StatementCount.java

import java.io.*;

/**
 * Reads a Java source code file and displays a complexity count.  The
 * complexity count is obtained by counting the lines that contain
 * opening braces or semi-colons.  This is intended to approximate the
 * number of "real" lines of code in a program.
 *
 * @author Jim Glenn
 * @version 0.1 10/25/2004
 */

public class StatementCount
{
    /**
     * Displays the complexity count of a Java source code file.
     * The names of the files to count should be given in the
     * array argument.
     *
     * @param args contains the names of the files to count
     */

    public static void main(String[] args) throws IOException
    {
	for (int file = 0; file < args.length; file++)
	    {
		// open file

		BufferedReader in
		    = new BufferedReader(new FileReader(args[file]));

		// initialize complexity count

		int count = 0;

		// read lines until end of file

		String line;
		while ((line = in.readLine()) != null)
		    if (line.indexOf('{') != -1 || line.indexOf(';') != -1)
			count++;

		// output final complexity count

		if (args.length > 1)
		    System.out.print(args[file] + ": ");
		System.out.println(count);
	    }
    }
}

PNMPanel.java

import javax.swing.*;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;

public class PNMPanel extends JPanel
{
    /**
     * The image to display in this panel.
     */

    protected Image im;

    /**
     * The name of the file containing the image this panel will
     * display.
     */

    protected String filename;

    /**
     * A message to display in lieu of the image.  The message is
     * displayed before the file loads or of there is an error.
     */

    protected String message;

    /**
     * A flag that is set when an error has occurred reading the file.
     * This is intended to be used to signla that we should not try to
     * load the image even if <CODE>im</CODE> is <CODE>null</CODE>.
     */

    protected boolean error;

    /**
     * Creates a panel that displays the image in the file with the
     * given name.  If there is an error reading the file, an
     * error message will be displayed.
     *
     * @param fname the name of the file containing the image data to display
     */

    public PNMPanel(String fname)
    {
	message = "Loading " + fname;
	error = false;
	filename = fname;
    }

    /**
     * Reads the image data for this panel.  Sets <CODE>im</CODE> to
     * <CODE>null</CODE> if there is an error reading from the file;
     * in such cases <CODE>message</CODE> is set accordingly.
     */

    private void readImage()
    {
	try
	    {
		BufferedReader infile
		    = new BufferedReader(new FileReader(filename));

		// read format and check that it is P3

		String format = infile.readLine();
		if (!format.equals("P3"))
		    throw new Exception("Unexpected PNM file format: " + format);

		// read size and split into width and height

		String size = infile.readLine();
		StringTokenizer tok = new StringTokenizer(size);
		int width = Integer.parseInt(tok.nextToken());
		int height = Integer.parseInt(tok.nextToken());
		setPreferredSize(new Dimension(width, height));

		// read and ignore maximum (we assume it is 255)

		String max = infile.readLine();

		// make an image

		im = createImage(width, height);
		Graphics g = im.getGraphics();

		// read pixel data, one pixel per line, and stuff it into
		// the image

		for (int y = 0; y < height; y++)
		    for (int x = 0; x < width; x++)
			{
			    // read the color component values

			    String color = infile.readLine();
			    tok = new StringTokenizer(color);
			    int red = Integer.parseInt(tok.nextToken());
			    int green = Integer.parseInt(tok.nextToken());
			    int blue = Integer.parseInt(tok.nextToken());
   
			    // set the pixel in the image

			    g.setColor(new Color(red, green, blue));
			    g.drawLine(x, y, x, y);
			}
	    }
	catch (FileNotFoundException e)
	    {
		im = null;
		error = true;
		message = "Could not find " + filename;
	    }
	catch (IOException e)
	    {
		im = null;
		error = true;
		message = "Error reading " + filename;
	    }
	catch (Exception e)
	    {
		im = null;
		error = true;
		message = "Bad file format in " + filename;
	    }
    }

    /**
     * Draws this panel.
     *
     * @param g the context to draw in
     */

    public synchronized void paint(Graphics g)
    {
	// This isn't really the best way to do this but will do for
	// now -- the method is synchronized so if we get several repaints
	// before we load the image we won't start reading the file
	// for each one.

	if (error)
	    {
		g.setColor(getBackground());
		g.fillRect(0, 0, getWidth(), getHeight());
		g.setColor(getForeground());
		g.drawString(message, 0, 10);
	    }
	if (im == null)
	    {
		g.drawString(message, 0, 10);
		readImage();
	    }
	else
	    g.drawImage(im, 0, 0, null);
    }

