| 1 | /* zutil.h -- internal interface and configuration of the compression library
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| 2 | * Copyright (C) 1995-2003 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: zutil.h,v 1.1 2005/05/12 21:04:53 duns Exp $ */
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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 | #define ZLIB_INTERNAL
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| 17 | #include "zlib.h"
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| 18 |
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| 19 | #ifdef STDC
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| 20 | # include <stddef.h>
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| 21 | # include <string.h>
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| 22 | # include <stdlib.h>
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| 23 | #endif
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| 24 | #ifdef NO_ERRNO_H
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| 25 | extern int errno;
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| 26 | #else
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| 27 | # include <errno.h>
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| 28 | #endif
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| 29 |
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| 30 | #ifndef local
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| 31 | # define local static
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| 32 | #endif
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| 33 | /* compile with -Dlocal if your debugger can't find static symbols */
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| 34 |
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| 35 | typedef unsigned char uch;
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| 36 | typedef uch FAR uchf;
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| 37 | typedef unsigned short ush;
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| 38 | typedef ush FAR ushf;
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| 39 | typedef unsigned long ulg;
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| 40 |
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| 41 | extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
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| 42 | /* (size given to avoid silly warnings with Visual C++) */
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| 43 |
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| 44 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
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| 45 |
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| 46 | #define ERR_RETURN(strm,err) \
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| 47 | return (strm->msg = (char*)ERR_MSG(err), (err))
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| 48 | /* To be used only when the state is known to be valid */
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| 49 |
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| 50 | /* common constants */
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| 51 |
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| 52 | #ifndef DEF_WBITS
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| 53 | # define DEF_WBITS MAX_WBITS
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| 54 | #endif
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| 55 | /* default windowBits for decompression. MAX_WBITS is for compression only */
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| 56 |
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| 57 | #if MAX_MEM_LEVEL >= 8
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| 58 | # define DEF_MEM_LEVEL 8
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| 59 | #else
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| 60 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL
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| 61 | #endif
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| 62 | /* default memLevel */
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| 63 |
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| 64 | #define STORED_BLOCK 0
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| 65 | #define STATIC_TREES 1
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| 66 | #define DYN_TREES 2
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| 67 | /* The three kinds of block type */
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| 68 |
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| 69 | #define MIN_MATCH 3
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| 70 | #define MAX_MATCH 258
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| 71 | /* The minimum and maximum match lengths */
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| 72 |
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| 73 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
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| 74 |
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| 75 | /* target dependencies */
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| 76 |
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| 77 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
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| 78 | # define OS_CODE 0x00
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| 79 | # if defined(__TURBOC__) || defined(__BORLANDC__)
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| 80 | # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
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| 81 | /* Allow compilation with ANSI keywords only enabled */
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| 82 | void _Cdecl farfree( void *block );
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| 83 | void *_Cdecl farmalloc( unsigned long nbytes );
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| 84 | # else
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| 85 | # include <alloc.h>
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| 86 | # endif
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| 87 | # else /* MSC or DJGPP */
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| 88 | # include <malloc.h>
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| 89 | # endif
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| 90 | #endif
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| 91 |
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| 92 | #ifdef AMIGA
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| 93 | # define OS_CODE 0x01
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| 94 | #endif
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| 95 |
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| 96 | #if defined(VAXC) || defined(VMS)
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| 97 | # define OS_CODE 0x02
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| 98 | # define F_OPEN(name, mode) \
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| 99 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
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| 100 | #endif
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| 101 |
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| 102 | #if defined(ATARI) || defined(atarist)
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| 103 | # define OS_CODE 0x05
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| 104 | #endif
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| 105 |
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| 106 | #ifdef OS2
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| 107 | # define OS_CODE 0x06
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| 108 | #endif
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| 109 |
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| 110 | #if defined(MACOS) || defined(TARGET_OS_MAC)
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| 111 | # define OS_CODE 0x07
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| 112 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
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| 113 | # include <unix.h> /* for fdopen */
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| 114 | # else
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| 115 | # ifndef fdopen
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| 116 | # define fdopen(fd,mode) NULL /* No fdopen() */
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| 117 | # endif
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| 118 | # endif
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| 119 | #endif
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| 120 |
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| 121 | #ifdef TOPS20
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| 122 | # define OS_CODE 0x0a
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| 123 | #endif
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| 124 |
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| 125 | #ifdef WIN32
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| 126 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
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| 127 | # define OS_CODE 0x0b
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| 128 | # endif
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| 129 | #endif
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| 130 |
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| 131 | #ifdef __50SERIES /* Prime/PRIMOS */
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| 132 | # define OS_CODE 0x0f
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| 133 | #endif
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| 134 |
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| 135 | #if defined(_BEOS_) || defined(RISCOS)
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| 136 | # define fdopen(fd,mode) NULL /* No fdopen() */
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| 137 | #endif
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| 138 |
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| 139 | #if (defined(_MSC_VER) && (_MSC_VER > 600))
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| 140 | # if defined(_WIN32_WCE)
