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.CharsetDecoder;
22
23 /**
24 * Works with {@link CharsetDecoder}.
25 *
26 * @since 2.12.0
27 */
28 public final class CharsetDecoders {
29
30 /**
31 * Returns the given non-null CharsetDecoder or a new default CharsetDecoder.
32 * <p>
33 * Null input maps to the virtual machine's {@link Charset#defaultCharset() default charset} decoder.
34 * </p>
35 *
36 * @param charsetDecoder The CharsetDecoder to test.
37 * @return the given non-null CharsetDecoder or a new default CharsetDecoder.
38 */
39 public static CharsetDecoder toCharsetDecoder(final CharsetDecoder charsetDecoder) {
40 return charsetDecoder != null ? charsetDecoder : Charset.defaultCharset().newDecoder();
41 }
42
43 /** No instances. */
44 private CharsetDecoders() {
45 // No instances.
46 }
47 }