-- [[Module:Property]]
local p = {}
-- trim string
function trim(s)
-- incase nil
if s == nil then return '' end
s = tostring(s)
return s:gsub("^%s+", ""):gsub("%s+$", "")
end
-- Get the property of given wikidata entity.
-- 取得wikidata中指定實體項目的指定屬性。
-- [[:mw:Extension:Wikibase Client/Lua]]
function p.data(frame)
if mw.wikibase == nil then
-- translate: 'Not yet install Extension:Wikibase ?'
return '未安裝 Extension:Wikibase ?'
end
local entity = trim(frame.args[2])
if not entity:match('^[QP]%d{1,10}$') then
entity = mw.wikibase.resolvePropertyId(entity) or entity
end
-- entity = mw.wikibase.getEntity(trim(frame.args[2]) or nil)
if entity == '' then
entity = mw.wikibase.getEntity()
-- translate: No wikidata entity
if entity == nil or entity.claims == nil then return '無本頁之數據' end
else
entity = mw.wikibase.getEntity(entity)
if entity == nil then
-- translate: No wikidata entity
return '不存在此項目: ' .. frame.args[2]
end
end
local property_id = trim(frame.args[1])
if property_id == '' then
-- https://www.mediawiki.org/wiki/Extension:Wikibase_Client/Lua#mw.wikibase.label
local language = trim(frame.args[3])
if language == '' then
-- return mw.wikibase.label(entity.id)
return entity:getLabel()
end
return entity:getLabel(language)
end
if property_id == 'id' then
return entity.id
end
if property_id == 'link' then
local language = trim(frame.args[3])
if language == '' then language = 'en' end
return entity:getSitelink(language .. 'wiki')
end
if not property_id:match('^P%d{1,10}$') then
property_id = mw.wikibase.resolvePropertyId(property_id) or property_id
end
-- return entity:formatPropertyValues(property_id)
local property = entity.claims[property_id]
if property == nil then
local prefix
if trim(frame.args[2]) == '' then
-- translate: The page
prefix = '本頁'
else
-- translate: The entity
prefix = '此項目 [[d:' .. trim(frame.args[2]) .. ']] '
end
-- translate: has no property:
return prefix .. '不存在此屬性: ' .. property_id
end
-- TODO: check property[i]['rank']
property = property[1]['mainsnak']['datavalue']
-- ['datavalue']: e.g.,
-- {"value":{'entity-type':'item','numeric-id':1647152},type:'wikibase-entityid'}
-- {"value":{"amount":"+10","unit":"1","upperBound":"+10","lowerBound":"+10"},"type":"quantity"}
-- {"value":{"time":"-0800-01-01T00:00:00Z","timezone":0,"before":0,"after":0,"precision":7,"calendarmodel":"http://www.wikidata.org/entity/Q1985727"},"type":"time"}
property = property['value']
if type(property) ~= 'table' then
return property
end
if property['amount'] ~= nil then
return tonumber(property['amount'])
end
if property['time'] ~= nil then
-- local BCE, y, m, d = string.match(property['time'], '^([+\\-]?)0*([1-9]%d*)-0*([1-9]%d*)-0*([1-9]%d*)T')
-- local BCE, y, m, d = property['time']:match('^([+\\-]?)0*([1-9]%d*)-0*([1-9]%d*)-0*([1-9]%d*)T')
local BCE, y, m, d = property['time']:match('^([+\\-]?)(%d+)-(%d+)-0*(%d+)T')
local unit
if property['precision'] <= 7 then
if property['precision'] == 7 then
y = y / 100
unit = '世紀'
else
y = y / 1000
unit = '千紀'
end
else
y = y - 0
end
if BCE == '-' then
y = '前' .. y
end
if property['precision'] <= 7 then
return y .. unit
end
if property['precision'] <= 9 then
return y .. '年'
end
if property['precision'] <= 10 then
return y..'年'..m..'月'
end
-- TODO: other precisions 精度 https://en.wikipedia.org/wiki/Module:Wikidata
m = m - 0
d = d - 0
return y..'年'..m..'月'..d..'日'
end
if property['numeric-id'] ~= nil then
return mw.wikibase.label('Q' .. property['numeric-id'])
end
-- TODO: other types
-- https://www.mediawiki.org/wiki/Wikibase/API
-- https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Value_representation
-- translate: Can not parse the type: , please fix Module:property.
return '尚無法處理此屬性: ' .. property_id .. '，請修改 Module:property。'
end
return p
