ref: 29aa9577677e6d2e211b00cb92ca04ce17cb862b
dir: /src/gzip/zutil.h/
/* 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" #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; #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 */ # 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 /* 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 */ #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 (*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 */