Changed getopt path option to conform with other utilities

1 files changed, 29 insertions, 17 deletions

diff --git a/util_lbt_test/src/util_lbt_test.c b/util_lbt_test/src/util_lbt_test.c
index 16af7ac..f143a92 100644
--- a/util_lbt_test/src/util_lbt_test.c
+++ b/util_lbt_test/src/util_lbt_test.c
@@ -32,6 +32,7 @@ Maintainer: Michael Coracin
 #include <unistd.h>     /* getopt access */
 #include <stdlib.h>     /* rand */
 #include <string.h>     /* strncmp */
+#include <getopt.h>     /* getopt_long */
 
 #include "loragw_aux.h"
 #include "loragw_reg.h"
@@ -77,12 +78,12 @@ static void sig_handler(int sigio) {
 /* describe command line options */
 void usage(void) {
     printf("Available options:\n");
-    printf(" -h print this help\n");
-    printf(" -f <float>  frequency in MHz of the first LBT channel\n");
-    printf(" -o <int>    offset in dB to be applied to the SX127x RSSI [-128..127]\n");
-    printf(" -r <int>    target RSSI: signal strength target used to detect if the channel is clear or not [-128..0]\n");
-    printf(" -s <uint>   scan time in µs for all 8 LBT channels [128,5000]\n");
-    printf(" -p <string> path of SPIDEV e.g. /dev/spidev0.0\n");
+    printf(" -h              print this help\n");
+    printf(" -f     <float>  frequency in MHz of the first LBT channel\n");
+    printf(" -o     <int>    offset in dB to be applied to the SX127x RSSI [-128..127]\n");
+    printf(" -r     <int>    target RSSI: signal strength target used to detect if the channel is clear or not [-128..0]\n");
+    printf(" -s     <uint>   scan time in µs for all 8 LBT channels [128,5000]\n");
+    printf(" --path <string> path of SPIDEV e.g. /dev/spidev0.0\n");
 }
 
 /* -------------------------------------------------------------------------- */
@@ -92,6 +93,11 @@ int main(int argc, char **argv)
 {
     int i;
     int xi = 0;
+    int option_index = 0;
+    static struct option long_options[] = {
+        {"path", 1, 0, 0},
+        {0, 0, 0, 0}
+    };
     char arg_s[64];
     /* in/out variables */
     double f1 = 0.0;
@@ -108,7 +114,7 @@ int main(int argc, char **argv)
     uint32_t freq_offset;
 
     /* parse command line options */
-    while ((i = getopt (argc, argv, "h:f:s:r:o:p:")) != -1) {
+    while ((i = getopt_long (argc, argv, "h:f:s:r:o:", long_options, &option_index)) != -1) {
         switch (i) {
             case 'h':
                 usage();
@@ -145,16 +151,6 @@ int main(int argc, char **argv)
                     rssi_target_dBm = xi;
                 }
                 break;
-            case 'p':
-                i = sscanf(optarg, "%s", arg_s);
-                if ((i != 1) || (strncmp(arg_s, "/dev/", 5 ) != 0)) {
-                    printf("ERROR: argument parsing of --path argument. Use -h to print help\n");
-                    return EXIT_FAILURE;
-                }
-                else {
-                    lgw_spi_set_path(arg_s);
-                }
-                break;
             case 'o': /* -o <int>  SX127x RSSI offset [-128..127] */
                 i = sscanf(optarg, "%i", &xi);
                 if((i != 1) || (xi < -128) || (xi > 127)) {
@@ -165,6 +161,22 @@ int main(int argc, char **argv)
                     rssi_offset = (int8_t)xi;
                 }
                 break;
+
+            case 0:
+                if (strcmp(long_options[option_index].name,"path") == 0) {
+                    i = sscanf(optarg, "%s", arg_s);
+                    if ((i != 1) || (strncmp(arg_s, "/dev/", 5 ) != 0)) {
+                        printf("ERROR: argument parsing of --path argument. Use -h to print help\n");
+                        return EXIT_FAILURE;
+                    }
+                    else {
+                        lgw_spi_set_path(arg_s);
+                    }
+                } else {
+                    printf("ERROR: argument parsing options. Use -h to print help\n");
+                    return EXIT_FAILURE;
+                }
+                break;
             default:
                 MSG("ERROR: argument parsing use -h option for help\n");
                 usage();