FileUtils.cs 15 KB

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  1. using System.IO;
  2. using System.IO.Compression;
  3. namespace MeloongCore;
  4. public static class FileUtils {
  5. #region 写入
  6. /// <summary>
  7. /// 写入文件。
  8. /// 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。
  9. /// </summary>
  10. public static void Write(string filePath, string text, Encoding? encoding = null)
  11. => Write(filePath, (encoding ?? new UTF8Encoding()).GetBytes(text));
  12. /// <summary>
  13. /// 写入文件。
  14. /// 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。
  15. /// </summary>
  16. public static void Write(string filePath, IEnumerable<byte> content)
  17. => Write(filePath, [.. content]);
  18. /// <summary>
  19. /// 写入文件。
  20. /// 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。
  21. /// </summary>
  22. public static void Write(string filePath, byte[] content) {
  23. DirectoryUtils.Create(filePath, isFilePath: true);
  24. Logger.Trace($"写入文件:{filePath}({content.Length} 字节)");
  25. File.WriteAllBytes(PathUtils.WithLongPath(filePath), content);
  26. }
  27. /// <summary>
  28. /// 将 <paramref name="stream" /> 写入文件。
  29. /// 会将流的位置主动重置到开头。
  30. /// 如果文件或文件夹不存在,则会自动创建。若已存在,则会覆盖原文件。
  31. /// </summary>
  32. public static void Write(string filePath, Stream stream) {
  33. using FileStream fileStream = FileUtils.CreateAsStream(filePath);
  34. if (stream.CanSeek && stream.Position != 0) stream.Seek(0, SeekOrigin.Begin);
  35. Logger.Trace($"写入文件:{filePath}({stream.GetType().Name}{(stream.CanSeek ? $" {stream.Length} 字节" : "")})");
  36. stream.CopyTo(fileStream);
  37. }
  38. #endregion
  39. #region 删除
  40. /// <summary>
  41. /// 删除文件。
  42. /// </summary>
  43. public static void Delete(string filePath, bool toRecycleBin = false) {
  44. if (!FileUtils.Exists(filePath)) return;
  45. Logger.Trace($"{(toRecycleBin ? "将文件删除到回收站" : "删除文件")}:{filePath}");
  46. if (toRecycleBin) {
  47. DeleteToRecycleBin(filePath);
  48. } else {
  49. File.Delete(PathUtils.WithLongPath(filePath));
  50. }
  51. }
  52. /// <summary>
  53. /// 将文件或文件夹删除到回收站。
  54. /// </summary>
  55. internal static void DeleteToRecycleBin(string target) {
  56. // 实际的删除方法
  57. static void Run(string filePath) {
  58. IShellItem? item = null;
  59. IFileOperation? op = null;
  60. try {
  61. var iid = typeof(IShellItem).GUID;
  62. Marshal.ThrowExceptionForHR(SHCreateItemFromParsingName(PathUtils.WithoutLongPath(filePath), IntPtr.Zero, ref iid, out item));
  63. op = (IFileOperation) new FileOperation();
  64. op.SetOperationFlags(0x0040 | 0x0010 | 0x0004); // FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_SILENT
  65. op.DeleteItem(item, IntPtr.Zero);
  66. op.PerformOperations();
  67. op.GetAnyOperationsAborted(out bool aborted);
  68. if (aborted) throw new OperationCanceledException("Delete operation was aborted.");
  69. } finally {
  70. if (op != null && Marshal.IsComObject(op)) Marshal.FinalReleaseComObject(op);
  71. if (item != null && Marshal.IsComObject(item)) Marshal.FinalReleaseComObject(item);
  72. }
  73. }
  74. // 在 STA 线程中执行删除方法
  75. if (Thread.CurrentThread.GetApartmentState() == ApartmentState.STA) {
  76. Run(target);
  77. } else {
