org.apache.commons.text.translate.UnicodeUnpairedSurrogateRemover 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.commons.text.translate;
import java.io.IOException;
import java.io.Writer;
/**
* Helper subclass to CharSequenceTranslator to remove unpaired surrogates.
*
* @since 1.0
*/
public class UnicodeUnpairedSurrogateRemover extends CodePointTranslator {
/**
* Implementation of translate that throws out unpaired surrogates.
* {@inheritDoc}
*/
@Override
public boolean translate(final int codepoint, final Writer out) throws IOException {
if (codepoint >= Character.MIN_SURROGATE && codepoint <= Character.MAX_SURROGATE) {
// It's a surrogate. Write nothing and say we've translated.
return true;
}
// It's not a surrogate. Don't translate it.
return false;
}
}