1 /* 2 * Copyright (c) 2008 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* zutil.h -- internal interface and configuration of the compression library 29 * Copyright (C) 1995-2005 Jean-loup Gailly. 30 * For conditions of distribution and use, see copyright notice in zlib.h 31 */ 32 33 /* WARNING: this file should *not* be used by applications. It is 34 part of the implementation of the compression library and is 35 subject to change. Applications should only use zlib.h. 36 */ 37 38 /* @(#) $Id$ */ 39 40 #ifndef ZUTIL_H 41 #define ZUTIL_H 42 43 #define ZLIB_INTERNAL 44 45 #if KERNEL 46 # include <libkern/zlib.h> 47 # include <string.h> 48 # ifndef NO_ERRNO_H 49 # define NO_ERRNO_H 1 50 # endif 51 # ifndef NO_ZCFUNCS 52 # define NO_ZCFUNCS 1 53 # endif 54 #else 55 # include "zlib.h" 56 # ifdef STDC 57 # ifndef _WIN32_WCE 58 # include <stddef.h> 59 # endif 60 # include <string.h> 61 # include <stdlib.h> 62 # endif 63 #endif /* KERNEL */ 64 65 #ifdef NO_ERRNO_H 66 # ifdef _WIN32_WCE 67 /* The Microsoft C Run-Time Library for Windows CE doesn't have 68 * errno. We define it as a global variable to simplify porting. 69 * Its value is always 0 and should not be used. We rename it to 70 * avoid conflict with other libraries that use the same workaround. 71 */ 72 # define errno z_errno 73 # endif 74 extern int errno; 75 #else 76 # ifndef _WIN32_WCE 77 # include <errno.h> 78 # endif 79 #endif 80 81 #ifndef local 82 # define local static 83 #endif 84 /* compile with -Dlocal if your debugger can't find static symbols */ 85 86 typedef unsigned char uch; 87 typedef uch FAR uchf; 88 typedef unsigned short ush; 89 typedef ush FAR ushf; 90 typedef unsigned long ulg; 91 92 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 93 /* (size given to avoid silly warnings with Visual C++) */ 94 95 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 96 97 #define ERR_RETURN(strm,err) \ 98 return (strm->msg = (char*)ERR_MSG(err), (err)) 99 /* To be used only when the state is known to be valid */ 100 101 /* common constants */ 102 103 #ifndef DEF_WBITS 104 # define DEF_WBITS MAX_WBITS 105 #endif 106 /* default windowBits for decompression. MAX_WBITS is for compression only */ 107 108 #if MAX_MEM_LEVEL >= 8 109 # define DEF_MEM_LEVEL 8 110 #else 111 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 112 #endif 113 /* default memLevel */ 114 115 #define STORED_BLOCK 0 116 #define STATIC_TREES 1 117 #define DYN_TREES 2 118 /* The three kinds of block type */ 119 120 #define MIN_MATCH 3 121 #define MAX_MATCH 258 122 /* The minimum and maximum match lengths */ 123 124 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 125 126 /* target dependencies */ 127 128 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 129 # define OS_CODE 0x00 130 # if defined(__TURBOC__) || defined(__BORLANDC__) 131 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 132 /* Allow compilation with ANSI keywords only enabled */ 133 void _Cdecl farfree( void *block ); 134 void *_Cdecl farmalloc( unsigned long nbytes ); 135 # else 136 # include <alloc.h> 137 # endif 138 # else /* MSC or DJGPP */ 139 # include <malloc.h> 140 # endif 141 #endif 142 143 #ifdef AMIGA 144 # define OS_CODE 0x01 145 #endif 146 147 #if defined(VAXC) || defined(VMS) 148 # define OS_CODE 0x02 149 # define F_OPEN(name, mode) \ 150 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 151 #endif 152 153 #if defined(ATARI) || defined(atarist) 154 # define OS_CODE 0x05 155 #endif 156 157 #ifdef OS2 158 # define OS_CODE 0x06 159 # ifdef M_I86 160 #include <malloc.h> 161 # endif 162 #endif 163 164 #if defined(MACOS) || defined(TARGET_OS_MAC) 165 # define OS_CODE 0x07 166 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 167 # include <unix.h> /* for fdopen */ 168 # else 169 # ifndef fdopen 170 # define fdopen(fd,mode) NULL /* No fdopen() */ 171 # endif 172 # endif 173 #endif 174 175 #ifdef TOPS20 176 # define OS_CODE 0x0a 177 #endif 178 179 #ifdef WIN32 180 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 181 # define OS_CODE 0x0b 182 # endif 183 #endif 184 185 #ifdef __50SERIES /* Prime/PRIMOS */ 186 # define OS_CODE 0x0f 187 #endif 188 189 #if defined(_BEOS_) || defined(RISCOS) 190 # define fdopen(fd,mode) NULL /* No fdopen() */ 191 #endif 192 193 #if KERNEL 194 typedef long ptrdiff_t; 195 #elif (defined(_MSC_VER) && (_MSC_VER > 600)) 196 # if defined(_WIN32_WCE) 197 # define fdopen(fd,mode) NULL /* No fdopen() */ 198 # ifndef _PTRDIFF_T_DEFINED 199 typedef int ptrdiff_t; 200 # define _PTRDIFF_T_DEFINED 201 # endif 202 # else 203 # define fdopen(fd,type) _fdopen(fd,type) 204 # endif 205 #endif 206 207 208 /* common defaults */ 209 210 #ifndef OS_CODE 211 # define OS_CODE 0x03 /* assume Unix */ 212 #endif 213 214 #ifndef F_OPEN 215 # define F_OPEN(name, mode) fopen((name), (mode)) 216 #endif 217 218 /* functions */ 219 220 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 221 # ifndef HAVE_VSNPRINTF 222 # define HAVE_VSNPRINTF 223 # endif 224 #endif 225 #if defined(__CYGWIN__) 226 # ifndef HAVE_VSNPRINTF 227 # define HAVE_VSNPRINTF 228 # endif 229 #endif 230 #ifndef HAVE_VSNPRINTF 231 # ifdef MSDOS 232 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 233 but for now we just assume it doesn't. */ 234 # define NO_vsnprintf 235 # endif 236 # ifdef __TURBOC__ 237 # define NO_vsnprintf 238 # endif 239 # ifdef WIN32 240 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 241 # if !defined(vsnprintf) && !defined(NO_vsnprintf) 242 # define vsnprintf _vsnprintf 243 # endif 244 # endif 245 # ifdef __SASC 246 # define NO_vsnprintf 247 # endif 248 #endif 249 #ifdef VMS 250 # define NO_vsnprintf 251 #endif 252 253 #if defined(pyr) 254 # define NO_MEMCPY 255 #endif 256 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 257 /* Use our own functions for small and medium model with MSC <= 5.0. 258 * You may have to use the same strategy for Borland C (untested). 259 * The __SC__ check is for Symantec. 260 */ 261 # define NO_MEMCPY 262 #endif 263 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 264 # define HAVE_MEMCPY 265 #endif 266 #ifdef HAVE_MEMCPY 267 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 268 # define zmemcpy _fmemcpy 269 # define zmemcmp _fmemcmp 270 # define zmemzero(dest, len) _fmemset(dest, 0, len) 271 # else 272 # define zmemcpy memcpy 273 # define zmemcmp memcmp 274 # define zmemzero(dest, len) memset(dest, 0, len) 275 # endif 276 #else 277 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 278 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 279 extern void zmemzero OF((Bytef* dest, uInt len)); 280 #endif 281 282 /* Diagnostic functions */ 283 #if defined(DEBUG) && !defined(KERNEL) 284 # include <stdio.h> 285 extern int z_verbose; 286 extern void z_error OF((char *m)); 287 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 288 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 289 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 290 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 291 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 292 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 293 #else 294 # define Assert(cond,msg) 295 # define Trace(x) 296 # define Tracev(x) 297 # define Tracevv(x) 298 # define Tracec(c,x) 299 # define Tracecv(c,x) 300 #endif 301 #undef DEBUG 302 303 #ifndef NO_ZCFUNCS 304 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 305 void zcfree OF((voidpf opaque, voidpf ptr)); 306 #endif /* NO_ZCFUNCS */ 307 308 #define ZALLOC(strm, items, size) \ 309 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 310 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 311 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 312 313 #endif /* ZUTIL_H */ 314