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) 1995-2013 Jean-loup Gailly.
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 /* compile with -Dlocal if your debugger can't find static symbols */
64
65 typedef unsigned char uch;
66 typedef uch FAR uchf;
67 typedef unsigned short ush;
68 typedef ush FAR ushf;
69 typedef unsigned long ulg;
70
71 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
72 /* (size given to avoid silly warnings with Visual C++) */
73
74 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
75
76 #define ERR_RETURN(strm,err) \
77 return (strm->msg = ERR_MSG(err), (err))
78 /* To be used only when the state is known to be valid */
79
80 /* common constants */
81
82 #ifndef DEF_WBITS
83 # define DEF_WBITS MAX_WBITS
84 #endif
85 /* default windowBits for decompression. MAX_WBITS is for compression only */
86
87 #if MAX_MEM_LEVEL >= 8
88 # define DEF_MEM_LEVEL 8
89 #else
90 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
91 #endif
92 /* default memLevel */
93
94 #define STORED_BLOCK 0
95 #define STATIC_TREES 1
96 #define DYN_TREES 2
97 /* The three kinds of block type */
98
99 #define MIN_MATCH 3
100 #define MAX_MATCH 258
101 /* The minimum and maximum match lengths */
102
103 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
104
105 /* target dependencies */
106
107 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
108 # define OS_CODE 0x00
109 # ifndef Z_SOLO
110 # if defined(__TURBOC__) || defined(__BORLANDC__)
111 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
112 /* Allow compilation with ANSI keywords only enabled */
113 void _Cdecl farfree( void *block );
114 void *_Cdecl farmalloc( unsigned long nbytes );
115 # else
116 # include <alloc.h>
117 # endif
118 # else /* MSC or DJGPP */
119 # include <malloc.h>
120 # endif
121 # endif
122 #endif
123
124 #ifdef AMIGA
125 # define OS_CODE 0x01
126 #endif
127
128 #if defined(VAXC) || defined(VMS)
129 # define OS_CODE 0x02
130 # define F_OPEN(name, mode) \
131 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
132 #endif
133
134 #if defined(ATARI) || defined(atarist)
135 # define OS_CODE 0x05
136 #endif
137
138 #ifdef OS2
139 # define OS_CODE 0x06
140 # if defined(M_I86) && !defined(Z_SOLO)
141 # include <malloc.h>
142 # endif
143 #endif
144
145 #if defined(MACOS) || defined(TARGET_OS_MAC)
146 # define OS_CODE 0x07
147 # ifndef Z_SOLO
148 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
149 # include <unix.h> /* for fdopen */
150 # else
151 # ifndef fdopen
152 # define fdopen(fd,mode) NULL /* No fdopen() */
153 # endif
154 # endif
155 # endif
156 #endif
157
158 #ifdef TOPS20
159 # define OS_CODE 0x0a
160 #endif
161
162 #ifdef WIN32
163 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
164 # define OS_CODE 0x0b
165 # endif
166 #endif
167
168 #ifdef __50SERIES /* Prime/PRIMOS */
169 # define OS_CODE 0x0f
170 #endif
171
172 #if defined(_BEOS_) || defined(RISCOS)
173 # define fdopen(fd,mode) NULL /* No fdopen() */
174 #endif
175
176 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
177 # if defined(_WIN32_WCE)
178 # define fdopen(fd,mode) NULL /* No fdopen() */
179 # ifndef _PTRDIFF_T_DEFINED
180 typedef int ptrdiff_t;
181 # define _PTRDIFF_T_DEFINED
182 # endif
183 # else
184 # define fdopen(fd,type) _fdopen(fd,type)
185 # endif
186 #endif
187
188 #if defined(__BORLANDC__) && !defined(MSDOS)
189 #pragma warn -8004
190 #pragma warn -8008
191 #pragma warn -8066
192 #endif
193
194 /* provide prototypes for these when building zlib without LFS */
195 #if !defined(_WIN32) && \
196 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
197 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
198 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
199 #endif
200
201 /* common defaults */
202
203 #ifndef OS_CODE
204 # define OS_CODE 0x03 /* assume Unix */
205 #endif
206
207 #ifndef F_OPEN
208 # define F_OPEN(name, mode) fopen((name), (mode))
209 #endif
210
211 /* functions */
212
213 #if defined(pyr) || defined(Z_SOLO)
214 # define NO_MEMCPY
215 #endif
216 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
217 /* Use our own functions for small and medium model with MSC <= 5.0.
218 * You may have to use the same strategy for Borland C (untested).
219 * The __SC__ check is for Symantec.
220 */
221 # define NO_MEMCPY
222 #endif
223 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
224 # define HAVE_MEMCPY
225 #endif
226 #ifdef HAVE_MEMCPY
227 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
228 # define zmemcpy _fmemcpy
229 # define zmemcmp _fmemcmp
230 # define zmemzero(dest, len) _fmemset(dest, 0, len)
231 # else
232 # define zmemcpy memcpy
233 # define zmemcmp memcmp
234 # define zmemzero(dest, len) memset(dest, 0, len)
235 # endif
236 #else
237 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
238 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
239 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
240 #endif
241
242 /* Diagnostic functions */
243 #ifdef DEBUG
244 # include <stdio.h>
245 extern int ZLIB_INTERNAL z_verbose;
246 extern void ZLIB_INTERNAL z_error OF((char *m));
247 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
248 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
249 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
250 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
251 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
252 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
253 #else
254 # define Assert(cond,msg)
255 # define Trace(x)
256 # define Tracev(x)
257 # define Tracevv(x)
258 # define Tracec(c,x)
259 # define Tracecv(c,x)
260 #endif
261
262 #ifndef Z_SOLO
263 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
264 unsigned size));
265 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
266 #endif
267
268 #define ZALLOC(strm, items, size) \
269 (*((strm)->zalloc))((strm)->opaque, (items), (size))
270 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
271 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
272
273 /* Reverse the bytes in a 32-bit value */
274 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
275 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
276
277 #endif /* ZUTIL_H */