sway: Print usage and exit on unknown options

1 files changed, 15 insertions, 0 deletions

diff --git a/sway/main.c b/sway/main.c
index 60a41923..7b24d405 100644
--- a/sway/main.c
+++ b/sway/main.c
@@ -65,6 +65,18 @@ int main(int argc, char **argv) {
         };
 
         char *config_path = NULL;
+
+        const char* usage =
+                "Usage: sway [options] [command]\n"
+                "\n"
+                "  -c, --config <config>  Specify a config file.\n"
+                "  -C, --validate         Check the validity of the config file, then exit.\n"
+                "  -d, --debug            Enables full logging, including debug information.\n"
+                "  -v, --version          Show the version number and quit.\n"
+                "  -V, --verbose          Enables more verbose logging.\n"
+                "      --get-socketpath   Gets the IPC socket path and prints it, then exits.\n"
+                "\n";
+
         int c;
         while (1) {
                 int option_index = 0;
@@ -104,6 +116,9 @@ int main(int argc, char **argv) {
                                 exit(EXIT_FAILURE);
                         }
                         break;
+                default:
+                        fprintf(stderr, "%s", usage);
+                        exit(EXIT_FAILURE);
                 }
         }