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/*
* 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;
}
}
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