strict_add_sf9

[migration-tools.git] / sql / base / base.sql

diff --git a/sql/base/base.sql b/sql/base/base.sql
index 379875b..4e8d5bd 100644 (file)
--- a/sql/base/base.sql
+++ b/sql/base/base.sql
@@ -1098,6 +1098,47 @@ CREATE OR REPLACE FUNCTION migration_tools.add_code39mod43_checkdigit (TEXT) RET
     return $barcode . $checkdigit;
 $$ LANGUAGE PLPERLU STRICT STABLE;
 
+-- add_mod16_checkdigit
+--   $barcode      source barcode
+--
+-- https://www.activebarcode.com/codes/checkdigit/modulo16.html
+
+CREATE OR REPLACE FUNCTION migration_tools.add_mod16_checkdigit (TEXT) RETURNS TEXT AS $$
+    my $barcode = shift;
+
+    my @digits = split //, $barcode;
+    my $total = 0;
+    foreach $digit (@digits) {
+        if ($digit =~ /[0-9]/) { $total += $digit;
+        } elsif ($digit eq '-') { $total += 10;
+        } elsif ($digit eq '$') { $total += 11;
+        } elsif ($digit eq ':') { $total += 12;
+        } elsif ($digit eq '/') { $total += 13;
+        } elsif ($digit eq '.') { $total += 14;
+        } elsif ($digit eq '+') { $total += 15;
+        } elsif ($digit eq 'A') { $total += 16;
+        } elsif ($digit eq 'B') { $total += 17;
+        } elsif ($digit eq 'C') { $total += 18;
+        } elsif ($digit eq 'D') { $total += 19;
+        } else { die "invalid digit <$digit>";
+        }
+    }
+    my $remainder = $total % 16;
+    my $difference = 16 - $remainder;
+    my $checkdigit;
+    if ($difference < 10) { $checkdigit = $difference;
+    } elsif ($difference == 10) { $checkdigit = '-';
+    } elsif ($difference == 11) { $checkdigit = '$';
+    } elsif ($difference == 12) { $checkdigit = ':';
+    } elsif ($difference == 13) { $checkdigit = '/';
+    } elsif ($difference == 14) { $checkdigit = '.';
+    } elsif ($difference == 15) { $checkdigit = '+';
+    } else { die "error calculating checkdigit";
+    }
+
+    return $barcode . $checkdigit;
+$$ LANGUAGE PLPERLU STRICT STABLE;
+
 CREATE OR REPLACE FUNCTION migration_tools.attempt_phone (TEXT,TEXT) RETURNS TEXT AS $$
   DECLARE
     phone TEXT := $1;
@@ -3256,6 +3297,53 @@ BEGIN
 END
 $$ LANGUAGE plpgsql;
 
+-- yet another subfield 9 function, this one only adds the $9 if the ind1 = 1 or 4 and ind2 = 0 or 1
+DROP FUNCTION IF EXISTS migration_tools.strict_add_sf9(TEXT,TEXT);
+CREATE OR REPLACE FUNCTION migration_tools.strict_add_sf9(marc TEXT, new_9 TEXT)
+ RETURNS TEXT
+ LANGUAGE plperlu
+AS $function$
+use strict;
+use warnings;
+
+use MARC::Record;
+use MARC::File::XML (BinaryEncoding => 'utf8');
+
+binmode(STDERR, ':bytes');
+binmode(STDOUT, ':utf8');
+binmode(STDERR, ':utf8');
+
+my $marc_xml = shift;
+my $new_9_to_set = shift;
+
+$marc_xml =~ s/(<leader>.........)./${1}a/;
+
+eval {
+    $marc_xml = MARC::Record->new_from_xml($marc_xml);
+};
+if ($@) {
+    #elog("could not parse $bibid: $@\n");
+    import MARC::File::XML (BinaryEncoding => 'utf8');
+    return $marc_xml;
+}
+
+my @uris = $marc_xml->field('856');
+return $marc_xml->as_xml_record() unless @uris;
+
+foreach my $field (@uris) {
+    my $ind1 = $field->indicator('1');
+    if (!defined $ind1) { next; }
+    if ($ind1 ne '1' && $ind1 ne '4') { next; }
+    my $ind2 = $field->indicator('2');
+    if (!defined $ind2) { next; }
+    if ($ind2 ne '0' && $ind2 ne '1') { next; }
+    $field->add_subfields( '9' => $new_9_to_set );
+}
+
+return $marc_xml->as_xml_record();
+
+$function$;
+
 -- alternate adding subfield 9 function in that it adds them to existing tags where the 856$u matches a correct value only
 DROP FUNCTION IF EXISTS migration_tools.add_sf9(TEXT,TEXT,TEXT);
 CREATE OR REPLACE FUNCTION migration_tools.add_sf9(marc TEXT, partial_u TEXT, new_9 TEXT)