--- trunk/IsisDB.pm	2004/12/28 00:43:04	1
+++ trunk/IsisDB.pm	2004/12/28 01:41:45	2
@@ -68,6 +68,10 @@
 	debug => 1,
  );
 
+Options are described below:
+
+=over 5
+
 =item isisdb
 
 Prefix path to CDS/ISIS. It should contain full or relative path to database
@@ -82,6 +86,10 @@
 
 Dump a C<lot> of debugging output.
 
+=back
+
+It will also set C<$isis-E<gt>{'maxmfn'}> which is maximum MFN stored in database.
+
 =cut
 
 sub new {
@@ -91,7 +99,7 @@
 
 	$self->{isisdb} = {@_}->{isisdb} || croak "new needs database name as argument!";
 
-	$self->{debug} = {@_}->{debug} || 1;	# XXX remove debug always!
+	$self->{debug} = {@_}->{debug};
 
 	# if you want to read .FDT file use read_fdt argument when creating class!
 	if ({@_}->{read_fdt} && -e $self->{isisdb}.".FDT") {
@@ -134,6 +142,9 @@
 	seek(fileMST,4,0);
 	$self->{'NXTMFN'}=$self->Read32(\*fileMST) || carp "NXTNFN is zero";
 
+	# save maximum MFN
+	$self->{'maxmfn'} = $self->{'NXTMFN'} - 1;
+
 	close(fileMST);
 
 	# Get the index information from $db.CNT
@@ -183,11 +194,16 @@
 	$self ? return $self : return undef;
 }
 
+=head2 GetMFN
+
+Read record with selected MFN
+
+  my $rec = $isis->GetMFN(55);
 
-# Get a record from the MFN
-# Return the number of fields in the record.
-# Return -1 if the record is marked for deletion
-# The record is then extracted with call to GETs
+Returns hash with keys which are field names and values are unpacked values
+for that field.
+
+=cut
 
 sub GetMFN {
 	my $self = shift;
@@ -289,10 +305,12 @@
 
 	# Get Variable Fields
 
+	delete $self->{record};
+
 	for (my $i = 0 ; $i < $NVF ; $i++) {
 		my $rec;
 		read(fileMST,$rec,$FieldLEN[$i]);
-		$self->{record}->{$FieldTAG[$i]} = $rec;
+		push @{$self->{record}->{$FieldTAG[$i]}}, $rec;
 	}
 	close(fileMST);
 
@@ -303,9 +321,39 @@
 
 	print Dumper($self) if ($self->{debug});
 
-	return $NVF;
+	return $self->{'record'};
 }
 
+=head2 to_ascii
+
+Dump ascii output of selected MFN
+
+  print $isis->to_ascii(55);
+
+=cut
+
+sub to_ascii {
+	my $self = shift;
+
+	my $mfn = shift || croak "need MFN";
+
+	my $rec = $self->GetMFN($mfn);
+
+print STDERR Dumper($rec);
+
+	my $out = "0\t$mfn";
+
+	foreach my $f (sort keys %{$rec}) {
+		$out .= "\n$f\t".join("\n$f\t",@{$self->{record}->{$f}});
+	}
+
+	$out .= "\n";
+
+	return $out;
+}
+
+################# old cruft which is not ported from php to perl
+
 =begin php
 
   # Load the dictionary from the $db.L0x files.