Module:WikidataIB
Documentation for this module may be created at Module:WikidataIB/doc
-- Module to implement 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 available on Wikidata, but not on Wikipedia"
},
["months"] =
{
"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
},
["century"] = "century",
["BC"] = "BC",
["BCE"] = "BCE",
["ordinal"] =
{
[1] = "st",
[2] = "nd",
[3] = "rd",
["default"] = "th"
},
["filespace"] = "File",
["editonwikidata"] = "Edit this on Wikidata",
["latestdatequalifier"] = function (date) return "before " .. date end,
}
require("Module:i18n").loadI18n("Module:WikidataIB/i18n", i18n)
-------------------------------------------------------------------------------
-- Private functions
-------------------------------------------------------------------------------
--
-------------------------------------------------------------------------------
-- makeOrdinal needs to be internationalised along with the above:
-- takes cardinal numer as a numeric and returns the ordinal as a string
-- we need three exceptions in English for 1st, 2nd, 3rd, 21st, .. 31st, etc.
local function makeOrdinal (cardinal)
local ordsuffix = i18n.ordinal.default
if cardinal % 10 == 1 then
ordsuffix = i18n.ordinal[1]
elseif cardinal % 10 == 2 then
ordsuffix = i18n.ordinal[2]
elseif cardinal % 10 == 3 then
ordsuffix = i18n.ordinal[3]
end
-- In English, 1, 21, 31, etc. use 'st', but 11, 111, etc. use 'th'
-- similarly for 12 and 13, etc.
if (cardinal % 100 == 11) or (cardinal % 100 == 12) or (cardinal % 100 == 13) then
ordsuffix = i18n.ordinal.default
end
return tostring(cardinal) .. ordsuffix
end
-------------------------------------------------------------------------------
-- formatDate takes a datetime of the usual format from mw.wikibase.entity:formatPropertyValues
-- like "1 August 30 BCE" as parameter 1 and formats it according to the df (date format) and bc parameters
-- df = ["dmy" / "mdy" / "y"] default will be "dmy"
-- bc = ["BC" / "BCE"] default will be "BCE"
-- first the local version
local format_Date = function(datetime, dateformat, bc)
local datetime = datetime or "1 August 30 BCE" -- in case of nil value
-- chop off multiple vales and/or any hours, mins, etc.
-- keep anything before punctuation - we just want a single date:
local dateval = string.match( datetime, "[%w ]+")
local dateformat = string.lower(dateformat or "dmy") -- default to dmy
local bc = string.upper(bc or "") -- can't use nil for bc
-- we only want to accept two possibilities: BC or default to BCE
if bc == "BC" then
bc = " " .. i18n["BC"] -- prepend a non-breaking space.
else
bc = " " .. i18n["BCE"]
end
local postchrist = true -- start by assuming no BCE
local dateparts = {}
for word in string.gmatch(dateval, "%w+") do
if word == "BCE" or word == "BC" then -- **internationalise later**
postchrist = false
else
-- we'll keep the parts that are not 'BCE' in a table
dateparts[#dateparts + 1] = word
end
end
if postchrist then bc = "" end -- set AD dates to no suffix **internationalise later**
local sep = " " -- separator is nbsp
local fdate = table.concat(dateparts, " ") -- formatted date defaults to same order as input
-- if we have day month year, check dateformat
if #dateparts == 3 then
if dateformat == "y" then
fdate = dateparts[3]
elseif dateformat == "mdy" then
fdate = dateparts[2] .. sep .. dateparts[1] .. "," .. sep .. dateparts[3]
end
elseif #dateparts == 2 and dateformat == "y" then
fdate = dateparts[2]
end
return fdate .. bc
end
-------------------------------------------------------------------------------
-- parseParam takes a (string) parameter, e.g. from the list of frame arguments,
-- and makes "false", "no", and "0" into the (boolean) false
-- it makes the empty string and nil into the (boolean) value passed as default
-- allowing the parameter to be true or false by default.
local parseParam = function(param, default)
if param and param ~= "" then
param = param:lower()
if (param == "false") or (param == "no") or (param == "0") then
return false
else
return true
end
else
return default
end
end
-------------------------------------------------------------------------------
-- The label in a Wikidata item is subject to vulnerabilities
-- that an attacker might try to exploit.
-- It needs to be 'sanitised' by removing any wikitext before use.
