improved remote playlists support

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@9334 90c681e8-e032-0410-971d-27865f9a5e38

4 files changed, 117 insertions, 42 deletions

diff --git a/src/qmmpui/addurldialog.cpp b/src/qmmpui/addurldialog.cpp
index 1b89e5aee..c1f06b39b 100644
--- a/src/qmmpui/addurldialog.cpp
+++ b/src/qmmpui/addurldialog.cpp
@@ -99,27 +99,43 @@ void AddUrlDialog::accept()
          return;
     }
 
-    QString s = urlComboBox->currentText().trimmed();
+    QString path = urlComboBox->currentText().trimmed();
 
-    if(!s.startsWith("http://") && !s.contains("://"))
-        s.prepend("http://");
+    if(QFile::exists(path)) //is local file
+    {
+        m_model->add(path);
+        addToHistory(path);
+        QDialog::accept();
+        return;
+    }
 
-    if(!MetaDataManager::instance()->protocols().contains(QUrl(s).scheme()))
+    if(!path.startsWith("http://") && !path.contains("://"))
+        path.prepend("http://");
+
+    if(MetaDataManager::hasMatch(MetaDataManager::instance()->regExps(), path))
     {
-        qWarning("AddUrlDialog: unsupported protocol");
+        addToHistory(path);
+        m_model->add(path);
         QDialog::accept();
         return;
     }
 
-    m_history.removeAll(s);
-    m_history.prepend(s);
+    if (path.startsWith("http://") || path.startsWith("https://")) //try to download playlist
+    {
+        m_downloader->start(QUrl(path), m_model);
+        addToHistory(path);
+        return;
+    }
 
-    if (s.startsWith("http://") || s.startsWith("https://")) //try to download playlist
+    if(!MetaDataManager::instance()->protocols().contains(QUrl(path).scheme()))
     {
-        m_downloader->start(QUrl(s), m_model);
+        qWarning("AddUrlDialog: unsupported protocol");
+        QDialog::reject();
         return;
     }
-    m_model->add(s);
+
+    addToHistory(path);
+    m_model->add(path);
     QDialog::accept();
 }
 
@@ -127,3 +143,9 @@ void AddUrlDialog::setModel(PlayListModel *m)
 {
     m_model = m;
 }
+
+void AddUrlDialog::addToHistory(const QString &path)
+{
+    m_history.removeAll(path);
+    m_history.prepend(path);
+}
diff --git a/src/qmmpui/addurldialog_p.h b/src/qmmpui/addurldialog_p.h
index 5e4d478a5..d9d4a3d78 100644
--- a/src/qmmpui/addurldialog_p.h
+++ b/src/qmmpui/addurldialog_p.h
@@ -48,6 +48,7 @@ private:
     ~AddUrlDialog();
     void accept() override;
     void setModel(PlayListModel*);
+    void addToHistory(const QString &path);
     static QPointer<AddUrlDialog> m_instance;
     PlayListModel *m_model;
     PlayListDownloader *m_downloader;
diff --git a/src/qmmpui/playlistdownloader.cpp b/src/qmmpui/playlistdownloader.cpp
index 01dbcbcb3..cc71eebd3 100644
--- a/src/qmmpui/playlistdownloader.cpp
+++ b/src/qmmpui/playlistdownloader.cpp
@@ -28,7 +28,6 @@
 
 PlayListDownloader::PlayListDownloader(QObject *parent) : QObject(parent)
 {
-    m_getReply = nullptr;
     m_ua = QString("qmmp/%1").arg(Qmmp::strVersion()).toLatin1();
     m_manager = new QNetworkAccessManager(this);
     connect(m_manager, SIGNAL(finished (QNetworkReply *)), SLOT(readResponse(QNetworkReply *)));
@@ -51,63 +50,108 @@ PlayListDownloader::PlayListDownloader(QObject *parent) : QObject(parent)
 void PlayListDownloader::start(const QUrl &url, PlayListModel *model)
 {
     m_model = model;
-    if(!PlayListParser::findByUrl(url)) //is it playlist?
-    {
-        m_model->add(url.toString());
-        emit finished(true);
-        return;
-    }
     m_url = url;
+    m_redirect_url.clear();
+
     QNetworkRequest r;
     r.setUrl(url);
     r.setRawHeader("User-Agent", m_ua);
-    m_getReply = m_manager->get(r);
-    m_redirect_url.clear();
+
+    if(PlayListParser::findByUrl(url)) //is it playlist?
+    {
+        m_downloadReply = m_manager->get(r); //download playlist
+    }
+    else
+    {
+        m_checkReply = m_manager->get(r); //check playlist
+        connect(m_checkReply, SIGNAL(downloadProgress(qint64, qint64)), SLOT(onDownloadProgress(qint64, qint64)));
+    }
 }
 
