Uniformize path concatenation

scenes/config/settings/GeneralSettings.gd

@@ -47,7 +47,7 @@ func set_themes():
 				if RetroHubConfig._get_default_themes_dir() in RetroHubConfig.theme_path and \
 					theme_pck in RetroHubConfig.theme_path:
 					n_themes.selected = id
-				theme_id_map[id] = "res://default_themes/" + theme_pck
+				theme_id_map[id] = "res://default_themes".path_join(theme_pck)
 				id += 1
 	n_themes.add_separator()
 	id += 1

source/Config.gd

@@ -267,15 +267,15 @@ func _load_config_file():
 			# TODO: behavior for when file is corrupt
 
 func _get_credential(key: String) -> String:
-	var json : Dictionary = JSONUtils.load_json_file(_get_config_dir() + "/rh_credentials.json")
+	var json : Dictionary = JSONUtils.load_json_file(_get_config_dir().path_join("rh_credentials.json"))
 	if not json.is_empty() and json.has(key):
 		return json[key]
 	return ""
 
 func _set_credential(key: String, value: String):
-	var json : Dictionary = JSONUtils.load_json_file(_get_config_dir() + "/rh_credentials.json")
+	var json : Dictionary = JSONUtils.load_json_file(_get_config_dir().path_join("rh_credentials.json"))
 	json[key] = value
-	JSONUtils.save_json_file(json, _get_config_dir() + "/rh_credentials.json")
+	JSONUtils.save_json_file(json, _get_config_dir().path_join("rh_credentials.json"))
 
 func _on_config_updated(key, old_value, new_value):
 	match key:
@@ -552,7 +552,7 @@ func set_theme_config(key, value):
 func _load_theme_config():
 	_theme_config = {}
 	_theme_config_changed = false
-	var theme_config_path := _get_theme_config_dir() + "/config.json"
+	var theme_config_path := _get_theme_config_dir().path_join("config.json")
 	# If the config file doesn't exist, don't try reading it
 	if not FileAccess.file_exists(theme_config_path):
 		return
@@ -566,7 +566,7 @@ func _load_theme_config():
 
 func save_theme_config():
 	if _theme_config_changed:
-		var theme_config_path := _get_theme_config_dir() + "/config.json"
+		var theme_config_path := _get_theme_config_dir().path_join("config.json")
 		FileUtils.ensure_path(theme_config_path)
 		var file := FileAccess.open(theme_config_path, FileAccess.WRITE)
 		if not file:
@@ -597,12 +597,12 @@ func _bootstrap_config_dir():
 				push_error("Error when creating directory " + path)
 
 		# Bootstrap system specific configs
-		for filename in [
+		for filename: String in [
 			"rh_emulators.json",
 			"rh_systems.json",
 			"_emulator_paths.json"
 			]:
-			var filepath_out := _get_config_dir() + "/" + (filename as String)
+			var filepath_out := _get_config_dir().path_join(filename)
 			var file := FileAccess.open(filepath_out, FileAccess.WRITE)
 			if not file:
 				push_error("Error when opening file " + filepath_out + " for saving")
@@ -611,7 +611,7 @@ func _bootstrap_config_dir():
 			file.close()
 
 		# Bootstrap credentials file
-		JSONUtils.save_json_file({}, _get_config_dir() + "/rh_credentials.json")
+		JSONUtils.save_json_file({}, _get_config_dir().path_join("rh_credentials.json"))
 
 func _save_config():
 	if config.save_config_to_path(_get_config_file()):
@@ -734,7 +734,7 @@ func _determine_sc_mode():
 		if exe_path.ends_with("MacOS") and exe_path.path_join("..").simplify_path().ends_with("Contents"):
 			exe_path = exe_path.path_join("../../..").simplify_path()
 
