1/*
2 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
3 * Use is subject to license terms.
4 */
5
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
9 */
10
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.
14 */
15
16#ifndef _ZUTIL_H
17#define _ZUTIL_H
18
19#pragma ident	"%Z%%M%	%I%	%E% SMI"
20
21#define ZLIB_INTERNAL
22#include "zlib.h"
23
24#ifdef STDC
25#  ifndef _WIN32_WCE
26#    include <stddef.h>
27#  endif
28#  include <string.h>
29#  include <stdlib.h>
30#endif
31#ifdef NO_ERRNO_H
32#   ifdef _WIN32_WCE
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.
37       */
38#     define errno z_errno
39#   endif
40    extern int errno;
41#else
42#  ifndef _WIN32_WCE
43#    include <sys/errno.h>
44#  endif
45#endif
46
47#ifndef local
48#  define local static
49#endif
50/* compile with -Dlocal if your debugger can't find static symbols */
51
52typedef unsigned char  uch;
53typedef uch FAR uchf;
54typedef unsigned short ush;
55typedef ush FAR ushf;
56typedef unsigned long  ulg;
57
58extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
59/* (size given to avoid silly warnings with Visual C++) */
60
61#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
62
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 */
66
67        /* common constants */
68
69#ifndef DEF_WBITS
70#  define DEF_WBITS MAX_WBITS
71#endif
72/* default windowBits for decompression. MAX_WBITS is for compression only */
73
74#if MAX_MEM_LEVEL >= 8
75#  define DEF_MEM_LEVEL 8
76#else
77#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
78#endif
79/* default memLevel */
80
81#define STORED_BLOCK 0
82#define STATIC_TREES 1
83#define DYN_TREES    2
84/* The three kinds of block type */
85
86#define MIN_MATCH  3
87#define MAX_MATCH  258
88/* The minimum and maximum match lengths */
89
90#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
91
92        /* target dependencies */
93
94#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
95#  define OS_CODE  0x00
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 );
101#    else
102#      include <alloc.h>
103#    endif
104#  else /* MSC or DJGPP */
105#    include <malloc.h>
106#  endif
107#endif
108
109#ifdef AMIGA
110#  define OS_CODE  0x01
111#endif
112
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")
117#endif
118
119#if defined(ATARI) || defined(atarist)
120#  define OS_CODE  0x05
121#endif
122
123#ifdef OS2
124#  define OS_CODE  0x06
125#  ifdef M_I86
126     #include <malloc.h>
127#  endif
128#endif
129
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 */
134#  else
135#    ifndef fdopen
136#      define fdopen(fd,mode) NULL /* No fdopen() */
137#    endif
138#  endif
139#endif
140
141#ifdef TOPS20
142#  define OS_CODE  0x0a
143#endif
144
145#ifdef WIN32
146#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
147#    define OS_CODE  0x0b
148#  endif
149#endif
150
151#ifdef __50SERIES /* Prime/PRIMOS */
152#  define OS_CODE  0x0f
153#endif
154
155#if defined(_BEOS_) || defined(RISCOS)
156#  define fdopen(fd,mode) NULL /* No fdopen() */
157#endif
158
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
165#    endif
166#  else
167#    define fdopen(fd,type)  _fdopen(fd,type)
168#  endif
169#endif
170
171        /* common defaults */
172
173#ifndef OS_CODE
174#  define OS_CODE  0x03  /* assume Unix */
175#endif
176
177#ifndef F_OPEN
178#  define F_OPEN(name, mode) fopen((name), (mode))
179#endif
180
181         /* functions */
182
183#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
184#  ifndef HAVE_VSNPRINTF
185#    define HAVE_VSNPRINTF
186#  endif
187#endif
188#if defined(__CYGWIN__)
189#  ifndef HAVE_VSNPRINTF
190#    define HAVE_VSNPRINTF
191#  endif
192#endif
193#ifndef HAVE_VSNPRINTF
194#  ifdef MSDOS
195     /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
196        but for now we just assume it doesn't. */
197#    define NO_vsnprintf
198#  endif
199#  ifdef __TURBOC__
200#    define NO_vsnprintf
201#  endif
202#  ifdef WIN32
203     /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
204#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
205#      define vsnprintf _vsnprintf
206#    endif
207#  endif
208#  ifdef __SASC
209#    define NO_vsnprintf
210#  endif
211#endif
212#ifdef VMS
213#  define NO_vsnprintf
214#endif
215
216#if defined(pyr)
217#  define NO_MEMCPY
218#endif
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.
223  */
224#  define NO_MEMCPY
225#endif
226#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
227#  define HAVE_MEMCPY
228#endif
229#ifdef HAVE_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)
234#  else
235#    define zmemcpy memcpy
236#    define zmemcmp memcmp
237#    define zmemzero(dest, len) memset(dest, 0, len)
238#  endif
239#else
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));
243#endif
244
245/* Diagnostic functions */
246#ifdef DEBUG
247#  include <stdio.h>
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 ;}
256#else
257#  define Assert(cond,msg)
258#  define Trace(x)
259#  define Tracev(x)
260#  define Tracevv(x)
261#  define Tracec(c,x)
262#  define Tracecv(c,x)
263#endif
264
265
266voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
267void   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