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c801d85f | 1 | /* zutil.h -- internal interface and configuration of the compression library |
41faf807 | 2 | * Copyright (C) 1995-2005 Jean-loup Gailly. |
c801d85f KB |
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 | ||
c801d85f | 11 | |
51dbdf87 VS |
12 | #ifndef ZUTIL_H |
13 | #define ZUTIL_H | |
c801d85f | 14 | |
51dbdf87 VS |
15 | #define ZLIB_INTERNAL |
16 | #include "zlib.h" | |
c801d85f KB |
17 | |
18 | #ifdef STDC | |
41faf807 MW |
19 | # ifndef _WIN32_WCE |
20 | # include <stddef.h> | |
21 | # endif | |
c801d85f KB |
22 | # include <string.h> |
23 | # include <stdlib.h> | |
24 | #endif | |
25 | #ifdef NO_ERRNO_H | |
41faf807 MW |
26 | # ifdef _WIN32_WCE |
27 | /* The Microsoft C Run-Time Library for Windows CE doesn't have | |
28 | * errno. We define it as a global variable to simplify porting. | |
29 | * Its value is always 0 and should not be used. We rename it to | |
30 | * avoid conflict with other libraries that use the same workaround. | |
31 | */ | |
32 | # define errno z_errno | |
33 | # endif | |
c801d85f KB |
34 | extern int errno; |
35 | #else | |
41faf807 MW |
36 | # ifndef _WIN32_WCE |
37 | # include <errno.h> | |
38 | # endif | |
c801d85f KB |
39 | #endif |
40 | ||
41 | #ifndef local | |
42 | # define local static | |
43 | #endif | |
3dd4e4e0 | 44 | /* compile with -Dlocal if your debugger can't find static symbols */ |
c801d85f KB |
45 | |
46 | typedef unsigned char uch; | |
47 | typedef uch FAR uchf; | |
48 | typedef unsigned short ush; | |
49 | typedef ush FAR ushf; | |
50 | typedef unsigned long ulg; | |
51 | ||
51dbdf87 | 52 | extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
c801d85f KB |
53 | /* (size given to avoid silly warnings with Visual C++) */ |
54 | ||
55 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] | |
56 | ||
57 | #define ERR_RETURN(strm,err) \ | |
58 | return (strm->msg = (char*)ERR_MSG(err), (err)) | |
59 | /* To be used only when the state is known to be valid */ | |
60 | ||
61 | /* common constants */ | |
62 | ||
63 | #ifndef DEF_WBITS | |
64 | # define DEF_WBITS MAX_WBITS | |
65 | #endif | |
66 | /* default windowBits for decompression. MAX_WBITS is for compression only */ | |
67 | ||
68 | #if MAX_MEM_LEVEL >= 8 | |
69 | # define DEF_MEM_LEVEL 8 | |
70 | #else | |
71 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL | |
72 | #endif | |
73 | /* default memLevel */ | |
74 | ||
75 | #define STORED_BLOCK 0 | |
76 | #define STATIC_TREES 1 | |
77 | #define DYN_TREES 2 | |
78 | /* The three kinds of block type */ | |
79 | ||
80 | #define MIN_MATCH 3 | |
81 | #define MAX_MATCH 258 | |
82 | /* The minimum and maximum match lengths */ | |
83 | ||
84 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ | |
85 | ||
86 | /* target dependencies */ | |
87 | ||
51dbdf87 | 88 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
c801d85f | 89 | # define OS_CODE 0x00 |
51dbdf87 | 90 | # if defined(__TURBOC__) || defined(__BORLANDC__) |
c801d85f KB |
91 | # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
92 | /* Allow compilation with ANSI keywords only enabled */ | |
93 | void _Cdecl farfree( void *block ); | |
94 | void *_Cdecl farmalloc( unsigned long nbytes ); | |
95 | # else | |
51dbdf87 | 96 | # include <alloc.h> |
c801d85f KB |
97 | # endif |
98 | # else /* MSC or DJGPP */ | |
99 | # include <malloc.h> | |
100 | # endif | |
101 | #endif | |
102 | ||
51dbdf87 VS |
103 | #ifdef AMIGA |
104 | # define OS_CODE 0x01 | |
c801d85f KB |
105 | #endif |
106 | ||
107 | #if defined(VAXC) || defined(VMS) | |
108 | # define OS_CODE 0x02 | |
109 | # define F_OPEN(name, mode) \ | |
110 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") | |
111 | #endif | |
112 | ||
c801d85f KB |
113 | #if defined(ATARI) || defined(atarist) |
114 | # define OS_CODE 0x05 | |
115 | #endif | |
116 | ||
51dbdf87 VS |
117 | #ifdef OS2 |
118 | # define OS_CODE 0x06 | |
41faf807 MW |
119 | # ifdef M_I86 |
120 | #include <malloc.h> | |
121 | # endif | |
51dbdf87 VS |
122 | #endif |
123 | ||
c801d85f KB |
124 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
125 | # define OS_CODE 0x07 | |
51dbdf87 VS |
126 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
127 | # include <unix.h> /* for fdopen */ | |
128 | # else | |
129 | # ifndef fdopen | |
130 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
131 | # endif | |
c801d85f KB |
132 | # endif |
133 | #endif | |
51dbdf87 VS |
134 | |
135 | #ifdef TOPS20 | |
136 | # define OS_CODE 0x0a | |
c801d85f KB |
137 | #endif |
138 | ||
51dbdf87 VS |
139 | #ifdef WIN32 |
