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comparison lib/zlib/zutil.h @ 0:9c0607679772

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author Ritor1
date Sat, 12 Jan 2013 09:45:18 +0600
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children f4af3b203f65
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-1:000000000000 0:9c0607679772
1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-1998 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 /* @(#) $Id$ */
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 */
87 # include <malloc.h>
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(x) {if (z_verbose>=0) fprintf x ;}
196 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
197 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
198 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
199 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf 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 */