From f0624ccf890d769c658c846dac1174ccb7eced22 Mon Sep 17 00:00:00 2001
From: Quantum <quantum2048@gmail.com>
Date: Fri, 27 Aug 2021 02:30:17 -0400
Subject: [PATCH] [common] option: implement ability to dump config into ini

This is intended to be used for saving filter options into an ini file.
---
 common/include/common/option.h |  4 ++++
 common/src/option.c            | 19 +++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/common/include/common/option.h b/common/include/common/option.h
index 8f3dcdf9..324f72de 100644
--- a/common/include/common/option.h
+++ b/common/include/common/option.h
@@ -22,6 +22,7 @@
 #define _H_COMMON_OPTION_
 
 #include <stdbool.h>
+#include <stdio.h>
 #include "common/stringlist.h"
 
 enum OptionType
@@ -94,6 +95,9 @@ bool option_validate(void);
 // print out the options, help, and their current values
 void option_print(void);
 
+// dump the options in ini format into the file
+bool option_dump(FILE * file, const char * module);
+
 // final cleanup
 void option_free(void);
 
diff --git a/common/src/option.c b/common/src/option.c
index 8cd9065a..8c0ec93e 100644
--- a/common/src/option.c
+++ b/common/src/option.c
@@ -747,6 +747,25 @@ void option_print(void)
   }
 }
 
+// dump the options in ini format into the file
+bool option_dump(FILE * file, const char * module)
+{
+  fprintf(file, "[%s]\n", module);
+
+  for (int i = 0; i < state.oCount; ++i)
+  {
+    struct Option * o = state.options[i];
+    if (strcasecmp(o->module, module) != 0)
+      continue;
+    char * value = o->toString(o);
+    fprintf(file, "%s=%s\n", o->name, value);
+    free(value);
+  }
+
+  fputc('\n', file);
+  return true;
+}
+
 struct Option * option_get(const char * module, const char * name)
 {
   for(int i = 0; i < state.oCount; ++i)