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19 lines
424 B
Dart
19 lines
424 B
Dart
extension StringExt on String {
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(String, String?) splitOnce(Pattern p) {
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final pos = indexOf(p);
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if (pos == -1) {
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return (this, null);
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}
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final rest = substring(pos);
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var offset = 0;
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while (true) {
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final match = p.matchAsPrefix(rest, offset);
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if (match == null) {
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break;
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}
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offset = match.end;
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}
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return (substring(0, pos), rest.substring(offset));
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}
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}
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