160 lines
3.4 KiB
Perl
160 lines
3.4 KiB
Perl
package C4::Input; #assumes C4/Input
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# Copyright 2000-2002 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
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# with Koha; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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use strict;
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use warnings;
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require Exporter;
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use C4::Context;
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use CGI;
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use vars qw($VERSION @ISA @EXPORT);
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# set the version for version checking
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$VERSION = 0.01;
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=head1 NAME
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C4::Input - Miscellaneous sanity checks
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=head1 SYNOPSIS
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use C4::Input;
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=head1 DESCRIPTION
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This module provides functions to see whether a given library card
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number or ISBN is valid.
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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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&checkdigit
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&buildCGIsort
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);
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=item checkdigit
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$valid = &checkdigit($cardnumber $nounique);
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Takes a card number, computes its check digit, and compares it to the
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checkdigit at the end of C<$cardnumber>. Returns a true value iff
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C<$cardnumber> has a valid check digit.
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=cut
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#'
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sub checkdigit ($;$) {
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my ($infl, $nounique) = @_;
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$infl = uc $infl;
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# Check to make sure the cardnumber is unique
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#FIXME: We should make the error for a nonunique cardnumber
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#different from the one where the checkdigit on the number is
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#not correct
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unless ( $nounique )
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{
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my $query=qq{SELECT * FROM borrowers WHERE cardnumber=?};
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my $sth=C4::Context->prepare($query);
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$sth->execute($infl);
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my %results = $sth->fetchrow_hashref();
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if ( $sth->rows != 0 )
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{
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return 0;
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}
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}
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if (C4::Context->preference("checkdigit") eq "none") {
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return 1;
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}
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my @weightings = (8,4,6,3,5,2,1);
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my $sum;
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foreach my $i (1..7) {
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my $temp1 = $weightings[$i-1];
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my $temp2 = substr($infl,$i,1);
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$sum += $temp1 * $temp2;
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}
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my $rem = ($sum%11);
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if ($rem == 10) {
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$rem = "X";
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}
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if ($rem eq substr($infl,8,1)) {
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return 1;
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}
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return 0;
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} # sub checkdigit
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=item buildCGISort
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$CGIScrollingList = &buildCGISort($name string, $input_name string);
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Returns the scrolling list with name $input_name, built on authorised Values named $name.
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Returns NULL if no authorised values found
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=cut
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sub buildCGIsort {
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my ($name,$input_name,$data) = @_;
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my $dbh=C4::Context->dbh;
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my $query=qq{SELECT * FROM authorised_values WHERE category=? order by lib};
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my $sth=$dbh->prepare($query);
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$sth->execute($name);
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my $CGISort;
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if ($sth->rows>0){
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my @values;
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my %labels;
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for (my $i =0;$i<$sth->rows;$i++){
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my $results = $sth->fetchrow_hashref;
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push @values, $results->{authorised_value};
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$labels{$results->{authorised_value}}=$results->{lib};
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}
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$CGISort= CGI::scrolling_list(
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-name => $input_name,
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-id => $input_name,
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-values => \@values,
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-labels => \%labels,
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-default=> $data,
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-size => 1,
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-multiple => 0);
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}
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$sth->finish;
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return $CGISort;
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}
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END { } # module clean-up code here (global destructor)
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1;
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__END__
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=back
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=head1 AUTHOR
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Koha Developement team <info@koha.org>
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=cut
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