groovy.xml.markupsupport.StandardControlToUndefined 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 groovy.xml.markupsupport;
import java.util.Optional;
import java.util.function.Function;
public class StandardControlToUndefined implements Function> {
@Override
public Optional apply(Character ch) {
if (ch < 32 && !isXmlAllowedControl(ch)) {
return Optional.of("\uFFFD");
}
return Optional.empty();
}
private boolean isXmlAllowedControl(char ch) {
return ch == 9 || ch == 10 || ch == 12 || ch == 13;
}
}