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.shell.impl.command;
021    
022    import org.crsh.io.ScreenContext;
023    import org.crsh.command.ScriptException;
024    import org.crsh.io.Filter;
025    import org.crsh.io.ProducerContext;
026    import org.crsh.text.Chunk;
027    import org.crsh.text.ChunkAdapter;
028    
029    import java.io.IOException;
030    
031    class ToChunkPipeFilter implements Filter<Object, Chunk> {
032    
033      /** . */
034      private Filter<Chunk, ?> context;
035    
036      /** . */
037      private ChunkAdapter ca;
038    
039      public Class<Chunk> getProducedType() {
040        return Chunk.class;
041      }
042    
043      public Class<Object> getConsumedType() {
044        return Object.class;
045      }
046    
047      public void setPiped(boolean piped) {
048        context.setPiped(piped);
049      }
050    
051      public void open(final ProducerContext<Chunk> context) {
052        ca = new ChunkAdapter(new ScreenContext<Chunk>() {
053          public int getWidth() {
054            return context.getWidth();
055          }
056          public int getHeight() {
057            return context.getHeight();
058          }
059          public void provide(Chunk element) throws IOException {
060            ToChunkPipeFilter.this.context.provide(element);
061          }
062          public void flush() throws IOException {
063            ToChunkPipeFilter.this.context.flush();
064          }
065        });
066    
067        //
068        this.context = (Filter<Chunk, ?>)context;
069      }
070    
071      public boolean takeAlternateBuffer() {
072        return context.takeAlternateBuffer();
073      }
074    
075      public boolean releaseAlternateBuffer() {
076        return context.releaseAlternateBuffer();
077      }
078    
079      public void provide(Object element) throws ScriptException, IOException {
080        ca.provide(element);
081      }
082    
083      public void flush() throws ScriptException, IOException {
084        ca.flush();
085      }
086    
087      public void close() throws ScriptException {
088        context.close();
089      }
090    
091      public String getProperty(String propertyName) {
092        return context.getProperty(propertyName);
093      }
094    
095      public String readLine(String msg, boolean echo) {
096        return context.readLine(msg, echo);
097      }
098    
099      public int getWidth() {
100        return context.getWidth();
101      }
102    
103      public int getHeight() {
104        return context.getHeight();
105      }
106    }