Java String Decode by Charset pooledCharBuffer(int len, CharsetDecoder decoder)

Description

pooled Char Buffer

License

Apache License

Declaration

private static CharBuffer pooledCharBuffer(int len, CharsetDecoder decoder) 

Method Source Code

//package com.java2s;
/*// w ww.  j ava 2s .  c  o  m
 * Copyright 2011-2019 GatlingCorp (https://gatling.io)
 *
 * 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.nio.CharBuffer;

import java.nio.charset.CharsetDecoder;

public class Main {
    private static final ThreadLocal<CharBuffer> CHAR_BUFFERS = ThreadLocal
            .withInitial(() -> CharBuffer.allocate(1024));

    private static CharBuffer pooledCharBuffer(int len, CharsetDecoder decoder) {
        final int maxLength = (int) ((double) len * decoder.maxCharsPerByte());
        CharBuffer dst = CHAR_BUFFERS.get();
        if (dst.length() < maxLength) {
            dst = CharBuffer.allocate(maxLength);
            CHAR_BUFFERS.set(dst);
        } else {
            dst.clear();
        }
        return dst;
    }
}

Related

1. decodeWithDefaultCharSet(String urlToDecode)
2. getCharsetDecoder(String charsetName)
3. getDecoder(Charset charset)
4. getDecoder(Charset charset)
5. getDecoder(String charset)
6. reportingDecoder(Charset cset)
7. stringDecoder(String string, Charset charset)
8. unicodeCodePoint2PercentHexString(int codePoint, String charsetName)
9. urlDecode(final String str, final Charset encoding)