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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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
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