michael@0: /**
michael@0:  * Copyright (c) 2012-2013, David Wiesner
michael@0:  * 
michael@0:  * This file is part of Andoid Caldav Sync Adapter Free.
michael@0:  *
michael@0:  * Andoid Caldav Sync Adapter Free is free software: you can redistribute 
michael@0:  * it and/or modify it under the terms of the GNU General Public License 
michael@0:  * as published by the Free Software Foundation, either version 3 of the 
michael@0:  * License, or at your option any later version.
michael@0:  *
michael@0:  * Andoid Caldav Sync Adapter Free is distributed in the hope that 
michael@0:  * it will be useful, but WITHOUT ANY WARRANTY; without even the implied 
michael@0:  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
michael@0:  * GNU General Public License for more details.
michael@0:  *
michael@0:  * You should have received a copy of the GNU General Public License
michael@0:  * along with Andoid Caldav Sync Adapter Free.  
michael@0:  * If not, see <http://www.gnu.org/licenses/>.
michael@0:  * 
michael@0:  */
michael@0: 
michael@0: package org.gege.caldavsyncadapter.caldav.xml;
michael@0: 
michael@0: import java.net.URI;
michael@0: import java.net.URISyntaxException;
michael@0: import java.util.ArrayList;
michael@0: import java.util.List;
michael@0: 
michael@0: import org.gege.caldavsyncadapter.BuildConfig;
michael@0: import org.xml.sax.Attributes;
michael@0: import org.xml.sax.SAXException;
michael@0: import org.xml.sax.helpers.DefaultHandler;
michael@0: 
michael@0: import android.util.Log;
michael@0: 
michael@0: public class CalendarHomeHandler extends DefaultHandler {
michael@0: 
michael@0: 	private static final String HREF = "href";
michael@0: 	private static final String CALENDAR_HOME_SET = "calendar-home-set";
michael@0: 	private boolean isInCalendarHomeSet = false;
michael@0: 	private StringBuilder stringBuilder = new StringBuilder();
michael@0: 	private String currentElement;
michael@0: 	private URI principalURI;
michael@0: 	
michael@0: 	public List<URI> calendarHomeSet = new ArrayList<URI>();
michael@0: 
michael@0: 	public CalendarHomeHandler(URI principalURI) {
michael@0: 		this.principalURI = principalURI;
michael@0: 	}
michael@0: 
michael@0: 	@Override
michael@0: 	public void startElement(String uri, String localName, String qName,
michael@0: 			Attributes attributes) throws SAXException {
michael@0: 		if (CALENDAR_HOME_SET.equals(localName)) {
michael@0: 			isInCalendarHomeSet = true;
michael@0: 		}
michael@0: 		currentElement = localName;
michael@0: 		stringBuilder.setLength(0);
michael@0: 	}
michael@0: 
michael@0: 	@Override
michael@0: 	public void characters(char[] ch, int start, int length)
michael@0: 			throws SAXException {
michael@0: 		if (HREF.equals(currentElement) && isInCalendarHomeSet) {
michael@0: 			stringBuilder.append(ch, start, length);
michael@0: 		}
michael@0: 	}
michael@0: 
michael@0: 	@Override
michael@0: 	public void endElement(String uri, String localName, String qName)
michael@0: 			throws SAXException {
michael@0: 		if (HREF.equals(localName) && isInCalendarHomeSet) {
michael@0: 			String calendarHomeSet = stringBuilder.toString();
michael@0: 			try {
michael@0: 				URI calendarHomeSetURI = new URI(calendarHomeSet);
michael@0: 				calendarHomeSetURI = principalURI.resolve(calendarHomeSetURI);
michael@0: 				this.calendarHomeSet.add(calendarHomeSetURI);
michael@0: 			} catch (URISyntaxException e) {
michael@0: 				if (BuildConfig.DEBUG) {
michael@0: 					Log.e(CalendarHomeHandler.class.getSimpleName(),
michael@0: 							"uri malformed: " + calendarHomeSet);
michael@0: 				} else {
michael@0: 					Log.e(CalendarHomeHandler.class.getSimpleName(),
michael@0: 							"uri malformed in calendar-home-set/href");
michael@0: 				}
michael@0: 			}
michael@0: 			//stringBuilder.setLength(0);
michael@0: 		}
michael@0: 		if (CALENDAR_HOME_SET.equals(localName)) {
michael@0: 			isInCalendarHomeSet = false;
michael@0: 		}
michael@0: 		currentElement=null;
michael@0: 	}
michael@0: }