    /**
     * Demo of PNMPanel.
     *
     * @param args contains the name of the file to display
     */

    public static void main(String[] args)
    {
	JPanel im;

	if (args.length == 0)
	    im = new PNMPanel("arsha_in_box_p3.pnm");
	else
	    im = new PNMPanel(args[0]);

	JFrame win = new JFrame();
	win.getContentPane().add(im);
	win.setSize(400, 400);
	win.setVisible(true);
    }
}

PNMPanel2.java

import javax.swing.*;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;

public class PNMPanel2 extends JPanel
{
    /**
     * The image to display in this panel.
     */

    protected Image im;

    /**
     * The name of the file containing the image this panel will
     * display.
     */

    protected String filename;

    /**
     * A message to display in lieu of the image.  The message is
     * displayed before the file loads or of there is an error.
     */

    protected String message;

    /**
     * A flag that is set when an error has occurred reading the file.
     * This is intended to be used to signla that we should not try to
     * load the image even if <CODE>im</CODE> is <CODE>null</CODE>.
     */

    protected boolean error;

    /**
     * Creates a panel that displays the image in the file with the
     * given name.  If there is an error reading the file, an
     * error message will be displayed.
     *
     * @param fname the name of the file containing the image data to display
     */

    public PNMPanel2(String fname)
    {
	message = "Loading " + fname;
	error = false;
	filename = fname;
    }

    /**
     * Reads the image data for this panel.  Sets <CODE>im</CODE> to
     * <CODE>null</CODE> if there is an error reading from the file;
     * in such cases <CODE>message</CODE> is set accordingly.
     */

    private void readImage()
    {
	try
	    {
		// open the file and prepare to tokenize it

		BufferedReader infile
		    = new BufferedReader(new FileReader(filename));

		StreamTokenizer tok = new StreamTokenizer(infile);
		tok.commentChar('#');
		
		// read format and check that it is P3

		if (tok.nextToken() != StreamTokenizer.TT_WORD || !tok.sval.equals("P3"))
		    throw new Exception("Unexpected PNM file format: " + filename);

		// read width, height, and max value (checking that they
		// are numbers)

		if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
		    throw new Exception("Unexpected PNM file format: " + filename);
		int width = (int)(tok.nval);

		if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
		    throw new Exception("Unexpected PNM file format: " + filename);
		int height = (int)(tok.nval);

		if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
		    throw new Exception("Unexpected PNM file format: " + filename);
		int max = (int)(tok.nval);


		// make an image

		im = createImage(width, height);
		Graphics g = im.getGraphics();

		// read pixel data, one pixel per line, and stuff it into
		// the image

		for (int y = 0; y < height; y++)
		    for (int x = 0; x < width; x++)
			{
			    // read the color component values

			    if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
				throw new Exception("Unexpected PNM file format: " + filename);

			    int red = (int)(tok.nval);
			    
			    if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
				throw new Exception("Unexpected PNM file format: " + filename);
			    int green = (int)(tok.nval);
			    
			    if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
				throw new Exception("Unexpected PNM file format: " + filename);
			    int blue = (int)(tok.nval);
   
			    // set the pixel in the image

			    g.setColor(new Color(red, green, blue));
			    g.drawLine(x, y, x, y);
			}
	    }
	catch (FileNotFoundException e)
	    {
		im = null;
		error = true;
		message = "Could not find " + filename;
	    }
	catch (IOException e)
	    {
		im = null;
		error = true;
		message = "Error reading " + filename;
	    }
	catch (Exception e)
	    {
		im = null;
		error = true;
		message = "Bad file format in " + filename;
	    }
    }

    /**
     * Draws this panel.
     *
     * @param g the context to draw in
     */

    public synchronized void paint(Graphics g)
    {
	// This isn't really the best way to do this but will do for
	// now -- the method is synchronized so if we get several repaints
	// before we load the image we won't start reading the file
	// for each one.

	if (error)
	    {
		g.setColor(getBackground());
		g.fillRect(0, 0, getWidth(), getHeight());
		g.setColor(getForeground());
		g.drawString(message, 0, 10);
	    }
	if (im == null)
	    {
		g.drawString(message, 0, 10);
		readImage();
	    }
	else
	    g.drawImage(im, 0, 0, null);
    }

    /**
     * Demo of PNMPanel.
     *
     * @param args contains the name of the file to display
     */

    public static void main(String[] args)
    {
	JPanel im;

	if (args.length == 0)
	    im = new PNMPanel2("arsha_in_box_p3.pnm");
	else
	    im = new PNMPanel2(args[0]);