-	if FileAccess.file_exists(exe_path + "/._sc_") or FileAccess.file_exists(exe_path + "/_sc_"):
+	if FileAccess.file_exists(exe_path.path_join("._sc_")) or FileAccess.file_exists(exe_path.path_join("_sc_")):
 		_is_sc = true
 
 func _get_emulator_path(emulator_name: String, key: String) -> String:
@@ -759,22 +759,22 @@ func _set_emulator_path(emulator_name: String, key: String, value: String) -> vo
 func _get_config_dir() -> String:
 	var path : String
 	if _is_sc:
-		return OS.get_executable_path().get_base_dir() + "/config"
+		return OS.get_executable_path().get_base_dir().path_join("config")
 
 	match FileUtils.get_os_id():
 		FileUtils.OS_ID.WINDOWS:
-			path = FileUtils.get_home_dir() + "/RetroHub"
+			path = FileUtils.get_home_dir().path_join("RetroHub")
 			if RetroHub._is_dev_env():
 				path += "-Dev"
 			return path
 		_:
-			path = FileUtils.get_home_dir() + "/.retrohub"
+			path = FileUtils.get_home_dir().path_join(".retrohub")
 			if RetroHub._is_dev_env():
 				path += "-dev"
 	return path
 
 func _get_config_file() -> String:
-	return _get_config_dir() + "/rh_config.json"
+	return _get_config_dir().path_join("rh_config.json")
 
 func _get_systems_file() -> String:
 	return "res://base_config/systems.json"
@@ -783,27 +783,27 @@ func _get_emulators_file() -> String:
 	return "res://base_config/emulators.json"
 
 func _get_emulator_paths_file() -> String:
-	return _get_config_dir() + "/_emulator_paths.json"
+	return _get_config_dir().path_join("_emulator_paths.json")
 
 func _get_custom_systems_file() -> String:
-	return _get_config_dir() + "/rh_systems.json"
+	return _get_config_dir().path_join("rh_systems.json")
 
 func _get_custom_emulators_file() -> String:
-	return _get_config_dir() + "/rh_emulators.json"
+	return _get_config_dir().path_join("rh_emulators.json")
 
 func _get_default_themes_dir() -> String:
 	return "res://default_themes"
 
 func _get_themes_dir() -> String:
-	return _get_config_dir() + "/themes"
+	return _get_config_dir().path_join("themes")
 
 func _get_theme_config_dir() -> String:
-	return _get_themes_dir() + "/config/" + theme_data.id if theme_data else ""
+	return _get_themes_dir().path_join("config").path_join(theme_data.id if theme_data else "")
 
 func _get_gamelists_dir() -> String:
-	return _get_config_dir() + "/gamelists"
+	return _get_config_dir().path_join("gamelists")
 
 func _get_gamemedia_dir() -> String:
 	if not config.custom_gamemedia_dir.is_empty():
 		return config.custom_gamemedia_dir
-	return _get_config_dir() + "/gamemedia"
+	return _get_config_dir().path_join("gamemedia")

source/data/ConfigData.gd

@@ -9,7 +9,7 @@ var _old_config : Dictionary
 # Games directory
 var config_version : int = 2
 var is_first_time : bool = true: set = _set_is_first_time
-var games_dir : String = FileUtils.get_home_dir() + "/ROMS": set = _set_games_dir
+var games_dir : String = FileUtils.get_home_dir().path_join("ROMS"): set = _set_games_dir
 var current_theme : String = "default": set = _set_current_theme
 var lang : String = "en": set = _set_lang
 var fullscreen : bool = true: set = _set_fullscreen

source/emulators/RetroarchEmulator.gd

@@ -8,7 +8,7 @@ static func get_custom_core_path() -> String:
 
 	var config_file := get_config_path()
 	if config_file:
-		var file := FileAccess.open(config_file + "/retroarch.cfg", FileAccess.READ)
+		var file := FileAccess.open(config_file.path_join("retroarch.cfg"), FileAccess.READ)
 		if file:
 			while file.get_position() < file.get_length():
 				var line := file.get_line()
@@ -32,12 +32,12 @@ static func get_config_path() -> String:
 			# RetroArch uses either XDG_CONFIG_HOME or HOME.
 			var xdg := OS.get_environment("XDG_CONFIG_HOME")
 			if not xdg.is_empty():
-				var path := xdg + "/retroarch"
+				var path := xdg.path_join("retroarch")
 				if DirAccess.dir_exists_absolute(path):
 					return path
 			else:
 				# Default to HOME
-				var path := FileUtils.get_home_dir() + "/.config/retroarch"
+				var path := FileUtils.get_home_dir().path_join(".config/retroarch")
 				if DirAccess.dir_exists_absolute(path):
 					return path
 			return ""

