1 package C4
::Input
; #assumes C4/Input
4 # Copyright 2000-2002 Katipo Communications
6 # This file is part of Koha.
8 # Koha is free software; you can redistribute it and/or modify it under the
9 # terms of the GNU General Public License as published by the Free Software
10 # Foundation; either version 2 of the License, or (at your option) any later
13 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
14 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License along with
18 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
19 # Suite 330, Boston, MA 02111-1307 USA
26 use vars
qw($VERSION @ISA @EXPORT);
28 # set the version for version checking
33 C4::Input - Miscellaneous sanity checks
41 This module provides functions to see whether a given library card
42 number or ISBN is valid.
52 &checkdigit &checkvalidisbn
58 $valid = &checkdigit($cardnumber $nounique);
60 Takes a card number, computes its check digit, and compares it to the
61 checkdigit at the end of C<$cardnumber>. Returns a true value iff
62 C<$cardnumber> has a valid check digit.
67 sub checkdigit
($;$) {
69 my ($infl, $nounique) = @_;
72 # Check to make sure the cardnumber is unique
74 #FIXME: We should make the error for a nonunique cardnumber
75 #different from the one where the checkdigit on the number is
80 my $query=qq{SELECT
* FROM borrowers WHERE cardnumber
=?
};
81 my $sth=C4
::Context
->prepare($query);
83 my %results = $sth->fetchrow_hashref();
84 if ( $sth->rows != 0 )
89 if (C4
::Context
->preference("checkdigit") eq "none") {
93 my @weightings = (8,4,6,3,5,2,1);
95 foreach my $i (1..7) {
96 my $temp1 = $weightings[$i-1];
97 my $temp2 = substr($infl,$i,1);
98 $sum += $temp1 * $temp2;
104 if ($rem eq substr($infl,8,1)) {
110 =item checkvalidisbn # Obsolete Function!
112 $valid = &checkvalidisbn($isbn);
114 Returns a true value iff C<$isbn> is a valid ISBN: it must be ten
115 digits long (counting "X" as a digit), and must have a valid check
118 sub checkvalidisbn ($) { # Obsolete Function!
119 my ($q) = shift or return undef;
122 /(\d{12})(X|\d)/i or return 0;
126 my $max = length $isbn;
127 for (my $i=0; $i<$max; $i++) {
128 my $digit=substr($q,$i,1);
132 ($c==10) and $c = 'X';
133 return ($c eq $checksum) ? 1 : 0;
138 $CGIScrollingList = &buildCGISort($name string, $input_name string);
140 Returns the scrolling list with name $input_name, built on authorised Values named $name.
141 Returns NULL if no authorised values found
146 my ($name,$input_name,$data) = @_;
147 my $dbh=C4
::Context
->dbh;
148 my $query=qq{SELECT
* FROM authorised_values WHERE category
=? order by lib
};
149 my $sth=$dbh->prepare($query);
150 $sth->execute($name);
156 for (my $i =0;$i<$sth->rows;$i++){
157 my $results = $sth->fetchrow_hashref;
158 push @values, $results->{authorised_value
};
159 $labels{$results->{authorised_value
}}=$results->{lib
};
162 $CGISort= CGI
::scrolling_list
(
163 -name
=> $input_name,
173 END { } # module clean-up code here (global destructor)
182 Koha Developement team <info@koha.org>