-- If it doesn't exist, just return the id for the item
local labelOrId = function (id)
local label = mw.wikibase.label(id)
if label then
return mw.text.nowiki(label)
else
return id
end
end
-------------------------------------------------------------------------------
-- sourced takes a table representing a statement that may or may not have references
-- it counts how many references are sourced to something not contianing the word "wikipedia"
-- the reference string "ref" is available for debugging
-- it returns a boolean = true if there are any sourced references.
local sourced = function(claim)
local refs = 0
if claim.references then
for kr, vr in pairs(claim.references) do
local ref = mw.wikibase.renderSnaks(vr.snaks)
if not ref:find("Wikipedia") then refs = refs + 1 end
end
end
return refs > 0
end
-- parseInput processes the Q-id , the blacklist and the whitelist
-- if an input parameter is supplied, it returns that and ends the call.
-- it returns a boolean indicating whether or not the call should continue
-- and an object containing all of the Wikidata for the Qid supplied or the current page
local parseInput = function(frame, input_parm, property_id)
-- There may be a local parameter supplied, if it's blank, set it to nil
local input_parm = mw.text.trim(input_parm or "")
if input_parm == "" 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 because it's an expensive call.
local qid = frame.args.qid
if qid == "" 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 == "" then return false, nil, nil end
-- If this field is on the blacklist, then return nil
if blacklist:find(fieldname) then return false, nil, nil end
end
-- If we got this far then we're not on the blacklist
-- The blacklist overrides any locally supplied parameter as well
-- If a non-blank input parameter was supplied return it
if input_parm then return false, input_parm, nil end
-- Otherwise see if this field is on the whitelist:
if not (whitelist and (whitelist == 'ALL' or whitelist:find(fieldname))) then
-- not on the whitelist so just return what should be a nil input parameter
return false, input_parm, nil
end
-- See what's on Wikidata:
local entity = mw.wikibase.getEntityObject(qid)
if entity and entity.claims then
local props = entity.claims[property_id]
if props and props[1] then
return true, entity, props
end
end
-- no property on Wikidata
return false, input_parm, nil
end
local function _getvalue(frame, entity, props, filter, propertyID)
-- onlysourced is a boolean passed to return only values sourced to other than Wikipedia
-- if nothing or an empty string is passed set it true
-- if "false" or "no" or "0" is passed set it false
local onlysrc = parseParam(frame.args.onlysourced, true)
-- noicon is a boolean passed to suppress the trailing "edit at Wikidata" icon
-- for use when the value is processed further by the infobox
-- if nothing or an empty string is passed set it false
-- if "false" or "no" or "0" is passed set it false
local noic = parseParam(frame.args.noicon, false)
-- wdlinks is a boolean passed to enable links to Wikidata when no article exists
-- if nothing or an empty string is passed set it false
-- if "false" or "no" or "0" is passed set it false
local wdl = parseParam(frame.args.wdlinks, false)
-- sorted is a boolean passed to enable sorting of the values returned
-- if nothing or an empty string is passed set it false
-- if "false" or "no" or "0" is passed set it false
local sorted = parseParam(frame.args.sorted, false)
-- separator is a string that is used to separate multiple returned values
-- if nothing or an empty string is passed set it to the default
-- any double-quotes " are stripped out, so that spaces may be passed
-- e.g. |sep=" - "
local sepdefault = ", " -- **internationalise later**
local separator = frame.args.sep or ""
separator = string.gsub(separator, '"', '')
if #separator == 0 then
separator = sepdefault
end
-- list is the name of a template that a list of multiple values is passed through
local list = frame.args.list or ""
-- prefix is a string that may be nil, empty (""), or a string of characters
-- this is prefixed to each value
-- useful when when multiple values are returned
-- any double-quotes " are stripped out, so that spaces may be passed
local prefix = frame.args.prefix or ""
prefix = string.gsub(prefix, '"', '')
-- postfix is a string that may be nil, empty (""), or a string of characters
