// $Id: zutil.h 751 2006-03-31 15:43:49Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Xara LX (see the file GPL in the root directory of the distribution); if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ADDITIONAL RIGHTS ----------------- Conditional upon your continuing compliance with the GNU General Public License described above, Xara Group Ltd grants to you certain additional rights. The additional rights are to use, modify, and distribute the software together with the wxWidgets library, the wxXtra library, and the "CDraw" library and any other such library that any version of Xara LX relased by Xara Group Ltd requires in order to compile and execute, including the static linking of that library to XaraLX. In the case of the "CDraw" library, you may satisfy obligation under the GNU General Public License to provide source code by providing a binary copy of the library concerned and a copy of the license accompanying it. Nothing in this section restricts any of the rights you have under the GNU General Public License. SCOPE OF LICENSE ---------------- This license applies to this program (XaraLX) and its constituent source files only, and does not necessarily apply to other Xara products which may in part share the same code base, and are subject to their own licensing terms. This license does not apply to files in the wxXtra directory, which are built into a separate library, and are subject to the wxWindows license contained within that directory in the file "WXXTRA-LICENSE". This license does not apply to the binary libraries (if any) within the "libs" directory, which are subject to a separate license contained within that directory in the file "LIBS-LICENSE". ARRANGEMENTS FOR CONTRIBUTION OF MODIFICATIONS ---------------------------------------------- Subject to the terms of the GNU Public License (see above), you are free to do whatever you like with your modifications. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // This class contains all the file deflating code #ifndef INC_ZIPUTIL #define INC_ZIPUTIL // Our mapping for our classes onto the equivalents //#define z_stream ZStream //#define gz_stream GZipStream //#define deflate_state DeflateState /* The 'zlib' compression library provides in-memory compression and decompression functions, including integrity checks of the uncompressed data. This version of the library supports only one compression method (deflation) but other algorithms may be added later and will have the same stream interface. For compression the application must provide the output buffer and may optionally provide the input buffer for optimization. For decompression, the application must provide the input buffer and may optionally provide the output buffer for optimization. Compression can be done in a single step if the buffers are large enough (for example if an input file is mmap'ed), or can be done by repeated calls of the compression function. In the latter case, the application must provide more input and/or consume the output (providing more output space) before each call. The library does not install any signal handler. It is recommended to add at least a handler for SIGSEGV when decompressing; the library checks the consistency of the input data whenever possible but may go nuts for some forms of corrupted input. */ #include // For the PNG stuff, change references to z_stream to ZStream #define ZStream z_stream // Should really be this but version 1.1 Camelot does not seem to like different version numbers //#define ZLIB_VERSION "1.0" #define ZLIB_VERSION "0.92" #define ZLIB_VERSIONNO 0.92 // We will put the real version number in these new variables. #define ZLIB_MAJOR_VERSIONNO 0 #define ZLIB_MINOR_VERSIONNO 99 //extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */ /* (size given to avoid silly warnings with Visual C++) */ typedef void FAR *voidpf; typedef void *voidp; typedef unsigned char Byte; /* 8 bits */ typedef UINT32 uInt; /* 16 bits or more */ typedef UINT32 uLong; /* 32 bits or more */ typedef Byte FAR Bytef; typedef char FAR charf; typedef INT32 FAR intf; typedef uInt FAR uIntf; typedef uLong FAR uLongf; #define ERR_MSG(err) (char*)z_errmsg[Z_NEED_DICT-(err)] //#define ERR_RETURN(strm,err) return (strm->msg = ERR_MSG(err), (err)) /* To be used only when the state is known to be valid */ // My old form //#define ERR_RETURN(strm,err) return (strm->msg = GZipFile::z_errmsg[Z_NEED_DICT-(err)], err) ///* To be used only when the state is known to be valid */ #define ERR_RETURN(strm,err) return (err) //------------------------------------------------------------------------------------------- // Constants from file zconf.h //------------------------------------------------------------------------------------------- /* common constants */ #define DEFLATED 8 #define DEF_WBITS 15 /* default windowBits for