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/*
This file is part of KMail.
Copyright (c) 2003 Andreas Gungl <[email protected]>
KMail 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.
KMail is 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, the copyright holders give
permission to link the code of this program with any edition of
the Qt library by Trolltech AS, Norway (or with modified versions
of Qt that use the same license as Qt), and distribute linked
combinations including the two. You must obey the GNU General
Public License in all respects for all of the code used other than
Qt. If you modify this file, you may extend this exception to
your version of the file, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from
your version.
*/
#include "filterlog.h"
#include <kdebug.h>
#include <qdatetime.h>
#include <qfile.h>
#include <sys/stat.h>
using namespace KMail;
FilterLog * FilterLog::mSelf = NULL;
FilterLog::FilterLog()
{
mSelf = this;
// start with logging disabled by default
mLogging = false;
// better limit the log to 512 KByte to avoid out of memory situations
// when the log i sgoing to become very long
mMaxLogSize = 512 * 1024;
mCurrentLogSize = 0;
mAllowedTypes = meta | patternDesc | ruleResult |
patternResult | appliedAction;
}
FilterLog::~FilterLog()
{}
FilterLog * FilterLog::instance()
{
if ( !mSelf ) mSelf = new FilterLog();
return mSelf;
}
void FilterLog::add( QString logEntry, ContentType contentType )
{
if ( isLogging() && ( mAllowedTypes & contentType ) )
{
QString timedLog = "[" + QTime::currentTime().toString() + "] ";
if ( contentType & ~meta )
timedLog += logEntry;
else
timedLog = logEntry;
mLogEntries.append( timedLog );
emit logEntryAdded( timedLog );
mCurrentLogSize += timedLog.length();
checkLogSize();
}
}
void FilterLog::setMaxLogSize( long size )
{
if ( size < -1)
size = -1;
// do not allow less than 1 KByte except unlimited (-1)
if ( size >= 0 && size < 1024 )
size = 1024;
mMaxLogSize = size;
emit logStateChanged();
checkLogSize();
}
void FilterLog::dump()
{
#ifndef NDEBUG
kdDebug(5006) << "----- starting filter log -----" << endl;
for ( QStringList::Iterator it = mLogEntries.begin();
it != mLogEntries.end(); ++it )
{
kdDebug(5006) << *it << endl;
}
kdDebug(5006) << "------ end of filter log ------" << endl;
#endif
}
void FilterLog::checkLogSize()
{
if ( mCurrentLogSize > mMaxLogSize && mMaxLogSize > -1 )
{
kdDebug(5006) << "Filter log: memory limit reached, starting to discard old items, size = "
<< QString::number( mCurrentLogSize ) << endl;
// avoid some kind of hysteresis, shrink the log to 90% of its maximum
while ( mCurrentLogSize > ( mMaxLogSize * 0.9 ) )
{
QValueListIterator<QString> it = mLogEntries.begin();
if ( it != mLogEntries.end())
{
mCurrentLogSize -= (*it).length();
mLogEntries.remove( it );
kdDebug(5006) << "Filter log: new size = "
<< QString::number( mCurrentLogSize ) << endl;
}
else
{
kdDebug(5006) << "Filter log: size reduction disaster!" << endl;
clear();
}
}
emit logShrinked();
}
}
bool FilterLog::saveToFile( QString fileName )
{
QFile file( fileName );
if( file.open( IO_WriteOnly ) ) {
fchmod( file.handle(), S_IRUSR | S_IWUSR );
{
QDataStream ds( &file );
for ( QStringList::Iterator it = mLogEntries.begin();
it != mLogEntries.end(); ++it )
{
QString tmpString = *it + '\n';
QCString cstr( tmpString.local8Bit() );
ds.writeRawBytes( cstr, cstr.size() );
}
}
return true;
}
else
return false;
}
#include "filterlog.moc"
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