/**
* DSS - Digital Signature Services
* Copyright (C) 2015 European Commission, provided under the CEF programme
*
* This file is part of the "DSS - Digital Signature Services" project.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package eu.europa.esig.dss.pdf;
import java.io.Serializable;
import java.util.Comparator;
/**
* This comparator is used to sort signatures by ByteRange
*/
public class PdfSignatureOrDocTimestampInfoComparator implements Comparator<PdfSignatureOrDocTimestampInfo>, Serializable {
private static final long serialVersionUID = 1451660656464810618L;
@Override
public int compare(PdfSignatureOrDocTimestampInfo o1, PdfSignatureOrDocTimestampInfo o2) {
/*
[0, 91747, 124517, 723]
[0, 126092, 158862, 626]
[0, 160367, 193137, 642]
*/
int[] byteRange1 = o1.getSignatureByteRange();
int[] byteRange2 = o2.getSignatureByteRange();
int totalLenght1 = byteRange1[2] + byteRange1[3];
int signedContentPre = byteRange2[1] - byteRange2[0];
return totalLenght1 < signedContentPre ? -1 : totalLenght1 == signedContentPre ? 0 : 1;
}
}