decompression. MAX_WBITS is for compression only */ /* * Compile with -DMAXSEG_64K if the alloc function cannot allocate more * than 64k bytes at a time (needed on systems with 16-bit INT32). */ //# define __32BIT__ //# define MAXSEG_64K /* The memory requirements for deflate are (in bytes): 1 << (windowBits+2) + 1 << (memLevel+9) that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) plus a few kilobytes for small objects. For example, if you want to reduce the default memory requirements from 256K to 128K, compile with make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" Of course this will generally degrade compression (there's no free lunch). The memory requirements for inflate are (in bytes) 1 << windowBits that is, 32K for windowBits=15 (default value) plus a few kilobytes for small objects. */ /* Maximum value for memLevel in deflateInit2 */ #define MAX_MEM_LEVEL 9 /* Maximum value for windowBits in deflateInit2 and inflateInit2 */ #define MAX_WBITS 15 /* 32K LZ77 window */ //------------------------------------------------------------------------------------------- // Constants from file zutil.h //------------------------------------------------------------------------------------------- #if MAX_MEM_LEVEL >= 8 # define DEF_MEM_LEVEL 8 #else # define DEF_MEM_LEVEL MAX_MEM_LEVEL #endif /* default memLevel */ #define STORED_BLOCK 0 #define STATIC_TREES 1 #define DYN_TREES 2 /* The three kinds of block type */ #define MIN_MATCH 3 #define MAX_MATCH 258 /* The minimum and maximum match lengths */ #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ typedef unsigned char uch; typedef uch FAR uchf; typedef unsigned short ush; typedef ush FAR ushf; typedef UINT32 ulg; //------------------------------------------------------------------------------------------- // Constants from file zlib.h //------------------------------------------------------------------------------------------- /* constants */ #define Z_NO_FLUSH 0 #define Z_PARTIAL_FLUSH 1 #define Z_SYNC_FLUSH 2 #define Z_FULL_FLUSH 3 #define Z_FINISH 4 /* Allowed flush values; see deflate() below for details */ #define Z_OK 0 #define Z_STREAM_END 1 #define Z_NEED_DICT 2 #define Z_ERRNO (-1) #define Z_STREAM_ERROR (-2) #define Z_DATA_ERROR (-3) #define Z_MEM_ERROR (-4) #define Z_BUF_ERROR (-5) #define Z_VERSION_ERROR (-6) // This is our special no compressed section found error #define Z_UNCOMPRESSED_ERROR (-7) /* Return codes for the compression/decompression functions. Negative * values are errors, positive values are used for special but normal events. */ #define Z_NO_COMPRESSION 0 #define Z_BEST_SPEED 1 #define Z_BEST_COMPRESSION 9 #define Z_DEFAULT_COMPRESSION (-1) /* compression levels */ #define Z_FILTERED 1 #define Z_HUFFMAN_ONLY 2 #define Z_DEFAULT_STRATEGY 0 /* compression strategy; see deflateInit2() below for details */ #define Z_BINARY 0 #define Z_ASCII 1 #define Z_UNKNOWN 2 /* Possible values of the data_type field */ #define Z_DEFLATED 8 /* The deflate compression method (the only one supported in this version) */ #define Z_NULL 0 /* for initializing zalloc, zfree, opaque */ //------------------------------------------------------------------------------------------- // Constants from file zutil.h //------------------------------------------------------------------------------------------- /* target dependencies */ /* Windows NT */ #define OS_CODE 0x0b #define zmemcpy memcpy #define zmemcmp memcmp #define zmemzero(dest, len) memset(dest, 0, len) /* Diagnostic functions */ #define _FTPRINTF TRACEUSER( "Neville", _T("%s"),x) //#ifdef _DEBUG // #define DEBUG 1 //#else // #undef DEBUG //#endif #ifdef DEBUG # include # ifndef verbose # define verbose 0 # endif # define Assert(cond,msg) ERROR3IF(!(cond),msg); //{if(!(cond)) z_error(msg);} # define Assert3(msg) ERROR3(msg); //{if(!(cond)) z_error(msg);} # define Trace(x) {TRACEUSER( "Neville", _T("%s"),x); } # define Tracev(x) {if (verbose) TRACEUSER( "Neville", _T("%s"),x) ;} # define Tracevv(x) {if (verbose>1) TRACEUSER( "Neville", _T("%s"),x) ;} # define Tracec(c,x) {if (verbose && (c)) TRACEUSER( "Neville", _T("%s"),x) ;} # define Tracecv(c,x) {if (verbose>1 && (c)) TRACEUSER( "Neville", _T("%s"),x) ;} #else # define Assert(cond,msg) # define Trace(x) # define Tracev(x) # define Tracevv(x) # define Tracec(c,x) # define Tracecv(c,x) #endif typedef uLong (*check_func)(uLong check, const Bytef *buf, uInt len); //extern void z_error(char *m); #define z_error(m) ERROR3(m); //#define ZALLOC(strm, items, size) CCMalloc(size) //#define ZFREE(strm, addr) {CCFree(addr); addr = NULL; } //#define TRY_FREE(s, p) {if (p) ZFREE(s, p)} #define ZALLOC(strm, items, size) \ (*((strm)->zalloc))((strm)->opaque, (items), (size)) #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (void*)(addr)) #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} #endif // INC_ZIPUTIL