733 lines
24 KiB
C#
733 lines
24 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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namespace Emby.Common.Implementations.IO
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{
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/// <summary>
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/// Class ManagedFileSystem
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/// </summary>
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public class ManagedFileSystem : IFileSystem
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{
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protected ILogger Logger;
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private readonly bool _supportsAsyncFileStreams;
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private char[] _invalidFileNameChars;
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private readonly List<IShortcutHandler> _shortcutHandlers = new List<IShortcutHandler>();
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protected bool EnableFileSystemRequestConcat = true;
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public ManagedFileSystem(ILogger logger, bool supportsAsyncFileStreams, bool enableManagedInvalidFileNameChars)
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{
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Logger = logger;
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_supportsAsyncFileStreams = supportsAsyncFileStreams;
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SetInvalidFileNameChars(enableManagedInvalidFileNameChars);
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}
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public void AddShortcutHandler(IShortcutHandler handler)
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{
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_shortcutHandlers.Add(handler);
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}
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protected void SetInvalidFileNameChars(bool enableManagedInvalidFileNameChars)
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{
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if (enableManagedInvalidFileNameChars)
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{
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_invalidFileNameChars = Path.GetInvalidFileNameChars();
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}
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else
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{
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// GetInvalidFileNameChars is less restrictive in Linux/Mac than Windows, this mimic Windows behavior for mono under Linux/Mac.
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_invalidFileNameChars = new char[41] { '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
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'\x08', '\x09', '\x0A', '\x0B', '\x0C', '\x0D', '\x0E', '\x0F', '\x10', '\x11', '\x12',
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'\x13', '\x14', '\x15', '\x16', '\x17', '\x18', '\x19', '\x1A', '\x1B', '\x1C', '\x1D',
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'\x1E', '\x1F', '\x22', '\x3C', '\x3E', '\x7C', ':', '*', '?', '\\', '/' };
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}
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}
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public char DirectorySeparatorChar
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{
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get
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{
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return Path.DirectorySeparatorChar;
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}
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}
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public string GetFullPath(string path)
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{
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return Path.GetFullPath(path);
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}
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/// <summary>
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/// Determines whether the specified filename is shortcut.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns><c>true</c> if the specified filename is shortcut; otherwise, <c>false</c>.</returns>
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/// <exception cref="System.ArgumentNullException">filename</exception>
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public virtual bool IsShortcut(string filename)
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{
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if (string.IsNullOrEmpty(filename))
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{
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throw new ArgumentNullException("filename");
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}
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var extension = Path.GetExtension(filename);
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return _shortcutHandlers.Any(i => string.Equals(extension, i.Extension, StringComparison.OrdinalIgnoreCase));
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}
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/// <summary>
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/// Resolves the shortcut.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns>System.String.</returns>
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/// <exception cref="System.ArgumentNullException">filename</exception>
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public virtual string ResolveShortcut(string filename)
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{
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if (string.IsNullOrEmpty(filename))
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{
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throw new ArgumentNullException("filename");
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}
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var extension = Path.GetExtension(filename);
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var handler = _shortcutHandlers.FirstOrDefault(i => string.Equals(extension, i.Extension, StringComparison.OrdinalIgnoreCase));
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if (handler != null)
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{
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return handler.Resolve(filename);
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}
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return null;
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}
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/// <summary>
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/// Creates the shortcut.
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/// </summary>
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/// <param name="shortcutPath">The shortcut path.</param>
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/// <param name="target">The target.</param>
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/// <exception cref="System.ArgumentNullException">
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/// shortcutPath
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/// or
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/// target
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/// </exception>
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public void CreateShortcut(string shortcutPath, string target)
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{
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if (string.IsNullOrEmpty(shortcutPath))
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{
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throw new ArgumentNullException("shortcutPath");
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}
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if (string.IsNullOrEmpty(target))
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{
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throw new ArgumentNullException("target");
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}
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var extension = Path.GetExtension(shortcutPath);
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var handler = _shortcutHandlers.FirstOrDefault(i => string.Equals(extension, i.Extension, StringComparison.OrdinalIgnoreCase));
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if (handler != null)
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{
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handler.Create(shortcutPath, target);
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}
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else
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{
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throw new NotImplementedException();
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}
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}
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/// <summary>
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/// Returns a <see cref="FileSystemMetadata"/> object for the specified file or directory path.