-- this is postfixed to each value
-- useful when when multiple values are returned
-- any double-quotes " are stripped out, so that spaces may be passed
local postfix = frame.args.postfix or ""
postfix = string.gsub(postfix, '"', '')
-- linkprefix is a string that may be nil, empty (""), or a string of characters
-- this creates a link and is then prefixed to each value
-- useful when when multiple values are returned and indirect links are needed
-- any double-quotes " are stripped out, so that spaces may be passed
local lprefix = frame.args.linkprefix or ""
lprefix = string.gsub(lprefix, '"', '')
-- linkpostfix is a string that may be nil, empty (""), or a string of characters
-- this is postfixed to each value when linking is enabled with lprefix
-- useful when when multiple values are returned
-- any double-quotes " are stripped out, so that spaces may be passed
local lpostfix = frame.args.linkpostfix or ""
lpostfix = string.gsub(lpostfix, '"', '')
-- maxvals is a string that may be nil, empty (""), or a number
-- this determines how many items may be returned when multiple values are available
-- the behaviour is customisable for each different data type
local maxvals = tonumber(frame.args.maxvals) or 0
-- So now we have something to return: deal with:
-- (1) ["datatype"] = "wikibase-item";
-- (2) ["datatype"] = "time";
-- (3) ["datatype"] = "commonsMedia",
-- ["datatype"] = "external-id",
-- ["datatype"] = "string",
-- ["datatype"] = "url"
-- (4) ["datatype"] = "globe-coordinate", or anything else
local lang = mw.language.getContentLanguage().code
local thisQid = entity.id
-- table 'out' is going to to store the return value(s):
local out = {}
local icon = " [[" .. i18n["filespace"] .. ":Blue pencil.svg |frameless |text-top |10px |alt=" .. i18n["editonwikidata"] .. "|link=https://www.wikidata.org/wiki/" .. thisQid .. "?uselang=" .. lang .. "#" .. propertyID .. "|" .. i18n["editonwikidata"] .. "]]"
local datatype = props[1].mainsnak.datatype
for k, v in pairs(props) do
local datavalue = v.mainsnak.datavalue
datavalue = datavalue and datavalue.value
if (not filter(v)) or (onlysrc and not sourced(v)) then
-- do nothing; either isn't preferred when prefered values are requested, or isn't sourced when onlysourced=true
elseif v.mainsnak.snaktype == "somevalue" then -- check for value is unknown
out[#out + 1] = "Unknown"
elseif v.mainsnak.snaktype == "novalue" then -- check for value is none
-- out[#out + 1] = "No value" -- don't return a value for this
-- data type is a wikibase item:
elseif datatype == "wikibase-item" then
-- it's wiki-linked value, so output as link if possible
local qnumber = "Q" .. datavalue["numeric-id"]
local sitelink = mw.wikibase.sitelink(qnumber)
local label = labelOrId(qnumber)
if sitelink then
out[#out + 1] = "[[" .. lprefix .. sitelink .. lpostfix .. "|" .. label .. "]]"
else
-- no sitelink, so check first for a redirect with that label
local artitle = mw.title.new(label, 0)
if artitle.id > 0 then
if artitle.isRedirect then
-- no sitelink, but there's a redirect with the same title as the label
-- let's link to that
out[#out + 1] = "[[".. lprefix .. label .. lpostfix .. "|" .. label .. "]]"
else
-- no sitelink and not a redirect but an article exists with the same title as the label
-- that's probably a dab page, so output the plain label
out[#out + 1] = label
end
else
-- no article or redirect with the same title as the label
if wdl then
-- show that there's a Wikidata entry available
out[#out + 1] = "[[:d:Q" .. datavalue["numeric-id"] .. "|" .. label .. "]] <span title='" .. i18n["errors"]["local-article-not-found"] .. "'>[[File:Wikidata-logo.svg|16px|alt=|link=]]</span>"
else
-- no wikidata links required, so just give the plain label
out[#out + 1] = label
end
end
end
-- If the property has a qualifier of latest date, add that in all cases:
if v.qualifiers then
local quals = v.qualifiers["P1326"] -- latest date qualifier
if quals then
out[#out] = out[#out] .. " (" .. i18n.latestdatequalifier(mw.wikibase.renderSnaks(quals)) .. ")"
end
end
-- data type is time:
elseif datatype == "time" then
-- it's a date value, so output according to formatting preferences
local timestamp = datavalue.time
-- A year can be stored like this: "+1872-00-00T00:00:00Z",
-- which is processed here as if it were the day before "+1872-01-01T00:00:00Z",
-- and that's the last day of 1871, so the year is wrong.
