Rename functions and cmdline to cli for organization.

src/rule_del/utils/cli.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+struct cli
+{
+    const char* cfg_file;
+
+    int help;
+
+    int save;
+
+    int mode;
+
+    int idx;
+
+    const char* ip;
+    int v6;
+} typedef cli_t;
+
+void parse_cli(cli_t* cli, int argc, char* argv[]);