net.nicoulaj.maven.plugins.checksum.execution.target.OneHashPerFileTarget Maven / Gradle / Ivy

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Compute project artifacts/dependencies/files checksum digests and output them to individual or summary files.

There is a newer version: 1.0

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/*
 * Copyright 2010 Julien Nicoulaud 
 *
 * 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.
 */
package net.nicoulaj.maven.plugins.checksum.execution.target;

import net.nicoulaj.maven.plugins.checksum.digest.DigesterFactory;

import org.codehaus.plexus.util.FileUtils;

import java.io.File;
import java.io.IOException;
import java.security.NoSuchAlgorithmException;

/**
 * An {@link ExecutionTarget} that writes digests to separate files.
 *
 * @author Julien Nicoulaud
 * @since 1.0
 */
public class OneHashPerFileTarget implements ExecutionTarget
{
    /**
     * Encoding to use for generated files.
     */
    protected String encoding;

    /**
     * Build a new instance of {@link OneHashPerFileTarget}.
     *
     * @param encoding the encoding to use for generated files.
     */
    public OneHashPerFileTarget( String encoding )
    {
        this.encoding = encoding;
    }

    /**
     * {@inheritDoc}
     */
    public void init()
    {
        // Nothing to do
    }

    /**
     * {@inheritDoc}
     */
    public void write( String digest, File file, String algorithm ) throws ExecutionTargetWriteException
    {
        try
        {
            FileUtils.fileWrite( file.getPath() + DigesterFactory.getInstance()
                                                                 .getFileDigester( algorithm )
                                                                 .getFileExtension(),
                                 digest );
        }
        catch ( IOException e )
        {
            throw new ExecutionTargetWriteException( e.getMessage() );
        }
        catch ( NoSuchAlgorithmException e )
        {
            throw new ExecutionTargetWriteException( e.getMessage() );
        }
    }

    /**
     * {@inheritDoc}
     */
    public void close()
    {
        // Nothing to do
    }
}