--- /home/brouard/bin/cppbeautifier	2016-03-05 17:58:37.409403832 +0100
+++ /home/brouard/bin/cppbeauty	2016-03-05 17:49:55.876384290 +0100
@@ -6,7 +6,7 @@
 my (%FILE_CACHE,@FILES_USED,$FILE_CACHE_LIMIT);
 my ($cur_src_file, $cur_src_line, $cur_file);
 
-$FILE_CACHE_LIMIT = 100;
+$FILE_CACHE_LIMIT = 1000;
 
 my %options;
 
@@ -17,11 +17,18 @@
 }
 
 
-print_help( "Missing -i option") if (! defined $options{'i'} );
-print_help( "Missing -o option") if (! defined $options{'o'} );
-
-$in_file = $options{'i'};
-$out_file = $options{'o'};
+# print_help( "Missing -i option") if (! defined $options{'i'} );
+# print_help( "Missing -o option") if (! defined $options{'o'} );
+if (! defined $options{'i'} ){
+		$in_file = </dev/stdin>;
+}else{
+		$in_file = $options{'i'};
+}
+if (! defined $options{'o'} ){
+		$out_file = </dev/stdout>;
+} else {
+		$out_file = $options{'o'};
+}
 $dir_name = $options{'d'};
 
 process_cpp_file($in_file,$out_file,$dir_name);