a6c9bd0eb5
Signed-off-by: Chris Nighswonger <cnighswonger@foundations.edu> Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com> Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de> http://bugs.koha-community.org/show_bug.cgi?id=9987 Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com> Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
106 lines
2.9 KiB
Perl
106 lines
2.9 KiB
Perl
package C4::ClassSortRoutine::Dewey;
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# Copyright (C) 2007 LibLime
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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
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# Koha is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# 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
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# along with Koha; if not, see <http://www.gnu.org/licenses>.
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use strict;
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use warnings;
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use vars qw($VERSION);
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# set the version for version checking
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$VERSION = 3.07.00.049;
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=head1 NAME
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C4::ClassSortRoutine::Dewey - generic call number sorting key routine
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=head1 SYNOPSIS
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use C4::ClassSortRoutine;
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my $cn_sort = GetClassSortKey('Dewey', $cn_class, $cn_item);
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=head1 FUNCTIONS
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=head2 get_class_sort_key
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my $cn_sort = C4::ClassSortRoutine::Dewey::Dewey($cn_class, $cn_item);
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Generates sorting key using the following rules:
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* Concatenates class and item part.
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* Converts to uppercase.
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* Removes leading and trailing whitespace and '/'
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* Separates alphabetic prefix from the rest of the call number
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* Splits into tokens on whitespaces and periods.
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* Leaves first digit group as is.
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* Converts second digit group to 15-digit long group, padded on right with zeroes.
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* Converts each run of whitespace to an underscore.
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* Removes any remaining non-alphabetical, non-numeric, non-underscore characters.
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=cut
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sub get_class_sort_key {
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my ($cn_class, $cn_item) = @_;
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$cn_class = '' unless defined $cn_class;
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$cn_item = '' unless defined $cn_item;
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my $init = uc "$cn_class $cn_item";
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$init =~ s/^\s+//;
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$init =~ s/\s+$//;
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$init =~ s/\// /g;
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$init =~ s!/!!g;
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$init =~ s/^([\p{IsAlpha}]+)/$1 /;
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my @tokens = split /\.|\s+/, $init;
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my $digit_group_count = 0;
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my $first_digit_group_idx;
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for (my $i = 0; $i <= $#tokens; $i++) {
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if ($tokens[$i] =~ /^\d+$/) {
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$digit_group_count++;
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if (1 == $digit_group_count) {
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$first_digit_group_idx = $i;
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}
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if (2 == $digit_group_count) {
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if ($i - $first_digit_group_idx == 1) {
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$tokens[$i] = sprintf("%-15.15s", $tokens[$i]);
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$tokens[$i] =~ tr/ /0/;
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} else {
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$tokens[$first_digit_group_idx] .= '_000000000000000'
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}
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}
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}
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}
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# Pad the first digit_group if there was only one
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if (1 == $digit_group_count) {
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$tokens[$first_digit_group_idx] .= '_000000000000000'
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}
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my $key = join("_", @tokens);
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$key =~ s/[^\p{IsAlnum}_]//g;
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return $key;
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}
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1;
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=head1 AUTHOR
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Koha Development Team <http://koha-community.org/>
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=cut
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