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    41 

    42 #include "qm3uhandler.h"

    43 #include <qmediaresource.h>

    44 #include <QtCore/qiodevice.h>

    45 #include <QtCore/qfileinfo.h>

    46 #include <QtCore/qtextstream.h>

    47 #include <QFile>

    48 #include <QUrl>

    49 

    50 

    51 class QM3uPlaylistReader : public QMediaPlaylistReader

    52 {

    53 public:

    54     QM3uPlaylistReader(QIODevice *device)

    55         :m_ownDevice(false), m_device(device), m_textStream(new QTextStream(m_device))

    56     {

    57         readItem();

    58     }

    59 

    60     QM3uPlaylistReader(const QUrl& location)

    61         :m_ownDevice(true)

    62     {

    63         QFile *f = new QFile(location.toLocalFile());

    64         if (f->open(QIODevice::ReadOnly | QIODevice::Text)) {

    65             m_device = f;

    66             m_textStream = new QTextStream(m_device);

    67             readItem();

    68         } else {

    69             delete f;

    70             m_device = 0;

    71             m_textStream = 0;

    72         }

    73     }

    74 

    75     virtual ~QM3uPlaylistReader()

    76     {

    77         if (m_ownDevice) {

    78             delete m_device;

    79         }

    80         delete m_textStream;

    81     }

    82 

    83     virtual bool atEnd() const

    84     {

    85         //we can't just use m_textStream->atEnd(),

    86         //for files with empty lines/comments at end

    87         return nextResource.isNull();

    88     }

    89 

    90     virtual QMediaContent readItem()

    91     {

    92         QMediaContent item;

    93         if (!nextResource.isNull())

    94         item = QMediaContent(nextResource);

    95 

    96         nextResource = QMediaContent();

    97 

    98         while (m_textStream && !m_textStream->atEnd()) {

    99             QString line = m_textStream->readLine();

   100             if (line.isEmpty() || line[0] == '#')

   101                 continue;

   102 

   103             nextResource = QMediaContent(QUrl(line));

   104             break;

   105         }

   106 

   107         return item;

   108     }

   109 

   110     virtual void close()

   111     {

   112     }

   113 

   114 private:

   115     bool m_ownDevice;

   116     QIODevice *m_device;

   117     QTextStream *m_textStream;

   118     QMediaContent nextResource;

   119 };

   120 

   121 class QM3uPlaylistWriter : public QMediaPlaylistWriter

   122 {

   123 public:

   124     QM3uPlaylistWriter(QIODevice *device)

   125         :m_device(device), m_textStream(new QTextStream(m_device))

   126     {

   127     }

   128 

   129     virtual ~QM3uPlaylistWriter()

   130     {

   131         delete m_textStream;

   132     }

   133 

   134     virtual bool writeItem(const QMediaContent& item)

   135     {

   136         *m_textStream << item.canonicalUrl().toString() << endl;

   137         return true;

   138     }

   139 

   140     virtual void close()

   141     {

   142     }

   143 

   144 private:

   145     QIODevice *m_device;

   146     QTextStream *m_textStream;

   147 };

   148 

   149 

   150 QM3uPlaylistPlugin::QM3uPlaylistPlugin(QObject *parent)

   151     :QMediaPlaylistIOPlugin(parent)

   152 {

   153 }

   154 

   155 QM3uPlaylistPlugin::~QM3uPlaylistPlugin()

   156 {

   157 }

   158 

   159 bool QM3uPlaylistPlugin::canRead(QIODevice *device, const QByteArray &format) const

   160 {

   161     return device->isReadable() && (format == "m3u" || format.isEmpty());

   162 }

   163 

   164 bool QM3uPlaylistPlugin::canRead(const QUrl& location, const QByteArray &format) const

   165 {

   166     if (!QFileInfo(location.toLocalFile()).isReadable())

   167         return false;

   168 

   169     if (format == "m3u")

   170         return true;

   171 

   172     if (!format.isEmpty())

   173         return false;

   174     else

   175         return location.toLocalFile().toLower().endsWith(QLatin1String("m3u"));

   176 }

   177 

   178 bool QM3uPlaylistPlugin::canWrite(QIODevice *device, const QByteArray &format) const

   179 {

   180     return device->isOpen() && device->isWritable() && format == "m3u";

   181 }

   182 

   183 QStringList QM3uPlaylistPlugin::keys() const

   184 {

   185     return QStringList() << QLatin1String("m3u");

   186 }

   187 

   188 QMediaPlaylistReader *QM3uPlaylistPlugin::createReader(QIODevice *device, const QByteArray &format)

   189 {

   190     Q_UNUSED(format);

   191     return new QM3uPlaylistReader(device);

   192 }

   193 

   194 QMediaPlaylistReader *QM3uPlaylistPlugin::createReader(const QUrl& location, const QByteArray &format)

   195 {

   196     Q_UNUSED(format);

   197     return new QM3uPlaylistReader(location);

   198 }

   199 

   200 QMediaPlaylistWriter *QM3uPlaylistPlugin::createWriter(QIODevice *device, const QByteArray &format)

   201 {

   202     Q_UNUSED(format);

   203     return new QM3uPlaylistWriter(device);

   204 }

   205