Module:WikidataIB

-- Module to try out use of a blacklist and whitelist for infobox fields -- can take a named parameter |qid which is the Wikidata ID for the article. This will not normally be used -- Fields in blacklist are never to be displayed, i.e. module must return nil in all circumstances -- Fields in whitelist return local value if it exists or the Wikidata value otherwise -- The name of the field that this function is called from is passed in named parameter |name -- The name is compulsory when blacklist or whitelist is used, so the module returns nil if it is not supplied -- blacklist is passed in named parameter |suppressfields -- whitelist is passed in named parameter |fetchwikidata

local p = {}

local i18n = {   ["errors"] = {       ["property-not-found"] = "Property not found.", ["entity-not-found"] = "Wikidata entity not found.", ["unknown-claim-type"] = "Unknown claim type.", ["unknown-entity-type"] = "Unknown entity type.", ["qualifier-not-found"] = "Qualifier not found.", ["site-not-found"] = "Wikimedia project not found.", ["unknown-datetime-format"] = "Unknown datetime format.", ["local-article-not-found"] = "Article is not yet available in this wiki" }, }

-- This is used to get a value, or a comma separated list of them if multiple values exist p.getValue = function(frame) local propertyID = mw.text.trim(frame.args[1] or "") -- There may be a local parameter supplied, if it's blank, set it to nil local input_parm = mw.text.trim(frame.args[2] or "") if input_parm and (#input_parm == 0) then input_parm = nil end -- can take a named parameter |qid which is the Wikidata ID for the article. This will not normally be used. local qid = frame.args.qid if qid and (#qid == 0) then qid = nil end -- The blacklist is passed in named parameter |suppressfields local blacklist = frame.args.suppressfields -- The whitelist is passed in named parameter |fetchwikidata local whitelist = frame.args.fetchwikidata -- The name of the field that this function is called from is passed in named parameter |name local fieldname = frame.args.name if blacklist then -- The name is compulsory when blacklist is used, so return nil if it is not supplied if not fieldname or (#fieldname == 0) then return nil end -- If this field is on the blacklist, then return nil if blacklist:find(fieldname) then return nil end end -- If we got this far then we're not on the blacklist -- If a non-blank input parameter was supplied return it	if input_parm then return input_parm end -- Otherwise see if this field is on the whitelist: if whitelist and (whitelist:find(fieldname) or whitelist == 'ALL') then local entity = mw.wikibase.getEntityObject(qid) local props if entity and entity.claims then props = entity.claims[propertyID] end if props then if props[1] and props[1].mainsnak.snaktype == "value" and props[1].mainsnak.datavalue.type == "wikibase-entityid" then -- if wiki-linked value, then output as link if possible local out = {} for k, v in pairs(props) do local sitelink = mw.wikibase.sitelink("Q" .. v.mainsnak.datavalue.value["numeric-id"]) local label = mw.wikibase.label("Q" .. v.mainsnak.datavalue.value["numeric-id"]) if label == nil then label = "Q" .. v.mainsnak.datavalue.value["numeric-id"] end if sitelink then out[#out + 1] = "" .. label .. "" else out[#out + 1] = "" .. label .. "[*] "					end end return table.concat(out, ", ") .. " "			else -- not a linkable article title, so just return formatted best value return entity:formatPropertyValues(propertyID).value end else -- no property stored for this article return nil end else -- not on the whitelist so just return what should be a nil input parameter return input_parm end end

-- This is used to get coordinates for display in infobox p.getCoords = function(frame) local propertyID = "P625" local input_parm = mw.text.trim(frame.args[1] or "") if input_parm and (#input_parm == 0) then input_parm = nil end local qid = frame.args.qid if qid and (#qid == 0) then qid = nil end local blacklist = frame.args.suppressfields local whitelist = frame.args.fetchwikidata -- The name of the field that this function is called from is passed in named parameter |name -- it's probably 'coords' but we can't be certain local fieldname = frame.args.name if blacklist then if not fieldname or (#fieldname == 0) then return nil end if blacklist:find(fieldname) then return nil end end if input_parm then return input_parm end if whitelist and (whitelist:find(fieldname) or whitelist == 'ALL') then local entity = mw.wikibase.getEntityObject(qid) local props if entity and entity.claims then props = entity.claims[propertyID] end if props then local lat_long = {} local coords = entity:formatPropertyValues(propertyID).value -- the latitude and longitude are returned like this: nn°nn&#39;nn.n&#34; -- using html entities with hex values really screws up parsing the numbers - thanks devs local lat = mw.ustring.match(coords, "^[^,]*") -- everything from the start to before the comma local long = mw.ustring.match(coords, "[^ ]*$") -- everything from after the space to the end lat = lat:gsub("&#%d%d;", ":")                 -- clean out the html entities long = long:gsub("&#%d%d;", ":")               -- clean out the html entities -- read the numbers into a table for num in mw.ustring.gmatch(lat, "%d+%.?%d*") do 				lat_long[#lat_long + 1] = num end lat_long[#lat_long + 1] = lat:sub(-1) for num in mw.ustring.gmatch(long, "%d+%.?%d*") do				lat_long[#lat_long + 1] = num end lat_long[#lat_long + 1] = long:sub(-1) -- invoke template Coord with the values stored in the table return frame:expandTemplate{title = 'coord', args = lat_long} else -- no coords in Wikidata for this article return nil end else -- not on the whitelist so just return what should be a nil input parameter return input_parm end end

return p