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Added --help as optional command line argument.

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This commit is contained in:
skarg
2012-08-22 19:48:58 +00:00
parent f93b08e1bb
commit 690f82cbc8
1 changed files with 15 additions and 4 deletions
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bacnet-stack/demo/whohas/main.c
+15 -4
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@@ -107,6 +107,13 @@ static void Init_Service_Handlers(
apdu_set_reject_handler(MyRejectHandler); apdu_set_reject_handler(MyRejectHandler);
} }
static print_usage(
char *file_and_path)
{
printf("Usage: %s <object-type object-instance | object-name>\r\n",
filename_remove_path(file_and_path));
}
int main( int main(
int argc, int argc,
char *argv[]) char *argv[])
@@ -122,13 +129,17 @@ int main(
time_t timeout_seconds = 0; time_t timeout_seconds = 0;
if (argc < 2) { if (argc < 2) {
/* note: priority 16 and 0 should produce the same end results... */ print_usage(argv[0]);
printf("Usage: %s <object-type object-instance | object-name>\r\n" return 0;
"Send BACnet WhoHas request to devices, and wait for responses.\r\n" }
if ((argc > 1) && (strcmp(argv[1], "--help") == 0)) {
print_usage(argv[0]);
printf("Send BACnet WhoHas request to devices, \r\n"
"and wait %u milliseconds (BACNET_APDU_TIMEOUT) for responses.\r\n"
"\r\n" "Use either:\r\n" "The object-type can be 0 to %d.\r\n" "\r\n" "Use either:\r\n" "The object-type can be 0 to %d.\r\n"
"The object-instance can be 0 to %d.\r\n" "or:\r\n" "The object-instance can be 0 to %d.\r\n" "or:\r\n"
"The object-name can be any string of characters.\r\n", "The object-name can be any string of characters.\r\n",
filename_remove_path(argv[0]), MAX_BACNET_OBJECT_TYPE - 1, (unsigned)apdu_timeout(), MAX_BACNET_OBJECT_TYPE - 1,
BACNET_MAX_INSTANCE); BACNET_MAX_INSTANCE);
return 0; return 0;
} }