1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2005 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: ./src/external/zlib-1.2.3/zutil.h, 2011/09/08 dcid Exp $
29 /* The Microsoft C Run-Time Library for Windows CE doesn't have
30 * errno. We define it as a global variable to simplify porting.
31 * Its value is always 0 and should not be used. We rename it to
32 * avoid conflict with other libraries that use the same workaround.
34 # define errno z_errno
46 /* compile with -Dlocal if your debugger can't find static symbols */
48 typedef unsigned char uch;
50 typedef unsigned short ush;
52 typedef unsigned long ulg;
54 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
55 /* (size given to avoid silly warnings with Visual C++) */
57 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
59 #define ERR_RETURN(strm,err) \
60 return (strm->msg = (char*)ERR_MSG(err), (err))
61 /* To be used only when the state is known to be valid */
63 /* common constants */
66 # define DEF_WBITS MAX_WBITS
68 /* default windowBits for decompression. MAX_WBITS is for compression only */
70 #if MAX_MEM_LEVEL >= 8
71 # define DEF_MEM_LEVEL 8
73 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
75 /* default memLevel */
77 #define STORED_BLOCK 0
78 #define STATIC_TREES 1
80 /* The three kinds of block type */
84 /* The minimum and maximum match lengths */
86 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
88 /* target dependencies */
90 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
92 # if defined(__TURBOC__) || defined(__BORLANDC__)
93 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
94 /* Allow compilation with ANSI keywords only enabled */
95 void _Cdecl farfree( void *block );
96 void *_Cdecl farmalloc( unsigned long nbytes );
100 # else /* MSC or DJGPP */
106 # define OS_CODE 0x01
109 #if defined(VAXC) || defined(VMS)
110 # define OS_CODE 0x02
111 # define F_OPEN(name, mode) \
112 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
115 #if defined(ATARI) || defined(atarist)
116 # define OS_CODE 0x05
120 # define OS_CODE 0x06
126 #if defined(MACOS) || defined(TARGET_OS_MAC)
127 # define OS_CODE 0x07
128 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
129 # include <unix.h> /* for fdopen */
132 # define fdopen(fd,mode) NULL /* No fdopen() */
138 # define OS_CODE 0x0a
142 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
143 # define OS_CODE 0x0b
147 #ifdef __50SERIES /* Prime/PRIMOS */
148 # define OS_CODE 0x0f
151 #if defined(_BEOS_) || defined(RISCOS)
152 # define fdopen(fd,mode) NULL /* No fdopen() */
155 #if (defined(_MSC_VER) && (_MSC_VER > 600))
156 # if defined(_WIN32_WCE)
157 # define fdopen(fd,mode) NULL /* No fdopen() */
158 # ifndef _PTRDIFF_T_DEFINED
159 typedef int ptrdiff_t;
160 # define _PTRDIFF_T_DEFINED
163 # define fdopen(fd,type) _fdopen(fd,type)
167 /* common defaults */
170 # define OS_CODE 0x03 /* assume Unix */
174 # define F_OPEN(name, mode) fopen((name), (mode))
179 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
180 # ifndef HAVE_VSNPRINTF
181 # define HAVE_VSNPRINTF
184 #if defined(__CYGWIN__)
185 # ifndef HAVE_VSNPRINTF
186 # define HAVE_VSNPRINTF
189 #ifndef HAVE_VSNPRINTF
191 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
192 but for now we just assume it doesn't. */
193 # define NO_vsnprintf
196 # define NO_vsnprintf
199 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
200 # if !defined(vsnprintf) && !defined(NO_vsnprintf)
201 # define vsnprintf _vsnprintf
205 # define NO_vsnprintf
209 # define NO_vsnprintf
215 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
216 /* Use our own functions for small and medium model with MSC <= 5.0.
217 * You may have to use the same strategy for Borland C (untested).
218 * The __SC__ check is for Symantec.
222 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
226 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
227 # define zmemcpy _fmemcpy
228 # define zmemcmp _fmemcmp
229 # define zmemzero(dest, len) _fmemset(dest, 0, len)
231 # define zmemcpy memcpy
232 # define zmemcmp memcmp
233 # define zmemzero(dest, len) memset(dest, 0, len)
236 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
237 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
238 extern void zmemzero OF((Bytef* dest, uInt len));
241 /* Diagnostic functions */
244 extern int z_verbose;
245 extern void z_error OF((char *m));
246 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
247 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
248 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
249 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
250 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
251 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
253 # define Assert(cond,msg)
258 # define Tracecv(c,x)
262 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
263 void zcfree OF((voidpf opaque, voidpf ptr));
265 #define ZALLOC(strm, items, size) \
266 (*((strm)->zalloc))((strm)->opaque, (items), (size))
267 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
268 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}