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- using System.IO.Compression;
- namespace MeloongCore;
- public static class FileUtils {
- #region 写入
- /// <summary>
- /// 写入文件。
- /// 如果文件或文件夹不存在,则会自动创建。若已存在,则会覆盖原文件。
- /// </summary>
- public static void Write(string filePath, string text, Encoding? encoding = null) {
- Write(filePath, (encoding ?? new UTF8Encoding()).GetBytes(text));
- }
- /// <summary>
- /// 写入文件。
- /// 如果文件或文件夹不存在,则会自动创建。若已存在,则会覆盖原文件。
- /// </summary>
- public static void Write(string filePath, IEnumerable<byte> content) {
- Write(filePath, [..content]);
- }
- /// <summary>
- /// 写入文件。
- /// 如果文件或文件夹不存在,则会自动创建。若已存在,则会覆盖原文件。
- /// </summary>
- public static void Write(string filePath, byte[] content) {
- DirectoryUtils.Create(filePath, isFilePath: true);
- Logger.Trace($"写入文件:{filePath}({content.Length} 字节)");
- File.WriteAllBytes(PathUtils.WithLongPath(filePath), content);
- }
- /// <summary>
- /// 将 <paramref name="stream" /> 写入文件。
- /// 会将流的位置主动重置到开头。
- /// 如果文件或文件夹不存在,则会自动创建。若已存在,则会覆盖原文件。
- /// </summary>
- public static void Write(string filePath, Stream stream) {
- using FileStream fileStream = CreateAsStream(PathUtils.WithLongPath(filePath));
- if (stream.CanSeek && stream.Position != 0) stream.Seek(0, SeekOrigin.Begin);
- Logger.Trace($"写入文件:{filePath}({stream.GetType().Name} {stream.Length} 字节)");
- stream.CopyTo(fileStream);
- }
- #endregion
- #region 删除
- /// <summary>
- /// 删除文件。
- /// </summary>
- public static void Delete(string filePath, bool toRecycleBin = false) {
- if (!Exists(filePath)) return;
- Logger.Trace($"{(toRecycleBin ? "将文件删除到回收站" : "删除文件")}:{filePath}");
- if (toRecycleBin) {
- DeleteToRecycleBin(filePath);
- } else {
- File.Delete(PathUtils.WithLongPath(filePath));
- }
- }
- /// <summary>
- /// 将文件或文件夹删除到回收站。
- /// </summary>
- internal static void DeleteToRecycleBin(string target) {
- // 实际的删除方法
- static void Run(string filePath) {
- IShellItem? item = null;
- IFileOperation? op = null;
- try {
- var iid = typeof(IShellItem).GUID;
- Marshal.ThrowExceptionForHR(SHCreateItemFromParsingName(PathUtils.WithoutLongPath(filePath), IntPtr.Zero, ref iid, out item));
- op = (IFileOperation) new FileOperation();
- op.SetOperationFlags(0x0040 | 0x0010 | 0x0004); // FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_SILENT
- op.DeleteItem(item, IntPtr.Zero);
- op.PerformOperations();
- op.GetAnyOperationsAborted(out bool aborted);
- if (aborted) throw new OperationCanceledException("Delete operation was aborted.");
- } finally {
- if (op != null && Marshal.IsComObject(op)) Marshal.FinalReleaseComObject(op);
- if (item != null && Marshal.IsComObject(item)) Marshal.FinalReleaseComObject(item);
- }
- }
- // 在 STA 线程中执行删除方法
- if (Thread.CurrentThread.GetApartmentState() == ApartmentState.STA) {
- Run(target);
- } else {
- System.Runtime.ExceptionServices.ExceptionDispatchInfo? internalEx = null; // 捕获内部异常
- var thread = new Thread(() => { try { Run(target); } catch (Exception ex) { internalEx = System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex); } });
- thread.SetApartmentState(ApartmentState.STA);
- thread.Start();
- thread.Join();
- internalEx?.Throw();
- }
- }
- // 用于删除到回收站的接口
- [DllImport("shell32.dll", CharSet = CharSet.Unicode)]
- static extern int SHCreateItemFromParsingName([MarshalAs(UnmanagedType.LPWStr)] string pszPath, IntPtr pbc, ref Guid riid, [MarshalAs(UnmanagedType.Interface)] out IShellItem ppv);
- [ComImport, Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
- interface IShellItem { }
- [ComImport, Guid("3AD05575-8857-4850-9277-11B85BDB8E09")]
- class FileOperation { }
- [ComImport, Guid("947AAB5F-0A5C-4C13-B4D6-4BF7836FC9F8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
- interface IFileOperation {
- void Advise(IntPtr pfops, out uint pdwCookie);
- void Unadvise(uint dwCookie);
- void SetOperationFlags(uint dwOperationFlags);