  78. System.Runtime.ExceptionServices.ExceptionDispatchInfo? internalEx = null; // 捕获内部异常
  79. var thread = new Thread(
  80. () => { try { Run(target); } catch (Exception ex) { internalEx = System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex); } })
  81. { IsBackground = true, Name = nameof(DeleteToRecycleBin) };
  82. thread.SetApartmentState(ApartmentState.STA);
  83. thread.Start();
  84. thread.Join();
  85. internalEx?.Throw();
  86. }
  87. }
  88. // API
  89. [DllImport("shell32.dll", CharSet = CharSet.Unicode)]
  90. static extern int SHCreateItemFromParsingName([MarshalAs(UnmanagedType.LPWStr)] string pszPath, IntPtr pbc, ref Guid riid, [MarshalAs(UnmanagedType.Interface)] out IShellItem ppv);
  91. [ComImport, Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
  92. interface IShellItem { }
  93. [ComImport, Guid("3AD05575-8857-4850-9277-11B85BDB8E09")]
  94. class FileOperation { }
  95. [ComImport, Guid("947AAB5F-0A5C-4C13-B4D6-4BF7836FC9F8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
  96. interface IFileOperation {
  97. void Advise(IntPtr pfops, out uint pdwCookie);
  98. void Unadvise(uint dwCookie);
  99. void SetOperationFlags(uint dwOperationFlags);
  100. void SetProgressMessage([MarshalAs(UnmanagedType.LPWStr)] string pszMessage);
  101. void SetProgressDialog(IntPtr popd);
  102. void SetProperties(IntPtr pproparray);
  103. void SetOwnerWindow(IntPtr hwndOwner);
  104. void ApplyPropertiesToItem(IShellItem psiItem);
  105. void ApplyPropertiesToItems(IntPtr punkItems);
  106. void RenameItem(IShellItem psiItem, [MarshalAs(UnmanagedType.LPWStr)] string pszNewName, IntPtr pfopsItem);
  107. void RenameItems(IntPtr pUnkItems, [MarshalAs(UnmanagedType.LPWStr)] string pszNewName);
  108. void MoveItem(IShellItem psiItem, IShellItem psiDestinationFolder, [MarshalAs(UnmanagedType.LPWStr)] string pszNewName, IntPtr pfopsItem);
  109. void MoveItems(IntPtr punkItems, IShellItem psiDestinationFolder);
  110. void CopyItem(IShellItem psiItem, IShellItem psiDestinationFolder, [MarshalAs(UnmanagedType.LPWStr)] string pszCopyName, IntPtr pfopsItem);
  111. void CopyItems(IntPtr punkItems, IShellItem psiDestinationFolder);
  112. void DeleteItem(IShellItem psiItem, IntPtr pfopsItem);
  113. void DeleteItems(IntPtr punkItems);
  114. void NewItem(IShellItem psiDestinationFolder, uint dwFileAttributes, [MarshalAs(UnmanagedType.LPWStr)] string pszName, [MarshalAs(UnmanagedType.LPWStr)] string pszTemplateName, IntPtr pfopsItem);
  115. void PerformOperations();
  116. void GetAnyOperationsAborted([MarshalAs(UnmanagedType.Bool)] out bool pfAnyOperationsAborted);
  117. }
  118. #endregion
  119. #region FileStream
  120. /// <summary>
  121. /// 打开该文件的只读 <see cref="FileStream"/>。
  122. /// </summary>
  123. public static FileStream ReadAsStream(string filePath)
  124. => new(PathUtils.WithLongPath(filePath), FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
  125. /// <summary>
  126. /// 在指定路径创建文件,并打开 <see cref="FileStream"/>。
  127. /// </summary>
  128. public static FileStream CreateAsStream(string filePath) {
  129. DirectoryUtils.Create(filePath, isFilePath: true);
  130. Logger.Trace($"创建文件流:{filePath}");
  131. return new(PathUtils.WithLongPath(filePath), FileMode.Create);
  132. }
  133. #endregion
