From fa7e8e493e71d3358aa64c3454f171af2e8b941f Mon Sep 17 00:00:00 2001
From: =?utf8?q?Fr=C3=A9d=C3=A9ric=20Demians?= <f.demians@tamil.fr>
Date: Mon, 30 Mar 2009 08:42:22 +0200
Subject: [PATCH] Fix Amazon cover for UNIMARC

In UNIMARC, 010 tag contains ISBN. In UNIMARC, ISBN with '-'
are valid. This patch modify ISBN normalization in order to
automaticaly suppress '-' before sending ISBN to Amazon
to get book cover.

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>
Signed-off-by: Henri-Damien LAURENT <henridamien.laurent@biblibre.com>
---
 C4/Koha.pm | 126 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)

diff --git a/C4/Koha.pm b/C4/Koha.pm
index 10fccbebd8..2ebf4a98ed 100644
--- a/C4/Koha.pm
+++ b/C4/Koha.pm
@@ -1132,6 +1132,132 @@ sub display_marc_indicators {
     return $indicators;
 }
 
+sub GetNormalizedUPC {
+ my ($record,$marcflavour) = @_;
+    my (@fields,$upc);
+
+    if ($marcflavour eq 'MARC21') {
+        @fields = $record->field('024');
+        foreach my $field (@fields) {
+            my $indicator = $field->indicator(1);
+            my $upc = _normalize_match_point($field->subfield('a'));
+            if ($indicator == 1 and $upc ne '') {
+                return $upc;
+            }
+        }
+    }
+    else { # assume unimarc if not marc21
+        @fields = $record->field('072');
+        foreach my $field (@fields) {
+            my $upc = _normalize_match_point($field->subfield('a'));
+            if ($upc ne '') {
+                return $upc;
+            }
+        }
+    }
+}
+
+# Normalizes and returns the first valid ISBN found in the record
+sub GetNormalizedISBN {
+    my ($isbn,$record,$marcflavour) = @_;
+    my @fields;
+    if ($isbn) {
+        return _isbn_cleanup($isbn);
+    }
+    return undef unless $record;
+
+    if ($marcflavour eq 'MARC21') {
+        @fields = $record->field('020');
+        foreach my $field (@fields) {
+            $isbn = $field->subfield('a');
+            if ($isbn) {
+                return _isbn_cleanup($isbn);
+            } else {
+                return undef;
+            }
+        }
+    }
+    else { # assume unimarc if not marc21
+        @fields = $record->field('010');
+        foreach my $field (@fields) {
+            my $isbn = $field->subfield('a');
+            if ($isbn) {
+                return _isbn_cleanup($isbn);
+            } else {
+                return undef;
+            }
+        }
+    }
+
+}
+
+sub GetNormalizedEAN {
+    my ($record,$marcflavour) = @_;
+    my (@fields,$ean);
+
+    if ($marcflavour eq 'MARC21') {
+        @fields = $record->field('024');
+        foreach my $field (@fields) {
+            my $indicator = $field->indicator(1);
+            $ean = _normalize_match_point($field->subfield('a'));
+            if ($indicator == 3 and $ean ne '') {
+                return $ean;
+            }
+        }
+    }
+    else { # assume unimarc if not marc21
+        @fields = $record->field('073');
+        foreach my $field (@fields) {
+            $ean = _normalize_match_point($field->subfield('a'));
+            if ($ean ne '') {
+                return $ean;
+            }
+        }
+    }
+}
+sub GetNormalizedOCLCNumber {
+    my ($record,$marcflavour) = @_;
+    my (@fields,$oclc);
+
+    if ($marcflavour eq 'MARC21') {
+        @fields = $record->field('035');
+        foreach my $field (@fields) {
+            $oclc = $field->subfield('a');
+            if ($oclc =~ /OCoLC/) {
+                $oclc =~ s/\(OCoLC\)//;
+                return $oclc;
+            } else {
+                return undef;
+            }
+        }
+    }
+    else { # TODO: add UNIMARC fields
+    }
+}
+
+sub _normalize_match_point {
+    my $match_point = shift;
+    (my $normalized_match_point) = $match_point =~ /([\d-]*[X]*)/;
+    $normalized_match_point =~ s/-//g;
+
+    return $normalized_match_point;
+}
+
+sub _isbn_cleanup ($) {
+    my $normalized_isbn = shift;
+    $normalized_isbn =~ s/-//g;
+    $normalized_isbn =~/([0-9]{1,})/;
+    $normalized_isbn = $1;
+    if (
+        $normalized_isbn =~ /\b(\d{13})\b/ or
+        $normalized_isbn =~ /\b(\d{10})\b/ or
+        $normalized_isbn =~ /\b(\d{9}X)\b/i
+    ) { 
+        return $1;
+    }
+    return undef;
+}
+
 1;
 
 __END__
-- 
2.20.1