54 lines
1.3 KiB
Java
54 lines
1.3 KiB
Java
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.signature.consumer;
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import java.util.Comparator;
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import org.bouncycastle.openpgp.PGPSignature;
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/**
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* Comparator which can be used to sort signatures with regard to their creation time.
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*/
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public class SignatureCreationDateComparator implements Comparator<PGPSignature> {
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public static final Order DEFAULT_ORDER = Order.OLD_TO_NEW;
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public enum Order {
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/**
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* Oldest signatures first.
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*/
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OLD_TO_NEW,
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/**
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* Newest signatures first.
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*/
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NEW_TO_OLD
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}
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private final Order order;
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/**
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* Create a new comparator which sorts signatures old to new.
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*/
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public SignatureCreationDateComparator() {
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this(DEFAULT_ORDER);
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}
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/**
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* Create a new comparator which sorts signatures according to the passed ordering.
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* @param order ordering
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*/
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public SignatureCreationDateComparator(Order order) {
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this.order = order;
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}
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@Override
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public int compare(PGPSignature one, PGPSignature two) {
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return order == Order.OLD_TO_NEW
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? one.getCreationTime().compareTo(two.getCreationTime())
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: two.getCreationTime().compareTo(one.getCreationTime());
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}
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}
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