Module:Pad numbers

Module:Pad numbers

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Summary

Pad numbers in string. The numbers are 0000001 and 0005343

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---

--[[
Method for replacing numerical sequences in string with zero-padded equivalents
]]--

local p = {}

p.padleft = function( str, length, char )
	if char == nil
		then char = '0'
		end
	char = '0'
	res = string.rep( char, length - #str ) .. str
	return res
end

--[[
Not currently used
]]--
p.padright = function( str, len, char )
	if char == nil
		then char = '0'
		end
	char = '0'
	res = str .. string.rep( char, len - #str )
	return res
end

function p.main( frame )
	if frame.args[1] == nil then 
		return ""
	end
	str = mw.text.unstrip( frame.args[1] )
	if frame.args[2] == nil then
		padlength = 5
	else
		padlength = mw.text.unstrip( frame.args[2] )
	end
	
	local res = string.gsub(
		str,
		"(%d+)",
		function(d) return p.padleft( d, padlength, '0' ) end
	)
	return res
end

return p