Module:Autotranslate

Warning:

Do not edit. This page is maintained by an automated tool. All edits should be done at commons.wikimedia.org. (translate this warning)

This module is rated as ready for general use. It has reached a mature form and is thought to be relatively bug-free and ready for use wherever appropriate. It is ready to mention on help pages and other Wikipedia resources as an option for new users to learn. To reduce server load and bad output, it should be improved by sandbox testing rather than repeated trial-and-error editing.

This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.

Code for {{Autotranslate}}. Also used for {{Autotranslate/clone 1}}, {{Autotranslate/clone 2}}. {{Autotranslate/clone 3}}, {{Autotranslate/clone 4}}, {{Autotranslate/clone 5}}, {{Documentation subpage}}.

  --[[
  __  __           _       _           _         _        _                       _       _       
 |  \/  | ___   __| |_   _| | ___ _   / \  _   _| |_ ___ | |_ _ __ __ _ _ __  ___| | __ _| |_ ___ 
 | |\/| |/ _ \ / _` | | | | |/ _ (_) / _ \| | | | __/ _ \| __| '__/ _` | '_ \/ __| |/ _` | __/ _ \
 | |  | | (_) | (_| | |_| | |  __/_ / ___ \ |_| | || (_) | |_| | | (_| | | | \__ \ | (_| | ||  __/
 |_|  |_|\___/ \__,_|\__,_|_|\___(_)_/   \_\__,_|\__\___/ \__|_|  \__,_|_| |_|___/_|\__,_|\__\___|
 
 Authors and maintainers:
* User:Zolo   - original version
* User:Jarekt 
]]

-- local function to help normalize input arguments
local function normalize_input_args(input_args, output_args)
	for name, value in pairs( input_args ) do 
		if value ~= '' then -- nuke empty strings
			if type(name)=='string' then name=string.lower(name) end -- convert to lower case
			output_args[name] = value
		end
	end
	return output_args
end

-- initialize object to be returned
local p = {}

--[[
autotranslate
 
This function is the core part of the Autotranslate template. 
 
Usage from a template:
{{#invoke:autotranslate|autotranslate|base=|lang= }}
 
Parameters:
  frame.args.base - base page name
  frame.args.lang - desired language (often user's native language)

 Error Handling:

]]
function p.autotranslate(frame) 

	-- switch to lowercase parameters to make them case independent
	local args = {}
	args = normalize_input_args(frame:getParent().args, args)
	args = normalize_input_args(frame.args, args)

	-- get language fallback list
	if not args.lang or not mw.language.isSupportedLanguage(args.lang) then
		args.lang = frame:callParserFunction( "int", "lang" )           -- get user's chosen language 
	end
	local langList = mw.language.getFallbacksFor(args.lang)
	table.insert(langList,1,args.lang)

	-- find base page
	local base = args.base
	args.base = nil
	assert(base and  #base>0, 'Base page not provided for autotranslate' )
	if not mw.ustring.find(base,':') then   -- if base page does not indicate namespace
		base = 'Template:' .. base          -- then assume it is a template 
	end
 
	-- find base template language subpage
	local page = args.default  -- default page if provided or nil otherwise
	for _, language in ipairs(langList) do
		if mw.title.new(base .. '/' .. language).exists then
			page =  base .. '/' .. language -- returns only the page
			break
		end
	end
	assert(page, string.format('No fallback page found for autotranslate (base=[[%s]], lang=%s)', base, args.lang))
 
	-- Transclude {{page |....}} with template arguments the same as the ones passed to {{autotranslate}} template.
	return frame:expandTemplate{ title = page, args = args}
end

return p