Module:Statement

Documentation for this module may be created at Module:Statement/doc

local get_label = require('Module:Wikidata label')._getLabel

local function format_id(id)
	return get_label(id, nil, 'wikidata', nil, 1)
end

local p = {}

local function format_thing (thing)
	if thing then
		if thing:match('^[QP]?%d+$') then
			return format_id(thing)
		end
	end
	return thing
end

local function format_predicate(pred)
	if pred:match('^[P]%d+$') then
		return format_id(pred)
	elseif pred:match('^%d+$') then
		return format_id('P' .. pred)
	end
	return pred
end

local function missing(i)
	return '{{{' .. i .. '}}}'
end

-- debug with e.g. =p.main(nil, {'you', 'P2283', 'Q207316'})
function p.main (frame, debugArgs)
	local args = debugArgs or frame:getParent().args
	
	-- 1. parse arguments
	-- (We're not using table.remove because that doesn't work with MediaWiki's frame object)
	local subject = args[1]
	local predicate = args[2] or missing(2)
	local object = args[3] or missing(3)
	local qualifiers = {}
	
	local i = 4
	-- (We're not using a for loop because #args doesn't work with MediaWiki's frame object)
	while args[i] do
		table.insert(qualifiers, {args[i], args[i+1]})
		i = i + 2
	end
	
	-- 2. build HTML
	local stmt = mw.html.create('span'):attr('class', 'statement')
	if subject ~= '' then
		stmt:tag('b'):attr('class', 'subject'):wikitext(format_thing(subject))
	end
	
	stmt:tag('span'):attr('class', 'predicate'):wikitext(format_predicate(predicate))
	stmt:tag('span'):attr('class', 'object'):wikitext(format_thing(object))
	
	for i, qual in pairs(qualifiers) do
		stmt:wikitext('<wbr>')
		local qual_span = stmt:tag('span'):attr('class', 'qualifier')
		qual_span:tag('span'):attr('class', 'predicate'):wikitext(format_predicate(qual[1]))
		qual_span:tag('span'):attr('class', 'object'):wikitext(format_thing(qual[2]) or missing(3 + i*2))
	end

	return tostring(stmt)
end

return p