	JFrame win = new JFrame();
	win.getContentPane().add(im);
	win.setSize(400, 400);
	win.setVisible(true);
    }
}

PNMPanel3.java

import javax.swing.*;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;

public class PNMPanel3 extends JPanel
{
    /**
     * The image to display in this panel.
     */

    protected Image im;

    /**
     * The name of the file containing the image this panel will
     * display.
     */

    protected String filename;

    /**
     * A message to display in lieu of the image.  The message is
     * displayed before the file loads or of there is an error.
     */

    protected String message;

    /**
     * A flag that is set when an error has occurred reading the file.
     * This is intended to be used to signla that we should not try to
     * load the image even if <CODE>im</CODE> is <CODE>null</CODE>.
     */

    protected boolean error;

    /**
     * Creates a panel that displays the image in the file with the
     * given name.  If there is an error reading the file, an
     * error message will be displayed.
     *
     * @param fname the name of the file containing the image data to display
     */

    public PNMPanel3(String fname)
    {
	message = "Loading " + fname;
	error = false;
	filename = fname;
    }

    /**
     * Reads the image data for this panel.  Sets <CODE>im</CODE> to
     * <CODE>null</CODE> if there is an error reading from the file;
     * in such cases <CODE>message</CODE> is set accordingly.
     */

    private void readImage()
    {
	try
	    {
		// open the file and prepare to tokenize it

		RandomAccessFile infile = new RandomAccessFile(filename, "r");

		// read the header and save it in a string for tokenizing

		String header = "";
		int headerLines = 0;
		while (headerLines < 3)
		    {
			String line = infile.readLine();
			header += line + "\n";
			if (!line.startsWith("#"))
			    headerLines++;
		    }

		// tokenize the header

		StreamTokenizer tok = new StreamTokenizer(new StringReader(header));
		tok.commentChar('#');
		
		// read format and check that it is P6

		if (tok.nextToken() != StreamTokenizer.TT_WORD || !tok.sval.equals("P6"))
		    throw new Exception("Unexpected PNM file format: " + filename);

		// read width, height, and max value (checking that they
		// are numbers)

		if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
		    throw new Exception("Unexpected PNM file format: " + filename);
		int width = (int)(tok.nval);

		if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
		    throw new Exception("Unexpected PNM file format: " + filename);
		int height = (int)(tok.nval);

		if (tok.nextToken() != StreamTokenizer.TT_NUMBER)
		    throw new Exception("Unexpected PNM file format: " + filename);
		int max = (int)(tok.nval);


		// make an image

		im = createImage(width, height);
		Graphics g = im.getGraphics();

		// read pixel data, three bytes per pixel, and stuff it into
		// the image

		for (int y = 0; y < height; y++)
		    for (int x = 0; x < width; x++)
			{
			    // read the color component values

			    int red = infile.readUnsignedByte();
			    int green = infile.readUnsignedByte();
			    int blue = infile.readUnsignedByte();
   
			    // set the pixel in the image

			    g.setColor(new Color(red, green, blue));
			    g.drawLine(x, y, x, y);
			}
	    }
	catch (FileNotFoundException e)
	    {
		im = null;
		error = true;
		message = "Could not find " + filename;
	    }
	catch (IOException e)
	    {
		im = null;
		error = true;
		message = "Error reading " + filename;
	    }
	catch (Exception e)
	    {
		e.printStackTrace(System.err);
		im = null;
		error = true;
		message = "Bad file format in " + filename;
	    }
    }

    /**
     * Draws this panel.
     *
     * @param g the context to draw in
     */

    public synchronized void paint(Graphics g)
    {
	// This isn't really the best way to do this but will do for
	// now -- the method is synchronized so if we get several repaints
	// before we load the image we won't start reading the file
	// for each one.

	if (error)
	    {
		g.setColor(getBackground());
		g.fillRect(0, 0, getWidth(), getHeight());
		g.setColor(getForeground());
		g.drawString(message, 0, 10);
	    }
	if (im == null)
	    {
		g.drawString(message, 0, 10);
		readImage();
	    }
	else
	    g.drawImage(im, 0, 0, null);
    }

    /**
     * Demo of PNMPanel.
     *
     * @param args contains the name of the file to display
     */

    public static void main(String[] args)
    {
	JPanel im;

	if (args.length == 0)
	    im = new PNMPanel3("arsha_in_box_p3.pnm");
	else
	    im = new PNMPanel3(args[0]);

	JFrame win = new JFrame();
	win.getContentPane().add(im);
	win.setSize(400, 400);
	win.setVisible(true);
    }
}