2.13.0.0
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龙腾猫跃
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namespace PCLCS;
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/// <summary>
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/// 单个 Java 的实例。
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/// </summary>
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[Serializable] public class Java(string folder, Version? version = null) {
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/// <summary>
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/// java.exe 文件所在的文件夹路径，这通常是 bin 文件夹。以 \ 结尾。
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/// </summary>
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public readonly string Folder = PathUtils.AddSlashSuffix(PathUtils.ForCompare(folder));
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/// <summary>
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/// java.exe 文件的完整路径。
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/// </summary>
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[JsonIgnore] public string JavaExePath => Path.Combine(Folder, "java.exe");
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/// <summary>
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/// Java 的版本号（例如 16.0.1），保证 <see cref="Version.Major"/> 为其主版本。
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/// <para/> 若为 null，则还需要调用 <see cref="CheckAsync"/> 以获取版本号。
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/// </summary>
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public Version? Version = version;
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/// <summary>
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/// 检查该 Java 是否存在问题，并获取其版本号。
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/// 返回其是否通过了检查。
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/// </summary>
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public async Task<bool> CheckAsync(CancellationToken cancellationToken = default) {
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if (Interlocked.Exchange(ref isChecked, 1) == 1 && available != null) return available!.Value; // 已检查过
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string? output = null;
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try {
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if (!FileUtils.Exists(JavaExePath)) throw new FileNotFoundException("未找到 java.exe 文件", JavaExePath);
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// 运行 -version
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output = (await TaskUtils.RunProgramAsync(JavaExePath, "-version", 15000, cancellationToken: cancellationToken).NoCapture()).Output.Lower();
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if (output == "") throw new InvalidOperationException("尝试运行该 Java 失败");
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Logger.Trace($"Java 检查输出：{JavaExePath}{Environment.NewLine}{output}");
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if (output.Contains("/lib/ext exists")) throw new InvalidOperationException("无法运行该 Java，请在删除 Java 文件夹中的 /lib/ext 文件夹后再试");
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if (output.Contains("a fatal error") || output.Contains("error: ")) throw new InvalidOperationException("无法运行该 Java，该 Java 或系统存在问题");
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// 获取版本号
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var versionString = (output.RegexSeek(@"(?<=version "")[^""]+") ?? output.RegexSeek("(?<=openjdk )[0-9]+"))?.Replace("_", ".").Replace("+", ".").BeforeFirst("-");
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if (string.IsNullOrEmpty(versionString)) throw new InvalidOperationException($"未找到该 Java 的版本号{(output.Length < 500 ? $"\n原始输出为：\n{output}" : "")}");
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if (versionString.StartsWithF("1.")) versionString = versionString!.AfterFirst("."); // 去除开头的 1.
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var segments = versionString!.Split(".", true).ToList();
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while (segments.Count < 4) segments.Add("0");
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Version = new Version(segments.Take(4).Join("."));
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if (Version.Major is <= 4 or >= 100) throw new InvalidOperationException($"分析详细信息失败，获取的版本为 {Version}{(output.Length < 500 ? $"\n原始输出为：\n{output}" : "")}");
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if (!output.Contains("64-bit")) throw new InvalidOperationException("该 Java 为 32 位版本，请安装 64 位的 Java");
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Logger.Info($"检查 Java 成功：{this}");
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available = true;
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} catch (Exception ex) {
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if (ex.IsCanceled()) {
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isChecked = 0;
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throw;
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}
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Logger.Warn($"检查 Java 失败（{JavaExePath}），其输出为：\n{output ?? "无程序输出"}");
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available = false;
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}
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return available!.Value;
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}
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[JsonIgnore] private int isChecked = 0;
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/// <summary>若已进行过检查，表示该检查是否成功。若未检查，则为 null。</summary>
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[JsonIgnore] internal bool? available = null;
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/// <summary>用户友好的描述文本。</summary>
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public override string ToString()
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=> $"Java {Version?.Major.ToString() ?? "尚未检查"} ({Version})：{Folder}";
