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.
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;
41 #define ERR_RETURN(strm,err) \
42 return (strm->msg = (char*)ERR_MSG(err), (err))
43 /* To be used only when the state is known to be valid */
45 /* common constants */
48 # define DEF_WBITS MAX_WBITS
50 /* default windowBits for decompression. MAX_WBITS is for compression only */
52 #if MAX_MEM_LEVEL >= 8
53 # define DEF_MEM_LEVEL 8
55 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
57 /* default memLevel */
59 #define STORED_BLOCK 0
60 #define STATIC_TREES 1
62 /* The three kinds of block type */
66 /* The minimum and maximum match lengths */
68 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
70 /* target dependencies */
74 # if defined(__TURBOC__) || defined(__BORLANDC__)
75 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
76 /* Allow compilation with ANSI keywords only enabled */
77 void _Cdecl farfree( void *block );
78 void *_Cdecl farmalloc( unsigned long nbytes );
82 # else /* MSC or DJGPP */
91 #ifdef WIN32 /* Window 95 & Windows NT */
95 #if defined(VAXC) || defined(VMS)
97 # define F_OPEN(name, mode) \
98 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
102 # define OS_CODE 0x01
105 #if defined(ATARI) || defined(atarist)
106 # define OS_CODE 0x05
109 #if defined(MACOS) || defined(TARGET_OS_MAC)
110 # define OS_CODE 0x07
111 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
112 # include <unix.h> /* for fdopen */
115 # define fdopen(fd,mode) NULL /* No fdopen() */
120 #ifdef __50SERIES /* Prime/PRIMOS */
121 # define OS_CODE 0x0F
125 # define OS_CODE 0x0a
128 #if defined(_BEOS_) || defined(RISCOS)
129 # define fdopen(fd,mode) NULL /* No fdopen() */
132 #if (defined(_MSC_VER) && (_MSC_VER > 600))
133 # define fdopen(fd,type) _fdopen(fd,type)
137 /* Common defaults */
140 # define OS_CODE 0x03 /* assume Unix */
144 # define F_OPEN(name, mode) fopen((name), (mode))
150 extern char *strerror OF((int));
151 # define zstrerror(errnum) strerror(errnum)
153 # define zstrerror(errnum) ""
159 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
160 /* Use our own functions for small and medium model with MSC <= 5.0.
161 * You may have to use the same strategy for Borland C (untested).
162 * The __SC__ check is for Symantec.
166 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
170 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
171 # define zmemcpy _fmemcpy
172 # define zmemcmp _fmemcmp
173 # define zmemzero(dest, len) _fmemset(dest, 0, len)
175 # define zmemcpy ft_memcpy
176 # define zmemcmp memcmp
177 # define zmemzero(dest, len) memset(dest, 0, len)
180 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
181 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
182 extern void zmemzero OF((Bytef* dest, uInt len));
185 /* Diagnostic functions */
188 extern int z_verbose;
189 extern void z_error OF((char *m));
190 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
191 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
192 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
193 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
194 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
195 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
197 # define Assert(cond,msg)
202 # define Tracecv(c,x)
206 typedef uLong (*check_func) OF((uLong check, const Bytef *buf,
208 local voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
209 local void zcfree OF((voidpf opaque, voidpf ptr));
211 #define ZALLOC(strm, items, size) \
212 (*((strm)->zalloc))((strm)->opaque, (items), (size))
213 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
214 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
216 #endif /* _Z_UTIL_H */