-void PlayListDownloader::readResponse(QNetworkReply *reply)
+void PlayListDownloader::onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal)
 {
-    if(reply != m_getReply)
+    Q_UNUSED(bytesTotal);
+    if(bytesReceived > 20480) //20к - maximum playlist size
     {
-        reply->deleteLater();
-        return;
+        QNetworkReply *reply = qobject_cast<QNetworkReply *>(sender());
+        if(reply)
+            reply->abort();
     }
-    if(reply->error() != QNetworkReply::NoError)
+}
+
+void PlayListDownloader::readResponse(QNetworkReply *reply)
+{
+    if(!m_model)
     {
-        emit finished(false, reply->errorString() + " (" + reply->error() + ")");
         reply->deleteLater();
         return;
     }
 
-    QUrl url = reply->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl();
-    if(!url.isEmpty() && url != m_redirect_url)
+    if(reply == m_downloadReply)
     {
-        m_redirect_url = url;
-        qDebug("PlayListDownloader: redirect to %s", qPrintable(url.toString()));
-        QNetworkRequest request(url);
-        request.setRawHeader("User-Agent", m_ua);
-        if(reply == m_getReply)
-            m_getReply = m_manager->get(request);
+        m_downloadReply = nullptr;
+
+        if(reply->error() != QNetworkReply::NoError)
+        {
+            emit finished(false, reply->errorString() + " (" + reply->error() + ")");
+            reply->deleteLater();
+            return;
+        }
+
+        QUrl url = reply->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl();
+        if(!url.isEmpty() && m_url != url)
+        {
+            reply->deleteLater();
+            qDebug("PlayListDownloader: redirect to %s", qPrintable(url.toString()));
+            start(url, m_model);
+            return;
+        }
+
+        QString contentType = reply->header(QNetworkRequest::ContentTypeHeader).toString();
+        qDebug("PlayListDownloader: content type: %s", qPrintable(contentType));
+        PlayListFormat *fmt = PlayListParser::findByMime(contentType);
+        if(!fmt)
+            fmt = PlayListParser::findByUrl(m_url);
+
+        if(fmt)
+        {
+            m_model->loadPlaylist(fmt->properties().shortName, reply->readAll());
+            emit finished(true);
+        }
+        else
+        {
+            emit finished(false, tr("Unsupported playlist format"));
+        }
+
         reply->deleteLater();
-        return;
     }
-    m_redirect_url.clear();
-
-    if(reply == m_getReply)
+    else if(reply == m_checkReply)
     {
-        m_getReply = nullptr;
+        m_checkReply = nullptr;
 
-        if(m_model.isNull())
+        if(reply->error() != QNetworkReply::NoError) //playlist is not available, simply add URL
         {
+            m_model->add(m_url.toString());
+            reply->deleteLater();
             emit finished(true);
             return;
         }
 
+        QUrl url = reply->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl();
+        if(!url.isEmpty() && m_url != url)
+        {
+            reply->deleteLater();
+            qDebug("PlayListDownloader: redirect to %s", qPrintable(url.toString()));
+            start(url, m_model);
+            return;
+        }
+
         QString contentType = reply->header(QNetworkRequest::ContentTypeHeader).toString();
         qDebug("PlayListDownloader: content type: %s", qPrintable(contentType));
         PlayListFormat *fmt = PlayListParser::findByMime(contentType);
         if(!fmt)
             fmt = PlayListParser::findByUrl(m_url);
+
         if(fmt)
         {
             m_model->loadPlaylist(fmt->properties().shortName, reply->readAll());
@@ -115,8 +159,14 @@ void PlayListDownloader::readResponse(QNetworkReply *reply)
         }
         else
         {
-            emit finished(false, tr("Unsupported playlist format"));
+            m_model->add(m_url.toString());
+            emit finished(true);
         }
+
+        reply->deleteLater();
+    }
+    else //unknown request
+    {
+        reply->deleteLater();
     }
-    reply->deleteLater();
 }
diff --git a/src/qmmpui/playlistdownloader.h b/src/qmmpui/playlistdownloader.h
index ee848b4bb..95d645d6a 100644
--- a/src/qmmpui/playlistdownloader.h
+++ b/src/qmmpui/playlistdownloader.h
@@ -59,12 +59,14 @@ public slots:
     void start(const QUrl &url, PlayListModel *model);
 
 private slots:
+    void onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
     void readResponse(QNetworkReply *reply);
 
 private:
     QNetworkAccessManager *m_manager;
     QUrl m_redirect_url, m_url;
-    QNetworkReply *m_getReply;
+    QNetworkReply *m_downloadReply = nullptr;
+    QNetworkReply *m_checkReply = nullptr;
     QByteArray m_ua;
     QPointer<PlayListModel> m_model;
 };