piecelistimpl.java

java 文件下载器。可自定义

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   PieceListImpl.java

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;

// Referenced classes of package org.gudy.azureus2.core3.disk.impl.piecemapper.impl:
//			PieceMapEntryImpl

public class PieceListImpl
	implements DMPieceList
{

	private final PieceMapEntryImpl pieces[];
	private final int cumulativeLengths[];

	public static PieceListImpl convert(List pieceList)
	{
		return new PieceListImpl((PieceMapEntryImpl[])(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];
	}
}