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/// </summary>
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/// <param name="path">A path to a file or directory.</param>
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/// <returns>A <see cref="FileSystemMetadata"/> object.</returns>
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/// <remarks>If the specified path points to a directory, the returned <see cref="FileSystemMetadata"/> object's
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/// <see cref="FileSystemMetadata.IsDirectory"/> property will be set to true and all other properties will reflect the properties of the directory.</remarks>
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public FileSystemMetadata GetFileSystemInfo(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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// Take a guess to try and avoid two file system hits, but we'll double-check by calling Exists
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if (Path.HasExtension(path))
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{
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var fileInfo = new FileInfo(path);
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if (fileInfo.Exists)
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{
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return GetFileSystemMetadata(fileInfo);
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}
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return GetFileSystemMetadata(new DirectoryInfo(path));
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}
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else
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{
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var fileInfo = new DirectoryInfo(path);
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if (fileInfo.Exists)
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{
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return GetFileSystemMetadata(fileInfo);
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}
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return GetFileSystemMetadata(new FileInfo(path));
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}
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}
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/// <summary>
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/// Returns a <see cref="FileSystemMetadata"/> object for the specified file path.
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/// </summary>
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/// <param name="path">A path to a file.</param>
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/// <returns>A <see cref="FileSystemMetadata"/> object.</returns>
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/// <remarks><para>If the specified path points to a directory, the returned <see cref="FileSystemMetadata"/> object's
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/// <see cref="FileSystemMetadata.IsDirectory"/> property and the <see cref="FileSystemMetadata.Exists"/> property will both be set to false.</para>
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/// <para>For automatic handling of files <b>and</b> directories, use <see cref="GetFileSystemInfo"/>.</para></remarks>
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public FileSystemMetadata GetFileInfo(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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var fileInfo = new FileInfo(path);
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return GetFileSystemMetadata(fileInfo);
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}
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/// <summary>
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/// Returns a <see cref="FileSystemMetadata"/> object for the specified directory path.
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/// </summary>
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/// <param name="path">A path to a directory.</param>
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/// <returns>A <see cref="FileSystemMetadata"/> object.</returns>
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/// <remarks><para>If the specified path points to a file, the returned <see cref="FileSystemMetadata"/> object's
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/// <see cref="FileSystemMetadata.IsDirectory"/> property will be set to true and the <see cref="FileSystemMetadata.Exists"/> property will be set to false.</para>
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/// <para>For automatic handling of files <b>and</b> directories, use <see cref="GetFileSystemInfo"/>.</para></remarks>
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public FileSystemMetadata GetDirectoryInfo(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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var fileInfo = new DirectoryInfo(path);
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return GetFileSystemMetadata(fileInfo);
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}
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private FileSystemMetadata GetFileSystemMetadata(FileSystemInfo info)
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{
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var result = new FileSystemMetadata();
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result.Exists = info.Exists;
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result.FullName = info.FullName;
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result.Extension = info.Extension;
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result.Name = info.Name;
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if (result.Exists)
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{
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var attributes = info.Attributes;
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result.IsDirectory = info is DirectoryInfo || (attributes & FileAttributes.Directory) == FileAttributes.Directory;
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result.IsHidden = (attributes & FileAttributes.Hidden) == FileAttributes.Hidden;
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result.IsReadOnly = (attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly;
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var fileInfo = info as FileInfo;
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if (fileInfo != null)
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{
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result.Length = fileInfo.Length;
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result.DirectoryName = fileInfo.DirectoryName;
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}
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result.CreationTimeUtc = GetCreationTimeUtc(info);
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result.LastWriteTimeUtc = GetLastWriteTimeUtc(info);
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}
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else
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{
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result.IsDirectory = info is DirectoryInfo;
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}
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return result;
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}
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/// <summary>
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/// The space char
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/// </summary>
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private const char SpaceChar = ' ';
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/// <summary>
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/// Takes a filename and removes invalid characters
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns>System.String.</returns>
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/// <exception cref="System.ArgumentNullException">filename</exception>
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public string GetValidFilename(string filename)
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{
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if (string.IsNullOrEmpty(filename))
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{
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throw new ArgumentNullException("filename");
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}
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var builder = new StringBuilder(filename);
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foreach (var c in _invalidFileNameChars)
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{
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builder = builder.Replace(c, SpaceChar);
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}
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return builder.ToString();
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}
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/// <summary>
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/// Gets the creation time UTC.
