GroovyShell.java :  » Scripting » caas » org » kisst » cordys » caas » main » Java Open Source

/**
Copyright 2008, 2009 Mark Hooijkaas

This file is part of the Caas tool.

The Caas tool 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.

The Caas tool 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 Caas tool.  If not, see <http://www.gnu.org/licenses/>.
*/

package org.kisst.cordys.caas.main;

import org.kisst.cordys.caas.util.ReflectionUtil;

public class GroovyShell extends CommandBase {
  public GroovyShell() { super("", "start a groovy shell"); }

  private Cli cli=new Cli();
  private Cli.StringOption terminal = cli.stringOption("t", "terminal", "choose the terminal type out of unix|win|none", null);
  
  @Override public void run(String[] args) {
    int code=0;
    args=cli.parse(args);
    if (terminal.isSet())
      setTerminal(terminal.get());

    SecurityManager psm = null;
    try {
      psm = System.getSecurityManager();
      Object shell = ReflectionUtil.createObject("org.codehaus.groovy.tools.shell.Groovysh");
      System.setSecurityManager((SecurityManager) ReflectionUtil.createObject("org.codehaus.groovy.tools.shell.util.NoExitSecurityManager"));
      ReflectionUtil.invoke(shell, "executeCommand", new Object[]{"import org.kisst.cordys.caas.Caas"});
      ReflectionUtil.invoke(shell, "run", new Object[]{args});
    }
    finally {
      System.setSecurityManager(psm);
    }
    System.exit(code);
  }

  @Override public String getHelp() { return "\nOPTIONS\n"+cli.getSyntax("\t"); } 
  
  private void setTerminal(String type) {
    if (type==null)
      return;

    if ("auto".equals(type))
      type = null;
    else if ("unix".equals(type))
      type = "jline.UnixTerminal";
    else if ("win".equals(type))
      type = "jline.WindowsTerminal";
    else if ("none".equals(type))
      type = "jline.UnsupportedTerminal";
    else
      throw new RuntimeException("unknown terminal type "+type);

        if (type != null)
            System.setProperty("jline.terminal", type);
    }
}