1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2002 Jean-loup Gailly. 3 * For conditions of distribution and use, see copyright notice in zlib.h 4 */ 5 6 /* WARNING: this file should *not* be used by applications. It is 7 part of the implementation of the compression library and is 8 subject to change. Applications should only use zlib.h. 9 */ 10 11 /* @(#) $Id$ */ 12 13 #ifndef _Z_UTIL_H 14 #define _Z_UTIL_H 15 16 #include "zlib.h" 17 18 #ifdef STDC 19 # include <stddef.h> 20 # include <string.h> 21 # include <stdlib.h> 22 #endif 23 #ifdef NO_ERRNO_H 24 extern int errno; 25 #else 26 # include <errno.h> 27 #endif 28 29 #ifndef local 30 # define local static 31 #endif 32 /* compile with -Dlocal if your debugger can't find static symbols */ 33 34 typedef unsigned char uch; 35 typedef uch FAR uchf; 36 typedef unsigned short ush; 37 typedef ush FAR ushf; 38 typedef unsigned long ulg; 39 40 41 #define ERR_RETURN(strm,err) \ 42 return (strm->msg = (char*)ERR_MSG(err), (err)) 43 /* To be used only when the state is known to be valid */ 44 45 /* common constants */ 46 47 #ifndef DEF_WBITS 48 # define DEF_WBITS MAX_WBITS 49 #endif 50 /* default windowBits for decompression. MAX_WBITS is for compression only */ 51 52 #if MAX_MEM_LEVEL >= 8 53 # define DEF_MEM_LEVEL 8 54 #else 55 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 56 #endif 57 /* default memLevel */ 58 59 #define STORED_BLOCK 0 60 #define STATIC_TREES 1 61 #define DYN_TREES 2 62 /* The three kinds of block type */ 63 64 #define MIN_MATCH 3 65 #define MAX_MATCH 258 66 /* The minimum and maximum match lengths */ 67 68 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 69 70 /* target dependencies */ 71 72 #ifdef MSDOS 73 # define OS_CODE 0x00 74 # if defined(__TURBOC__) || defined(__BORLANDC__) 75 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 76 /* Allow compilation with ANSI keywords only enabled */ 77 void _Cdecl farfree( void *block ); 78 void *_Cdecl farmalloc( unsigned long nbytes ); 79 # else 80 # include <alloc.h> 81 # endif 82 # else /* MSC or DJGPP */ 83 # endif 84 #endif 85 86 #ifdef OS2 87 # define OS_CODE 0x06 88 #endif 89 90 #ifdef WIN32 /* Window 95 & Windows NT */ 91 # define OS_CODE 0x0b 92 #endif 93 94 #if defined(VAXC) || defined(VMS) 95 # define OS_CODE 0x02 96 # define F_OPEN(name, mode) \ 97 ft_fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 98 #endif 99 100 #ifdef AMIGA 101 # define OS_CODE 0x01 102 #endif 103 104 #if defined(ATARI) || defined(atarist) 105 # define OS_CODE 0x05 106 #endif 107 108 #if defined(MACOS) || defined(TARGET_OS_MAC) 109 # define OS_CODE 0x07 110 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 111 # include <unix.h> /* for fdopen */ 112 # else 113 # ifndef fdopen 114 # define fdopen(fd,mode) NULL /* No fdopen() */ 115 # endif 116 # endif 117 #endif 118 119 #ifdef __50SERIES /* Prime/PRIMOS */ 120 # define OS_CODE 0x0F 121 #endif 122 123 #ifdef TOPS20 124 # define OS_CODE 0x0a 125 #endif 126 127 #if defined(_BEOS_) || defined(RISCOS) 128 # define fdopen(fd,mode) NULL /* No fdopen() */ 129 #endif 130 131 #if (defined(_MSC_VER) && (_MSC_VER > 600)) 132 # define fdopen(fd,type) _fdopen(fd,type) 133 #endif 134 135 136 /* Common defaults */ 137 138 #ifndef OS_CODE 139 # define OS_CODE 0x03 /* assume Unix */ 140 #endif 141 142 #ifndef F_OPEN 143 # define F_OPEN(name, mode) ft_fopen((name), (mode)) 144 #endif 145 146 /* functions */ 147 148 #ifdef HAVE_STRERROR 149 extern char *strerror OF((int)); 150 # define zstrerror(errnum) strerror(errnum) 151 #else 152 # define zstrerror(errnum) "" 153 #endif 154 155 #if defined(pyr) 156 # define NO_MEMCPY 157 #endif 158 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 159 /* Use our own functions for small and medium model with MSC <= 5.0. 160 * You may have to use the same strategy for Borland C (untested). 161 * The __SC__ check is for Symantec. 162 */ 163 # define NO_MEMCPY 164 #endif 165 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 166 # define HAVE_MEMCPY 167 #endif 168 #ifdef HAVE_MEMCPY 169 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 170 # define zmemcpy _fmemcpy 171 # define zmemcmp _fmemcmp 172 # define zmemzero(dest, len) _fmemset(dest, 0, len) 173 # else 174 # define zmemcpy ft_memcpy 175 # define zmemcmp ft_memcmp 176 # define zmemzero(dest, len) ft_memset(dest, 0, len) 177 # endif 178 #else 179 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 180 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 181 extern void zmemzero OF((Bytef* dest, uInt len)); 182 #endif 183 184 /* Diagnostic functions */ 185 #ifdef DEBUG 186 # include <stdio.h> 187 extern int z_verbose; 188 extern void z_error OF((char *m)); 189 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 190 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 191 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 192 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 193 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 194 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 195 #else 196 # define Assert(cond,msg) 197 # define Trace(x) 198 # define Tracev(x) 199 # define Tracevv(x) 200 # define Tracec(c,x) 201 # define Tracecv(c,x) 202 #endif 203 204 205 typedef uLong (*check_func) OF((uLong check, const Bytef *buf, 206 uInt len)); 207 local voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 208 local void zcfree OF((voidpf opaque, voidpf ptr)); 209 210 #define ZALLOC(strm, items, size) \ 211 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 212 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 213 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 214 215 #endif /* _Z_UTIL_H */ 216
