/* Plotter application that is capable of reading pxgraph files.

@Author: Edward A. Lee and Christopher Hylands

@Version: $Id: PxgraphApplication.java,v 1.8 1999/08/19 01:42:15 cxh Exp $

@Copyright (c) 1997-1999 The Regents of the University of California.
All rights reserved.

Permission is hereby granted, without written agreement and without
license or royalty fees, to use, copy, modify, and distribute this
software and its documentation for any purpose, provided that the
above copyright notice and the following two paragraphs appear in all
copies of this software.

IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.

THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
ENHANCEMENTS, OR MODIFICATIONS.

                                                PT_COPYRIGHT_VERSION_2
                                                COPYRIGHTENDKEY
@ProposedRating red (eal@eecs.berkeley.edu)
@AcceptedRating red (cxh@eecs.berkeley.edu)
*/
package ptolemy.plot.compat;

import ptolemy.plot.*;

import java.io.*;
import java.net.URL;
import java.util.StringTokenizer;
import java.awt.Point;

//////////////////////////////////////////////////////////////////////////
//// PxgraphApplication

/**
An application that can plot data in pxgraph format.
To compile and run this application, do the following:
<pre>
    javac -classpath ../../.. PxgraphApplication.java
    java -classpath ../../.. ptolemy.plot.pxgraph.PxgraphApplication
</pre>
<p>
This class uses the helper class PxgraphParser to parse command-line
arguments and binary files.  See that class for documentation on
the formats.

@author Edward A. Lee
@version $Id: PxgraphApplication.java,v 1.8 1999/08/19 01:42:15 cxh Exp $
@see PxgraphParser
@see Plot
*/
public class PxgraphApplication extends PlotApplication {

    /** Construct a plot with no command-line arguments.
     *  It initially displays a sample plot.
     *  @exception Exception If command line arguments have problems.
     */
    public PxgraphApplication() throws Exception {
        this(null);
    }

    /** Construct a plot with the specified command-line arguments.
     *  @param args The command-line arguments.
     *  @exception Exception If command line arguments have problems.
     */
    public PxgraphApplication(String args[]) throws Exception {
        this(new Plot(), args);
    }

    /** Construct a plot with the specified command-line arguments
     *  and instance of plot.
     *  @param args The command-line arguments.
     *  @exception Exception If command line arguments have problems.
     */
    public PxgraphApplication(Plot plot, String args[]) throws Exception {
        super(plot, args);
    }

    ///////////////////////////////////////////////////////////////////
    ////                         public methods                    ////

    /** Create a new plot window and map it to the screen.
     */
    public static void main(String args[]) {
        try {
            PlotApplication plot = new PxgraphApplication(new Plot(), args);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        // If the -test arg was set, then exit after 2 seconds.
        if (_test) {
            try {
                Thread.currentThread().sleep(2000);
            }
            catch (InterruptedException e) {
            }
            System.exit(0);
        }
    }

    /** Write the current data and plot configuration to the
     * specified stream.  This method is only used for testing.
     */
    public void write(OutputStream out, String dtd) {
        plot.write(out, dtd);
    }

    ///////////////////////////////////////////////////////////////////
    ////                         protected methods                 ////

    /** Display basic information about the application.
     */
    protected void _about() {
        Message message = new Message(
                "               pxgraph\n" +
                "        A Java Plotting Tool\n\n" +
                "By: Edward A. Lee, eal@eecs.berkeley.edu and\n" +
                "    Christopher Hylands, cxh@eecs.berkeley.edu\n" +
                "Version 3.1, Build: $Id: PxgraphApplication.java,v 1.8 1999/08/19 01:42:15 cxh Exp $\n\n"+
                "For help, type 'pxgraph -help', or see \n" +
                "the class documentation in the plot.pxgraph package.\n" +
                "For more information, see\n" +
                "http://ptolemy.eecs.berkeley.edu/java/ptplot\n");
        message.setTitle("About pxgraph");
        message.pack();
        message.show();
    }

    /** Parse those command-line arguments that are relevant to the
     *  application only, and refer other arguments to the PxgraphParser
     *  helper class.
     *  @return The number of arguments read.
     *  @exception CmdLineArgException If a command line argument cannot
     *   be parsed.
     *  @exception FileNotFoundException If an input file cannot be found.
     *  @exception IOException If there is a problem reading an input.
     */
    protected int _parseArgs(String args[]) throws CmdLineArgException,
            FileNotFoundException, IOException {
        int i = 0, j, argumentsRead;
        String arg;
        String title = "Ptolemy plot, pxgraph version";

        int width = 400;      // Default width of the graph
        int height = 300;     // Default height of the graph

        // Although most of the arguments are handled by the Plot class,
        // a few are dealt with here.
        while (args != null && i < args.length) {
            arg = args[i++];

