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475e688ff8
see the following commit in kdelibs: c4ae9e046090e31201dfb1c7cfd2dc406aaf45c0 Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
124 lines
3.2 KiB
C++
124 lines
3.2 KiB
C++
/*
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This file is part of the KDE project
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Copyright (C) 2009 Tobias Koenig <tokoe@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "trashsizecache.h"
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#include "discspaceutil.h"
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#include <kconfig.h>
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#include <kconfiggroup.h>
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#include <klockfile.h>
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#include <kglobal.h>
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#include <kstandarddirs.h>
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#include <QtCore/QDir>
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static QString s_trahslockname = QString::fromLatin1( "trash" );
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TrashSizeCache::TrashSizeCache( const QString &path )
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: mTrashSizeCachePath( path + QDir::separator() + QString::fromLatin1( "metadata" ) ),
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mTrashPath( path ),
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mTrashSizeGroup( QLatin1String( "Cached" ) ),
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mTrashSizeKey( QLatin1String( "Size" ) )
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{
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}
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void TrashSizeCache::initialize()
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{
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// we call just currentSize here, as it does the initialization for us
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currentSize( true );
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}
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void TrashSizeCache::add( qulonglong value )
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{
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KLockFile lock( s_trahslockname );
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lock.lock();
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KConfig config( mTrashSizeCachePath );
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KConfigGroup group = config.group( mTrashSizeGroup );
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qulonglong size = currentSize( false );
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size += value;
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group.writeEntry( mTrashSizeKey, size );
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config.sync();
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}
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void TrashSizeCache::remove( qulonglong value )
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{
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KLockFile lock( s_trahslockname );
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lock.lock();
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KConfig config( mTrashSizeCachePath );
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KConfigGroup group = config.group( mTrashSizeGroup );
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qulonglong size = currentSize( false );
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size -= value;
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group.writeEntry( mTrashSizeKey, size );
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config.sync();
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}
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void TrashSizeCache::clear()
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{
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KLockFile lock( s_trahslockname );
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lock.lock();
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KConfig config( mTrashSizeCachePath );
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KConfigGroup group = config.group( mTrashSizeGroup );
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group.writeEntry( mTrashSizeKey, (qulonglong)0 );
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config.sync();
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}
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qulonglong TrashSizeCache::size() const
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{
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return currentSize( true );
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}
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qulonglong TrashSizeCache::currentSize( bool doLocking ) const
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{
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KLockFile lock( s_trahslockname );
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if ( doLocking ) {
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lock.lock();
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}
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KConfig config( mTrashSizeCachePath );
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KConfigGroup group = config.group( mTrashSizeGroup );
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if ( !group.hasKey( mTrashSizeKey ) ) {
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// For the first call to the trash size cache, we have to calculate
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// the current size.
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const qulonglong size = DiscSpaceUtil::sizeOfPath( mTrashPath + QString::fromLatin1( "/files/" ) );
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group.writeEntry( mTrashSizeKey, size );
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config.sync();
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}
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const qulonglong value = group.readEntry( mTrashSizeKey, (qulonglong)0 );
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if ( doLocking ) {
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lock.unlock();
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}
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return value;
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}
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