204 lines
4.8 KiB
C
204 lines
4.8 KiB
C
|
/* zutil.h -- internal interface and configuration of the compression library
|
||
|
|
* Copyright (C) 1995-1996 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: zutil.h,v 1.16 1996/07/24 13:41:13 me Exp $ */
|
||
|
|
|
||
|
|
#ifndef _Z_UTIL_H
|
||
|
|
#define _Z_UTIL_H
|
||
|
|
|
||
|
|
#include "zlib.h"
|
||
|
|
|
||
|
|
#if defined(MSDOS)||defined(VMS)||defined(CRAY)||defined(WIN32)||defined(RISCOS)
|
||
|
|
# include <stddef.h>
|
||
|
|
# include <errno.h>
|
||
|
|
#else
|
||
|
|
extern int errno;
|
||
|
|
#endif
|
||
|
|
#ifdef STDC
|
||
|
|
# include <string.h>
|
||
|
|
# include <stdlib.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
|
||
|
|
# ifdef __TURBOC__
|
||
|
|
# include <alloc.h>
|
||
|
|
# 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 FOPEN(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
|
||
|
|
|
||
|
|
#ifdef MACOS
|
||
|
|
# define OS_CODE 0x07
|
||
|
|
#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
|
||
|
|
|
||
|
|
/* Common defaults */
|
||
|
|
|
||
|
|
#ifndef OS_CODE
|
||
|
|
# define OS_CODE 0x03 /* assume Unix */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef FOPEN
|
||
|
|
# define FOPEN(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(M_I86SM) || defined(M_I86MM)) && !defined(_MSC_VER)
|
||
|
|
/* 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).
|
||
|
|
*/
|
||
|
|
# 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, Bytef* source, uInt len));
|
||
|
|
extern int zmemcmp OF((Bytef* s1, Bytef* s2, uInt len));
|
||
|
|
extern void zmemzero OF((Bytef* dest, uInt len));
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Diagnostic functions */
|
||
|
|
#ifdef DEBUG
|
||
|
|
# include <stdio.h>
|
||
|
|
# ifndef verbose
|
||
|
|
# define verbose 0
|
||
|
|
# endif
|
||
|
|
extern void z_error OF((char *m));
|
||
|
|
# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
|
||
|
|
# define Trace(x) fprintf x
|
||
|
|
# define Tracev(x) {if (verbose) fprintf x ;}
|
||
|
|
# define Tracevv(x) {if (verbose>1) fprintf x ;}
|
||
|
|
# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
|
||
|
|
# define Tracecv(c,x) {if (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));
|
||
|
|
|
||
|
|
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 */
|