Subversion Repositories programming

/*******************************************************************************

 * GanttChart.java

 *

 * Produces a beautiful Gantt Chart from a Vector of LogEntrys. This is

 * commonly produced by the Scheduler class and its derivatives.

 *

 * Copyright (c) 2006, Ira W. Snyder (devel@irasnyder.com)

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 ******************************************************************************/

import java.io.PrintStream;

import java.io.UnsupportedEncodingException;

import java.util.Vector;

/**

 * Produces a Gantt Chart from a Vector of LogEntrys. This is the output

 * of a Scheduler run.

 *

 * @class CS431 Fall 2006

 * @author Ira W. Snyder (devel@irasnyder.com)

 */

public class GanttChart

{

    /* Upper Left, Middle, and Right */

    private final String ul = "\u250c";

    private final String um = "\u252c";

    private final String ur = "\u2510";

    /* Lower Left, Middle, and Right */

    private final String ll = "\u251c";

    private final String lm = "\u253c";

    private final String lr = "\u2524";

    /* Horizonal and Vertical Bars */

    private final String hb = "\u2500";

    private final String vb = "\u2502";

    private final String ds = "   "; // 3 Spaces

    /* The log from the Scheduler class */

    private final Vector<LogEntry> log;

    /**

     * Constructor for the GanttChart class.

     *

     * @param log a log produced by the Scheduler class

     */

    public GanttChart (Vector<LogEntry> log)

    {

        this.log = log;

    }

    /**

     * Prints a beautiful Gantt Chart representation of the log

     * from a run of the Scheduler class.

     */

    public void printGanttChart ()

    {

        /* Each box will be constructed here */

        String top_temp  = new String();

        String name_temp = new String();

        String bot_temp  = new String();

        String labl_temp = new String();

        /* Each line will be constructed here */

        String top_line  = new String();

        String name_line = new String();

        String bot_line  = new String();

        String labl_line = new String();

        int exptime = 0;

        int templen;

        PrintStream out;

        /* Create the UTF-8 Capable PrintStream */

        try {

            out = new PrintStream (System.out, true, "UTF-8");

        } catch (UnsupportedEncodingException e) {

            System.err.println ("Unsupported Terminal, sorry...");

            System.err.println ("No pretty Gantt Charts... :(");

            return;

        }

        /* Run through every log entry in the order they were created, and add a

         * box to the output for each relevant one. */

        for (LogEntry e : log)

        {

            if (e.msg == LogEntry.MsgType.ADDED)

                continue;

            if (e.msg == LogEntry.MsgType.EXPIRE || e.msg == LogEntry.MsgType.COMPLETE)

            {

                exptime = e.time;

                continue;

            }

            /* Generate the "name" for this box */

            name_temp = vb + ds + e.proc.name + ds;

            /* Generate the "top" for this box */

            if (top_line.length() == 0)

                top_temp = ul;

            else

                top_temp = um;

            for (int i=0; top_temp.length() < name_temp.length(); i++)

                top_temp += hb;

            /* Generate the "bot" for this box */

            if (bot_line.length() == 0)

                bot_temp = ll;

            else

                bot_temp = lm;

            for (int i=0; bot_temp.length() < name_temp.length(); i++)

                bot_temp += hb;

            /* Generate the "labl" for this box */

            labl_temp = "" + e.time;

            for (int i=0; labl_temp.length() < name_temp.length(); i++)

                labl_temp += " ";

            /* Check if we need to wrap */

            if (name_line.length() + name_temp.length() > 79)

            {

                top_line  += ur;

                name_line += vb;

                bot_line  += lr;

                templen = labl_line.length() - String.valueOf(exptime).length();

                labl_line = labl_line.substring (0, templen+1) + String.valueOf(exptime);

                /* Print this line, since we're finished generating it */

                out.println (top_line);

                out.println (name_line);

                out.println (bot_line);

                out.println (labl_line);

                out.println ();

                /* Clear Lines */

                top_line  = new String();

                name_line = new String();

                bot_line  = new String();

                labl_line = new String(); 

                /* "Fix" the current box */

                top_temp = ul + top_temp.substring (1, top_temp.length());

                bot_temp = ll + bot_temp.substring (1, bot_temp.length());

            }

            top_line  += top_temp;

            name_line += name_temp;

            bot_line  += bot_temp;

            labl_line += labl_temp;

        }

        /* We're done with entries, so cap it off */

        top_line  += ur;

        name_line += vb;

        bot_line  += lr;

        templen = labl_line.length() - String.valueOf(exptime).length();

        labl_line = labl_line.substring (0, templen+1) + String.valueOf(exptime);

        /* Print this line, since we've run out of data */

        out.println (top_line);

        out.println (name_line);

        out.println (bot_line);

        out.println (labl_line);

        out.println ();

    }

}

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