| 1 | /* zutil.h -- internal interface and configuration of the compression library
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| 2 | * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler
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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 | #ifndef local
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| 33 | # define local static
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| 34 | #endif
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| 35 | /* since "static" is used to mean two completely different things in C, we
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| 36 | define "local" for the non-static meaning of "static", for readability
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| 37 | (compile with -Dlocal if your debugger can't find static symbols) */
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| 38 |
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| 39 | typedef unsigned char uch;
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| 40 | typedef uch FAR uchf;
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| 41 | typedef unsigned short ush;
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| 42 | typedef ush FAR ushf;
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| 43 | typedef unsigned long ulg;
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| 44 |
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| 45 | #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC)
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| 46 | # include <limits.h>
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| 47 | # if (ULONG_MAX == 0xffffffffffffffff)
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| 48 | # define Z_U8 unsigned long
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| 49 | # elif (ULLONG_MAX == 0xffffffffffffffff)
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| 50 | # define Z_U8 unsigned long long
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| 51 | # elif (UINT_MAX == 0xffffffffffffffff)
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| 52 | # define Z_U8 unsigned
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| 53 | # endif
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| 54 | #endif
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| 55 |
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| 56 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
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| 57 | /* (size given to avoid silly warnings with Visual C++) */
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| 58 |
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| 59 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
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| 60 |
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| 61 | #define ERR_RETURN(strm,err) \
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| 62 | return (strm->msg = ERR_MSG(err), (err))
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| 63 | /* To be used only when the state is known to be valid */
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| 64 |
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| 65 | /* common constants */
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| 66 |
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| 67 | #ifndef DEF_WBITS
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| 68 | # define DEF_WBITS MAX_WBITS
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| 69 | #endif
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| 70 | /* default windowBits for decompression. MAX_WBITS is for compression only */
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| 71 |
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| 72 | #if MAX_MEM_LEVEL >= 8
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| 73 | # define DEF_MEM_LEVEL 8
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| 74 | #else
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| 75 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL
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| 76 | #endif
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| 77 | /* default memLevel */
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| 78 |
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| 79 | #define STORED_BLOCK 0
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| 80 | #define STATIC_TREES 1
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| 81 | #define DYN_TREES 2
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| 82 | /* The three kinds of block type */
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| 83 |
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| 84 | #define MIN_MATCH 3
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| 85 | #define MAX_MATCH 258
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| 86 | /* The minimum and maximum match lengths */
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| 87 |
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| 88 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
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| 89 |
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| 90 | /* target dependencies */
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| 91 |
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| 92 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
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| 93 | # define OS_CODE 0x00
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| 94 | # ifndef Z_SOLO
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| 95 | # if defined(__TURBOC__) || defined(__BORLANDC__)
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| 96 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
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| 97 | /* Allow compilation with ANSI keywords only enabled */
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| 98 | void _Cdecl farfree( void *block );
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| 99 | void *_Cdecl farmalloc( unsigned long nbytes );
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| 100 | # else
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| 101 | # include <alloc.h>
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| 102 | # endif
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| 103 | # else /* MSC or DJGPP */
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| 104 | # include <malloc.h>
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| 105 | # endif
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| 106 | # endif
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| 107 | #endif
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| 108 |
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| 109 | #ifdef AMIGA
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| 110 | # define OS_CODE 1
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| 111 | #endif
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| 112 |
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| 113 | #if defined(VAXC) || defined(VMS)
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| 114 | # define OS_CODE 2
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| 115 | # define F_OPEN(name, mode) \
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| 116 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
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| 117 | #endif
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| 118 |
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| 119 | #ifdef __370__
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| 120 | # if __TARGET_LIB__ < 0x20000000
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| 121 | # define OS_CODE 4
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| 122 | # elif __TARGET_LIB__ < 0x40000000
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| 123 | # define OS_CODE 11
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| 124 | # else
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| 125 | # define OS_CODE 8
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| 126 | # endif
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| 127 | #endif
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| 128 |
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| 129 | #if defined(ATARI) || defined(atarist)
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| 130 | # define OS_CODE 5
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| 131 | #endif
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| 132 |
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| 133 | #ifdef OS2
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| 134 | # define OS_CODE 6
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| 135 | # if defined(M_I86) && !defined(Z_SOLO)
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| 136 | # include <malloc.h>
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| 137 | # endif
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| 138 | #endif
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| 139 |
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| 140 | #if defined(MACOS) || defined(TARGET_OS_MAC)
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| 141 | # define OS_CODE 7
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| 142 | # ifndef Z_SOLO
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| 143 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
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| 144 | # include <unix.h> /* for fdopen */
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| 145 | # else
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| 146 | # ifndef fdopen
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| 147 | # define fdopen(fd,mode) NULL /* No fdopen() */
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| 148 | # endif
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| 149 | # endif
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| 150 | # endif
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| 151 | #endif
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| 152 |
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| 153 | #ifdef __acorn
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| 154 | # define OS_CODE 13
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| 155 | #endif
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| 156 |
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| 157 | #if defined(WIN32) && !defined(__CYGWIN__)
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| 158 | # define OS_CODE 10
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| 159 | #endif
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| 160 |
