44 lines
963 B
Dart
44 lines
963 B
Dart
import '../reverse_engineering/cipher/cipher_operations.dart';
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/// Utility for Strings.
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extension StringUtility on String {
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/// Returns true if the string is null or empty.
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bool get isNullOrWhiteSpace {
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if (this == null) {
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return true;
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}
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if (trim().isEmpty) {
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return true;
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}
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return false;
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}
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static final _exp = RegExp(r'\D');
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/// Strips out all non digit characters.
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String get stripNonDigits => replaceAll(_exp, '');
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}
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/// List decipher utility.
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extension ListDecipher on List<CipherOperation> {
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/// Apply every CipherOperation on the [signature]
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String decipher(String signature) {
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for (var operation in this) {
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signature = operation.decipher(signature);
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}
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return signature;
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}
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}
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/// List Utility.
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extension ListFirst<E> on List<E> {
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/// Returns the first element of a list or null if empty.
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E get firstOrNull {
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if (length == 0) {
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return null;
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}
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return first;
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}
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}
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