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/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2006, University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.workflow;

import java.io.File;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;

public class RecursiveSearchForJavaFiles {

    public static void main(String args[]) {
        for (File f : search(new File(args[0]))) {
            System.out.println(f.getPath());
        }
    }

    public static Set search(File root) {
        Set result = new HashSet<>();
        Set directories = new HashSet<>();
        LinkedList worklist = new LinkedList<>();
        directories.add(root);
        worklist.add(root);
        while (!worklist.isEmpty()) {
            File next = worklist.removeFirst();
            File[] files = next.listFiles();
            if (files != null) {
                for (File f : files) {
                    if (f.getName().endsWith(".java")) {
                        result.add(f);
                    } else if (f.isDirectory() && directories.add(f)) {
                        worklist.add(f);
                    }

                }
            }

        }
        return result;

    }

}