1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2002 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.
11 /* @(#) $Id: zutil.h 119 2004-10-05 20:38:42Z oyvind $ */
32 /* compile with -Dlocal if your debugger can't find static symbols */
34 typedef unsigned char uch
;
36 typedef unsigned short ush
;
38 typedef unsigned long ulg
;
40 extern const char *z_errmsg
[10]; /* indexed by 2-zlib_error */
41 /* (size given to avoid silly warnings with Visual C++) */
43 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
45 #define ERR_RETURN(strm,err) \
46 return (strm->msg = (char*)ERR_MSG(err), (err))
47 /* To be used only when the state is known to be valid */
49 /* common constants */
52 # define DEF_WBITS MAX_WBITS
54 /* default windowBits for decompression. MAX_WBITS is for compression only */
56 #if MAX_MEM_LEVEL >= 8
57 # define DEF_MEM_LEVEL 8
59 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
61 /* default memLevel */
63 #define STORED_BLOCK 0
64 #define STATIC_TREES 1
66 /* The three kinds of block type */
70 /* The minimum and maximum match lengths */
72 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
74 /* target dependencies */
78 # if defined(__TURBOC__) || defined(__BORLANDC__)
79 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
80 /* Allow compilation with ANSI keywords only enabled */
81 void _Cdecl
farfree( void *block
);
82 void *_Cdecl
farmalloc( unsigned long nbytes
);
86 # else /* MSC or DJGPP */
95 #ifdef WIN32 /* Window 95 & Windows NT */
99 #if defined(VAXC) || defined(VMS)
100 # define OS_CODE 0x02
101 # define F_OPEN(name, mode) \
102 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
106 # define OS_CODE 0x01
109 #if defined(ATARI) || defined(atarist)
110 # define OS_CODE 0x05
113 #if defined(MACOS) || defined(TARGET_OS_MAC)
114 # define OS_CODE 0x07
115 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
116 # include <unix.h> /* for fdopen */
119 # define fdopen(fd,mode) NULL /* No fdopen() */
124 #ifdef __50SERIES /* Prime/PRIMOS */
125 # define OS_CODE 0x0F
129 # define OS_CODE 0x0a
132 #if defined(_BEOS_) || defined(RISCOS)
133 # define fdopen(fd,mode) NULL /* No fdopen() */
136 #if (defined(_MSC_VER) && (_MSC_VER > 600))
137 # define fdopen(fd,type) _fdopen(fd,type)
141 /* Common defaults */
144 # define OS_CODE 0x03 /* assume Unix */
148 # define F_OPEN(name, mode) fopen((name), (mode))
154 extern char *strerror
OF((int));
155 # define zstrerror(errnum) strerror(errnum)
157 # define zstrerror(errnum) ""
163 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
164 /* Use our own functions for small and medium model with MSC <= 5.0.
165 * You may have to use the same strategy for Borland C (untested).
166 * The __SC__ check is for Symantec.
170 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
174 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
175 # define zmemcpy _fmemcpy
176 # define zmemcmp _fmemcmp
177 # define zmemzero(dest, len) _fmemset(dest, 0, len)
179 # define zmemcpy memcpy
180 # define zmemcmp memcmp
181 # define zmemzero(dest, len) memset(dest, 0, len)
184 extern void zmemcpy
OF((Bytef
* dest
, const Bytef
* source
, uInt len
));
185 extern int zmemcmp
OF((const Bytef
* s1
, const Bytef
* s2
, uInt len
));
186 extern void zmemzero
OF((Bytef
* dest
, uInt len
));
189 /* Diagnostic functions */
192 extern int z_verbose
;
193 extern void z_error
OF((char *m
));
194 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
195 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
196 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
197 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
198 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
199 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
201 # define Assert(cond,msg)
206 # define Tracecv(c,x)
210 typedef uLong (ZEXPORT
*check_func
) OF((uLong check
, const Bytef
*buf
,
212 voidpf zcalloc
OF((voidpf opaque
, unsigned items
, unsigned size
));
213 void zcfree
OF((voidpf opaque
, voidpf ptr
));
215 #define ZALLOC(strm, items, size) \
216 (*((strm)->zalloc))((strm)->opaque, (items), (size))
217 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
218 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
220 #endif /* _Z_UTIL_H */