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| 161 | #ifdef _BEOS_
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| 162 | # define OS_CODE 16
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| 163 | #endif
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| 164 |
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| 165 | #ifdef __TOS_OS400__
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| 166 | # define OS_CODE 18
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| 167 | #endif
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| 168 |
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| 169 | #ifdef __APPLE__
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| 170 | # define OS_CODE 19
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| 171 | #endif
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| 172 |
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| 173 | #if defined(_BEOS_) || defined(RISCOS)
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| 174 | # define fdopen(fd,mode) NULL /* No fdopen() */
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| 175 | #endif
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| 176 |
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| 177 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
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| 178 | # if defined(_WIN32_WCE)
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| 179 | # define fdopen(fd,mode) NULL /* No fdopen() */
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| 180 | # else
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| 181 | # define fdopen(fd,type) _fdopen(fd,type)
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| 182 | # endif
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| 183 | #endif
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| 184 |
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| 185 | #if defined(__BORLANDC__) && !defined(MSDOS)
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| 186 | #pragma warn -8004
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| 187 | #pragma warn -8008
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| 188 | #pragma warn -8066
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| 189 | #endif
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| 190 |
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| 191 | /* provide prototypes for these when building zlib without LFS */
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| 192 | #if !defined(_WIN32) && \
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| 193 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
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| 194 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
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| 195 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
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| 196 | #endif
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| 197 |
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| 198 | /* common defaults */
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| 199 |
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| 200 | #ifndef OS_CODE
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| 201 | # define OS_CODE 3 /* assume Unix */
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| 202 | #endif
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| 203 |
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| 204 | #ifndef F_OPEN
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| 205 | # define F_OPEN(name, mode) fopen((name), (mode))
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| 206 | #endif
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| 207 |
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| 208 | /* functions */
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| 209 |
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| 210 | #if defined(pyr) || defined(Z_SOLO)
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| 211 | # define NO_MEMCPY
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| 212 | #endif
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| 213 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
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| 214 | /* Use our own functions for small and medium model with MSC <= 5.0.
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| 215 | * You may have to use the same strategy for Borland C (untested).
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| 216 | * The __SC__ check is for Symantec.
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| 217 | */
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| 218 | # define NO_MEMCPY
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| 219 | #endif
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| 220 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
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| 221 | # define HAVE_MEMCPY
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| 222 | #endif
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| 223 | #ifdef HAVE_MEMCPY
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| 224 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
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| 225 | # define zmemcpy _fmemcpy
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| 226 | # define zmemcmp _fmemcmp
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| 227 | # define zmemzero(dest, len) _fmemset(dest, 0, len)
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| 228 | # else
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| 229 | # define zmemcpy memcpy
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| 230 | # define zmemcmp memcmp
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| 231 | # define zmemzero(dest, len) memset(dest, 0, len)
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| 232 | # endif
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| 233 | #else
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| 234 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
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| 235 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
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| 236 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
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| 237 | #endif
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| 238 |
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| 239 | /* Diagnostic functions */
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| 240 | #ifdef ZLIB_DEBUG
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| 241 | # include <stdio.h>
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| 242 | extern int ZLIB_INTERNAL z_verbose;
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| 243 | extern void ZLIB_INTERNAL z_error OF((char *m));
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| 244 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
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| 245 | # define Trace(x) {if (z_verbose>=0) fprintf x ;}
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| 246 | # define Tracev(x) {if (z_verbose>0) fprintf x ;}
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| 247 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
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| 248 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
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| 249 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
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| 250 | #else
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| 251 | # define Assert(cond,msg)
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| 252 | # define Trace(x)
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| 253 | # define Tracev(x)
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| 254 | # define Tracevv(x)
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| 255 | # define Tracec(c,x)
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| 256 | # define Tracecv(c,x)
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| 257 | #endif
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| 258 |
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| 259 | #ifdef IPRT_NO_CRT /* VBox */
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| 260 | # undef Assert /* VBox */
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| 261 | # include <iprt/assert.h> /* VBox */
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| 262 | # undef Assert /* VBox */
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| 263 | # ifdef ZLIB_DEBUG /* VBox */
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| 264 | # define Assert(cond, msg) AssertMsg(cond, (msg)) /* VBox */
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| 265 | # else /* VBox */
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| 266 | # define Assert(cond, msg) do {} while (0) /* VBox */
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| 267 | # endif /* VBox */
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| 268 | #endif /* VBox */
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| 269 |
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| 270 | #ifndef Z_SOLO
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| 271 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
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| 272 | unsigned size));
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| 273 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
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| 274 | #endif
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| 275 |
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| 276 | #define ZALLOC(strm, items, size) \
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| 277 | (*((strm)->zalloc))((strm)->opaque, (items), (size))
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| 278 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
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| 279 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
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| 280 |
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| 281 | /* Reverse the bytes in a 32-bit value */
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| 282 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
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| 283 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
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| 284 |
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| 285 | #endif /* ZUTIL_H */
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