826 lines
29 KiB
C#
826 lines
29 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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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.Common.Configuration;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.System;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.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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private readonly string _tempPath;
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private readonly IEnvironmentInfo _environmentInfo;
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private readonly bool _isEnvironmentCaseInsensitive;
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public ManagedFileSystem(
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ILoggerFactory loggerFactory,
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IEnvironmentInfo environmentInfo,
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IApplicationPaths applicationPaths)
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{
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Logger = loggerFactory.CreateLogger("FileSystem");
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_supportsAsyncFileStreams = true;
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_tempPath = applicationPaths.TempDirectory;
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_environmentInfo = environmentInfo;
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SetInvalidFileNameChars(environmentInfo.OperatingSystem == MediaBrowser.Model.System.OperatingSystem.Windows);
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_isEnvironmentCaseInsensitive = environmentInfo.OperatingSystem == MediaBrowser.Model.System.OperatingSystem.Windows;
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}
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public virtual 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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// Be consistent across platforms because the windows server will fail to query network shares that don't follow windows conventions
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// https://referencesource.microsoft.com/#mscorlib/system/io/path.cs
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_invalidFileNameChars = new char[] { '\"', '<', '>', '|', '\0', (char)1, (char)2, (char)3, (char)4, (char)5, (char)6, (char)7, (char)8, (char)9, (char)10, (char)11, (char)12, (char)13, (char)14, (char)15, (char)16, (char)17, (char)18, (char)19, (char)20, (char)21, (char)22, (char)23, (char)24, (char)25, (char)26, (char)27, (char)28, (char)29, (char)30, (char)31, ':', '*', '?', '\\', '/' };
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}
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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="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(nameof(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="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(nameof(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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public virtual string MakeAbsolutePath(string folderPath, string filePath)
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{
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if (string.IsNullOrWhiteSpace(filePath)) return filePath;
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if (filePath.Contains(@"://")) return filePath; //stream
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if (filePath.Length > 3 && filePath[1] == ':' && filePath[2] == '/') return filePath; //absolute local path
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// unc path
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if (filePath.StartsWith("\\\\"))
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{
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return filePath;
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}
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var firstChar = filePath[0];
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if (firstChar == '/')
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{
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// For this we don't really know.
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return filePath;
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}
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if (firstChar == '\\') //relative path
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{
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filePath = filePath.Substring(1);
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}
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try
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{
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string path = System.IO.Path.Combine(folderPath, filePath);
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path = System.IO.Path.GetFullPath(path);
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return path;
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}
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catch (ArgumentException)
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{
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return filePath;
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}
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catch (PathTooLongException)
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{
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return filePath;
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}
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catch (NotSupportedException)
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{
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return filePath;
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}
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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="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 virtual 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(nameof(shortcutPath));
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}
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if (string.IsNullOrEmpty(target))
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{
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throw new ArgumentNullException(nameof(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 virtual FileSystemMetadata GetFileSystemInfo(string 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 virtual FileSystemMetadata GetFileInfo(string 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 virtual FileSystemMetadata GetDirectoryInfo(string 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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result.IsDirectory = info is DirectoryInfo || (info.Attributes & FileAttributes.Directory) == FileAttributes.Directory;
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//if (!result.IsDirectory)
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//{
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// result.IsHidden = (info.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden;
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//}
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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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private static ExtendedFileSystemInfo GetExtendedFileSystemInfo(string path)
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{
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var result = new ExtendedFileSystemInfo();
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var info = new FileInfo(path);
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if (info.Exists)
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{
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result.Exists = true;
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var attributes = info.Attributes;
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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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}
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return result;
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}
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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="ArgumentNullException">filename</exception>
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public virtual string GetValidFilename(string 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, ' ');
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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.LogError(ex, "Error determining CreationTimeUtc for {FullName}", 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 virtual 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 virtual DateTime GetCreationTimeUtc(FileSystemMetadata info)
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{
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return info.CreationTimeUtc;
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}
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public virtual 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.LogError(ex, "Error determining LastAccessTimeUtc for {FullName}", 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 virtual 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 virtual 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 GetFileStream(path, mode, access, share, FileOpenOptions.Asynchronous);
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}
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return GetFileStream(path, mode, access, share, FileOpenOptions.None);
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}
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public virtual Stream GetFileStream(string path, FileOpenMode mode, FileAccessMode access, FileShareMode share, FileOpenOptions fileOpenOptions)
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=> new FileStream(path, GetFileMode(mode), GetFileAccess(access), GetFileShare(share), 4096, GetFileOptions(fileOpenOptions));
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private static FileOptions GetFileOptions(FileOpenOptions mode)
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{
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var val = (int)mode;
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return (FileOptions)val;
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}
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private static 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 static FileAccess GetFileAccess(FileAccessMode mode)
