udevsettle: use long options

diff --git a/udevsettle.c b/udevsettle.c
index f76ad7160d6c9c3f1c8c055856cd3010aaaa5b65..42a03bafe38cd15452b0a63061eead1b44319e6d 100644 (file)
--- a/udevsettle.c
+++ b/udevsettle.c
@@ -25,6 +25,7 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <syslog.h>
+#include <getopt.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
@@ -60,33 +61,37 @@ int main(int argc, char *argv[], char *envp[])
        ssize_t len;
        int timeout = DEFAULT_TIMEOUT;
        int loop;
-       int i;
+       static const struct option options[] = {
+               { "timeout", 1, NULL, 't' },
+               { "help", 0, NULL, 'h' },
+               {}
+       };
+       int option;
        int rc = 1;
+       int seconds;
 
        logging_init("udevsettle");
        udev_config_init();
        dbg("version %s", UDEV_VERSION);
        sysfs_init();
 
-       for (i = 1 ; i < argc; i++) {
-               char *arg = argv[i];
+       while (1) {
+               option = getopt_long(argc, argv, "t:h", options, NULL);
+               if (option == -1)
+                       break;
 
-               if (strncmp(arg, "--timeout=", 10) == 0) {
-                       char *str = &arg[10];
-                       int seconds;
-
-                       seconds = atoi(str);
+               switch (option) {
+               case 't':
+                       seconds = atoi(optarg);
                        if (seconds > 0)
                                timeout = seconds;
                        else
                                fprintf(stderr, "invalid timeout value\n");
                        dbg("timeout=%i", timeout);
-               } else if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
-                       printf("Usage: udevsettle [--help] [--timeout=<seconds>]\n");
+                       break;
+               case 'h':
+                       printf("Usage: udevsettle [--help] [--timeout=<seconds>]\n\n");
                        goto exit;
-               } else {
-                       fprintf(stderr, "unrecognized option '%s'\n", arg);
-                       err("unrecognized option '%s'\n", arg);
                }
        }