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,v 1.3 2002/03/16 18:22:46 henry Exp $ */
18 #include <linux/string.h>
37 /* compile with -Dlocal if your debugger can't find static symbols */
39 typedef unsigned char uch;
41 typedef unsigned short ush;
43 typedef unsigned long ulg;
45 extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
46 /* (size given to avoid silly warnings with Visual C++) */
48 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
50 #define ERR_RETURN(strm,err) \
51 return (strm->msg = ERR_MSG(err), (err))
52 /* To be used only when the state is known to be valid */
54 /* common constants */
57 # define DEF_WBITS MAX_WBITS
59 /* default windowBits for decompression. MAX_WBITS is for compression only */
61 #if MAX_MEM_LEVEL >= 8
62 # define DEF_MEM_LEVEL 8
64 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
66 /* default memLevel */
68 #define STORED_BLOCK 0
69 #define STATIC_TREES 1
71 /* The three kinds of block type */
75 /* The minimum and maximum match lengths */
77 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
79 /* target dependencies */
83 # if defined(__TURBOC__) || defined(__BORLANDC__)
84 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
85 /* Allow compilation with ANSI keywords only enabled */
86 void _Cdecl farfree( void *block );
87 void *_Cdecl farmalloc( unsigned long nbytes );
91 # else /* MSC or DJGPP */
100 #ifdef WIN32 /* Window 95 & Windows NT */
101 # define OS_CODE 0x0b
104 #if defined(VAXC) || defined(VMS)
105 # define OS_CODE 0x02
106 # define F_OPEN(name, mode) \
107 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
111 # define OS_CODE 0x01
114 #if defined(ATARI) || defined(atarist)
115 # define OS_CODE 0x05
118 #if defined(MACOS) || defined(TARGET_OS_MAC)
119 # define OS_CODE 0x07
120 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
121 # include <unix.h> /* for fdopen */
124 # define fdopen(fd,mode) NULL /* No fdopen() */
129 #ifdef __50SERIES /* Prime/PRIMOS */
130 # define OS_CODE 0x0F
134 # define OS_CODE 0x0a
137 #if defined(_BEOS_) || defined(RISCOS)
138 # define fdopen(fd,mode) NULL /* No fdopen() */
141 #if (defined(_MSC_VER) && (_MSC_VER > 600))
142 # define fdopen(fd,type) _fdopen(fd,type)
146 /* Common defaults */
149 # define OS_CODE 0x03 /* assume Unix */
153 # define F_OPEN(name, mode) fopen((name), (mode))
159 extern char *strerror OF((int));
160 # define zstrerror(errnum) strerror(errnum)
162 # define zstrerror(errnum) ""
168 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
169 /* Use our own functions for small and medium model with MSC <= 5.0.
170 * You may have to use the same strategy for Borland C (untested).
171 * The __SC__ check is for Symantec.
175 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
179 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
180 # define zmemcpy _fmemcpy
181 # define zmemcmp _fmemcmp
182 # define zmemzero(dest, len) _fmemset(dest, 0, len)
184 # define zmemcpy memcpy
185 # define zmemcmp memcmp
186 # define zmemzero(dest, len) memset(dest, 0, len)
189 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
190 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
191 extern void zmemzero OF((Bytef* dest, uInt len));
194 /* Diagnostic functions */
197 extern int z_verbose;
198 extern void z_error OF((char *m));
199 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
200 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
201 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
202 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
203 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
204 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
206 # define Assert(cond,msg)
211 # define Tracecv(c,x)
215 typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,
217 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
218 void zcfree OF((voidpf opaque, voidpf ptr));
220 #define ZALLOC(strm, items, size) \
221 (*((strm)->zalloc))((strm)->opaque, (items), (size))
222 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
223 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
225 #endif /* _Z_UTIL_H */