Subversion Repositories shark

Rev

Rev 119 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
107 pj 1
/* zutil.h -- internal interface and configuration of the compression library
2
 * Copyright (C) 1995-2002 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
 
119 giacomo 11
/* @(#) $Id: zutil.h,v 1.2 2003-03-31 11:39:28 giacomo Exp $ */
107 pj 12
 
13
#ifndef _Z_UTIL_H
14
#define _Z_UTIL_H
15
 
16
#include "zlib.h"
17
 
18
#ifdef STDC
19
#  include <stddef.h>
20
#  include <string.h>
21
#  include <stdlib.h>
22
#endif
23
#ifdef NO_ERRNO_H
24
    extern int errno;
25
#else
26
#   include <errno.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
 
34
typedef unsigned char  uch;
35
typedef uch FAR uchf;
36
typedef unsigned short ush;
37
typedef ush FAR ushf;
38
typedef unsigned long  ulg;
39
 
40
extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
41
/* (size given to avoid silly warnings with Visual C++) */
42
 
43
#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
44
 
45
#define ERR_RETURN(strm,err) \
46
  return (strm->msg = (char*)ERR_MSG(err), (err))
47
/* To be used only when the state is known to be valid */
48
 
49
        /* common constants */
50
 
51
#ifndef DEF_WBITS
52
#  define DEF_WBITS MAX_WBITS
53
#endif
54
/* default windowBits for decompression. MAX_WBITS is for compression only */
55
 
56
#if MAX_MEM_LEVEL >= 8
57
#  define DEF_MEM_LEVEL 8
58
#else
59
#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
60
#endif
61
/* default memLevel */
62
 
63
#define STORED_BLOCK 0
64
#define STATIC_TREES 1
65
#define DYN_TREES    2
66
/* The three kinds of block type */
67
 
68
#define MIN_MATCH  3
69
#define MAX_MATCH  258
70
/* The minimum and maximum match lengths */
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
#  if defined(__TURBOC__) || defined(__BORLANDC__)
79
#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
80
       /* Allow compilation with ANSI keywords only enabled */
81
       void _Cdecl farfree( void *block );
82
       void *_Cdecl farmalloc( unsigned long nbytes );
83
#    else
84
#     include <alloc.h>
85
#    endif
86
#  else /* MSC or DJGPP */
119 giacomo 87
 
107 pj 88
#  endif
89
#endif
90
 
91
#ifdef OS2
92
#  define OS_CODE  0x06
93
#endif
94
 
95
#ifdef WIN32 /* Window 95 & Windows NT */
96
#  define OS_CODE  0x0b
97
#endif
98
 
99
#if defined(VAXC) || defined(VMS)
100
#  define OS_CODE  0x02
101
#  define F_OPEN(name, mode) \
102
     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
103
#endif
104
 
105
#ifdef AMIGA
106
#  define OS_CODE  0x01
107
#endif
108
 
109
#if defined(ATARI) || defined(atarist)
110
#  define OS_CODE  0x05
111
#endif
112
 
113
#if defined(MACOS) || defined(TARGET_OS_MAC)
114
#  define OS_CODE  0x07
115
#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
116
#    include <unix.h> /* for fdopen */
117
#  else
118
#    ifndef fdopen
119
#      define fdopen(fd,mode) NULL /* No fdopen() */
120
#    endif
121
#  endif
122
#endif
123
 
124
#ifdef __50SERIES /* Prime/PRIMOS */
125
#  define OS_CODE  0x0F
126
#endif
127
 
128
#ifdef TOPS20
129
#  define OS_CODE  0x0a
130
#endif
131
 
132
#if defined(_BEOS_) || defined(RISCOS)
133
#  define fdopen(fd,mode) NULL /* No fdopen() */
134
#endif
135
 
136
#if (defined(_MSC_VER) && (_MSC_VER > 600))
137
#  define fdopen(fd,type)  _fdopen(fd,type)
138
#endif
139
 
140
 
141
        /* Common defaults */
142
 
143
#ifndef OS_CODE
144
#  define OS_CODE  0x03  /* assume Unix */
145
#endif
146
 
147
#ifndef F_OPEN
148
#  define F_OPEN(name, mode) fopen((name), (mode))
149
#endif
150
 
151
         /* functions */
152
 
153
#ifdef HAVE_STRERROR
154
   extern char *strerror OF((int));
155
#  define zstrerror(errnum) strerror(errnum)
156
#else
157
#  define zstrerror(errnum) ""
158
#endif
159
 
160
#if defined(pyr)
161
#  define NO_MEMCPY
162
#endif
163
#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
164
 /* Use our own functions for small and medium model with MSC <= 5.0.
165
  * You may have to use the same strategy for Borland C (untested).
166
  * The __SC__ check is for Symantec.
167
  */
168
#  define NO_MEMCPY
169
#endif
170
#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
171
#  define HAVE_MEMCPY
172
#endif
173
#ifdef HAVE_MEMCPY
174
#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
175
#    define zmemcpy _fmemcpy
176
#    define zmemcmp _fmemcmp
177
#    define zmemzero(dest, len) _fmemset(dest, 0, len)
178
#  else
179
#    define zmemcpy memcpy
180
#    define zmemcmp memcmp
181
#    define zmemzero(dest, len) memset(dest, 0, len)
182
#  endif
183
#else
184
   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
185
   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
186
   extern void zmemzero OF((Bytef* dest, uInt len));
187
#endif
188
 
189
/* Diagnostic functions */
190
#ifdef DEBUG
191
#  include <stdio.h>
192
   extern int z_verbose;
193
   extern void z_error    OF((char *m));
194
#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
195
#  define Trace(stderr,x) {if (z_verbose>=0) cprintf x ;}
196
#  define Tracev(stderr,x) {if (z_verbose>0) cprintf x ;}
197
#  define Tracevv(stderr,x) {if (z_verbose>1) cprintf x ;}
198
#  define Tracec(c,(stderr,x)) {if (z_verbose>0 && (c)) cprintf (x) ;}
199
#  define Tracecv(c,(stderr,x)) {if (z_verbose>1 && (c)) cprintf (x) ;}
200
#else
201
#  define Assert(cond,msg)
202
#  define Trace(x)
203
#  define Tracev(x)
204
#  define Tracevv(x)
205
#  define Tracec(c,x)
206
#  define Tracecv(c,x)
207
#endif
208
 
209
 
210
typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,
211
                                       uInt len));
212
voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
213
void   zcfree  OF((voidpf opaque, voidpf ptr));
214
 
215
#define ZALLOC(strm, items, size) \
216
           (*((strm)->zalloc))((strm)->opaque, (items), (size))
217
#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
218
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
219
 
220
#endif /* _Z_UTIL_H */