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/* $FreeBSD: head/lib/libz/zutil.h 21673 1997-01-14 07:20:47Z jkh $ */
12
13#ifndef _Z_UTIL_H
14#define _Z_UTIL_H
15
16#include "zlib.h"
17
18#if defined(MSDOS)||defined(VMS)||defined(CRAY)||defined(WIN32)||defined(RISCOS)
19# include <stddef.h>
20# include <errno.h>
21#else
22 extern int errno;
23#endif
24#ifdef STDC
25# include <string.h>
26# include <stdlib.h>
27#endif
28
29#ifndef local
30# define local static
31#endif
32/* compile with -Dlocal if your debugger can't find static symbols */
33
34typedef unsigned char uch;
35typedef uch FAR uchf;

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71
72#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
73
74 /* target dependencies */
75
76#ifdef MSDOS
77# define OS_CODE 0x00
78# ifdef __TURBOC__
79# include <alloc.h>
80# else /* MSC or DJGPP */
81# include <malloc.h>
82# endif
83#endif
84
85#ifdef OS2
86# define OS_CODE 0x06
87#endif
88
89#ifdef WIN32 /* Window 95 & Windows NT */
90# define OS_CODE 0x0b
91#endif
92
93#if defined(VAXC) || defined(VMS)
94# define OS_CODE 0x02
95# define FOPEN(name, mode) \
96 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
97#endif
98
99#ifdef AMIGA
100# define OS_CODE 0x01
101#endif
102
103#if defined(ATARI) || defined(atarist)
104# define OS_CODE 0x05
105#endif
106
107#ifdef MACOS
108# define OS_CODE 0x07
109#endif
110
111#ifdef __50SERIES /* Prime/PRIMOS */
112# define OS_CODE 0x0F
113#endif
114
115#ifdef TOPS20
116# define OS_CODE 0x0a
117#endif
118
119#if defined(_BEOS_) || defined(RISCOS)
120# define fdopen(fd,mode) NULL /* No fdopen() */
121#endif
122
123 /* Common defaults */
124
125#ifndef OS_CODE
126# define OS_CODE 0x03 /* assume Unix */
127#endif
128
129#ifndef FOPEN
130# define FOPEN(name, mode) fopen((name), (mode))
131#endif
132
133 /* functions */
134
135#ifdef HAVE_STRERROR
136 extern char *strerror OF((int));
137# define zstrerror(errnum) strerror(errnum)
138#else
139# define zstrerror(errnum) ""
140#endif
141
142#if defined(pyr)
143# define NO_MEMCPY
144#endif
145#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(_MSC_VER)
146 /* Use our own functions for small and medium model with MSC <= 5.0.
147 * You may have to use the same strategy for Borland C (untested).
148 */
149# define NO_MEMCPY
150#endif
151#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
152# define HAVE_MEMCPY
153#endif
154#ifdef HAVE_MEMCPY
155# ifdef SMALL_MEDIUM /* MSDOS small or medium model */

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165 extern void zmemcpy OF((Bytef* dest, Bytef* source, uInt len));
166 extern int zmemcmp OF((Bytef* s1, Bytef* s2, uInt len));
167 extern void zmemzero OF((Bytef* dest, uInt len));
168#endif
169
170/* Diagnostic functions */
171#ifdef DEBUG
172# include <stdio.h>
173# ifndef verbose
174# define verbose 0
175# endif
176 extern void z_error OF((char *m));
177# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
178# define Trace(x) fprintf x
179# define Tracev(x) {if (verbose) fprintf x ;}
180# define Tracevv(x) {if (verbose>1) fprintf x ;}
181# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
182# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
183#else
184# define Assert(cond,msg)
185# define Trace(x)
186# define Tracev(x)
187# define Tracevv(x)
188# define Tracec(c,x)
189# define Tracecv(c,x)
190#endif
191
192
193typedef uLong (*check_func) OF((uLong check, const Bytef *buf, uInt len));
194
195voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
196void zcfree OF((voidpf opaque, voidpf ptr));
197
198#define ZALLOC(strm, items, size) \
199 (*((strm)->zalloc))((strm)->opaque, (items), (size))
200#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
201#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
202
203#endif /* _Z_UTIL_H */