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.IOContext;
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    import java.util.Map;
031    
032    class ToChunkPipeFilter implements Filter<Object, Chunk> {
033    
034      /** . */
035      private Filter<Chunk, ?> context;
036    
037      /** . */
038      private ChunkAdapter ca;
039    
040      public Class<Chunk> getProducedType() {
041        return Chunk.class;
042      }
043    
044      public Class<Object> getConsumedType() {
045        return Object.class;
046      }
047    
048      public void setPiped(boolean piped) {
049        context.setPiped(piped);
050      }
051    
052      public void open(final ProducerContext<Chunk> context) {
053        ca = new ChunkAdapter(new IOContext<Chunk>() {
054          public int getWidth() {
055            return context.getWidth();
056          }
057          public int getHeight() {
058            return context.getHeight();
059          }
060          public void provide(Chunk element) throws IOException {
061            ToChunkPipeFilter.this.context.provide(element);
062          }
063          public void flush() throws IOException {
064            ToChunkPipeFilter.this.context.flush();
065          }
066        });
067    
068        //
069        this.context = (Filter<Chunk, ?>)context;
070      }
071    
072      public void provide(Object element) throws ScriptException, IOException {
073        ca.provide(element);
074      }
075    
076      public void flush() throws ScriptException, IOException {
077        ca.flush();
078      }
079    
080      public void close() throws ScriptException {
081        context.close();
082      }
083    
084      public Map<String, Object> getSession() {
085        return context.getSession();
086      }
087    
088      public Map<String, Object> getAttributes() {
089        return context.getAttributes();
090      }
091    
092      public String getProperty(String propertyName) {
093        return context.getProperty(propertyName);
094      }
095    
096      public String readLine(String msg, boolean echo) {
097        return context.readLine(msg, echo);
098      }
099    
100      public int getWidth() {
101        return context.getWidth();
102      }
103    
104      public int getHeight() {
105        return context.getHeight();
106      }
107    }