convert file from command-line argument

diff --git a/scripts/mab2marc.pl b/scripts/mab2marc.pl
index cf94618..9dd4b68 100755 (executable)
--- a/scripts/mab2marc.pl
+++ b/scripts/mab2marc.pl
@@ -6,8 +6,14 @@ 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 $source = shift @ARGV || die "usage: $0 file.m21\n";
+my $dest = $source;
+$dest =~ s/\..+/.marc/;
+
+open(my $m21, '<', $source);
+open(my $out, '>:encoding(utf-8)', $dest);
+
+warn "# convert $source => $dest\n";
 
 my $last_id;
 my @fields;