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/// </summary>
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/// <param name="info">The info.</param>
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/// <returns>DateTime.</returns>
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public DateTime GetCreationTimeUtc(FileSystemInfo info)
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{
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// This could throw an error on some file systems that have dates out of range
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try
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{
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return info.CreationTimeUtc;
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}
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catch (Exception ex)
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{
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Logger.ErrorException("Error determining CreationTimeUtc for {0}", ex, info.FullName);
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return DateTime.MinValue;
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}
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}
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/// <summary>
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/// Gets the creation time UTC.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <returns>DateTime.</returns>
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public DateTime GetCreationTimeUtc(string path)
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{
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return GetCreationTimeUtc(GetFileSystemInfo(path));
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}
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public DateTime GetCreationTimeUtc(FileSystemMetadata info)
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{
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return info.CreationTimeUtc;
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}
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public DateTime GetLastWriteTimeUtc(FileSystemMetadata info)
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{
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return info.LastWriteTimeUtc;
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}
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/// <summary>
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/// Gets the creation time UTC.
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/// </summary>
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/// <param name="info">The info.</param>
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/// <returns>DateTime.</returns>
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public DateTime GetLastWriteTimeUtc(FileSystemInfo info)
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{
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// This could throw an error on some file systems that have dates out of range
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try
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{
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return info.LastWriteTimeUtc;
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}
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catch (Exception ex)
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{
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Logger.ErrorException("Error determining LastAccessTimeUtc for {0}", ex, info.FullName);
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return DateTime.MinValue;
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}
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}
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/// <summary>
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/// Gets the last write time UTC.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <returns>DateTime.</returns>
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public DateTime GetLastWriteTimeUtc(string path)
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{
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return GetLastWriteTimeUtc(GetFileSystemInfo(path));
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}
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/// <summary>
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/// Gets the file stream.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <param name="mode">The mode.</param>
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/// <param name="access">The access.</param>
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/// <param name="share">The share.</param>
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/// <param name="isAsync">if set to <c>true</c> [is asynchronous].</param>
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/// <returns>FileStream.</returns>
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public Stream GetFileStream(string path, FileOpenMode mode, FileAccessMode access, FileShareMode share, bool isAsync = false)
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{
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if (_supportsAsyncFileStreams && isAsync)
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{
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return new FileStream(path, GetFileMode(mode), GetFileAccess(access), GetFileShare(share), 262144, true);
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}
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return new FileStream(path, GetFileMode(mode), GetFileAccess(access), GetFileShare(share), 262144);
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}
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private FileMode GetFileMode(FileOpenMode mode)
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{
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switch (mode)
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{
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case FileOpenMode.Append:
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return FileMode.Append;
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case FileOpenMode.Create:
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return FileMode.Create;
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case FileOpenMode.CreateNew:
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return FileMode.CreateNew;
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case FileOpenMode.Open:
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return FileMode.Open;
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case FileOpenMode.OpenOrCreate:
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return FileMode.OpenOrCreate;
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case FileOpenMode.Truncate:
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return FileMode.Truncate;
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default:
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throw new Exception("Unrecognized FileOpenMode");
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}
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}
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private FileAccess GetFileAccess(FileAccessMode mode)
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{
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var val = (int)mode;
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return (FileAccess)val;
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}
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private FileShare GetFileShare(FileShareMode mode)
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{
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var val = (int)mode;
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return (FileShare)val;
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}
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public void SetHidden(string path, bool isHidden)
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{
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var info = GetFileInfo(path);
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if (info.Exists && info.IsHidden != isHidden)
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{
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if (isHidden)
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{
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File.SetAttributes(path, File.GetAttributes(path) | FileAttributes.Hidden);
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}
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else
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{
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FileAttributes attributes = File.GetAttributes(path);
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attributes = RemoveAttribute(attributes, FileAttributes.Hidden);
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File.SetAttributes(path, attributes);
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}
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}
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}
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private static FileAttributes RemoveAttribute(FileAttributes attributes, FileAttributes attributesToRemove)
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{
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return attributes & ~attributesToRemove;
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}
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/// <summary>
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/// Swaps the files.
