C4/ClassSortRoutine/Generic.pm

   1 package C4::ClassSortRoutine::Generic;
   2
   3 # Copyright (C) 2007 LibLime
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use strict;
  21 use warnings;
  22
  23
  24
  25 =head1 NAME
  26
  27 C4::ClassSortRoutine::Generic - generic call number sorting key routine
  28
  29 =head1 SYNOPSIS
  30
  31 use C4::ClassSortRoutine;
  32
  33 my $cn_sort = GetClassSortKey('Generic', $cn_class, $cn_item);
  34
  35 =head1 FUNCTIONS
  36
  37 =head2 get_class_sort_key
  38
  39   my $cn_sort = C4::ClassSortRoutine::Generic::Generic($cn_class, $cn_item);
  40
  41 Generates sorting key using the following rules:
  42
  43 * Concatenates class and item part.
  44 * Removes leading and trailing whitespace.
  45 * Converts each run of whitespace to an underscore.
  46 * Converts to upper-case and removes non-alphabetical, non-numeric, non-underscore characters.
  47
  48 =cut
  49
  50 sub get_class_sort_key {
  51     my ($cn_class, $cn_item) = @_;
  52
  53     $cn_class = '' unless defined $cn_class;
  54     $cn_item  = '' unless defined $cn_item;
  55     my $key = uc "$cn_class $cn_item";
  56     $key =~ s/^\s+//;
  57     $key =~ s/\s+$//;
  58     $key =~ s/\s+/_/g;
  59     $key =~ s/[^\p{IsAlnum}_]//g;
  60     return $key;
  61
  62 }
  63
  64 1;
  65
  66 =head1 AUTHOR
  67
  68 Koha Development Team <http://koha-community.org/>
  69
  70 =cut
  71