]>
Commit | Line | Data |
---|---|---|
5ca28f79 | 1 | /* zutil.h -- internal interface and configuration of the compression library |
8e6b3536 | 2 | * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler |
5ca28f79 L |
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 | ||
8e6b3536 | 11 | /* @(#) $Id$ */ |
5ca28f79 L |
12 | |
13 | #ifndef ZUTIL_H | |
14 | #define ZUTIL_H | |
15 | ||
16 | #ifdef HAVE_HIDDEN | |
17 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) | |
18 | #else | |
19 | # define ZLIB_INTERNAL | |
20 | #endif | |
21 | ||
22 | #include "zlib.h" | |
23 | ||
24 | #if defined(STDC) && !defined(Z_SOLO) | |
25 | # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) | |
26 | # include <stddef.h> | |
27 | # endif | |
28 | # include <string.h> | |
29 | # include <stdlib.h> | |
30 | #endif | |
31 | ||
5ca28f79 L |
32 | #ifndef local |
33 | # define local static | |
34 | #endif | |
de1ab01e NC |
35 | /* since "static" is used to mean two completely different things in C, we |
36 | define "local" for the non-static meaning of "static", for readability | |
37 | (compile with -Dlocal if your debugger can't find static symbols) */ | |
5ca28f79 L |
38 | |
39 | typedef unsigned char uch; | |
40 | typedef uch FAR uchf; | |
41 | typedef unsigned short ush; | |
42 | typedef ush FAR ushf; | |
43 | typedef unsigned long ulg; | |
44 | ||
8e6b3536 NC |
45 | #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC) |
46 | # include <limits.h> | |
47 | # if (ULONG_MAX == 0xffffffffffffffff) | |
48 | # define Z_U8 unsigned long | |
49 | # elif (ULLONG_MAX == 0xffffffffffffffff) | |
50 | # define Z_U8 unsigned long long | |
51 | # elif (UINT_MAX == 0xffffffffffffffff) | |
52 | # define Z_U8 unsigned | |
53 | # endif | |
54 | #endif | |
55 | ||
da09a436 | 56 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
5ca28f79 L |
57 | /* (size given to avoid silly warnings with Visual C++) */ |
58 | ||
59 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] | |
60 | ||
61 | #define ERR_RETURN(strm,err) \ | |
da09a436 | 62 | return (strm->msg = ERR_MSG(err), (err)) |
5ca28f79 L |
63 | /* To be used only when the state is known to be valid */ |
64 | ||
65 | /* common constants */ | |
66 | ||
67 | #ifndef DEF_WBITS | |
68 | # define DEF_WBITS MAX_WBITS | |
69 | #endif | |
70 | /* default windowBits for decompression. MAX_WBITS is for compression only */ | |
71 | ||
72 | #if MAX_MEM_LEVEL >= 8 | |
73 | # define DEF_MEM_LEVEL 8 | |
74 | #else | |
75 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL | |
76 | #endif | |
77 | /* default memLevel */ | |
78 | ||
79 | #define STORED_BLOCK 0 | |
80 | #define STATIC_TREES 1 | |
81 | #define DYN_TREES 2 | |
82 | /* The three kinds of block type */ | |
83 | ||
84 | #define MIN_MATCH 3 | |
85 | #define MAX_MATCH 258 | |
86 | /* The minimum and maximum match lengths */ | |
87 | ||
88 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ | |
89 | ||
90 | /* target dependencies */ | |
91 | ||
92 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) | |
93 | # define OS_CODE 0x00 | |
94 | # ifndef Z_SOLO | |
95 | # if defined(__TURBOC__) || defined(__BORLANDC__) | |
96 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) | |
97 | /* Allow compilation with ANSI keywords only enabled */ | |
98 | void _Cdecl farfree( void *block ); | |
99 | void *_Cdecl farmalloc( unsigned long nbytes ); | |
100 | # else | |
101 | # include <alloc.h> | |
102 | # endif | |
103 | # else /* MSC or DJGPP */ | |
104 | # include <malloc.h> | |
105 | # endif | |
106 | # endif | |
107 | #endif | |
108 | ||
109 | #ifdef AMIGA | |
de1ab01e | 110 | # define OS_CODE 1 |
5ca28f79 L |
111 | #endif |
112 | ||
113 | #if defined(VAXC) || defined(VMS) | |
de1ab01e | 114 | # define OS_CODE 2 |
5ca28f79 L |
115 | # define F_OPEN(name, mode) \ |
116 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") | |
117 | #endif | |
118 | ||
de1ab01e NC |
119 | #ifdef __370__ |
120 | # if __TARGET_LIB__ < 0x20000000 | |
121 | # define OS_CODE 4 | |
122 | # elif __TARGET_LIB__ < 0x40000000 | |
123 | # define OS_CODE 11 | |
124 | # else | |
125 | # define OS_CODE 8 | |
126 | # endif | |
127 | #endif | |
128 | ||
5ca28f79 | 129 | #if defined(ATARI) || defined(atarist) |
de1ab01e | 130 | # define OS_CODE 5 |
5ca28f79 L |
131 | #endif |
132 | ||
133 | #ifdef OS2 | |
de1ab01e | 134 | # define OS_CODE 6 |
5ca28f79 L |
135 | # if defined(M_I86) && !defined(Z_SOLO) |
136 | # include <malloc.h> | |
137 | # endif | |
138 | #endif | |
139 | ||
140 | #if defined(MACOS) || defined(TARGET_OS_MAC) | |
de1ab01e | 141 | # define OS_CODE 7 |
5ca28f79 L |
142 | # ifndef Z_SOLO |
