/*
* 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.jackrabbit.core.session;
import java.text.Normalizer;
import java.text.Normalizer.Form;
import org.apache.jackrabbit.spi.Name;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Convenience class for checking/logging "weird" node names.
* <p>
* For now, it only checks that a node name being created uses NFC
*
* @see <a href="http://www.unicode.org/reports/tr15/tr15-23.html">http://www.unicode.org/reports/tr15/tr15-23.html</a>
*/
public class NodeNameNormalizer {
private static Logger log = LoggerFactory.getLogger(NodeNameNormalizer.class);
public static void check(Name name) {
if (log.isDebugEnabled()) {
String lname = name.getLocalName();
String normalized = Normalizer.normalize(lname, Form.NFC);
if (!lname.equals(normalized)) {
String message = "The new node name '" + dump(lname) + "' is not in Unicode NFC form ('" + dump(normalized) + "').";
log.debug(message, new Exception("Call chain"));
}
}
}
private static String dump(String lname) {
StringBuilder sb = new StringBuilder();
for (char c : lname.toCharArray()) {
if (c > ' ' && c < 127) {
sb.append(c);
} else {
sb.append(String.format("\\u%04x", (int) c));
}
}
return sb.toString();
}
}