#!/usr/local/bin/lua51

local log = require("log")

local oargs = { }

-- This function assigns flags to their values while setting
-- remaining arguments to none
oargs.compile = function(array, rules)
	local ret = { }
	ret.none = { }

	for i = 1, #rules do
		ret[rules[i]] = nil
	end

	local i = 1

	while i < #array + 1 do
		for j = 1, #rules do
			if rules[j] == array[i] then
				local value = array[i + 1]

				if value == nil then
					log.error("missing argument for flag " .. rules[j])
				end

				ret[rules[j]] = value

				table.remove(array, i + 1)
				table.remove(array, i)
				i = i - 1
			end
		end

		i = i + 1
	end

	for i = 1, #array do
		table.insert(ret.none, array[i])
	end

	return ret
end

return oargs