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{
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switch (mode)
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{
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//case FileAccessMode.ReadWrite:
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// return FileAccess.ReadWrite;
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case FileAccessMode.Write:
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return FileAccess.Write;
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case FileAccessMode.Read:
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return FileAccess.Read;
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default:
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throw new Exception("Unrecognized FileAccessMode");
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}
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}
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private static FileShare GetFileShare(FileShareMode mode)
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{
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switch (mode)
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{
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case FileShareMode.ReadWrite:
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return FileShare.ReadWrite;
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case FileShareMode.Write:
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return FileShare.Write;
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case FileShareMode.Read:
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return FileShare.Read;
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case FileShareMode.None:
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return FileShare.None;
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default:
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throw new Exception("Unrecognized FileShareMode");
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}
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}
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public virtual void SetHidden(string path, bool isHidden)
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{
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if (_environmentInfo.OperatingSystem != MediaBrowser.Model.System.OperatingSystem.Windows)
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{
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return;
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}
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var info = GetExtendedFileSystemInfo(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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var 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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public virtual void SetReadOnly(string path, bool isReadOnly)
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{
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if (_environmentInfo.OperatingSystem != MediaBrowser.Model.System.OperatingSystem.Windows)
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{
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return;
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}
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var info = GetExtendedFileSystemInfo(path);
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if (info.Exists && info.IsReadOnly != isReadOnly)
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{
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if (isReadOnly)
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{
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File.SetAttributes(path, File.GetAttributes(path) | FileAttributes.ReadOnly);
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}
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else
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{
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var attributes = File.GetAttributes(path);
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attributes = RemoveAttribute(attributes, FileAttributes.ReadOnly);
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File.SetAttributes(path, attributes);
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}
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}
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}
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public virtual void SetAttributes(string path, bool isHidden, bool isReadOnly)
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{
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if (_environmentInfo.OperatingSystem != MediaBrowser.Model.System.OperatingSystem.Windows)
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{
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return;
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}
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|
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var info = GetExtendedFileSystemInfo(path);
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|
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if (!info.Exists)
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{
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return;
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}
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if (info.IsReadOnly == isReadOnly && info.IsHidden == isHidden)
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{
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return;
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}
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var attributes = File.GetAttributes(path);
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|
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if (isReadOnly)
|
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{
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attributes = attributes | FileAttributes.ReadOnly;
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}
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else
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{
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attributes = RemoveAttribute(attributes, FileAttributes.ReadOnly);
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}
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|
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if (isHidden)
|
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{
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attributes = attributes | FileAttributes.Hidden;
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}
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else
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{
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attributes = RemoveAttribute(attributes, FileAttributes.Hidden);
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}
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File.SetAttributes(path, attributes);
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}
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|
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private static FileAttributes RemoveAttribute(FileAttributes attributes, FileAttributes attributesToRemove)
|
|
{
|
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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 virtual 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(nameof(file1));
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}
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if (string.IsNullOrEmpty(file2))
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{
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throw new ArgumentNullException(nameof(file2));
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}
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var temp1 = Path.Combine(_tempPath, Guid.NewGuid().ToString("N"));
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// Copying over will fail against hidden files
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SetHidden(file1, false);
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SetHidden(file2, false);
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Directory.CreateDirectory(_tempPath);
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File.Copy(file1, temp1, true);
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File.Copy(file2, file1, true);
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File.Copy(temp1, file2, true);
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}
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public virtual 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(nameof(parentPath));
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}
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException(nameof(path));
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}
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var separatorChar = Path.DirectorySeparatorChar;
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return path.IndexOf(parentPath.TrimEnd(separatorChar) + separatorChar, StringComparison.OrdinalIgnoreCase) != -1;
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}
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public virtual 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(nameof(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 virtual 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(nameof(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 virtual bool AreEqual(string path1, string path2)
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{
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if (path1 == null && path2 == null)
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{
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return true;
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}
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if (path1 == null || path2 == null)
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{
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return false;
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}
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return string.Equals(NormalizePath(path1), NormalizePath(path2), StringComparison.OrdinalIgnoreCase);
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}
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public virtual 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 virtual bool IsPathFile(string path)
