1/* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2005 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#define ZLIB_INTERNAL
17#include "../rsync.h"
18#include "zlib.h"
19
20#if 0
21#ifdef STDC
22#  ifndef _WIN32_WCE
23#    include <stddef.h>
24#  endif
25#  include <string.h>
26#  include <stdlib.h>
27#endif
28#ifdef NO_ERRNO_H
29#   ifdef _WIN32_WCE
30      /* The Microsoft C Run-Time Library for Windows CE doesn't have
31       * errno.  We define it as a global variable to simplify porting.
32       * Its value is always 0 and should not be used.  We rename it to
33       * avoid conflict with other libraries that use the same workaround.
34       */
35#     define errno z_errno
36#   endif
37    extern int errno;
38#else
39#  ifndef _WIN32_WCE
40#    include <errno.h>
41#  endif
42#endif
43#endif
44
45#ifndef local
46#  define local static
47#endif
48/* compile with -Dlocal if your debugger can't find static symbols */
49
50typedef unsigned char  uch;
51typedef uch FAR uchf;
52typedef unsigned short ush;
53typedef ush FAR ushf;
54typedef unsigned long  ulg;
55
56extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
57/* (size given to avoid silly warnings with Visual C++) */
58
59#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
60
61#define ERR_RETURN(strm,err) \
62  return (strm->msg = (char*)ERR_MSG(err), (err))
63/* To be used only when the state is known to be valid */
64
65        /* common constants */
66
67#ifndef DEF_WBITS
68#  define DEF_WBITS MAX_WBITS
69#endif
70/* default windowBits for decompression. MAX_WBITS is for compression only */
71
72#if MAX_MEM_LEVEL >= 8
73#  define DEF_MEM_LEVEL 8
74#else
75#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
76#endif
77/* default memLevel */
78
79#define STORED_BLOCK 0
80#define STATIC_TREES 1
81#define DYN_TREES    2
82/* The three kinds of block type */
83
84#define MIN_MATCH  3
85#define MAX_MATCH  258
86/* The minimum and maximum match lengths */
87
88#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
89
90        /* target dependencies */
91
92#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
93#  define OS_CODE  0x00
94#  if defined(__TURBOC__) || defined(__BORLANDC__)
95#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
96       /* Allow compilation with ANSI keywords only enabled */
97       void _Cdecl farfree( void *block );
98       void *_Cdecl farmalloc( unsigned long nbytes );
99#    else
100#      include <alloc.h>
101#    endif
102#  else /* MSC or DJGPP */
103#    include <malloc.h>
104#  endif
105#endif
106
107#ifdef AMIGA
108#  define OS_CODE  0x01
109#endif
110
111#if defined(VAXC) || defined(VMS)
112#  define OS_CODE  0x02
113#  define F_OPEN(name, mode) \
114     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
115#endif
116
117#if defined(ATARI) || defined(atarist)
118#  define OS_CODE  0x05
119#endif
120
121#ifdef OS2
122#  define OS_CODE  0x06
123#  ifdef M_I86
124     #include <malloc.h>
125#  endif
126#endif
127
128#if defined(MACOS) || defined(TARGET_OS_MAC)
129#  define OS_CODE  0x07
130#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
131#    include <unix.h> /* for fdopen */
132#  else
133#    ifndef fdopen
134#      define fdopen(fd,mode) NULL /* No fdopen() */
135#    endif
136#  endif
137#endif
138
139#ifdef TOPS20
140#  define OS_CODE  0x0a
141#endif
142
143#ifdef WIN32
144#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
145#    define OS_CODE  0x0b
146#  endif
147#endif
148
149#ifdef __50SERIES /* Prime/PRIMOS */
150#  define OS_CODE  0x0f
151#endif
152
153#if defined(_BEOS_) || defined(RISCOS)
154#  define fdopen(fd,mode) NULL /* No fdopen() */
155#endif
156
157#if (defined(_MSC_VER) && (_MSC_VER > 600))
158#  if defined(_WIN32_WCE)
159#    define fdopen(fd,mode) NULL /* No fdopen() */
160#    ifndef _PTRDIFF_T_DEFINED
161       typedef int ptrdiff_t;
162#      define _PTRDIFF_T_DEFINED
163#    endif
164#  else
165#    define fdopen(fd,type)  _fdopen(fd,type)
166#  endif
167#endif
168
169        /* common defaults */
170
171#ifndef OS_CODE
172#  define OS_CODE  0x03  /* assume Unix */
173#endif
174
175#ifndef F_OPEN
176#  define F_OPEN(name, mode) fopen((name), (mode))
177#endif
178
179         /* functions */
180
181#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
182#  ifndef HAVE_VSNPRINTF
183#    define HAVE_VSNPRINTF
184#  endif
185#endif
186#if defined(__CYGWIN__)
187#  ifndef HAVE_VSNPRINTF
188#    define HAVE_VSNPRINTF
189#  endif
190#endif
191#ifndef HAVE_VSNPRINTF
192#  ifdef MSDOS
193     /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
194        but for now we just assume it doesn't. */
195#    define NO_vsnprintf
196#  endif
197#  ifdef __TURBOC__
198#    define NO_vsnprintf
199#  endif
200#  ifdef WIN32
201     /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
202#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
203#      define vsnprintf _vsnprintf
204#    endif
205#  endif
206#  ifdef __SASC
207#    define NO_vsnprintf
208#  endif
209#endif
210#ifdef VMS
211#  define NO_vsnprintf
212#endif
213
214#if defined(pyr)
215#  define NO_MEMCPY
216#endif
217#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
218 /* Use our own functions for small and medium model with MSC <= 5.0.
219  * You may have to use the same strategy for Borland C (untested).
220  * The __SC__ check is for Symantec.
221  */
222#  define NO_MEMCPY
223#endif
224#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
225#  define HAVE_MEMCPY
226#endif
227#ifdef HAVE_MEMCPY
228#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
229#    define zmemcpy _fmemcpy
230#    define zmemcmp _fmemcmp
231#    define zmemzero(dest, len) _fmemset(dest, 0, len)
232#  else
233#    define zmemcpy memcpy
234#    define zmemcmp memcmp
235#    define zmemzero(dest, len) memset(dest, 0, len)
236#  endif
237#else
238   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
239   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
240   extern void zmemzero OF((Bytef* dest, uInt len));
241#endif
242
243/* Diagnostic functions */
244#ifdef DEBUG
245#  include <stdio.h>
246   extern int z_verbose;
247   extern void z_error    OF((char *m));
248#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
249#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
250#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
251#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
252#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
253#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
254#else
255#  define Assert(cond,msg)
256#  define Trace(x)
257#  define Tracev(x)
258#  define Tracevv(x)
259#  define Tracec(c,x)
260#  define Tracecv(c,x)
261#endif
262
263
264voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
265void   zcfree  OF((voidpf opaque, voidpf ptr));
266
267#define ZALLOC(strm, items, size) \
268           (*((strm)->zalloc))((strm)->opaque, (items), (size))
269#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
270#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
271
272#endif /* ZUTIL_H */
273