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
58#define z_errmsg opensolaris_z_errmsg
59
60extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
61/* (size given to avoid silly warnings with Visual C++) */
62
63#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
64
65#define ERR_RETURN(strm,err) \
66  return (strm->msg = (char*)ERR_MSG(err), (err))
67/* To be used only when the state is known to be valid */
68
69        /* common constants */
70
71#ifndef DEF_WBITS
72#  define DEF_WBITS MAX_WBITS
73#endif
74/* default windowBits for decompression. MAX_WBITS is for compression only */
75
76#if MAX_MEM_LEVEL >= 8
77#  define DEF_MEM_LEVEL 8
78#else
79#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
80#endif
81/* default memLevel */
82
83#define STORED_BLOCK 0
84#define STATIC_TREES 1
85#define DYN_TREES    2
86/* The three kinds of block type */
87
88#define MIN_MATCH  3
89#define MAX_MATCH  258
90/* The minimum and maximum match lengths */
91
92#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
93
94        /* target dependencies */
95
96#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
97#  define OS_CODE  0x00
98#  if defined(__TURBOC__) || defined(__BORLANDC__)
99#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
100       /* Allow compilation with ANSI keywords only enabled */
101       void _Cdecl farfree( void *block );
102       void *_Cdecl farmalloc( unsigned long nbytes );
103#    else
104#      include <alloc.h>
105#    endif
106#  else /* MSC or DJGPP */
107#    include <malloc.h>
108#  endif
109#endif
110
111#ifdef AMIGA
112#  define OS_CODE  0x01
113#endif
114
115#if defined(VAXC) || defined(VMS)
116#  define OS_CODE  0x02
117#  define F_OPEN(name, mode) \
118     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
119#endif
120
121#if defined(ATARI) || defined(atarist)
122#  define OS_CODE  0x05
123#endif
124
125#ifdef OS2
126#  define OS_CODE  0x06
127#  ifdef M_I86
128     #include <malloc.h>
129#  endif
130#endif
131
132#if defined(MACOS) || defined(TARGET_OS_MAC)
133#  define OS_CODE  0x07
134#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
135#    include <unix.h> /* for fdopen */
136#  else
137#    ifndef fdopen
138#      define fdopen(fd,mode) NULL /* No fdopen() */
139#    endif
140#  endif
141#endif
142
143#ifdef TOPS20
144#  define OS_CODE  0x0a
145#endif
146
147#ifdef WIN32
148#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
149#    define OS_CODE  0x0b
150#  endif
151#endif
152
153#ifdef __50SERIES /* Prime/PRIMOS */
154#  define OS_CODE  0x0f
155#endif
156
157#if defined(_BEOS_) || defined(RISCOS)
158#  define fdopen(fd,mode) NULL /* No fdopen() */
159#endif
160
161#if (defined(_MSC_VER) && (_MSC_VER > 600))
162#  if defined(_WIN32_WCE)
163#    define fdopen(fd,mode) NULL /* No fdopen() */
164#    ifndef _PTRDIFF_T_DEFINED
165       typedef int ptrdiff_t;
166#      define _PTRDIFF_T_DEFINED
167#    endif
168#  else
169#    define fdopen(fd,type)  _fdopen(fd,type)
170#  endif
171#endif
172
173        /* common defaults */
174
175#ifndef OS_CODE
176#  define OS_CODE  0x03  /* assume Unix */
177#endif
178
179#ifndef F_OPEN
180#  define F_OPEN(name, mode) fopen((name), (mode))
181#endif
182
183         /* functions */
184
185#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
186#  ifndef HAVE_VSNPRINTF
187#    define HAVE_VSNPRINTF
188#  endif
189#endif
190#if defined(__CYGWIN__)
191#  ifndef HAVE_VSNPRINTF
192#    define HAVE_VSNPRINTF
193#  endif
194#endif
195#ifndef HAVE_VSNPRINTF
196#  ifdef MSDOS
197     /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
198        but for now we just assume it doesn't. */
199#    define NO_vsnprintf
200#  endif
201#  ifdef __TURBOC__
202#    define NO_vsnprintf
203#  endif
204#  ifdef WIN32
205     /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
206#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
207#      define vsnprintf _vsnprintf
208#    endif
209#  endif
210#  ifdef __SASC
211#    define NO_vsnprintf
212#  endif
213#endif
214#ifdef VMS
215#  define NO_vsnprintf
216#endif
217
218#if defined(pyr)
219#  define NO_MEMCPY
220#endif
221#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
222 /* Use our own functions for small and medium model with MSC <= 5.0.
223  * You may have to use the same strategy for Borland C (untested).
224  * The __SC__ check is for Symantec.
225  */
226#  define NO_MEMCPY
227#endif
228#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
229#  define HAVE_MEMCPY
230#endif
231#ifdef HAVE_MEMCPY
232#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
233#    define zmemcpy _fmemcpy
234#    define zmemcmp _fmemcmp
235#    define zmemzero(dest, len) _fmemset(dest, 0, len)
236#  else
237#    define zmemcpy memcpy
238#    define zmemcmp memcmp
239#    define zmemzero(dest, len) memset(dest, 0, len)
240#  endif
241#else
242   extern void zmemcpy  OF((void* dest, const void* source, uInt len));
243   extern int  zmemcmp  OF((const void* s1, const void* s2, uInt len));
244   extern void zmemzero OF((void* dest, uInt len));
245#endif
246
247/* Diagnostic functions */
248#ifdef DEBUG
249#  include <stdio.h>
250   extern int z_verbose;
251   extern void z_error    OF((char *m));
252#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
253#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
254#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
255#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
256#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
257#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
258#else
259#  define Assert(cond,msg)
260#  define Trace(x)
261#  define Tracev(x)
262#  define Tracevv(x)
263#  define Tracec(c,x)
264#  define Tracecv(c,x)
265#endif
266
267
268voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
269void   zcfree  OF((voidpf opaque, voidpf ptr));
270
271#define ZALLOC(strm, items, size) \
272           (*((strm)->zalloc))((strm)->opaque, (items), (size))
273#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
274#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
275
276#endif /* _ZUTIL_H */
277