1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation. Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24
25 /* zutil.h -- internal interface and configuration of the compression library
26 * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
27 * For conditions of distribution and use, see copyright notice in zlib.h
28 */
29
30 /* WARNING: this file should *not* be used by applications. It is
31 part of the implementation of the compression library and is
32 subject to change. Applications should only use zlib.h.
33 */
34
35 /* @(#) $Id$ */
36
37 #ifndef ZUTIL_H
38 #define ZUTIL_H
39
40 #ifdef HAVE_HIDDEN
41 # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
42 #else
43 # define ZLIB_INTERNAL
44 #endif
45
46 #include "zlib.h"
47
48 #if defined(STDC) && !defined(Z_SOLO)
49 # if !(defined(_WIN32_WCE) && defined(_MSC_VER))
50 # include <stddef.h>
51 # endif
52 # include <string.h>
53 # include <stdlib.h>
54 #endif
55
56 #ifdef Z_SOLO
57 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */
58 #endif
59
60 #ifndef local
61 # define local static
62 #endif
63 /* since "static" is used to mean two completely different things in C, we
64 define "local" for the non-static meaning of "static", for readability
65 (compile with -Dlocal if your debugger can't find static symbols) */
66
67 typedef unsigned char uch;
68 typedef uch FAR uchf;
69 typedef unsigned short ush;
70 typedef ush FAR ushf;
71 typedef unsigned long ulg;
72
73 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
74 /* (size given to avoid silly warnings with Visual C++) */
75
76 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
77
78 #define ERR_RETURN(strm,err) \
79 return (strm->msg = ERR_MSG(err), (err))
80 /* To be used only when the state is known to be valid */
81
82 /* common constants */
83
84 #ifndef DEF_WBITS
85 # define DEF_WBITS MAX_WBITS
86 #endif
87 /* default windowBits for decompression. MAX_WBITS is for compression only */
88
89 #if MAX_MEM_LEVEL >= 8
90 # define DEF_MEM_LEVEL 8
91 #else
92 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
93 #endif
94 /* default memLevel */
95
96 #define STORED_BLOCK 0
97 #define STATIC_TREES 1
98 #define DYN_TREES 2
99 /* The three kinds of block type */
100
101 #define MIN_MATCH 3
102 #define MAX_MATCH 258
103 /* The minimum and maximum match lengths */
104
105 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
106
107 /* target dependencies */
108
109 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
110 # define OS_CODE 0x00
111 # ifndef Z_SOLO
112 # if defined(__TURBOC__) || defined(__BORLANDC__)
113 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
114 /* Allow compilation with ANSI keywords only enabled */
115 void _Cdecl farfree( void *block );
116 void *_Cdecl farmalloc( unsigned long nbytes );
117 # else
118 # include <alloc.h>
119 # endif
120 # else /* MSC or DJGPP */
121 # include <malloc.h>
122 # endif
123 # endif
124 #endif
125
126 #ifdef AMIGA
127 # define OS_CODE 1
128 #endif
129
130 #if defined(VAXC) || defined(VMS)
131 # define OS_CODE 2
132 # define F_OPEN(name, mode) \
133 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
134 #endif
135
136 #ifdef __370__
137 # if __TARGET_LIB__ < 0x20000000
138 # define OS_CODE 4
139 # elif __TARGET_LIB__ < 0x40000000
140 # define OS_CODE 11
141 # else
142 # define OS_CODE 8
143 # endif
144 #endif
145
146 #if defined(ATARI) || defined(atarist)
147 # define OS_CODE 5
148 #endif
149
150 #ifdef OS2
151 # define OS_CODE 6
152 # if defined(M_I86) && !defined(Z_SOLO)
153 # include <malloc.h>
154 # endif
155 #endif
156
157 #if defined(MACOS) || defined(TARGET_OS_MAC)
158 # define OS_CODE 7
159 # ifndef Z_SOLO
160 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
161 # include <unix.h> /* for fdopen */
162 # else
163 # ifndef fdopen
164 # define fdopen(fd,mode) NULL /* No fdopen() */
165 # endif
166 # endif
167 # endif
168 #endif
169
170 #ifdef __acorn
171 # define OS_CODE 13
172 #endif
173
174 #if defined(WIN32) && !defined(__CYGWIN__)
175 # define OS_CODE 10
176 #endif
177
178 #ifdef _BEOS_
179 # define OS_CODE 16
180 #endif
181
182 #ifdef __TOS_OS400__
183 # define OS_CODE 18
184 #endif
185
186 #ifdef __APPLE__
187 # define OS_CODE 19
188 #endif
189
190 #if defined(_BEOS_) || defined(RISCOS)
191 # define fdopen(fd,mode) NULL /* No fdopen() */
192 #endif
193
194 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
195 # if defined(_WIN32_WCE)
196 # define fdopen(fd,mode) NULL /* No fdopen() */
197 # ifndef _PTRDIFF_T_DEFINED
198 typedef int ptrdiff_t;
199 # define _PTRDIFF_T_DEFINED
200 # endif
201 # else
202 # define fdopen(fd,type) _fdopen(fd,type)
203 # endif
204 #endif
205
206 #if defined(__BORLANDC__) && !defined(MSDOS)
207 #pragma warn -8004
208 #pragma warn -8008
209 #pragma warn -8066
210 #endif
211
212 /* provide prototypes for these when building zlib without LFS */
213 #if !defined(_WIN32) && \
214 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
215 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
216 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
217 #endif
218
219 /* common defaults */
220
221 #ifndef OS_CODE
222 # define OS_CODE 3 /* assume Unix */
223 #endif
224
225 #ifndef F_OPEN
226 # define F_OPEN(name, mode) fopen((name), (mode))
227 #endif
228
229 /* functions */
230
231 #if defined(pyr) || defined(Z_SOLO)
232 # define NO_MEMCPY
233 #endif
234 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
235 /* Use our own functions for small and medium model with MSC <= 5.0.
236 * You may have to use the same strategy for Borland C (untested).
237 * The __SC__ check is for Symantec.
238 */
239 # define NO_MEMCPY
240 #endif
241 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
242 # define HAVE_MEMCPY
243 #endif
244 #ifdef HAVE_MEMCPY
245 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
246 # define zmemcpy _fmemcpy
247 # define zmemcmp _fmemcmp
248 # define zmemzero(dest, len) _fmemset(dest, 0, len)
249 # else
250 # define zmemcpy memcpy
251 # define zmemcmp memcmp
252 # define zmemzero(dest, len) memset(dest, 0, len)
253 # endif
254 #else
255 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
256 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
257 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
258 #endif
259
260 /* Diagnostic functions */
261 #ifdef ZLIB_DEBUG
262 # include <stdio.h>
263 extern int ZLIB_INTERNAL z_verbose;
264 extern void ZLIB_INTERNAL z_error OF((char *m));
265 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
266 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
267 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
268 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
269 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
270 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
271 #else
272 # define Assert(cond,msg)
273 # define Trace(x)
274 # define Tracev(x)
275 # define Tracevv(x)
276 # define Tracec(c,x)
277 # define Tracecv(c,x)
278 #endif
279
280 #ifndef Z_SOLO
281 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
282 unsigned size));
283 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
284 #endif
285
286 #define ZALLOC(strm, items, size) \
287 (*((strm)->zalloc))((strm)->opaque, (items), (size))
288 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
289 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
290
291 /* Reverse the bytes in a 32-bit value */
292 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
293 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
294
295 #endif /* ZUTIL_H */