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| 141 | # define fdopen(fd,mode) NULL /* No fdopen() */
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| 142 | # ifndef _PTRDIFF_T_DEFINED
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| 143 | typedef int ptrdiff_t;
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| 144 | # define _PTRDIFF_T_DEFINED
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| 145 | # endif
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| 146 | # else
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| 147 | # define fdopen(fd,type) _fdopen(fd,type)
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| 148 | # endif
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| 149 | #endif
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| 150 |
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| 151 | /* common defaults */
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| 152 |
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| 153 | #ifndef OS_CODE
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| 154 | # define OS_CODE 0x03 /* assume Unix */
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| 155 | #endif
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| 156 |
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| 157 | #ifndef F_OPEN
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| 158 | # define F_OPEN(name, mode) fopen((name), (mode))
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| 159 | #endif
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| 160 |
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| 161 | /* functions */
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| 162 |
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| 163 | #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
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| 164 | # ifndef HAVE_VSNPRINTF
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| 165 | # define HAVE_VSNPRINTF
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| 166 | # endif
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| 167 | #endif
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| 168 | #if defined(__CYGWIN__)
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| 169 | # ifndef HAVE_VSNPRINTF
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| 170 | # define HAVE_VSNPRINTF
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| 171 | # endif
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| 172 | #endif
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| 173 | #ifndef HAVE_VSNPRINTF
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| 174 | # ifdef MSDOS
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| 175 | /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
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| 176 | but for now we just assume it doesn't. */
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| 177 | # define NO_vsnprintf
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| 178 | # endif
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| 179 | # ifdef __TURBOC__
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| 180 | # define NO_vsnprintf
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| 181 | # endif
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| 182 | # ifdef WIN32
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| 183 | /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
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| 184 | # if !defined(vsnprintf) && !defined(NO_vsnprintf)
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| 185 | # define vsnprintf _vsnprintf
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| 186 | # endif
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| 187 | # endif
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| 188 | # ifdef __SASC
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| 189 | # define NO_vsnprintf
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| 190 | # endif
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| 191 | #endif
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| 192 | #ifdef VMS
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| 193 | # define NO_vsnprintf
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| 194 | #endif
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| 195 |
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| 196 | #ifdef HAVE_STRERROR
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| 197 | # ifndef VMS
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| 198 | extern char *strerror OF((int));
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| 199 | # endif
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| 200 | # define zstrerror(errnum) strerror(errnum)
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| 201 | #else
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| 202 | # define zstrerror(errnum) ""
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| 203 | #endif
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| 204 |
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| 205 | #if defined(pyr)
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| 206 | # define NO_MEMCPY
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| 207 | #endif
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| 208 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
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| 209 | /* Use our own functions for small and medium model with MSC <= 5.0.
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| 210 | * You may have to use the same strategy for Borland C (untested).
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| 211 | * The __SC__ check is for Symantec.
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| 212 | */
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| 213 | # define NO_MEMCPY
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| 214 | #endif
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| 215 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
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| 216 | # define HAVE_MEMCPY
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| 217 | #endif
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| 218 | #ifdef HAVE_MEMCPY
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| 219 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
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| 220 | # define zmemcpy _fmemcpy
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| 221 | # define zmemcmp _fmemcmp
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| 222 | # define zmemzero(dest, len) _fmemset(dest, 0, len)
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| 223 | # else
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| 224 | # define zmemcpy memcpy
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| 225 | # define zmemcmp memcmp
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| 226 | # define zmemzero(dest, len) memset(dest, 0, len)
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| 227 | # endif
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| 228 | #else
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| 229 | extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
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| 230 | extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
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| 231 | extern void zmemzero OF((Bytef* dest, uInt len));
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| 232 | #endif
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| 233 |
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| 234 | /* Diagnostic functions */
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| 235 | #ifdef DEBUG
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| 236 | # include <stdio.h>
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| 237 | extern int z_verbose;
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| 238 | extern void z_error OF((char *m));
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| 239 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
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| 240 | # define Trace(x) {if (z_verbose>=0) fprintf x ;}
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| 241 | # define Tracev(x) {if (z_verbose>0) fprintf x ;}
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| 242 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
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| 243 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
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| 244 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
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| 245 | #else
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| 246 | # define Assert(cond,msg)
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| 247 | # define Trace(x)
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| 248 | # define Tracev(x)
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| 249 | # define Tracevv(x)
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| 250 | # define Tracec(c,x)
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| 251 | # define Tracecv(c,x)
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| 252 | #endif
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| 253 |
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| 254 |
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| 255 | voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
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| 256 | void zcfree OF((voidpf opaque, voidpf ptr));
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| 257 |
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| 258 | #define ZALLOC(strm, items, size) \
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| 259 | (*((strm)->zalloc))((strm)->opaque, (items), (size))
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| 260 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
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| 261 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
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| 262 |
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| 263 | #endif /* _ZUTIL_H */
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