/*
* Created on May 14, 2007
* Created by Paul Gardner
* Copyright (C) 2007 Aelitis, All Rights Reserved.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 63.529,40 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.util;
import org.gudy.azureus2.plugins.download.Download;
import org.gudy.azureus2.plugins.torrent.TorrentAttribute;
import org.gudy.azureus2.plugins.torrent.TorrentManager;
import org.gudy.azureus2.pluginsimpl.local.PluginInitializer;
public class
DownloadUtils
{
private static TorrentAttribute ta_tracker_extensions;
public static synchronized void
initialise()
{
if ( ta_tracker_extensions == null ){
TorrentManager tm = PluginInitializer.getDefaultInterface().getTorrentManager();
ta_tracker_extensions = tm.getAttribute( TorrentAttribute.TA_TRACKER_CLIENT_EXTENSIONS );
}
}
public static synchronized void
addTrackerExtension(
Download download,
String extension_prefix,
String extension_value )
{
String extension = "&" + extension_prefix + "=" + extension_value;
String value = download.getAttribute( ta_tracker_extensions );
if ( value != null ){
// if already exists then bail
if ( value.indexOf( extension ) != -1 ){
return;
}
// if prefix exists then remove existing value
if ( value.indexOf( extension_prefix ) != -1 ){
String[] bits = value.split("&");
value = "";
for ( int i=0; i<bits.length; i++ ){
String bit = bits[i].trim();
if ( bit.length() == 0 ){
continue;
}
if ( !bit.startsWith( extension_prefix+"=" )){
value += "&" + bit;
}
}
}
value += extension;
}else{
value = extension;
}
download.setAttribute( ta_tracker_extensions, value );
}
public static synchronized String
getTrackerExtensions(
Download download )
{
return( download.getAttribute( ta_tracker_extensions ));
}
public static synchronized void
removeTrackerExtension(
Download download,
String extension_prefix )
{
String value = download.getAttribute( ta_tracker_extensions );
if ( value != null ){
int pos = value.indexOf( extension_prefix );
if ( pos == -1 ){
return;
}
String[] bits = value.split("&");
value = "";
for ( int i=0; i<bits.length; i++ ){
String bit = bits[i].trim();
if ( bit.length() == 0 ){
continue;
}
if ( !bit.startsWith(extension_prefix+"=")){
value += "&" + bit;
}
}
if ( value.length() == 0 ){
value = null;
}
download.setAttribute( ta_tracker_extensions, value );
}
}
}