1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995 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.
11 /* $Id: zutil.h,v 1.8 1995/05/02 15:44:46 jloup Exp $ */
31 /* compile with -Dlocal if your debugger can't find static symbols */
33 typedef unsigned char uch;
34 typedef unsigned short ush;
35 typedef unsigned long ulg;
37 extern char *z_errmsg[]; /* indexed by 1-zlib_error */
39 #define ERR_RETURN(strm,err) return (strm->msg=z_errmsg[1-err], err)
40 /* To be used only when the state is known to be valid */
42 /* common constants */
47 /* default windowBits for decompression. MAX_WBITS is for compression only */
49 #if MAX_MEM_LEVEL >= 8
50 # define DEF_MEM_LEVEL 8
52 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
54 /* default memLevel */
56 #define STORED_BLOCK 0
57 #define STATIC_TREES 1
59 /* The three kinds of block type */
63 /* The minimum and maximum match lengths */
65 /* target dependencies */
80 #ifdef WIN32 /* Windows NT */
84 #if defined(VAXC) || defined(VMS)
86 # define FOPEN(name, mode) \
87 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
94 #if defined(ATARI) || defined(atarist)
102 #ifdef __50SERIES /* Prime/PRIMOS */
103 # define OS_CODE 0x0F
107 # define OS_CODE 0x0a
110 /* Common defaults */
113 # define OS_CODE 0x03 /* assume Unix */
117 # define FOPEN(name, mode) fopen((name), (mode))
123 extern char *strerror __P((int));
124 # define zstrerror(errnum) strerror(errnum)
126 # define zstrerror(errnum) ""
129 #if defined(STDC) && !defined(HAVE_MEMCPY)
133 # define zmemcpy memcpy
134 # define zmemzero(dest, len) memset(dest, 0, len)
136 extern void zmemcpy __P((Byte* dest, Byte* source, uInt len));
137 extern void zmemzero __P((Byte* dest, uInt len));
140 /* Diagnostic functions */
146 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
147 # define Trace(x) fprintf x
148 # define Tracev(x) {if (verbose) fprintf x ;}
149 # define Tracevv(x) {if (verbose>1) fprintf x ;}
150 # define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
151 # define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
153 # define Assert(cond,msg)
158 # define Tracecv(c,x)
162 typedef uLong (*check_func) __P((uLong check, Byte *buf, uInt len));
164 extern void z_error __P((char *m));
166 voidp zcalloc __P((voidp opaque, unsigned items, unsigned size));
167 void zcfree __P((voidp opaque, voidp ptr));
169 #define ZALLOC(strm, items, size) \
170 (*((strm)->zalloc))((strm)->opaque, (items), (size))
171 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidp)(addr))
172 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
174 #endif /* _Z_UTIL_H */