-- So fix the month 0, day 0 timestamp to become 1 January instead:
timestamp = timestamp:gsub("%-00%-00T", "-01-01T")
local dateprecision = datavalue.precision
local fpvdate = tonumber(timestamp:sub(2, 5))
local fdate
if dateprecision >= 9 then -- 9 is year precision
local dateformat = "y"
if dateprecision >= 10 then -- prepend month
fpvdate = i18n.months[tonumber(timestamp:sub(7, 8))] .. " " .. fpvdate
dateformat = frame.args.df
if dateprecision >= 11 then -- prepend day
fpvdate = tonumber(timestamp:sub(10, 11)) .. " " .. fpvdate
end
if timestamp:sub(1, 1) == "-" then
fpvdate = fpvdate .. " BCE"
end
end
fdate = format_Date(fpvdate, dateformat, frame.args.bc)
elseif dateprecision == 7 then -- century
local century = math.floor((fpvdate - 1) / 100) + 1
fdate = makeOrdinal(century) .. " " .. i18n["century"]
if timestamp:sub(1, 1) == "-" then -- date is BC
local bc = string.upper(frame.args.bc or "") -- can't use nil for bc
-- we only want to accept two possibilities: BC or default to BCE
if bc == "BC" then
fdate = fdate .. " " .. i18n["BC"] -- use non-breaking space.
else
fdate = fdate .. " " .. i18n["BCE"]
end
end
else
-- date precisions 0 to 6 (billion years to millenium) TODO:
--
end
out[#out+1] = fdate
-- data types which are strings:
elseif datatype == "commonsMedia" or datatype == "external-id" or datatype == "string" or datatype == "url" then
-- commonsMedia or external-id or string or url
-- all have mainsnak.datavalue.value as string
if lprefix ~= "" then
out[#out+1] = "[[" .. lprefix .. datavalue .. lpostfix .. "|" .. prefix .. datavalue .. postfix .. "]]"
else
out[#out+1] = prefix .. datavalue .. postfix
end -- check for link requested
-- data types which are quantities:
elseif datatype == "quantity" then
-- quantities have mainsnak.datavalue.value.amount and mainsnak.datavalue.value.unit
-- the unit is of the form http://www.wikidata.org/entity/Q829073
-- convert amount to a number
local amt
local amount = tonumber(datavalue.amount) or "Not a number"
-- check if upper and/or lower bounds are given and construct a string if so
local upb = tonumber(datavalue.upperBound)
if upb then
amt = amount .. " +" .. (upb - amount)
end
local lowb = tonumber(datavalue.lowerBound)
if lowb then
amt = (amt or amount) .. " -" .. (amount - lowb)
end
-- check if bounds are symmetrical and re-write string if so
if upb and lowb and ((upb - amount) == (amount - lowb)) then
amt = amount .. " ±" .. (amount - lowb)
end
-- extract the qid in the form 'Qnnn' from the value.unit url and then fetch the label from that
local unit = ""
local unitqid = string.match( datavalue.unit, "(Q%d+)" )
if unitqid then
unit = mw.wikibase.label( unitqid )
if unit then unit = " " .. unit end
end
out[#out+1] = (amt or amount) .. unit
else
-- some other data type
-- e.g. globe-coordinate where mainsnak.datavalue.value is a table
-- either write a specific handler
-- or we can use formatPropertyValues() as a temporary measure. This won't work with multiple valid values.
