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/* zutil.h -- internal interface and configuration of the compression library |
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* Copyright (C) 1995-2010 Jean-loup Gailly. |
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* For conditions of distribution and use, see copyright notice in zlib.h |
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*/ |
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|
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/* WARNING: this file should *not* be used by applications. It is |
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part of the implementation of the compression library and is |
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subject to change. Applications should only use zlib.h. |
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*/ |
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|
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/* @(#) $Id$ */ |
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|
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#ifndef ZUTIL_H |
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#define ZUTIL_H |
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|
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#define ZLIB_INTERNAL |
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#include "zlib.h" |
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|
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#ifdef STDC |
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# if !(defined(_WIN32_WCE) && defined(_MSC_VER)) |
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# include <stddef.h> |
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# endif |
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# include <string.h> |
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# include <stdlib.h> |
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#endif |
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|
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#if defined(UNDER_CE) && defined(NO_ERRNO_H) |
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# define zseterrno(ERR) SetLastError((DWORD)(ERR)) |
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# define zerrno() ((int)GetLastError()) |
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#else |
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# ifdef NO_ERRNO_H |
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extern int errno; |
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# else |
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# include <errno.h> |
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# endif |
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# define zseterrno(ERR) do { errno = (ERR); } while (0) |
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# define zerrno() errno |
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#endif |
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|
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#ifndef local |
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# define local static |
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#endif |
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/* compile with -Dlocal if your debugger can't find static symbols */ |
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|
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typedef unsigned char uch; |
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typedef uch FAR uchf; |
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typedef unsigned short ush; |
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typedef ush FAR ushf; |
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typedef unsigned long ulg; |
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|
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extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
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/* (size given to avoid silly warnings with Visual C++) */ |
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|
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#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
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|
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#define ERR_RETURN(strm,err) \ |
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return (strm->msg = (char*)ERR_MSG(err), (err)) |
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/* To be used only when the state is known to be valid */ |
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|
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/* common constants */ |
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|
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#ifndef DEF_WBITS |
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# define DEF_WBITS MAX_WBITS |
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#endif |
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/* default windowBits for decompression. MAX_WBITS is for compression only */ |
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|
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#if MAX_MEM_LEVEL >= 8 |
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# define DEF_MEM_LEVEL 8 |
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#else |
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# define DEF_MEM_LEVEL MAX_MEM_LEVEL |
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#endif |
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/* default memLevel */ |
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|
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#define STORED_BLOCK 0 |
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#define STATIC_TREES 1 |
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#define DYN_TREES 2 |
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/* The three kinds of block type */ |
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|
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#define MIN_MATCH 3 |
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#define MAX_MATCH 258 |
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/* The minimum and maximum match lengths */ |
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|
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#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
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|
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/* target dependencies */ |
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|
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#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
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# define OS_CODE 0x00 |
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# if defined(__TURBOC__) || defined(__BORLANDC__) |
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# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
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/* Allow compilation with ANSI keywords only enabled */ |
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void _Cdecl farfree( void *block ); |
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void *_Cdecl farmalloc( unsigned long nbytes ); |
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# else |
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# include <alloc.h> |
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# endif |
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# else /* MSC or DJGPP */ |
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# include <malloc.h> |
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# endif |
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#endif |
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|
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#ifdef AMIGA |
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# define OS_CODE 0x01 |
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#endif |
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|
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#if defined(VAXC) || defined(VMS) |
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# define OS_CODE 0x02 |
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# define F_OPEN(name, mode) \ |
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fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
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#endif |
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|
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#if defined(ATARI) || defined(atarist) |
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# define OS_CODE 0x05 |
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#endif |
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|
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#ifdef OS2 |
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# define OS_CODE 0x06 |
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# ifdef M_I86 |
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# include <malloc.h> |
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# endif |
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#endif |
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|
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#if defined(MACOS) || defined(TARGET_OS_MAC) |
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# define OS_CODE 0x07 |
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# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
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# include <unix.h> /* for fdopen */ |
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# else |
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# ifndef fdopen |
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# define fdopen(fd,mode) NULL /* No fdopen() */ |
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# endif |
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# endif |
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#endif |
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|
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#ifdef TOPS20 |
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# define OS_CODE 0x0a |
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#endif |
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|
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#ifdef WIN32 |
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# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ |
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# define OS_CODE 0x0b |
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# endif |
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#endif |
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|
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#ifdef __50SERIES /* Prime/PRIMOS */ |
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# define OS_CODE 0x0f |
