@Override
public byte[] getPiece(int piece) throws IOException {
if (!bitfield.getPiece(piece)) {
return null;
}
byte[] bs = new byte[metainfo.getPieceSize(piece)];
getUncheckedPiece(piece, bs);
return bs;
}
@Override
public List<Integer> missingSubpieces(int piece) {
List<Integer> result = new ArrayList<Integer>();
int subpiece;
if (bitfield.getPiece(piece)) {
System.out.println("bug");
}
for (int i = 0; i < BitField.NUM_SUBPIECES_PER_PIECE; i++) {
subpiece = piece * BitField.NUM_SUBPIECES_PER_PIECE + i;
if (!bitfield.get(subpiece)) {
result.add(subpiece);
}
if (subpiece == metainfo.getnbSubpieces() - 1) {
return result;
}
}
return result;
}
/**
* Returns a byte array containing the requested piece or null if the storage doesn't contain the
* piece yet.
*/
@Override
public Map<Integer, byte[]> getSubpieces(int piece) throws IOException {
if (!bitfield.getPiece(piece)) {
return null;
}
Map<Integer, byte[]> result = new HashMap<Integer, byte[]>();
int subpiece;
for (int i = 0; i < BitField.NUM_SUBPIECES_PER_PIECE; i++) {
subpiece = piece * BitField.NUM_SUBPIECES_PER_PIECE + i;
byte[] bs = new byte[metainfo.getSubpieceSize(subpiece)];
getUncheckedSubPiece(subpiece, bs, 0);
result.put(subpiece, bs);
if (subpiece == metainfo.getnbSubpieces() - 1) {
return result;
}
}
return result;
}