1 | /* zutil.h -- internal interface and configuration of the compression library |
2 | * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler |
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 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 | #ifdef NO_ERRNO_H |
32 | # ifdef _WIN32_WCE |
33 | /* The Microsoft C Run-Time Library for Windows CE doesn't have |
34 | * errno. We define it as a global variable to simplify porting. |
35 | * Its value is always 0 and should not be used. We rename it to |
36 | * avoid conflict with other libraries that use the same workaround. |
37 | */ |
38 | # define errno z_errno |
39 | # endif |
40 | extern int errno; |
41 | #else |
42 | # ifndef _WIN32_WCE |
43 | # include <errno.h> |
44 | # endif |
45 | #endif |
46 | |
47 | #ifdef Z_SOLO |
48 | typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ |
49 | #endif |
50 | |
51 | #ifndef local |
52 | # define local static |
53 | #endif |
54 | /* since "static" is used to mean two completely different things in C, we |
55 | define "local" for the non-static meaning of "static", for readability |
56 | (compile with -Dlocal if your debugger can't find static symbols) */ |
57 | |
58 | typedef unsigned char uch; |
59 | typedef uch FAR uchf; |
60 | typedef unsigned short ush; |
61 | typedef ush FAR ushf; |
62 | typedef unsigned long ulg; |
63 | |
64 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
65 | /* (size given to avoid silly warnings with Visual C++) */ |
66 | |
67 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
68 | |
69 | #define ERR_RETURN(strm,err) \ |
70 | return (strm->msg = ERR_MSG(err), (err)) |
71 | /* To be used only when the state is known to be valid */ |
72 | |
73 | /* common constants */ |
74 | |
75 | #ifndef DEF_WBITS |
76 | # define DEF_WBITS MAX_WBITS |
77 | #endif |
78 | /* default windowBits for decompression. MAX_WBITS is for compression only */ |
79 | |
80 | #if MAX_MEM_LEVEL >= 8 |
81 | # define DEF_MEM_LEVEL 8 |
82 | #else |
83 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
84 | #endif |
85 | /* default memLevel */ |
86 | |
87 | #define STORED_BLOCK 0 |
88 | #define STATIC_TREES 1 |
89 | #define DYN_TREES 2 |
90 | /* The three kinds of block type */ |
91 | |
92 | #define MIN_MATCH 3 |
93 | #define MAX_MATCH 258 |
94 | /* The minimum and maximum match lengths */ |
95 | |
96 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
97 | |
98 | /* target dependencies */ |
99 | |
100 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
101 | # define OS_CODE 0x00 |
102 | # ifndef Z_SOLO |
103 | # if defined(__TURBOC__) || defined(__BORLANDC__) |
104 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
105 | /* Allow compilation with ANSI keywords only enabled */ |
106 | void _Cdecl farfree( void *block ); |
107 | void *_Cdecl farmalloc( unsigned long nbytes ); |
108 | # else |
109 | # include <alloc.h> |
110 | # endif |
111 | # else /* MSC or DJGPP */ |
112 | # include <malloc.h> |
113 | # endif |
114 | # endif |
115 | #endif |
116 | |
117 | #ifdef AMIGA |
118 | # define OS_CODE 1 |
119 | #endif |
120 | |
121 | #if defined(VAXC) || defined(VMS) |
122 | # define OS_CODE 2 |
123 | # define F_OPEN(name, mode) \ |
124 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
125 | #endif |
126 | |
127 | #ifdef __370__ |
128 | # if __TARGET_LIB__ < 0x20000000 |
129 | # define OS_CODE 4 |
130 | # elif __TARGET_LIB__ < 0x40000000 |
131 | # define OS_CODE 11 |
132 | # else |
133 | # define OS_CODE 8 |
134 | # endif |
135 | #endif |
136 | |
137 | #if defined(ATARI) || defined(atarist) |
138 | # define OS_CODE 5 |
139 | #endif |
140 | |
141 | #ifdef OS2 |
142 | # define OS_CODE 6 |
143 | # if defined(M_I86) && !defined(Z_SOLO) |
144 | # include <malloc.h> |
145 | # endif |
146 | #endif |
147 | |
148 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
149 | # define OS_CODE 7 |
150 | # ifndef Z_SOLO |
151 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
152 | # include <unix.h> /* for fdopen */ |
153 | # else |
154 | # ifndef fdopen |
155 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
156 | # endif |
157 | # endif |
158 | # endif |
159 | #endif |
160 | |
161 | #ifdef __acorn |
162 | # define OS_CODE 13 |
163 | #endif |
