ifJsonAble function
ifJsonAble returns the given string if it can be json encoded and decoded. Returns null otherwise.
Implementation
String? ifJsonAble(String? character) {
List<String> forbiddenChars = [
"\t",
"\u0000",
"\u{0000}",
];
if (forbiddenChars.contains(character)) {
return (null);
}
try {
String json = jsonEncode(
character,
);
return (jsonDecode(json) == character ? character : null);
} catch (e) {
return (null);
}
}