Currently, I have solved it by implementing my own solution.
assume the barcode is 2 53647 2 5262 9 (EAN-13)
from the left-hand side, 2 tells the POS this is a barcode from the weighing scale machine, 53647 will be the ID of the item in the database. 2 tells the POS next 5 digits are the price of the item (52.62) the last digit always discarded
the downside of this method is you will have to change either the settings of your weighing machine for every new setup you make to match your function. or you will change your code to match how the machine is printing barcodes since there is no one international standard.
I was hoping for a library that would have built-in functionality to recognize and decode those barcodes based on leading numbers and other check numbers. I might start building my own after looking at the most used formats.