Java ReadableByteChannel Read readFully(final ReadableByteChannel channel, final ByteBuffer buf)

Description

read Fully

License

Apache License

Declaration

public static int readFully(final ReadableByteChannel channel, final ByteBuffer buf) throws IOException 

Method Source Code

//package com.java2s;
/*//  w ww  .ja va  2 s .com
 * @(#)$Id$$
 *
 * Copyright 2006-2008 Makoto YUI
 *
 * 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.
 * 
 * Contributors:
 *     Makoto YUI - initial implementation
 */

import java.io.EOFException;
import java.io.IOException;

import java.nio.ByteBuffer;

import java.nio.channels.FileChannel;
import java.nio.channels.ReadableByteChannel;

public class Main {
    public static int readFully(final ReadableByteChannel channel, final ByteBuffer buf) throws IOException {
        return readFully(channel, buf, buf.remaining());
    }

    public static int readFully(final ReadableByteChannel channel, final ByteBuffer buf, final int length)
            throws IOException {
        int n, count = 0;
        while (-1 != (n = channel.read(buf))) {
            count += n;
            if (count == length) {
                break;
            }
        }
        return count;
    }

    public static void readFully(final FileChannel channel, final ByteBuffer dst, final long position)
            throws IOException {
        while (dst.remaining() > 0) {
            if (-1 == channel.read(dst, position + dst.position())) {
                throw new EOFException();
            }
        }
    }

    public static void readFully(final FileChannel channel, final ByteBuffer dst, final long position,
            final int length) throws IOException {
        int n, count = 0;
        while (-1 != (n = channel.read(dst, position))) {
            count += n;
            if (count == length) {
                break;
            }
        }
    }
}

Related

1. readCharArray(ReadableByteChannel channel, ByteBuffer buffer, char[] charArray)
2. readFromAnerisChannel(ReadableByteChannel chan, ByteBuffer buffer)
3. readFromChannel(ReadableByteChannel channel, ByteBuffer buffer)
4. readFull(ReadableByteChannel ch, ByteBuffer dst)
5. readFully(final ReadableByteChannel channel, final ByteBuffer buf)
6. readFully(ReadableByteChannel channel, ByteBuffer b)
7. readFully(ReadableByteChannel channel, ByteBuffer buffer)
8. readLengthAndString(ReadableByteChannel channel, ByteBuffer buffer)
9. readMap(ReadableByteChannel channel, ByteBuffer buffer)