75 lines
2.2 KiB
Perl
75 lines
2.2 KiB
Perl
package C4::ClassSplitRoutine::Dewey;
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# Copyright 2018 Koha Development Team
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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 <https://www.gnu.org/licenses>.
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use Modern::Perl;
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=head1 NAME
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C4::ClassSplitRoutine::Dewey - Dewey call number split method
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=head1 SYNOPSIS
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use C4::ClassSplitRoutine;
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my $cn_split = C4::ClassSplitRoutine::Dewey::split_callnumber($cn_item);
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=head1 FUNCTIONS
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=head2 split_callnumber
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my $cn_split = C4::ClassSplitRoutine::Dewey::split_callnumber($cn_item);
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=cut
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sub split_callnumber {
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my ($cn_item) = @_;
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my $possible_decimal = qr/\d{3,}(?:\.\d+)?/; # at least three digits for a DDCN
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$cn_item =~ s/\///g
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; # in theory we should be able to simply remove all segmentation markers and arrive at the correct call number...
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my (@lines) = $cn_item =~ m/
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^([-a-zA-Z]*\s?(?:$possible_decimal)?) # R220.3 CD-ROM 787.87 # will require extra splitting
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\s+
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(.+) # H2793Z H32 c.2 EAS # everything else (except bracketing spaces)
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\s*
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/x;
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unless (@lines) {
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warn sprintf( 'regexp failed to match string: %s', $cn_item );
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push @lines, $cn_item; # if no match, just push the whole string.
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}
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if ( $lines[0] =~ /^([-a-zA-Z]+)\s?($possible_decimal)$/ ) {
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shift @lines; # pull off the matching first element, like example 1
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unshift @lines, $1, $2; # replace it with the two pieces
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}
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push @lines, split /\s+/,
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pop @lines; # split the last piece into an arbitrary number of pieces at spaces
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return @lines;
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}
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1;
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=head1 AUTHOR
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Koha Development Team <https://koha-community.org/>
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=cut
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