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    package org.crsh.command.pipeline;
020    
021    import org.crsh.command.CommandContext;
022    import org.crsh.io.Consumer;
023    import org.crsh.io.Producer;
024    
025    import java.io.IOException;
026    import java.util.Map;
027    
028    /** @author Julien Viet */
029    public abstract class AbstractPipe<C, P, CONS extends CommandContext<? super P>> implements
030        Consumer<C>, Producer<P, CONS>,
031        CommandContext<C> {
032    
033      /** . */
034      protected final boolean piped;
035    
036      /** . */
037      protected CONS consumer;
038    
039      public AbstractPipe(boolean piped) {
040        this.piped = piped;
041        this.consumer = null;
042      }
043    
044      public boolean isPiped() {
045        return piped;
046      }
047    
048      public boolean takeAlternateBuffer() throws IOException {
049        return consumer.takeAlternateBuffer();
050      }
051    
052      public boolean releaseAlternateBuffer() throws IOException {
053        return consumer.releaseAlternateBuffer();
054      }
055    
056      public String getProperty(String propertyName) {
057        return consumer.getProperty(propertyName);
058      }
059    
060      public String readLine(String msg, boolean echo) {
061        return consumer.readLine(msg, echo);
062      }
063    
064      public Map<String, Object> getSession() {
065        return consumer.getSession();
066      }
067    
068      public Map<String, Object> getAttributes() {
069        return consumer.getAttributes();
070      }
071    
072      public int getWidth() {
073        return consumer.getWidth();
074      }
075    
076      public int getHeight() {
077        return consumer.getHeight();
078      }
079    
080      public void open(CONS consumer) {
081        this.consumer = consumer;
082      }
083    
084      public void flush() throws IOException {
085        consumer.flush();
086      }
087    
088      public void close() throws IOException {
089        consumer.close();
090      }
091    }