/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, version 2 of the License.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. Look for COPYING file in the top folder.

  * If not, see http://opensource.org/licenses/GPL-2.0.

  */

 package org.apidesign.bck2brwsr.dew;

 import java.io.ByteArrayInputStream;

 import java.io.ByteArrayOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.io.OutputStream;

 import java.io.OutputStreamWriter;

 import java.io.Reader;

 import java.io.Writer;

 /**

  *

  * @author Tomas Zeuzla

  */

 class MemoryFileObject extends BaseFileObject {

     private byte[] content;

     private long lastModified;

     MemoryFileObject (

             String resourceName,

             Kind kind,

             byte[] content) {

         super(resourceName, kind);

         this.content = content;

         this.lastModified = this.content == null ?

             -1 :

             System.currentTimeMillis();

     }

     MemoryFileObject (

             String resourceName,

             byte[] content) {

         this(resourceName, getKind(resourceName) ,content);

     }

     @Override

     public InputStream openInputStream() throws IOException {

         if (content == null) {

             throw new IOException();

         } else {

             return new ByteArrayInputStream(content);

         }

     }

     @Override

     public OutputStream openOutputStream() throws IOException {

         return new CloseStream();

     }

     @Override

     public Reader openReader(boolean ignoreEncodingErrors) throws IOException {

         return new InputStreamReader(openInputStream());

     }

     @Override

     public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {

         if (content == null) {

             throw new IOException();

         } else {

             return new String(content);

         }

     }

     @Override

     public Writer openWriter() throws IOException {

         return new OutputStreamWriter(openOutputStream());

     }

     @Override

     public long getLastModified() {

         return lastModified;

     }

     @Override

     public boolean delete() {

         return false;

     }

     byte[] getContent() {

         return content;

     }

     private class CloseStream extends OutputStream {

         private final ByteArrayOutputStream delegate;

         CloseStream() {

             delegate = new ByteArrayOutputStream();

         }

         @Override

         public void write(int b) throws IOException {

             delegate.write(b);

         }

         @Override

         public void write(byte[] b) throws IOException {

             delegate.write(b);

         }

         @Override

         public void write(byte[] b, int off, int len) throws IOException {

             delegate.write(b, off, len);

         }

         @Override

         public void close() throws IOException {

             delegate.close();

             content = delegate.toByteArray();

             lastModified = System.currentTimeMillis();

         }                                    

     }

 }