out[#out+1] = entity:formatPropertyValues(propertyID).value
break
end -- of datatype/unknown value/sourced check
if maxvals > 0 and #out >= maxvals then break end
end -- of for each value loop
-- if there's anything to return, then return a list
-- comma-separated by default, but may be specified by the sep parameter
-- optionally specify a hlist or ubl
if #out > 0 then
if sorted then table.sort(out) end
-- if there's a pen icon add it the end of the last value
if not noic then
out[#out] = out[#out] .. icon
end
if list == "" then
return table.concat(out, separator)
else
return frame:expandTemplate{title = list, args = out}
end
else
return nil -- no items had valid reference
end
end
-------------------------------------------------------------------------------
-- Public functions
-------------------------------------------------------------------------------
--
-- getValue 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 "")
local success, errorOrEntity, props = parseInput(frame, frame.args[2], propertyID)
if not success then
return errorOrEntity
end
local function filter(claim)
return true
end
return _getvalue(frame, errorOrEntity, props, filter, propertyID)
end
-------------------------------------------------------------------------------
-- getPreferredValue is used to get a value, or a comma separated list of them if multiple values exist
-- If preferred ranks are set, it will return those values, otherwise values with normal ranks
--
p.getPreferredValue = function(frame)
local propertyID = mw.text.trim(frame.args[1] or "")
local success, errorOrEntity, props = parseInput(frame, frame.args[2], propertyID)
if not success then
return errorOrEntity
end
local prefflag = false
for k, v in pairs(props) do
if v.rank == "preferred" then
prefflag = true
break
end
end
local function filter(claim)
return claim.rank == "preferred" or prefflag == false
end
return _getvalue(frame, errorOrEntity, props, filter, propertyID)
end
-------------------------------------------------------------------------------
-- getSourcedValue is used to get a value, or a comma separated list of them if multiple values exist
-- but only values that are sourced are returned
-- redundant to getValue with onlysourced=true but kept for backwards compatibility
-- now defined via getValue
--
p.getSourcedValue = function(frame)
frame.args.onlysourced = "yes"
return p.getValue(frame)
end
-------------------------------------------------------------------------------
-- getCoords is used to get coordinates for display in an infobox
-- whitelist and blacklist are implemented
-- optional 'display' parameter is allowed, defaults to "inline, title"
--
p.getCoords = function(frame)
local propertyID = "P625"
-- if there is a 'display' parameter supplied, use it
-- otherwise default to "inline, title"
local disp = frame.args.display
if not disp or disp == "" then
disp = "inline, title"
end
local success, errorOrEntity = parseInput(frame, frame.args[1], propertyID)
if not success then
return errorOrEntity
else
local entity = errorOrEntity
local lat_long = {}
local coords = entity:formatPropertyValues(propertyID).value
-- the latitude and longitude are returned like this: nn°nn'nn.n"
-- 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 latitude numbers into a table
for num in mw.ustring.gmatch(lat, "%d+%.?%d*") do
lat_long[#lat_long + 1] = num
end
-- add the N/S
lat_long[#lat_long + 1] = lat:sub(-1)
-- read the longitude numbers into a table
for num in mw.ustring.gmatch(long, "%d+%.?%d*") do
lat_long[#lat_long + 1] = num
end
-- add E/W for long
lat_long[#lat_long + 1] = long:sub(-1)
-- add named parameter for display
lat_long["display"] = disp
-- invoke template Coord with the values stored in the table
return frame:expandTemplate{title = 'coord', args = lat_long}
end
end
-------------------------------------------------------------------------------
-- getQualifierValue is used to get a formatted value of a qualifier
--
-- The call needs: a property (the unnamed parameter or 1=)
-- a target value for that property (pval=)
-- a qualifier for that target value (qual=)
-- The usual whitelisting and blacklisting of the property is implemented
-- The boolean onlysourced= parameter can be set to return nothing
-- when the property is unsourced (or only sourced to Wikipedia)
--
p.getQualifierValue = function(frame)
local propertyID = mw.text.trim(frame.args[1] or "")
-- The PropertyID of the target value of the property
-- whose qualifier is to be returned is passed in named parameter |pval=
local propvalue = frame.args.pval
-- The PropertyID of the qualifier
-- whose value is to be returned is passed in named parameter |qual=
local qualifierID = frame.args.qual
-- onlysourced is a boolean passed to return qualifiers
-- only when property values are sourced to something other than Wikipedia
-- if nothing or an empty string is passed set it false
-- if "false" or "no" or 0 is passed set it false
local onlysrc = parseParam(frame.args.onlysourced, false)
