Only warn if input and output files are equal.

[ssic.git] / src / ssic.pl

diff --git a/src/ssic.pl b/src/ssic.pl
index 5cc04efe502647737ace0cb520e4a5f0af852739..750c77be6b9021a72284ed8cec2d844390c52c5d 100644 (file)
--- a/src/ssic.pl
+++ b/src/ssic.pl
@@ -112,7 +112,7 @@ sub compile
        my $var_value;
 
        if ($input eq $output and $input ne "-") {
-               error(4, "Input and output files are equal\n");
+               warning("Input and output files are equal\n");
        }
 
        if ($input eq "-") {
@@ -127,8 +127,8 @@ sub compile
        if ($output eq "-") {
                $output_fh = *STDOUT;
        } else {
-               if (not open($output_fh, ">", $output)) {
-                       error(4, "%s: %s\n", $output, $!);
+               if (not open($output_fh, ">", $output . "~")) {
+                       error(4, "%s: %s\n", $output . "~", $!);
                }
        }
 
@@ -159,6 +159,10 @@ sub compile
        if ($output ne "-") {
                close($output_fh);
        }
+
+       if (not rename($output . "~", $output)) {
+               error(4, "%s: %s\n", $output, $!);
+       }
 }
 
 main();