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  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
  4.  */
  5.  
  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.
  9.  */
  10.  
  11. /* @(#) $Id$ */
  12.  
  13. #ifndef ZUTIL_H
  14. #define ZUTIL_H
  15.  
  16. #if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
  17. #  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
  18. #else
  19. #  define ZLIB_INTERNAL
  20. #endif
  21.  
  22. #include "zlib.h"
  23.  
  24. #ifdef STDC
  25. #  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
  26. #    include <stddef.h>
  27. #  endif
  28. #  include <string.h>
  29. #  include <stdlib.h>
  30. #endif
  31.  
  32. #ifndef local
  33. #  define local static
  34. #endif
  35. /* compile with -Dlocal if your debugger can't find static symbols */
  36.  
  37. typedef unsigned char  uch;
  38. typedef uch FAR uchf;
  39. typedef unsigned short ush;
  40. typedef ush FAR ushf;
  41. typedef unsigned long  ulg;
  42.  
  43. extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
  44. /* (size given to avoid silly warnings with Visual C++) */
  45.  
  46. #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
  47.  
  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 */
  51.  
  52.         /* common constants */
  53.  
  54. #ifndef DEF_WBITS
  55. #  define DEF_WBITS MAX_WBITS
  56. #endif
  57. /* default windowBits for decompression. MAX_WBITS is for compression only */
  58.  
  59. #if MAX_MEM_LEVEL >= 8
  60. #  define DEF_MEM_LEVEL 8
  61. #else
  62. #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  63. #endif
  64. /* default memLevel */
  65.  
  66. #define STORED_BLOCK 0
  67. #define STATIC_TREES 1
  68. #define DYN_TREES    2
  69. /* The three kinds of block type */
  70.  
  71. #define MIN_MATCH  3
  72. #define MAX_MATCH  258
  73. /* The minimum and maximum match lengths */
  74.  
  75. #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
  76.  
  77.         /* target dependencies */
  78.  
  79. #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
  80. #  define OS_CODE  0x00
  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 );
  86. #    else
  87. #      include <alloc.h>
  88. #    endif
  89. #  else /* MSC or DJGPP */
  90. #    include <malloc.h>
  91. #  endif
  92. #endif
  93.  
  94. #ifdef AMIGA
  95. #  define OS_CODE  0x01
  96. #endif
  97.  
  98. #if defined(VAXC) || defined(VMS)
  99. #  define OS_CODE  0x02
  100. #  define F_OPEN(name, mode) \
  101.      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
  102. #endif
  103.  
  104. #if defined(ATARI) || defined(atarist)
  105. #  define OS_CODE  0x05
  106. #endif
  107.  
  108. #ifdef OS2
  109. #  define OS_CODE  0x06
  110. #  ifdef M_I86
  111. #    include <malloc.h>
  112. #  endif
  113. #endif
  114.  
  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 */
  119. #  else
  120. #    ifndef fdopen
  121. #      define fdopen(fd,mode) NULL /* No fdopen() */
  122. #    endif
  123. #  endif
  124. #endif
  125.  
  126. #ifdef TOPS20
  127. #  define OS_CODE  0x0a
  128. #endif
  129.  
  130. #ifdef WIN32
  131. #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
  132. #    define OS_CODE  0x0b
  133. #  endif
  134. #endif
  135.  
  136. #ifdef __50SERIES /* Prime/PRIMOS */
  137. #  define OS_CODE  0x0f
  138. #endif
  139.  
  140. #if defined(_BEOS_) || defined(RISCOS)
  141. #  define fdopen(fd,mode) NULL /* No fdopen() */
  142. #endif
  143.  
  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
  150. #    endif
  151. #  else
  152. #    define fdopen(fd,type)  _fdopen(fd,type)
  153. #  endif
  154. #endif
  155.  
  156. #if defined(__BORLANDC__)
  157.   #pragma warn -8004
  158.   #pragma warn -8008
  159.   #pragma warn -8066
  160. #endif
  161.  
  162. /* provide prototypes for these when building zlib without LFS */
  163. #if !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));
  166. #endif
  167.  
  168.         /* common defaults */
  169.  
  170. #ifndef OS_CODE
  171. #  define OS_CODE  0x03  /* assume Unix */
  172. #endif
  173.  
  174. #ifndef F_OPEN
  175. #  define F_OPEN(name, mode) fopen((name), (mode))
  176. #endif
  177.  
  178.          /* functions */
  179.  
  180. #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
  181. #  ifndef HAVE_VSNPRINTF
  182. #    define HAVE_VSNPRINTF
  183. #  endif
  184. #endif
  185. #if defined(__CYGWIN__)
  186. #  ifndef HAVE_VSNPRINTF
  187. #    define HAVE_VSNPRINTF
  188. #  endif
  189. #endif
  190. #ifndef HAVE_VSNPRINTF
  191. #  ifdef MSDOS
  192.      /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
  193.         but for now we just assume it doesn't. */
  194. #    define NO_vsnprintf
  195. #  endif
  196. #  ifdef __TURBOC__
  197. #    define NO_vsnprintf
  198. #  endif
  199. #  ifdef WIN32
  200.      /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
  201. #    if !defined(vsnprintf) && !defined(NO_vsnprintf)
  202. #      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
  203. #         define vsnprintf _vsnprintf
  204. #      endif
  205. #    endif
  206. #  endif
  207. #  ifdef __SASC
  208. #    define NO_vsnprintf
  209. #  endif
  210. #endif
  211. #ifdef VMS
  212. #  define NO_vsnprintf
  213. #endif
  214.  
  215. #if defined(pyr)
  216. #  define NO_MEMCPY
  217. #endif
  218. #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
  219.  /* Use our own functions for small and medium model with MSC <= 5.0.
  220.   * You may have to use the same strategy for Borland C (untested).
  221.   * The __SC__ check is for Symantec.
  222.   */
  223. #  define NO_MEMCPY
  224. #endif
  225. #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
  226. #  define HAVE_MEMCPY
  227. #endif
  228. #ifdef HAVE_MEMCPY
  229. #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
  230. #    define zmemcpy _fmemcpy
  231. #    define zmemcmp _fmemcmp
  232. #    define zmemzero(dest, len) _fmemset(dest, 0, len)
  233. #  else
  234. #    define zmemcpy memcpy
  235. #    define zmemcmp memcmp
  236. #    define zmemzero(dest, len) memset(dest, 0, len)
  237. #  endif
  238. #else
  239.    void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
  240.    int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
  241.    void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
  242. #endif
  243.  
  244. /* Diagnostic functions */
  245. #ifdef DEBUG
  246. #  include <stdio.h>
  247.    extern int ZLIB_INTERNAL z_verbose;
  248.    extern void ZLIB_INTERNAL z_error OF((char *m));
  249. #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
  250. #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
  251. #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
  252. #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
  253. #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
  254. #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
  255. #else
  256. #  define Assert(cond,msg)
  257. #  define Trace(x)
  258. #  define Tracev(x)
  259. #  define Tracevv(x)
  260. #  define Tracec(c,x)
  261. #  define Tracecv(c,x)
  262. #endif
  263.  
  264.  
  265. voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
  266.                         unsigned size));
  267. void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
  268.  
  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);}
  273.  
  274. #endif /* ZUTIL_H */
  275.