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comparison zlib/zutil.h @ 3:5a977ccbc7a9 default tip

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author darius
date Sat, 06 Dec 1997 05:41:29 +0000
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2:fba0b6e6cdc7 3:5a977ccbc7a9
1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995 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: zutil.h,v 1.1.1.1 1997/12/06 05:41:38 darius Exp $ */
12
13 #ifndef _Z_UTIL_H
14 #define _Z_UTIL_H
15
16 #include "zlib.h"
17
18 #ifdef __GNUC__
19 # define INLINE inline
20 #else
21 # define INLINE
22 #endif
23
24 #ifdef MSDOS
25 # include <stddef.h>
26 # include <errno.h>
27 #else
28 extern int errno;
29 #endif
30 #ifdef STDC
31 # include <string.h>
32 #endif
33
34 #ifndef local
35 # define local static
36 #endif
37 /* compile with -Dlocal if your debugger can't find static symbols */
38
39 typedef unsigned char uch;
40 typedef unsigned short ush;
41 typedef unsigned long ulg;
42
43 extern char *z_errmsg[]; /* indexed by 1-zlib_error */
44
45 #define ERR_RETURN(strm,err) return (strm->msg=z_errmsg[1-err], err)
46 /* To be used only when the state is known to be valid */
47
48 /* common constants */
49
50 #define DEFLATED 8
51
52 #define DEF_WBITS 15
53 /* default windowBits for decompression. MAX_WBITS is for compression only */
54
55 #if MAX_MEM_LEVEL >= 8
56 # define DEF_MEM_LEVEL 8
57 #else
58 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
59 #endif
60 /* default memLevel */
61
62 #define STORED_BLOCK 0
63 #define STATIC_TREES 1
64 #define DYN_TREES 2
65 /* The three kinds of block type */
66
67 #define MIN_MATCH 3
68 #define MAX_MATCH 258
69 /* The minimum and maximum match lengths */
70
71 /* target dependencies */
72
73 #ifdef MSDOS
74 # define OS_CODE 0x00
75 # ifdef __TURBOC__
76 # include <alloc.h>
77 # else /* MSC */
78 # include <malloc.h>
79 # endif
80 #endif
81
82 #ifdef OS2
83 # define OS_CODE 0x06
84 #endif
85
86 #ifdef WIN32 /* Windows NT */
87 # define OS_CODE 0x0b
88 #endif
89
90 #if defined(VAXC) || defined(VMS)
91 # define OS_CODE 0x02
92 # define FOPEN(name, mode) \
93 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
94 #endif
95
96 #ifdef AMIGA
97 # define OS_CODE 0x01
98 #endif
99
100 #if defined(ATARI) || defined(atarist)
101 # define OS_CODE 0x05
102 #endif
103
104 #ifdef MACOS
105 # define OS_CODE 0x07
106 #endif
107
108 #ifdef __50SERIES /* Prime/PRIMOS */
109 # define OS_CODE 0x0F
110 #endif
111
112 #ifdef TOPS20
113 # define OS_CODE 0x0a
114 #endif
115
116 /* Common defaults */
117
118 #ifndef OS_CODE
119 # define OS_CODE 0x03 /* assume Unix */
120 #endif
121
122 #ifndef FOPEN
123 # define FOPEN(name, mode) fopen((name), (mode))
124 #endif
125
126 /* functions */
127
128 #ifdef HAVE_STRERROR
129 extern char *strerror __P((int));
130 # define zstrerror(errnum) strerror(errnum)
131 #else
132 # define zstrerror(errnum) ""
133 #endif
134
135 #if defined(pyr) && !defined(NO_MEMCPY)
136 # define NO_MEMCPY
137 #endif
138 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
139 # define HAVE_MEMCPY
140 #endif
141 #ifdef HAVE_MEMCPY
142 # define zmemcpy memcpy
143 # define zmemzero(dest, len) memset(dest, 0, len)
144 #else
145 extern void zmemcpy __P((Byte* dest, Byte* source, uInt len));
146 extern void zmemzero __P((Byte* dest, uInt len));
147 #endif
148
149 /* Diagnostic functions */
150 #ifdef DEBUG
151 # include <stdio.h>
152 # ifndef verbose
153 # define verbose 0
154 # endif
155 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
156 # define Trace(x) fprintf x
157 # define Tracev(x) {if (verbose) fprintf x ;}
158 # define Tracevv(x) {if (verbose>1) fprintf x ;}
159 # define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
160 # define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
161 #else
162 # define Assert(cond,msg)
163 # define Trace(x)
164 # define Tracev(x)
165 # define Tracevv(x)
166 # define Tracec(c,x)
167 # define Tracecv(c,x)
168 #endif
169
170
171 typedef uLong (*check_func) __P((uLong check, Byte *buf, uInt len));
172
173 extern void z_error __P((char *m));
174
175 voidp zcalloc __P((voidp opaque, unsigned items, unsigned size));
176 void zcfree __P((voidp opaque, voidp ptr));
177
178 #define ZALLOC(strm, items, size) \
179 (*((strm)->zalloc))((strm)->opaque, (items), (size))
180 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidp)(addr))
181 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
182
183 #endif /* _Z_UTIL_H */