diff options
Diffstat (limited to 'pseudo.c')
| -rw-r--r-- | pseudo.c | 21 |
1 files changed, 13 insertions, 8 deletions
@@ -47,11 +47,13 @@ int opt_S = 0; static int pseudo_op(pseudo_msg_t *msg, const char *tag); void -usage(void) { - pseudo_diag("Usage: pseudo [-dflv] [-P prefix] [-t timeout] [command]\n"); - pseudo_diag(" pseudo [-dflv] [-P prefix] -S\n"); - pseudo_diag(" pseudo [-dflv] [-P prefix] -V\n"); - exit(1); +usage(int status) { + FILE *f = status ? stderr : stdout; + fputs("Usage: pseudo [-dflv] [-P prefix] [-t timeout] [command]\n", f); + fputs(" pseudo -h\n", f); + fputs(" pseudo [-dflv] [-P prefix] -S\n", f); + fputs(" pseudo [-dflv] [-P prefix] -V\n", f); + exit(status); } /* main server process */ @@ -92,7 +94,7 @@ main(int argc, char *argv[]) { * wrong. The + suppresses this annoying behavior, but may not * be compatible with sane option libraries. */ - while ((o = getopt(argc, argv, "+dflP:St:vV")) != -1) { + while ((o = getopt(argc, argv, "+dfhlP:St:vV")) != -1) { switch (o) { case 'd': /* run as daemon */ @@ -102,6 +104,9 @@ main(int argc, char *argv[]) { /* run foregrounded */ opt_f = 1; break; + case 'h': + usage(0); + break; case 'l': optptr += snprintf(optptr, PATH_MAX - (optptr - opts), "%s-l", optptr > opts ? " " : ""); @@ -117,7 +122,7 @@ main(int argc, char *argv[]) { pseudo_server_timeout = strtol(optarg, &s, 10); if (*s && !isspace(*s)) { pseudo_diag("Timeout must be an integer value.\n"); - usage(); + usage(EXIT_FAILURE); } optptr += snprintf(optptr, PATH_MAX - (optptr - opts), "%s-t %d", optptr > opts ? " " : "", @@ -136,7 +141,7 @@ main(int argc, char *argv[]) { break; case '?': pseudo_diag("unknown/invalid argument (option '%c').\n", optopt); - usage(); + usage(EXIT_FAILURE); break; } } |