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}
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public static class JavaUtils {
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/// <summary>
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/// 检查所有指定的 Java 是否存在问题，并获取其版本号。
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/// </summary>
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/// <returns>所有通过检查的 Java。</returns>
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public static async Task<List<Java>> CheckAllAsync(IEnumerable<Java> javas, CancellationToken cancellationToken = default, ProgressProvider? progress = null) {
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await TaskUtils.WhenAll(javas.Where(j => j.available == null).Select(
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async java => await java.CheckAsync(cancellationToken).NoCapture()
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), progress).NoCapture();
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return javas.Where(j => j.available == true).ToList();
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}
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/// <summary>
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/// 将 Java 列表进行排序。
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/// 这同时会检查所有未检查的 Java。
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/// </summary>
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public static async Task<List<Java>> SortAsync(List<Java> javas, CancellationToken cancellationToken = default, ProgressProvider? progress = null) {
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javas = await JavaUtils.CheckAllAsync(javas, cancellationToken, progress).NoCapture();
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javas.Sort((left, right) => {
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// 优先使用带完整 Java 的文件夹列表中的 Java
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var isLeftInCandidateFolder = JavaUtils.CandidateFolders.Any(folder => PathUtils.IsParentOf(folder, left.Folder));
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var isRightInCandidateFolder = JavaUtils.CandidateFolders.Any(folder => PathUtils.IsParentOf(folder, right.Folder));
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if (isLeftInCandidateFolder != isRightInCandidateFolder) return isLeftInCandidateFolder ? -1 : 1;
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// 其次优先使用主版本号接近 25 的 Java
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var leftDistance = left.Version is null ? int.MaxValue : Math.Abs(left.Version.Major - 25);
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var rightDistance = right.Version is null ? int.MaxValue : Math.Abs(right.Version.Major - 25);
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return leftDistance.CompareTo(rightDistance);
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});
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return javas;
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}
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#region 搜索
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/// <summary>
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/// 存在完整 Java 的文件夹列表。
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/// </summary>
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internal static readonly List<string> CandidateFolders = [
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Paths.AppData + @".minecraft\runtime\", // 这也是 PCL 下载 Java 的路径
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Paths.AppData + @".hmcl\java\",
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Paths.AppData + @"ATLauncher\runtimes\minecraft\",
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Paths.AppData + @"ModrinthApp\meta\java_versions\",
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Paths.AppData + @"PrismLauncher\java\",
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Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) + @"\curseforge\minecraft\Install\runtime\",
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Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) + @"\.jdks\",
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Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) + @"\.sdkman\candidates\java\",
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Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + @"\.ftba\bin\runtime\",
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Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + @"\Packages\Microsoft.4297127D64EC6_8wekyb3d8bbwe\LocalCache\Local\runtime\",
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Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86) + @"\Minecraft Launcher\runtime\",
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Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86) + @"\Minecraft\runtime\",
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Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\Curse\Minecraft\Install\runtime\",
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Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles) + @"\Java\",
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Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles) + @"\Eclipse Adoptium\",
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Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles) + @"\Amazon Corretto\",
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Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles) + @"\Zulu\",
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..DirectoryUtils.EnumerateDirectories(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles) + @"\Microsoft\", searchPattern: "jdk-*"),
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// 环境变量
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..(Environment.GetEnvironmentVariable("JDK_HOME") + ";" + Environment.GetEnvironmentVariable("JAVA_HOME")).
