| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.providers.media.playlist; |
| |
| import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT; |
| import static org.xmlpull.v1.XmlPullParser.START_TAG; |
| |
| import android.util.Xml; |
| |
| import androidx.annotation.NonNull; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Path; |
| import java.util.List; |
| |
| public class XspfPlaylistPersister implements PlaylistPersister { |
| private static final String TAG_PLAYLIST = "playlist"; |
| private static final String TAG_TRACK_LIST = "trackList"; |
| private static final String TAG_TRACK = "track"; |
| private static final String TAG_LOCATION = "location"; |
| |
| @Override |
| public void read(@NonNull InputStream in, @NonNull List<Path> items) throws IOException { |
| final FileSystem fs = FileSystems.getDefault(); |
| try { |
| final XmlPullParser parser = Xml.newPullParser(); |
| parser.setInput(in, StandardCharsets.UTF_8.name()); |
| |
| int type; |
| while ((type = parser.next()) != END_DOCUMENT) { |
| if (type != START_TAG) continue; |
| |
| if (TAG_LOCATION.equals(parser.getName())) { |
| final String src = parser.nextText(); |
| if (src != null) { |
| items.add(fs.getPath(src.replace('\\', '/'))); |
| } |
| } |
| } |
| } catch (XmlPullParserException e) { |
| throw new IOException(e); |
| } |
| } |
| |
| @Override |
| public void write(@NonNull OutputStream out, @NonNull List<Path> items) throws IOException { |
| final XmlSerializer doc = Xml.newSerializer(); |
| doc.setOutput(out, StandardCharsets.UTF_8.name()); |
| doc.startDocument(null, true); |
| doc.startTag(null, TAG_PLAYLIST); |
| doc.startTag(null, TAG_TRACK_LIST); |
| for (Path item : items) { |
| doc.startTag(null, TAG_TRACK); |
| doc.startTag(null, TAG_LOCATION); |
| doc.text(item.toString()); |
| doc.endTag(null, TAG_LOCATION); |
| doc.endTag(null, TAG_TRACK); |
| } |
| doc.endTag(null, TAG_TRACK_LIST); |
| doc.endTag(null, TAG_PLAYLIST); |
| doc.endDocument(); |
| } |
| } |