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Line 1: − -- This module implements [[Template:Ns has subpages]].+ − -- While the template is fairly simple, this information is made available to+ − -- Lua directly, so using a module means that we don't have to update the+ − -- template as new namespaces are added.+ − − local p = {} − − function p._main(ns, frame) − -- Get the current namespace if we were not passed one. − if not ns then − ns = mw.title.getCurrentTitle().namespace − end − − -- Look up the namespace table from mw.site.namespaces. This should work − -- for a majority of cases. − local nsTable = mw.site.namespaces[ns] − − -- Try using string matching to get the namespace from page names. − -- Do a quick and dirty bad title check to try and make sure we do the same − -- thing as {{NAMESPACE}} in most cases. − if not nsTable and type(ns) == 'string' and not ns:find('[<>|%[%]{}]') then − local nsStripped = ns:gsub('^[_%s]*:', '') − nsStripped = nsStripped:gsub(':.*$', '') − nsTable = mw.site.namespaces[nsStripped] − end − − -- If we still have no match then try the {{NAMESPACE}} parser function, − -- which should catch the remainder of cases. Don't use a mw.title object, − -- as this would increment the expensive function count for each new page − -- tested. − if not nsTable then − frame = frame or mw.getCurrentFrame() − local nsProcessed = frame:callParserFunction('NAMESPACE', ns) − nsTable = nsProcessed and mw.site.namespaces[nsProcessed] − end − − return nsTable and nsTable.hasSubpages − end − − function p.main(frame) − local ns = frame:getParent().args[1] − if ns then − ns = ns:match('^%s*(.-)%s*$') -- trim whitespace − ns = tonumber(ns) or ns − end − local hasSubpages = p._main(ns, frame) − return hasSubpages and 'yes' or '' − end − − return p
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{{<includeonly>safesubst:</includeonly>#invoke:Ns has subpages|main}}<noinclude>
{{documentation}}
<!-- Categories go on the /doc subpage and interwikis go on Wikidata. -->
</noinclude>