Add initial support for the XDG Base Directory spec

Spec version 0.7 from https://standards.freedesktop.org/basedir-spec/basedir-spec-0.7.html
(latest as of this commit).

Three virtual methods are added to OS for the various XDG paths we will use:
- OS::get_data_path gives XDG_DATA_HOME, or if missing:
  ~/.local/share on X11, ~/Library/Application Support/ on macOS and %APPDATA% on Windows
- OS::get_config_path gives XDG_CONFIG_HOME, or if missing:
  ~/.config on X11, ~/Library/Application Support/ on macOS and %APPDATA% on Windows
- OS::get_cache_path gives XDG_CACHE_HOME, or if missing:
  ~/.cache on X11, ~/Library/Caches on macOS and %APPDATA% on Windows

So for Windows there are no changes, for Linux we follow the full split spec
and for macOS stuff will move from ~/.godot to ~/Library/Application Support/Godot.

Support for system-wide installation of templates on Unix was removed for now,
as it's a bit hackish and I don't think anyone uses it.

user:// will still be OS::get_data_path() + "/godot/app_userdata/$name" by
default, but when using the application/config/use_shared_user_dir option
it will now use XDG_DATA_HOME/$name, e.g. ~/.local/share/MyGame.

For now everything still goes in EditorSettings::get_settings_dir(), but
this will be changed in a later commit to make use of the new splitting
where relevant.

Part of #3513.

1 files changed, 2 insertions, 8 deletions

diff --git a/modules/mono/godotsharp_dirs.cpp b/modules/mono/godotsharp_dirs.cpp
index 54596ba35a..a0c2508b0d 100644
--- a/modules/mono/godotsharp_dirs.cpp
+++ b/modules/mono/godotsharp_dirs.cpp
@@ -57,7 +57,7 @@ String _get_expected_build_config() {
 String _get_mono_user_dir() {
 #ifdef TOOLS_ENABLED
 	if (EditorSettings::get_singleton()) {
-		return EditorSettings::get_singleton()->get_settings_dir().plus_file("mono");
+		return EditorSettings::get_singleton()->get_data_dir().plus_file("mono");
 	} else {
 		String settings_path;
 
@@ -68,13 +68,7 @@ String _get_mono_user_dir() {
 			// contain yourself
 			settings_path = exe_dir.plus_file("editor_data");
 		} else {
-			if (OS::get_singleton()->has_environment("APPDATA")) {
-				String app_data = OS::get_singleton()->get_environment("APPDATA").replace("\\", "/");
-				settings_path = app_data.plus_file(String(_MKSTR(VERSION_SHORT_NAME)).capitalize());
-			} else if (OS::get_singleton()->has_environment("HOME")) {
-				String home = OS::get_singleton()->get_environment("HOME");
-				settings_path = home.plus_file("." + String(_MKSTR(VERSION_SHORT_NAME)).to_lower());
-			}
+			settings_path = OS::get_singleton()->get_data_path().plus_file(OS::get_singleton()->get_godot_dir_name());
 		}
 
 		return settings_path.plus_file("mono");