1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2010 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.
16 #if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
17 # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
19 # define ZLIB_INTERNAL
25 # if !(defined(_WIN32_WCE) && defined(_MSC_VER))
35 /* compile with -Dlocal if your debugger can't find static symbols */
37 typedef unsigned char uch;
39 typedef unsigned short ush;
41 typedef unsigned long ulg;
43 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
44 /* (size given to avoid silly warnings with Visual C++) */
46 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
48 #define ERR_RETURN(strm,err) \
49 return (strm->msg = (char*)ERR_MSG(err), (err))
50 /* To be used only when the state is known to be valid */
52 /* common constants */
55 # define DEF_WBITS MAX_WBITS
57 /* default windowBits for decompression. MAX_WBITS is for compression only */
59 #if MAX_MEM_LEVEL >= 8
60 # define DEF_MEM_LEVEL 8
62 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
64 /* default memLevel */
66 #define STORED_BLOCK 0
67 #define STATIC_TREES 1
69 /* The three kinds of block type */
73 /* The minimum and maximum match lengths */
75 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
77 /* target dependencies */
79 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
81 # if defined(__TURBOC__) || defined(__BORLANDC__)
82 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
83 /* Allow compilation with ANSI keywords only enabled */
84 void _Cdecl farfree( void *block );
85 void *_Cdecl farmalloc( unsigned long nbytes );
89 # else /* MSC or DJGPP */
98 #if defined(VAXC) || defined(VMS)
100 # define F_OPEN(name, mode) \
101 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
104 #if defined(ATARI) || defined(atarist)
105 # define OS_CODE 0x05
109 # define OS_CODE 0x06
115 #if defined(MACOS) || defined(TARGET_OS_MAC)
116 # define OS_CODE 0x07
117 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
118 # include <unix.h> /* for fdopen */
121 # define fdopen(fd,mode) NULL /* No fdopen() */
127 # define OS_CODE 0x0a
131 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
132 # define OS_CODE 0x0b
136 #ifdef __50SERIES /* Prime/PRIMOS */
137 # define OS_CODE 0x0f
140 #if defined(_BEOS_) || defined(RISCOS)
141 # define fdopen(fd,mode) NULL /* No fdopen() */
144 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
145 # if defined(_WIN32_WCE)
146 # define fdopen(fd,mode) NULL /* No fdopen() */
147 # ifndef _PTRDIFF_T_DEFINED
148 typedef int ptrdiff_t;
149 # define _PTRDIFF_T_DEFINED
152 # define fdopen(fd,type) _fdopen(fd,type)
156 #if defined(__BORLANDC__)
162 /* provide prototypes for these when building zlib without LFS */
163 #if !defined(_WIN32) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
164 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
165 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
168 /* common defaults */
171 # define OS_CODE 0x03 /* assume Unix */
175 # define F_OPEN(name, mode) fopen((name), (mode))
183 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
184 /* Use our own functions for small and medium model with MSC <= 5.0.
185 * You may have to use the same strategy for Borland C (untested).
186 * The __SC__ check is for Symantec.
190 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
194 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
195 # define zmemcpy _fmemcpy
196 # define zmemcmp _fmemcmp
197 # define zmemzero(dest, len) _fmemset(dest, 0, len)
199 # define zmemcpy memcpy
200 # define zmemcmp memcmp
201 # define zmemzero(dest, len) memset(dest, 0, len)
204 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
205 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
206 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
209 /* Diagnostic functions */
212 extern int ZLIB_INTERNAL z_verbose;
213 extern void ZLIB_INTERNAL z_error OF((char *m));
214 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
215 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
216 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
217 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
218 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
219 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
221 # define Assert(cond,msg)
226 # define Tracecv(c,x)
230 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
232 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
234 #define ZALLOC(strm, items, size) \
235 (*((strm)->zalloc))((strm)->opaque, (items), (size))
236 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
237 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}