1 files changed, 13 insertions, 3 deletions
diff --git a/renumfiles b/renumfiles
index 28ff2b9..1f57776 100755
--- a/renumfiles
+++ b/renumfiles
@@ -16,11 +16,21 @@ if($ARGV[0] =~ /^\d+$/) {
 }
 
 $pattern = $ARGV[0] || usage;
-$pattern =~ s/\%d/%02d/;
+usage if -f $pattern;
+
+shift;
+if(@ARGV >= 1000) {
+	$places = 4;
+} elsif (@ARGV >= 100) {
+	$places = 3;
+} else {
+	$places = 2;
+}
+
+$pattern =~ s/\%d/%0${places}d/;
 if($pattern !~ /\%\d+d/) {
-	$pattern = "${pattern}_\%02d.jpg";
+	$pattern = "${pattern}_\%0${places}d.jpg";
 }
-shift;
 
 @files = @ARGV;
 usage unless @files;