Package dijjer.io.xfer

Source Code of dijjer.io.xfer.InputStreamBlockReceiver

/*
* Dijjer - A Peer to Peer HTTP Cache
* Copyright (C) 2004,2005 Change.Tv, Inc
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
package dijjer.io.xfer;

import java.io.IOException;
import java.io.InputStream;
import dijjer.io.comm.RetrievalException;
import dijjer.util.Buffer;

/**
* @author ian
*
* To change the template for this generated type comment go to Window - Preferences - Java - Code Generation - Code and
* Comments
*/
public class InputStreamBlockReceiver {

  PartiallyReceivedBlock _prb;
  InputStream _is;

  public InputStreamBlockReceiver(PartiallyReceivedBlock prb, InputStream is) {
    _prb = prb;
    _is = is;
  }

  public void start() throws IOException {
    try {
      for (int packet = 0; packet < _prb.getNumPackets(); packet++) {
        byte[] ret = new byte[_prb.getPacketSize()];
        int offset = 0;
        boolean eof = false; // If we reach the end of file then this will pad the rest of the block
                        // with 0s
        if (!eof) {
          while (offset < ret.length) {
            int r = _is.read(ret, offset, ret.length - offset);
            if (r == -1) {
              eof = true;
              break;
            }
            offset += r;
          }
        }
        _prb.addPacket(packet, new Buffer(ret));
      }
    } catch (IOException e) {
      _prb.abort(RetrievalException.IO_ERROR, e.getMessage());
      throw e;
    }
  }
}
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