- void SetProgressMessage([MarshalAs(UnmanagedType.LPWStr)] string pszMessage);
- void SetProgressDialog(IntPtr popd);
- void SetProperties(IntPtr pproparray);
- void SetOwnerWindow(IntPtr hwndOwner);
- void ApplyPropertiesToItem(IShellItem psiItem);
- void ApplyPropertiesToItems(IntPtr punkItems);
- void RenameItem(IShellItem psiItem, [MarshalAs(UnmanagedType.LPWStr)] string pszNewName, IntPtr pfopsItem);
- void RenameItems(IntPtr pUnkItems, [MarshalAs(UnmanagedType.LPWStr)] string pszNewName);
- void MoveItem(IShellItem psiItem, IShellItem psiDestinationFolder, [MarshalAs(UnmanagedType.LPWStr)] string pszNewName, IntPtr pfopsItem);
- void MoveItems(IntPtr punkItems, IShellItem psiDestinationFolder);
- void CopyItem(IShellItem psiItem, IShellItem psiDestinationFolder, [MarshalAs(UnmanagedType.LPWStr)] string pszCopyName, IntPtr pfopsItem);
- void CopyItems(IntPtr punkItems, IShellItem psiDestinationFolder);
- void DeleteItem(IShellItem psiItem, IntPtr pfopsItem);
- void DeleteItems(IntPtr punkItems);
- void NewItem(IShellItem psiDestinationFolder, uint dwFileAttributes, [MarshalAs(UnmanagedType.LPWStr)] string pszName, [MarshalAs(UnmanagedType.LPWStr)] string pszTemplateName, IntPtr pfopsItem);
- void PerformOperations();
- void GetAnyOperationsAborted([MarshalAs(UnmanagedType.Bool)] out bool pfAnyOperationsAborted);
- }
- #endregion
- #region FileStream
- /// <summary>
- /// 打开该文件的只读 <see cref="FileStream"/>。
- /// </summary>
- public static FileStream ReadAsStream(string filePath) {
- return new(PathUtils.WithLongPath(filePath), FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
- }
- /// <summary>
- /// 在指定路径创建文件,并打开 <see cref="FileStream"/>。
- /// </summary>
- public static FileStream CreateAsStream(string filePath) {
- DirectoryUtils.Create(filePath, isFilePath: true);
- Logger.Trace($"创建文件流:{filePath}");
- return new(PathUtils.WithLongPath(filePath), FileMode.Create);
- }
- #endregion
- #region 压缩包
- /// <summary>
- /// 以只读模式打开压缩文件。
- /// 会先尝试 UTF8 编码,失败后换用 GB18030 编码。
- /// </summary>
- public static ZipArchive OpenZip(string zipFilePath) {
- ZipArchive TryOpen(Encoding encoding) {
- Logger.Trace($"尝试以 {encoding.EncodingName} 编码打开压缩包:{zipFilePath}");
- var result = ZipFile.Open(PathUtils.WithLongPath(zipFilePath), ZipArchiveMode.Read, encoding);
- try {
- _ = result.Entries; // 如果编码有误,会在这里抛出 DecoderFallbackException;如果文件异常,会在这里抛出 InvalidDataException
- return result;
- } catch {
- result.Dispose();
- throw;
- }
- }
- try {
- try { // 尝试两种编码
- return TryOpen(new UTF8Encoding(false, true));
- } catch (DecoderFallbackException) {
- return TryOpen(Encoding.GetEncoding("GB18030"));
- }
- } catch (InvalidDataException ex) {
- throw new InvalidDataException($"文件不是压缩包,或者文件已损坏({zipFilePath})", ex);
- }
- }
- /// <summary>
- /// 尝试根据后缀名判断文件种类并解压文件,支持 gz 与 zip,会尝试将 jar 以 zip 方式解压。
- /// 会自动创建文件夹。会覆盖已有文件,但不会删除多余文件。
- /// </summary>
- /// <param name="progressHandler">参数为已完成的总比例(0~1)。</param>
- public static void ExtractToDirectory(string compressionFile, string outputDirectory, Action<double>? progressHandler = null) {
- compressionFile = PathUtils.WithLongPath(compressionFile);
- DirectoryUtils.Create(outputDirectory);
- // 解压 gz(gz 不需要考虑编码)
- if (compressionFile.EndsWithF(".gz", true)) {
- string outFilePath = Path.Combine(outputDirectory, Path.GetFileNameWithoutExtension(compressionFile));
- Logger.Trace($"解压 gz 文件:{compressionFile} → {outFilePath}");
- using var fileStream = FileUtils.ReadAsStream(compressionFile);
- using var gzipStream = new GZipStream(fileStream, CompressionMode.Decompress);
- FileUtils.Write(outFilePath, gzipStream);
- progressHandler?.Invoke(1);
- return;
- }
- // 解压 zip
- using var archive = FileUtils.OpenZip(compressionFile);
- int totalCount = archive.Entries.Count;
- int doneCount = 0;
- Logger.Trace($"解压 zip 文件:{compressionFile} → {outputDirectory}(共 {totalCount} 项)");
