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