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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qm3uhandler.h"
#include <qmediaresource.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qfileinfo.h>
#include <QtCore/qtextstream.h>
#include <QFile>
#include <QUrl>
class QM3uPlaylistReader : public QMediaPlaylistReader
{
public:
QM3uPlaylistReader(QIODevice *device)
:m_ownDevice(false), m_device(device), m_textStream(new QTextStream(m_device))
{
readItem();
}
QM3uPlaylistReader(const QUrl& location)
:m_location(location), m_ownDevice(true)
{
QFile *f = new QFile(location.toLocalFile());
if (f->open(QIODevice::ReadOnly | QIODevice::Text)) {
m_device = f;
m_textStream = new QTextStream(m_device);
readItem();
} else {
delete f;
m_device = 0;
m_textStream = 0;
}
}
virtual ~QM3uPlaylistReader()
{
if (m_ownDevice) {
delete m_device;
}
delete m_textStream;
}
virtual bool atEnd() const
{
//we can't just use m_textStream->atEnd(),
//for files with empty lines/comments at end
return nextResource.isNull();
}
virtual QMediaContent readItem()
{
QMediaContent item;
if (!nextResource.isNull())
item = QMediaContent(nextResource);
nextResource = QMediaContent();
while (m_textStream && !m_textStream->atEnd()) {
QString line = m_textStream->readLine().trimmed();
if (line.isEmpty() || line[0] == '#' || line.size() > 4096)
continue;
QUrl fileUrl = QUrl::fromLocalFile(line);
QUrl url(line);
//m3u may contain url encoded entries or absolute/relative file names
//prefer existing file if any
QList<QUrl> candidates;
if (!m_location.isEmpty()) {
candidates << m_location.resolved(fileUrl);
candidates << m_location.resolved(url);
}
candidates << fileUrl;
candidates << url;
foreach (const QUrl &candidate, candidates) {
if (QFile::exists(candidate.toLocalFile())) {
nextResource = candidate;
break;
}
}
if (nextResource.isNull()) {
//assume the relative urls are file names, not encoded urls if m3u is local file
if (!m_location.isEmpty() && url.isRelative()) {
if (m_location.scheme() == QLatin1String("file"))
nextResource = m_location.resolved(fileUrl);
else
nextResource = m_location.resolved(url);
} else {
nextResource = QMediaContent(QUrl::fromUserInput(line));
}
}
break;
}
return item;
}
virtual void close()
{
}
private:
QUrl m_location;
bool m_ownDevice;
QIODevice *m_device;
QTextStream *m_textStream;
QMediaContent nextResource;
};
class QM3uPlaylistWriter : public QMediaPlaylistWriter
{
public:
QM3uPlaylistWriter(QIODevice *device)
:m_device(device), m_textStream(new QTextStream(m_device))
{
}
virtual ~QM3uPlaylistWriter()
{
delete m_textStream;
}
virtual bool writeItem(const QMediaContent& item)
{
*m_textStream << item.canonicalUrl().toString() << endl;
return true;
}
virtual void close()
{
}
private:
QIODevice *m_device;
QTextStream *m_textStream;
};
QM3uPlaylistPlugin::QM3uPlaylistPlugin(QObject *parent)
:QMediaPlaylistIOPlugin(parent)
{
}
QM3uPlaylistPlugin::~QM3uPlaylistPlugin()
{
}
bool QM3uPlaylistPlugin::canRead(QIODevice *device, const QByteArray &format) const
{
return device->isReadable() && (format == "m3u" || format.isEmpty());
}
bool QM3uPlaylistPlugin::canRead(const QUrl& location, const QByteArray &format) const
{
if (!QFileInfo(location.toLocalFile()).isReadable())
return false;
if (format == "m3u")
return true;
if (!format.isEmpty())
return false;
else
return location.toLocalFile().toLower().endsWith(QLatin1String("m3u"));
}
bool QM3uPlaylistPlugin::canWrite(QIODevice *device, const QByteArray &format) const
{
return device->isOpen() && device->isWritable() && format == "m3u";
}
QStringList QM3uPlaylistPlugin::keys() const
{
return QStringList() << QLatin1String("m3u");
}
QMediaPlaylistReader *QM3uPlaylistPlugin::createReader(QIODevice *device, const QByteArray &format)
{
Q_UNUSED(format);
return new QM3uPlaylistReader(device);
}
QMediaPlaylistReader *QM3uPlaylistPlugin::createReader(const QUrl& location, const QByteArray &format)
{
Q_UNUSED(format);
return new QM3uPlaylistReader(location);
}
QMediaPlaylistWriter *QM3uPlaylistPlugin::createWriter(QIODevice *device, const QByteArray &format)
{
Q_UNUSED(format);
return new QM3uPlaylistWriter(device);
}
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