Code Duplication    Length = 8-8 lines in 2 locations

src/BibliographicRecord.php 2 locations

@@ 529-536 (lines=8) @@
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                    break;
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                // 020 - International Standard Book Number (R)
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                case 20:                                                            // Test added
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                    $isbn = $node->text('marc:subfield[@code="a"]');
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                    $isbn = preg_replace('/^([0-9\-xX]+).*$/', '\1', $isbn);
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                    if (empty($isbn)) {
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                        break;
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                    }
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                    array_push($isbns, $isbn);
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                    break;
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                // 022 - International Standard Serial Number (R)
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                case 22:                                                            // Test added
@@ 539-546 (lines=8) @@
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                    break;
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                // 022 - International Standard Serial Number (R)
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                case 22:                                                            // Test added
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                    $issn = $node->text('marc:subfield[@code="a"]');
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                    $issn = preg_replace('/^([0-9\-xX]+).*$/', '\1', $issn);
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                    if (empty($issn)) {
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                        break;
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                    }
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                    array_push($issns, $issn);
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                    break;
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                // 040 - Cataloging Source (NR)
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                case 40:                                                            // Test added