1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2010 Jean-loup Gailly.
3 * For conditions of distribution and use, see copyright notice in zlib.h
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.
20 # if !(defined(_WIN32_WCE) && defined(_MSC_VER))
30 /* compile with -Dlocal if your debugger can't find static symbols */
32 typedef unsigned char uch;
34 typedef unsigned short ush;
36 typedef unsigned long ulg;
38 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
39 /* (size given to avoid silly warnings with Visual C++) */
41 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
43 #define ERR_RETURN(strm,err) \
44 return (strm->msg = (char*)ERR_MSG(err), (err))
45 /* To be used only when the state is known to be valid */
47 /* common constants */
50 # define DEF_WBITS MAX_WBITS
52 /* default windowBits for decompression. MAX_WBITS is for compression only */
54 #if MAX_MEM_LEVEL >= 8
55 # define DEF_MEM_LEVEL 8
57 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
59 /* default memLevel */
61 #define STORED_BLOCK 0
62 #define STATIC_TREES 1
64 /* The three kinds of block type */
68 /* The minimum and maximum match lengths */
70 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
72 /* target dependencies */
74 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
76 # if defined(__TURBOC__) || defined(__BORLANDC__)
77 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
78 /* Allow compilation with ANSI keywords only enabled */
79 void _Cdecl farfree( void *block );
80 void *_Cdecl farmalloc( unsigned long nbytes );
84 # else /* MSC or DJGPP */
93 #if defined(VAXC) || defined(VMS)
95 # define F_OPEN(name, mode) \
96 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
99 #if defined(ATARI) || defined(atarist)
100 # define OS_CODE 0x05
104 # define OS_CODE 0x06
110 #if defined(MACOS) || defined(TARGET_OS_MAC)
111 # define OS_CODE 0x07
112 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
113 # include <unix.h> /* for fdopen */
116 # define fdopen(fd,mode) NULL /* No fdopen() */
122 # define OS_CODE 0x0a
126 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
127 # define OS_CODE 0x0b
131 #ifdef __50SERIES /* Prime/PRIMOS */
132 # define OS_CODE 0x0f
135 #if defined(_BEOS_) || defined(RISCOS)
136 # define fdopen(fd,mode) NULL /* No fdopen() */
139 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
140 # if defined(_WIN32_WCE)
141 # define fdopen(fd,mode) NULL /* No fdopen() */
142 # ifndef _PTRDIFF_T_DEFINED
143 typedef int ptrdiff_t;
144 # define _PTRDIFF_T_DEFINED
147 # define fdopen(fd,type) _fdopen(fd,type)
151 #if defined(__BORLANDC__)
157 #if _LARGEFILE64_SOURCE == 1 && _LFS64_LARGEFILE == 1
158 # define z_off64_t off64_t
160 # define z_off64_t z_off_t
163 /* provide prototypes for these when building zlib without LFS */
164 #if _LARGEFILE64_SOURCE != 1 || _LFS64_LARGEFILE != 1
165 ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
166 ZEXTERN off_t ZEXPORT gzseek64 OF((gzFile, off_t, int));
167 ZEXTERN off_t ZEXPORT gztell64 OF((gzFile));
168 ZEXTERN off_t ZEXPORT gzoffset64 OF((gzFile));
169 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, off_t));
170 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, off_t));
173 /* common defaults */
176 # define OS_CODE 0x03 /* assume Unix */
180 # define F_OPEN(name, mode) fopen((name), (mode))
185 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
186 # ifndef HAVE_VSNPRINTF
187 # define HAVE_VSNPRINTF
190 #if defined(__CYGWIN__)
191 # ifndef HAVE_VSNPRINTF
192 # define HAVE_VSNPRINTF
195 #ifndef HAVE_VSNPRINTF
197 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
198 but for now we just assume it doesn't. */
199 # define NO_vsnprintf
202 # define NO_vsnprintf
205 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
206 # if !defined(vsnprintf) && !defined(NO_vsnprintf)
207 # if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
208 # define vsnprintf _vsnprintf
213 # define NO_vsnprintf
217 # define NO_vsnprintf
223 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
224 /* Use our own functions for small and medium model with MSC <= 5.0.
225 * You may have to use the same strategy for Borland C (untested).
226 * The __SC__ check is for Symantec.
230 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
234 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
235 # define zmemcpy _fmemcpy
236 # define zmemcmp _fmemcmp
237 # define zmemzero(dest, len) _fmemset(dest, 0, len)
239 # define zmemcpy memcpy
240 # define zmemcmp memcmp
241 # define zmemzero(dest, len) memset(dest, 0, len)
244 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
245 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
246 extern void zmemzero OF((Bytef* dest, uInt len));
249 /* Diagnostic functions */
252 extern int z_verbose;
253 extern void z_error OF((char *m));
254 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
255 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
256 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
257 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
258 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
259 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
261 # define Assert(cond,msg)
266 # define Tracecv(c,x)
270 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
271 void zcfree OF((voidpf opaque, voidpf ptr));
273 #define ZALLOC(strm, items, size) \
274 (*((strm)->zalloc))((strm)->opaque, (items), (size))
275 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
276 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}