Implemented equalizer

[someplayer] / src / filestorage.cpp

diff --git a/src/filestorage.cpp b/src/filestorage.cpp
index 27df605..3dab290 100644 (file)
--- a/src/filestorage.cpp
+++ b/src/filestorage.cpp
@@ -1,9 +1,42 @@
+/*
+ * 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 <QRegExp>
 
 using namespace SomePlayer::Storage;
+using namespace SomePlayer::DataObjects;
 
 FileStorage::FileStorage(QString path) {
        _path_prefix = path;
+       _meta_regexp.setPattern("#META\\ +\\[(\\d+)\\]\\[(\\d+)\\].*::(.+)::,::(.+)::,::(.+)::");
+       _path_regexp.setPattern("#PATH (.+)");
+
+       Playlist current = getCurrentPlaylist();
+       if (current.name() == PLAYLIST_BAD_NAME) {
+               current.setName(_CURRENT_PLAYLIST_NAME_);
+               saveCurrentPlaylist(current);
+       }
 }
 
 QList<Playlist> FileStorage::getPlaylists() {
@@ -11,19 +44,97 @@ 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_);
+       Playlist playlist;
+       playlist.setName(PLAYLIST_BAD_NAME);
+       if (playlistFile.exists()) {
+               playlist.setName(name);
+               playlistFile.open(QFile::ReadOnly);
+               QTextStream stream(&playlistFile);
+               QString buffer = stream.readLine();
+               if (buffer.startsWith(_PLAYLIST_SIGNATURE_)) {
+                       while (!stream.atEnd()) {
+                               buffer = stream.readLine();
+                               if (_meta_regexp.indexIn(buffer) != -1) {
+                                       int id = _meta_regexp.cap(1).toInt();
+                                       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(id, meta, source);
+                                               playlist.addTrack(track);
+                                       }
+                               }
+                       }
+               }
+       }
+       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);
+               }
+       }
+       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);
+       stream << _PLAYLIST_SIGNATURE_ << endl;
+       const QList<Track> &tracks = playlist.tracks();
+       foreach (Track track, tracks) {
+               stream << _PLAYLIST_META_KEYWORD_ << " [" << track.id() << "]" << "[" << track.metadata().length() << "],::"
+                               << track.metadata().artist() << "::,::" << track.metadata().album() << "::,::"
+                               << track.metadata().title() << "::" << endl;
+               stream << _PLAYLIST_PATH_KEYWORD_ << " " << track.source() << endl;
+       }
 }
 
 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);
 }