  134. #region 压缩包
  135. /// <summary>
  136. /// 以只读模式打开压缩文件。
  137. /// 会先尝试 UTF8 编码,失败后换用 GB18030 编码。
  138. /// </summary>
  139. public static ZipArchive OpenZip(string zipFilePath) {
  140. ZipArchive TryOpen(Encoding encoding) {
  141. Logger.Trace($"尝试以 {encoding.EncodingName} 编码打开压缩包:{zipFilePath}");
  142. var result = ZipFile.Open(PathUtils.WithLongPath(zipFilePath), ZipArchiveMode.Read, encoding);
  143. try {
  144. _ = 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
  145. return result;
  146. } catch {
  147. result.Dispose();
  148. throw;
  149. }
  150. }
  151. try {
  152. try { // 尝试两种编码
  153. return TryOpen(new UTF8Encoding(false, true));
  154. } catch (DecoderFallbackException) {
  155. return TryOpen(Encoding.GetEncoding("GB18030"));
  156. }
  157. } catch (InvalidDataException ex) {
  158. throw new InvalidDataException($"文件不是压缩包,或者文件已损坏({zipFilePath})", ex);
  159. }
  160. }
  161. /// <summary>
  162. /// 尝试根据后缀名判断文件种类并解压文件,支持 gz 与 zip,会尝试将 jar 以 zip 方式解压。
  163. /// 会自动创建文件夹。会覆盖已有文件,但不会删除多余文件。
  164. /// </summary>
  165. /// <param name="progressHandler">参数为已完成的总比例(0~1)。</param>
  166. public static void ExtractToDirectory(string compressionFile, string outputDirectory, Action<double>? progressHandler = null) {
  167. compressionFile = PathUtils.WithLongPath(compressionFile);
  168. DirectoryUtils.Create(outputDirectory);
  169. // 解压 gz(gz 不需要考虑编码)
  170. if (compressionFile.EndsWithF(".gz", true)) {
  171. string outFilePath = Path.Combine(outputDirectory, Path.GetFileNameWithoutExtension(compressionFile));
  172. Logger.Trace($"解压 gz 文件:{compressionFile} → {outFilePath}");
  173. using var fileStream = FileUtils.ReadAsStream(compressionFile);
  174. using var gzipStream = new GZipStream(fileStream, CompressionMode.Decompress);
  175. FileUtils.Write(outFilePath, gzipStream);
  176. progressHandler?.Invoke(1);
  177. return;
  178. }
  179. // 解压 zip
  180. using var archive = FileUtils.OpenZip(compressionFile);
  181. int totalCount = archive.Entries.Count;
  182. int doneCount = 0;
  183. Logger.Trace($"解压 zip 文件:{compressionFile} → {outputDirectory}(共 {totalCount} 项)");
  184. foreach (var entry in archive.Entries) {
  185. doneCount++;
  186. if (totalCount > 0) progressHandler?.Invoke((double) doneCount / totalCount);
  187. if (string.IsNullOrEmpty(entry.Name)) continue; // 跳过文件夹条目(ZipArchive 会将文件夹也作为一个 entry,但它们的 Name 为空)
  188. // ZipSlip 修复
  189. string outputFilePath = PathUtils.WithLongPath(Path.GetFullPath(Path.Combine(outputDirectory, entry.FullName)));
  190. if (!outputFilePath.StartsWithF(PathUtils.WithSeparator(PathUtils.WithLongPath(Path.GetFullPath(outputDirectory))), ignoreCase:true))
  191. throw new ZipSlipException($"Zip 文件项 {entry.FullName} 的路径在压缩包之外,这可能导致安全问题");
  192. // 实际的解压
  193. using var entryStream = entry.Open();
  194. FileUtils.Write(outputFilePath, entryStream);
  195. }
  196. }
  197. public class ZipSlipException(string message) : Exception(message) {}
  198. /// <summary>
  199. /// 将指定文件夹的内容打包为 zip 文件。
  200. /// 会自动创建文件夹。会覆盖已有文件。
  201. /// </summary>
  202. public static void CreateZipFromDirectory(string outputFullPath, string sourceDirectory) {
  203. outputFullPath = PathUtils.WithLongPath(outputFullPath);
