Add mpv config

mpv/scripts/uosc/lib/intl.lua

@@ -0,0 +1,68 @@
+local intl_dir = mp.get_script_directory() .. '/intl/'
+local locale = {}
+local cache = {}
+
+-- https://learn.microsoft.com/en-us/windows/apps/publish/publish-your-app/supported-languages?pivots=store-installer-msix#list-of-supported-languages
+function get_languages()
+	local languages = {}
+
+	for _, lang in ipairs(comma_split(options.languages)) do
+		if (lang == 'slang') then
+			local slang = mp.get_property_native('slang')
+			if slang then
+				itable_append(languages, slang)
+			end
+		else
+			languages[#languages +1] = lang
+		end
+	end
+
+	return languages
+end
+
+---@param path string
+function get_locale_from_json(path)
+	local expand_path = mp.command_native({'expand-path', path})
+
+	local meta, meta_error = utils.file_info(expand_path)
+	if not meta or not meta.is_file then
+		return nil
+	end
+
+	local json_file = io.open(expand_path, 'r')
+	if not json_file then
+		return nil
+	end
+
+	local json = json_file:read('*all')
+	json_file:close()
+
+	local json_table = utils.parse_json(json)
+	return json_table
+end
+
+---@param text string
+function t(text, a)
+	if not text then return '' end
+	local key = text
+	if a then key = key .. '|' .. a end
+	if cache[key] then return cache[key] end
+	cache[key] = string.format(locale[text] or text, a or '')
+	return cache[key]
+end
+
+-- Load locales
+local languages = get_languages()
+
+for i = #languages, 1, -1 do
+	lang = languages[i]
+	if (lang:match('.json$')) then
+		table_assign(locale, get_locale_from_json(lang))
+	elseif (lang == 'en') then
+		locale = {}
+	else
+		table_assign(locale, get_locale_from_json(intl_dir .. lang:lower() .. '.json'))
+	end
+end
+
+return {t = t}