e6153040 |
1 | /* zutil.h -- internal interface and configuration of the compression library |
2 | * Copyright (C) 1995-2013 Jean-loup Gailly. |
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 | |
32 | #ifdef Z_SOLO |
33 | typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ |
34 | #endif |
35 | |
36 | #ifndef local |
37 | # define local static |
38 | #endif |
39 | /* compile with -Dlocal if your debugger can't find static symbols */ |
40 | |
41 | typedef unsigned char uch; |
42 | typedef uch FAR uchf; |
43 | typedef unsigned short ush; |
44 | typedef ush FAR ushf; |
45 | typedef unsigned long ulg; |
46 | |
47 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
48 | /* (size given to avoid silly warnings with Visual C++) */ |
49 | |
50 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
51 | |
52 | #define ERR_RETURN(strm,err) \ |
53 | return (strm->msg = ERR_MSG(err), (err)) |
54 | /* To be used only when the state is known to be valid */ |
55 | |
56 | /* common constants */ |
57 | |
58 | #ifndef DEF_WBITS |
59 | # define DEF_WBITS MAX_WBITS |
60 | #endif |
61 | /* default windowBits for decompression. MAX_WBITS is for compression only */ |
62 | |
63 | #if MAX_MEM_LEVEL >= 8 |
64 | # define DEF_MEM_LEVEL 8 |
65 | #else |
66 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
67 | #endif |
68 | /* default memLevel */ |
69 | |
70 | #define STORED_BLOCK 0 |
71 | #define STATIC_TREES 1 |
72 | #define DYN_TREES 2 |
73 | /* The three kinds of block type */ |
74 | |
75 | #define MIN_MATCH 3 |
76 | #define MAX_MATCH 258 |
77 | /* The minimum and maximum match lengths */ |
78 | |
79 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
80 | |
81 | /* target dependencies */ |
82 | |
83 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
84 | # define OS_CODE 0x00 |
85 | # ifndef Z_SOLO |
86 | # if defined(__TURBOC__) || defined(__BORLANDC__) |
87 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
88 | /* Allow compilation with ANSI keywords only enabled */ |
89 | void _Cdecl farfree( void *block ); |
90 | void *_Cdecl farmalloc( unsigned long nbytes ); |
91 | # else |
92 | # include <alloc.h> |
93 | # endif |
94 | # else /* MSC or DJGPP */ |
95 | # include <malloc.h> |
96 | # endif |
97 | # endif |
98 | #endif |
99 | |
100 | #ifdef AMIGA |
101 | # define OS_CODE 0x01 |
102 | #endif |
103 | |
104 | #if defined(VAXC) || defined(VMS) |
105 | # define OS_CODE 0x02 |
106 | # define F_OPEN(name, mode) \ |
107 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
108 | #endif |
109 | |
110 | #if defined(ATARI) || defined(atarist) |
111 | # define OS_CODE 0x05 |
112 | #endif |
113 | |
114 | #ifdef OS2 |
115 | # define OS_CODE 0x06 |
116 | # if defined(M_I86) && !defined(Z_SOLO) |
117 | # include <malloc.h> |
118 | # endif |
119 | #endif |
120 | |
121 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
122 | # define OS_CODE 0x07 |
123 | # ifndef Z_SOLO |
124 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
125 | # include <unix.h> /* for fdopen */ |
126 | # else |
127 | # ifndef fdopen |
128 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
129 | # endif |
130 | # endif |
131 | # endif |
132 | #endif |
133 | |
134 | #ifdef TOPS20 |
135 | # define OS_CODE 0x0a |
136 | #endif |
137 | |
138 | #ifdef WIN32 |
139 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ |
140 | # define OS_CODE 0x0b |
141 | # endif |
142 | #endif |
143 | |
144 | #ifdef __50SERIES /* Prime/PRIMOS */ |
145 | # define OS_CODE 0x0f |
146 | #endif |
147 | |
148 | #if defined(_BEOS_) || defined(RISCOS) |
149 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
150 | #endif |
151 | |
152 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX |
153 | # if defined(_WIN32_WCE) |
154 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
155 | # ifndef _PTRDIFF_T_DEFINED |
156 | typedef int ptrdiff_t; |
157 | # define _PTRDIFF_T_DEFINED |
158 | # endif |
159 | # else |
160 | # define fdopen(fd,type) _fdopen(fd,type) |
161 | # endif |
162 | #endif |
163 | |
164 | #if defined(__BORLANDC__) && !defined(MSDOS) |
165 | #pragma warn -8004 |
166 | #pragma warn -8008 |
167 | #pragma warn -8066 |
168 | #endif |
169 | |
170 | /* provide prototypes for these when building zlib without LFS */ |
171 | #if !defined(_WIN32) && \ |
172 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) |
173 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); |
174 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); |
175 | #endif |
176 | |
177 | /* common defaults */ |
178 | |
179 | #ifndef OS_CODE |
180 | # define OS_CODE 0x03 /* assume Unix */ |
181 | #endif |
182 | |
183 | #ifndef F_OPEN |
184 | # define F_OPEN(name, mode) fopen((name), (mode)) |
185 | #endif |
186 | |
187 | /* functions */ |
188 | |
189 | #if defined(pyr) || defined(Z_SOLO) |
190 | # define NO_MEMCPY |
191 | #endif |
192 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
193 | /* Use our own functions for small and medium model with MSC <= 5.0. |
194 | * You may have to use the same strategy for Borland C (untested). |
195 | * The __SC__ check is for Symantec. |
196 | */ |
197 | # define NO_MEMCPY |
198 | #endif |
199 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
200 | # define HAVE_MEMCPY |
201 | #endif |
202 | #ifdef HAVE_MEMCPY |
203 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
204 | # define zmemcpy _fmemcpy |
205 | # define zmemcmp _fmemcmp |
206 | # define zmemzero(dest, len) _fmemset(dest, 0, len) |
207 | # else |
208 | # define zmemcpy memcpy |
209 | # define zmemcmp memcmp |
210 | # define zmemzero(dest, len) memset(dest, 0, len) |
211 | # endif |
212 | #else |
213 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
214 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
215 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); |
216 | #endif |
217 | |
218 | /* Diagnostic functions */ |
219 | #ifdef DEBUG |
220 | # include <stdio.h> |
221 | extern int ZLIB_INTERNAL z_verbose; |
222 | extern void ZLIB_INTERNAL z_error OF((char *m)); |
223 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
224 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} |
225 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} |
226 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
227 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
228 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
229 | #else |
230 | # define Assert(cond,msg) |
231 | # define Trace(x) |
232 | # define Tracev(x) |
233 | # define Tracevv(x) |
234 | # define Tracec(c,x) |
235 | # define Tracecv(c,x) |
236 | #endif |
237 | |
238 | #ifndef Z_SOLO |
239 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, |
240 | unsigned size)); |
241 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); |
242 | #endif |
243 | |
244 | #define ZALLOC(strm, items, size) \ |
245 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) |
246 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
247 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
248 | |
249 | /* Reverse the bytes in a 32-bit value */ |
250 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ |
251 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) |
252 | |
253 | #endif /* ZUTIL_H */ |