1/* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-1998 Jean-loup Gailly. 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: zutil.h,v 1.1.1.1 2008/10/15 03:25:54 james26_jang Exp $ */ 12 13#ifndef _Z_UTIL_H 14#define _Z_UTIL_H 15 16#include "zlib.h" 17 18#ifdef STDC 19# include <stddef.h> 20# include <string.h> 21# include <stdlib.h> 22#endif 23#ifdef NO_ERRNO_H 24 extern int errno; 25#else 26# include <errno.h> 27#endif 28 29#ifndef local 30# define local static 31#endif 32/* compile with -Dlocal if your debugger can't find static symbols */ 33 34typedef unsigned char uch; 35typedef uch FAR uchf; 36typedef unsigned short ush; 37typedef ush FAR ushf; 38typedef unsigned long ulg; 39 40extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */ 41/* (size given to avoid silly warnings with Visual C++) */ 42 43#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 44 45#define ERR_RETURN(strm,err) \ 46 return (strm->msg = (char*)ERR_MSG(err), (err)) 47/* To be used only when the state is known to be valid */ 48 49 /* common constants */ 50 51#ifndef DEF_WBITS 52# define DEF_WBITS MAX_WBITS 53#endif 54/* default windowBits for decompression. MAX_WBITS is for compression only */ 55 56#if MAX_MEM_LEVEL >= 8 57# define DEF_MEM_LEVEL 8 58#else 59# define DEF_MEM_LEVEL MAX_MEM_LEVEL 60#endif 61/* default memLevel */ 62 63#define STORED_BLOCK 0 64#define STATIC_TREES 1 65#define DYN_TREES 2 66/* The three kinds of block type */ 67 68#define MIN_MATCH 3 69#define MAX_MATCH 258 70/* The minimum and maximum match lengths */ 71 72#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 73 74 /* target dependencies */ 75 76#ifdef MSDOS 77# define OS_CODE 0x00 78# if defined(__TURBOC__) || defined(__BORLANDC__) 79# if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 80 /* Allow compilation with ANSI keywords only enabled */ 81 void _Cdecl farfree( void *block ); 82 void *_Cdecl farmalloc( unsigned long nbytes ); 83# else 84# include <alloc.h> 85# endif 86# else /* MSC or DJGPP */ 87# include <malloc.h> 88# endif 89#endif 90 91#ifdef OS2 92# define OS_CODE 0x06 93#endif 94 95#ifdef WIN32 /* Window 95 & Windows NT */ 96# define OS_CODE 0x0b 97#endif 98 99#if defined(VAXC) || defined(VMS) 100# define OS_CODE 0x02 101# define F_OPEN(name, mode) \ 102 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 103#endif 104 105#ifdef AMIGA 106# define OS_CODE 0x01 107#endif 108 109#if defined(ATARI) || defined(atarist) 110# define OS_CODE 0x05 111#endif 112 113#if defined(MACOS) || defined(TARGET_OS_MAC) 114# define OS_CODE 0x07 115# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 116# include <unix.h> /* for fdopen */ 117# else 118# ifndef fdopen 119# define fdopen(fd,mode) NULL /* No fdopen() */ 120# endif 121# endif 122#endif 123 124#ifdef __50SERIES /* Prime/PRIMOS */ 125# define OS_CODE 0x0F 126#endif 127 128#ifdef TOPS20 129# define OS_CODE 0x0a 130#endif 131 132#if defined(_BEOS_) || defined(RISCOS) 133# define fdopen(fd,mode) NULL /* No fdopen() */ 134#endif 135 136#if (defined(_MSC_VER) && (_MSC_VER > 600)) 137# define fdopen(fd,type) _fdopen(fd,type) 138#endif 139 140 141 /* Common defaults */ 142 143#ifndef OS_CODE 144# define OS_CODE 0x03 /* assume Unix */ 145#endif 146 147#ifndef F_OPEN 148# define F_OPEN(name, mode) fopen((name), (mode)) 149#endif 150 151 /* functions */ 152 153#ifdef HAVE_STRERROR 154 extern char *strerror OF((int)); 155# define zstrerror(errnum) strerror(errnum) 156#else 157# define zstrerror(errnum) "" 158#endif 159 160#if defined(pyr) 161# define NO_MEMCPY 162#endif 163#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 164 /* Use our own functions for small and medium model with MSC <= 5.0. 165 * You may have to use the same strategy for Borland C (untested). 166 * The __SC__ check is for Symantec. 167 */ 168# define NO_MEMCPY 169#endif 170#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 171# define HAVE_MEMCPY 172#endif 173#ifdef HAVE_MEMCPY 174# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 175# define zmemcpy _fmemcpy 176# define zmemcmp _fmemcmp 177# define zmemzero(dest, len) _fmemset(dest, 0, len) 178# else 179# define zmemcpy memcpy 180# define zmemcmp memcmp 181# define zmemzero(dest, len) memset(dest, 0, len) 182# endif 183#else 184 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 185 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 186 extern void zmemzero OF((Bytef* dest, uInt len)); 187#endif 188 189/* Diagnostic functions */ 190#ifdef DEBUG 191# include <stdio.h> 192 extern int z_verbose; 193 extern void z_error OF((char *m)); 194# define Assert(cond,msg) {if(!(cond)) z_error(msg);} 195# define Trace(x) {if (z_verbose>=0) fprintf x ;} 196# define Tracev(x) {if (z_verbose>0) fprintf x ;} 197# define Tracevv(x) {if (z_verbose>1) fprintf x ;} 198# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 199# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 200#else 201# define Assert(cond,msg) 202# define Trace(x) 203# define Tracev(x) 204# define Tracevv(x) 205# define Tracec(c,x) 206# define Tracecv(c,x) 207#endif 208 209 210typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf, 211 uInt len)); 212voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 213void zcfree OF((voidpf opaque, voidpf ptr)); 214 215#define ZALLOC(strm, items, size) \ 216 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 217#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 218#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 219 220#endif /* _Z_UTIL_H */ 221