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15c013922d
A "shadow directory" is now populated when the reload occurs and then swapped as the active directory. This avoids breaking the directory structure or changing files when other threads are possibly working on them. Fixes #3595
164 lines
4.1 KiB
Lua
164 lines
4.1 KiB
Lua
--
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-- (C) 2014-20 - ntop.org
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--
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i18n = require "i18n"
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local dirs = ntop.getDirs()
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local locales = {}
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-- ##############################################
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local default_locale = "en"
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local default_locale_path = dirs.installdir..'/scripts/locales/en.lua'
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local available_locales = {}
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local locales_initialized = false
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local supported_locales = {
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{code = "en"},
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{code = "it"},
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{code = "de"},
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{code = "jp"},
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{code = "pt"},
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{code = "cz"}
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}
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local nedge_supported_locales = {
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["jp"] = true,
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["en"] = true,
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}
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-- ##############################################
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local function loadfile_to_data(file_path)
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local data = {}
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-- `loadfile` opens the named `file_path`, parses it and returns the compiled chunk as a function.
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-- Does not execute it.
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local chunk = assert(loadfile(file_path))
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data = chunk()
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-- Execution can return nil when the parsed `file_path` does not end with a return statement
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if not data then
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traceError(TRACE_ERROR, TRACE_CONSOLE, string.format("Execution of loaded chunk returned nil for %s", file_path))
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end
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return data or {}
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end
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-- ##############################################
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function locales.loadLocaleFile(path, locale)
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local data = loadfile_to_data(path)
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local os_utils = require("os_utils")
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local plugins_utils = require("plugins_utils")
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-- Check if plugin specific locales exist
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local plugins_locales = os_utils.fixPath(plugins_utils.getRuntimePath() .. "/locales/" .. locale .. ".lua")
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if ntop.exists(plugins_locales) then
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local plugins_data = loadfile_to_data(plugins_locales)
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-- Add the plugins localized strings
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for k, v in pairs(plugins_data) do
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data[k] = v
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end
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end
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i18n.load({[locale]=data})
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end
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-- ##############################################
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local function lookupLocale(localename)
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local base_path = dirs.installdir..'/scripts/locales/'
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local locale_path = base_path .. localename .. ".lua"
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if ntop.exists(locale_path) then
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return locale_path
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end
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return nil
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end
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-- ##############################################
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local function initLocales()
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if(locales_initialized) then
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-- Already initialized
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return
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end
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local is_nedge = ntop.isnEdge()
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-- Provides a fallback for not already localized strings
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locales.loadLocaleFile(default_locale_path, default_locale)
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locales.default_locale = default_locale
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-- language is a global variable set from C that corresponds to the user default language
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-- it may be null when lua_utils are imported from periodic scripts
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if language == nil then
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local admin_lang = ntop.getPref("ntopng.user.admin.language")
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language = ternary(isEmptyString(admin_lang), locales.default_locale, admin_lang)
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end
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i18n.setLocale(language)
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-- Note: en already loaded
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if ((not is_nedge) or nedge_supported_locales[language]) then
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local locale_path = lookupLocale(language)
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if locale_path then
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locales.loadLocaleFile(locale_path, language)
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end
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end
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-- use pairsByKeys to impose an order
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for _, locale in ipairs(supported_locales) do
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local localename = locale["code"]
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if ((not is_nedge) or nedge_supported_locales[localename]) and lookupLocale(localename) then
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available_locales[#available_locales + 1] = locale
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end
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end
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locales_initialized = true
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end
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-- ##############################################
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function locales.getAvailableLocales()
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initLocales()
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return available_locales
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end
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-- ##############################################
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function locales.readDefaultLocale()
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local data = loadfile_to_data(default_locale_path)
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return(data)
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end
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-- ##############################################
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-- Locales lazy loading: only load them when a script calls i18n(...)
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local orig_i18n_metatable = getmetatable(i18n)
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local i18n_mt = {}
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-- Replace the i18n(...) invocation
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function i18n_mt.__call(...)
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-- ensure that the loacales are loaded
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initLocales()
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-- call the original i18n function
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return(orig_i18n_metatable.__call(...))
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end
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setmetatable(i18n, i18n_mt)
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-- ##############################################
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return locales
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