/**
* Copyright 2005-2011 Noelios Technologies.
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: LGPL 3.0 or LGPL 2.1 or CDDL 1.0 or EPL 1.0 (the
* "Licenses"). You can select the license that you prefer but you may not use
* this file except in compliance with one of these Licenses.
*
* You can obtain a copy of the LGPL 3.0 license at
* http://www.opensource.org/licenses/lgpl-3.0.html
*
* You can obtain a copy of the LGPL 2.1 license at
* http://www.opensource.org/licenses/lgpl-2.1.php
*
* You can obtain a copy of the CDDL 1.0 license at
* http://www.opensource.org/licenses/cddl1.php
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://www.noelios.com/products/restlet-engine
*
* Restlet is a registered trademark of Noelios Technologies.
*/
package org.restlet.ext.sip.internal;
import static org.restlet.engine.header.HeaderUtils.isComma;
import static org.restlet.engine.header.HeaderUtils.isSpace;
import java.io.IOException;
import org.restlet.data.Parameter;
import org.restlet.engine.header.HeaderReader;
import org.restlet.ext.sip.Event;
import org.restlet.ext.sip.EventType;
/**
* Event header reader.
*
* @author Thierry Boileau
*/
public class EventReader extends HeaderReader<Event> {
/**
* Constructor.
*
* @param header
* The header to read.
*/
public EventReader(String header) {
super(header);
}
/**
* Returns the value of the next segment.
*
* @return The value of the next segment
*/
public String readSegment() {
// Read value until end or space or point
StringBuilder sb = null;
skipSpaces();
int next = read();
while (next != -1) {
if (isSpace(next) || isComma(next)) {
// Unread the separator
unread();
next = -1;
} else if ((next == '.')) {
// ready for the next segment
next = -1;
} else {
if (sb == null) {
sb = new StringBuilder();
}
sb.append((char) next);
next = read();
}
}
return (sb == null) ? null : sb.toString();
}
@Override
public Event readValue() throws IOException {
Event result = null;
skipSpaces();
if (peek() != -1) {
EventType eventType = null;
String str = readSegment();
if (str != null) {
eventType = new EventType(str);
while ((str = readSegment()) != null) {
eventType.getEventTemplates().add(str);
}
result = new Event();
result.setType(eventType);
// Read event parameters.
if (skipParameterSeparator()) {
Parameter param = readParameter();
while (param != null) {
if ("id".equals(param.getName())) {
result.setId(param.getValue());
} else {
result.getParameters().add(param);
}
if (skipParameterSeparator()) {
param = readParameter();
} else {
param = null;
}
}
}
}
}
return result;
}
}