1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2013 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: zutil.h,v 1.1.1.2 2002/03/11 21:53:28 tromey Exp $ */ 12 13 #ifndef ZUTIL_H 14 #define ZUTIL_H 15 16 #ifdef HAVE_HIDDEN 17 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 18 #else 19 # define ZLIB_INTERNAL 20 #endif 21 22 #include "zlib.h" 23 24 #if defined(STDC) && !defined(Z_SOLO) 25 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 26 # include <stddef.h> 27 # endif 28 # include <string.h> 29 # include <stdlib.h> 30 #endif 31 32 #ifdef Z_SOLO 33 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 34 #endif 35 36 #ifndef local 37 # define local static 38 #endif 39 /* compile with -Dlocal if your debugger can't find static symbols */ 40 41 typedef unsigned char uch; 42 typedef uch FAR uchf; 43 typedef unsigned short ush; 44 typedef ush FAR ushf; 45 typedef unsigned long ulg; 46 47 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 48 /* (size given to avoid silly warnings with Visual C++) */ 49 50 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 51 52 #define ERR_RETURN(strm,err) \ 53 return (strm->msg = ERR_MSG(err), (err)) 54 /* To be used only when the state is known to be valid */ 55 56 /* common constants */ 57 58 #ifndef DEF_WBITS 59 # define DEF_WBITS MAX_WBITS 60 #endif 61 /* default windowBits for decompression. MAX_WBITS is for compression only */ 62 63 #if MAX_MEM_LEVEL >= 8 64 # define DEF_MEM_LEVEL 8 65 #else 66 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 67 #endif 68 /* default memLevel */ 69 70 #define STORED_BLOCK 0 71 #define STATIC_TREES 1 72 #define DYN_TREES 2 73 /* The three kinds of block type */ 74 75 #define MIN_MATCH 3 76 #define MAX_MATCH 258 77 /* The minimum and maximum match lengths */ 78 79 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 80 81 /* target dependencies */ 82 83 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 84 # define OS_CODE 0x00 85 # ifndef Z_SOLO 86 # if defined(__TURBOC__) || defined(__BORLANDC__) 87 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 88 /* Allow compilation with ANSI keywords only enabled */ 89 void _Cdecl farfree( void *block ); 90 void *_Cdecl farmalloc( unsigned long nbytes ); 91 # else 92 # include <alloc.h> 93 # endif 94 # else /* MSC or DJGPP */ 95 # include <malloc.h> 96 # endif 97 # endif 98 #endif 99 100 #ifdef AMIGA 101 # define OS_CODE 0x01 102 #endif 103 104 #if defined(VAXC) || defined(VMS) 105 # define OS_CODE 0x02 106 # define F_OPEN(name, mode) \ 107 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 108 #endif 109 110 #if defined(ATARI) || defined(atarist) 111 # define OS_CODE 0x05 112 #endif 113 114 #ifdef OS2 115 # define OS_CODE 0x06 116 # if defined(M_I86) && !defined(Z_SOLO) 117 # include <malloc.h> 118 # endif 119 #endif 120 121 #if defined(MACOS) || defined(TARGET_OS_MAC) 122 # define OS_CODE 0x07 123 # ifndef Z_SOLO 124 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 125 # include <unix.h> /* for fdopen */ 126 # else 127 # ifndef fdopen 128 # define fdopen(fd,mode) NULL /* No fdopen() */ 129 # endif 130 # endif 131 # endif 132 #endif 133 134 #ifdef TOPS20 135 # define OS_CODE 0x0a 136 #endif 137 138 #ifdef WIN32 139 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 140 # define OS_CODE 0x0b 141 # endif 142 #endif 143 144 #ifdef __50SERIES /* Prime/PRIMOS */ 145 # define OS_CODE 0x0f 146 #endif 147 148 #if defined(_BEOS_) || defined(RISCOS) 149 # define fdopen(fd,mode) NULL /* No fdopen() */ 150 #endif 151 152 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 153 # if defined(_WIN32_WCE) 154 # define fdopen(fd,mode) NULL /* No fdopen() */ 155 # ifndef _PTRDIFF_T_DEFINED 156 typedef int ptrdiff_t; 157 # define _PTRDIFF_T_DEFINED 158 # endif 159 # else 160 # define fdopen(fd,type) _fdopen(fd,type) 161 # endif 162 #endif 163 164 #if defined(__BORLANDC__) && !defined(MSDOS) 165 #pragma warn -8004 166 #pragma warn -8008 167 #pragma warn -8066 168 #endif 169 170 /* provide prototypes for these when building zlib without LFS */ 171 #if !defined(_WIN32) && \ 172 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 173 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 174 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 175 #endif 176 177 /* common defaults */ 178 179 #ifndef OS_CODE 180 # define OS_CODE 0x03 /* assume Unix */ 181 #endif 182 183 #ifndef F_OPEN 184 # define F_OPEN(name, mode) fopen((name), (mode)) 185 #endif 186 187 /* functions */ 188 189 #if defined(pyr) || defined(Z_SOLO) 190 # define NO_MEMCPY 191 #endif 192 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 193 /* Use our own functions for small and medium model with MSC <= 5.0. 194 * You may have to use the same strategy for Borland C (untested). 195 * The __SC__ check is for Symantec. 196 */ 197 # define NO_MEMCPY 198 #endif 199 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 200 # define HAVE_MEMCPY 201 #endif 202 #ifdef HAVE_MEMCPY 203 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 204 # define zmemcpy _fmemcpy 205 # define zmemcmp _fmemcmp 206 # define zmemzero(dest, len) _fmemset(dest, 0, len) 207 # else 208 # define zmemcpy memcpy 209 # define zmemcmp memcmp 210 # define zmemzero(dest, len) memset(dest, 0, len) 211 # endif 212 #else 213 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 214 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 215 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 216 #endif 217 218 /* Diagnostic functions */ 219 #ifdef DEBUG 220 # include <stdio.h> 221 extern int ZLIB_INTERNAL z_verbose; 222 extern void ZLIB_INTERNAL z_error OF((char *m)); 223 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 224 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 225 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 226 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 227 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 228 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 229 #else 230 # define Assert(cond,msg) 231 # define Trace(x) 232 # define Tracev(x) 233 # define Tracevv(x) 234 # define Tracec(c,x) 235 # define Tracecv(c,x) 236 #endif 237 238 #ifndef Z_SOLO 239 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 240 unsigned size)); 241 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 242 #endif 243 244 #define ZALLOC(strm, items, size) \ 245 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 246 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 247 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 248 249 /* Reverse the bytes in a 32-bit value */ 250 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 251 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 252 253 #endif /* ZUTIL_H */ 254
