discourse/lib/js_locale_helper.rb

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# frozen_string_literal: true
module JsLocaleHelper
def self.plugin_client_files(locale_str)
files = Dir["#{Rails.root}/plugins/*/config/locales/client*.#{locale_str}.yml"]
I18n::Backend::DiscourseI18n.sort_locale_files(files)
end
def self.reloadable_plugins(locale_sym, ctx)
return unless Rails.env.development?
I18n.fallbacks[locale_sym].each do |locale|
plugin_client_files(locale.to_s).each { |file| ctx.depend_on(file) }
end
end
def self.plugin_translations(locale_str)
@plugin_translations ||= HashWithIndifferentAccess.new
@plugin_translations[locale_str] ||= begin
translations = {}
plugin_client_files(locale_str).each do |file|
if plugin_translations = YAML.load_file(file)[locale_str]
translations.deep_merge!(plugin_translations)
end
end
translations
end
end
def self.load_translations(locale)
@loaded_translations ||= HashWithIndifferentAccess.new
@loaded_translations[locale] ||= begin
locale_str = locale.to_s
# load default translations
yml_file = "#{Rails.root}/config/locales/client.#{locale_str}.yml"
if File.exist?(yml_file)
translations = YAML.load_file(yml_file)
else
# If we can't find a base file in Discourse, it might only exist in a plugin
# so let's start with a basic object we can merge into
translations = { locale_str => { "js" => {}, "admin_js" => {}, "wizard_js" => {} } }
end
# merge translations (plugin translations overwrite default translations)
if translations[locale_str] && plugin_translations(locale_str)
translations[locale_str]["js"] ||= {}
translations[locale_str]["admin_js"] ||= {}
translations[locale_str]["wizard_js"] ||= {}
if plugin_translations(locale_str)["js"]
translations[locale_str]["js"].deep_merge!(plugin_translations(locale_str)["js"])
end
if plugin_translations(locale_str)["admin_js"]
translations[locale_str]["admin_js"].deep_merge!(
plugin_translations(locale_str)["admin_js"],
)
end
if plugin_translations(locale_str)["wizard_js"]
translations[locale_str]["wizard_js"].deep_merge!(
plugin_translations(locale_str)["wizard_js"],
)
end
end
translations
end
end
# deeply removes keys from "deleting_from" that are already present in "checking_hashes"
def self.deep_delete_matches(deleting_from, checking_hashes)
checking_hashes.compact!
new_hash = deleting_from.dup
deleting_from.each do |key, value|
if value.is_a?(Hash)
new_at_key = deep_delete_matches(deleting_from[key], checking_hashes.map { |h| h[key] })
if new_at_key.empty?
new_hash.delete(key)
else
new_hash[key] = new_at_key
end
else
new_hash.delete(key) if checking_hashes.any? { |h| h.include?(key) }
end
end
new_hash
end
def self.load_translations_merged(*locales)
locales = locales.uniq.compact
@loaded_merges ||= {}
@loaded_merges[locales.join("-")] ||= begin
all_translations = {}
merged_translations = {}
loaded_locales = []
locales
.map(&:to_s)
.each do |locale|
all_translations[locale] = load_translations(locale)
merged_translations[locale] = deep_delete_matches(
all_translations[locale][locale],
loaded_locales.map { |l| merged_translations[l] },
)
loaded_locales << locale
end
merged_translations
end
end
def self.clear_cache!
@loaded_translations = nil
@plugin_translations = nil
@loaded_merges = nil
end
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def self.translations_for(locale_str)
clear_cache! if Rails.env.development?
locale_sym = locale_str.to_sym
translations =
I18n.with_locale(locale_sym) do
if locale_sym == :en
load_translations(locale_sym)
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else
load_translations_merged(*I18n.fallbacks[locale_sym])
end
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end
Marshal.load(Marshal.dump(translations))
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end
def self.output_locale(locale)
locale_str = locale.to_s
fallback_locale_str = LocaleSiteSetting.fallback_locale(locale_str)&.to_s
translations = translations_for(locale_str)
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message_formats = remove_message_formats!(translations, locale)
mf_locale, mf_filename = find_message_format_locale([locale_str], fallback_to_english: true)
result = generate_message_format(message_formats, mf_locale, mf_filename)
translations.keys.each do |l|
translations[l].keys.each { |k| translations[l].delete(k) unless k == "js" }
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end
# I18n
result << "I18n.translations = #{translations.to_json};\n"
result << "I18n.locale = '#{locale_str}';\n"
if fallback_locale_str && fallback_locale_str != "en"
result << "I18n.fallbackLocale = '#{fallback_locale_str}';\n"
end
if mf_locale != "en"
result << "I18n.pluralizationRules.#{locale_str} = MessageFormat.locale.#{mf_locale};\n"
end
# moment
result << File.read("#{Rails.root}/vendor/assets/javascripts/moment.js")
result << File.read("#{Rails.root}/vendor/assets/javascripts/moment-timezone-with-data.js")
result << moment_locale(locale_str)
result << moment_locale(locale_str, timezone_names: true)
result << moment_formats
result
end
def self.output_client_overrides(main_locale)
all_overrides = {}
has_overrides = false
I18n.fallbacks[main_locale].each do |locale|
overrides =
all_overrides[locale] = TranslationOverride
.where(locale: locale)
.where("translation_key LIKE 'js.%' OR translation_key LIKE 'admin_js.%'")
.pluck(:translation_key, :value, :compiled_js)
has_overrides ||= overrides.present?
