local export = {}
function export.get_number(text)
if text == '' or text == nil then return nil end
if type(text) == 'string' then
text = mw.ustring.gsub(text, ",", "")
end
local j = tonumber(text)
if j ~= nil then
return j
else
return nil
end
end
function export.is_number(frame)
return export.get_number(frame:getParent().args[1])
end
function export.is_hex_number(frame)
local args = frame:getParent().args
local hex = args[1]
if hex then
hex = mw.text.trim(hex)
if hex:find("^%x*$") then
if args.digits then
local digits = tonumber(args.digits)
if digits then
if #hex == digits then
return "1"
elseif #hex == 0 and args.allow_empty then
return "1"
else
return ""
end
else
error("Invalid number " .. digits)
end
else
return "1"
end
else
return ""
end
else
if args.allow_empty then
return "1"
else
return ""
end
end
end
return export
