Difference between revisions of "Module:Template translation"
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>Verdy p m |
>Verdy p m (support the uselang parameter) |
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Line 96: | Line 96: | ||
-- Get the last subpage and check if it matches a known language code. | -- Get the last subpage and check if it matches a known language code. | ||
local subpage = this.getLanguageSubpage() | local subpage = args['uselang'] or '' | ||
if (subpage == '') then | |||
subpage = this.getLanguageSubpage() | |||
end | |||
if (subpage == '') | if (subpage == '') | ||
then | then |
Revision as of 16:31, 1 February 2014
Documentation for this module may be created at Module:Template translation/doc
local this = {}
function this.checkLanguage(subpage, default)
--[[Check first if there's an apostrophe, because they break the isKnownLanguageTag
function. This test does not work with regexps, use plain search instead (no need
to use Unicode parser, apostrophes can only appear isolated as one byte in UTF-8).
]]
if (string.find(subpage, "'", 1, true) == nil)
then
-- Return the subpage only if it is a valid language code.
if (mw.language.isKnownLanguageTag(subpage))
then
return subpage
end
end
-- Otherwise there's currently no known language subpage
return default
end
--[[Get the last subpage of the current page if it is a translation.
]]
function this.getLanguageSubpage()
--[[This code does not work ib all namespaces where the Translate tool works.
-- It works in the main namespace on Meta because it allows subpages there
-- It would not work in the main namespace of English Wikipedia (but the
-- articles are monolignual on that wiki).
-- On Meta-Wiki the main space uses subpages and its pages are translated.
-- The Translate tool allows translatng pages in all namespaces, even if
-- the namespace officially does not have subpages.
-- On Meta-Wiki the Category namespace still does not have subpages enabled,
-- even if they would be very useful for categorizing templates, that DO have
-- subpages (for documentatio and tstboxes pages). This is a misconfiguration
-- bug of Meta-Wiki. The work-around is to split the full title and then
-- get the last titlepart.
local subpage = mw.title.getCurrentTitle().subpageText
--]]
local titleparts = mw.text.split(mw.title.getCurrentTitle().fullText, '/')
local subpage = titleparts[#titleparts]
return this.checkLanguage(subpage, '')
end
--[[Get the last subpage of the current frame if it is a translation.
Not used locally.
]]
function this.getFrameLanguageSubpage(frame)
local titleparts = mw.text.split(frame:getParent():getTitle(), '/')
local subpage = titleparts[#titleparts]
return this.checkLanguage(subpage, '')
end
--[[Get the language of the current page.
Not used locally.
]]
function this.getLanguage()
local subpage = mw.title.getCurrentTitle().subpageText
return this.checkLanguage(subpage, mw.language.getContentLanguage():getCode())
end
--[[Get the language of the current frame.
Not used locally.
]]
function this.getFrameLanguage(frame)
local titleparts = mw.text.split(frame:getParent():getTitle(), '/')
local subpage = titleparts[#titleparts]
return this.checkLanguage(subpage, mw.language.getContentLanguage():getCode())
end
--[[If on a translation subpage (like Foobar/de), this function renders
a given template in the same language, if the translation is available.
Otherwise, the template is rendered in its default language, without
modification.
This is aimed at replacing the current implementation of Template:TNT.
]]
function this.renderTranslatedTemplate(frame)
local args = frame.args
local pagename = args['template']
--[[Check whether the pagename is actually in the Template namespace, or
if we're transcluding a main-namespace page.
(added for backward compatibility of Template:TNT)
]]
local title
local namespace = args['namespace'] or ''
if (namespace ~= '') -- Checks for namespace parameter for custom ns.
then
title = mw.title.new(pagename, namespace) -- Costly
else -- Supposes that set page is in ns10.
namespace = 'Template'
title = mw.title.new(pagename, namespace) -- Costly
if (title.id == 0)
then -- not found in the Template namespace, assume the main namespace (for backward compatibility)
namespace = ''
title = mw.title.new(pagename, namespace) -- Costly
end
end
-- Get the last subpage and check if it matches a known language code.
local subpage = args['uselang'] or ''
if (subpage == '') then
subpage = this.getLanguageSubpage()
end
if (subpage == '')
then
-- Check if a translation of the pagename exists in English
local newtitle = mw.title.new(pagename .. '/' .. 'en', namespace) -- Costly
-- Use the translation when it exists
if (newtitle.id ~= 0)
then
title = newtitle
end
else
-- Check if a translation of the pagename exists in that language
local newtitle = mw.title.new(pagename .. '/' .. subpage, namespace) -- Costly
if (newtitle.id == 0)
then
-- Check if a translation of the pagename exists in English
newtitle = mw.title.new(pagename .. '/' .. 'en', namespace) -- Costly
end
-- Use the translation when it exists
if (newtitle.id ~= 0)
then
title = newtitle
end
end
-- At this point the title should exist, otherwise render a red link to the missing page (resolved in its assumed namespace)
if (title.id == 0)
then
return '[[' .. title.prefixedText .. ']]'
end
-- Copy args pseudo-table to a proper table so we can feed it to expandTemplate.
-- Then render the pagename.
local arguments = {}
for k, v in pairs((frame:getParent() or {}).args) do
-- numbered args >= 1 need to be shifted
local n = tonumber(k) or 0
if (n > 0)
then
if (n >= 2)
then
arguments[n - 1] = v
end
else
arguments[k] = v
end
end
arguments['template'] = title.prefixedText -- override the existing parameter of the base template name supplied with the full name of the actual template expanded
arguments['namespace'] = nil -- discard the specified namespace override
return frame:expandTemplate{title = ':' .. title.prefixedText, args = arguments}
end
return this