Java ByteBuffer Write writeFully(WritableByteChannel channel, ByteBuffer[] srcs)

Description

write Fully

License

Apache License

Declaration

public static long writeFully(WritableByteChannel channel, ByteBuffer[] srcs) throws IOException 

Method Source Code

//package com.java2s;
/**/*from  w  w w  . j av a 2s. c  om*/
 * 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.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.GatheringByteChannel;

import java.nio.channels.WritableByteChannel;

public class Main {
    public static long writeFully(WritableByteChannel channel, ByteBuffer[] srcs) throws IOException {
        long totalBytes = remaining(srcs);
        long bytesToWrite = totalBytes;
        long bytesWritten;

        do {
            bytesWritten = write(channel, srcs);
            bytesToWrite -= bytesWritten;
        } while (bytesToWrite > 0);

        return totalBytes;
    }

    public static void writeFully(FileOutputStream fos, ByteBuffer[] srcs) throws IOException {
        writeFully(fos.getChannel(), srcs);
    }

    public static long remaining(ByteBuffer[] bufs) {
        long byteCount = 0;

        for (int i = 0; i < bufs.length; i++) {
            byteCount += bufs[i].remaining();
        }

        return byteCount;
    }

    public static long write(WritableByteChannel channel, ByteBuffer[] srcs) throws IOException {
        if (channel instanceof GatheringByteChannel) {
            GatheringByteChannel gbc = (GatheringByteChannel) channel;
            return gbc.write(srcs);
        }

        long count = 0;

        for (ByteBuffer buf : srcs) {
            // Skip to the next byte buffer with bytes remaining
            if (!buf.hasRemaining()) {
                continue;
            }

            count += channel.write(buf);

            // Bail if the current byte buffer couldn't be consumed
            if (buf.hasRemaining()) {
                break;
            }
        }

        return count;
    }
}

Related

1. writeFully(FileChannel fc, ByteBuffer buf, long offset)
2. writeFully(FileChannel fileChannel, long filePosition, ByteBuffer buffer)
3. writeFully(final FileChannel channel, final ByteBuffer dst, final long position)
4. writeFully(final WritableByteChannel channel, final ByteBuffer buf)
5. writeFully(WritableByteChannel bc, ByteBuffer buf)
6. writeHalf(final ByteBuffer buf, final int value)
7. writeHeader(int type, ByteBuffer lengthBuffer, ByteBuffer buffer)
8. writeHeaderAndLsd(ByteBuffer out, int width, int height, boolean hasGct, int gctSize)
9. writeHexString(ByteBuffer buffer, String hex)