113 lines
2.9 KiB
Perl
113 lines
2.9 KiB
Perl
# -*- tab-width: 8 -*-
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package C4::Members;
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# Copyright 2000-2003 Katipo Communications
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
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# Suite 330, Boston, MA 02111-1307 USA
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use strict;
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require Exporter;
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use C4::Context;
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use vars qw($VERSION @ISA @EXPORT @EXPORT_OK);
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$VERSION = 0.01;
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=head1 NAME
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C4::Members - Perl Module containing convenience functions for member handling
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=head1 SYNOPSIS
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=head1 DESCRIPTION
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=head1 FUNCTIONS
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=over 2
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=cut
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@ISA = qw(Exporter);
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@EXPORT = qw();
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@EXPORT_OK = qw(
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&fixup_cardnumber
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);
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################################################################################
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=item fixup_cardnumber
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Warning: The caller is responsible for locking the members table in write
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mode, to avoid database corruption.
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=cut
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use vars qw( @weightings );
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my @weightings = (8,4,6,3,5,2,1);
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sub fixup_cardnumber ($) {
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my($cardnumber) = @_;
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my $autonumber_members = C4::Context->boolean_preference('autoMemberNum');
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$autonumber_members = 0 unless defined $autonumber_members;
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# Find out whether member numbers should be generated
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# automatically. Should be either "1" or something else.
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# Defaults to "0", which is interpreted as "no".
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if ($cardnumber !~ /\S/ && $autonumber_members) {
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my $dbh = C4::Context->dbh;
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my $sth=$dbh->prepare("select max(substring(borrowers.cardnumber,2,7)) from borrowers");
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$sth->execute;
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my $data=$sth->fetchrow_hashref;
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$cardnumber=$data->{'max(substring(borrowers.cardnumber,2,7))'};
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$sth->finish;
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# purpose: generate checksum'd member numbers.
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# We'll assume we just got the max value of digits 2-8 of member #'s
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# from the database and our job is to increment that by one,
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# determine the 1st and 9th digits and return the full string.
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if (! $cardnumber) { # If DB has no values,
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$cardnumber = 1000000; # start at 1000000
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} else {
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$cardnumber += 1;
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}
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my $sum = 0;
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for (my $i = 0; $i < 8; $i += 1) {
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# read weightings, left to right, 1 char at a time
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my $temp1 = $weightings[$i];
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# sequence left to right, 1 char at a time
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my $temp2 = substr($cardnumber,$i,1);
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# mult each char 1-7 by its corresponding weighting
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$sum += $temp1 * $temp2;
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}
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my $rem = ($sum%11);
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$rem = 'X' if $rem == 10;
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$cardnumber="V$cardnumber$rem";
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}
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return $cardnumber;
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}
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1;
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