/* zutil.h -- internal interface and configuration of the compression library | |
* Copyright (C) 1995-2002 Jean-loup Gailly. | |
* For conditions of distribution and use, see copyright notice in zlib.h | |
*/ | |
/* WARNING: this file should *not* be used by applications. It is | |
part of the implementation of the compression library and is | |
subject to change. Applications should only use zlib.h. | |
*/ | |
/* @(#) $Id$ */ | |
#ifndef _Z_UTIL_H | |
#define _Z_UTIL_H | |
#include "zlib.h" | |
#if !defined(STARBOARD) | |
#ifdef STDC | |
# include <stddef.h> | |
# include <string.h> | |
# include <stdlib.h> | |
#endif | |
#ifdef NO_ERRNO_H | |
extern int errno; | |
#else | |
# include <errno.h> | |
#endif | |
#endif // !defined(STARBOARD) | |
#ifndef local | |
# define local static | |
#endif | |
/* compile with -Dlocal if your debugger can't find static symbols */ | |
typedef unsigned char uch; | |
typedef uch FAR uchf; | |
typedef unsigned short ush; | |
typedef ush FAR ushf; | |
typedef unsigned long ulg; | |
#define ERR_RETURN(strm,err) \ | |
return (strm->msg = (char*)ERR_MSG(err), (err)) | |
/* To be used only when the state is known to be valid */ | |
/* common constants */ | |
#ifndef DEF_WBITS | |
# define DEF_WBITS MAX_WBITS | |
#endif | |
/* default windowBits for decompression. MAX_WBITS is for compression only */ | |
#if MAX_MEM_LEVEL >= 8 | |
# define DEF_MEM_LEVEL 8 | |
#else | |
# define DEF_MEM_LEVEL MAX_MEM_LEVEL | |
#endif | |
/* default memLevel */ | |
#define STORED_BLOCK 0 | |
#define STATIC_TREES 1 | |
#define DYN_TREES 2 | |
/* The three kinds of block type */ | |
#define MIN_MATCH 3 | |
#define MAX_MATCH 258 | |
/* The minimum and maximum match lengths */ | |
#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ | |
/* target dependencies */ | |
#if !defined(STARBOARD) | |
#ifdef MSDOS | |
# define OS_CODE 0x00 | |
# if defined(__TURBOC__) || defined(__BORLANDC__) | |
# if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) | |
/* Allow compilation with ANSI keywords only enabled */ | |
void _Cdecl farfree( void *block ); | |
void *_Cdecl farmalloc( unsigned long nbytes ); | |
# else | |
# include <alloc.h> | |
# endif | |
# else /* MSC or DJGPP */ | |
# endif | |
#endif | |
#ifdef OS2 | |
# define OS_CODE 0x06 | |
#endif | |
#ifdef WIN32 /* Window 95 & Windows NT */ | |
# define OS_CODE 0x0b | |
#endif | |
#if defined(VAXC) || defined(VMS) | |
# define OS_CODE 0x02 | |
# define F_OPEN(name, mode) \ | |
ft_fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") | |
#endif | |
#ifdef AMIGA | |
# define OS_CODE 0x01 | |
#endif | |
#if defined(ATARI) || defined(atarist) | |
# define OS_CODE 0x05 | |
#endif | |
#if defined(MACOS) || defined(TARGET_OS_MAC) | |
# define OS_CODE 0x07 | |
# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os | |
# include <unix.h> /* for fdopen */ | |
# else | |
# ifndef fdopen | |
# define fdopen(fd,mode) NULL /* No fdopen() */ | |
# endif | |
# endif | |
#endif | |
#ifdef __50SERIES /* Prime/PRIMOS */ | |
# define OS_CODE 0x0F | |
#endif | |
#ifdef TOPS20 | |
# define OS_CODE 0x0a | |
#endif | |
#if defined(_BEOS_) || defined(RISCOS) | |
# define fdopen(fd,mode) NULL /* No fdopen() */ | |
#endif | |
#if (defined(_MSC_VER) && (_MSC_VER > 600)) | |
# define fdopen(fd,type) _fdopen(fd,type) | |
#endif | |
#endif // !defined(STARBOARD) | |
/* Common defaults */ | |
#ifndef OS_CODE | |
# define OS_CODE 0x03 /* assume Unix */ | |
#endif | |
#ifndef F_OPEN | |
# define F_OPEN(name, mode) ft_fopen((name), (mode)) | |
#endif | |
/* functions */ | |
#ifdef HAVE_STRERROR | |
extern char *strerror OF((int)); | |
# define zstrerror(errnum) strerror(errnum) | |
#else | |
# define zstrerror(errnum) "" | |
#endif | |
#if defined(pyr) | |
# define NO_MEMCPY | |
#endif | |
#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) | |
/* Use our own functions for small and medium model with MSC <= 5.0. | |
* You may have to use the same strategy for Borland C (untested). | |
* The __SC__ check is for Symantec. | |
*/ | |
# define NO_MEMCPY | |
#endif | |
#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) | |
# define HAVE_MEMCPY | |
#endif | |
#ifdef HAVE_MEMCPY | |
# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ | |
# define zmemcpy _fmemcpy | |
# define zmemcmp _fmemcmp | |
# define zmemzero(dest, len) _fmemset(dest, 0, len) | |
# else | |
# define zmemcpy ft_memcpy | |
# define zmemcmp ft_memcmp | |
# define zmemzero(dest, len) ft_memset(dest, 0, len) | |
# endif | |
#else | |
extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); | |
extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); | |
extern void zmemzero OF((Bytef* dest, uInt len)); | |
#endif | |
/* Diagnostic functions */ | |
#if defined(DEBUG) && !defined(STARBOARD) | |
# include <stdio.h> | |
extern int z_verbose; | |
extern void z_error OF((char *m)); | |
# define Assert(cond,msg) {if(!(cond)) z_error(msg);} | |
# define Trace(x) {if (z_verbose>=0) fprintf x ;} | |
# define Tracev(x) {if (z_verbose>0) fprintf x ;} | |
# define Tracevv(x) {if (z_verbose>1) fprintf x ;} | |
# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} | |
# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} | |
#else | |
# define Assert(cond,msg) | |
# define Trace(x) | |
# define Tracev(x) | |
# define Tracevv(x) | |
# define Tracec(c,x) | |
# define Tracecv(c,x) | |
#endif | |
typedef uLong (*check_func) OF((uLong check, const Bytef *buf, | |
uInt len)); | |
local voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); | |
local void zcfree OF((voidpf opaque, voidpf ptr)); | |
#define ZALLOC(strm, items, size) \ | |
(*((strm)->zalloc))((strm)->opaque, (items), (size)) | |
#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) | |
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} | |
#endif /* _Z_UTIL_H */ |