Module:GetYear

Documentation for this module may be created at Module:GetYear/doc

local p = {}

function p.fromDate(frame)
    local date = frame.args[1] or ""
    
    -- Clean up commas and trim spaces
    date = mw.text.trim(date):gsub(",", "")
    
    -- Extract a 4-digit year
    local year = tonumber(date:match("(%d%d%d%d)"))
    
    if year then
        -- Calculate the decade
        local decade = math.floor(year / 10) * 10
        -- Return both the year and the decade categories
        return string.format('[[Category:%d]] [[Category:%ss]]', year, decade)
    else
        return '[[Category:Pages with unknown date formats]]'
    end
end

return p