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 #ifndef ZUTIL_H 12 #define ZUTIL_H 13 14 #ifdef HAVE_HIDDEN 15 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 16 #else 17 # define ZLIB_INTERNAL 18 #endif 19 20 #include "zlib.h" 21 22 #if defined(STDC) && !defined(Z_SOLO) && !defined(_KERNEL) 23 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 24 # include <stddef.h> 25 # endif 26 # include <string.h> 27 # include <stdlib.h> 28 #endif 29 30 #ifdef Z_SOLO 31 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 32 #endif 33 34 #ifndef local 35 # define local static 36 #endif 37 /* since "static" is used to mean two completely different things in C, we 38 define "local" for the non-static meaning of "static", for readability 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 1 102 #endif 103 104 #if defined(VAXC) || defined(VMS) 105 # define OS_CODE 2 106 # define F_OPEN(name, mode) \ 107 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 108 #endif 109 110 #ifdef __370__ 111 # if __TARGET_LIB__ < 0x20000000 112 # define OS_CODE 4 113 # elif __TARGET_LIB__ < 0x40000000 114 # define OS_CODE 11 115 # else 116 # define OS_CODE 8 117 # endif 118 #endif 119 120 #if defined(ATARI) || defined(atarist) 121 # define OS_CODE 5 122 #endif 123 124 #ifdef OS2 125 # define OS_CODE 6 126 # if defined(M_I86) && !defined(Z_SOLO) 127 # include <malloc.h> 128 # endif 129 #endif 130 131 #if defined(MACOS) || defined(TARGET_OS_MAC) 132 # define OS_CODE 7 133 # ifndef Z_SOLO 134 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 135 # include <unix.h> /* for fdopen */ 136 # else 137 # ifndef fdopen 138 # define fdopen(fd,mode) NULL /* No fdopen() */ 139 # endif 140 # endif 141 # endif 142 #endif 143 144 #ifdef __acorn 145 # define OS_CODE 13 146 #endif 147 148 #if defined(WIN32) && !defined(__CYGWIN__) 149 # define OS_CODE 10 150 #endif 151 152 #ifdef _BEOS_ 153 # define OS_CODE 16 154 #endif 155 156 #ifdef __TOS_OS400__ 157 # define OS_CODE 18 158 #endif 159 160 #ifdef __APPLE__ 161 # define OS_CODE 19 162 #endif 163 164 #if defined(_BEOS_) || defined(RISCOS) 165 # define fdopen(fd,mode) NULL /* No fdopen() */ 166 #endif 167 168 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 169 # if defined(_WIN32_WCE) 170 # define fdopen(fd,mode) NULL /* No fdopen() */ 171 # ifndef _PTRDIFF_T_DEFINED 172 typedef int ptrdiff_t; 173 # define _PTRDIFF_T_DEFINED 174 # endif 175 # else 176 # define fdopen(fd,type) _fdopen(fd,type) 177 # endif 178 #endif 179 180 #if defined(__BORLANDC__) && !defined(MSDOS) 181 #pragma warn -8004 182 #pragma warn -8008 183 #pragma warn -8066 184 #endif 185 186 /* provide prototypes for these when building zlib without LFS */ 187 #if !defined(_WIN32) && \ 188 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 189 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 190 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 191 #endif 192 193 /* common defaults */ 194 195 #ifndef OS_CODE 196 # define OS_CODE 3 /* assume Unix */ 197 #endif 198 199 #ifndef F_OPEN 200 # define F_OPEN(name, mode) fopen((name), (mode)) 201 #endif 202 203 /* functions */ 204 205 #if defined(pyr) || defined(Z_SOLO) 206 # define NO_MEMCPY 207 #endif 208 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 209 /* Use our own functions for small and medium model with MSC <= 5.0. 210 * You may have to use the same strategy for Borland C (untested). 211 * The __SC__ check is for Symantec. 212 */ 213 # define NO_MEMCPY 214 #endif 215 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 216 # define HAVE_MEMCPY 217 #endif 218 #ifdef HAVE_MEMCPY 219 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 220 # define zmemcpy _fmemcpy 221 # define zmemcmp _fmemcmp 222 # define zmemzero(dest, len) _fmemset(dest, 0, len) 223 # else 224 # define zmemcpy memcpy 225 # define zmemcmp memcmp 226 # define zmemzero(dest, len) memset(dest, 0, len) 227 # endif 228 #else 229 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 230 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 231 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 232 #endif 233 234 /* Diagnostic functions */ 235 #ifdef ZLIB_DEBUG 236 # include <stdio.h> 237 extern int ZLIB_INTERNAL z_verbose; 238 extern void ZLIB_INTERNAL z_error OF((char *m)); 239 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 240 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 241 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 242 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 243 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 244 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 245 #else 246 # define Assert(cond,msg) 247 # define Trace(x) 248 # define Tracev(x) 249 # define Tracevv(x) 250 # define Tracec(c,x) 251 # define Tracecv(c,x) 252 #endif 253 254 #ifndef Z_SOLO 255 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 256 unsigned size)); 257 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 258 #endif 259 260 #define ZALLOC(strm, items, size) \ 261 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 262 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 263 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 264 265 /* Reverse the bytes in a 32-bit value */ 266 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 267 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 268 269 #endif /* ZUTIL_H */ 270