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    
020    package org.crsh.command;
021    
022    import org.crsh.shell.impl.command.spi.CommandInvoker;
023    
024    import java.io.IOException;
025    import java.lang.reflect.UndeclaredThrowableException;
026    import java.util.logging.Logger;
027    
028    public abstract class BaseCommand extends AbstractCommand {
029    
030      /** Need to find a way to make not that public. */
031      public final Logger log = Logger.getLogger(getClass().getName());
032    
033      /** The unmatched text, only valid during an invocation - Need to find a way to make not that public. */
034      public String unmatched;
035    
036      protected BaseCommand() {
037        this.unmatched = null;
038      }
039    
040      protected final String readLine(String msg) throws IOException, InterruptedException {
041        return readLine(msg, true);
042      }
043    
044      protected final String readLine(String msg, boolean echo) throws IOException, InterruptedException {
045        if (context instanceof InvocationContext) {
046          return ((InvocationContext)context).readLine(msg, echo);
047        } else {
048          throw new IllegalStateException("Cannot invoke read line without an invocation context");
049        }
050      }
051    
052      public final String getUnmatched() {
053        return unmatched;
054      }
055    
056    
057      public final void execute(String s) throws ScriptException, IOException {
058        InvocationContext<?> context = peekContext();
059        CommandInvoker invoker = context.resolve(s);
060        invoker.open(context);
061        invoker.flush();
062        invoker.close();
063      }
064    
065      public UndeclaredThrowableException toScript(Throwable cause) {
066        return new UndeclaredThrowableException(cause);
067      }
068    }