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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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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 virtual void DeleteFile(string path)
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{
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SetAttributes(path, false, false);
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File.Delete(path);
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}
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public virtual List<FileSystemMetadata> GetDrives()
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{
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// Only include drives in the ready state or this method could end up being very slow, waiting for drives to timeout
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return DriveInfo.GetDrives().Where(d => d.IsReady).Select(d => new FileSystemMetadata
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{
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Name = d.Name,
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FullName = d.RootDirectory.FullName,
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IsDirectory = true
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}).ToList();
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}
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public virtual IEnumerable<FileSystemMetadata> GetDirectories(string path, bool recursive = false)
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{
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var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
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return ToMetadata(new DirectoryInfo(path).EnumerateDirectories("*", searchOption));
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}
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public virtual IEnumerable<FileSystemMetadata> GetFiles(string path, bool recursive = false)
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{
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return GetFiles(path, null, false, recursive);
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}
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public virtual IEnumerable<FileSystemMetadata> GetFiles(string path, IReadOnlyList<string> extensions, bool enableCaseSensitiveExtensions, bool recursive = false)
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{
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var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
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// On linux and osx the search pattern is case sensitive
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// If we're OK with case-sensitivity, and we're only filtering for one extension, then use the native method
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if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions != null && extensions.Count == 1)
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{
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return ToMetadata(new DirectoryInfo(path).EnumerateFiles("*" + extensions[0], searchOption));
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}
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var files = new DirectoryInfo(path).EnumerateFiles("*", searchOption);
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if (extensions != null && extensions.Count > 0)
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{
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files = files.Where(i =>
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{
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var ext = i.Extension;
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if (ext == null)
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{
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return false;
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}
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return extensions.Contains(ext, StringComparer.OrdinalIgnoreCase);
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});
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}
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return ToMetadata(files);
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}
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public virtual IEnumerable<FileSystemMetadata> GetFileSystemEntries(string path, bool recursive = false)
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{
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var directoryInfo = new DirectoryInfo(path);
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var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
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return ToMetadata(directoryInfo.EnumerateDirectories("*", searchOption))
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.Concat(ToMetadata(directoryInfo.EnumerateFiles("*", searchOption)));
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}
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private IEnumerable<FileSystemMetadata> ToMetadata(IEnumerable<FileSystemInfo> infos)
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{
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return infos.Select(GetFileSystemMetadata);
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}
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public virtual IEnumerable<string> GetDirectoryPaths(string path, bool recursive = false)
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{
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var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
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return Directory.EnumerateDirectories(path, "*", searchOption);
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}
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public virtual IEnumerable<string> GetFilePaths(string path, bool recursive = false)
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{
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return GetFilePaths(path, null, false, recursive);
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}
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public virtual IEnumerable<string> GetFilePaths(string path, string[] extensions, bool enableCaseSensitiveExtensions, bool recursive = false)
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{
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var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
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// On linux and osx the search pattern is case sensitive
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// If we're OK with case-sensitivity, and we're only filtering for one extension, then use the native method
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if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions != null && extensions.Length == 1)
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{
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return Directory.EnumerateFiles(path, "*" + extensions[0], searchOption);
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}
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var files = Directory.EnumerateFiles(path, "*", searchOption);
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if (extensions != null && extensions.Length > 0)
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{
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files = files.Where(i =>
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{
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var ext = Path.GetExtension(i);
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if (ext == null)
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{
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return false;
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}
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return extensions.Contains(ext, StringComparer.OrdinalIgnoreCase);
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});
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}
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return files;
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}
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public virtual IEnumerable<string> GetFileSystemEntryPaths(string path, bool recursive = false)
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{
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var searchOption = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
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return Directory.EnumerateFileSystemEntries(path, "*", searchOption);
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}
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public virtual void SetExecutable(string path)
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{
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if (_environmentInfo.OperatingSystem == MediaBrowser.Model.System.OperatingSystem.OSX)
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{
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RunProcess("chmod", "+x \"" + path + "\"", Path.GetDirectoryName(path));
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}
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}
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private static void RunProcess(string path, string args, string workingDirectory)
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{
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using (var process = Process.Start(new ProcessStartInfo
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{
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Arguments = args,
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FileName = path,
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CreateNoWindow = true,
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WorkingDirectory = workingDirectory,
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WindowStyle = ProcessWindowStyle.Normal
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}))
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{
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process.WaitForExit();
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}
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}
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}
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}
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