001    /*
002     * Copyright (C) 2003-2009 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.util;
020    
021    import java.io.ByteArrayOutputStream;
022    import java.io.IOException;
023    import java.io.InputStream;
024    import java.io.OutputStream;
025    
026    /**
027     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
028     * @version $Revision$
029     */
030    public class IO {
031    
032      public static byte[] readAsBytes(InputStream in) throws IOException {
033        return read(in).toByteArray();
034      }
035    
036      public static String readAsUTF8(InputStream in) {
037        try {
038          ByteArrayOutputStream baos = read(in);
039          return baos.toString("UTF-8");
040        }
041        catch (IOException e) {
042          e.printStackTrace();
043          return null;
044        }
045      }
046    
047      public static void copy(InputStream in, OutputStream out) throws IOException {
048        if (in == null) {
049          throw new NullPointerException();
050        }
051        try {
052          byte[] buffer = new byte[256];
053          for (int l = in.read(buffer); l != -1; l = in.read(buffer)) {
054            out.write(buffer, 0, l);
055          }
056        }
057        finally {
058          Safe.close(in);
059        }
060      }
061    
062      private static ByteArrayOutputStream read(InputStream in) throws IOException {
063        if (in == null) {
064          throw new NullPointerException();
065        }
066        ByteArrayOutputStream baos = new ByteArrayOutputStream();
067        copy(in, baos);
068        return baos;
069      }
070    }