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/// </summary>
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/// <param name="file1">The file1.</param>
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/// <param name="file2">The file2.</param>
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public void SwapFiles(string file1, string file2)
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{
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if (string.IsNullOrEmpty(file1))
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{
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throw new ArgumentNullException("file1");
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}
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if (string.IsNullOrEmpty(file2))
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{
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throw new ArgumentNullException("file2");
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}
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var temp1 = Path.GetTempFileName();
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var temp2 = Path.GetTempFileName();
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// Copying over will fail against hidden files
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RemoveHiddenAttribute(file1);
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RemoveHiddenAttribute(file2);
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CopyFile(file1, temp1, true);
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CopyFile(file2, temp2, true);
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CopyFile(temp1, file2, true);
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CopyFile(temp2, file1, true);
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DeleteFile(temp1);
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DeleteFile(temp2);
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}
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/// <summary>
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/// Removes the hidden attribute.
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/// </summary>
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/// <param name="path">The path.</param>
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private void RemoveHiddenAttribute(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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var currentFile = new FileInfo(path);
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// This will fail if the file is hidden
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if (currentFile.Exists)
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{
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if ((currentFile.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden)
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{
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currentFile.Attributes &= ~FileAttributes.Hidden;
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}
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}
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}
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public bool ContainsSubPath(string parentPath, string path)
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{
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if (string.IsNullOrEmpty(parentPath))
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{
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throw new ArgumentNullException("parentPath");
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}
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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return path.IndexOf(parentPath.TrimEnd(Path.DirectorySeparatorChar) + Path.DirectorySeparatorChar, StringComparison.OrdinalIgnoreCase) != -1;
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}
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public bool IsRootPath(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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var parent = Path.GetDirectoryName(path);
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if (!string.IsNullOrEmpty(parent))
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{
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return false;
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}
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return true;
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}
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public string NormalizePath(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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if (path.EndsWith(":\\", StringComparison.OrdinalIgnoreCase))
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{
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return path;
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}
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return path.TrimEnd(Path.DirectorySeparatorChar);
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}
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public string GetFileNameWithoutExtension(FileSystemMetadata info)
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{
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if (info.IsDirectory)
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{
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return info.Name;
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}
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return Path.GetFileNameWithoutExtension(info.FullName);
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}
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public string GetFileNameWithoutExtension(string path)
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{
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return Path.GetFileNameWithoutExtension(path);
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}
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|
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public bool IsPathFile(string path)
