hxstat.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _HXSTATLOG_
- #define _HXSTATLOG_
- #ifdef _MACINTOSH
- #include <stdlib.h>
- #endif
- #ifdef _WINDOWS
- #include <stdio.h>
- #endif
- #include "hlxclib/stdarg.h"
- #include "hxresult.h"
- #include "hxtypes.h"
- #include "../fileio/pub/chxdataf.h"
- #ifdef HELIX_CONFIG_NOSTATICS
- # include "globals/hxglobals.h"
- #endif
- class HXStatLog
- {
- public:
- HXStatLog();
- ~HXStatLog();
- HX_RESULT Open_Read (const char * filename);
- HX_RESULT Open_Write (const char * filename);
- HX_RESULT Open_WriteNoAppend (const char * filename);
- HX_RESULT Close (void);
- LONG32 Read (char *buf, ULONG32 max_buf_length);
- LONG32 Write (char *buf, ULONG32 buf_length);
- HX_RESULT StatPrintf (const char* fmt, ...);
- HX_RESULT ReadLine (char *buf, ULONG32 buf_length);
- HX_RESULT Seek (ULONG32 offset, UINT16 fromWhere);
- ULONG32 Tell (void);
- private:
- CHXDataFile* mStatFile;
- char* mStatBuffer;
- char* mStatCurrentPosition;
- INT16 mStatBufferLength;
- INT16 mStatBytesLeft;
- };
- /////
- // This is static implementation of the above class so that
- // the log info can be written from anywahere in the player to the same
- // log file...(opened once for each session)
- /////
- class HXStaticStatLog
- {
- public:
- static HX_RESULT Open_Read(const char* filename)
- {
- if (LogFileInstance()) return HXR_ALREADY_OPEN;
- HX_RESULT theErr = HXR_OK;
- LogFileInstance() = new HXStatLog;
- if (!LogFileInstance())
- theErr = HXR_OUTOFMEMORY;
- if (!theErr)
- {
- theErr = LogFileInstance()->Open_Read(filename);
- }
- // error in opening file?
- if (theErr && LogFileInstance())
- {
- delete LogFileInstance();
- LogFileInstance() = NULL;
- }
- return theErr;
- }
-
- static HX_RESULT Open_Write(const char* filename)
- {
- if (LogFileInstance()) return HXR_ALREADY_OPEN;
- HX_RESULT theErr = HXR_OK;
- LogFileInstance() = new HXStatLog;
- if (!LogFileInstance())
- theErr = HXR_OUTOFMEMORY;
- if (!theErr)
- {
- theErr = LogFileInstance()->Open_Write(filename);
- }
- // error in opening file?
- if (theErr && LogFileInstance())
- {
- delete LogFileInstance();
- LogFileInstance() = NULL;
- }
- return theErr;
- }
-
- static HX_RESULT Close(void)
- {
- if (!LogFileInstance()) return HXR_INVALID_FILE;
- HX_RESULT theErr = HXR_OK;
- theErr = LogFileInstance()->Close();
- delete LogFileInstance();
- LogFileInstance() = NULL;
- return theErr;
- }
-
- static LONG32 Read(char* buf, ULONG32 max_buf_length)
- {
- if (!LogFileInstance()) return -1;
- return LogFileInstance()->Read(buf, max_buf_length);
- }
-
- static LONG32 Write(char* buf, ULONG32 buf_length)
- {
- if (!LogFileInstance()) return -1;
- return LogFileInstance()->Write(buf, buf_length);
- }
-
- static HX_RESULT StatPrintf(const char* fmt, ...)
- {
- if (!LogFileInstance()) return HXR_INVALID_FILE;
-
- HX_RESULT theErr = HXR_OK;
- #ifndef _MACINTOSH
- char buf[8096]; /* Flawfinder: ignore */
- LONG32 bytes_written = 0;
- LONG32 bytes_towrite = 0;
- va_list args;
- va_start(args, fmt);
- bytes_towrite = vsnprintf(buf, sizeof(buf), fmt, args); // scanf
- va_end(args);
- if (bytes_towrite < 0)
- theErr = HXR_INVALID_PATH;
- if (!theErr)
- {
- bytes_written = LogFileInstance()->Write(buf, (ULONG32) bytes_towrite);
- if (bytes_written != bytes_towrite)
- theErr = HXR_INVALID_PATH;
- }
- #endif
- return theErr;
- }
-
- static HX_RESULT ReadLine (char *buf, ULONG32 buf_length)
- {
- if (!LogFileInstance()) return HXR_INVALID_FILE;
- return LogFileInstance()->ReadLine(buf, buf_length);
- }
-
- static HX_RESULT Seek (ULONG32 offset, UINT16 fromWhere)
- {
- if (!LogFileInstance()) return HXR_INVALID_FILE;
- return LogFileInstance()->Seek(offset, fromWhere);
- }
-
- static ULONG32 Tell (void)
- {
- if (!LogFileInstance()) return (ULONG32) -1;
- return LogFileInstance()->Tell();
- }
-
- static inline HXStatLog*& LogFileInstance()
- {
- #if defined(HELIX_CONFIG_NOSTATICS)
- static const HXStatLog* const pmLogFile = NULL;
- return (HXStatLog*&)HXGlobalPtr::Get(&pmLogFile, NULL );
- #else
- static HXStatLog* pmLogFile = NULL;
- return pmLogFile;
- #endif
- }
- };
- #endif //_HXSTATLOG_