Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 165 insertions, 0 deletions

diff --git a/kmail/filterlog.cpp b/kmail/filterlog.cpp
new file mode 100644
index 00000000..23848dfb
--- /dev/null
+++ b/kmail/filterlog.cpp
@@ -0,0 +1,165 @@
+/*
+    This file is part of KMail.
+    Copyright (c) 2003 Andreas Gungl <a.gungl@gmx.de>
+
+    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"