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{
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if (string.IsNullOrWhiteSpace(path))
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{
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throw new ArgumentNullException("path");
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}
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|
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// Cannot use Path.IsPathRooted because it returns false under mono when using windows-based paths, e.g. C:\\
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|
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if (path.IndexOf("://", StringComparison.OrdinalIgnoreCase) != -1 &&
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!path.StartsWith("file://", StringComparison.OrdinalIgnoreCase))
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{
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return false;
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}
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return true;
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//return Path.IsPathRooted(path);
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}
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public void DeleteFile(string path)
|
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{
|
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File.Delete(path);
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}
|
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|
|
public void DeleteDirectory(string path, bool recursive)
|
|
{
|
|
Directory.Delete(path, recursive);
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}
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|
|
public void CreateDirectory(string path)
|
|
{
|
|
Directory.CreateDirectory(path);
|
|
}
|
|
|
|
public List<FileSystemMetadata> GetDrives()
|
|
{
|
|
// Only include drives in the ready state or this method could end up being very slow, waiting for drives to timeout
|
|
return DriveInfo.GetDrives().Where(d => d.IsReady).Select(d => new FileSystemMetadata
|
|
{
|
|
Name = GetName(d),
|
|
FullName = d.RootDirectory.FullName,
|
|
IsDirectory = true
|
|
|
|
}).ToList();
|
|
}
|
|
|
|
private string GetName(DriveInfo drive)
|
|
{
|
|
return drive.Name;
|
|
}
|
|
|
|
public IEnumerable<FileSystemMetadata> GetDirectories(string path, bool recursive = false)
|
|
{
|
|
var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
|
|
|
|
return ToMetadata(path, new DirectoryInfo(path).EnumerateDirectories("*", searchOption));
|
|
}
|
|
|
|
public IEnumerable<FileSystemMetadata> GetFiles(string path, bool recursive = false)
|
|
{
|
|
var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
|
|
|
|
return ToMetadata(path, new DirectoryInfo(path).EnumerateFiles("*", searchOption));
|
|
}
|
|
|
|
public IEnumerable<FileSystemMetadata> GetFileSystemEntries(string path, bool recursive = false)
|
|
{
|
|
var directoryInfo = new DirectoryInfo(path);
|
|
var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
|
|
|
|
if (EnableFileSystemRequestConcat)
|
|
{
|
|
return ToMetadata(path, directoryInfo.EnumerateDirectories("*", searchOption))
|
|
.Concat(ToMetadata(path, directoryInfo.EnumerateFiles("*", searchOption)));
|
|
}
|
|
|
|
return ToMetadata(path, directoryInfo.EnumerateFileSystemInfos("*", searchOption));
|
|
}
|
|
|
|
private IEnumerable<FileSystemMetadata> ToMetadata(string parentPath, IEnumerable<FileSystemInfo> infos)
|
|
{
|
|
return infos.Select(i =>
|
|
{
|
|
try
|
|
{
|
|
return GetFileSystemMetadata(i);
|
|
}
|
|
catch (PathTooLongException)
|
|
{
|
|
// Can't log using the FullName because it will throw the PathTooLongExceptiona again
|
|
//Logger.Warn("Path too long: {0}", i.FullName);
|
|
Logger.Warn("File or directory path too long. Parent folder: {0}", parentPath);
|
|
return null;
|
|
}
|
|
|
|
}).Where(i => i != null);
|
|
}
|
|
|
|
public string[] ReadAllLines(string path)
|
|
{
|
|
return File.ReadAllLines(path);
|
|
}
|
|
|
|
public void WriteAllLines(string path, IEnumerable<string> lines)
|
|
{
|
|
File.WriteAllLines(path, lines);
|
|
}
|
|
|
|
public Stream OpenRead(string path)
|
|
{
|
|
return File.OpenRead(path);
|
|
}
|
|
|
|
public void CopyFile(string source, string target, bool overwrite)
|
|
{
|
|
File.Copy(source, target, overwrite);
|
|
}
|
|
|
|
public void MoveFile(string source, string target)
|
|
{
|
|
File.Move(source, target);
|
|
}
|
|
|
|
public void MoveDirectory(string source, string target)
|
|
{
|
|
Directory.Move(source, target);
|
|
}
|
|
|
|
public bool DirectoryExists(string path)
|
|
{
|
|
return Directory.Exists(path);
|
|
}
|
|
|
|
public bool FileExists(string path)
|
|
{
|
|
return File.Exists(path);
|
|
}
|
|
|
|
public string ReadAllText(string path)
|
|
{
|
|
return File.ReadAllText(path);
|
|
}
|
|
|
|
public byte[] ReadAllBytes(string path)
|
|
{
|
|
return File.ReadAllBytes(path);
|
|
}
|
|
|
|
public void WriteAllText(string path, string text, Encoding encoding)
|
|
{
|
|
File.WriteAllText(path, text, encoding);
|
|
}
|
|
|
|
public void WriteAllText(string path, string text)
|
|
{
|
|
File.WriteAllText(path, text);
|
|
}
|
|
|
|
public void WriteAllBytes(string path, byte[] bytes)
|
|
{
|
|
File.WriteAllBytes(path, bytes);
|
|
}
|
|
|
|
public string ReadAllText(string path, Encoding encoding)
|
|
{
|
|
return File.ReadAllText(path, encoding);
|
|
}
|
|
|
|
public IEnumerable<string> GetDirectoryPaths(string path, bool recursive = false)
|
|
{
|
|
var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
|
|
return Directory.EnumerateDirectories(path, "*", searchOption);
|
|
}
|
|
|
|
public IEnumerable<string> GetFilePaths(string path, bool recursive = false)
|
|
{
|
|
var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
|
|
return Directory.EnumerateFiles(path, "*", searchOption);
|
|
}
|
|
|
|
public IEnumerable<string> GetFileSystemEntryPaths(string path, bool recursive = false)
|
|
{
|
|
var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
|
|
return Directory.EnumerateFileSystemEntries(path, "*", searchOption);
|
|
}
|
|
}
|
|
}
|