1/* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-1996 Jean-loup Gailly. 3 * For conditions of distribution and use, see copyright notice in zlib.h 4 */ 5 6/* WARNING: this file should *not* be used by applications. It is 7 part of the implementation of the compression library and is 8 subject to change. Applications should only use zlib.h. 9 */ 10 11/* From: zutil.h,v 1.16 1996/07/24 13:41:13 me Exp $ */ 12/* $FreeBSD$ */ 13 14#ifndef _Z_UTIL_H 15#define _Z_UTIL_H 16 17#define ZEXPORT 18 19#ifdef _KERNEL 20#include <sys/zlib.h> 21#else 22#include "zlib.h" 23#endif 24 25#ifdef _KERNEL 26/* Assume this is a *BSD or SVR4 kernel */ 27#include <sys/types.h> 28#include <sys/time.h> 29#include <sys/systm.h> 30#include <sys/module.h> 31#include <sys/errno.h> 32#include <sys/param.h> 33#include <sys/kernel.h> 34# define HAVE_MEMCPY 35# define memcpy(d, s, n) bcopy((s), (d), (n)) 36# define memset(d, v, n) bzero((d), (n)) 37# define memcmp bcmp 38 39#else 40#if defined(__KERNEL__) 41/* Assume this is a Linux kernel */ 42#include <linux/string.h> 43#define HAVE_MEMCPY 44 45#else /* not kernel */ 46 47#if defined(MSDOS)||defined(VMS)||defined(CRAY)||defined(WIN32)||defined(RISCOS) 48# include <stddef.h> 49# include <errno.h> 50#else 51 extern int errno; 52#endif 53#ifdef STDC 54# include <string.h> 55# include <stdlib.h> 56#endif 57#endif /* __KERNEL__ */ 58#endif /* _KERNEL */ 59 60#ifndef local 61# define local static 62#endif 63/* compile with -Dlocal if your debugger can't find static symbols */ 64 65typedef unsigned char uch; 66typedef uch FAR uchf; 67typedef unsigned short ush; 68typedef ush FAR ushf; 69typedef unsigned long ulg; 70 71#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 72 73#define ERR_RETURN(strm,err) \ 74 return (strm->msg = (const char*)ERR_MSG(err), (err)) 75/* To be used only when the state is known to be valid */ 76 77 /* common constants */ 78 79#ifndef DEF_WBITS 80# define DEF_WBITS MAX_WBITS 81#endif 82/* default windowBits for decompression. MAX_WBITS is for compression only */ 83 84#if MAX_MEM_LEVEL >= 8 85# define DEF_MEM_LEVEL 8 86#else 87# define DEF_MEM_LEVEL MAX_MEM_LEVEL 88#endif 89/* default memLevel */ 90 91#define STORED_BLOCK 0 92#define STATIC_TREES 1 93#define DYN_TREES 2 94/* The three kinds of block type */ 95 96#define MIN_MATCH 3 97#define MAX_MATCH 258 98/* The minimum and maximum match lengths */ 99 100#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 101 102 /* target dependencies */ 103 104#ifdef MSDOS 105# define OS_CODE 0x00 106# ifdef __TURBOC__ 107# include <alloc.h> 108# else /* MSC or DJGPP */ 109# include <malloc.h> 110# endif 111#endif 112 113#ifdef OS2 114# define OS_CODE 0x06 115#endif 116 117#ifdef WIN32 /* Window 95 & Windows NT */ 118# define OS_CODE 0x0b 119#endif 120 121#if defined(VAXC) || defined(VMS) 122# define OS_CODE 0x02 123# define FOPEN(name, mode) \ 124 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 125#endif 126 127#ifdef AMIGA 128# define OS_CODE 0x01 129#endif 130 131#if defined(ATARI) || defined(atarist) 132# define OS_CODE 0x05 133#endif 134 135#ifdef MACOS 136# define OS_CODE 0x07 137#endif 138 139#ifdef __50SERIES /* Prime/PRIMOS */ 140# define OS_CODE 0x0F 141#endif 142 143#ifdef TOPS20 144# define OS_CODE 0x0a 145#endif 146 147#if defined(_BEOS_) || defined(RISCOS) 148# define fdopen(fd,mode) NULL /* No fdopen() */ 149#endif 150 151 /* Common defaults */ 152 153#ifndef OS_CODE 154# define OS_CODE 0x03 /* assume Unix */ 155#endif 156 157#ifndef FOPEN 158# define FOPEN(name, mode) fopen((name), (mode)) 159#endif 160 161 /* functions */ 162 163#ifdef HAVE_STRERROR 164 extern char *strerror OF((int)); 165# define zstrerror(errnum) strerror(errnum) 166#else 167# define zstrerror(errnum) "" 168#endif 169 170#if defined(pyr) 171# define NO_MEMCPY 172#endif 173#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(_MSC_VER) 174 /* Use our own functions for small and medium model with MSC <= 5.0. 175 * You may have to use the same strategy for Borland C (untested). 176 */ 177# define NO_MEMCPY 178#endif 179#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 180# define HAVE_MEMCPY 181#endif 182#ifdef HAVE_MEMCPY 183# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 184# define zmemcpy _fmemcpy 185# define zmemcmp _fmemcmp 186# define zmemzero(dest, len) _fmemset(dest, 0, len) 187# else 188# define zmemcpy memcpy 189# define zmemcmp memcmp 190# define zmemzero(dest, len) memset(dest, 0, len) 191# endif 192#else 193 extern void zmemcpy OF((Bytef* dest, Bytef* source, uInt len)); 194 extern int zmemcmp OF((Bytef* s1, Bytef* s2, uInt len)); 195 extern void zmemzero OF((Bytef* dest, uInt len)); 196#endif 197 198/* Diagnostic functions */ 199#ifdef DEBUG_ZLIB 200# include <stdio.h> 201# ifndef verbose 202# define verbose 0 203# endif 204 extern void z_error OF((char *m)); 205# define Assert(cond,msg) {if(!(cond)) z_error(msg);} 206# define Trace(x) fprintf x 207# define Tracev(x) {if (verbose) fprintf x ;} 208# define Tracevv(x) {if (verbose>1) fprintf x ;} 209# define Tracec(c,x) {if (verbose && (c)) fprintf x ;} 210# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;} 211#else 212# define Assert(cond,msg) 213# define Trace(x) 214# define Tracev(x) 215# define Tracevv(x) 216# define Tracec(c,x) 217# define Tracecv(c,x) 218#endif 219 220 221typedef uLong (*check_func) OF((uLong check, const Bytef *buf, uInt len)); 222 223voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 224void zcfree OF((voidpf opaque, voidpf ptr)); 225 226#define ZALLOC(strm, items, size) \ 227 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 228#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 229#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 230 231#endif /* _Z_UTIL_H */ 232