]>
Commit | Line | Data |
---|---|---|
c801d85f | 1 | /* zutil.h -- internal interface and configuration of the compression library |
772513d8 | 2 | * Copyright (C) 1995-2013 Jean-loup Gailly. |
c801d85f KB |
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 | ||
c801d85f | 11 | |
51dbdf87 VS |
12 | #ifndef ZUTIL_H |
13 | #define ZUTIL_H | |
c801d85f | 14 | |
772513d8 VZ |
15 | #ifdef HAVE_HIDDEN |
16 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) | |
17 | #else | |
18 | # define ZLIB_INTERNAL | |
19 | #endif | |
20 | ||
51dbdf87 | 21 | #include "zlib.h" |
c801d85f | 22 | |
772513d8 VZ |
23 | #if defined(STDC) && !defined(Z_SOLO) |
24 | # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) | |
41faf807 MW |
25 | # include <stddef.h> |
26 | # endif | |
c801d85f KB |
27 | # include <string.h> |
28 | # include <stdlib.h> | |
29 | #endif | |
772513d8 VZ |
30 | |
31 | #ifdef Z_SOLO | |
32 | typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ | |
c801d85f KB |
33 | #endif |
34 | ||
35 | #ifndef local | |
36 | # define local static | |
37 | #endif | |
3dd4e4e0 | 38 | /* compile with -Dlocal if your debugger can't find static symbols */ |
c801d85f KB |
39 | |
40 | typedef unsigned char uch; | |
41 | typedef uch FAR uchf; | |
42 | typedef unsigned short ush; | |
43 | typedef ush FAR ushf; | |
44 | typedef unsigned long ulg; | |
45 | ||
772513d8 | 46 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
c801d85f KB |
47 | /* (size given to avoid silly warnings with Visual C++) */ |
48 | ||
49 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] | |
50 | ||
51 | #define ERR_RETURN(strm,err) \ | |
772513d8 | 52 | return (strm->msg = ERR_MSG(err), (err)) |
c801d85f KB |
53 | /* To be used only when the state is known to be valid */ |
54 | ||
55 | /* common constants */ | |
56 | ||
57 | #ifndef DEF_WBITS | |
58 | # define DEF_WBITS MAX_WBITS | |
59 | #endif | |
60 | /* default windowBits for decompression. MAX_WBITS is for compression only */ | |
61 | ||
62 | #if MAX_MEM_LEVEL >= 8 | |
63 | # define DEF_MEM_LEVEL 8 | |
64 | #else | |
65 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL | |
66 | #endif | |
67 | /* default memLevel */ | |
68 | ||
69 | #define STORED_BLOCK 0 | |
70 | #define STATIC_TREES 1 | |
71 | #define DYN_TREES 2 | |
72 | /* The three kinds of block type */ | |
73 | ||
74 | #define MIN_MATCH 3 | |
75 | #define MAX_MATCH 258 | |
76 | /* The minimum and maximum match lengths */ | |
77 | ||
78 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ | |
79 | ||
80 | /* target dependencies */ | |
81 | ||
51dbdf87 | 82 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
c801d85f | 83 | # define OS_CODE 0x00 |
772513d8 VZ |
84 | # ifndef Z_SOLO |
85 | # if defined(__TURBOC__) || defined(__BORLANDC__) | |
86 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) | |
87 | /* Allow compilation with ANSI keywords only enabled */ | |
88 | void _Cdecl farfree( void *block ); | |
89 | void *_Cdecl farmalloc( unsigned long nbytes ); | |
90 | # else | |
91 | # include <alloc.h> | |
92 | # endif | |
93 | # else /* MSC or DJGPP */ | |
94 | # include <malloc.h> | |
c801d85f | 95 | # endif |
c801d85f KB |
96 | # endif |
97 | #endif | |
98 | ||
51dbdf87 VS |
99 | #ifdef AMIGA |
100 | # define OS_CODE 0x01 | |
c801d85f KB |
101 | #endif |
102 | ||
103 | #if defined(VAXC) || defined(VMS) | |
104 | # define OS_CODE 0x02 | |
105 | # define F_OPEN(name, mode) \ | |
106 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") | |
107 | #endif | |
108 | ||
c801d85f KB |
109 | #if defined(ATARI) || defined(atarist) |
110 | # define OS_CODE 0x05 | |
111 | #endif | |
112 | ||
51dbdf87 VS |
113 | #ifdef OS2 |
114 | # define OS_CODE 0x06 | |
772513d8 VZ |
115 | # if defined(M_I86) && !defined(Z_SOLO) |
116 | # include <malloc.h> | |
41faf807 | 117 | # endif |
51dbdf87 VS |
118 | #endif |
119 | ||
c801d85f KB |
120 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
121 | # define OS_CODE 0x07 | |
772513d8 VZ |
122 | # ifndef Z_SOLO |
123 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os | |
124 | # include <unix.h> /* for fdopen */ | |
125 | # else | |
126 | # ifndef fdopen | |
127 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
128 | # endif | |
51dbdf87 | 129 | # endif |
c801d85f KB |
130 | # endif |
131 | #endif | |
51dbdf87 VS |
132 | |
133 | #ifdef TOPS20 | |
134 | # define OS_CODE 0x0a | |
c801d85f KB |
135 | #endif |
136 | ||
