org.integratedmodelling.thinklab.commandline.Shell.java Source code

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Here is the source code for org.integratedmodelling.thinklab.commandline.Shell.java

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/**
 * Shell.java
 * ----------------------------------------------------------------------------------
 * 
 * Copyright (C) 2008 www.integratedmodelling.org
 * Created: Jan 17, 2008
 *
 * ----------------------------------------------------------------------------------
 * This file is part of Thinklab.
 * 
 * Thinklab is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Thinklab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with the software; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * ----------------------------------------------------------------------------------
 * 
 * @copyright 2008 www.integratedmodelling.org
 * @author    Ferdinando Villa (fvilla@uvm.edu)
 * @author    Ioannis N. Athanasiadis (ioannis@athanasiadis.info)
 * @date      Jan 17, 2008
 * @license   http://www.gnu.org/licenses/gpl.txt GNU General Public License v3
 * @link      http://www.integratedmodelling.org
 **/
package org.integratedmodelling.thinklab.commandline;

import java.io.IOException;

import jline.ConsoleReader;
import jline.Terminal;

import org.apache.commons.logging.Log;
import org.integratedmodelling.thinklab.command.Command;
import org.integratedmodelling.thinklab.command.CommandManager;
import org.integratedmodelling.thinklab.command.CommandParser;
import org.integratedmodelling.thinklab.configuration.LocalConfiguration;
import org.integratedmodelling.thinklab.exception.ThinklabException;
import org.integratedmodelling.thinklab.exception.ThinklabRuntimeException;
import org.integratedmodelling.thinklab.interfaces.applications.ISession;
import org.integratedmodelling.thinklab.interfaces.literals.IValue;
import org.integratedmodelling.thinklab.owlapi.Session;
import org.integratedmodelling.utils.MiscUtilities;

/**
 * A simple command-line driven interface. Just attach to a session, startConsole() and type 'help'.
 * @author Ferdinando Villa
 */
public class Shell {

    public ISession session;
    ConsoleReader console = null;

    public Shell(ISession session) {
        this.session = session;
    }

    public Shell() {
        try {
            this.session = new Session();
        } catch (ThinklabException e) {
            throw new ThinklabRuntimeException(e);
        }
    }

    public void printStatusMessage() throws IOException {

        console.printString("ThinkLab shell 0.1alpha\n");
        console.printString("System path: " + LocalConfiguration.getSystemPath() + "\n");
        console.printString("Data path: " + LocalConfiguration.getDataPath() + "\n");
        console.printString("\n");
        console.printString("Enter \'help\' for a list of commands; \'exit\' quits\n");
        console.printString("\n");
    }

    public void startConsole() throws Exception {

        Terminal.setupTerminal();
        this.console = new ConsoleReader();

        /* greet user */
        printStatusMessage();

        String input = "";

        /* define commands from user input */
        while (true) {

            input = console.readLine("> ");

            if (input == null)
                continue;

            if ("exit".equals(input)) {
                console.printString("shell terminated\n");
                break;
            } else if (!("".equals(input))) {

                try {

                    Command cmd = CommandParser.parse(input);

                    if (cmd == null)
                        continue;

                    IValue result = CommandManager.get().submitCommand(cmd, session);
                    if (result != null)
                        console.printString(result.toString() + "\n");
                } catch (ThinklabException e) {
                    e.printStackTrace();
                    console.printString(" error: " + e.getMessage() + "\n");
                }
            }
        }

    }

    public static void runScript(String s, ISession session, Log log) throws ThinklabException {

        for (String input : MiscUtilities.readFileIntoStrings(s)) {

            input = input.trim();
            if (input == null || input.isEmpty() || input.startsWith("#"))
                continue;

            if ("exit".equals(input)) {
                break;
            } else {

                try {

                    Command cmd = CommandParser.parse(input);

                    if (cmd == null)
                        continue;

                    IValue result = CommandManager.get().submitCommand(cmd, session);
                    if (result != null)
                        log.info(cmd + " -> " + result.toString());

                } catch (ThinklabException e) {
                    log.error("executing " + input, e);
                }
            }
        }

    }
}