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.Arrays;
michael@0: import java.util.List;
michael@0: 
michael@0: import org.gege.caldavsyncadapter.BuildConfig;
michael@0: import org.gege.caldavsyncadapter.caldav.entities.DavCalendar;
michael@0: import org.gege.caldavsyncadapter.caldav.entities.DavCalendar.CalendarSource;
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 CalendarsHandler extends DefaultHandler {
michael@0: 
michael@0: 	private static final String CALENDAR = "calendar";
michael@0: 	private static final String RESOURCETYPE = "resourcetype";
michael@0: 	private static final String CALENDAR_COLOR = "calendar-color";
michael@0: 	private static final String GETCTAG = "getctag";
michael@0: 	private static final String DISPLAYNAME = "displayname";
michael@0: 	private URI homeURI;
michael@0: 
michael@0: 	public CalendarsHandler(URI homeURI) {
michael@0: 		this.homeURI = homeURI;
michael@0: 	}
michael@0: 
michael@0: 	private static final String RESPONSE = "response";
michael@0: 	private static final String HREF = "href";
michael@0: 
michael@0: 	private StringBuilder stringBuilder = new StringBuilder();
michael@0: 	private String currentElement;
michael@0: 	private DavCalendar calendar;
michael@0: 	public List<DavCalendar> calendars = new ArrayList<DavCalendar>();
michael@0: 	private boolean isInResourceType = false;
michael@0: 	private boolean isCalendarResource;
michael@0: 
michael@0: 	public final static List<String> TAGS = Arrays.asList(HREF, RESOURCETYPE,
michael@0: 			DISPLAYNAME, GETCTAG, CALENDAR_COLOR);
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 (RESPONSE.equals(localName)) {
michael@0: 			calendar = new DavCalendar(CalendarSource.CalDAV);
michael@0: 			isCalendarResource = false;
michael@0: 		} else if (RESOURCETYPE.equals(localName)) {
michael@0: 			isInResourceType = true;
michael@0: 		} else if (isInResourceType && CALENDAR.equals(localName)) {
michael@0: 			isCalendarResource = 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 (TAGS.contains(currentElement)) {
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 (TAGS.contains(localName)) {
michael@0: 			if (calendar != null) {
michael@0: 				if (HREF.equals(localName)) {
michael@0: 					String calendarUrl = stringBuilder.toString();
michael@0: 					calendarUrl = calendarUrl.trim();
michael@0: 					try {
michael@0: 						URI calendarURI = new URI(calendarUrl);
michael@0: 						calendar.setURI(homeURI.resolve(calendarURI));
michael@0: 					} catch (URISyntaxException e) {
michael@0: 						if (BuildConfig.DEBUG) {
michael@0: 							Log.e(CalendarsHandler.class.getSimpleName(),
michael@0: 									"calendar-uri malformed: " + calendarUrl);
michael@0: 						} else {
michael@0: 							Log.e(CalendarsHandler.class.getSimpleName(),
michael@0: 									"uri malformed in href");
michael@0: 						}
michael@0: 					}
michael@0: 				} else if (DISPLAYNAME.equals(localName)) {
michael@0: 					calendar.setCalendarDisplayName(stringBuilder.toString());
michael@0: 				} else if (GETCTAG.equals(localName)) {
michael@0: 					calendar.setCTag(stringBuilder.toString(), false);
michael@0: 				} else if (CALENDAR_COLOR.equals(localName)) {
michael@0: 					calendar.setCalendarColorAsString(stringBuilder.toString());
michael@0: 				}
michael@0: 			}
michael@0: 			//stringBuilder.setLength(0);
michael@0: 		} else if (RESPONSE.equals(localName)) {
michael@0: 			if (isCalendarResource && isValidCalendar(calendar)) {
michael@0: 				calendars.add(calendar);
michael@0: 			}
michael@0: 		}
michael@0: 		currentElement=null;
michael@0: 	}
michael@0: 
michael@0: 	private boolean isValidCalendar(DavCalendar calendar) {
michael@0: 		return calendar != null && calendar.getURI() != null
michael@0: 				&& calendar.getcTag() != null
michael@0: 				&& calendar.getCalendarDisplayName() != null;
michael@0: 	}
michael@0: }