discourse/lib/js_locale_helper.rb

75 lines
2.4 KiB
Ruby

module JsLocaleHelper
def self.output_locale(locale, translations = nil)
locale_str = locale.to_s
translations ||= YAML::load(File.open("#{Rails.root}/config/locales/client.#{locale_str}.yml"))
# We used to split the admin versus the client side, but it's much simpler to just
# include both for now due to the small size of the admin section.
#
# For now, let's leave it split out in the translation file in case we want to split
# it again later, so we'll merge the JSON ourselves.
admin_contents = translations[locale_str].delete('admin_js')
translations[locale_str]['js'].merge!(admin_contents) if admin_contents.present?
message_formats = strip_out_message_formats!(translations[locale_str]['js'])
result = generate_message_format(message_formats, locale_str)
result << "I18n.translations = #{translations.to_json};\n"
result << "I18n.locale = '#{locale_str}'\n"
result
end
def self.generate_message_format(message_formats, locale_str)
formats = message_formats.map{|k,v| k.inspect << " : " << compile_message_format(locale_str ,v)}.join(" , ")
result = "MessageFormat = {locale: {}};\n"
result << File.read(Rails.root + "lib/javascripts/locale/#{locale_str}.js") << "\n"
result << "I18n.messageFormat = (function(formats){
var f = formats;
return function(key, options) {
var fn = f[key];
if(fn){
try {
return fn(options);
} catch(err) {
return err.message;
}
} else {
return 'Missing Key: ' + key
}
return f[key](options);
};
})({#{formats}});"
end
def self.compile_message_format(locale, format)
ctx = V8::Context.new
ctx.load(Rails.root + 'lib/javascripts/messageformat.js')
ctx.eval("mf = new MessageFormat('#{locale}');")
ctx.eval("mf.precompile(mf.parse(#{format.inspect}))")
rescue V8::Error => e
message = "Invalid Format: " << e.message
"function(){ return #{message.inspect};}"
end
def self.strip_out_message_formats!(hash, prefix = "", rval = {})
if Hash === hash
hash.each do |k,v|
if Hash === v
rval.merge!(strip_out_message_formats!(v, prefix + (prefix.length > 0 ? "." : "") << k, rval))
elsif k.end_with?("_MF")
rval[prefix + (prefix.length > 0 ? "." : "") << k] = v
hash.delete(k)
end
end
end
rval
end
end