7e044751ef
Signed-off-by: Chris Cormack <crc@liblime.com> Signed-off-by: Joshua Ferraro <jmf@liblime.com>
91 lines
2.4 KiB
Perl
91 lines
2.4 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place,
|
|
# Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
use strict;
|
|
require Exporter;
|
|
|
|
use vars qw($VERSION);
|
|
|
|
# set the version for version checking
|
|
$VERSION = 3.00;
|
|
|
|
=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) = @_;
|
|
|
|
my $init = uc "$cn_class $cn_item";
|
|
$init =~ s/^\s+//;
|
|
$init =~ s/\s+$//;
|
|
$init =~ s!/!!g;
|
|
$init =~ s/^([\p{IsAlpha}]+)/$1 /;
|
|
my @tokens = split /\.|\s+/, $init;
|
|
my $digit_group_count = 0;
|
|
for (my $i = 0; $i <= $#tokens; $i++) {
|
|
if ($tokens[$i] =~ /^\d+$/) {
|
|
$digit_group_count++;
|
|
if (2 == $digit_group_count) {
|
|
$tokens[$i] = sprintf("%-15.15s", $tokens[$i]);
|
|
$tokens[$i] =~ tr/ /0/;
|
|
}
|
|
}
|
|
}
|
|
my $key = join("_", @tokens);
|
|
$key =~ s/[^\p{IsAlnum}_]//g;
|
|
|
|
return $key;
|
|
|
|
}
|
|
|
|
1;
|
|
|
|
=head1 AUTHOR
|
|
|
|
Koha Developement team <info@koha.org>
|
|
|
|
=cut
|
|
|