local success, errorOrEntity, props = parseInput(frame, frame.args[2], propertyID)
if not success then
return errorOrEntity
else
local entity = errorOrEntity
-- Scan through the values of the property
-- we want something like property is P793, significant event (in propertyID)
-- whose value is something like Q385378, construction (in propvalue)
-- then we can return the value(s) of a qualifier such as P580, start time (in qualifierID)
for k1, v1 in pairs(props) do
if v1.mainsnak.snaktype == "value" and v1.mainsnak.datavalue.type == "wikibase-entityid" then
-- It's a wiki-linked value, so check if it's the target (in propvalue)
-- and if it has qualifiers
if v1.mainsnak.datavalue.value.id == propvalue and v1.qualifiers then
if (onlysrc == true) and not sourced(v1) then
return
end
-- if we've got this far, we have a (sourced) claim with qualifiers
-- which matches the target, so find the value(s) of the qualifier we want
local quals = v1.qualifiers[qualifierID]
local out = {}
if quals then
if quals[1].datatype == "wikibase-item" then
for k2, v2 in pairs(quals) do
local valueID = v2.datavalue.value.id
local sitelink = mw.wikibase.sitelink(valueID)
local label = labelOrId(valueID)
if sitelink then
out[#out + 1] = "[[" .. sitelink .. "|" .. label .. "]]"
else
out[#out + 1] = "[[:d:" .. valueID .. "|" .. label .. "]] <span title='" .. i18n["errors"]["local-article-not-found"] .. "'>[[File:Wikidata-logo.svg|16px|alt=|link=]]</span>"
end
end
return table.concat(out, ", ")
else
return mw.wikibase.renderSnaks(quals)
end
end
end
end -- of loop through values of propertyID
end
end
return nil
end
-------------------------------------------------------------------------------
-- getLink returns the label for a Qid wiki-linked to the local article (if the article exists)
-- if label doesn't exist, it returns the Qid wiki-linked to the local article (if the article exists)
--
p.getLink = function(frame)
local itemID = mw.text.trim(frame.args[1] or "")
if itemID == "" then return end
local sitelink = mw.wikibase.sitelink(itemID)
local label = labelOrId(itemID)
if sitelink then
return "[[" .. sitelink .. "|" .. label .. "]]"
else
return label
end
end
-------------------------------------------------------------------------------
-- getLabel returns the label for a Qid
-- if label doesn't exist, it returns the Qid
--
p.getLabel = function(frame)
local itemID = mw.text.trim(frame.args[1] or frame.args.qid or "")
if itemID == "" then return end
return labelOrId(itemID)
end
-------------------------------------------------------------------------------
-- getAT returns the article title for a Qid
-- or nothing if it doesn't exist
--
p.getAT = function(frame)
local itemID = mw.text.trim(frame.args[1] or frame.args.qid or "")
if itemID == "" then return end
return mw.wikibase.sitelink(itemID)
end
-------------------------------------------------------------------------------
-- getDescription returns the article description for a Qid
-- Qid defaults to the current article if omitted
-- Any local parameter supplied (other than "Wikidata") becomes the return value
-- Nothing is returned if the description doesn't exist or 'none' is passed locally
--
p.getDescription = function(frame)
local desc = mw.text.trim(frame.args[1] or "")
local itemID = mw.text.trim(frame.args.qid or "")
if itemID == "" then itemID = nil end
if desc:lower() == 'wikidata' then
return mw.wikibase.description(itemID)
elseif desc:lower() == 'none' then
return nil
else
return desc
end
end
-------------------------------------------------------------------------------
-- formatDate is a wrapper to export the private function format_Date
--
p.formatDate = function(frame)
return format_Date(frame.args[1], frame.args.df, frame.args.bc)
end
-------------------------------------------------------------------------------
-- checkBlacklist allows a test to check whether a named field is suppressed
-- {{#if:{{#invoke:WikidataIB |checkBlacklist |name=Joe |suppressfields=Dave; Joe; Fred}} | not blacklisted | blacklisted}}
-- displays "blacklisted"
-- {{#if:{{#invoke:WikidataIB |checkBlacklist |name=Jim |suppressfields=Dave; Joe; Fred}} | not blacklisted | blacklisted}}
-- displays "not blacklisted"
--
p.checkBlacklist = function(frame)
local blacklist = frame.args.suppressfields
local fieldname = frame.args.name
if blacklist and fieldname then
if blacklist:find(fieldname) then return nil end
return true
end
end
-------------------------------------------------------------------------------
-- emptyor returns nil if its first unnamed argument is just punctuation, whitespace or html tags
-- otherwise it returns the argument unchanged (including leading/trailing space)
-- unless the argument may contain "=" when it must be called explicitly:
-- |1=arg
-- (when leading/trailing spaces are trimmed)
p.emptyor = function(frame)
local s = frame.args[1]
if not s or s == "" then return nil end
local sx = s:gsub("%s", ""):gsub("<[^>]*>", ""):gsub("%p", "")
if sx == "" then
return nil
else
return s
end
end
return p