isValidFATFilename function

bool isValidFATFilename(
  1. String filename
)

Checks if the filename is a valid FAT filename.

This includes checking for illegal characters and length.

Implementation

bool isValidFATFilename(String filename) {
  return isLegalLength(filename) && !containsIllegalFATCharacters(filename) && !containsNullCharacter(filename) && !isRelativePath(filename);
}