--- trunk/lib/WebPAC/Normalize.pm	2007/11/07 09:19:29	1012
+++ trunk/lib/WebPAC/Normalize.pm	2007/11/07 11:54:34	1013
@@ -13,6 +13,7 @@
 	marc_compose marc_leader marc_fixed
 	marc_duplicate marc_remove marc_count
 	marc_original_order
+	marc_template
 
 	rec1 rec2 rec
 	frec
@@ -47,7 +48,7 @@
 
 =cut
 
-our $VERSION = '0.32';
+our $VERSION = '0.33';
 
 =head1 SYNOPSIS
 
@@ -859,6 +860,142 @@
 	warn "## marc_record = ", dump( $marc_record ),$/ if ($debug > 1);
 }
 
+=head2 marc_template
+
+=cut
+
+sub marc_template {
+	my $args = {@_};
+	warn "## marc_template(",dump($args),")";
+
+	foreach ( qw/subfields_rename marc_template/ ) {
+#		warn "ref($_) = ",ref($args->{$_});
+		die "$_ not ARRAY" if ref($args->{$_}) ne 'ARRAY';
+	}
+
+	my $r = $rec->{ $args->{from} }; # || return;
+	die "record field ", $args->{from}, " isn't array\n" unless (ref($r) eq 'ARRAY');
+
+	my @subfields_rename = @{ $args->{subfields_rename} };
+#	warn "### subfields_rename [$#subfields_rename] = ",dump( @subfields_rename );
+
+	confess "need mapping in pairs for subfields_rename"
+		if $#subfields_rename % 2 != 1;
+	
+	my ( $subfields_rename, $from_subfields, $to_subfields );
+	while ( my ( $from, $to ) = splice(@subfields_rename, 0, 2) ) {
+		my ( $f, $t ) = (
+			$from_subfields->{ $from }++,
+			$to_subfields->{ $to }++
+		);
+		$subfields_rename->{ $from }->[ $f ] = [ $to => $t ];
+	}
+	warn "### subfields_rename = ",dump( $subfields_rename ),$/;
+	warn "### from_subfields = ", dump( $from_subfields ),$/;
+	warn "### to_subfields = ", dump( $to_subfields ),$/;
+
+	my $fields_re = join('|', keys %$to_subfields );
+
+	my $pos_templates;
+	my $count;
+	my @marc_order;
+	my $marc_template_order;
+	my $fill_in;
+	my @marc_out;
+
+	foreach my $template ( @{ $args->{marc_template} } ) {
+		$count = {};
+		@marc_order = ();
+		sub my_count {
+			my $sf = shift;
+			my $nr = $count->{$sf}++;
+			push @marc_order, [ $sf, $nr ];
+			return $sf . $nr;
+		}
+		my $pos_template = $template;
+		$pos_template =~ s/($fields_re)/my_count($1)/ge;
+		my $count_key = dump( $count );
+		warn "### template: |$template| -> |$pos_template| count = $count_key marc_order = ",dump( @marc_order ),$/;
+		$pos_templates->{ $count_key } = $pos_template;
+		$marc_template_order->{ $pos_template } = [ @marc_order ];
+	}
+	warn "### from ",dump( $args->{marc_template} ), " created ", dump( $pos_templates ), " and ", dump( $marc_template_order );
+
+	my $m;
+
+	foreach my $r ( @{ $rec->{ $args->{from} } } ) {
+
+		my $i1 = $r->{i1} || ' ';
+		my $i2 = $r->{i2} || ' ';
+		$m = [ $args->{to}, $i1, $i2 ];
+
+		warn "### r = ",dump( $r );
+
+		my ( $new_r, $from_count, $to_count );
+		foreach my $sf ( keys %{$r} ) {
+			my $nr = $from_count->{$sf}++;
+			my $rename_to = $subfields_rename->{ $sf };	# ||
+#				die "can't find subfield rename for $sf/$nr in ", dump( $subfields_rename );
+			warn "### rename $sf/$nr to ", dump( $rename_to->[$nr] ), $/;
+			my ( $to_sf, $to_nr ) = @{ $rename_to->[$nr] };
+			$new_r->{ $to_sf }->[ $to_nr ] = [ $sf => $nr ];
+
+			$to_count->{ $to_sf }++;
+		}
+
+		warn "### new_r = ",dump( $new_r );
+
+		my $from_count_key = dump( $to_count );
+
+		warn "### from_count = ",dump( $from_count ), $/;
+		warn "### to_count   = ",dump( $to_count ), $/;
+
+		my $template = $pos_templates->{ $from_count_key } ||
+			die "I don't have template for:\n$from_count_key\n## available templates\n", dump( $pos_templates );
+
+		warn "### selected template: |$template|\n";
+
+		$fill_in = {};
+
+		foreach my $sf ( split(/\|/, $template ) ) {
+			sub fill_in {
+				my ( $r, $sf, $nr ) = @_;
+				my ( $from_sf, $from_nr ) = @{ $new_r->{ $sf }->[ $nr ] };
+				my $v = $r->{ $from_sf }; # || die "no $from_sf/$from_nr";
+				warn "#### fill_in( $sf, $nr ) = $from_sf/$from_nr >>>> ",dump( $v ), $/;
+				if ( ref( $v ) eq 'ARRAY' ) {
+					$fill_in->{$sf}->[$nr] = $v->[$from_nr];
+					return $v->[$from_nr];
+				} elsif ( $from_nr == 0 ) {
+					$fill_in->{$sf}->[$nr] = $v;
+					return $v;
+				} else {
+					die "requested subfield $from_sf/$from_nr but it's ",dump( $v );
+				}
+			}
+			warn "#### $sf <<<< $fields_re\n";
+			$sf =~ s/($fields_re)(\d+)/fill_in($r,$1,$2)/ge;
+			warn "#### >>>> $sf with fill_in = ",dump( $fill_in ),$/;
+		}
+
+		warn "## template: |$template|\n## marc_template_order = ",dump( $marc_template_order );
+
+		foreach my $sf ( @{ $marc_template_order->{$template} } ) {
+			my ( $sf, $nr ) = @$sf;
+			my $v = $fill_in->{$sf}->[$nr] || die "can't find fill_in $sf/$nr";
+			warn "++ $sf/$nr |$v|\n";
+			push @$m, [ $sf, $v ];
+		}
+
+		warn "#### >>>> created marc: ", dump( $m );
+
+		push @marc_out, $m;
+	}
+
+	warn "### marc_template produced: ",dump( @marc_out );
+	return @marc_out;
+}
+
 =head2 marc_count
 
 Return number of MARC records created using L</marc_duplicate>.