source/importers/ESDEImporter.gd

@@ -3,10 +3,10 @@ extends EmulationStationImporter
 class_name ESDEImporter
 
 func _init():
-	config_path = FileUtils.get_home_dir() + "/ES-DE"
-	media_path = config_path + "/downloaded_media"
-	gamelists_path = config_path + "/gamelists"
-	config_file_path = config_path + "/settings/es_settings.xml"
+	config_path = FileUtils.get_home_dir().path_join("ES-DE")
+	media_path = config_path.path_join("downloaded_media")
+	gamelists_path = config_path.path_join("gamelists")
+	config_file_path = config_path.path_join("settings/es_settings.xml")
 
 # Returns this importer name
 func get_importer_name() -> String:

source/importers/EmulationStationImporter.gd

@@ -7,10 +7,10 @@ var theme_support : int
 # Config level 7 is already ES-DE.
 const MAXIMUM_SUPPORTED_CONFIG_LEVEL = 7
 
-var config_path := FileUtils.get_home_dir() + "/.emulationstation"
-var media_path := config_path + "/downloaded_media"
-var gamelists_path := config_path + "/gamelists"
-var config_file_path := config_path + "/es_settings.xml"
+var config_path := FileUtils.get_home_dir().path_join(".emulationstation")
+var media_path := config_path.path_join("downloaded_media")
+var gamelists_path := config_path.path_join("gamelists")
+var config_file_path := config_path.path_join("es_settings.xml")
 var folder_size : int = -1
 
 var game_datas := {}
@@ -95,7 +95,7 @@ func is_available() -> bool:
 		return false
 
 	# Are the theme's config version too recent?
-	var theme_path := config_path + "/themes"
+	var theme_path := config_path.path_join("themes")
 	var config_level : int = -1
 	var dir := DirAccess.open(theme_path)
 	if dir and not dir.list_dir_begin() :# TODOGODOT4 fill missing arguments https://github.com/godotengine/godot/pull/40547
@@ -114,7 +114,7 @@ func is_available() -> bool:
 func check_theme_config_level(base_path: String) -> int:
 
 	# Query first at root, and only move to folders if it doesn't exist
-	var root_file := base_path + "/theme.xml"
+	var root_file := base_path.path_join("theme.xml")
 	if FileAccess.file_exists(root_file):
 		var config_level := inspect_theme_xml(root_file)
 		if config_level != -1:

source/importers/RetroArchImporter.gd

@@ -82,8 +82,8 @@ func is_available() -> bool:
 
 func set_paths(root: String):
 	config_path = root
-	thumbnails_path = config_path + "/thumbnails"
-	playlists_path = config_path + "/playlists"
+	thumbnails_path = config_path.path_join("thumbnails")
+	playlists_path = config_path.path_join("playlists")
 
 # Begins the import process. `copy` determines if the user wants
 # to copy previous data and, therefore, not affect the other game library

source/integrations/RetroAchievementsIntegration.gd

@@ -475,7 +475,7 @@ func _ready() -> void:
 	Raw.http.timeout = 10
 	add_child(Raw.http)
 
-	FileUtils.ensure_path(get_cheevos_dir() + "/")
+	FileUtils.ensure_dir(get_cheevos_dir())
 
 func _download_hash_cache() -> int:
 	var path := get_cheevos_hash_cache_path()

source/utils/FileUtils.gd

@@ -20,9 +20,12 @@ func test_for_valid_path(paths) -> String:
 				return expanded_path
 	return ""
 
+func ensure_dir(dir: String):
+	if DirAccess.make_dir_recursive_absolute(dir):
+		push_error("Failed to create directory %s" % dir)
+
 func ensure_path(path: String):
-	if DirAccess.make_dir_recursive_absolute(path.get_base_dir()):
-		push_error("Failed to create directory %s" % path.get_base_dir())
+	ensure_dir(path.get_base_dir())
 
 func expand_path(path: String) -> String:
 	# Replace ~ by home