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 18 package org.apache.commons.io.charset; 19 20 import java.nio.charset.Charset; 21 import java.nio.charset.CharsetEncoder; 22 import java.util.function.Supplier; 23 24 /** 25 * Works with {@link CharsetEncoder}. 26 * 27 * @since 2.12.0 28 */ 29 public final class CharsetEncoders { 30 31 /** 32 * Returns the given non-null CharsetEncoder or a new default CharsetEncoder. 33 * 34 * @param charsetEncoder The CharsetEncoder to test. 35 * @return the given non-null CharsetEncoder or a new default CharsetEncoder. 36 */ 37 public static CharsetEncoder toCharsetEncoder(final CharsetEncoder charsetEncoder) { 38 return toCharsetEncoder(charsetEncoder, () -> Charset.defaultCharset().newEncoder()); 39 } 40 41 /** 42 * Returns the given non-null CharsetEncoder or a new default CharsetEncoder. 43 * 44 * @param charsetEncoder The CharsetEncoder to test. 45 * @param defaultSupplier The CharsetEncoder supplier to get when charsetEncoder is null. 46 * @return the given non-null CharsetEncoder or a new default CharsetEncoder. 47 * @since 2.13.0 48 */ 49 public static CharsetEncoder toCharsetEncoder(final CharsetEncoder charsetEncoder, final Supplier<CharsetEncoder> defaultSupplier) { 50 return charsetEncoder != null ? charsetEncoder : defaultSupplier.get(); 51 } 52 53 /** No instances. */ 54 private CharsetEncoders() { 55 // No instances. 56 } 57 58 }