[gpsd-dev] [PATCH 2/4] Enable options into test_gpsmm program

[Robert Norris]

First enabled option give the number of times the program
 iterates around the main loop.
Mainly this allows the test program to finish cleanly.
---
 test_gpsmm.cpp | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/test_gpsmm.cpp b/test_gpsmm.cpp
index c32f8fca..dab1bfc2 100644
--- a/test_gpsmm.cpp
+++ b/test_gpsmm.cpp
@@ -9,6 +9,8 @@
 /* This simple program shows the basic functionality of the C++ wrapper class 
*/
 #include <iostream>
 
+#include <getopt.h>
+
 #include "libgpsmm.h"
 
 using namespace std;
@@ -102,8 +104,29 @@ static void libgps_dump_state(struct gps_data_t *collect)
 }
 
 
-int main(void)
+int main(int argc, char *argv[])
 {
+    uint looper = 0;
+
+    // A typical C++ program may look to use a more native option parsing 
method
+    //  such as boost::program_options
+    // But for this test program we don't want extra dependencies
+    // Hence use C style getopt for (build) simplicity
+    int option;
+    while ((option = getopt(argc, argv, "l:h?")) != -1) {
+        switch (option) {
+        case 'l':
+            looper = atoi(optarg);
+            break;
+        case '?':
+        case 'h':
+        default:
+            cout << "usage: " << argv[0] << " [-l n]\n";
+            exit(EXIT_FAILURE);
+            break;
+        }
+    }
+
     gpsmm gps_rec("localhost", DEFAULT_GPSD_PORT);
 
     if (gps_rec.stream(WATCH_ENABLE|WATCH_JSON) == NULL) {
@@ -111,7 +134,11 @@ int main(void)
         return 1;
     }
 
-    for (;;) {
+    // Loop for the specified number of times
+    // If not specified then by default it loops until ll simply goes out of 
bounds
+    // So with the 5 second wait & a 4 byte uint - this equates to ~680 years
+    //  - long enough for a test program :)
+    for (uint ll = 0; ll < looper ; ll++) {
        struct gps_data_t* newdata;
 
        if (!gps_rec.waiting(5000000))
-- 
2.11.0