Initial flame_lua_runtime package

example/assets/games/ludo/scripts/i18n.lua

@@ -0,0 +1,103 @@
+---@class RuntimeI18n
+local i18n = {}
+
+local default_locale = "zh-Hans"
+local current_locale = default_locale
+
+local messages = {
+  ["zh-Hans"] = {
+    title = "Lua 飞行棋",
+    roll_button = "掷骰子",
+    dice_empty = "骰子: -",
+    dice_value = "骰子: {value}",
+    current_player = "当前玩家: {player}",
+    ["player.red"] = "红方",
+    ["player.blue"] = "蓝方",
+    ["toast.move_first"] = "请先移动棋子",
+    ["toast.no_movable_piece"] = "无可移动棋子",
+    ["toast.invalid_piece"] = "该棋子不能移动"
+  },
+  en = {
+    title = "Lua Ludo",
+    roll_button = "Roll",
+    dice_empty = "Dice: -",
+    dice_value = "Dice: {value}",
+    current_player = "Current player: {player}",
+    ["player.red"] = "Red",
+    ["player.blue"] = "Blue",
+    ["toast.move_first"] = "Move a piece first",
+    ["toast.no_movable_piece"] = "No movable pieces",
+    ["toast.invalid_piece"] = "This piece cannot move"
+  }
+}
+
+---@param locale? string
+---@return string
+local function normalize_locale(locale)
+  if type(locale) ~= "string" or locale == "" then
+    return default_locale
+  end
+  locale = string.gsub(locale, "_", "-")
+  if messages[locale] ~= nil then
+    return locale
+  end
+
+  local language = string.match(locale, "^([A-Za-z]+)")
+  if language ~= nil and messages[language] ~= nil then
+    return language
+  end
+  return default_locale
+end
+
+---@param value string
+---@return string
+local function escape_pattern(value)
+  return string.gsub(value, "([%(%)%.%%%+%-%*%?%[%]%^%$])", "%%%1")
+end
+
+---@param template string
+---@param vars? table<string, string|number>
+---@return string
+local function interpolate(template, vars)
+  if vars == nil then
+    return template
+  end
+
+  local result = template
+  for key, value in pairs(vars) do
+    result = string.gsub(result, "{" .. escape_pattern(key) .. "}", tostring(value))
+  end
+  return result
+end
+
+---@param ctx? RuntimeContext
+function i18n.configure(ctx)
+  local locale = nil
+  if ctx ~= nil and ctx.locale ~= nil then
+    locale = ctx.locale.resolved or ctx.locale.requested or ctx.locale.default
+  end
+  current_locale = normalize_locale(locale)
+end
+
+---@return string
+function i18n.locale()
+  return current_locale
+end
+
+---@param key string
+---@param vars? table<string, string|number>
+---@return string
+function i18n.t(key, vars)
+  local bundle = messages[current_locale] or messages[default_locale]
+  local fallback = messages[default_locale]
+  local value = bundle[key] or fallback[key] or key
+  return interpolate(value, vars)
+end
+
+---@param color PlayerColor
+---@return string
+function i18n.player(color)
+  return i18n.t("player." .. color)
+end
+
+return i18n