Java tutorial
/* * ============================================================================ * The Apache Software License, Version 1.1 * ============================================================================ * * Copyright (C) 2002 The Apache Software Foundation. All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- * tion, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. 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. * * 3. The end-user documentation included with the redistribution, if any, must * include the following acknowledgment: "This product includes software * developed by SuperBonBon Industries (http://www.sbbi.net/)." * Alternately, this acknowledgment may appear in the software itself, if * and wherever such third-party acknowledgments normally appear. * * 4. The names "UPNPLib" and "SuperBonBon Industries" must not be * used to endorse or promote products derived from this software without * prior written permission. For written permission, please contact * info@sbbi.net. * * 5. Products derived from this software may not be called * "SuperBonBon Industries", nor may "SBBI" appear in their name, * without prior written permission of SuperBonBon Industries. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 THE * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT,INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU- * DING, 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. * * This software consists of voluntary contributions made by many individuals * on behalf of SuperBonBon Industries. For more information on * SuperBonBon Industries, please see <http://www.sbbi.net/>. */ package net.sbbi.upnp.messages; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.xml.sax.Attributes; import org.xml.sax.SAXException; import net.sbbi.upnp.services.*; /** * Simple SAX handler for UPNP state variable query response message parsing, this message is in SOAP format * @author <a href="mailto:superbonbon@sbbi.net">SuperBonBon</a> * @version 1.0 */ public class StateVariableResponseParser extends org.xml.sax.helpers.DefaultHandler { private final static Log log = LogFactory.getLog(StateVariableResponseParser.class); private final static String SOAP_FAULT_EL = "Fault"; private ServiceStateVariable stateVar; private boolean faultResponse = false; private UPNPResponseException msgEx; private boolean readFaultCode = false; private boolean readFaultString = false; private boolean readErrorCode = false; private boolean readErrorDescription = false; private boolean parseStateVar = false; private StateVariableResponse result; protected StateVariableResponseParser(ServiceStateVariable stateVar) { this.stateVar = stateVar; } protected UPNPResponseException getUPNPResponseException() { return msgEx; } protected StateVariableResponse getStateVariableResponse() { return result; } public void characters(char[] ch, int start, int length) { if (parseStateVar) { String origChars = result.stateVariableValue; String newChars = new String(ch, start, length); if (origChars == null) { result.stateVariableValue = newChars; } else { result.stateVariableValue = origChars + newChars; } } else if (readFaultCode) { msgEx.faultCode = new String(ch, start, length); readFaultCode = false; } else if (readFaultString) { msgEx.faultString = new String(ch, start, length); readFaultString = false; } else if (readErrorCode) { String code = new String(ch, start, length); try { msgEx.detailErrorCode = Integer.parseInt(code); } catch (Throwable ex) { log.debug("Error during returned error code " + code + " parsing"); } readErrorCode = false; } else if (readErrorDescription) { msgEx.detailErrorDescription = new String(ch, start, length); readErrorDescription = false; } } public void startElement(String uri, String localName, String qName, Attributes attributes) { if (faultResponse) { if (localName.equals("faultcode")) { readFaultCode = true; } else if (localName.equals("faultstring")) { readFaultString = true; } else if (localName.equals("errorCode")) { readErrorCode = true; } else if (localName.equals("errorDescription")) { readErrorDescription = true; } } else if (localName.equals(SOAP_FAULT_EL)) { msgEx = new UPNPResponseException(); faultResponse = true; } else if (localName.equals("return") || localName.equals("varName")) { // some buggy implementations ( intel sample media server ) // do not use the specs compliant return element name but varName ... parseStateVar = true; result = new StateVariableResponse(); result.stateVar = stateVar; } } public void endElement(String uri, String localName, String qName) throws SAXException { // some buggy implementations ( intel sample media server ) // do not use the specs compliant return element name but varName ... if (localName.equals("return") || localName.equals("varName")) { parseStateVar = false; } } }