import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

/**
 * @author geoffreytowell
 * A small program to count the number of actual code lines...
 * excluding comments and blank lines
 * It still counts lines with only one character because I think it should
 */
public class Main
{
    /*
     * Method comment
     */
    public static void main(String[] args)
    {
	String filename;
	if (args.length > 0)
	    filename = args[0];
	else
	    filename = "/Users/geoffreytowell/eclipse-workspace/RealLineCount/src/Main.java";
	Scanner inScanner=null;
	// inline comment
	try
	{
	    inScanner = new Scanner(new File(filename));
	}
	catch (FileNotFoundException fex)
	{
	    System.err.println("No such File" + filename);
	}
	int lineCount =0;
	boolean inBlock=false;
	while (inScanner.hasNextLine())
	{
	    String line = inScanner.nextLine().replace(" ",  "").replace("\t", "");
	    if (line.contains("/*")  && line.contains("*\n"))
	    {
		// this still is not quite correct.  But it is closer and al least 
		// does not cause the code reader to skip over this line
		inBlock=true;
	    }
	    else if (inBlock && line.contains("*/"))
	    {
		inBlock=false;
	    }
	    else if (line.contains("//"))
	    {
		if (!line.substring(0,2).equals("//"))
		{
		    lineCount++;	
		}
	    }
	    else if (line.length()>0)
	    {
		if (!inBlock) lineCount++;
	    }
	    //System.out.println(lineCount + " " + line);
	}
	if (inScanner!=null)	    inScanner.close();
	System.out.println(lineCount);
    }
}