/**
* Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.synapse.commons.json;
import org.apache.axis2.util.XMLChar;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.util.StreamReaderDelegate;
/**
* Processes special JSON keys that start with digits. <br/>
* eg. "12X12" <br/>
*/
final class JsonReaderDelegate extends StreamReaderDelegate {
private static final Log logger = LogFactory.getLog(JsonReaderDelegate.class.getName());
private boolean buildValidNCNames;
public JsonReaderDelegate(XMLStreamReader reader, boolean processNCNames) {
super(reader);
if (logger.isDebugEnabled()) {
logger.debug("#JsonReaderDelegate. Setting XMLStreamReader: " + reader.getClass().getName());
}
this.buildValidNCNames = processNCNames;
}
public String getLocalName() {
String localName = super.getLocalName();
String newName = localName;
if (localName == null || "".equals(localName)) {
return localName;
}
if (Character.isDigit(localName.charAt(0))) {
newName = Constants.PRECEDING_DIGIT + localName;
}
if (localName.charAt(0) == Constants.C_DOLLOR) {
newName = Constants.PRECEDING_DOLLOR + localName.substring(1);
}
if (buildValidNCNames) {
newName = toValidNCName(newName);
}
if (logger.isDebugEnabled()) {
logger.debug("#getLocalName. old=" + localName + ", new=" + newName);
}
return newName;
}
public QName getName() {
QName qName = super.getName();
String localName = qName.getLocalPart();
QName newName = qName;
if (localName == null || "".equals(localName)) {
return qName;
}
boolean checked = false;
if (Character.isDigit(localName.charAt(0))) {
localName = Constants.PRECEDING_DIGIT + localName;
if (buildValidNCNames) {
localName = toValidNCName(localName);
checked = true;
}
newName = new QName(qName.getNamespaceURI(), localName, qName.getPrefix());
}
if (localName.charAt(0) == Constants.C_DOLLOR) {
localName = Constants.PRECEDING_DOLLOR + localName.substring(1);
if (buildValidNCNames) {
localName = toValidNCName(localName);
checked = true;
}
newName = new QName(qName.getNamespaceURI(), localName, qName.getPrefix());
}
if (!checked && buildValidNCNames) {
String newNameP = toValidNCName(localName);
if (!localName.equals(newNameP)) {
newName = new QName(qName.getNamespaceURI(), newNameP, qName.getPrefix());
}
}
if (logger.isDebugEnabled()) {
logger.debug("#getName. old=" + localName + ", new=" + newName.getLocalPart());
}
return newName;
}
private String toValidNCName(String name) {
if (name == null || name.isEmpty()) {
return name;
}
int c, i = 0;
StringBuilder newName = new StringBuilder();
while (i < name.length() && ((c = name.charAt(i++)) != -1)) {
if (!XMLChar.isNCName(c)) {
newName.append(Constants.ID_KEY).append(c).append('_');
} else {
newName.append((char) c);
}
}
return name.length() == newName.length() ? name : newName.toString();
}
}