Koha/C4/ClassSortRoutine/Dewey.pm
Jonathan Druart 4c0e309677 Bug 16011: $VERSION - Remove use vars qw();
perl -p -i -e 's/use vars qw\(\s*\);\n//' **/*.pm

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>

Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
2016-03-24 17:20:39 +00:00

103 lines
2.8 KiB
Perl

package C4::ClassSortRoutine::Dewey;
# Copyright (C) 2007 LibLime
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Koha is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Koha; if not, see <http://www.gnu.org/licenses>.
use strict;
use warnings;
=head1 NAME
C4::ClassSortRoutine::Dewey - generic call number sorting key routine
=head1 SYNOPSIS
use C4::ClassSortRoutine;
my $cn_sort = GetClassSortKey('Dewey', $cn_class, $cn_item);
=head1 FUNCTIONS
=head2 get_class_sort_key
my $cn_sort = C4::ClassSortRoutine::Dewey::Dewey($cn_class, $cn_item);
Generates sorting key using the following rules:
* Concatenates class and item part.
* Converts to uppercase.
* Removes leading and trailing whitespace and '/'
* Separates alphabetic prefix from the rest of the call number
* Splits into tokens on whitespaces and periods.
* Leaves first digit group as is.
* Converts second digit group to 15-digit long group, padded on right with zeroes.
* Converts each run of whitespace to an underscore.
* Removes any remaining non-alphabetical, non-numeric, non-underscore characters.
=cut
sub get_class_sort_key {
my ($cn_class, $cn_item) = @_;
$cn_class = '' unless defined $cn_class;
$cn_item = '' unless defined $cn_item;
my $init = uc "$cn_class $cn_item";
$init =~ s/^\s+//;
$init =~ s/\s+$//;
$init =~ s/\// /g;
$init =~ s!/!!g;
$init =~ s/^([\p{IsAlpha}]+)/$1 /;
my @tokens = split /\.|\s+/, $init;
my $digit_group_count = 0;
my $first_digit_group_idx;
for (my $i = 0; $i <= $#tokens; $i++) {
if ($tokens[$i] =~ /^\d+$/) {
$digit_group_count++;
if (1 == $digit_group_count) {
$first_digit_group_idx = $i;
}
if (2 == $digit_group_count) {
if ($i - $first_digit_group_idx == 1) {
$tokens[$i] = sprintf("%-15.15s", $tokens[$i]);
$tokens[$i] =~ tr/ /0/;
} else {
$tokens[$first_digit_group_idx] .= '_000000000000000'
}
}
}
}
# Pad the first digit_group if there was only one
if (1 == $digit_group_count) {
$tokens[$first_digit_group_idx] .= '_000000000000000'
}
my $key = join("_", @tokens);
$key =~ s/[^\p{IsAlnum}_]//g;
return $key;
}
1;
=head1 AUTHOR
Koha Development Team <http://koha-community.org/>
=cut