12 lines
604 B
Dart
12 lines
604 B
Dart
extension ExtraString on String {
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static final _sentenceCaseStep1 = RegExp(r'([A-Z][a-z]|\[)');
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static final _sentenceCaseStep2 = RegExp(r'_([a-z])');
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static final _sentenceCaseStep3 = RegExp(r'([a-z])([A-Z])');
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String toSentenceCase() {
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var s = replaceFirstMapped(RegExp('.'), (m) => m.group(0)!.toUpperCase());
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s = s.replaceAllMapped(_sentenceCaseStep1, (m) => ' ${m.group(1)}');
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s = s.replaceAllMapped(_sentenceCaseStep2, (m) => m.group(0)!.toUpperCase()).replaceAll('_', ' ');
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return s.replaceAllMapped(_sentenceCaseStep3, (m) => '${m.group(1)} ${m.group(2)}').trim();
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}
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}
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