src/main/java/org/apache/maven/shared/io/scan/AbstractResourceInclusionScanner.java

/*
 * 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.
 */
package org.apache.maven.shared.io.scan;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;

import org.apache.maven.shared.io.scan.mapping.SourceMapping;
import org.apache.maven.shared.utils.io.DirectoryScanner;

/**
 * @author jdcasey
 * @version $Id$
 */
public abstract class AbstractResourceInclusionScanner implements ResourceInclusionScanner {
    private final List<SourceMapping> sourceMappings = new ArrayList<SourceMapping>();

    /** {@inheritDoc} */
    public final void addSourceMapping(SourceMapping sourceMapping) {
        sourceMappings.add(sourceMapping);
    }

    /**
     * @return The source mapping.
     */
    protected final List<SourceMapping> getSourceMappings() {
        return Collections.unmodifiableList(sourceMappings);
    }

    /**
     * @param sourceDir {@link File}
     * @param sourceIncludes source includes.
     * @param sourceExcludes source excludes.
     * @return The resulting sources.
     */
    protected String[] scanForSources(File sourceDir, Set<String> sourceIncludes, Set<String> sourceExcludes) {
        DirectoryScanner ds = new DirectoryScanner();
        ds.setFollowSymlinks(true);
        ds.setBasedir(sourceDir);

        String[] includes;
        if (sourceIncludes.isEmpty()) {
            includes = new String[0];
        } else {
            includes = (String[]) sourceIncludes.toArray(new String[sourceIncludes.size()]);
        }

        ds.setIncludes(includes);

        String[] excludes;
        if (sourceExcludes.isEmpty()) {
            excludes = new String[0];
        } else {
            excludes = (String[]) sourceExcludes.toArray(new String[sourceExcludes.size()]);
        }

        ds.setExcludes(excludes);
        ds.addDefaultExcludes();

        ds.scan();

        return ds.getIncludedFiles();
    }
}