Module:In5

Documentation for this module may be created at Module:In5/doc

-- This module implements {{in5}}.

local p = {}

function p.in5(frame)
    local indent = frame.args[1] or 5 -- Default to 5.
    indent = tonumber( mw.text.trim(indent) ) -- Trim whitespace and convert to number.
    if not indent or indent <= 0 or math.floor(indent) ~= indent then
        return -- Return blank for zero or bad input.
    end
    
    local base = '&nbsp; '
    local modulo = '&nbsp;'
 
--[[
    Indent values and the corresponding values for base and modulo:

    indent  base    modulo
    1       0       1
    2       0       2
    3       1       1
    4       1       2
    5       2       1
    6       2       2
    7       3       1
    8       3       2
    9       4       1
    10      4       2
]]
    
    local baseNum = math.floor( (indent - 1) / 2 )
    local modNum = math.fmod( indent - 1 , 2 ) + 1
    
    return mw.ustring.rep( base, baseNum) .. mw.ustring.rep( modulo, modNum )
end

return p