Improved directory navigation.
[someplayer] / src / filestorage.cpp
index 27df605..1ddb878 100644 (file)
@@ -1,9 +1,43 @@
+/*
+ * SomePlayer - An alternate music player for Maemo 5
+ * Copyright (C) 2010 Nikolay (somebody) Tischenko <niktischenko@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
 #include "filestorage.h"
+#include <QDir>
+#include <QDirIterator>
+#include <QFileInfo>
+#include <QTextStream>
+#include <QtXml/QtXml>
+// legacy _start_
+#include <QRegExp>
+// legacy _end_
 
 using namespace SomePlayer::Storage;
+using namespace SomePlayer::DataObjects;
 
 FileStorage::FileStorage(QString path) {
        _path_prefix = path;
+
+       Playlist current = getCurrentPlaylist();
+       if (current.name() == PLAYLIST_BAD_NAME) {
+               current.setName(_CURRENT_PLAYLIST_NAME_);
+               saveCurrentPlaylist(current);
+       }
 }
 
 QList<Playlist> FileStorage::getPlaylists() {
@@ -11,19 +45,179 @@ QList<Playlist> FileStorage::getPlaylists() {
        return stub;
 }
 
+Playlist FileStorage::getPlaylist(QString name) {
+       if (name == _CURRENT_PLAYLIST_SUBST_)
+               name = _CURRENT_PLAYLIST_NAME_;
+       QFile playlistFile (_path_prefix + "/" + name + "." + _PLAYLIST_FILE_EXTENSION_OLD_); // remove OLD_ in next version
+       Playlist playlist;
+       playlist.setName(PLAYLIST_BAD_NAME);
+       // legacy _start_
+       if (playlistFile.exists()) {
+               qWarning() << "Old playlist file format deteced";
+               QRegExp meta_regexp;
+               meta_regexp.setPattern("#META\\ +\\[(\\d+)\\]\\[(\\d+)\\].*::(.+)::,::(.+)::,::(.+)::");
+               QRegExp path_regexp;
+               path_regexp.setPattern("#PATH (.+)");
+               playlistFile.open(QFile::ReadOnly);
+               QTextStream stream(&playlistFile);
+               QString buffer = stream.readLine();
+               if (buffer.startsWith("#SOMEPLAYLIST")) {
+                       while (!stream.atEnd()) {
+                               buffer = stream.readLine();
+                               if (meta_regexp.indexIn(buffer) != -1) {
+                                       int seconds = meta_regexp.cap(2).toInt();
+                                       QString artist = meta_regexp.cap(3);
+                                       QString album = meta_regexp.cap(4);
+                                       QString title = meta_regexp.cap(5);
+                                       buffer = stream.readLine();
+                                       if (path_regexp.indexIn(buffer) != -1) {
+                                               QString source = path_regexp.cap(1);
+                                               TrackMetadata meta(title, artist, album, seconds);
+                                               Track track(meta, source);
+                                               playlist.addTrack(track);
+                                       }
+                               }
+                       }
+               }
+               playlist.setName(name);
+               qWarning() << "Saving playlist in new format";
+               savePlaylist(playlist);
+               playlistFile.close();
+               playlistFile.remove();
+       } else {
+               playlistFile.setFileName(_path_prefix + "/" + name + "." + _PLAYLIST_FILE_EXTENSION_);
+       // legacy _end_
+               if (playlistFile.exists()) {
+                       playlist.setName(name);
+                       QDomDocument doc;
+                       playlistFile.open(QFile::ReadOnly);
+                       doc.setContent(&playlistFile);
+                       playlistFile.close();
+                       QDomElement eplaylist = doc.documentElement();
+                       if (eplaylist.tagName() == "playlist") {
+                               QDomElement etracklist = eplaylist.firstChildElement("trackList");
+                               if (!etracklist.isNull()) {
+                                       QDomElement etrack = etracklist.firstChildElement("track");
+                                       while (!etrack.isNull()) {
+                                               QDomElement elocation = etrack.firstChildElement("location");
+                                               QDomElement eextension = etrack.firstChildElement("extension");
+                                               if (!eextension.isNull()) {
+                                                       QDomElement ecl_clip = eextension.firstChildElement("cl:clip");
+                                                       if (!ecl_clip.isNull()) {
+                                                               QString artist = ecl_clip.attribute("artist");
+                                                               QString album = ecl_clip.attribute("album");
+                                                               QString title = ecl_clip.attribute("title");
+                                                               QDomElement eduration = etrack.firstChildElement("duration");
+                                                               if (!eduration.isNull()) {
+                                                                       QVariant duration = eduration.text();
+                                                                       QByteArray basource;
+                                                                       basource.append(elocation.text());
