DefaultWagonDownload.java

package org.codehaus.mojo.wagon.shared;

/*
 * 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.File;
import java.util.Iterator;
import java.util.List;

import org.apache.maven.plugin.logging.Log;
import org.apache.maven.wagon.Wagon;
import org.apache.maven.wagon.WagonException;
import org.codehaus.plexus.util.StringUtils;

/**
 * @plexus.component role="org.codehaus.mojo.wagon.shared.WagonDownload" role-hint="default"
 */

public class DefaultWagonDownload
    implements WagonDownload
{

    public List getFileList( Wagon wagon, WagonFileSet fileSet, Log logger )
        throws WagonException
    {
        logger.info( "Scanning remote file system: " + wagon.getRepository().getUrl() + " ..." );

        WagonDirectoryScanner dirScan = new WagonDirectoryScanner();
        dirScan.setWagon( wagon );
        dirScan.setExcludes( fileSet.getExcludes() );
        dirScan.setIncludes( fileSet.getIncludes() );
        dirScan.setCaseSensitive( fileSet.isCaseSensitive() );
        dirScan.setDirectory( fileSet.getDirectory() );
        if ( fileSet.isUseDefaultExcludes() )
        {
            dirScan.addDefaultExcludes();
        }

        dirScan.scan();

        return dirScan.getFilesIncluded();
    }

    public void download( Wagon wagon, WagonFileSet remoteFileSet, Log logger )
        throws WagonException
    {
        List fileList = this.getFileList( wagon, remoteFileSet, logger );

        String url = wagon.getRepository().getUrl() + "/";
        
        if ( fileList.size() == 0 )
        {
            logger.info( "Nothing to download.");
            return;
        }

        for ( Iterator iterator = fileList.iterator(); iterator.hasNext(); )
        {
            String remoteFile = (String) iterator.next();

            File destination = new File( remoteFileSet.getDownloadDirectory() + "/" + remoteFile );

            if ( !StringUtils.isBlank( remoteFileSet.getDirectory() ) )
            {
                remoteFile = remoteFileSet.getDirectory() + "/" + remoteFile;
            }

            logger.info( "Downloading " + url + remoteFile + " to " + destination + " ..." );

            wagon.get( remoteFile, destination );
        }
    }

    /**
     * 
     * @param wagon - a Wagon instance
     * @param resource - Remote resource to check
     * @throws WagonException
     */
    public boolean exists( Wagon wagon, String resource )
        throws WagonException
    {
        return wagon.resourceExists( resource );
    }

}