Annotation of sys/lib/libz/zutil.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: zutil.h,v 1.17 2006/11/29 10:37:03 mickey Exp $ */
! 2: /* zutil.h -- internal interface and configuration of the compression library
! 3: * Copyright (C) 1995-2005 Jean-loup Gailly.
! 4: * For conditions of distribution and use, see copyright notice in zlib.h
! 5: */
! 6:
! 7: /* WARNING: this file should *not* be used by applications. It is
! 8: part of the implementation of the compression library and is
! 9: subject to change. Applications should only use zlib.h.
! 10: */
! 11:
! 12:
! 13: #ifndef ZUTIL_H
! 14: #define ZUTIL_H
! 15:
! 16: #define ZLIB_INTERNAL
! 17: #include "zlib.h"
! 18:
! 19: #ifdef _STANDALONE
! 20: #include <lib/libsa/stand.h>
! 21: #else
! 22: #ifdef STDC
! 23: # ifndef _WIN32_WCE
! 24: # include <stddef.h>
! 25: # endif
! 26: # include <string.h>
! 27: # include <stdlib.h>
! 28: #endif
! 29: #ifdef NO_ERRNO_H
! 30: # ifdef _WIN32_WCE
! 31: /* The Microsoft C Run-Time Library for Windows CE doesn't have
! 32: * errno. We define it as a global variable to simplify porting.
! 33: * Its value is always 0 and should not be used. We rename it to
! 34: * avoid conflict with other libraries that use the same workaround.
! 35: */
! 36: # define errno z_errno
! 37: # endif
! 38: extern int errno;
! 39: #else
! 40: # ifndef _WIN32_WCE
! 41: # include <errno.h>
! 42: # endif
! 43: #endif
! 44: #endif
! 45:
! 46: #ifndef local
! 47: # define local static
! 48: #endif
! 49: /* compile with -Dlocal if your debugger can't find static symbols */
! 50:
! 51: typedef unsigned char uch;
! 52: typedef uch FAR uchf;
! 53: typedef unsigned short ush;
! 54: typedef ush FAR ushf;
! 55: typedef unsigned long ulg;
! 56:
! 57: extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
! 58: /* (size given to avoid silly warnings with Visual C++) */
! 59:
! 60: #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
! 61:
! 62: #define ERR_RETURN(strm,err) \
! 63: return (strm->msg = (char*)ERR_MSG(err), (err))
! 64: /* To be used only when the state is known to be valid */
! 65:
! 66: /* common constants */
! 67:
! 68: #ifndef DEF_WBITS
! 69: # define DEF_WBITS MAX_WBITS
! 70: #endif
! 71: /* default windowBits for decompression. MAX_WBITS is for compression only */
! 72:
! 73: #if MAX_MEM_LEVEL >= 8
! 74: # define DEF_MEM_LEVEL 8
! 75: #else
! 76: # define DEF_MEM_LEVEL MAX_MEM_LEVEL
! 77: #endif
! 78: /* default memLevel */
! 79:
! 80: #define STORED_BLOCK 0
! 81: #define STATIC_TREES 1
! 82: #define DYN_TREES 2
! 83: /* The three kinds of block type */
! 84:
! 85: #define MIN_MATCH 3
! 86: #define MAX_MATCH 258
! 87: /* The minimum and maximum match lengths */
! 88:
! 89: #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
! 90:
! 91: /* target dependencies */
! 92:
! 93: #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
! 94: # define OS_CODE 0x00
! 95: # if defined(__TURBOC__) || defined(__BORLANDC__)
! 96: # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
! 97: /* Allow compilation with ANSI keywords only enabled */
! 98: void _Cdecl farfree( void *block );
! 99: void *_Cdecl farmalloc( unsigned long nbytes );
! 100: # else
! 101: # include <alloc.h>
! 102: # endif
! 103: # else /* MSC or DJGPP */
! 104: # include <malloc.h>
! 105: # endif
! 106: #endif
! 107:
! 108: #ifdef AMIGA
! 109: # define OS_CODE 0x01
! 110: #endif
! 111:
