Added love.system.openURL (resolves issue #863)

src/common/utf8.cpp

@@ -45,6 +45,27 @@ std::string to_utf8(LPCWSTR wstr)
 	return ret;
 }
 
+std::wstring to_widestr(const std::string &str)
+{
+	if (str.empty())
+		return std::wstring();
+
+	int wide_size = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), (int) str.length(), nullptr, 0);
+
+	if (wide_size == 0)
+		return std::wstring();
+
+	std::wstring widestr;
+	widestr.resize(wide_size);
+
+	int ok = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), (int) str.length(), &widestr[0], widestr.length());
+
+	if (!ok)
+		return std::wstring();
+
+	return widestr;
+}
+
 void replace_char(std::string &str, char find, char replace)
 {
 	int length = str.length();

src/common/utf8.h

@@ -35,6 +35,13 @@ namespace love
  **/
 std::string to_utf8(LPCWSTR wstr);
 
+/**
+ * Convert a UTF-8 encoded string to a wide string.
+ * @param str The UTF-8 string.
+ * @return A wide string.
+**/
+std::wstring to_widestr(const std::string &str);
+
 /**
  * Replace all occurences of 'find' with 'replace' in a string.
  * @param str The string to modify.