end
return "" if !has_overrides
result = +"I18n._overrides = {};"
existing_keys = Set.new
message_formats = []
all_overrides.each do |locale, overrides|
translations = {}
overrides.each do |key, value, compiled_js|
next if existing_keys.include?(key)
existing_keys << key
if key.end_with?("_MF")
message_formats << "#{key.inspect}: #{compiled_js}"
else
translations[key] = value
end
end
result << "I18n._overrides['#{locale}'] = #{translations.to_json};" if translations.present?
end
result << "I18n._mfOverrides = {#{message_formats.join(", ")}};"
result
end
def self.output_extra_locales(bundle, locale)
translations = translations_for(locale)
locales = translations.keys
locales.each do |l|
translations[l].keys.each do |k|
bundle_translations = translations[l].delete(k)
translations[l].deep_merge!(bundle_translations) if k == bundle
end
end
return "" if translations.blank?
output = +"if (!I18n.extras) { I18n.extras = {}; }"
locales.each { |l| output << <<~JS }
if (!I18n.extras["#{l}"]) { I18n.extras["#{l}"] = {}; }
Object.assign(I18n.extras["#{l}"], #{translations[l].to_json});
JS
output
end
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MOMENT_LOCALE_MAPPING ||= { "hy" => "hy-am" }
def self.find_moment_locale(locale_chain, timezone_names: false)
if timezone_names
path = "#{Rails.root}/vendor/assets/javascripts/moment-timezone-names-locale"
type = :moment_js_timezones
else
path = "#{Rails.root}/vendor/assets/javascripts/moment-locale"
type = :moment_js
end
find_locale(locale_chain, path, type, fallback_to_english: false) do |locale|
locale = MOMENT_LOCALE_MAPPING[locale] if MOMENT_LOCALE_MAPPING.key?(locale)
# moment.js uses a different naming scheme for locale files
locale.tr("_", "-").downcase
end
end
def self.find_message_format_locale(locale_chain, fallback_to_english:)
path = "#{Rails.root}/lib/javascripts/locale"
find_locale(locale_chain, path, :message_format, fallback_to_english: fallback_to_english)
end
def self.find_locale(locale_chain, path, type, fallback_to_english:)
locale_chain.map!(&:to_s)
locale_chain.each do |locale|
plugin_locale = DiscoursePluginRegistry.locales[locale]
return plugin_locale[type] if plugin_locale&.has_key?(type)
locale = yield(locale) if block_given?
filename = File.join(path, "#{locale}.js")
return locale, filename if File.exist?(filename)
end
locale_chain.map! { |locale| yield(locale) } if block_given?
# try again, but this time only with the language itself
locale_chain =
locale_chain.map { |l| l.split(/[-_]/)[0] }.uniq.reject { |l| locale_chain.include?(l) }
if locale_chain.any?
locale_data = find_locale(locale_chain, path, type, fallback_to_english: false)
return locale_data if locale_data
end
# English should always work
["en", File.join(path, "en.js")] if fallback_to_english
end
def self.moment_formats
result = +""
result << moment_format_function("short_date_no_year")
result << moment_format_function("short_date")
result << moment_format_function("long_date")
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result << "moment.fn.relativeAge = function(opts){ return Discourse.Formatter.relativeAge(this.toDate(), opts)};\n"
end
def self.moment_format_function(name)
format = I18n.t("dates.#{name}")
"moment.fn.#{name.camelize(:lower)} = function(){ return this.format('#{format}'); };\n"
end
def self.moment_locale(locale, timezone_names: false)
_, filename = find_moment_locale([locale], timezone_names: timezone_names)
filename && File.exist?(filename) ? File.read(filename) << "\n" : ""
end
def self.generate_message_format(message_formats, locale, filename)
formats =
message_formats
.map { |k, v| k.inspect << " : " << compile_message_format(filename, locale, v) }
.join(", ")
result = +"MessageFormat = {locale: {}};\n"
result << "I18n._compiledMFs = {#{formats}};\n"
result << File.read(filename) << "\n"
if locale != "en"
# Include "en" pluralization rules for use in fallbacks
_, en_filename = find_message_format_locale(["en"], fallback_to_english: false)
result << File.read(en_filename) << "\n"
end
result << File.read("#{Rails.root}/lib/javascripts/messageformat-lookup.js") << "\n"
end
def self.reset_context
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@ctx&.dispose
@ctx = nil
end
@mutex = Mutex.new
def self.with_context
@mutex.synchronize do
yield(
@ctx ||=
begin
ctx = MiniRacer::Context.new(timeout: 15_000, ensure_gc_after_idle: 2000)
ctx.load(
"#{Rails.root}/app/assets/javascripts/node_modules/messageformat/messageformat.js",
)
ctx
end
)
end
end
def self.compile_message_format(path, locale, format)
with_context do |ctx|
ctx.load(path) if File.exist?(path)
ctx.eval("mf = new MessageFormat('#{locale}');")
ctx.eval("mf.precompile(mf.parse(#{format.inspect}))")
end
rescue MiniRacer::EvalError => e
message = +"Invalid Format: " << e.message
"function(){ return #{message.inspect};}"
end
def self.remove_message_formats!(translations, locale)
message_formats = {}
I18n.fallbacks[locale]
.map(&:to_s)
.each do |l|
next unless translations.key?(l)
%w[js admin_js].each do |k|
message_formats.merge!(strip_out_message_formats!(translations[l][k]))
end
end
message_formats
end
def self.strip_out_message_formats!(hash, prefix = "", message_formats = {})
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if hash.is_a?(Hash)
hash.each do |key, value|
if value.is_a?(Hash)
message_formats.merge!(
strip_out_message_formats!(value, join_key(prefix, key), message_formats),
)
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elsif key.to_s.end_with?("_MF")
message_formats[join_key(prefix, key)] = value
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hash.delete(key)
end
end
end
message_formats
end
def self.join_key(prefix, key)
prefix.blank? ? key : "#{prefix}.#{key}"
end
end