Added long getopts and added help(), 'cuz I always forget how to use it

diff --git a/testing/main.c b/testing/main.c
index 1494acfcac63f2df056f50ffdc355d7b7c613cd2..ab22e5eeb7d1ea4e0fdf40fb65cb2cdb6a3cc30a 100644 (file)
--- a/testing/main.c
+++ b/testing/main.c
@@ -74,6 +74,37 @@ int realtime;
 static void get_capabilities(unsigned int subd);
 static void print_device_info(void);
 
+void help(int ret)
+{
+       int i;
+
+       fprintf(stderr,
+"comedi_test [options]\n"
+"  --device, -f <device_file>   Use device <device_file>\n"
+"  --realtime, -r               Use real-time interrupts, if available\n"
+"  --subdevice, -s <index>      Only test subdevice <index>\n"
+"  --test, -t <test>            Only run test <test>\n"
+"  --verbose, -v                Be verbose\n"
+"  --help, -h                   Print this message\n"
+"Available tests: ");
+       for(i=0;i<n_tests;i++){
+               fprintf(stderr,"%s ",tests[i].name);
+       }
+       fprintf(stderr,"\n");
+
+       exit(ret);
+}
+
+static struct option longopts[]={
+       { "device", 1, 0, 'f' },
+       { "realtime", 0, 0, 'r' },
+       { "subdevice", 1, 0, 's' },
+       { "test", 1, 0, 't' },
+       { "verbose", 0, 0, 'v' },
+       { "help", 0, 0, 'h' },
+       {0}
+};
+
 int main(int argc, char *argv[])
 {
        int c;
@@ -82,7 +113,7 @@ int main(int argc, char *argv[])
        setvbuf(stdout,NULL,_IONBF,0);
 
        while (1) {
-               c = getopt(argc, argv, "f:rs:t:v");
+               c = getopt_long(argc, argv, "f:rs:t:v", longopts, NULL);
                if (c == -1)
                        break;
                switch (c) {
@@ -99,12 +130,15 @@ int main(int argc, char *argv[])
                case 't':
                        only_test = optarg;
                        break;
+               case 'h':
+                       help(0);
+                       break;
                case 'v':
                        verbose = 1;
                        break;
                default:
-                       printf("bad option\n");
-                       exit(1);
+                       help(1);
+                       break;
                }
        }