Modul:Wikidata/Sorters/alpha

Dokumentace  

require 'Modul:No globals'

local p = {}

local lib = require 'Modul:Wikidata/lib'
local Collation = require 'Modul:Collation'
local Formatters = require 'Modul:Wikidata/Formatters'

local cache = {}
local function getLabel(value)
	if not cache[value] then
		cache[value] = mw.wikibase.label(value) or false
	end
	return cache[value] or nil
end

local function getValue(snak)
	local value = Formatters.getRawValue(snak)
	if snak.datavalue.type == 'wikibase-entityid' then
		return getLabel(value)
	end
	return value
end

function p.isCompleteSnak(snak)
	return lib.IsSnakValue(snak) and (
		snak.datavalue.type == 'string' or
		snak.datavalue.type == 'monolingualtext' or
		((getValue(snak) and true) or false)
	)
end

function p.isCompleteStatement(statement)
	return p.isCompleteSnak(statement.mainsnak)
end

function p.mayCompareSnak(snak)
	local valueType = lib.datatypeToValueType[snak.datatype]
	return valueType == 'monolingualtext' or valueType == 'string' or valueType == 'wikibase-entityid'
end

function p.mayCompareStatement(statement)
	return p.mayCompareSnak(statement.mainsnak)
end

function p.compareSnaks(first, second)
	return Collation.compare(getValue(first), getValue(second))
end

function p.compareStatements(first, second)
	return p.compareSnaks(first.mainsnak, second.mainsnak)
end

return p