/**
 * $Id$
 * $Date$
 *
 */

package org.xmlsh.core;

import java.net.URL;
import java.util.List;
import org.xmlsh.sh.module.RootModule;
import org.xmlsh.sh.shell.Shell;
import org.xmlsh.xpath.ThreadLocalShell;

public abstract class BuiltinCommand extends AbstractCommand {

  // TODO : get Module from package or constructor
  public BuiltinCommand() {
    super(RootModule.getInstance());
  }

  private String mName;

  @Override
  public String getName() {
    return mName;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.xmlsh.core.ICommand#getType()
   */
  @Override
  public CommandType getType() {
    return CommandType.CMD_TYPE_BUILTIN;
  }

  abstract protected int run(List<XValue> args) throws Exception;

  @Override
  public int run(Shell shell, String cmd, List<XValue> args) throws Exception {

    mShell = shell;
    mEnvironment = shell.getEnv();
    mName = cmd;
    Shell saved_shell = ThreadLocalShell.set(shell);
    try {
      return run(args);
    } catch (UnknownOption e) {
      error(e);
      return -1;
    } catch (ThrowException e) {
      mLogger.trace("passing on ThrownException", e);
      throw e;
    } finally {
      ThreadLocalShell.set(saved_shell);
    }

  }

  @Override
  public URL getURL() {
    // Builtins have no URL
    return null;
  }

}
//
//
// Copyright (C) 2008-2014 David A. Lee.
//
// The contents of this file are subject to the "Simplified BSD License" (the
// "License");
// you may not use this file except in compliance with the License. You may
// obtain a copy of the
// License at http://www.opensource.org/licenses/bsd-license.php
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is David A. Lee
//
// Portions created by (your name) are Copyright (C) (your legal entity). All
// Rights Reserved.
//
// Contributor(s): none.
//