Lua how convert timestamp to "date" type

[silveralol]

hello folks, I'm trying to convert a timestamp to show in the item description...
actual behavior with this script
local test = thing:getAttribute(ITEM_ATTRIBUTE_DATE)
description = description .. thing:getDescription(distance) .. '\n' ..tostring(test) .. '.'

this attr I get from the PR of the reward chest system from socket

when I look at reward container appears:
You see a reward container (Vol:32).
This container contains your rewards earned in battles.
1494644666.
I want to convert the red number to something like that
13 may 2017.
its is possible?

 

[StreamSide]

local test = thing:getAttribute(ITEM_ATTRIBUTE_DATE)
print(os.date('%d-%b-%Y', test))

can you test it?
edited:my bad

 

[Shyzoul]

i've had made a function back in days, just translated from my personal c lib.

local function get_date_from_unix(unix_time)
    local day_count, year, days, month = function(yr) return (yr % 4 == 0 and (yr % 100 ~= 0 or yr % 400 == 0)) and 366 or 365 end, 1970, math.ceil(unix_time/86400)

    while days >= day_count(year) do
        days = days - day_count(year) year = year + 1
    end
    local tab_overflow = function(seed, table) for i = 1, #table do if seed - table[i] <= 0 then return i, seed end seed = seed - table[i] end end
    month, days = tab_overflow(days, {31,(day_count(year) == 366 and 29 or 28),31,30,31,30,31,31,30,31,30,31})
    local hours, minutes, seconds = math.floor(unix_time / 3600 % 24), math.floor(unix_time / 60 % 60), math.floor(unix_time % 60)
    local period = hours > 12 and "pm" or "am"
    hours = hours > 12 and hours - 12 or hours == 0 and 12 or hours
    return string.format("%d/%d/%04d %02d:%02d:%02d %s", days, month, year, hours, minutes, seconds, period)
end

usage:
print(get_date_from_unix(1494652614))
let me know if it's working.
a todo that i never did in this function was mend daylight saving times inside of it, if you're using it, you should do it yourself before calling it.

 

[Raggaer]

If you want to get it as table:

local d = os.date("*t", UNIX_TIMESTAMP)

This produces the following table

{year = x, month = x, day = x, yday = x, wday = x,
     hour = x, min = x, sec = x, isdst = false}

As a string, do what @StreamSide says

 

[silveralol]

Thank you @StreamSide and @Raggaer, the first answer solve my problem ... thank you very much!!!