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org.apache.cxf.staxutils.StreamWriterContentHandler Maven / Gradle / Ivy
/**
* 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 org.apache.cxf.staxutils;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.ext.LexicalHandler;
import org.apache.cxf.common.util.StringUtils;
/**
*
*/
public class StreamWriterContentHandler implements ContentHandler, LexicalHandler {
XMLStreamWriter writer;
Map mapping = new LinkedHashMap();
boolean inCDATA;
public StreamWriterContentHandler(XMLStreamWriter w) {
writer = w;
}
/**
* Method endDocument.
*
* @throws SAXException
*/
public void endDocument() throws SAXException {
// do nothing
}
/**
* Method startDocument.
*
* @throws SAXException
*/
public void startDocument() throws SAXException {
//
}
/**
* Method characters.
*
* @param ch
* @param start
* @param length
* @throws SAXException
*/
public void characters(char ch[], int start, int length) throws SAXException {
try {
if (inCDATA) {
writer.writeCData(new String(ch, start, length));
} else {
writer.writeCharacters(ch, start, length);
}
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
/**
* Method ignorableWhitespace.
*
* @param ch
* @param start
* @param length
* @throws SAXException
*/
public void ignorableWhitespace(char ch[], int start, int length) throws SAXException {
try {
writer.writeCharacters(ch, start, length);
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
/**
* Method endPrefixMapping.
*
* @param prefix
* @throws SAXException
*/
public void endPrefixMapping(String prefix) throws SAXException {
}
/**
* Method skippedEntity.
*
* @param name
* @throws SAXException
*/
public void skippedEntity(String name) throws SAXException {
}
/**
* Method setDocumentLocator.
*
* @param locator
*/
public void setDocumentLocator(Locator locator) {
}
/**
* Method processingInstruction.
*
* @param target
* @param data
* @throws SAXException
*/
public void processingInstruction(String target, String data)
throws SAXException {
}
/**
* Method startPrefixMapping.
*
* @param prefix
* @param uri
* @throws SAXException
*/
public void startPrefixMapping(String prefix, String uri)
throws SAXException {
mapping.put(prefix, uri);
try {
writer.setPrefix(prefix, uri);
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
/**
* Method endElement.
*
* @param namespaceURI
* @param localName
* @param qName
* @throws SAXException
*/
public void endElement(String namespaceURI,
String localName,
String qName) throws SAXException {
try {
writer.writeEndElement();
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
/**
* Method getPrefix.
* @param namespaceURI
*
* @param qname
* @return Returns String.
*/
private String getPrefix(String ns, String namespaceURI) {
int idx = ns.indexOf(':');
if (idx != -1) {
return ns.substring(0, idx);
} else if (namespaceURI != null && namespaceURI.length() > 0) {
//this is the case that have namespaceURI but use DEFAULT_NS_PREFIX
return "";
} else {
//this is the case that namespaceURI is just empty, so NS_PREFIX is null
return null;
}
}
/**
* Method startElement.
*
* @param namespaceURI
* @param localName
* @param qName
* @param atts
* @throws SAXException
*/
public void startElement(String namespaceURI,
String localName,
String qName,
Attributes atts) throws SAXException {
try {
String prefix = getPrefix(qName, namespaceURI);
// it is only the prefix we want to learn from the QName! so we can get rid of the
// spliting QName
if (prefix == null) {
writer.writeStartElement(namespaceURI, localName);
} else {
writer.writeStartElement(prefix, localName, namespaceURI);
}
if (!mapping.isEmpty() && atts != null) {
int attCount = atts.getLength();
for (int i = 0; i < attCount; i++) {
if (!StringUtils.isEmpty(atts.getURI(i))
&& atts.getQName(i).startsWith("xmlns")) {
String pfx = atts.getQName(i);
int idx = pfx.indexOf(':');
if (idx == -1) {
mapping.remove("");
writer.writeDefaultNamespace(atts.getValue(i));
} else {
pfx = pfx.substring(idx + 1);
mapping.remove(pfx);
writer.writeNamespace(pfx, atts.getValue(i));
}
}
}
}
for (Map.Entry e : mapping.entrySet()) {
if ("".equals(e.getKey())) {
writer.writeDefaultNamespace(e.getValue());
} else {
writer.writeNamespace(e.getKey(), e.getValue());
}
}
mapping.clear();
if (atts != null) {
int attCount = atts.getLength();
for (int i = 0; i < attCount; i++) {
if (StringUtils.isEmpty(atts.getURI(i))) {
String s = atts.getLocalName(i);
if (StringUtils.isEmpty(s)) {
s = atts.getQName(i);
}
writer.writeAttribute(s,
atts.getValue(i));
} else {
String pfx = atts.getQName(i);
if (!pfx.startsWith("xmlns")) {
if (pfx.indexOf(':') != -1) {
pfx = pfx.substring(0, pfx.indexOf(':'));
writer.writeAttribute(pfx,
atts.getURI(i),
atts.getLocalName(i),
atts.getValue(i));
} else {
writer.writeAttribute(atts.getURI(i),
atts.getLocalName(i),
atts.getValue(i));
}
}
}
}
}
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
public void startDTD(String name, String publicId, String systemId) throws SAXException {
}
public void endDTD() throws SAXException {
}
public void startEntity(String name) throws SAXException {
}
public void endEntity(String name) throws SAXException {
}
public void startCDATA() throws SAXException {
inCDATA = true;
}
public void endCDATA() throws SAXException {
inCDATA = false;
}
public void comment(char[] ch, int start, int length) throws SAXException {
try {
writer.writeComment(new String(ch, start, length));
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
}
