/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the tools applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ /* archiveextractor.cpp */ #include "archiveextractor.h" QT_BEGIN_NAMESPACE QList<ArchiveExtractor *> ArchiveExtractor::extractors; /*! \class ArchiveExtractor \brief The ArchiveExtractor class is a base class for classes that know how to unpack a certain kind of archive file. The archive extractor contains a list of the filename extensions of the files that the archive extractor knows how to unpack. It maintains a static list of all the instances of ArchiveExtractor that have been created. It also has a static function for searching that list to find the archive extracter for a file with a certain extension. */ /*! The constructor takes a list of filename extensions, which it copies and saves internally. This archive extractor is prepended to the static list. */ ArchiveExtractor::ArchiveExtractor( const QStringList& extensions ) : fileExts( extensions ) { extractors.prepend( this ); } /*! The destructor deletes all the filename extensions. */ ArchiveExtractor::~ArchiveExtractor() { extractors.removeAll( this ); } /*! This function searches the static list of archive extractors to find the first one that can handle \a fileName. If it finds an acceptable extractor, it returns a pointer to it. Otherwise it returns null. */ ArchiveExtractor* ArchiveExtractor::extractorForFileName( const QString& fileName ) { int dot = -1; while ( (dot = fileName.indexOf(QLatin1Char('.'), dot + 1)) != -1 ) { QString ext = fileName.mid( dot + 1 ); QList<ArchiveExtractor *>::ConstIterator e = extractors.begin(); while ( e != extractors.end() ) { if ( (*e)->fileExtensions().contains(ext) ) return *e; ++e; } } return 0; } QT_END_NAMESPACE