001/*
002 * jPOS Project [http://jpos.org]
003 * Copyright (C) 2000-2026 jPOS Software SRL
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Affero General Public License as
007 * published by the Free Software Foundation, either version 3 of the
008 * License, or (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Affero General Public License for more details.
014 *
015 * You should have received a copy of the GNU Affero General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018
019package org.jpos.q2.cli;
020
021import org.jpos.core.DefaultLUHNCalculator;
022import org.jpos.q2.CLICommand;
023import org.jpos.q2.CLIContext;
024
025/** CLI command that computes the LUHN check digit for one or more PANs. */
026@SuppressWarnings("unused")
027public class CALCLUHN implements CLICommand {
028    /** Default constructor; no instance state to initialise. */
029    public CALCLUHN() {}
030    public void exec(CLIContext ctx, String[] args) throws Exception {
031        if (args.length < 2) {
032            ctx.println (String.format ("Usage: %span(s)", args[0]));
033            return;
034        }
035        DefaultLUHNCalculator calc = new DefaultLUHNCalculator();
036        for (int i=1; i<args.length; i++)
037            ctx.println(String.format("%s%c", args[i], calc.calculate(args[i])));
038    }
039}