| /* |
| * 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.lang3; |
| |
| import java.nio.charset.Charset; |
| import java.nio.charset.UnsupportedCharsetException; |
| |
| /** |
| * Internal use only. |
| * <p> |
| * Provides utilities for {@link Charset}. |
| * </p> |
| * <p> |
| * Package private since Apache Commons IO already provides a Charsets because {@link Charset} is in |
| * {@code java.nio.charset}. |
| * </p> |
| * |
| * @since 3.10 |
| */ |
| class Charsets { |
| |
| /** |
| * Returns the given {@code charset} or the default Charset if {@code charset} is null. |
| * |
| * @param charset a Charset or null. |
| * @return the given {@code charset} or the default Charset if {@code charset} is null. |
| */ |
| static Charset toCharset(final Charset charset) { |
| return charset == null ? Charset.defaultCharset() : charset; |
| } |
| |
| /** |
| * Returns the given {@code charset} or the default Charset if {@code charset} is null. |
| * |
| * @param charsetName a Charset or null. |
| * @return the given {@code charset} or the default Charset if {@code charset} is null. |
| * @throws UnsupportedCharsetException If no support for the named charset is available in this instance of the Java |
| * virtual machine |
| */ |
| static Charset toCharset(final String charsetName) { |
| return charsetName == null ? Charset.defaultCharset() : Charset.forName(charsetName); |
| } |
| |
| /** |
| * Returns the given {@code charset} or the default Charset if {@code charset} is null. |
| * |
| * @param charsetName a Charset or null. |
| * @return the given {@code charset} or the default Charset if {@code charset} is null. |
| */ |
| static String toCharsetName(final String charsetName) { |
| return charsetName == null ? Charset.defaultCharset().name() : charsetName; |
| } |
| |
| } |