164 | |
165 | #if defined(WIN32) && !defined(__CYGWIN__) |
166 | # define OS_CODE 10 |
167 | #endif |
168 | |
169 | #ifdef _BEOS_ |
170 | # define OS_CODE 16 |
171 | #endif |
172 | |
173 | #ifdef __TOS_OS400__ |
174 | # define OS_CODE 18 |
175 | #endif |
176 | |
177 | #ifdef __APPLE__ |
178 | # define OS_CODE 19 |
179 | #endif |
180 | |
181 | #if defined(_BEOS_) || defined(RISCOS) |
182 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
183 | #endif |
184 | |
185 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX |
186 | # if defined(_WIN32_WCE) |
187 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
188 | # ifndef _PTRDIFF_T_DEFINED |
189 | typedef int ptrdiff_t; |
190 | # define _PTRDIFF_T_DEFINED |
191 | # endif |
192 | # else |
193 | # define fdopen(fd,type) _fdopen(fd,type) |
194 | # endif |
195 | #endif |
196 | |
197 | #if defined(__BORLANDC__) && !defined(MSDOS) |
198 | #pragma warn -8004 |
199 | #pragma warn -8008 |
200 | #pragma warn -8066 |
201 | #endif |
202 | |
203 | /* provide prototypes for these when building zlib without LFS */ |
204 | #if !defined(_WIN32) && \ |
205 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) |
206 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); |
207 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); |
208 | #endif |
209 | |
210 | /* common defaults */ |
211 | |
212 | #ifndef OS_CODE |
213 | # define OS_CODE 3 /* assume Unix */ |
214 | #endif |
215 | |
216 | #ifndef F_OPEN |
217 | # define F_OPEN(name, mode) fopen((name), (mode)) |
218 | #endif |
219 | |
220 | /* functions */ |
221 | |
222 | #if defined(pyr) || defined(Z_SOLO) |
223 | # define NO_MEMCPY |
224 | #endif |
225 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
226 | /* Use our own functions for small and medium model with MSC <= 5.0. |
227 | * You may have to use the same strategy for Borland C (untested). |
228 | * The __SC__ check is for Symantec. |
229 | */ |
230 | # define NO_MEMCPY |
231 | #endif |
232 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
233 | # define HAVE_MEMCPY |
234 | #endif |
235 | #ifdef HAVE_MEMCPY |
236 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
237 | # define zmemcpy _fmemcpy |
238 | # define zmemcmp _fmemcmp |
239 | # define zmemzero(dest, len) _fmemset(dest, 0, len) |
240 | # else |
241 | # define zmemcpy memcpy |
242 | # define zmemcmp memcmp |
243 | # define zmemzero(dest, len) memset(dest, 0, len) |
244 | # endif |
245 | #else |
246 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
247 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
248 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); |
249 | #endif |
250 | |
251 | /* Diagnostic functions */ |
252 | #ifdef ZLIB_DEBUG |
253 | # include <stdio.h> |
254 | extern int ZLIB_INTERNAL z_verbose; |
255 | extern void ZLIB_INTERNAL z_error OF((char *m)); |
256 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
257 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} |
258 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} |
259 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
260 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
261 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
262 | #else |
263 | # define Assert(cond,msg) |
264 | # define Trace(x) |
265 | # define Tracev(x) |
266 | # define Tracevv(x) |
267 | # define Tracec(c,x) |
268 | # define Tracecv(c,x) |
269 | #endif |
270 | |
271 | #ifndef Z_SOLO |
272 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, |
273 | unsigned size)); |
274 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); |
275 | #endif |
276 | |
277 | #define ZALLOC(strm, items, size) \ |
278 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) |
279 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
280 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
281 | |
282 | /* Reverse the bytes in a 32-bit value */ |
283 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ |
284 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) |
285 | |
286 | #ifdef _MSC_VER |
287 | #define zalign(x) __declspec(align(x)) |
288 | #else |
289 | #define zalign(x) __attribute__((aligned((x)))) |
290 | #endif |
291 | |
292 | #endif /* ZUTIL_H */ |
293 | |