1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler 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 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 /* since "static" is used to mean two completely different things in C, we 40 define "local" for the non-static meaning of "static", for readability 41 (compile with -Dlocal if your debugger can't find static symbols) */ 42 43 typedef unsigned char uch; 44 typedef uch FAR uchf; 45 typedef unsigned short ush; 46 typedef ush FAR ushf; 47 typedef unsigned long ulg; 48 49 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 50 /* (size given to avoid silly warnings with Visual C++) */ 51 52 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 53 54 #define ERR_RETURN(strm,err) \ 55 return (strm->msg = ERR_MSG(err), (err)) 56 /* To be used only when the state is known to be valid */ 57 58 /* common constants */ 59 60 #ifndef DEF_WBITS 61 # define DEF_WBITS MAX_WBITS 62 #endif 63 /* default windowBits for decompression. MAX_WBITS is for compression only */ 64 65 #if MAX_MEM_LEVEL >= 8 66 # define DEF_MEM_LEVEL 8 67 #else 68 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 69 #endif 70 /* default memLevel */ 71 72 #define STORED_BLOCK 0 73 #define STATIC_TREES 1 74 #define DYN_TREES 2 75 /* The three kinds of block type */ 76 77 #define MIN_MATCH 3 78 #define MAX_MATCH 258 79 /* The minimum and maximum match lengths */ 80 81 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 82 83 /* target dependencies */ 84 85 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 86 # define OS_CODE 0x00 87 # ifndef Z_SOLO 88 # if defined(__TURBOC__) || defined(__BORLANDC__) 89 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 90 /* Allow compilation with ANSI keywords only enabled */ 91 void _Cdecl farfree( void *block ); 92 void *_Cdecl farmalloc( unsigned long nbytes ); 93 # else 94 # include <alloc.h> 95 # endif 96 # else /* MSC or DJGPP */ 97 # include <malloc.h> 98 # endif 99 # endif 100 #endif 101 102 #ifdef AMIGA 103 # define OS_CODE 1 104 #endif 105 106 #if defined(VAXC) || defined(VMS) 107 # define OS_CODE 2 108 # define F_OPEN(name, mode) \ 109 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 110 #endif 111 112 #ifdef __370__ 113 # if __TARGET_LIB__ < 0x20000000 114 # define OS_CODE 4 115 # elif __TARGET_LIB__ < 0x40000000 116 # define OS_CODE 11 117 # else 118 # define OS_CODE 8 119 # endif 120 #endif 121 122 #if defined(ATARI) || defined(atarist) 123 # define OS_CODE 5 124 #endif 125 126 #ifdef OS2 127 # define OS_CODE 6 128 # if defined(M_I86) && !defined(Z_SOLO) 129 # include <malloc.h> 130 # endif 131 #endif 132 133 #if defined(MACOS) || defined(TARGET_OS_MAC) 134 # define OS_CODE 7 135 # ifndef Z_SOLO 136 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 137 # include <unix.h> /* for fdopen */ 138 # else 139 # ifndef fdopen 140 # define fdopen(fd,mode) NULL /* No fdopen() */ 141 # endif 142 # endif 143 # endif 144 #endif 145 146 #ifdef __acorn 147 # define OS_CODE 13 148 #endif 149 150 #if defined(WIN32) && !defined(__CYGWIN__) 151 # define OS_CODE 10 152 #endif 153 154 #ifdef _BEOS_ 155 # define OS_CODE 16 156 #endif 157 158 #ifdef __TOS_OS400__ 159 # define OS_CODE 18 160 #endif 161 162 #ifdef __APPLE__ 163 # define OS_CODE 19 164 #endif 165 166 #if defined(_BEOS_) || defined(RISCOS) 167 # define fdopen(fd,mode) NULL /* No fdopen() */ 168 #endif 169 170 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 171 # if defined(_WIN32_WCE) 172 # define fdopen(fd,mode) NULL /* No fdopen() */ 173 # ifndef _PTRDIFF_T_DEFINED 174 typedef int ptrdiff_t; 175 # define _PTRDIFF_T_DEFINED 176 # endif 177 # else 178 # define fdopen(fd,type) _fdopen(fd,type) 179 # endif 180 #endif 181 182 #if defined(__BORLANDC__) && !defined(MSDOS) 183 #pragma warn -8004 184 #pragma warn -8008 185 #pragma warn -8066 186 #endif 187 188 /* provide prototypes for these when building zlib without LFS */ 189 #if !defined(_WIN32) && \ 190 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 191 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 192 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 193 #endif 194 195 /* common defaults */ 196 197 #ifndef OS_CODE 198 # define OS_CODE 3 /* assume Unix */ 199 #endif 200 201 #ifndef F_OPEN 202 # define F_OPEN(name, mode) fopen((name), (mode)) 203 #endif 204 205 /* functions */ 206 207 #if defined(pyr) || defined(Z_SOLO) 208 # define NO_MEMCPY 209 #endif 210 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 211 /* Use our own functions for small and medium model with MSC <= 5.0. 212 * You may have to use the same strategy for Borland C (untested). 213 * The __SC__ check is for Symantec. 214 */ 215 # define NO_MEMCPY 216 #endif 217 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 218 # define HAVE_MEMCPY 219 #endif 220 #ifdef HAVE_MEMCPY 221 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 222 # define zmemcpy _fmemcpy 223 # define zmemcmp _fmemcmp 224 # define zmemzero(dest, len) _fmemset(dest, 0, len) 225 # else 226 # define zmemcpy memcpy 227 # define zmemcmp memcmp 228 # define zmemzero(dest, len) memset(dest, 0, len) 229 # endif 230 #else 231 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 232 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 233 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 234 #endif 235 236 /* Diagnostic functions */ 237 #ifdef ZLIB_DEBUG 238 # include <stdio.h> 239 extern int ZLIB_INTERNAL z_verbose; 240 extern void ZLIB_INTERNAL z_error OF((char *m)); 241 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 242 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 243 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 244 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 245 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 246 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 247 #else 248 # define Assert(cond,msg) 249 # define Trace(x) 250 # define Tracev(x) 251 # define Tracevv(x) 252 # define Tracec(c,x) 253 # define Tracecv(c,x) 254 #endif 255 256 #ifndef Z_SOLO 257 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 258 unsigned size)); 259 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 260 #endif 261 262 #define ZALLOC(strm, items, size) \ 263 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 264 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 265 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 266 267 /* Reverse the bytes in a 32-bit value */ 268 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 269 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 270 271 #endif /* ZUTIL_H */ 272