Java Text File Read by Charset getDecoder(Charset charset, ThreadLocal> localDecoder)

Description

get Decoder

License

Apache License

Declaration

static CharsetDecoder getDecoder(Charset charset, ThreadLocal<Reference<CharsetDecoder>> localDecoder) 

Method Source Code

//package com.java2s;
/*/*from w  ww .  j  av  a  2s  . co  m*/
 * Copyright (C) 2012 Wayne Meissner
 *
 * This file is part of the JNR project.
 *
 * Licensed 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.
 */

import java.lang.ref.Reference;
import java.lang.ref.SoftReference;

import java.nio.charset.*;

public class Main {
    static CharsetDecoder getDecoder(Charset charset, ThreadLocal<Reference<CharsetDecoder>> localDecoder) {
        Reference<CharsetDecoder> ref = localDecoder.get();
        CharsetDecoder decoder;
        return ref != null && (decoder = ref.get()) != null && decoder.charset() == charset ? decoder
                : initDecoder(charset, localDecoder);
    }

    private static CharsetDecoder initDecoder(Charset charset,
            ThreadLocal<Reference<CharsetDecoder>> localDecoder) {
        CharsetDecoder decoder = charset.newDecoder();
        decoder.onMalformedInput(CodingErrorAction.REPLACE).onUnmappableCharacter(CodingErrorAction.REPLACE);
        localDecoder.set(new SoftReference<CharsetDecoder>(decoder));

        return decoder;
    }
}

Related

1. copy(Reader input, OutputStream output, Charset encoding)
2. createBOMStrippedReader(InputStream stream, String defaultCharset)
3. createBufferedReaderWithGuessedCharset(File file)
4. createInputStreamReader(File file, String charsetName)
5. createReader(Path p, Charset cs)
6. getFileContent(IFile file, String charset)
7. getInputStreamReader(InputStream stream, Charset charset)
8. getReader(InputStream in, String charsetName)
9. getReader(InputStream is, String charset)