⚡ Bolt: [performance improvement] Cache dynamic RegExp patterns to static constants

lib/services/api/nexusphp_adapter.dart

@@ -12,6 +12,9 @@ import 'nexusphp_helper.dart';
 /// NexusPHP 站点适配器
 /// 实现 NexusPHP (1.9+) 站点的 API 调用
 class NexusPHPAdapter with NexusPHPHelper implements SiteAdapter {
+  // ⚡ Bolt: Cache RegExp to avoid recompiling on every match during loops
+  static final RegExp _invisibleCharsRegExp = RegExp(r'[\s\u200B-\u200D\uFEFF]');
+
   late SiteConfig _siteConfig;
   late Dio _dio;
   Map<String, String>? _discountMapping;
@@ -536,13 +539,13 @@ class NexusPHPAdapter with NexusPHPHelper implements SiteAdapter {
           for (final section in sectionsData) {
             final sectionName = section['name'] as String;
             final sectionDisplayName = (section['display_name'] as String)
-                .replaceAll(RegExp(r'[\s\u200B-\u200D\uFEFF]'), '');
+                .replaceAll(_invisibleCharsRegExp, '');
             final categoriesData = section['categories'] as List;
 
             for (final category in categoriesData) {
               final categoryId = category['id'];
               final categoryName = (category['name'] as String).replaceAll(
-                RegExp(r'[\s\u200B-\u200D\uFEFF]'),
+                _invisibleCharsRegExp,
                 '',
               );
               categories.add(

lib/services/api/nexusphp_web_adapter.dart

@@ -55,7 +55,15 @@ class ParsedTorrentResult {
 }
 
 /// Helper class for Isolate usage
-class _AdapterHelper with BaseWebAdapterMixin {}
+class _AdapterHelper with BaseWebAdapterMixin {
+  // ⚡ Bolt: Cache RegExp to avoid recompiling on every match during loops
+  static final RegExp sizeRegExp = RegExp(r'([\d.]+)\s*(\w+)');
+  // ⚡ Bolt: Cache RegExp to avoid recompiling for every torrent list item
+  static final RegExp relativeUrlRegExp = RegExp(
+    r'(src|href)="((?!https?://|//|data:|javascript:|#)[^"]+)"',
+    caseSensitive: false,
+  );
+}
 
 /// Isolate entry point for parsing search results
 Future<ParsedTorrentResult> _parseSearchResponseInIsolate(
@@ -1147,7 +1155,7 @@ class NexusPHPWebAdapter extends SiteAdapter
           // 解析文件大小为字节数
           int sizeInBytes = 0;
           if (sizeText.isNotEmpty) {
-            final sizeMatch = RegExp(r'([\d.]+)\s*(\w+)').firstMatch(sizeText);
+            final sizeMatch = _AdapterHelper.sizeRegExp.firstMatch(sizeText);
             if (sizeMatch != null) {
               final sizeValue = double.tryParse(sizeMatch.group(1) ?? '0') ?? 0;
               final unit = sizeMatch.group(2)?.toUpperCase() ?? 'B';
@@ -1303,10 +1311,7 @@ class NexusPHPWebAdapter extends SiteAdapter
           } else {
             // HTML 模式：处理相对URL
             extractedContent = extractedContent.replaceAllMapped(
-              RegExp(
-                r'(src|href)="((?!https?://|//|data:|javascript:|#)[^"]+)"',
-                caseSensitive: false,
-              ),
+              _AdapterHelper.relativeUrlRegExp,
               (match) {
                 final attr = match.group(1);
                 final path = match.group(2)!;

lib/services/app_update_downloader.dart

@@ -25,6 +25,9 @@ class AppUpdateProgress {
 }
 
 class AppUpdateDownloader {
+  // ⚡ Bolt: Cache RegExp to avoid recompiling on every call
+  static final RegExp _invalidCharsRegExp = RegExp(r'[^0-9A-Za-z._-]');
+
   AppUpdateDownloader._();
 
   static final AppUpdateDownloader instance = AppUpdateDownloader._();
@@ -204,7 +207,7 @@ class AppUpdateDownloader {
     final completer = Completer<void>();
 
     final filenameVersion = (version ?? 'latest').replaceAll(
-      RegExp(r'[^0-9A-Za-z._-]'),
+      _invalidCharsRegExp,
       '_',
     );
     final destinationFilename = 'pt_mate-$filenameVersion-arm64-v8a.apk';

lib/services/downloader/qbittorrent_client.dart

@@ -15,6 +15,10 @@ import 'torrent_file_downloader_mixin.dart';
 class QbittorrentClient
     with TorrentFileDownloaderMixin
     implements DownloaderClient {
+  // ⚡ Bolt: Cache RegExp to avoid recompiling on every call
+  static final RegExp _httpProtocolRegExp = RegExp(r'https?://');
+  static final RegExp _sidRegExp = RegExp(r'SID=([^;]+)');
+
   final QbittorrentConfig config;
   final String password;
 
