add hostname command

main/cmd_hostname.c

@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <string.h>
+#include "esp_log.h"
+#include "esp_console.h"
+#include "argtable3/argtable3.h"
+
+#include "esp32-lora.h"
+#include "lorcomm.h"
+#include "main.h"
+
+static struct {
+    struct arg_str *hostname;
+    struct arg_end *end;
+    lora32_cfg_t  *lora;
+} hostname_args;
+
+int hostname(int argc, char **argv) {
+  int nerrors = arg_parse(argc, argv, (void **)&hostname_args);
+
+  if (nerrors != 0) {
+    arg_print_errors(stderr, hostname_args.end, argv[0]);
+
+    return 1;
+  }
+
+  if(argc == 1) {
+    printf("  > %s\n", lorcomm_cfg.hostname);
+  } else {
+    asprintf(&lorcomm_cfg.hostname, "%s", hostname_args.hostname->sval[0]);
+  }
+
+  return 0;
+}
+
+void cmd_hostname_register(lora32_cfg_t *lora) {
+  hostname_args.hostname = arg_strn(NULL, NULL, "\"hostname\"", 0, 1, "hostname");
+  hostname_args.end = arg_end(1);
+  hostname_args.lora = lora;
+
+  const esp_console_cmd_t hostname_cmd = {
+    .command = "hostname",
+    .help = "Set/Get Hostname",
+    .hint = NULL,
+    .func = &hostname,
+    .argtable = &hostname_args
+  };
+
+  ESP_ERROR_CHECK(esp_console_cmd_register(&hostname_cmd));
+}