1 | /* |
2 | * Copyright (c) 2008 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* zutil.h -- internal interface and configuration of the compression library |
29 | * Copyright (C) 1995-2005 Jean-loup Gailly. |
30 | * For conditions of distribution and use, see copyright notice in zlib.h |
31 | */ |
32 | |
33 | /* WARNING: this file should *not* be used by applications. It is |
34 | part of the implementation of the compression library and is |
35 | subject to change. Applications should only use zlib.h. |
36 | */ |
37 | |
38 | /* @(#) $Id$ */ |
39 | |
40 | #ifndef ZUTIL_H |
41 | #define ZUTIL_H |
42 | |
43 | #define ZLIB_INTERNAL |
44 | |
45 | #if KERNEL |
46 | # include <libkern/zlib.h> |
47 | # include <string.h> |
48 | # ifndef NO_ERRNO_H |
49 | # define NO_ERRNO_H 1 |
50 | # endif |
51 | # ifndef NO_ZCFUNCS |
52 | # define NO_ZCFUNCS 1 |
53 | # endif |
54 | #else |
55 | # include "zlib.h" |
56 | # ifdef STDC |
57 | # ifndef _WIN32_WCE |
58 | # include <stddef.h> |
59 | # endif |
60 | # include <string.h> |
61 | # include <stdlib.h> |
62 | # endif |
63 | #endif /* KERNEL */ |
64 | |
65 | #ifdef NO_ERRNO_H |
66 | # ifdef _WIN32_WCE |
67 | /* The Microsoft C Run-Time Library for Windows CE doesn't have |
68 | * errno. We define it as a global variable to simplify porting. |
69 | * Its value is always 0 and should not be used. We rename it to |
70 | * avoid conflict with other libraries that use the same workaround. |
71 | */ |
72 | # define errno z_errno |
73 | # endif |
74 | extern int errno; |
75 | #else |
76 | # ifndef _WIN32_WCE |
77 | # include <errno.h> |
78 | # endif |
79 | #endif |
80 | |
81 | #ifndef local |
82 | # define local static |
83 | #endif |
84 | /* compile with -Dlocal if your debugger can't find static symbols */ |
85 | |
86 | typedef unsigned char uch; |
87 | typedef uch FAR uchf; |
88 | typedef unsigned short ush; |
89 | typedef ush FAR ushf; |
90 | typedef unsigned long ulg; |
91 | |
92 | extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
93 | /* (size given to avoid silly warnings with Visual C++) */ |
94 | |
95 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
96 | |
97 | #define ERR_RETURN(strm,err) \ |
98 | return (strm->msg = (char*)ERR_MSG(err), (err)) |
99 | /* To be used only when the state is known to be valid */ |
100 | |
101 | /* common constants */ |
102 | |
103 | #ifndef DEF_WBITS |
104 | # define DEF_WBITS MAX_WBITS |
105 | #endif |
106 | /* default windowBits for decompression. MAX_WBITS is for compression only */ |
107 | |
108 | #if MAX_MEM_LEVEL >= 8 |
109 | # define DEF_MEM_LEVEL 8 |
110 | #else |
111 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
112 | #endif |
113 | /* default memLevel */ |
114 | |
115 | #define STORED_BLOCK 0 |
116 | #define STATIC_TREES 1 |
117 | #define DYN_TREES 2 |
118 | /* The three kinds of block type */ |
119 | |
120 | #define MIN_MATCH 3 |
121 | #define MAX_MATCH 258 |
122 | /* The minimum and maximum match lengths */ |
123 | |
124 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
125 | |
126 | /* target dependencies */ |
127 | |
128 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
129 | # define OS_CODE 0x00 |
130 | # if defined(__TURBOC__) || defined(__BORLANDC__) |
131 | # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
132 | /* Allow compilation with ANSI keywords only enabled */ |
133 | void _Cdecl farfree( void *block ); |
134 | void *_Cdecl farmalloc( unsigned long nbytes ); |
135 | # else |
136 | # include <alloc.h> |
137 | # endif |
138 | # else /* MSC or DJGPP */ |
139 | # include <malloc.h> |
140 | # endif |
141 | #endif |
142 | |
143 | #ifdef AMIGA |
144 | # define OS_CODE 0x01 |
145 | #endif |
146 | |
147 | #if defined(VAXC) || defined(VMS) |
148 | # define OS_CODE 0x02 |
149 | # define F_OPEN(name, mode) \ |
150 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
151 | #endif |
152 | |
153 | #if defined(ATARI) || defined(atarist) |
154 | # define OS_CODE 0x05 |
155 | #endif |
156 | |
157 | #ifdef OS2 |
158 | # define OS_CODE 0x06 |
159 | # ifdef M_I86 |
160 | #include <malloc.h> |
161 | # endif |
162 | #endif |
163 | |
164 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
165 | # define OS_CODE 0x07 |
166 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
167 | # include <unix.h> /* for fdopen */ |
168 | # else |
169 | # ifndef fdopen |
170 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
171 | # endif |
