MAX_WBITS |
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| 60 | #endif |
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| 61 | /* default windowBits for decompression. MAX_WBITS is for compression only */ |
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| 62 | |
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| 63 | #if MAX_MEM_LEVEL >= 8 |
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| 64 | # define DEF_MEM_LEVEL 8 |
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| 65 | #else |
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| 66 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
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| 67 | #endif |
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| 68 | /* default memLevel */ |
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| 69 | |
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| 70 | #define STORED_BLOCK 0 |
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| 71 | #define STATIC_TREES 1 |
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| 72 | #define DYN_TREES 2 |
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| 73 | /* The three kinds of block type */ |
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| 74 | |
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| 75 | #define MIN_MATCH 3 |
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| 76 | #define MAX_MATCH 258 |
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| 77 | /* The minimum and maximum match lengths */ |
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| 78 | |
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| 79 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
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| 80 | |
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| 81 | /* target dependencies */ |
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| 82 | |
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| 83 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
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| 84 | # define OS_CODE 0x00 |
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| 85 | # ifndef Z_SOLO |
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| 86 | # if defined(__TURBOC__) || defined(__BORLANDC__) |
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| 87 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
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| 88 | /* Allow compilation with ANSI keywords only enabled */ |
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| 89 | void _Cdecl farfree( void *block ); |
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| 90 | void *_Cdecl farmalloc( unsigned long nbytes ); |
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| 91 | # else |
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| 92 | # include <alloc.h> |
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| 93 | # endif |
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| 94 | # else /* MSC or DJGPP */ |
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| 95 | # include <malloc.h> |
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| 96 | # endif |
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| 97 | # endif |
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| 98 | #endif |
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| 99 | |
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| 100 | #ifdef AMIGA |
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| 101 | # define OS_CODE 0x01 |
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| 102 | #endif |
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| 103 | |
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| 104 | #if defined(VAXC) || defined(VMS) |
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| 105 | # define OS_CODE 0x02 |
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| 106 | # define F_OPEN(name, mode) \ |
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| 107 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
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| 108 | #endif |
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| 109 | |
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| 110 | #if defined(ATARI) || defined(atarist) |
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| 111 | # define OS_CODE 0x05 |
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| 112 | #endif |
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| 113 | |
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| 114 | #ifdef OS2 |
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| 115 | # define OS_CODE 0x06 |
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| 116 | # if defined(M_I86) && !defined(Z_SOLO) |
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| 117 | # include <malloc.h> |
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| 118 | # endif |
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| 119 | #endif |
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| 120 | |
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| 121 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
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| 122 | # define OS_CODE 0x07 |
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| 123 | # ifndef Z_SOLO |
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| 124 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
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| 125 | # include <unix.h> /* for fdopen */ |
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| 126 | # else |
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| 127 | # ifndef fdopen |
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| 128 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
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| 129 | # endif |
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| 130 | # endif |
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| 131 | # endif |
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| 132 | #endif |
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| 133 | |
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| 134 | #ifdef TOPS20 |
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| 135 | # define OS_CODE 0x0a |
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| 136 | #endif |
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| 137 | |
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| 138 | #ifdef WIN32 |
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| 139 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ |
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| 140 | # define OS_CODE 0x0b |
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| 141 | # endif |
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| 142 | #endif |
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| 143 | |
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| 144 | #ifdef __50SERIES /* Prime/PRIMOS */ |
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| 145 | # define OS_CODE 0x0f |
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| 146 | #endif |
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| 147 | |
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| 148 | #if defined(_BEOS_) || defined(RISCOS) |
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| 149 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
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| 150 | #endif |
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| 151 | |
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| 152 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX |
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| 153 | # if defined(_WIN32_WCE) |
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| 154 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
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| 155 | # ifndef _PTRDIFF_T_DEFINED |
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| 156 | typedef int ptrdiff_t; |
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| 157 | # define _PTRDIFF_T_DEFINED |
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| 158 | # endif |
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| 159 | # else |
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| 160 | # define fdopen(fd,type) _fdopen(fd,type) |
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| 161 | # endif |
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| 162 | #endif |
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| 163 | |
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| 164 | #if defined(__BORLANDC__) && !defined(MSDOS) |
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| 165 | #pragma warn -8004 |
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| 166 | #pragma warn -8008 |
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| 167 | #pragma warn -8066 |
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| 168 | #endif |
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| 169 | |
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| 170 | /* provide prototypes for these when building zlib without LFS */ |
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| 171 | #if !defined(_WIN32) && \ |
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| 172 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) |
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| 173 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); |
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| 174 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); |
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| 175 | #endif |
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| 176 | |
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| 177 | /* common defaults */ |
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| 178 | |
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| 179 | #ifndef OS_CODE |
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| 180 | # define OS_CODE 0x03 /* assume Unix */ |
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| 181 | #endif |
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| 182 | |
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| 183 | #ifndef F_OPEN |
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| 184 | # define F_OPEN(name, mode) fopen((name), (mode)) |
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| 185 | #endif |
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| 186 | |
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| 187 | /* functions */ |
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| 188 | |
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| 189 | #if defined(pyr) || defined(Z_SOLO) |
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| 190 | # define NO_MEMCPY |
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| 191 | #endif |
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| 192 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
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| 193 | /* Use our own functions for small and medium model with MSC <= 5.0. |
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| 194 | * You may have to use the same strategy for Borland C (untested). |
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| 195 | * The __SC__ check is for Symantec. |
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| 196 | */ |
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| 197 | # define NO_MEMCPY |
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| 198 | #endif |
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| 199 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
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| 200 | # define HAVE_MEMCPY |
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| 201 | #endif |
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| 202 | #ifdef HAVE_MEMCPY |
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| 203 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
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| 204 | # define zmemcpy _fmemcpy |
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| 205 | # define zmemcmp _fmemcmp |
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| 206 | # define zmemzero(dest, len) _fmemset(dest, 0, len) |
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| 207 | # else |
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| 208 | # define zmemcpy memcpy |
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| 209 | # define zmemcmp memcmp |
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| 210 | # define zmemzero(dest, len) memset(dest, 0, len) |
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| 211 | # endif |
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| 212 | #else |
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| 213 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
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| 214 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
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| 215 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); |
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| 216 | #endif |
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| 217 | |
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| 218 | /* Diagnostic functions */ |
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| 219 | #ifdef DEBUG |
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| 220 | # include <stdio.h> |
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| 221 | extern int ZLIB_INTERNAL z_verbose; |
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| 222 | extern void ZLIB_INTERNAL z_error OF((char *m)); |
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| 223 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
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| 224 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} |
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| 225 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} |
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| 226 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
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| 227 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
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| 228 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
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| 229 | #else |
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| 230 | # define Assert(cond,msg) |
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| 231 | # define Trace(x) |
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| 232 | # define Tracev(x) |
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| 233 | # define Tracevv(x) |
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| 234 | # define Tracec(c,x) |
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| 235 | # define Tracecv(c,x) |
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| 236 | #endif |
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| 237 | |
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| 238 | #ifndef Z_SOLO |
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| 239 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, |
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| 240 | unsigned size)); |
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| 241 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); |
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| 242 | #endif |
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| 243 | |
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| 244 | #define ZALLOC(strm, items, size) \ |
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| 245 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) |
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| 246 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
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| 247 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
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| 248 | |
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| 249 | /* Reverse the bytes in a 32-bit value */ |
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| 250 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ |
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| 251 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) |
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| 252 | |
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| 253 | #endif /* ZUTIL_H */ |
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