Suggest to keep the compression algorithm.

1 files changed, 5 insertions, 2 deletions

diff --git a/mkindex.pl b/mkindex.pl
index 50212bc..4d3afa7 100755
--- a/mkindex.pl
+++ b/mkindex.pl
@@ -15,7 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-our $VERSION = "0.2, August 12, 2013";
+our $VERSION = "0.3, August 13, 2013";
 
 use 5.010_000;
 use warnings;
@@ -283,6 +283,9 @@ foreach my $map (@mapset) {
         my ($new,$path,$suffix) = fileparse ($name, qr/\.[^.]*$/);
         $new = File::Spec->catfile($path,$new.'_new'.$suffix);
         my $driver = $ds->GetDriver()->{ShortName};
+        my %opts = %$gdal_opts;
+        my $compress = $ds->GetMetadata('IMAGE_STRUCTURE')->{COMPRESSION};
+        $opts{COMPRESS} = $compress if $compress;
         warn "WARN:     ".join (' ',
              map { my $x = $_;
                    $x =~ s/"/\\"/;
@@ -290,7 +293,7 @@ foreach my $map (@mapset) {
                    $x
                  }
                  ( 'gdal_translate', '-of', $driver
-                 , (map { ('-co', $_.'='.$gdal_opts->{$_}) } (keys %$gdal_opts))
+                 , (map { ('-co', $_.'='.$opts{$_}) } (keys %opts))
                  , $old, $new
                  )
              ). "\n";