EchoZenith/PiliPlus
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tweak

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My-Responsitories
2026-06-23 14:59:25 +08:00
parent 955fdc17e2
commit 9660d74a80
4 changed files with 38 additions and 62 deletions
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19
lib/utils/id_utils.dart
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@@ -3,6 +3,7 @@
import 'dart:convert' show ascii, base64;
import 'package:PiliPlus/utils/utils.dart';
import 'package:flutter_sortable_wrap/sortable_utils.dart';
import 'package:uuid/v4.dart';
abstract final class IdUtils {
@@ -24,12 +25,6 @@ abstract final class IdUtils {
static final avRegexExact = RegExp(r'^av(\d+)$', caseSensitive: false);
static final digitOnlyRegExp = RegExp(r'^\d+$');
static void swap<T>(List<T> list, int idx1, int idx2) {
final idx1Value = list[idx1];
list[idx1] = list[idx2];
list[idx2] = idx1Value;
}
/// av转bv
static String av2bv(int aid) {
final bytes = ['B', 'V', '1', '0', '0', '0', '0', '0', '0', '0', '0', '0'];
@@ -40,18 +35,18 @@ abstract final class IdUtils {
tmp ~/= BASE;
}
swap(bytes, 3, 9);
swap(bytes, 4, 7);
bytes
..swap(3, 9)
..swap(4, 7);
return bytes.join();
}
/// bv转av
static int bv2av(String bvid) {
final bvidArr = bvid.codeUnits.sublist(3);
swap(bvidArr, 0, 6);
swap(bvidArr, 1, 4);
final bvidArr = bvid.codeUnits.sublist(3)
..swap(0, 6)
..swap(1, 4);
final tmp = bvidArr.fold(0, (pre, char) => pre * BASE + invData[char]!);
return (tmp & MASK_CODE) ^ XOR_CODE;