Modul:Wikibase

Die Dokumentation für dieses Modul kann unter Modul:Wikibase/Doku erstellt werden

local util = {}

local function trim(s)
	if type(s) ~= 'string' then return s end
	return (s:gsub('^%s+', ''):gsub('%s+$', ''))
end

util.trim = trim

function util.getArgs(frame)
	local args = {}
	if not frame then return args end
	for k, v in pairs(frame.args or {}) do
		if v ~= '' and v ~= nil then args[k] = v end
	end
	return args
end

function util.getEntityType(id)
	if type(id) ~= 'string' then return nil end
	if id:match('^Q%d+$') then return 'item' end
	if id:match('^P%d+$') then return 'property' end
	if id:match('^L%d+$') then return 'lexeme' end
	return nil
end

function util.detectEntityId(args)
	local ordered = {}
	local function push(v)
		if v ~= nil and v ~= '' then table.insert(ordered, v) end
	end
	push(args.L or args.lexeme or args.l)
	push(args.P or args.p)
	push(args.Q or args.q)
	push(args.entity or args.Entity)
	push(args.id or args.ID)
	push(args[1])

	for _, v in ipairs(ordered) do
		local s = trim(tostring(v))
		if s ~= '' then
			local id = s:match('^[QPL]%d+$')
			if not id then id = s:match('^.-:([QPL]%d+)$') end
			if id then return id end
		end
	end

	local ok, currentId = pcall(mw.wikibase.getEntityIdForCurrentPage)
	if ok and type(currentId) == 'string' and currentId:match('^[QPL]%d+$') then
		return currentId
	end
	return nil
end

function util.getContentLangCode()
	local code = 'de'
	if mw.getContentLanguage then
		local cl = mw.getContentLanguage()
		if cl and cl.getCode then
			code = cl:getCode()
		end
	end
	return code
end

function util.getEntityLabelOrLemma(entityId)
	if not entityId then return nil end
	local etype = util.getEntityType(entityId)

	if etype == 'lexeme' then
		local ok, entity = pcall(mw.wikibase.getEntity, entityId)
		if ok and type(entity) == 'table' and type(entity.lemmas) == 'table' then
			local lang = util.getContentLangCode()
			local l = entity.lemmas[lang]
			if l and type(l) == 'table' and l.value and l.value ~= '' then
				return l.value
			end
			for _, obj in pairs(entity.lemmas) do
				if type(obj) == 'table' and obj.value and obj.value ~= '' then
					return obj.value
				end
			end
		end
	end

	local ok, label = pcall(mw.wikibase.getLabel, entityId)
	if ok and type(label) == 'string' and label ~= '' then return label end
	return entityId
end

function util.getDescription(entityId)
	local ok, desc = pcall(mw.wikibase.getDescription, entityId)
	if ok and type(desc) == 'string' and desc ~= '' then return desc end
	return nil
end

function util.buildEntityLink(entityId, linkText, target)
    linkText = trim(tostring(linkText or '')):gsub('[\r\n]+', ' ')
    target = (target and tostring(target):lower()) or 'special'

    if target == 'ns' then
        local etype = util.getEntityType(entityId)
        local prefix =
            (etype == 'item' and 'Item:') or
            (etype == 'property' and 'Property:') or
            (etype == 'lexeme' and 'Lexeme:') or
            ''
        local text = (linkText ~= '' and linkText) or entityId
        return string.format('[[%s%s|%s]]', prefix, entityId, text)
    end

    -- Default: Special:EntityPage/...
    local text = (linkText ~= '' and linkText) or entityId
    return string.format('[[Special:EntityPage/%s|%s]]', entityId, text)
end

function util.setShortdesc(frame, text)
    if not frame then return '' end
    text = trim(tostring(text or '')):gsub('[\r\n]+', ' ')
    if text == '' then return '' end

    local ok, result = pcall(function()
        return frame:callParserFunction('SHORTDESC', text)
    end)
    if not ok then return '' end
    return result or ''
end

return util