logswan

commit e8c3e8ba00643f6e2b4b7d8d5844d8ea844f9015
parent 365882160b2e66778cef21fa350d7983eaeb50b7
Author: Frederic Cambus <fcambus@users.sourceforge.net>
Date:   Sun, 27 Sep 2015 23:34:10 +0200

Check if an input file is specified and display usage otherwise

Diffstat:
M
src/logswan.c
 | 
11
++++++++---

1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/src/logswan.c b/src/logswan.c
@@ -91,10 +91,15 @@ int main (int argc, char *argv[]) {
 			return EXIT_SUCCESS;
 		}
 	}
-    
-	intputFile = argv[optind];
 
-	argc -= optind; 
+	if (optind < argc) {
+		intputFile = argv[optind];
+	} else {
+		displayUsage();
+		return EXIT_SUCCESS;
+	}
+
+	argc -= optind;
 	argv += optind;
 
 	/* Starting timer */