001/*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020package org.crsh.command;
021
022import java.io.IOException;
023import java.lang.reflect.UndeclaredThrowableException;
024import java.util.logging.Logger;
025
026public abstract class BaseCommand extends AbstractCommand {
027
028  /** . */
029  final Logger log = Logger.getLogger(getClass().getName());
030
031  /** The unmatched text, only valid during an invocation. */
032  protected String unmatched;
033
034  protected BaseCommand() {
035    this.unmatched = null;
036  }
037
038  protected final String readLine(String msg) {
039    return readLine(msg, true);
040  }
041
042  protected final String readLine(String msg, boolean echo) {
043    if (context instanceof InvocationContext) {
044      return ((InvocationContext)context).readLine(msg, echo);
045    } else {
046      throw new IllegalStateException("Cannot invoke read line without an invocation context");
047    }
048  }
049
050  public final String getUnmatched() {
051    return unmatched;
052  }
053
054
055  public final void execute(String s) throws ScriptException, IOException {
056    InvocationContext<?> context = peekContext();
057    CommandInvoker invoker = context.resolve(s);
058    invoker.open(context);
059    invoker.flush();
060    invoker.close();
061  }
062
063  public UndeclaredThrowableException toScript(Throwable cause) {
064    return new UndeclaredThrowableException(cause);
065  }
066}