| /* |
| * 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.oak.segment.util; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.CharBuffer; |
| import java.nio.charset.CharsetEncoder; |
| import java.nio.charset.CodingErrorAction; |
| |
| import java.nio.charset.StandardCharsets; |
| |
| /** |
| * Utility class related to encoding characters into (UTF-8) byte sequences. |
| */ |
| public class CharsetEncodingUtils { |
| |
| private CharsetEncodingUtils() { |
| } |
| |
| private static ThreadLocal<CharsetEncoder> CSE = new ThreadLocal<CharsetEncoder>() { |
| @Override |
| protected CharsetEncoder initialValue() { |
| CharsetEncoder e = StandardCharsets.UTF_8.newEncoder(); |
| e.onUnmappableCharacter(CodingErrorAction.REPORT); |
| e.onMalformedInput(CodingErrorAction.REPORT); |
| return e; |
| } |
| }; |
| |
| private static byte[] bytes(ByteBuffer b) { |
| byte[] a = new byte[b.remaining()]; |
| b.get(a); |
| return a; |
| } |
| |
| /** |
| * Like {@link String#getBytes(java.nio.charset.Charset)} (with "UTF-8"), |
| * except that encoding problems (like unpaired surrogates) are reported as |
| * exceptions (see {@link CodingErrorAction#REPORT}, instead of being |
| * silently replaces as it would happen otherwise. |
| * |
| * @param input |
| * String to encode |
| * @return String encoded using {@link StandardCharsets#UTF_8} |
| * @throws IOException |
| * on encoding error |
| */ |
| public static byte[] encodeAsUTF8(String input) throws IOException { |
| CharsetEncoder e = CSE.get(); |
| e.reset(); |
| return bytes(e.encode(CharBuffer.wrap(input.toCharArray()))); |
| } |
| } |