-- This module implements {{in5}}.



local p = {}



function p.in5(frame)

    local indent = frame.args1

    -- Trim whitespace and convert to number. Default to 5 if not present,

    -- as per the template title.

    indent = tonumber( mw.text.trim(indent) ) or 5

    -- Round down to nearest integer. Decimal values produce funky results

    -- from the original template, but there's no need for us to replicate that.

    indent = math.floor( indent )

    -- Don't output anything for zero or less. Again, there was some funky output

    -- here for negatives, but now we're in Lua we should use sane defaults.

    if indent <= 0 then

        return

    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