51dbdf87 VS |
137 | #ifdef WIN32 |
138 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ | |
139 | # define OS_CODE 0x0b | |
140 | # endif | |
c801d85f KB |
141 | #endif |
142 | ||
51dbdf87 VS |
143 | #ifdef __50SERIES /* Prime/PRIMOS */ |
144 | # define OS_CODE 0x0f | |
c801d85f KB |
145 | #endif |
146 | ||
147 | #if defined(_BEOS_) || defined(RISCOS) | |
148 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
149 | #endif | |
150 | ||
772513d8 | 151 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX |
51dbdf87 VS |
152 | # if defined(_WIN32_WCE) |
153 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
154 | # ifndef _PTRDIFF_T_DEFINED | |
155 | typedef int ptrdiff_t; | |
156 | # define _PTRDIFF_T_DEFINED | |
157 | # endif | |
158 | # else | |
159 | # define fdopen(fd,type) _fdopen(fd,type) | |
160 | # endif | |
c801d85f KB |
161 | #endif |
162 | ||
772513d8 VZ |
163 | #if defined(__BORLANDC__) && !defined(MSDOS) |
164 | #pragma warn -8004 | |
165 | #pragma warn -8008 | |
166 | #pragma warn -8066 | |
167 | #endif | |
168 | ||
169 | /* provide prototypes for these when building zlib without LFS */ | |
170 | #if !defined(_WIN32) && \ | |
171 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) | |
172 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); | |
173 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); | |
174 | #endif | |
175 | ||
51dbdf87 | 176 | /* common defaults */ |
c801d85f KB |
177 | |
178 | #ifndef OS_CODE | |
179 | # define OS_CODE 0x03 /* assume Unix */ | |
180 | #endif | |
181 | ||
182 | #ifndef F_OPEN | |
183 | # define F_OPEN(name, mode) fopen((name), (mode)) | |
184 | #endif | |
185 | ||
186 | /* functions */ | |
187 | ||
772513d8 | 188 | #if defined(pyr) || defined(Z_SOLO) |
c801d85f KB |
189 | # define NO_MEMCPY |
190 | #endif | |
191 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) | |
192 | /* Use our own functions for small and medium model with MSC <= 5.0. | |
193 | * You may have to use the same strategy for Borland C (untested). | |
194 | * The __SC__ check is for Symantec. | |
195 | */ | |
196 | # define NO_MEMCPY | |
197 | #endif | |
198 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) | |
199 | # define HAVE_MEMCPY | |
200 | #endif | |
201 | #ifdef HAVE_MEMCPY | |
202 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ | |
203 | # define zmemcpy _fmemcpy | |
204 | # define zmemcmp _fmemcmp | |
205 | # define zmemzero(dest, len) _fmemset(dest, 0, len) | |
206 | # else | |
207 | # define zmemcpy memcpy | |
208 | # define zmemcmp memcmp | |
209 | # define zmemzero(dest, len) memset(dest, 0, len) | |
210 | # endif | |
211 | #else | |
772513d8 VZ |
212 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
213 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); | |
214 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); | |
c801d85f KB |
215 | #endif |
216 | ||
217 | /* Diagnostic functions */ | |
51dbdf87 | 218 | #ifdef DEBUG |
c801d85f | 219 | # include <stdio.h> |
772513d8 VZ |
220 | extern int ZLIB_INTERNAL z_verbose; |
221 | extern void ZLIB_INTERNAL z_error OF((char *m)); | |
c801d85f KB |
222 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
223 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} | |
224 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} | |
225 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} | |
226 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} | |
227 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} | |
228 | #else | |
229 | # define Assert(cond,msg) | |
230 | # define Trace(x) | |
231 | # define Tracev(x) | |
232 | # define Tracevv(x) | |
233 | # define Tracec(c,x) | |
234 | # define Tracecv(c,x) | |
235 | #endif | |
236 | ||
772513d8 VZ |
237 | #ifndef Z_SOLO |
238 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, | |
239 | unsigned size)); | |
240 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); | |
241 | #endif | |
c801d85f KB |
242 | |
243 | #define ZALLOC(strm, items, size) \ | |
244 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) | |
245 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) | |
246 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} | |
247 | ||
772513d8 VZ |
248 | /* Reverse the bytes in a 32-bit value */ |
249 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ | |
250 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) | |
251 | ||
51dbdf87 | 252 | #endif /* ZUTIL_H */ |