+                                                                       QString source = QUrl::fromEncoded(basource).toLocalFile();
+                                                                       TrackMetadata meta(title, artist, album, duration.toInt()/1000);
+                                                                       Track track(meta, source);
+                                                                       playlist.addTrack(track);
+                                                               }
+                                                       }
+                                               }
+                                               etrack = etrack.nextSiblingElement("track");
+                                       }
+                               }
+                       }
+       // legacy _start_
+               }
+       // legacy _end_
+       }
+       return playlist;
+}
+
+QStringList FileStorage::getPlaylistsNames() {
+       QDir directory(_path_prefix);
+       QDirIterator iterator(directory, QDirIterator::FollowSymlinks);
+       QStringList playlistNames;
+       while (iterator.hasNext()) {
+               QString entry = iterator.next();
+               QFileInfo info(entry);
+               QString suffix = info.suffix().toLower();
+               if (suffix == _PLAYLIST_FILE_EXTENSION_) {
+                       QString name = info.fileName().replace(QString(".%1").arg(_PLAYLIST_FILE_EXTENSION_), "", Qt::CaseInsensitive);
+                       if (name == _CURRENT_PLAYLIST_NAME_)
+                           name = _CURRENT_PLAYLIST_SUBST_;
+                       playlistNames.append(name);
+               }
+               // legacy _start_
+               else if (suffix == _PLAYLIST_FILE_EXTENSION_OLD_){
+                       QString name = info.fileName().replace(QString(".%1").arg(_PLAYLIST_FILE_EXTENSION_OLD_), "", Qt::CaseInsensitive);
+                       if (name == _CURRENT_PLAYLIST_NAME_)
+                           name = _CURRENT_PLAYLIST_SUBST_;
+                       playlistNames.append(name);
+               }
+               // legacy _end_
+       }
+       return playlistNames;
+}
+
 void FileStorage::savePlaylist(Playlist playlist) {
+       QString name = playlist.name();
+       if (playlist.name() == _CURRENT_PLAYLIST_SUBST_)
+               name = _CURRENT_PLAYLIST_NAME_;
+       QString filename = _path_prefix + "/" + name + "."_PLAYLIST_FILE_EXTENSION_;
+       QFile playlistFile(filename);
+       if (playlistFile.exists()) {
+               playlistFile.remove();
+       }
+       playlistFile.open(QFile::WriteOnly);
+       QTextStream stream(&playlistFile);
+       QDomDocument doc;
+       QDomElement root = doc.createElement("playlist");
+       root.setAttribute("version", "1");
+       root.setAttribute("xmlns", "http://xspf.org/ns/0/");
+       root.setAttribute("xmlns:cl", "http://example.com");
+       QDomElement tracklist = doc.createElement("trackList");
+       foreach (Track track, playlist.tracks()) {
+               QDomElement etrack = doc.createElement("track");
+               QDomElement elocation = doc.createElement("location");
+               QDomElement eextension = doc.createElement("extension");
+               QDomElement ecl_clip = doc.createElement("cl:clip");
+               QDomElement etitle = doc.createElement("title");
+               QDomElement eduration = doc.createElement("duration");
+               etitle.appendChild(doc.createTextNode(QString("%1 - %2").arg(track.metadata().artist()).arg(track.metadata().title())));
+               ecl_clip.setAttribute("title", track.metadata().title());
+               ecl_clip.setAttribute("artist", track.metadata().artist());
+               ecl_clip.setAttribute("album", track.metadata().album());
+               eextension.appendChild(ecl_clip);
+               eextension.setAttribute("application", "http://example.com");
+               elocation.appendChild(doc.createTextNode(QString("%1").arg(QUrl::fromLocalFile(track.source()).toEncoded().constData())));
+               eduration.appendChild(doc.createTextNode(QString("%1").arg(track.metadata().length()*1000)));
+               etrack.appendChild(elocation);
+               etrack.appendChild(eextension);
+               etrack.appendChild(etitle);
+               etrack.appendChild(eduration);
+               tracklist.appendChild(etrack);
+       }
+       root.appendChild(tracklist);
+       doc.appendChild(root);
+       stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+       stream << doc.toString();
 }
 
 void FileStorage::removePlaylist(Playlist playlist) {
+       QString filename = _path_prefix + "/" + playlist.name() + "." + _PLAYLIST_FILE_EXTENSION_;
+       QFile file(filename);
+       file.remove();
 }
 
 void FileStorage::removePlaylist(QString name) {
+       QString filename = _path_prefix + "/" + (name == _CURRENT_PLAYLIST_SUBST_ ? _CURRENT_PLAYLIST_NAME_ : name)
+                          + "." + _PLAYLIST_FILE_EXTENSION_;
+       QFile file(filename);
+       file.remove();
 }
 
 Playlist FileStorage::getCurrentPlaylist() {
-       Playlist stub;
-       return stub;
+       return getPlaylist(_CURRENT_PLAYLIST_NAME_);
 }
 
 void FileStorage::saveCurrentPlaylist(Playlist playlist) {
+       playlist.setName(_CURRENT_PLAYLIST_NAME_);
+       savePlaylist(playlist);
 }