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
24 use vars qw($VERSION @ISA @EXPORT);
26 # set the version for version checking
31 &checkflds &checkdigit &checkvalidisbn
35 my ($env,$reqflds,$data) = @_;
36 my $numrflds = @$reqflds;
39 while ($i < $numrflds) {
40 if ($data->{@$reqflds[$i]} eq "") {
41 push(@probarr, @$reqflds[$i]);
51 my @weightings = (8,4,6,3,5,2,1);
57 my $temp1 = $weightings[$i-1];
58 my $temp2 = substr($infl,$i,1);
59 $sum = $sum + ($temp1*$temp2);
60 # print "$sum $temp1 $temp2<br>";
68 if ($rem eq substr($infl,8,1)) {
74 #--------------------------------------
75 # Determine if a number is a valid ISBN number, according to length
76 # of 10 digits and valid checksum
79 my ($q)=@_ ; # Input: ISBN number
81 my $isbngood = 0; # Return: true or false
83 $q=~s/x$/X/g; # upshift lower case X
87 my $checksum=substr($q,9,1);
88 my $isbn=substr($q,0,9);
91 for ($i=0; $i<9; $i++) {
92 my $digit=substr($q,$i,1);
95 $c=$c%11; # % is the modulus function
97 if ($c eq $checksum) {
108 } # sub checkvalidisbn
111 END { } # module clean-up code here (global destructor)