1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2003 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.
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 /*@unchecked@*/ /*@observer@*/
42 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
43 /* (size given to avoid silly warnings with Visual C++) */
45 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
47 #define ERR_RETURN(strm,err) \
48 /*@-mods@*/ return (strm->msg = (char*)ERR_MSG(err), (err)) /*@=mods@*/
49 /* To be used only when the state is known to be valid */
51 /* common constants */
54 # define DEF_WBITS MAX_WBITS
56 /* default windowBits for decompression. MAX_WBITS is for compression only */
58 #if MAX_MEM_LEVEL >= 8
59 # define DEF_MEM_LEVEL 8
61 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
63 /* default memLevel */
65 #define STORED_BLOCK 0
66 #define STATIC_TREES 1
68 /* The three kinds of block type */
72 /* The minimum and maximum match lengths */
74 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
76 /* target dependencies */
78 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
80 # if defined(__TURBOC__) || defined(__BORLANDC__)
81 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
82 /* Allow compilation with ANSI keywords only enabled */
83 void _Cdecl farfree( void *block )
85 void *_Cdecl farmalloc( unsigned long nbytes )
90 # else /* MSC or DJGPP */
99 #if defined(VAXC) || defined(VMS)
100 # define OS_CODE 0x02
101 # define F_OPEN(name, mode) \
102 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
105 #if defined(ATARI) || defined(atarist)
106 # define OS_CODE 0x05
110 # define OS_CODE 0x06
113 #if defined(MACOS) || defined(TARGET_OS_MAC)
114 # define OS_CODE 0x07
115 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
116 # include <unix.h> /* for fdopen */
119 # define fdopen(fd,mode) NULL /* No fdopen() */
125 # define OS_CODE 0x0a
129 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
130 # define OS_CODE 0x0b
134 #ifdef __50SERIES /* Prime/PRIMOS */
135 # define OS_CODE 0x0f
138 #if defined(_BEOS_) || defined(RISCOS)
139 # define fdopen(fd,mode) NULL /* No fdopen() */
142 #if (defined(_MSC_VER) && (_MSC_VER > 600))
143 # if defined(_WIN32_WCE)
144 # define fdopen(fd,mode) NULL /* No fdopen() */
145 # ifndef _PTRDIFF_T_DEFINED
146 typedef int ptrdiff_t;
147 # define _PTRDIFF_T_DEFINED
150 # define fdopen(fd,type) _fdopen(fd,type)
154 /* common defaults */
157 # define OS_CODE 0x03 /* assume Unix */
161 # define F_OPEN(name, mode) fopen((name), (mode))
166 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
167 # ifndef HAVE_VSNPRINTF
168 # define HAVE_VSNPRINTF
171 #if defined(__CYGWIN__)
172 # ifndef HAVE_VSNPRINTF
173 # define HAVE_VSNPRINTF
176 #ifndef HAVE_VSNPRINTF
178 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
179 but for now we just assume it doesn't. */
180 # define NO_vsnprintf
183 # define NO_vsnprintf
186 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
187 # if !defined(vsnprintf) && !defined(NO_vsnprintf)
188 # define vsnprintf _vsnprintf
192 # define NO_vsnprintf
196 # define NO_vsnprintf
201 extern char *strerror OF((int))
204 # define zstrerror(errnum) strerror(errnum)
206 # define zstrerror(errnum) ""
212 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
213 /* Use our own functions for small and medium model with MSC <= 5.0.
214 * You may have to use the same strategy for Borland C (untested).
215 * The __SC__ check is for Symantec.
219 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
223 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
224 # define zmemcpy _fmemcpy
225 # define zmemcmp _fmemcmp
226 # define zmemzero(dest, len) _fmemset(dest, 0, len)
228 # define zmemcpy memcpy
229 # define zmemcmp memcmp
230 # define zmemzero(dest, len) memset(dest, 0, len)
233 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len))
235 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len))
237 extern void zmemzero OF((Bytef* dest, uInt len))
241 /* Diagnostic functions */
244 extern int z_verbose;
245 extern void z_error OF((char *m))
247 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
248 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
249 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
250 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
251 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
252 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
254 # define Assert(cond,msg)
259 # define Tracecv(c,x)
263 /*@only@*/ /*@null@*/
264 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size))
266 void zcfree OF((voidpf opaque, /*@only@*/ 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);}