Use enums for command-line options

[tinc] / src / tincctl.c

diff --git a/src/tincctl.c b/src/tincctl.c
index a882a66..a18f6ce 100644 (file)
--- a/src/tincctl.c
+++ b/src/tincctl.c
@@ -80,15 +80,31 @@ char *device = NULL;
 char *iface = NULL;
 int debug_level = -1;
 
+typedef enum option_t {
+       OPT_BAD_OPTION  = '?',
+       OPT_LONG_OPTION =  0,
+
+       // Short options
+       OPT_BATCH       = 'b',
+       OPT_CONFIG_FILE = 'c',
+       OPT_NETNAME     = 'n',
+
+       // Long options
+       OPT_HELP        = 255,
+       OPT_VERSION,
+       OPT_PIDFILE,
+       OPT_FORCE,
+} option_t;
+
 static struct option const long_options[] = {
-       {"batch", no_argument, NULL, 'b'},
-       {"config", required_argument, NULL, 'c'},
-       {"net", required_argument, NULL, 'n'},
-       {"help", no_argument, NULL, 1},
-       {"version", no_argument, NULL, 2},
-       {"pidfile", required_argument, NULL, 3},
-       {"force", no_argument, NULL, 4},
-       {NULL, 0, NULL, 0}
+       {"batch",   no_argument,       NULL, OPT_BATCH},
+       {"config",  required_argument, NULL, OPT_CONFIG_FILE},
+       {"net",     required_argument, NULL, OPT_NETNAME},
+       {"help",    no_argument,       NULL, OPT_HELP},
+       {"version", no_argument,       NULL, OPT_VERSION},
+       {"pidfile", required_argument, NULL, OPT_PIDFILE},
+       {"force",   no_argument,       NULL, OPT_FORCE},
+       {NULL,      0,                 NULL, 0},
 };
 
 static void version(void) {
@@ -189,47 +205,47 @@ static bool parse_options(int argc, char **argv) {
        int option_index = 0;
 
        while((r = getopt_long(argc, argv, "+bc:n:", long_options, &option_index)) != EOF) {
-               switch(r) {
-               case 0:   /* long option */
+               switch((option_t) r) {
+               case OPT_LONG_OPTION:
                        break;
 
-               case 'b':
+               case OPT_BAD_OPTION:
+                       usage(true);
+                       free_names();
+                       return false;
+
+               case OPT_BATCH:
                        tty = false;
                        break;
 
-               case 'c': /* config file */
+               case OPT_CONFIG_FILE:
                        free(confbase);
                        confbase = xstrdup(optarg);
                        confbasegiven = true;
                        break;
 
-               case 'n': /* net name given */
+               case OPT_NETNAME:
                        free(netname);
                        netname = xstrdup(optarg);
                        break;
 
-               case 1:   /* show help */
+               case OPT_HELP:
                        show_help = true;
                        break;
 
-               case 2:   /* show version */
+               case OPT_VERSION:
                        show_version = true;
                        break;
 
-               case 3:   /* open control socket here */
+               case OPT_PIDFILE:
                        free(pidfilename);
                        pidfilename = xstrdup(optarg);
                        break;
 
-               case 4:   /* force */
+               case OPT_FORCE:
                        force = true;
                        break;
 
-               case '?': /* wrong options */
-                       usage(true);
-                       free_names();
-                       return false;
-
                default:
                        break;
                }