Andrew DeMaria
9 years ago
parent
2ffe582ccf
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9035394d3d
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/* |
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* This file is part of Libresonic. |
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* |
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* Libresonic is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* Libresonic is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with Libresonic. If not, see <http://www.gnu.org/licenses/>.
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* |
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* Copyright 2015 (C) Sindre Mehus |
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*/ |
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package org.libresonic.player.service; |
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import com.google.common.base.Predicate; |
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import com.google.common.collect.Iterables; |
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import com.google.common.collect.Lists; |
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import org.apache.commons.io.IOUtils; |
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import org.libresonic.player.util.StringUtil; |
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import javax.xml.stream.XMLInputFactory; |
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import javax.xml.stream.XMLStreamConstants; |
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import javax.xml.stream.XMLStreamException; |
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import javax.xml.stream.XMLStreamReader; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.InputStream; |
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import java.net.URL; |
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import java.util.*; |
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/** |
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* @author Sindre Mehus |
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* @version $Id$ |
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*/ |
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public class ITunesParser { |
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private String iTunesXml; |
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private final XMLInputFactory inputFactory; |
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public ITunesParser(String iTunesXml) { |
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this.iTunesXml = iTunesXml; |
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inputFactory = XMLInputFactory.newFactory(); |
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inputFactory.setProperty(XMLInputFactory.SUPPORT_DTD, false); |
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} |
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public List<ITunesPlaylist> parse() throws Exception { |
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List<ITunesPlaylist> playlists = parsePlaylists(); |
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Map<String, File> tracks = parseTracks(playlists); |
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populatePlaylistTracks(playlists, tracks); |
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for (ITunesPlaylist p : playlists) { |
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System.out.println(p); |
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} |
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return playlists; |
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} |
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private List<ITunesPlaylist> parsePlaylists() throws Exception { |
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List<ITunesPlaylist> playlists = new ArrayList<ITunesPlaylist>(); |
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InputStream in = new FileInputStream(iTunesXml); |
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try { |
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ITunesPlaylist playlist = null; |
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XMLStreamReader streamReader = inputFactory.createXMLStreamReader(in); |
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while (streamReader.hasNext()) { |
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int code = streamReader.next(); |
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if (code == XMLStreamReader.START_ELEMENT) { |
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String key = readKey(streamReader); |
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if ("Playlist ID".equals(key)) { |
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playlist = new ITunesPlaylist(readNextTag(streamReader)); |
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playlists.add(playlist); |
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} |
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if (playlist != null) { |
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if ("Name".equals(key)) { |
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playlist.name = readNextTag(streamReader); |
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} else if ("Smart Info".equals(key)) { |
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playlist.smart = true; |
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} else if ("Visible".equals(key)) { |
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playlist.visible = false; |
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} else if ("Distinguished Kind".equals(key)) { |
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playlist.distinguishedKind = readNextTag(streamReader); |
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} else if ("Track ID".equals(key)) { |
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playlist.trackIds.add(readNextTag(streamReader)); |
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} |
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} |
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} |
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} |
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} finally { |
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IOUtils.closeQuietly(in); |
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} |
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return Lists.newArrayList(Iterables.filter(playlists, new Predicate<ITunesPlaylist>() { |
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@Override |
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public boolean apply(ITunesPlaylist input) { |
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return input.isIncluded(); |
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} |
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})); |
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} |
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private Map<String, File> parseTracks(List<ITunesPlaylist> playlists) throws Exception { |
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Map<String, File> result = new HashMap<String, File>(); |
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SortedSet<String> trackIds = new TreeSet<String>(); |
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for (ITunesPlaylist playlist : playlists) { |
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trackIds.addAll(playlist.trackIds); |
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} |
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InputStream in = new FileInputStream(iTunesXml); |
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try { |
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XMLStreamReader streamReader = inputFactory.createXMLStreamReader(in); |
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String trackId = null; |
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while (streamReader.hasNext()) { |
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int code = streamReader.next(); |
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if (code == XMLStreamReader.START_ELEMENT) { |
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String key = readKey(streamReader); |
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if ("Track ID".equals(key)) { |
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trackId = readNextTag(streamReader); |
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} else if (trackId != null && trackIds.contains(trackId) && "Location".equals(key)) { |
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String location = readNextTag(streamReader); |
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File file = new File(StringUtil.urlDecode(new URL(location).getFile())); |
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result.put(trackId, file); |
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} |
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} |
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} |
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} finally { |
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IOUtils.closeQuietly(in); |
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} |
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return result; |
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} |
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private void populatePlaylistTracks(List<ITunesPlaylist> playlists, Map<String, File> tracks) { |
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for (ITunesPlaylist playlist : playlists) { |
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for (String trackId : playlist.trackIds) { |
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File file = tracks.get(trackId); |
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if (file != null) { |
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playlist.trackFiles.add(file); |
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} |
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} |
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} |
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} |
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private String readNextTag(XMLStreamReader streamReader) throws XMLStreamException { |
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while (streamReader.next() != XMLStreamConstants.START_ELEMENT) { |
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} |
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return streamReader.getElementText(); |
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} |
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private String readKey(XMLStreamReader streamReader) { |
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try { |
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if (streamReader.getEventType() == XMLStreamConstants.START_ELEMENT && |
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"key".equals(streamReader.getName().getLocalPart())) { |
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return streamReader.getElementText(); |
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} |
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} catch (XMLStreamException e) { |
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// TODO
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System.out.println(streamReader.getName().getLocalPart() + " " + e); |
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} |
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return null; |
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} |
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// TODO
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public static void main(String[] args) throws Exception { |
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new ITunesParser("/Users/sindre/Music/iTunes/iTunes Music Library.xml").parse(); |
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} |
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private static class ITunesPlaylist { |
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private final String id; |
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private String name; |
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private boolean smart; |
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private final List<String> trackIds = new ArrayList<String>(); |
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private final List<File> trackFiles = new ArrayList<File>(); |
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private boolean visible = true; |
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private String distinguishedKind; |
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public ITunesPlaylist(String id) { |
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this.id = id; |
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} |
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public boolean isIncluded() { |
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return !smart && visible && distinguishedKind == null; |
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} |
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@Override |
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public String toString() { |
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StringBuilder s = new StringBuilder(id + " - " + name ); |
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for (File trackFile : trackFiles) { |
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s.append("\n " + trackFile); |
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} |
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return s.toString(); |
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} |
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} |
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} |
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