chameleon.playlist.plist.PlistPlaylist Maven / Gradle / Ivy
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/*
* Copyright (c) 2008, Christophe Delory
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY CHRISTOPHE DELORY ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL CHRISTOPHE DELORY BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package chameleon.playlist.plist;
import java.io.OutputStream;
import java.io.StringWriter;
import java.util.Date;
import chameleon.content.Content;
import chameleon.playlist.Media;
import chameleon.playlist.Playlist;
import chameleon.playlist.Sequence;
import chameleon.playlist.SpecificPlaylist;
import chameleon.playlist.SpecificPlaylistProvider;
import chameleon.plist.Array;
import chameleon.plist.Dict;
import chameleon.plist.Plist;
import chameleon.plist.PlistObject;
import chameleon.plist.PlistText;
import chameleon.xml.XmlSerializer;
/**
* The definition of an iTunes playlist.
* @version $Revision: 92 $
* @author Christophe Delory
*/
public class PlistPlaylist implements SpecificPlaylist
{
/**
* The provider of this specific playlist.
*/
private transient SpecificPlaylistProvider _provider = null;
/**
* The playlist itself.
*/
private Plist _plist = new Plist();
@Override
public void setProvider(final SpecificPlaylistProvider provider)
{
_provider = provider;
}
@Override
public SpecificPlaylistProvider getProvider()
{
return _provider;
}
@Override
public void writeTo(final OutputStream out, final String encoding) throws Exception
{
// Marshal the PLIST playlist.
final StringWriter writer = new StringWriter();
final XmlSerializer serializer = XmlSerializer.getMapping("chameleon/plist"); // May throw Exception.
// Specifies whether XML documents (as generated at marshalling) should use indentation or not. Default is false.
serializer.getMarshaller().setProperty("org.exolab.castor.indent", "true");
serializer.marshal(_plist, writer, false); // May throw Exception.
String enc = encoding;
if (enc == null)
{
enc = "UTF-8";
}
final byte[] bytes = writer.toString().getBytes(enc); // May throw UnsupportedEncodingException.
out.write(bytes); // Throws NullPointerException if out is null. May throw IOException.
out.flush(); // May throw IOException.
}
@Override
public Playlist toPlaylist()
{
final Playlist ret = new Playlist();
if ((_plist.getPlistObject() != null) && (_plist.getPlistObject() instanceof Dict))
{
final Dict rootDict = (Dict) _plist.getPlistObject();
Dict tracks = null;
final PlistObject tracksObject = rootDict.findObjectByKey("Tracks");
if ((tracksObject != null) && (tracksObject instanceof Dict))
{
tracks = (Dict) tracksObject;
}
Array playlists = null;
final PlistObject playlistsObject = rootDict.findObjectByKey("Playlists");
if ((playlistsObject != null) && (playlistsObject instanceof Array))
{
playlists = (Array) playlistsObject;
}
if ((tracks != null) && (playlists != null))
{
// Iterate through the playlists.
for (PlistObject playlistObject : playlists.getPlistObjects())
{
if (playlistObject instanceof Dict) // NOPMD Deeply nested if then statement
{
final Dict playlist = (Dict) playlistObject;
final PlistObject playlistItemsArrayObject = playlist.findObjectByKey("Playlist Items");
if ((playlistItemsArrayObject != null) && (playlistItemsArrayObject instanceof Array))
{
final Array playlistItemsArray = (Array) playlistItemsArrayObject;
// Each playlist is assigned to a dedicated sequence.
final Sequence sequence = new Sequence(); // NOPMD Avoid instantiating new objects inside loops
for (PlistObject playlistItemsDictObject : playlistItemsArray.getPlistObjects())
{
if (playlistItemsDictObject instanceof Dict)
{
final PlistObject trackIdObject = ((Dict) playlistItemsDictObject).findObjectByKey("Track ID");
if ((trackIdObject != null) && (trackIdObject instanceof PlistText))
{
final String trackId = ((PlistText) trackIdObject).getValue();
if (trackId != null)
{
// Got one track identifier!!!
// Now find it in the track list.
final PlistObject trackObject = tracks.findObjectByKey(trackId);
if ((trackObject != null) && (trackObject instanceof Dict))
{
final Dict track = (Dict) trackObject;
final PlistObject locationObject = track.findObjectByKey("Location");
if ((locationObject != null) && (locationObject instanceof PlistText))
{
final String location = ((PlistText) locationObject).getValue();
if (location != null)
{
// Now create the media.
final Media media = new Media(); // NOPMD Avoid instantiating new objects inside loops
final Content content = new Content(location); // NOPMD Avoid instantiating new objects inside loops
media.setSource(content);
// Try to retrieve the duration.
final PlistObject totalTimeObject = track.findObjectByKey("Total Time");
if ((totalTimeObject != null) && (totalTimeObject instanceof chameleon.plist.Integer))
{
final String totalTimeString = ((chameleon.plist.Integer) totalTimeObject).getValue();
if (totalTimeString != null)
{
try
{
final Integer totalTime = Integer.decode(totalTimeString); // May throw NumberFormatException.
content.setDuration(totalTime.longValue());
}
catch (NumberFormatException e) // NOPMD Avoid empty catch blocks
{
// Ignore it.
}
}
}
// Try to retrieve the length.
final PlistObject sizeObject = track.findObjectByKey("Size");
if ((sizeObject != null) && (sizeObject instanceof chameleon.plist.Integer))
{
final String sizeString = ((chameleon.plist.Integer) sizeObject).getValue();
if (sizeString != null)
{
try
{
final Integer size = Integer.decode(sizeString); // May throw NumberFormatException.
if (size.intValue() >= 0)
{
content.setLength(size.longValue());
}
}
catch (NumberFormatException e) // NOPMD Avoid empty catch blocks
{
// Ignore it.
}
}
}
// Try to retrieve the last modified date.
final PlistObject dateModifiedObject = track.findObjectByKey("Date Modified");
if ((dateModifiedObject != null) && (dateModifiedObject instanceof chameleon.plist.Date))
{
final Date dateModified = ((chameleon.plist.Date) dateModifiedObject).getValue();
if (dateModified != null)
{
content.setLastModified(dateModified.getTime());
}
}
sequence.addComponent(media);
}
}
}
}
}
}
}
ret.getRootSequence().addComponent(sequence);
}
}
}
ret.normalize();
}
}
return ret;
}
/**
* Returns the playlist itself.
* @return a plist element. Shall not be null.
* @see #setPlist
*/
public Plist getPlist()
{
return _plist;
}
/**
* Initializes the playlist itself.
* @param plist a plist element. Shall not be null.
* @throws NullPointerException if plist is null.
* @see #getPlist
*/
public void setPlist(final Plist plist)
{
if (plist == null)
{
throw new NullPointerException("No plist");
}
_plist = plist;
}
}
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