-- Created by Jef Roosens
--
-- Useful functions for receiving input from the user

local module = {}
module.logger = require("jlib.log").Logger:new{level = -1}


-- Read an integer
--
-- @param prompt prompt string to show
-- @param negative wether or not the number can be negative; defaults to false
function module.read_int(prompt, negative)
    while true do
        write(prompt)

        local num = tonumber(read())
        if num and num >= 0 or not negative then
            module.logger:info("Input: " .. num)
            return num
        end

        print("Please enter a valid number.")
    end
end


return module