org.apache.cxf.staxutils.PropertiesExpandingStreamReader 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.Map;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.util.StreamReaderDelegate;
import org.apache.cxf.common.util.StringUtils;
/**
* A StreamReaderDelegate that expands property references in element and attribute values.
*
*/
public class PropertiesExpandingStreamReader extends StreamReaderDelegate {
public static final String DELIMITER = "@";
private final Map props;
public PropertiesExpandingStreamReader(XMLStreamReader reader, Map props) {
super(reader);
this.props = props;
}
protected String expandProperty(String value) {
if (StringUtils.isEmpty(value)) {
return value;
}
final int startIndx = value.indexOf(DELIMITER);
if (startIndx > -1) {
final int endIndx = value.lastIndexOf(DELIMITER);
if (endIndx > -1 && startIndx + 1 < endIndx) {
final String propName = value.substring(startIndx + 1, endIndx);
if (!StringUtils.isEmpty(propName)) {
final String envValue = props.get(propName);
if (!StringUtils.isEmpty(envValue)) {
return value.substring(0, startIndx) + envValue + value.substring(endIndx + 1);
}
}
}
}
return value;
}
@Override
public String getElementText() throws XMLStreamException {
return expandProperty(super.getElementText());
}
@Override
public String getAttributeValue(String namespaceURI, String localName) {
return expandProperty(super.getAttributeValue(namespaceURI, localName));
}
@Override
public String getAttributeValue(int index) {
return expandProperty(super.getAttributeValue(index));
}
@Override
public String getText() {
return expandProperty(super.getText());
}
}