1455d663d6
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz> Signed-off-by: Galen Charlton <galen.charlton@liblime.com>
93 lines
2.5 KiB
Perl
93 lines
2.5 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 under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the 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 along with
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# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
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# Suite 330, Boston, MA 02111-1307 USA
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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 = 3.00;
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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/^([\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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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 (2 == $digit_group_count) {
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$tokens[$i] = sprintf("%-15.15s", $tokens[$i]);
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$tokens[$i] =~ tr/ /0/;
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}
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}
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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 Developement team <info@koha.org>
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=cut
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