  204. sourceDirectory = PathUtils.WithLongPath(sourceDirectory);
  205. DirectoryUtils.Create(outputFullPath, isFilePath: true);
  206. FileUtils.Delete(outputFullPath);
  207. Logger.Trace($"将文件夹中的内容压缩为 zip 文件:{sourceDirectory} → {outputFullPath}");
  208. ZipFile.CreateFromDirectory(sourceDirectory, outputFullPath);
  209. }
  210. /// <summary>
  211. /// 将多个文件打包为 zip 文件,所有文件都会被放在压缩文件的根目录。
  212. /// 会自动创建文件夹。会覆盖已有文件。
  213. /// </summary>
  214. public static void CreateZipFromFiles(string outputFullPath, params string[] sourceFiles) {
  215. var sources = new Dictionary<string, string>();
  216. foreach (var source in sourceFiles) {
  217. string fileName = Path.GetFileName(source);
  218. if (sources.ContainsKey(fileName)) throw new ArgumentException($"尝试将多个同文件名的文件放进压缩包中({fileName})", nameof(sourceFiles));
  219. sources.Add(fileName, source);
  220. }
  221. CreateZipFromFiles(outputFullPath, sources);
  222. }
  223. /// <summary>
  224. /// 将多个文件打包为 zip 文件。
  225. /// 会自动创建文件夹。会覆盖已有文件。
  226. /// </summary>
  227. /// <param name="sources">键为 zip 文件下的路径,值为文件的本地路径。</param>
  228. public static void CreateZipFromFiles(string outputFullPath, IDictionary<string, string> sources) {
  229. outputFullPath = PathUtils.WithLongPath(outputFullPath);
  230. DirectoryUtils.Create(outputFullPath, isFilePath: true);
  231. FileUtils.Delete(outputFullPath);
  232. using var archive = ZipFile.Open(outputFullPath, ZipArchiveMode.Create);
  233. Logger.Trace($"创建 zip 文件:{sources.Count} 个文件 → {outputFullPath}\n{sources.Select(p => $"- {p.Value} → {p.Key}").Join('\n')}");
  234. foreach (var pair in sources) archive.CreateEntryFromFile(PathUtils.WithLongPath(pair.Value), pair.Key.Replace('\\', '/'), CompressionLevel.Optimal);
  235. }
  236. #endregion
  237. /// <summary>
  238. /// 确定指定的文件是否存在。
  239. /// </summary>
  240. public static bool Exists(string filePath)
  241. => File.Exists(PathUtils.WithLongPath(filePath));
  242. /// <summary>
  243. /// 创建 <see cref="FileInfo"/> 对象。
  244. /// </summary>
  245. public static FileInfo GetInfo(string path)
  246. => new(PathUtils.WithLongPath(path));
  247. /// <summary>
  248. /// 复制文件。
  249. /// 会创建对应文件夹、覆盖已有的文件。
  250. /// 若原文件不存在,则不执行。
  251. /// </summary>
  252. public static void Copy(string sourceFilePath, string destFilePath) {
  253. if (sourceFilePath == destFilePath) return; // 如果复制同一个文件则跳过
  254. if (!FileUtils.Exists(sourceFilePath)) {
  255. Logger.Info($"尝试复制文件,但原文件不存在,已跳过复制:{sourceFilePath} → {destFilePath}");
  256. return;
  257. }
  258. DirectoryUtils.Create(destFilePath, isFilePath: true);
  259. Logger.Trace($"复制文件:{sourceFilePath} → {destFilePath}");
  260. File.Copy(PathUtils.WithLongPath(sourceFilePath), PathUtils.WithLongPath(destFilePath), true);
  261. }
  262. /// <summary>
  263. /// 剪切文件。
  264. /// 会创建对应文件夹、覆盖已有的文件。
  265. /// </summary>
  266. public static void Move(string sourceFilePath, string destFilePath) {
  267. if (sourceFilePath == destFilePath) return; // 如果移动同一个文件则跳过
  268. DirectoryUtils.Create(destFilePath, isFilePath: true);
  269. FileUtils.Delete(destFilePath);
  270. Logger.Trace($"剪切文件:{sourceFilePath} → {destFilePath}");
  271. File.Move(PathUtils.WithLongPath(sourceFilePath), PathUtils.WithLongPath(destFilePath));
  272. }
  273. }