@@ -65,7 +69,7 @@ class QbittorrentClient
   String _buildBase(QbittorrentConfig c) {
     var urlStr = c.host.trim();
     // 补全协议
-    if (!urlStr.startsWith(RegExp(r'https?://'))) {
+    if (!urlStr.startsWith(_httpProtocolRegExp)) {
       urlStr = 'http://$urlStr';
     }
 
@@ -223,7 +227,7 @@ class QbittorrentClient
         // 从响应头中提取会话ID
         final cookies = response.headers['set-cookie'];
         if (cookies != null && cookies.isNotEmpty) {
-          final sidMatch = RegExp(r'SID=([^;]+)').firstMatch(cookies.first);
+          final sidMatch = _sidRegExp.firstMatch(cookies.first);
           if (sidMatch != null) {
             _sessionId = sidMatch.group(1);
             return;

lib/services/downloader/rutorrent_client.dart

@@ -16,6 +16,9 @@ import 'torrent_file_downloader_mixin.dart';
 class RuTorrentClient
     with TorrentFileDownloaderMixin
     implements DownloaderClient {
+  // ⚡ Bolt: Cache RegExp to avoid recompiling on every call
+  static final RegExp _httpProtocolRegExp = RegExp(r'https?://');
+
   final RuTorrentConfig config;
   final String password;
 
@@ -66,7 +69,7 @@ class RuTorrentClient
   String _buildBase(RuTorrentConfig c) {
     var urlStr = c.host.trim();
     // 补全协议
-    if (!urlStr.startsWith(RegExp(r'https?://'))) {
+    if (!urlStr.startsWith(_httpProtocolRegExp)) {
       urlStr = 'http://$urlStr';
     }
 

lib/services/downloader/transmission_client.dart

@@ -14,6 +14,9 @@ import 'torrent_file_downloader_mixin.dart';
 class TransmissionClient
     with TorrentFileDownloaderMixin
     implements DownloaderClient {
+  // ⚡ Bolt: Cache RegExp to avoid recompiling on every call
+  static final RegExp _httpProtocolRegExp = RegExp(r'https?://');
+
   final TransmissionConfig config;
   final String password;
 
@@ -52,7 +55,7 @@ class TransmissionClient
   String _buildBase(TransmissionConfig c) {
     var urlStr = c.host.trim();
     // 补全协议
-    if (!urlStr.startsWith(RegExp(r'https?://'))) {
+    if (!urlStr.startsWith(_httpProtocolRegExp)) {
       urlStr = 'http://$urlStr';
     }
 

lib/utils/format.dart

@@ -69,6 +69,8 @@ class FormatUtil {
 
 class Formatters {
   static final NumberFormat _num2 = NumberFormat('#,##0.00');
+  // ⚡ Bolt: Cache RegExp to avoid recompiling on every call
+  static final RegExp _timezoneRegExp = RegExp(r'Z|[+-]\d{2}:?\d{2}$');
 
   // 输入单位为 B（字节），格式化为 GB 或 TB（保留两位小数）
   static String dataFromBytes(num bytes) {
@@ -193,7 +195,7 @@ class Formatters {
           normalizedDate = normalizedDate.replaceRange(10, 11, 'T');
         }
 
-        if (normalizedDate.contains(RegExp(r'Z|[+-]\d{2}:?\d{2}$'))) {
+        if (normalizedDate.contains(_timezoneRegExp)) {
           return DateTime.parse(normalizedDate).toLocal();
         } else {
           return DateTime.parse("$normalizedDate$actualZone").toLocal();

pubspec.lock

@@ -69,10 +69,10 @@ packages:
     dependency: transitive
     description:
       name: characters
-      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
       url: "https://pub.dev"
     source: hosted
-    version: "1.4.0"
+    version: "1.4.1"
   checked_yaml:
     dependency: transitive
     description:
@@ -649,18 +649,18 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: dc58c723c3c24bf8d3e2d3ad3f2f9d7bd9cf43ec6feaa64181775e60190153f2
+      sha256: "12956d0ad8390bbcc63ca2e1469c0619946ccb52809807067a7020d57e647aa6"
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.17"
+    version: "0.12.18"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
+      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
       url: "https://pub.dev"
     source: hosted
-    version: "0.11.1"
+    version: "0.13.0"
   meta:
     dependency: transitive
     description:
@@ -1022,10 +1022,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: ab2726c1a94d3176a45960b6234466ec367179b87dd74f1611adb1f3b5fb9d55
+      sha256: "93167629bfc610f71560ab9312acdda4959de4df6fac7492c89ff0d3886f6636"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.7"
+    version: "0.7.9"
   timezone:
     dependency: transitive
     description: