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 86typedef unsigned char uch; 87typedef uch FAR uchf; 88typedef unsigned short ush; 89typedef ush FAR ushf; 90typedef unsigned long ulg; 91 92extern 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 304voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 305void 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