1/* 2 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6/* zutil.h -- internal interface and configuration of the compression library 7 * Copyright (C) 1995-2005 Jean-loup Gailly. 8 * For conditions of distribution and use, see copyright notice in zlib.h 9 */ 10 11/* WARNING: this file should *not* be used by applications. It is 12 part of the implementation of the compression library and is 13 subject to change. Applications should only use zlib.h. 14 */ 15 16#ifndef _ZUTIL_H 17#define _ZUTIL_H 18 19#pragma ident "%Z%%M% %I% %E% SMI" 20 21#define ZLIB_INTERNAL 22#include "zlib.h" 23 24#ifdef STDC 25# ifndef _WIN32_WCE 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 <sys/errno.h> 44# endif 45#endif 46 47#ifndef local 48# define local static 49#endif 50/* compile with -Dlocal if your debugger can't find static symbols */ 51 52typedef unsigned char uch; 53typedef uch FAR uchf; 54typedef unsigned short ush; 55typedef ush FAR ushf; 56typedef unsigned long ulg; 57 58extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 59/* (size given to avoid silly warnings with Visual C++) */ 60 61#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 62 63#define ERR_RETURN(strm,err) \ 64 return (strm->msg = (char*)ERR_MSG(err), (err)) 65/* To be used only when the state is known to be valid */ 66 67 /* common constants */ 68 69#ifndef DEF_WBITS 70# define DEF_WBITS MAX_WBITS 71#endif 72/* default windowBits for decompression. MAX_WBITS is for compression only */ 73 74#if MAX_MEM_LEVEL >= 8 75# define DEF_MEM_LEVEL 8 76#else 77# define DEF_MEM_LEVEL MAX_MEM_LEVEL 78#endif 79/* default memLevel */ 80 81#define STORED_BLOCK 0 82#define STATIC_TREES 1 83#define DYN_TREES 2 84/* The three kinds of block type */ 85 86#define MIN_MATCH 3 87#define MAX_MATCH 258 88/* The minimum and maximum match lengths */ 89 90#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 91 92 /* target dependencies */ 93 94#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 95# define OS_CODE 0x00 96# if defined(__TURBOC__) || defined(__BORLANDC__) 97# if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 98 /* Allow compilation with ANSI keywords only enabled */ 99 void _Cdecl farfree( void *block ); 100 void *_Cdecl farmalloc( unsigned long nbytes ); 101# else 102# include <alloc.h> 103# endif 104# else /* MSC or DJGPP */ 105# include <malloc.h> 106# endif 107#endif 108 109#ifdef AMIGA 110# define OS_CODE 0x01 111#endif 112 113#if defined(VAXC) || defined(VMS) 114# define OS_CODE 0x02 115# define F_OPEN(name, mode) \ 116 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 117#endif 118 119#if defined(ATARI) || defined(atarist) 120# define OS_CODE 0x05 121#endif 122 123#ifdef OS2 124# define OS_CODE 0x06 125# ifdef M_I86 126 #include <malloc.h> 127# endif 128#endif 129 130#if defined(MACOS) || defined(TARGET_OS_MAC) 131# define OS_CODE 0x07 132# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 133# include <unix.h> /* for fdopen */ 134# else 135# ifndef fdopen 136# define fdopen(fd,mode) NULL /* No fdopen() */ 137# endif 138# endif 139#endif 140 141#ifdef TOPS20 142# define OS_CODE 0x0a 143#endif 144 145#ifdef WIN32 146# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 147# define OS_CODE 0x0b 148# endif 149#endif 150 151#ifdef __50SERIES /* Prime/PRIMOS */ 152# define OS_CODE 0x0f 153#endif 154 155#if defined(_BEOS_) || defined(RISCOS) 156# define fdopen(fd,mode) NULL /* No fdopen() */ 157#endif 158 159#if (defined(_MSC_VER) && (_MSC_VER > 600)) 160# if defined(_WIN32_WCE) 161# define fdopen(fd,mode) NULL /* No fdopen() */ 162# ifndef _PTRDIFF_T_DEFINED 163 typedef int ptrdiff_t; 164# define _PTRDIFF_T_DEFINED 165# endif 166# else 167# define fdopen(fd,type) _fdopen(fd,type) 168# endif 169#endif 170 171 /* common defaults */ 172 173#ifndef OS_CODE 174# define OS_CODE 0x03 /* assume Unix */ 175#endif 176 177#ifndef F_OPEN 178# define F_OPEN(name, mode) fopen((name), (mode)) 179#endif 180 181 /* functions */ 182 183#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 184# ifndef HAVE_VSNPRINTF 185# define HAVE_VSNPRINTF 186# endif 187#endif 188#if defined(__CYGWIN__) 189# ifndef HAVE_VSNPRINTF 190# define HAVE_VSNPRINTF 191# endif 192#endif 193#ifndef HAVE_VSNPRINTF 194# ifdef MSDOS 195 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 196 but for now we just assume it doesn't. */ 197# define NO_vsnprintf 198# endif 199# ifdef __TURBOC__ 200# define NO_vsnprintf 201# endif 202# ifdef WIN32 203 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 204# if !defined(vsnprintf) && !defined(NO_vsnprintf) 205# define vsnprintf _vsnprintf 206# endif 207# endif 208# ifdef __SASC 209# define NO_vsnprintf 210# endif 211#endif 212#ifdef VMS 213# define NO_vsnprintf 214#endif 215 216#if defined(pyr) 217# define NO_MEMCPY 218#endif 219#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 220 /* Use our own functions for small and medium model with MSC <= 5.0. 221 * You may have to use the same strategy for Borland C (untested). 222 * The __SC__ check is for Symantec. 223 */ 224# define NO_MEMCPY 225#endif 226#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 227# define HAVE_MEMCPY 228#endif 229#ifdef HAVE_MEMCPY 230# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 231# define zmemcpy _fmemcpy 232# define zmemcmp _fmemcmp 233# define zmemzero(dest, len) _fmemset(dest, 0, len) 234# else 235# define zmemcpy memcpy 236# define zmemcmp memcmp 237# define zmemzero(dest, len) memset(dest, 0, len) 238# endif 239#else 240 extern void zmemcpy OF((void* dest, const void* source, uInt len)); 241 extern int zmemcmp OF((const void* s1, const void* s2, uInt len)); 242 extern void zmemzero OF((void* dest, uInt len)); 243#endif 244 245/* Diagnostic functions */ 246#ifdef DEBUG 247# include <stdio.h> 248 extern int z_verbose; 249 extern void z_error OF((char *m)); 250# define Assert(cond,msg) {if(!(cond)) z_error(msg);} 251# define Trace(x) {if (z_verbose>=0) fprintf x ;} 252# define Tracev(x) {if (z_verbose>0) fprintf x ;} 253# define Tracevv(x) {if (z_verbose>1) fprintf x ;} 254# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 255# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 256#else 257# define Assert(cond,msg) 258# define Trace(x) 259# define Tracev(x) 260# define Tracevv(x) 261# define Tracec(c,x) 262# define Tracecv(c,x) 263#endif 264 265 266voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 267void zcfree OF((voidpf opaque, voidpf ptr)); 268 269#define ZALLOC(strm, items, size) \ 270 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 271#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 272#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 273 274#endif /* _ZUTIL_H */ 275