addCharsUntilMultipleOfFour function

String addCharsUntilMultipleOfFour(
  1. String inputBase64
)

Add as much equals signs at the end of the string to have a length that is multiple of four

Implementation

String addCharsUntilMultipleOfFour(String inputBase64) {
  if (inputBase64.length % 4 == 0) return inputBase64;
  return addCharsUntilMultipleOfFour('$inputBase64=');
}