172 | # endif |
173 | #endif |
174 | |
175 | #ifdef TOPS20 |
176 | # define OS_CODE 0x0a |
177 | #endif |
178 | |
179 | #ifdef WIN32 |
180 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ |
181 | # define OS_CODE 0x0b |
182 | # endif |
183 | #endif |
184 | |
185 | #ifdef __50SERIES /* Prime/PRIMOS */ |
186 | # define OS_CODE 0x0f |
187 | #endif |
188 | |
189 | #if defined(_BEOS_) || defined(RISCOS) |
190 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
191 | #endif |
192 | |
193 | #if KERNEL |
194 | typedef long ptrdiff_t; |
195 | #elif (defined(_MSC_VER) && (_MSC_VER > 600)) |
196 | # if defined(_WIN32_WCE) |
197 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
198 | # ifndef _PTRDIFF_T_DEFINED |
199 | typedef int ptrdiff_t; |
200 | # define _PTRDIFF_T_DEFINED |
201 | # endif |
202 | # else |
203 | # define fdopen(fd,type) _fdopen(fd,type) |
204 | # endif |
205 | #endif |
206 | |
207 | |
208 | /* common defaults */ |
209 | |
210 | #ifndef OS_CODE |
211 | # define OS_CODE 0x03 /* assume Unix */ |
212 | #endif |
213 | |
214 | #ifndef F_OPEN |
215 | # define F_OPEN(name, mode) fopen((name), (mode)) |
216 | #endif |
217 | |
218 | /* functions */ |
219 | |
220 | #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) |
221 | # ifndef HAVE_VSNPRINTF |
222 | # define HAVE_VSNPRINTF |
223 | # endif |
224 | #endif |
225 | #if defined(__CYGWIN__) |
226 | # ifndef HAVE_VSNPRINTF |
227 | # define HAVE_VSNPRINTF |
228 | # endif |
229 | #endif |
230 | #ifndef HAVE_VSNPRINTF |
231 | # ifdef MSDOS |
232 | /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), |
233 | but for now we just assume it doesn't. */ |
234 | # define NO_vsnprintf |
235 | # endif |
236 | # ifdef __TURBOC__ |
237 | # define NO_vsnprintf |
238 | # endif |
239 | # ifdef WIN32 |
240 | /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ |
241 | # if !defined(vsnprintf) && !defined(NO_vsnprintf) |
242 | # define vsnprintf _vsnprintf |
243 | # endif |
244 | # endif |
245 | # ifdef __SASC |
246 | # define NO_vsnprintf |
247 | # endif |
248 | #endif |
249 | #ifdef VMS |
250 | # define NO_vsnprintf |
251 | #endif |
252 | |
253 | #if defined(pyr) |
254 | # define NO_MEMCPY |
255 | #endif |
256 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
257 | /* Use our own functions for small and medium model with MSC <= 5.0. |
258 | * You may have to use the same strategy for Borland C (untested). |
259 | * The __SC__ check is for Symantec. |
260 | */ |
261 | # define NO_MEMCPY |
262 | #endif |
263 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
264 | # define HAVE_MEMCPY |
265 | #endif |
266 | #ifdef HAVE_MEMCPY |
267 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
268 | # define zmemcpy _fmemcpy |
269 | # define zmemcmp _fmemcmp |
270 | # define zmemzero(dest, len) _fmemset(dest, 0, len) |
271 | # else |
272 | # define zmemcpy memcpy |
273 | # define zmemcmp memcmp |
274 | # define zmemzero(dest, len) memset(dest, 0, len) |
275 | # endif |
276 | #else |
277 | extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
278 | extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
279 | extern void zmemzero OF((Bytef* dest, uInt len)); |
280 | #endif |
281 | |
282 | /* Diagnostic functions */ |
283 | #if defined(DEBUG) && !defined(KERNEL) |
284 | # include <stdio.h> |
285 | extern int z_verbose; |
286 | extern void z_error OF((char *m)); |
287 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
288 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} |
289 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} |
290 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
291 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
292 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
293 | #else |
294 | # define Assert(cond,msg) |
295 | # define Trace(x) |
296 | # define Tracev(x) |
297 | # define Tracevv(x) |
298 | # define Tracec(c,x) |
299 | # define Tracecv(c,x) |
300 | #endif |
301 | #undef DEBUG |
302 | |
303 | #ifndef NO_ZCFUNCS |
304 | voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); |
305 | void zcfree OF((voidpf opaque, voidpf ptr)); |
306 | #endif /* NO_ZCFUNCS */ |
307 | |
308 | #define ZALLOC(strm, items, size) \ |
309 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) |
310 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
311 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
312 | |
313 | #endif /* ZUTIL_H */ |
314 | |