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 #ifdef NO_ERRNO_H 32 # ifdef _WIN32_WCE 33 /* The Microsoft C Run-Time Library for Windows CE doesn't have 34 * errno. We define it as a global variable to simplify porting. 35 * Its value is always 0 and should not be used. We rename it to 36 * avoid conflict with other libraries that use the same workaround. 37 */ 38 # define errno z_errno 39 # endif 40 extern int errno; 41 #else 42 # ifndef _WIN32_WCE 43 # include <errno.h> 44 # endif 45 #endif 46 47 #ifdef Z_SOLO 48 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 49 #endif 50 51 #ifndef local 52 # define local static 53 #endif 54 /* since "static" is used to mean two completely different things in C, we 55 define "local" for the non-static meaning of "static", for readability 56 (compile with -Dlocal if your debugger can't find static symbols) */ 57 58 typedef unsigned char uch; 59 typedef uch FAR uchf; 60 typedef unsigned short ush; 61 typedef ush FAR ushf; 62 typedef unsigned long ulg; 63 64 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 65 /* (size given to avoid silly warnings with Visual C++) */ 66 67 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 68 69 #define ERR_RETURN(strm,err) \ 70 return (strm->msg = ERR_MSG(err), (err)) 71 /* To be used only when the state is known to be valid */ 72 73 /* common constants */ 74 75 #ifndef DEF_WBITS 76 # define DEF_WBITS MAX_WBITS 77 #endif 78 /* default windowBits for decompression. MAX_WBITS is for compression only */ 79 80 #if MAX_MEM_LEVEL >= 8 81 # define DEF_MEM_LEVEL 8 82 #else 83 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 84 #endif 85 /* default memLevel */ 86 87 #define STORED_BLOCK 0 88 #define STATIC_TREES 1 89 #define DYN_TREES 2 90 /* The three kinds of block type */ 91 92 #define MIN_MATCH 3 93 #define MAX_MATCH 258 94 /* The minimum and maximum match lengths */ 95 96 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 97 98 /* target dependencies */ 99 100 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 101 # define OS_CODE 0x00 102 # ifndef Z_SOLO 103 # if defined(__TURBOC__) || defined(__BORLANDC__) 104 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 105 /* Allow compilation with ANSI keywords only enabled */ 106 void _Cdecl farfree( void *block ); 107 void *_Cdecl farmalloc( unsigned long nbytes ); 108 # else 109 # include <alloc.h> 110 # endif 111 # else /* MSC or DJGPP */ 112 # include <malloc.h> 113 # endif 114 # endif 115 #endif 116 117 #ifdef AMIGA 118 # define OS_CODE 1 119 #endif 120 121 #if defined(VAXC) || defined(VMS) 122 # define OS_CODE 2 123 # define F_OPEN(name, mode) \ 124 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 125 #endif 126 127 #ifdef __370__ 128 # if __TARGET_LIB__ < 0x20000000 129 # define OS_CODE 4 130 # elif __TARGET_LIB__ < 0x40000000 131 # define OS_CODE 11 132 # else 133 # define OS_CODE 8 134 # endif 135 #endif 136 137 #if defined(ATARI) || defined(atarist) 138 # define OS_CODE 5 139 #endif 140 141 #ifdef OS2 142 # define OS_CODE 6 143 # if defined(M_I86) && !defined(Z_SOLO) 144 # include <malloc.h> 145 # endif 146 #endif 147 148 #if defined(MACOS) || defined(TARGET_OS_MAC) 149 # define OS_CODE 7 150 # ifndef Z_SOLO 151 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 152 # include <unix.h> /* for fdopen */ 153 # else 154 # ifndef fdopen 155 # define fdopen(fd,mode) NULL /* No fdopen() */ 156 # endif 157 # endif 158 # endif 159 #endif 160 161 #ifdef __acorn 162 # define OS_CODE 13 163 #endif 164 165 #if defined(WIN32) && !defined(__CYGWIN__) 166 # define OS_CODE 10 167 #endif 168 169 #ifdef _BEOS_ 170 # define OS_CODE 16 171 #endif 172 173 #ifdef __TOS_OS400__ 174 # define OS_CODE 18 175 #endif 176 177 #ifdef __APPLE__ 178 # define OS_CODE 19 179 #endif 180 181 #if defined(_BEOS_) || defined(RISCOS) 182 # define fdopen(fd,mode) NULL /* No fdopen() */ 183 #endif 184 185 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 186 # if defined(_WIN32_WCE) 187 # define fdopen(fd,mode) NULL /* No fdopen() */ 188 # ifndef _PTRDIFF_T_DEFINED 189 typedef int ptrdiff_t; 190 # define _PTRDIFF_T_DEFINED 191 # endif 192 # else 193 # define fdopen(fd,type) _fdopen(fd,type) 194 # endif 195 #endif 196 197 #if defined(__BORLANDC__) && !defined(MSDOS) 198 #pragma warn -8004 199 #pragma warn -8008 200 #pragma warn -8066 201 #endif 202 203 /* provide prototypes for these when building zlib without LFS */ 204 #if !defined(_WIN32) && \ 205 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 206 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 207 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 208 #endif 209 210 /* common defaults */ 211 212 #ifndef OS_CODE 213 # define OS_CODE 3 /* assume Unix */ 214 #endif 215 216 #ifndef F_OPEN 217 # define F_OPEN(name, mode) fopen((name), (mode)) 218 #endif 219 220 /* functions */ 221 222 #if defined(pyr) || defined(Z_SOLO) 223 # define NO_MEMCPY 224 #endif 225 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 226 /* Use our own functions for small and medium model with MSC <= 5.0. 227 * You may have to use the same strategy for Borland C (untested). 228 * The __SC__ check is for Symantec. 229 */ 230 # define NO_MEMCPY 231 #endif 232 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 233 # define HAVE_MEMCPY 234 #endif 235 #ifdef HAVE_MEMCPY 236 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 237 # define zmemcpy _fmemcpy 238 # define zmemcmp _fmemcmp 239 # define zmemzero(dest, len) _fmemset(dest, 0, len) 240 # else 241 # define zmemcpy memcpy 242 # define zmemcmp memcmp 243 # define zmemzero(dest, len) memset(dest, 0, len) 244 # endif 245 #else 246 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 247 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 248 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 249 #endif 250 251 /* Diagnostic functions */ 252 #ifdef ZLIB_DEBUG 253 # include <stdio.h> 254 extern int ZLIB_INTERNAL z_verbose; 255 extern void ZLIB_INTERNAL z_error OF((char *m)); 256 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 257 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 258 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 259 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 260 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 261 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 262 #else 263 # define Assert(cond,msg) 264 # define Trace(x) 265 # define Tracev(x) 266 # define Tracevv(x) 267 # define Tracec(c,x) 268 # define Tracecv(c,x) 269 #endif 270 271 #ifndef Z_SOLO 272 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 273 unsigned size)); 274 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 275 #endif 276 277 #define ZALLOC(strm, items, size) \ 278 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 279 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 280 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 281 282 /* Reverse the bytes in a 32-bit value */ 283 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 284 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 285 286 #ifdef _MSC_VER 287 #define zalign(x) __declspec(align(x)) 288 #else 289 #define zalign(x) __attribute__((aligned((x)))) 290 #endif 291 292 #endif /* ZUTIL_H */ 293