org.kuali.maven.wagon.TransferProgressFileOutputStream Maven / Gradle / Ivy

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* forked from net.adamcin.org.kuali.maven.wagons:maven-s3-wagon This project is an implementation of a multi-threaded Wagon provider for accessing Amazon's Simple Storage Service (S3). It enables Maven to download files from and deploy files to S3. It draws heavily from code developed by Ben Hale at SpringSource

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/**
 * Copyright 2010-2015 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.
 */
package org.kuali.maven.wagon;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * An extension to the {@link FileOutputStream} that notifies
 * a @{link TransferProgress} object as it is being written to.
 *
 * @author Ben Hale
 * @since 1.1
 */
class TransferProgressFileOutputStream extends FileOutputStream {

    private TransferProgress progress;

    public TransferProgressFileOutputStream(File file, TransferProgress progress) throws FileNotFoundException {
        super(file);
        this.progress = progress;
    }

    public void write(int b) throws IOException {
        super.write(b);
        progress.notify(new byte[]{(byte) b}, 1);
    }

    public void write(byte b[]) throws IOException {
        super.write(b);
        progress.notify(b, b.length);
    }

    public void write(byte b[], int off, int len) throws IOException {
        super.write(b, off, len);
        if (off == 0) {
            progress.notify(b, len);
        } else {
            byte[] bytes = new byte[len];
            System.arraycopy(b, off, bytes, 0, len);
            progress.notify(bytes, len);
        }
    }
}