Allow optionally overwriting to an ini file (#24)

* Allow optionally overwriting to an ini file

Author: NotAFreak

ini/ini.h

@@ -200,7 +200,7 @@ inline int ini_parse(const char* filename, ini_handler handler, void* user) {
 class INIReader {
    public:
     // Empty Constructor
-    INIReader(){};
+    INIReader() {};
 
     // Construct INIReader and parse given filename. See ini.h for more info
     // about the parsing.
@@ -593,18 +593,25 @@ inline int INIReader::ValueHandler(void* user, const char* section,
 
 class INIWriter {
    public:
-    INIWriter(){};
+    INIWriter() {};
     /**
      * @brief Write the contents of an INI file to a new file
      * @param filepath The path of the output file
      * @param reader The INIReader object to write to the file
+     * @param overwrite Whether to just overwrite an existing file
      * @throws std::runtime_error if the output file already exists or cannot be
      * opened
      */
     inline static void write(const std::string& filepath,
-                             const INIReader& reader) {
-        if (struct stat buf; stat(filepath.c_str(), &buf) == 0) {
-            throw std::runtime_error("file: " + filepath + " already exist.");
+                             const INIReader& reader,
+                             const bool& overwrite = false) {
+        if (overwrite) {
+            std::remove(filepath.c_str());
+        } else {
+            if (struct stat buf; stat(filepath.c_str(), &buf) == 0) {
+                throw std::runtime_error("file: " + filepath +
+                                         " already exists.");
+            }
         }
         std::ofstream out;
         out.open(filepath);