140 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ | |
141 | # define OS_CODE 0x0b | |
142 | # endif | |
c801d85f KB |
143 | #endif |
144 | ||
51dbdf87 VS |
145 | #ifdef __50SERIES /* Prime/PRIMOS */ |
146 | # define OS_CODE 0x0f | |
c801d85f KB |
147 | #endif |
148 | ||
149 | #if defined(_BEOS_) || defined(RISCOS) | |
150 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
151 | #endif | |
152 | ||
51dbdf87 VS |
153 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) |
154 | # if defined(_WIN32_WCE) | |
155 | # define fdopen(fd,mode) NULL /* No fdopen() */ | |
156 | # ifndef _PTRDIFF_T_DEFINED | |
157 | typedef int ptrdiff_t; | |
158 | # define _PTRDIFF_T_DEFINED | |
159 | # endif | |
160 | # else | |
161 | # define fdopen(fd,type) _fdopen(fd,type) | |
162 | # endif | |
c801d85f KB |
163 | #endif |
164 | ||
51dbdf87 | 165 | /* common defaults */ |
c801d85f KB |
166 | |
167 | #ifndef OS_CODE | |
168 | # define OS_CODE 0x03 /* assume Unix */ | |
169 | #endif | |
170 | ||
171 | #ifndef F_OPEN | |
172 | # define F_OPEN(name, mode) fopen((name), (mode)) | |
173 | #endif | |
174 | ||
175 | /* functions */ | |
176 | ||
51dbdf87 VS |
177 | #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) |
178 | # ifndef HAVE_VSNPRINTF | |
179 | # define HAVE_VSNPRINTF | |
180 | # endif | |
181 | #endif | |
182 | #if defined(__CYGWIN__) | |
183 | # ifndef HAVE_VSNPRINTF | |
184 | # define HAVE_VSNPRINTF | |
185 | # endif | |
186 | #endif | |
187 | #ifndef HAVE_VSNPRINTF | |
188 | # ifdef MSDOS | |
189 | /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), | |
190 | but for now we just assume it doesn't. */ | |
191 | # define NO_vsnprintf | |
192 | # endif | |
193 | # ifdef __TURBOC__ | |
194 | # define NO_vsnprintf | |
195 | # endif | |
196 | # ifdef WIN32 | |
197 | /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ | |
198 | # if !defined(vsnprintf) && !defined(NO_vsnprintf) | |
199 | # define vsnprintf _vsnprintf | |
200 | # endif | |
201 | # endif | |
202 | # ifdef __SASC | |
203 | # define NO_vsnprintf | |
204 | # endif | |
205 | #endif | |
ba0052f3 VS |
206 | #ifdef VMS |
207 | # define NO_vsnprintf | |
208 | #endif | |
51dbdf87 | 209 | |
c801d85f KB |
210 | #if defined(pyr) |
211 | # define NO_MEMCPY | |
212 | #endif | |
213 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) | |
214 | /* Use our own functions for small and medium model with MSC <= 5.0. | |
215 | * You may have to use the same strategy for Borland C (untested). | |
216 | * The __SC__ check is for Symantec. | |
217 | */ | |
218 | # define NO_MEMCPY | |
219 | #endif | |
220 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) | |
221 | # define HAVE_MEMCPY | |
222 | #endif | |
223 | #ifdef HAVE_MEMCPY | |
224 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ | |
225 | # define zmemcpy _fmemcpy | |
226 | # define zmemcmp _fmemcmp | |
227 | # define zmemzero(dest, len) _fmemset(dest, 0, len) | |
228 | # else | |
229 | # define zmemcpy memcpy | |
230 | # define zmemcmp memcmp | |
231 | # define zmemzero(dest, len) memset(dest, 0, len) | |
232 | # endif | |
233 | #else | |
51dbdf87 VS |
234 | extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
235 | extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); | |
c801d85f KB |
236 | extern void zmemzero OF((Bytef* dest, uInt len)); |
237 | #endif | |
238 | ||
239 | /* Diagnostic functions */ | |
51dbdf87 | 240 | #ifdef DEBUG |
c801d85f KB |
241 | # include <stdio.h> |
242 | extern int z_verbose; | |
243 | extern void z_error OF((char *m)); | |
244 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} | |
245 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} | |
246 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} | |
247 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} | |
248 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} | |
249 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} | |
250 | #else | |
251 | # define Assert(cond,msg) | |
252 | # define Trace(x) | |
253 | # define Tracev(x) | |
254 | # define Tracevv(x) | |
255 | # define Tracec(c,x) | |
256 | # define Tracecv(c,x) | |
257 | #endif | |
258 | ||
259 | ||
c801d85f KB |
260 | voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); |
261 | void zcfree OF((voidpf opaque, voidpf ptr)); | |
262 | ||
263 | #define ZALLOC(strm, items, size) \ | |
264 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) | |
265 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) | |
266 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} | |
267 | ||
51dbdf87 | 268 | #endif /* ZUTIL_H */ |