- foreach (var entry in archive.Entries) {
- doneCount++;
- if (totalCount > 0) progressHandler?.Invoke((double) doneCount / totalCount);
- if (string.IsNullOrEmpty(entry.Name)) continue; // 跳过文件夹条目(ZipArchive 会将文件夹也作为一个 entry,但它们的 Name 为空)
- // ZipSlip 修复
- string outputFilePath = PathUtils.WithLongPath(Path.GetFullPath(Path.Combine(outputDirectory, entry.FullName)));
- if (!outputFilePath.StartsWithF(PathUtils.WithSeparator(PathUtils.WithLongPath(Path.GetFullPath(outputDirectory))), ignoreCase:true))
- throw new ZipSlipException($"Zip 文件项 {entry.FullName} 的路径在压缩包之外,这可能导致安全问题");
- // 实际的解压
- using var entryStream = entry.Open();
- FileUtils.Write(outputFilePath, entryStream);
- }
- }
- public class ZipSlipException(string message) : Exception(message) {}
- /// <summary>
- /// 将指定文件夹的内容打包为 zip 文件。
- /// 会自动创建文件夹。会覆盖已有文件。
- /// </summary>
- public static void CreateZipFromDirectory(string outputFullPath, string sourceDirectory) {
- outputFullPath = PathUtils.WithLongPath(outputFullPath);
- sourceDirectory = PathUtils.WithLongPath(sourceDirectory);
- DirectoryUtils.Create(outputFullPath, isFilePath: true);
- FileUtils.Delete(outputFullPath);
- Logger.Trace($"将文件夹中的内容压缩为 zip 文件:{sourceDirectory} → {outputFullPath}");
- ZipFile.CreateFromDirectory(sourceDirectory, outputFullPath);
- }
- /// <summary>
- /// 将多个文件打包为 zip 文件,所有文件都会被放在压缩文件的根目录。
- /// 会自动创建文件夹。会覆盖已有文件。
- /// </summary>
- public static void CreateZipFromFiles(string outputFullPath, params string[] sourceFiles) {
- var sources = new Dictionary<string, string>();
- foreach (var source in sourceFiles) {
- string fileName = Path.GetFileName(source);
- if (sources.ContainsKey(fileName)) throw new ArgumentException($"尝试将多个同文件名的文件放进压缩包中({fileName})", nameof(sourceFiles));
- sources.Add(fileName, source);
- }
- CreateZipFromFiles(outputFullPath, sources);
- }
- /// <summary>
- /// 将多个文件打包为 zip 文件。
- /// 会自动创建文件夹。会覆盖已有文件。
- /// </summary>
- /// <param name="sources">键为 zip 文件下的路径,值为文件的本地路径。</param>
- public static void CreateZipFromFiles(string outputFullPath, IDictionary<string, string> sources) {
- outputFullPath = PathUtils.WithLongPath(outputFullPath);
- DirectoryUtils.Create(outputFullPath, isFilePath: true);
- FileUtils.Delete(outputFullPath);
- using var archive = ZipFile.Open(outputFullPath, ZipArchiveMode.Create);
- Logger.Trace($"创建 zip 文件:{sources.Count} 个文件 → {outputFullPath}\n{sources.Select(p => $"- {p.Value} → {p.Key}").Join('\n')}");
- foreach (var pair in sources) archive.CreateEntryFromFile(PathUtils.WithLongPath(pair.Value), pair.Key.Replace('\\', '/'), CompressionLevel.Optimal);
- }
- #endregion
- /// <summary>
- /// 确定指定的文件是否存在。
- /// </summary>
- public static bool Exists(string filePath) {
- return File.Exists(PathUtils.WithLongPath(filePath));
- }
- /// <summary>
- /// 创建 <see cref="FileInfo"/> 对象。
- /// </summary>
- public static FileInfo GetInfo(string path) {
- return new(PathUtils.WithLongPath(path));
- }
- /// <summary>
- /// 复制文件。
- /// 会创建对应文件夹、覆盖已有的文件。
- /// </summary>
- public static void Copy(string sourceFilePath, string destFilePath) {
- if (sourceFilePath == destFilePath) return; // 如果复制同一个文件则跳过
- DirectoryUtils.Create(destFilePath, isFilePath: true);
- Logger.Trace($"复制文件:{sourceFilePath} → {destFilePath}");
- File.Copy(PathUtils.WithLongPath(sourceFilePath), PathUtils.WithLongPath(destFilePath), true);
- }
- /// <summary>
- /// 剪切文件。
- /// 会创建对应文件夹、覆盖已有的文件。
- /// </summary>
- public static void Move(string sourceFilePath, string destFilePath) {
- if (sourceFilePath == destFilePath) return; // 如果移动同一个文件则跳过
- DirectoryUtils.Create(destFilePath, isFilePath: true);
- Logger.Trace($"剪切文件:{sourceFilePath} → {destFilePath}");
- File.Move(PathUtils.WithLongPath(sourceFilePath), PathUtils.WithLongPath(destFilePath));
- }
- }
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