1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.text.translate; 18 19 import java.io.IOException; 20 import java.io.Writer; 21 22 /** 23 * Helper subclass to CharSequenceTranslator to remove unpaired surrogates. 24 * 25 * @since 1.0 26 */ 27 public class UnicodeUnpairedSurrogateRemover extends CodePointTranslator { 28 /** 29 * Implementation of translate that throws out unpaired surrogates. 30 * {@inheritDoc} 31 */ 32 @Override 33 public boolean translate(final int codePoint, final Writer writer) throws IOException { 34 // If true, it is a surrogate. Write nothing and say we've translated. Otherwise return false, and don't translate it. 35 return codePoint >= Character.MIN_SURROGATE && codePoint <= Character.MAX_SURROGATE; 36 } 37 } 38