add include localized file token

src/script/parser.cpp

@@ -181,7 +181,18 @@ void TokenIterator::readToken() {
     newline = true;
   } else if (isSpace(c)) {
     ++pos;
-    // ignore
+    // ignore
+  } else if (is_substr(pos, end, "include localized file:")) {
+    pos += 23; // "include localized file:"
+    const char* newlines = "\r\n";
+    auto eol = find_first_of(pos, end, newlines, newlines + 2);
+    String include_file = trim(StringView(pos, eol)) + _("_") + settings.locale;
+    // include_file("filename_en")
+    addToken(TOK_NAME, "include_file", pos - 23);
+    addToken(TOK_LPAREN, "(", pos);
+    addToken(TOK_STRING, include_file, pos);
+    addToken(TOK_RPAREN, ")", eol);
+    pos = eol;
   } else if (is_substr(pos, end, "include file:")) {
     pos += 13; // "include file:"
     const char* newlines = "\r\n";

src/util/io/reader.cpp

@@ -12,6 +12,7 @@
 #include <util/error.hpp>
 #include <util/io/package_manager.hpp>
 #include <boost/logic/tribool.hpp>
+#include <data/settings.hpp>
 #undef small
 using boost::tribool;
 
@@ -356,6 +357,10 @@ template <> void Reader::handle(Vector2D& vec) {
 template <> void Reader::handle(LocalFileName& f) {
   f = LocalFileName::fromReadString(this->getValue());
 }
+
+String Reader::addLocale(String filename) {
+  return filename + _("_") + settings.locale;
+}
 
 // ----------------------------------------------------------------------------- : EnumReader
 

src/util/io/reader.hpp

@@ -116,7 +116,9 @@ public:
   
   /// The package being read from
   inline Packaged* getPackage() const { return package; }
-  
+  
+  String addLocale(String);
+
 private:
   // --------------------------------------------------- : Data
   /// App version this file was made with
@@ -175,7 +177,8 @@ private:
   /** Maybe the key is "include file" */
   template <typename T>
   void unknownKey(T& v) {
-    if (key == _("include_file")) {
+    if (key == _("include_file") || key == _("include_localized_file")) {
+      value = key == _("include_localized_file") ? addLocale(value) : value;
       auto [stream, include_package] = openFileFromPackage(package, value);
       Reader sub_reader(*stream, include_package, value, ignore_invalid);
       if (sub_reader.file_app_version == 0) {