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Groovy: A powerful, dynamic language for the JVM
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package groovy.xml;
import groovy.util.BuilderSupport;
import java.util.Iterator;
import java.util.Map;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
/**
* A builder for generating W3C SAX events. Use similar to MarkupBuilder.
*
* @author James Strachan
*/
public class SAXBuilder extends BuilderSupport {
private ContentHandler handler;
private Attributes emptyAttributes = new AttributesImpl();
public SAXBuilder(ContentHandler handler) {
this.handler = handler;
}
protected void setParent(Object parent, Object child) {
}
protected Object createNode(Object name) {
doStartElement(name, emptyAttributes);
return name;
}
protected Object createNode(Object name, Object value) {
doStartElement(name, emptyAttributes);
doText(value);
return name;
}
/**
* @param value
*/
private void doText(Object value) {
try {
char[] text = value.toString().toCharArray();
handler.characters(text, 0, text.length);
}
catch (SAXException e) {
handleException(e);
}
}
protected Object createNode(Object name, Map attributeMap, Object text) {
AttributesImpl attributes = new AttributesImpl();
for (Iterator iter = attributeMap.entrySet().iterator(); iter.hasNext();) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object value = entry.getValue();
String uri = "";
String localName = null;
String qualifiedName = "";
String valueText = (value != null) ? value.toString() : "";
if (key instanceof QName) {
QName qname = (QName) key;
uri = qname.getNamespaceURI();
localName = qname.getLocalPart();
qualifiedName = qname.getQualifiedName();
}
else {
localName = key.toString();
qualifiedName = localName;
}
attributes.addAttribute(uri, localName, qualifiedName, "CDATA", valueText);
}
doStartElement(name, attributes);
if (text != null) {
doText(text);
}
return name;
}
protected void doStartElement(Object name, Attributes attributes) {
String uri = "";
String localName = null;
String qualifiedName = "";
if (name instanceof QName) {
QName qname = (QName) name;
uri = qname.getNamespaceURI();
localName = qname.getLocalPart();
qualifiedName = qname.getQualifiedName();
}
else {
localName = name.toString();
qualifiedName = localName;
}
try {
handler.startElement(uri, localName, qualifiedName, attributes);
}
catch (SAXException e) {
handleException(e);
}
}
protected void nodeCompleted(Object parent, Object name) {
String uri = "";
String localName = null;
String qualifiedName = "";
if (name instanceof QName) {
QName qname = (QName) name;
uri = qname.getNamespaceURI();
localName = qname.getLocalPart();
qualifiedName = qname.getQualifiedName();
}
else {
localName = name.toString();
qualifiedName = localName;
}
try {
handler.endElement(uri, localName, qualifiedName);
}
catch (SAXException e) {
handleException(e);
}
}
protected void handleException(SAXException e) {
throw new RuntimeException(e);
}
/* (non-Javadoc)
* @see groovy.util.BuilderSupport#createNode(java.lang.Object, java.util.Map, java.lang.Object)
*/
protected Object createNode(Object name, Map attributes) {
return createNode(name, attributes, null);
}
}