hxstat.cpp
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:9k
- /* ***** 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 ***** */
- #include "hlxclib/stdio.h"
- #include "hlxclib/stdarg.h"
- #include "hlxclib/string.h" // memchr
- #include "hxresult.h"
- #include "hxtypes.h"
- #include "hxstat.h"
-
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- #include "hlxclib/fcntl.h" // O_CREAT | O_APPEND
- HXStatLog::HXStatLog() :
- mStatFile (0)
- , mStatBuffer (0)
- , mStatCurrentPosition (0)
- , mStatBufferLength (0)
- , mStatBytesLeft (0)
- {
- }
- HXStatLog::~HXStatLog()
- {
- if (mStatFile)
- {
- mStatFile->Close();
- delete mStatFile;
- mStatFile = NULL;
- }
- if (mStatBuffer)
- {
- delete [] mStatBuffer;
- mStatBuffer = NULL;
- }
- }
- HX_RESULT HXStatLog::Open_Write (const char * filepath)
- {
- HX_RESULT theErr = HXR_OK;
- if (mStatFile)
- return HXR_ALREADY_OPEN; //HX_ALREADY_OPEN;
- mStatFile = CHXDataFile::Construct();
- if (!mStatFile)
- theErr = HXR_OUTOFMEMORY;
- if (!theErr)
- {
- // Open file in Text format...
- // (setting last variable TRUE opens file in text format)
- theErr = mStatFile->Open(filepath, O_RDWR | O_CREAT | O_APPEND, TRUE);
- }
- if (theErr && mStatFile)
- {
- mStatFile->Close();
- delete mStatFile;
- mStatFile = NULL;
- }
- return theErr;
- }
- HX_RESULT HXStatLog::Open_WriteNoAppend (const char * filepath)
- {
- HX_RESULT theErr = HXR_OK;
- if (mStatFile)
- return HXR_ALREADY_OPEN; //HX_ALREADY_OPEN;
- mStatFile = CHXDataFile::Construct();
- if (!mStatFile)
- theErr = HXR_OUTOFMEMORY;
- if (!theErr)
- {
- // Open file in Text format...
- // (setting last variable TRUE opens file in text format)
- theErr = mStatFile->Open(filepath, O_RDWR | O_CREAT | O_TRUNC, TRUE);
- }
- if (theErr && mStatFile)
- {
- mStatFile->Close();
- delete mStatFile;
- mStatFile = NULL;
- }
- return theErr;
- }
- HX_RESULT HXStatLog::Open_Read (const char * filepath)
- {
- HX_RESULT theErr = HXR_OK;
- if (mStatFile)
- return HXR_ALREADY_OPEN; //HX_ALREADY_OPEN;
- mStatFile = CHXDataFile::Construct();
- if (!mStatFile)
- theErr = HXR_OUTOFMEMORY;
- if (!theErr)
- {
- // Open file in Text format...
- // (setting last variable TRUE opens file in text format)
- theErr = mStatFile->Open(filepath, O_RDONLY, TRUE);
- }
- if (theErr && mStatFile)
- {
- mStatFile->Close();
- delete mStatFile;
- mStatFile = NULL;
- }
- return theErr;
- }
- HX_RESULT HXStatLog::Close (void)
- {
- HX_RESULT theErr = HXR_OK;
- if (!mStatFile)
- return HXR_INVALID_FILE; //HX_ALREADY_OPEN;
- theErr = mStatFile->Close();
- delete mStatFile;
- mStatFile = NULL;
- return theErr;
- }
- LONG32 HXStatLog::Read (char *buf, ULONG32 buf_length)
- {
- if (!mStatFile || !buf)
- return HXR_INVALID_PATH;
- LONG32 bytes_read = 0;
-
- bytes_read = (LONG32) mStatFile->Read(buf, buf_length);
- return bytes_read;
- }
- LONG32 HXStatLog::Write (char *buf, ULONG32 buf_length)
- {
- if (!mStatFile || !buf)
- return HXR_INVALID_PATH;
- LONG32 bytes_written = 0;
-
- bytes_written = (LONG32) mStatFile->Write(buf, (ULONG32) buf_length);
- return bytes_written;
- }
- HX_RESULT HXStatLog::StatPrintf(const char* fmt, ...)
- {
- if (!mStatFile)
- return HXR_INVALID_PATH;
- HX_RESULT theErr = HXR_OK;
- 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 = mStatFile->Write(buf, (ULONG32) bytes_towrite);
- if (bytes_written != bytes_towrite)
- theErr = HXR_INVALID_PATH;
- }
- return theErr;
- }
-
- #define MAX_STAT_LENGTH 8096
- HX_RESULT HXStatLog::ReadLine(char *buf, ULONG32 buf_length)
- {
- char *newline_loc = NULL;
- if (!mStatFile || !buf)
- return HXR_INVALID_FILE;
- if (!mStatBuffer)
- {
- mStatBuffer = new char [MAX_STAT_LENGTH];
- if (!mStatBuffer)
- return HXR_INVALID_FILE;
- mStatBufferLength = (INT16) mStatFile->Read(mStatBuffer, MAX_STAT_LENGTH);
- mStatBytesLeft = mStatBufferLength;
- mStatCurrentPosition = mStatBuffer;
- }
- #ifdef __MWERKS__
- char eofChar = 'r';
- #else
- char eofChar = 'n';
- #endif
- // check if something is left in the buffer read earlier...
- // if yes try to read line from that buffer...
- if (mStatBytesLeft)
- {
- newline_loc = (char *) memchr(mStatCurrentPosition, eofChar, mStatBufferLength);
- }
- // if newlibe is not found, read more data from file...
- if (!newline_loc)
- {
- char * tmp_config_buf = new char [MAX_STAT_LENGTH];
- if (!tmp_config_buf)
- return HXR_OK;
- memcpy(tmp_config_buf, mStatCurrentPosition, (mStatBytesLeft <= MAX_STAT_LENGTH ? mStatBytesLeft : MAX_STAT_LENGTH));
- mStatBufferLength = (INT16) mStatFile->Read(tmp_config_buf + mStatBytesLeft, MAX_STAT_LENGTH - mStatBytesLeft);
- mStatBufferLength += mStatBytesLeft;
- // update the pointers...
- delete [] mStatBuffer;
- mStatBuffer = tmp_config_buf;
- mStatBytesLeft = mStatBufferLength;
- mStatCurrentPosition = mStatBuffer;
- }
- // if newlibe was not found earlier, try it again now that we have
- // read more data... if it is still not found.. we bail out..
- // limitation: Each line can be a max of MAX_STAT_LENGTH...
- if (!newline_loc && mStatBytesLeft)
- {
- newline_loc = (char *) memchr(mStatCurrentPosition, eofChar, mStatBufferLength);
- }
-
- // extra + 1 is for adding