You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
220 lines
5.4 KiB
220 lines
5.4 KiB
/* zutil.h -- internal interface and configuration of the compression library |
|
* Copyright (C) 1995-1998 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" |
|
|
|
#ifdef STDC |
|
# include <stddef.h> |
|
# include <string.h> |
|
# include <stdlib.h> |
|
#endif |
|
#ifdef NO_ERRNO_H |
|
extern int errno; |
|
#else |
|
# include <errno.h> |
|
#endif |
|
|
|
#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; |
|
|
|
extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */ |
|
/* (size given to avoid silly warnings with Visual C++) */ |
|
|
|
#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
|
|
|
#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 */ |
|
|
|
#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 */ |
|
# include <malloc.h> |
|
# 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) \ |
|
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 |
|
|
|
|
|
/* Common defaults */ |
|
|
|
#ifndef OS_CODE |
|
# define OS_CODE 0x03 /* assume Unix */ |
|
#endif |
|
|
|
#ifndef F_OPEN |
|
# define F_OPEN(name, mode) 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 memcpy |
|
# define zmemcmp memcmp |
|
# define zmemzero(dest, len) 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 */ |
|
#ifdef DEBUG |
|
# 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 (ZEXPORT *check_func) OF((uLong check, const Bytef *buf, |
|
uInt len)); |
|
voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); |
|
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 */
|
|
|