Method item

basex-core/src/main/java/org/basex/query/func/bin/BinFind.java:17–28

(final QueryContext qc, final InputInfo ii)

 */
public final class BinFind extends BinFn {
  @Override
  public Item item(final QueryContext qc, final InputInfo ii) throws QueryException {
    final Bin value = toBinOrNull(arg(0), qc);
    final Long offset = toLongOrNull(arg(1), qc);
    final Bin search = toBin(arg(2), qc);
    if(value == null) return Empty.VALUE;

    final byte[] bytes = value.binary(info);
    final int bl = bytes.length;
    final int pos = indexOf(bytes, search.binary(info), bounds(offset, null, bl)[0]);
    return pos == -1 ? Empty.VALUE : Itr.get(pos);
  }
}