convert Aleph mab *.m21 format to ISO marc

diff --git a/scripts/mab2marc.pl b/scripts/mab2marc.pl
new file mode 100755 (executable)
index 0000000..cf94618
--- /dev/null
+++ b/scripts/mab2marc.pl
@@ -0,0 +1,67 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use autodie;
+use MARC::Record;
+use Encode;
+use Data::Dump qw(dump);
+
+open(my $m21, '<', 'agram-3.m21');
+open(my $out, '>:encoding(utf-8)', 'agram-3.marc');
+
+my $last_id;
+my @fields;
+my $marc;
+
+sub new_marc {
+       $marc = new MARC::Record;
+       $marc->encoding('utf-8');
+       return $marc;
+}
+
+$marc = new_marc();
+
+while (<$m21>) {
+       chomp;
+       my ( $id, $rest ) = split(/\s/, $_, 2);
+       my ( $fffii, $sf ) = split(/\s+L\s+/,$rest,2);
+
+       warn "## ",dump( $id, $fffii, $sf );
+
+       $last_id = $id if ! defined $last_id;
+       if ( $id != $last_id ) {
+               print $out $marc->as_usmarc;
+               print "XXX $id\n";
+               print $marc->as_formatted();
+               print "\n";
+               $marc = new_marc();
+               $last_id = $id;
+       }
+
+       if ( $fffii eq 'LDR' ) {
+               $sf =~ s/\^/ /g;
+               $marc->leader( $sf );
+       } elsif ( $fffii =~ m/^00/ ) {
+               my $field = MARC::Field->new( $fffii, $sf );
+               $marc->append_fields( $field );
+       } else {
+               my $f = $1 if $fffii =~ s/^(...)//;
+               my $i1 = $1 if $fffii =~ s/^(.)//;
+               my $i2 = $1 if $fffii =~ s/^(.)//;
+               $i1 ||= ' ';
+               $i2 ||= ' ';
+
+               warn "# $id $fffii -> ", dump($f,$i1,$i2), " [$sf]\n";
+
+               my @f = ( $f, $i1, $i2 );
+
+               while ( $sf =~ s/^\$\$(\w)([^\$]+)// ) {
+                       push @f, $1, decode('iso-8859-1', $2);
+               }
+               warn "### ",dump( @f );
+               my $field = MARC::Field->new( @f );
+               $marc->append_fields( $field );
+       }
+}
+       
+