2 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
6 /* zutil.h -- internal interface and configuration of the compression library
7 * Copyright (C) 1995-2005 Jean-loup Gailly.
8 * For conditions of distribution and use, see copyright notice in zlib.h
11 /* WARNING: this file should *not* be used by applications. It is
12 part of the implementation of the compression library and is
13 subject to change. Applications should only use zlib.h.
19 #pragma ident "%Z%%M% %I% %E% SMI"
33 /* The Microsoft C Run-Time Library for Windows CE doesn't have
34 * errno. We define it as a global variable to simplify porting.
35 * Its value is always 0 and should not be used. We rename it to
36 * avoid conflict with other libraries that use the same workaround.
38 # define errno z_errno
43 # include <sys/errno.h>
50 /* compile with -Dlocal if your debugger can't find static symbols */
52 typedef unsigned char uch;
54 typedef unsigned short ush;
56 typedef unsigned long ulg;
58 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
59 /* (size given to avoid silly warnings with Visual C++) */
61 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
63 #define ERR_RETURN(strm,err) \
64 return (strm->msg = (char*)ERR_MSG(err), (err))
65 /* To be used only when the state is known to be valid */
67 /* common constants */
70 # define DEF_WBITS MAX_WBITS
72 /* default windowBits for decompression. MAX_WBITS is for compression only */
74 #if MAX_MEM_LEVEL >= 8
75 # define DEF_MEM_LEVEL 8
77 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
79 /* default memLevel */
81 #define STORED_BLOCK 0
82 #define STATIC_TREES 1
84 /* The three kinds of block type */
88 /* The minimum and maximum match lengths */
90 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
92 /* target dependencies */
94 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
96 # if defined(__TURBOC__) || defined(__BORLANDC__)
97 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
98 /* Allow compilation with ANSI keywords only enabled */
99 void _Cdecl farfree( void *block );
100 void *_Cdecl farmalloc( unsigned long nbytes );
104 # else /* MSC or DJGPP */
110 # define OS_CODE 0x01
113 #if defined(VAXC) || defined(VMS)
114 # define OS_CODE 0x02
115 # define F_OPEN(name, mode) \
116 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
119 #if defined(ATARI) || defined(atarist)
120 # define OS_CODE 0x05
124 # define OS_CODE 0x06
130 #if defined(MACOS) || defined(TARGET_OS_MAC)
131 # define OS_CODE 0x07
132 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
133 # include <unix.h> /* for fdopen */
136 # define fdopen(fd,mode) NULL /* No fdopen() */
142 # define OS_CODE 0x0a
146 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
147 # define OS_CODE 0x0b
151 #ifdef __50SERIES /* Prime/PRIMOS */
152 # define OS_CODE 0x0f
155 #if defined(_BEOS_) || defined(RISCOS)
156 # define fdopen(fd,mode) NULL /* No fdopen() */
159 #if (defined(_MSC_VER) && (_MSC_VER > 600))
160 # if defined(_WIN32_WCE)
161 # define fdopen(fd,mode) NULL /* No fdopen() */
162 # ifndef _PTRDIFF_T_DEFINED
163 typedef int ptrdiff_t;
164 # define _PTRDIFF_T_DEFINED
167 # define fdopen(fd,type) _fdopen(fd,type)
171 /* common defaults */
174 # define OS_CODE 0x03 /* assume Unix */
178 # define F_OPEN(name, mode) fopen((name), (mode))
183 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
184 # ifndef HAVE_VSNPRINTF
185 # define HAVE_VSNPRINTF
188 #if defined(__CYGWIN__)
189 # ifndef HAVE_VSNPRINTF
190 # define HAVE_VSNPRINTF
193 #ifndef HAVE_VSNPRINTF
195 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
196 but for now we just assume it doesn't. */
197 # define NO_vsnprintf
200 # define NO_vsnprintf
203 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
204 # if !defined(vsnprintf) && !defined(NO_vsnprintf)
205 # define vsnprintf _vsnprintf
209 # define NO_vsnprintf
213 # define NO_vsnprintf
219 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
220 /* Use our own functions for small and medium model with MSC <= 5.0.
221 * You may have to use the same strategy for Borland C (untested).
222 * The __SC__ check is for Symantec.
226 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
230 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
231 # define zmemcpy _fmemcpy
232 # define zmemcmp _fmemcmp
233 # define zmemzero(dest, len) _fmemset(dest, 0, len)
235 # define zmemcpy memcpy
236 # define zmemcmp memcmp
237 # define zmemzero(dest, len) memset(dest, 0, len)
240 extern void zmemcpy OF((void* dest, const void* source, uInt len));
241 extern int zmemcmp OF((const void* s1, const void* s2, uInt len));
242 extern void zmemzero OF((void* dest, uInt len));
245 /* Diagnostic functions */
248 extern int z_verbose;
249 extern void z_error OF((char *m));
250 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
251 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
252 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
253 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
254 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
255 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
257 # define Assert(cond,msg)
262 # define Tracecv(c,x)
266 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
267 void zcfree OF((voidpf opaque, voidpf ptr));
269 #define ZALLOC(strm, items, size) \
270 (*((strm)->zalloc))((strm)->opaque, (items), (size))
271 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
272 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
274 #endif /* _ZUTIL_H */