יחידה:AgeBetween

ניתן ליצור תיעוד על היחידה הזאת בדף יחידה:AgeBetween/תיעוד

local p = {}

-- Calculates exact age between two dates (YYYY-MM-DD)
function p.ageBetween(frame)
    local dob = frame.args[1]
    local event = frame.args[2]
    if not dob or not event then return "" end

    local y1, m1, d1 = dob:match("(%d+)%-(%d+)%-(%d+)")
    local y2, m2, d2 = event:match("(%d+)%-(%d+)%-(%d+)")
    if not (y1 and y2) then return "" end

    y1, m1, d1 = tonumber(y1), tonumber(m1), tonumber(d1)
    y2, m2, d2 = tonumber(y2), tonumber(m2), tonumber(d2)

    local years = y2 - y1
    local months = m2 - m1
    local days = d2 - d1

    if days < 0 then
        months = months - 1
        -- get days in previous month
        local prevMonth = m2 - 1
        local prevYear = y2
        if prevMonth == 0 then prevMonth = 12; prevYear = y2 - 1 end
        local daysInPrevMonth = os.date("*t", os.time{year=prevYear, month=prevMonth+1, day=0}).day
        days = days + daysInPrevMonth
    end

    if months < 0 then
        years = years - 1
        months = months + 12
    end

    return string.format("%d years, %d months, %d days", years, months, days)
end

return p