60 lines
1.2 KiB
Dart
60 lines
1.2 KiB
Dart
import 'dart:convert';
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import 'dart:typed_data';
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import 'print.dart';
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extension StringExtension on String {
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bool get isUrl {
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return RegExp(r'^(http|https|ftp)://').hasMatch(this);
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}
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int compareToLower(String other) {
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return toLowerCase().compareTo(
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other.toLowerCase(),
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);
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}
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List<int> get encodeUtf16LeWithBom {
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final byteData = ByteData(length * 2);
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final bom = [0xFF, 0xFE];
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for (int i = 0; i < length; i++) {
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int charCode = codeUnitAt(i);
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byteData.setUint16(i * 2, charCode, Endian.little);
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}
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return bom + byteData.buffer.asUint8List();
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}
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Uint8List? get getBase64 {
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final regExp = RegExp(r'base64,(.*)');
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final match = regExp.firstMatch(this);
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final realValue = match?.group(1) ?? '';
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if (realValue.isEmpty) {
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return null;
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}
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try {
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return base64.decode(realValue);
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} catch (e) {
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return null;
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}
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}
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bool get isRegex {
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try {
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RegExp(this);
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return true;
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} catch (e) {
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commonPrint.log(e.toString());
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return false;
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}
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}
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}
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extension StringExtensionSafe on String? {
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String getSafeValue(String defaultValue) {
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if (this == null || this!.isEmpty) {
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return defaultValue;
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}
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return this!;
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}
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}
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