Module:TwitterSnowflake
Documentation for this module may be created at Module:TwitterSnowflake/doc
local p = {} local Date = require('Module:Date')._Date function p.snowflakeToDate(frame) local format = frame.args.format or "%B %e, %Y" local epoch = tonumber(frame.args.epoch) or 1288834974 local id_str = frame.args.id_str if type(id_str) ~= "string" then error("bad argument #1 (expected string, got " .. type(id_str) .. ")", 2) end if type(format) ~= "string" then error("bad argument #2 (expected string, got " .. type(format) .. ")", 2) end if type(epoch) ~= "number" then error("bad argument #3 (expected number, got " .. type(epoch) .. ")", 2) end local hi, lo = 0, 0 local hiexp = 1 for c in id_str:gmatch(".") do lo = lo * 10 + c if lo >= 2^32 then hi, lo = hi * 10^hiexp + math.floor(lo / 2^32), lo % 2^32 hiexp = 1 else hiexp = hiexp + 1 end end hi = hi * 10^(hiexp-1) local timestamp = math.floor((hi * 1024 + math.floor(lo / 4194304)) / 1000) + epoch return os.date(format, timestamp) end function p.getDate(frame) -- just pass frame directly to snowflakeToDate, this wraps it but the args are the same plus if (frame.args.id_str):match("%D") then -- not a number, so return -2 return -2 end frame.args.format = "%B %e, %Y" frame.args.epoch = tonumber(frame.args.epoch) or 1288834974 local epochdate = Date(os.date("%B %e, %Y", frame.args.epoch)) local twitterdate = Date(p.snowflakeToDate(frame)) if twitterdate == epochdate then -- created before epoch, so can't determine the date return -1 end local date = Date(frame.args.date) or 0 -- if we error here, then an input of no date causes an error, which is contrary to the entire way {{TwitterSnowflake/datecheck}} works return date - twitterdate end return p