! 112: #if defined(VAXC) || defined(VMS)
! 113: # define OS_CODE 0x02
! 114: # define F_OPEN(name, mode) \
! 115: fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
! 116: #endif
! 117:
! 118: #if defined(ATARI) || defined(atarist)
! 119: # define OS_CODE 0x05
! 120: #endif
! 121:
! 122: #ifdef OS2
! 123: # define OS_CODE 0x06
! 124: # ifdef M_I86
! 125: #include <malloc.h>
! 126: # endif
! 127: #endif
! 128:
! 129: #if defined(MACOS) || defined(TARGET_OS_MAC)
! 130: # define OS_CODE 0x07
! 131: # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
! 132: # include <unix.h> /* for fdopen */
! 133: # else
! 134: # ifndef fdopen
! 135: # define fdopen(fd,mode) NULL /* No fdopen() */
! 136: # endif
! 137: # endif
! 138: #endif
! 139:
! 140: #ifdef TOPS20
! 141: # define OS_CODE 0x0a
! 142: #endif
! 143:
! 144: #ifdef WIN32
! 145: # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
! 146: # define OS_CODE 0x0b
! 147: # endif
! 148: #endif
! 149:
! 150: #ifdef __50SERIES /* Prime/PRIMOS */
! 151: # define OS_CODE 0x0f
! 152: #endif
! 153:
! 154: #if defined(_BEOS_) || defined(RISCOS)
! 155: # define fdopen(fd,mode) NULL /* No fdopen() */
! 156: #endif
! 157:
! 158: #if (defined(_MSC_VER) && (_MSC_VER > 600))
! 159: # if defined(_WIN32_WCE)
! 160: # define fdopen(fd,mode) NULL /* No fdopen() */
! 161: # ifndef _PTRDIFF_T_DEFINED
! 162: typedef int ptrdiff_t;
! 163: # define _PTRDIFF_T_DEFINED
! 164: # endif
! 165: # else
! 166: # define fdopen(fd,type) _fdopen(fd,type)
! 167: # endif
! 168: #endif
! 169:
! 170: /* common defaults */
! 171:
! 172: #ifndef OS_CODE
! 173: # define OS_CODE 0x03 /* assume Unix */
! 174: #endif
! 175:
! 176: #ifndef F_OPEN
! 177: # define F_OPEN(name, mode) fopen((name), (mode))
! 178: #endif
! 179:
! 180: /* functions */
! 181:
! 182: #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
! 183: # ifndef HAVE_VSNPRINTF
! 184: # define HAVE_VSNPRINTF
! 185: # endif
! 186: #endif
! 187: #if defined(__CYGWIN__)
! 188: # ifndef HAVE_VSNPRINTF
! 189: # define HAVE_VSNPRINTF
! 190: # endif
! 191: #endif
! 192: #ifndef HAVE_VSNPRINTF
! 193: # ifdef MSDOS
! 194: /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
! 195: but for now we just assume it doesn't. */
! 196: # define NO_vsnprintf
! 197: # endif
! 198: # ifdef __TURBOC__
! 199: # define NO_vsnprintf
! 200: # endif
! 201: # ifdef WIN32
! 202: /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
! 203: # if !defined(vsnprintf) && !defined(NO_vsnprintf)
! 204: # define vsnprintf _vsnprintf
! 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: extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
! 240: extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
! 241: extern void zmemzero OF((Bytef* dest, uInt len));
! 242: #endif
! 243:
! 244: /* Diagnostic functions */
! 245: #ifdef DEBUG_LIBZ
! 246: # include <stdio.h>
! 247: extern int z_verbose;
! 248: extern void 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 zcalloc OF((voidpf opaque, unsigned items, unsigned size));
! 266: void zcfree OF((voidpf opaque, voidpf ptr));
! 267:
! 268: #define ZALLOC(strm, items, size) \
! 269: (*((strm)->zalloc))((strm)->opaque, (items), (size))
! 270: #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
! 271: #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
! 272:
! 273: #endif /* ZUTIL_H */
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