143 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os | |
144 | # include <unix.h> /* for fdopen */ | |
145 | # else | |
146 | # ifndef fdopen | |
147 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
148 | # endif | |
149 | # endif | |
150 | # endif | |
151 | #endif | |
152 | ||
de1ab01e NC |
153 | #ifdef __acorn |
154 | # define OS_CODE 13 | |
5ca28f79 L |
155 | #endif |
156 | ||
de1ab01e NC |
157 | #if defined(WIN32) && !defined(__CYGWIN__) |
158 | # define OS_CODE 10 | |
159 | #endif | |
160 | ||
161 | #ifdef _BEOS_ | |
162 | # define OS_CODE 16 | |
163 | #endif | |
164 | ||
165 | #ifdef __TOS_OS400__ | |
166 | # define OS_CODE 18 | |
5ca28f79 L |
167 | #endif |
168 | ||
de1ab01e NC |
169 | #ifdef __APPLE__ |
170 | # define OS_CODE 19 | |
5ca28f79 L |
171 | #endif |
172 | ||
173 | #if defined(_BEOS_) || defined(RISCOS) | |
174 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
175 | #endif | |
176 | ||
177 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX | |
178 | # if defined(_WIN32_WCE) | |
179 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
5ca28f79 L |
180 | # else |
181 | # define fdopen(fd,type) _fdopen(fd,type) | |
182 | # endif | |
183 | #endif | |
184 | ||
185 | #if defined(__BORLANDC__) && !defined(MSDOS) | |
186 | #pragma warn -8004 | |
187 | #pragma warn -8008 | |
188 | #pragma warn -8066 | |
189 | #endif | |
190 | ||
191 | /* provide prototypes for these when building zlib without LFS */ | |
da09a436 JB |
192 | #if !defined(_WIN32) && \ |
193 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) | |
5ca28f79 L |
194 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); |
195 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); | |
196 | #endif | |
197 | ||
198 | /* common defaults */ | |
199 | ||
200 | #ifndef OS_CODE | |
de1ab01e | 201 | # define OS_CODE 3 /* assume Unix */ |
5ca28f79 L |
202 | #endif |
203 | ||
204 | #ifndef F_OPEN | |
205 | # define F_OPEN(name, mode) fopen((name), (mode)) | |
206 | #endif | |
207 | ||
208 | /* functions */ | |
209 | ||
210 | #if defined(pyr) || defined(Z_SOLO) | |
211 | # define NO_MEMCPY | |
212 | #endif | |
213 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) | |
214 | /* Use our own functions for small and medium model with MSC <= 5.0. | |
215 | * You may have to use the same strategy for Borland C (untested). | |
216 | * The __SC__ check is for Symantec. | |
217 | */ | |
218 | # define NO_MEMCPY | |
219 | #endif | |
220 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) | |
221 | # define HAVE_MEMCPY | |
222 | #endif | |
223 | #ifdef HAVE_MEMCPY | |
224 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ | |
225 | # define zmemcpy _fmemcpy | |
226 | # define zmemcmp _fmemcmp | |
227 | # define zmemzero(dest, len) _fmemset(dest, 0, len) | |
228 | # else | |
229 | # define zmemcpy memcpy | |
230 | # define zmemcmp memcmp | |
231 | # define zmemzero(dest, len) memset(dest, 0, len) | |
232 | # endif | |
233 | #else | |
234 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); | |
235 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); | |
236 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); | |
237 | #endif | |
238 | ||
239 | /* Diagnostic functions */ | |
de1ab01e | 240 | #ifdef ZLIB_DEBUG |
5ca28f79 L |
241 | # include <stdio.h> |
242 | extern int ZLIB_INTERNAL z_verbose; | |
243 | extern void ZLIB_INTERNAL z_error OF((char *m)); | |
244 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} | |
245 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} | |
246 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} | |
247 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} | |
248 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} | |
249 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} | |
250 | #else | |
251 | # define Assert(cond,msg) | |
252 | # define Trace(x) | |
253 | # define Tracev(x) | |
254 | # define Tracevv(x) | |
255 | # define Tracec(c,x) | |
256 | # define Tracecv(c,x) | |
257 | #endif | |
258 | ||
259 | #ifndef Z_SOLO | |
260 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, | |
261 | unsigned size)); | |
262 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); | |
263 | #endif | |
264 | ||
265 | #define ZALLOC(strm, items, size) \ | |
266 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) | |
267 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) | |
268 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} | |
269 | ||
270 | /* Reverse the bytes in a 32-bit value */ | |
271 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ | |
272 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) | |
273 | ||
274 | #endif /* ZUTIL_H */ |