Java ByteBuffer Put writeOutputStreamWriter(String str, int offset, int count, OutputStream out, ByteBuffer bytes, CharsetEncoder encoder, Object lock)

Description

write Output Stream Writer

License

Apache License

Declaration

public static void writeOutputStreamWriter(String str, int offset, int count, OutputStream out,
            ByteBuffer bytes, CharsetEncoder encoder, Object lock) throws IOException 

Method Source Code

//package com.java2s;
/*/*from   ww w  . jav  a  2 s.co  m*/
 *  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.
 */

import java.io.IOException;

import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;

import java.nio.charset.CharsetEncoder;
import java.nio.charset.CoderResult;

public class Main {
    public static void writeOutputStreamWriter(String str, int offset, int count, OutputStream out,
            ByteBuffer bytes, CharsetEncoder encoder, Object lock) throws IOException {
        assertArrayIndex(str.length(), offset, count);
        CharBuffer chars = CharBuffer.wrap(str, offset, count + offset);
        convert(lock, encoder, bytes, chars, out);
    }

    public static void writeOutputStreamWriter(int oneChar, OutputStream out, ByteBuffer bytes,
            CharsetEncoder encoder, Object lock) throws IOException {
        synchronized (lock) {
            checkEncoder(encoder);
            CharBuffer chars = CharBuffer.wrap(new char[] { (char) oneChar });
            convert(lock, encoder, bytes, chars, out);
        }
    }

    public static void writeOutputStreamWriter(char[] buf, int offset, int count, OutputStream out,
            ByteBuffer bytes, CharsetEncoder encoder, Object lock) throws IOException {
        assertArrayIndex(buf.length, offset, count);
        CharBuffer chars = CharBuffer.wrap(buf, offset, count);
        convert(lock, encoder, bytes, chars, out);
    }

    private static void assertArrayIndex(int arrayLength, int offset, int length) {
        if (offset < 0 || length < 0) {
            throw new IndexOutOfBoundsException("Negative index specified");
        }
        if ((long) offset + (long) length > arrayLength) {
            throw new IndexOutOfBoundsException("Size mismatch");
        }
    }

    private static void convert(Object lock, CharsetEncoder encoder, ByteBuffer bytes, CharBuffer chars,
            OutputStream out) throws IOException {
        synchronized (lock) {
            checkEncoder(encoder);
            CoderResult result = encoder.encode(chars, bytes, true);
            while (true) {
                if (result.isError()) {
                    throw new IOException(result.toString());
                } else if (result.isOverflow()) {
                    // flush the output buffer
                    flushOutputStreamWriter(out, bytes, encoder, lock);
                    result = encoder.encode(chars, bytes, true);
                    continue;
                }
                break;
            }
        }
    }

    private static void checkEncoder(CharsetEncoder encoder) throws IOException {
        if (encoder == null) {
            throw new IOException("Writer is closed");
        }
    }

    public static void flushOutputStreamWriter(OutputStream out, ByteBuffer bytes, CharsetEncoder encoder,
            Object lock) throws IOException {
        synchronized (lock) {
            checkEncoder(encoder);
            int position;
            if ((position = bytes.position()) > 0) {
                bytes.flip();
                out.write(bytes.array(), 0, position);
                bytes.clear();
            }
            out.flush();
        }
    }
}

Related

1. writeByteBufferList(List list, DataOutputStream os)
2. writeBytes(OutputStream os, ByteBuffer buffer)
3. writeFully(ByteBuffer buffer, OutputStream os)
4. writeFully(OutputStream out, ByteBuffer buf)
5. writeOutputStream(OutputStream output, ByteBuffer data)
6. writePackedLong(ByteBuffer output, long value)
7. writeShortByteArray(ByteBuffer name, DataOutput out)
8. writeTo(ByteBuffer buffer, OutputStream out)
9. writeVarInt(ByteBuffer buffer, int input)