            if (arg.equals("-help")) {
                // -help is not in the original X11 pxgraph.
                System.out.println(_usage());
                System.exit(0);
                continue;
            } else if (arg.equals("-test")) {
                // -test is not in the original X11 pxgraph.
                _test = true;
                continue;
            } else if (arg.equals("-t")) {
                // -t <title> TitleText "An X Graph"
                title =  args[i++];
                continue;
            } else if (arg.equals("-v") || arg.equals("-version")) {
                // -version is not in the original X11 pxgraph.
                System.out.println("Version 3.1, Build $Id: PxgraphApplication.java,v 1.8 1999/08/19 01:42:15 cxh Exp $");
                System.exit(0);
                continue;
            } else if (arg.startsWith("=")) {
                // Process =WxH+X+Y
                int xscreen = 1, yscreen = 1;
                boolean screenlocationgiven = false;
                StringTokenizer stoken =
                    new StringTokenizer(arg.substring(1, arg.length()),
                            "=x-+");
                if (stoken.hasMoreTokens()) {
                    width = (int)Integer.valueOf(stoken.nextToken()).
                        intValue();
                }
                if (stoken.hasMoreTokens()) {
                    height = (int)Integer.valueOf(stoken.nextToken()).
                        intValue();
                }
                if (stoken.hasMoreTokens()) {
                    xscreen = (int)Integer.valueOf(stoken.nextToken()).
                        intValue();
                    screenlocationgiven = true;
                }
                if (stoken.hasMoreTokens()) {
                    yscreen = (int)Integer.valueOf(stoken.nextToken()).
                        intValue();
                    screenlocationgiven = true;
                }
                if (screenlocationgiven) {
                    // Note: we add one so that =800x200+0+0 will show up
                    // in the proper location.
                    setLocation(new Point(xscreen+1, yscreen+1));
                }
                continue;
            }
        }

        setSize(width, height);
        setTitle(title);

        argumentsRead = i++;

        if (_parser == null) {
            _parser = new PxgraphParser((Plot)plot);
        }
        _parser.parseArgs(args);
        return argumentsRead;
    }

    /** Read the specified stream.  This method assumes the stream
     *  contains pxgraph-compatible binary or ascii data.  If it is
     *  binary, then the -binary flag must have been specified on
     *  the command line.
     *  @param base The base for relative file references, or null if
     *   there are not relative file references.
     *  @param in The input stream.
     *  @exception IOException If the stream cannot be read.
     */
    protected void _read(URL base, InputStream in) throws IOException {
        _parser.read(in);
    }

    /** Return a string summarizing the command-line arguments.
     *  @return A usage string.
     */
    protected String _usage() {
        // We use a table here to keep things neat.
        // If we have:
        //  {"-bd",  "<color>", "Border",  "White", "(Unsupported)"},
        // -bd       - The argument
        // <color>   - The description of the value of the argument
        // Border    - The Xgraph file directive (not supported at this time).
        // White     - The default (not supported at this time)
        // "(Unsupported)" - The string that is printed to indicate if
        //                   a option is unsupported.
        String commandOptions[][] = {
            {"-bd",  "<color>", "Border",  "White", "(Unsupported)"},
            {"-bg",  "<color>", "BackGround",  "White", ""},
            {"-brb", "<base>", "BarBase",  "0", "(Unsupported)"},
            {"-brw", "<width>", "BarWidth",  "1", ""},
            {"-bw",  "<size>", "BorderSize",  "1", "(Unsupported)"},
            {"-fg",  "<color>", "Foreground",  "Black", ""},
            {"-gw",  "<pixels>", "GridStyle",  "1", "(Unsupported)"},
            {"-lf",  "<fontname>", "LabelFont",  "helvetica-12", ""},
            {"-lw",  "<width>", "LineWidth",  "0", "(Unsupported)"},
            {"-lx",  "<xl,xh>", "XLowLimit, XHighLimit",  "0", ""},
            {"-ly",  "<yl,yh>", "YLowLimit, YHighLimit",  "0", ""},
            // -o is not in the original X11 pxgraph.
            {"-o",   "<output filename>", "",  "/tmp/t.ps", ""},
            {"-t",   "<title>", "TitleText",  "An X Graph", ""},
            {"-tf",  "<fontname>", "TitleFont",  "helvetica-b-14", ""},
            {"-x",   "<unitName>", "XUnitText",  "X", ""},
            {"-y",   "<unitName>", "YUnitText",  "Y", ""},
            {"-zg",  "<color>", "ZeroColor",  "Black", "(Unsupported)"},
            {"-zw",  "<width>", "ZeroWidth",  "0", "(Unsupported)"},
        };

        String commandFlags[][] = {
            {"-bar", "BarGraph",  ""},
            {"-bb", "BoundBox",  "(Ignored)"},
            {"-bigendian", "",  ""},
            {"-littleendian", "",  ""},
            {"-binary", "Binary",  ""},
            // -impulses is not in the original X11 pxgraph.
            {"-impulses", "Impulses",  ""},
            {"-help", "",  ""},
            {"-lnx", "XLog",  ""},
            {"-lny", "YLog",  ""},
            {"-m", "Markers",  ""},
            {"-M", "StyleMarkers",  ""},
            {"-nl", "NoLines",  ""},
            {"-p", "PixelMarkers",  ""},
            {"-P", "LargePixel",  ""},
            {"-rv", "ReverseVideo",  ""},
            // -test is not in the original X11 pxgraph.  We use it for testing
            {"-test", "Test",  ""},
            {"-tk", "Ticks",  ""},
            // -v is not in the original X11 pxgraph.
            {"-v", "Version",  ""},
            {"-version", "Version",  ""},
        };
        String result = "Usage: ptplot [ options ] [=WxH+X+Y] [file ...]\n\n"
            + " options that take values as second args:\n";

        int i;
        for(i = 0; i < commandOptions.length; i++) {
            result += " " + commandOptions[i][0] +
                " " + commandOptions[i][1] +
                " " + commandOptions[i][4] + "\n";
        }
        result += "\nBoolean flags:\n";
        for(i = 0; i < commandFlags.length; i++) {
            result += " " + commandFlags[i][0] +
                " " + commandFlags[i][2] + "\n";
        }
        result += "\nThe following pxgraph features are not supported:\n"
            + " * Directives in pxgraph input files\n"
            + " * Xresources\n";
        return result;
    }

    ///////////////////////////////////////////////////////////////////
    ////                         private members                   ////

    // Parser.
    private PxgraphParser _parser;
}