/*
* Created on Sep 1, 2003
* Copyright (C) 2003, 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* 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.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*/
package org.gudy.azureus2.core3.disk.impl.piecemapper.impl;
import java.util.List;
import org.gudy.azureus2.core3.disk.impl.piecemapper.DMPieceList;
import org.gudy.azureus2.core3.disk.impl.piecemapper.DMPieceMapEntry;
/**
* @author Moti
*
* PieceList contains a list of pieces; it also provides accessor and
* utility methods.
*/
public class
PieceListImpl
implements DMPieceList
{
final private PieceMapEntryImpl[] pieces;
final private int[] cumulativeLengths;
static public PieceListImpl
convert(
List pieceList)
{
return new PieceListImpl((PieceMapEntryImpl[])pieceList.toArray(new PieceMapEntryImpl[pieceList.size()]));
}
protected
PieceListImpl(
PieceMapEntryImpl[] _pieces)
{
pieces = _pieces;
cumulativeLengths = new int[pieces.length];
initializeCumulativeLengths();
}
private void
initializeCumulativeLengths()
{
int runningLength = 0;
for (int i = 0; i < pieces.length; i++) {
runningLength += pieces[i].getLength();
cumulativeLengths[i] = runningLength;
}
}
public int size() {
return pieces.length;
}
public DMPieceMapEntry get(int index) {
return pieces[index];
}
public int getCumulativeLengthToPiece(int index) {
return cumulativeLengths[index];
}
}