// $Header: /home/cvs/jakarta-jmeter/src/htmlparser/org/htmlparser/tests/codeMetrics/LineCounter.java,v 1.2 2004/02/10 13:41:10 woolfel Exp $
/*
 * ====================================================================
 * Copyright 2002-2004 The Apache Software Foundation.
 *
 * 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.
 * 
 */

// The developers of JMeter and Apache are greatful to the developers
// of HTMLParser for giving Apache Software Foundation a non-exclusive
// license. The performance benefits of HTMLParser are clear and the
// users of JMeter will benefit from the hard work the HTMLParser
// team. For detailed information about HTMLParser, the project is
// hosted on sourceforge at http://htmlparser.sourceforge.net/.
//
// HTMLParser was originally created by Somik Raha in 2000. Since then
// a healthy community of users has formed and helped refine the
// design so that it is able to tackle the difficult task of parsing
// dirty HTML. Derrick Oswald is the current lead developer and was kind
// enough to assist JMeter.

package org.htmlparser.tests.codeMetrics;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileReader;

public class LineCounter
{

    public int count(File file)
    {
        System.out.println("Handling " + file.getName());
        int count = 0;
        // Get all files in current directory
        if (file.isDirectory())
        {
            // Get the listing in this directory
            count = recurseDirectory(file, count);
        }
        else
        {
            // It is a file
            count = countLinesIn(file);
        }
        return count;
    }

    /** 
     * Counts code excluding comments and blank lines in the given file
     * @param file
     * @return int
     */
    public int countLinesIn(File file)
    {
        int count = 0;
        System.out.println("Counting " + file.getName());
        try
        {
            BufferedReader reader =
                new BufferedReader(new FileReader(file.getAbsolutePath()));
            String line = null;
            do
            {
                line = reader.readLine();
                if (line != null
                    && line.indexOf("*") == -1
                    && line.indexOf("//") == -1
                    && line.length() > 0)
                    count++;
            }
            while (line != null);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return count;
    }

    public int recurseDirectory(File file, int count)
    {
        File[] files = file.listFiles(new FileFilter()
        {
            public boolean accept(File file)
            {
                if (file.getName().indexOf(".java") != -1
                    || file.isDirectory())
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        });
        for (int i = 0; i < files.length; i++)
        {
            count += count(files[i]);
        }
        return count;
    }

    public static void main(String[] args)
    {
        LineCounter lc = new LineCounter();
        System.out.println("Line Count = " + lc.count(new File(args[0])));
    }
}