Revert "No need for usage()"

[slock.git] / slock.c

diff --git a/slock.c b/slock.c
index 2aa395e..c9cdee2 100644 (file)
--- a/slock.c
+++ b/slock.c
@@ -273,15 +273,28 @@ lockscreen(Display *dpy, int screen)
        return NULL;
 }
 
-int
-main(int argc, char **argv)
+static void
+usage(void)
 {
+       fprintf(stderr, "usage: slock [-v|POST_LOCK_CMD]\n");
+       exit(1);
+}
+
+int
+main(int argc, char **argv) {
 #ifndef HAVE_BSD_AUTH
        const char *pws;
 #endif
        Display *dpy;
        int screen;
 
+       if ((argc >= 2) && !strcmp("-v", argv[1]))
+               die("version %s, © 2006-2016 slock engineers\n", VERSION);
+
+       /* treat first argument starting with a '-' as option */
+       if ((argc >= 2) && argv[1][0] == '-')
+               usage();
+
 #ifdef __linux__
        dontkillme();
 #endif