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#endif |
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|
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#if defined(_BEOS_) || defined(RISCOS) |
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# define fdopen(fd,mode) NULL /* No fdopen() */ |
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#endif |
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|
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#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX |
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# if defined(_WIN32_WCE) |
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# define fdopen(fd,mode) NULL /* No fdopen() */ |
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# ifndef _PTRDIFF_T_DEFINED |
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typedef int ptrdiff_t; |
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# define _PTRDIFF_T_DEFINED |
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# endif |
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# else |
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# define fdopen(fd,type) _fdopen(fd,type) |
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# endif |
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#endif |
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|
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#if defined(__BORLANDC__) |
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#pragma warn -8004 |
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#pragma warn -8008 |
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#pragma warn -8066 |
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#endif |
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|
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#ifdef _LARGEFILE64_SOURCE |
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# define z_off64_t off64_t |
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#else |
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# define z_off64_t z_off_t |
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#endif |
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|
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/* common defaults */ |
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|
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#ifndef OS_CODE |
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# define OS_CODE 0x03 /* assume Unix */ |
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#endif |
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|
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#ifndef F_OPEN |
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# define F_OPEN(name, mode) fopen((name), (mode)) |
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#endif |
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|
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#ifdef _LARGEFILE64_SOURCE |
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# define F_OPEN64(name, mode) fopen64((name), (mode)) |
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#else |
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# define F_OPEN64(name, mode) fopen((name), (mode)) |
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#endif |
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|
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/* functions */ |
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|
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#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) |
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# ifndef HAVE_VSNPRINTF |
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# define HAVE_VSNPRINTF |
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# endif |
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#endif |
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#if defined(__CYGWIN__) |
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# ifndef HAVE_VSNPRINTF |
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# define HAVE_VSNPRINTF |
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# endif |
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#endif |
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#ifndef HAVE_VSNPRINTF |
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# ifdef MSDOS |
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/* vsnprintf may exist on some MS-DOS compilers (DJGPP?), |
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but for now we just assume it doesn't. */ |
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# define NO_vsnprintf |
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# endif |
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# ifdef __TURBOC__ |
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# define NO_vsnprintf |
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# endif |
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# ifdef WIN32 |
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/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ |
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# if !defined(vsnprintf) && !defined(NO_vsnprintf) |
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# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) |
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# define vsnprintf _vsnprintf |
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# endif |
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# endif |
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# endif |
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# ifdef __SASC |
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# define NO_vsnprintf |
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# endif |
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#endif |
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#ifdef VMS |
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# define NO_vsnprintf |
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#endif |
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|
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#if defined(pyr) |
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# define NO_MEMCPY |
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#endif |
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#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
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/* Use our own functions for small and medium model with MSC <= 5.0. |
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* You may have to use the same strategy for Borland C (untested). |
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* The __SC__ check is for Symantec. |
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*/ |
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# define NO_MEMCPY |
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#endif |
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#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
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# define HAVE_MEMCPY |
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#endif |
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#ifdef HAVE_MEMCPY |
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# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
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# define zmemcpy _fmemcpy |
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# define zmemcmp _fmemcmp |
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# define zmemzero(dest, len) _fmemset(dest, 0, len) |
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# else |
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# define zmemcpy memcpy |
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# define zmemcmp memcmp |
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# define zmemzero(dest, len) memset(dest, 0, len) |
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# endif |
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#else |
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extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
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extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
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extern void zmemzero OF((Bytef* dest, uInt len)); |
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#endif |
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|
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/* Diagnostic functions */ |
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#ifdef DEBUG |
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# include <stdio.h> |
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extern int z_verbose; |
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extern void z_error OF((char *m)); |
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# define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
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# define Trace(x) {if (z_verbose>=0) fprintf x ;} |
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# define Tracev(x) {if (z_verbose>0) fprintf x ;} |
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# define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
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# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
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# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
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#else |
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# define Assert(cond,msg) |
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# define Trace(x) |
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# define Tracev(x) |
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# define Tracevv(x) |
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# define Tracec(c,x) |
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# define Tracecv(c,x) |
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#endif |
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|
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|
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voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); |
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void zcfree OF((voidpf opaque, voidpf ptr)); |
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|
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#define ZALLOC(strm, items, size) \ |
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(*((strm)->zalloc))((strm)->opaque, (items), (size)) |
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#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
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#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
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|
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#endif /* ZUTIL_H */ |
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