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Split(";", true).Select(path => path.Trim(' ', '"'))
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];
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/// <summary>
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/// 从常见文件夹和环境变量中搜索 Java，并将搜索结果写入设置。
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/// </summary>
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public static async Task RefreshListAsync(CancellationToken c = default, ProgressProvider? p = null) {
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// 搜索
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List<Java> javaList = await SearchFoldersAsync(true, CandidateFolders, c, p?.SplitTo(0.5)).NoCapture();
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// 将新发现的 Java 排在最前，原有列表保留既有顺序排在后面
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var oldJavaList = Configs.JavaList.Get()!;
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oldJavaList = await JavaUtils.CheckAllAsync(oldJavaList, c, p?.SplitTo(0.9)).NoCapture(); // 检查原有列表中的 Java
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HashSet<string> oldJavaFolders = new(oldJavaList.Select(j => j.Folder), StringComparer.OrdinalIgnoreCase);
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javaList.RemoveIf(j => oldJavaFolders.Contains(j.Folder)); // 此时 javaList 中只剩下新发现的 Java
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javaList = await JavaUtils.SortAsync(javaList, c).NoCapture(); // 将所有新发现的 Java 按优先级排序
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javaList.AddRange(oldJavaList);
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javaList = javaList.DistinctBy(j => j.Folder.Lower()).ToList();
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// 删掉已被移除的 Java
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javaList.RemoveIf(j => Configs.JavaRemovedList.Get()!.Contains(j.Folder, StringComparer.OrdinalIgnoreCase));
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// 写入设置
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Configs.JavaList.Set([..javaList]);
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Logger.Info($"Java 搜索完成，发现 {javaList.Count} 个 Java");
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}
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/// <summary>
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/// 并行搜索所有指定的文件夹及其子文件夹中的 Java，并检查其有效性。
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/// </summary>
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public static async Task<List<Java>> SearchFoldersAsync(bool includeSubDirectories, IEnumerable<string> folders, CancellationToken cancellationToken = default, ProgressProvider? progress = null) {
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// 并行搜索
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ConcurrentBag<(string Folder, bool HasReparsePoint, bool IsSpecialPath)> results = [];
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await TaskUtils.ForEachAsync(folders.Distinct(StringComparer.OrdinalIgnoreCase), 4, async (folder, cp) => {
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await Task.Run(() => {
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try {
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foreach (var file in DirectoryUtils.EnumerateFiles(folder, includeSubDirectories, "java.exe")) {
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cancellationToken.ThrowIfCancellationRequested();
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string targetFolder = PathUtils.AddSlashSuffix(PathUtils.ForCompare(PathUtils.RemoveLastPart(file)));
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// 判断文件夹是否包含重解析点（例如符号链接）
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static bool HasReparsePoint(FileSystemInfo info) {
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do {
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if (info.Attributes.HasFlag(FileAttributes.ReparsePoint)) return true;
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info = info is FileInfo fileInfo ? fileInfo.Directory : ((DirectoryInfo) info).Parent;
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} while (info is not null);
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return false;
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}
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// 结果
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var hasReparsePoint = HasReparsePoint(FileUtils.GetInfo(Path.Combine(targetFolder, "java.exe")));
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var isSpecialPath = targetFolder.Contains("java8path_target_") || targetFolder.Contains("javapath_target_") || targetFolder.Contains("javatmp") || targetFolder.Contains("system32");
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results.Add((targetFolder, hasReparsePoint, isSpecialPath));
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}
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} catch (UnauthorizedAccessException) {
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Logger.Info($"快速查找 Java 时没有权限（{folder}）");
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} catch (Exception ex) {
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ex.ThrowIfCanceled();
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Logger.Warn(ex, $"快速查找 Java 时出错（{folder}）");
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}
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}, cancellationToken).NoCapture();
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}, cancellationToken, progress?.SplitTo(0.2)).NoCapture();
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if (!results.Any()) return [];
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// 筛除重解析点
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if (results.All(r => r.HasReparsePoint)) {
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Logger.Warn("找到的所有 Java 都包含重解析点，保留全部结果");
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} else if (results.Any(r => r.HasReparsePoint)) {
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Logger.Info($"找到以下的 Java 包含重解析点，将它们从列表中排除：{results.Where(r => r.HasReparsePoint).Select(r => r.Folder).Join('、')}");
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results = [..results.Where(r => !r.HasReparsePoint)];
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}
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// 筛除特殊路径
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if (results.All(r => r.IsSpecialPath)) {
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Logger.Warn("找到的所有 Java 都包含特殊路径，保留全部结果");
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} else if (results.Any(r => r.IsSpecialPath)) {
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Logger.Info($"找到以下的 Java 包含特殊路径，将它们从列表中排除：{results.Where(r => r.IsSpecialPath).Select(r => r.Folder).Join('、')}");
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results = [..results.Where(r => !r.IsSpecialPath)];
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}
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// 检查并返回
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List<Java> javaList = results.Select(r => r.Folder).Distinct(StringComparer.OrdinalIgnoreCase).Select(folder => new Java(folder)).ToList();
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javaList = (await JavaUtils.CheckAllAsync(javaList, cancellationToken, progress?.SplitTo(1)).NoCapture()).ToList();
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javaList = await JavaUtils.SortAsync(javaList, cancellationToken).NoCapture();
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Logger.Info($"快速查找 Java 完成，共有 {javaList.Count} 个候选：{javaList.Join('、')}");
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return javaList;
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}
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#endregion
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}
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