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 /* @(#) $FreeBSD: src/lib/libz/zutil.h,v 1.5.2.1 2003/02/01 13:33:12 sobomax Exp $ */
12 /* @(#) $DragonFly: src/lib/libz/Attic/zutil.h,v 1.2 2003/06/17 04:26:52 dillon Exp $ */
33 /* compile with -Dlocal if your debugger can't find static symbols */
35 typedef unsigned char uch;
37 typedef unsigned short ush;
39 typedef unsigned long ulg;
41 extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
42 /* (size given to avoid silly warnings with Visual C++) */
44 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
46 #define ERR_RETURN(strm,err) \
47 return (strm->msg = (char*)ERR_MSG(err), (err))
48 /* To be used only when the state is known to be valid */
50 /* common constants */
53 # define DEF_WBITS MAX_WBITS
55 /* default windowBits for decompression. MAX_WBITS is for compression only */
57 #if MAX_MEM_LEVEL >= 8
58 # define DEF_MEM_LEVEL 8
60 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
62 /* default memLevel */
64 #define STORED_BLOCK 0
65 #define STATIC_TREES 1
67 /* The three kinds of block type */
71 /* The minimum and maximum match lengths */
73 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
75 /* target dependencies */
79 # if defined(__TURBOC__) || defined(__BORLANDC__)
80 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
81 /* Allow compilation with ANSI keywords only enabled */
82 void _Cdecl farfree( void *block );
83 void *_Cdecl farmalloc( unsigned long nbytes );
87 # else /* MSC or DJGPP */
96 #ifdef WIN32 /* Window 95 & Windows NT */
100 #if defined(VAXC) || defined(VMS)
101 # define OS_CODE 0x02
102 # define F_OPEN(name, mode) \
103 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
107 # define OS_CODE 0x01
110 #if defined(ATARI) || defined(atarist)
111 # define OS_CODE 0x05
114 #if defined(MACOS) || defined(TARGET_OS_MAC)
115 # define OS_CODE 0x07
116 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
117 # include <unix.h> /* for fdopen */
120 # define fdopen(fd,mode) NULL /* No fdopen() */
125 #ifdef __50SERIES /* Prime/PRIMOS */
126 # define OS_CODE 0x0F
130 # define OS_CODE 0x0a
133 #if defined(_BEOS_) || defined(RISCOS)
134 # define fdopen(fd,mode) NULL /* No fdopen() */
137 #if (defined(_MSC_VER) && (_MSC_VER > 600))
138 # define fdopen(fd,type) _fdopen(fd,type)
142 /* Common defaults */
145 # define OS_CODE 0x03 /* assume Unix */
149 # define F_OPEN(name, mode) fopen((name), (mode))
155 extern char *strerror OF((int));
156 # define zstrerror(errnum) strerror(errnum)
158 # define zstrerror(errnum) ""
164 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
165 /* Use our own functions for small and medium model with MSC <= 5.0.
166 * You may have to use the same strategy for Borland C (untested).
167 * The __SC__ check is for Symantec.
171 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
175 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
176 # define zmemcpy _fmemcpy
177 # define zmemcmp _fmemcmp
178 # define zmemzero(dest, len) _fmemset(dest, 0, len)
180 # define zmemcpy memcpy
181 # define zmemcmp memcmp
182 # define zmemzero(dest, len) memset(dest, 0, len)
185 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
186 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
187 extern void zmemzero OF((Bytef* dest, uInt len));
190 /* Diagnostic functions */
193 extern int z_verbose;
194 extern void z_error OF((char *m));
195 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
196 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
197 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
198 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
199 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
200 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
202 # define Assert(cond,msg)
207 # define Tracecv(c,x)
211 typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,
213 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
214 void zcfree OF((voidpf opaque, voidpf ptr));
216 #define ZALLOC(strm, items, size) \
217 (*((strm)->zalloc))((strm)->opaque, (items), (size))
218 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
219 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
221 #endif /* _Z_UTIL_H */