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using MediaBrowser.Controller.Library;
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using MediaBrowser.Model.Logging;
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using System;
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using System.Collections.Generic;
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using System.IO;
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namespace MediaBrowser.Controller.IO
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{
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/// <summary>
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/// Provides low level File access that is much faster than the File/Directory api's
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/// </summary>
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public static class FileData
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{
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/// <summary>
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/// Gets the filtered file system entries.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <param name="logger">The logger.</param>
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/// <param name="searchPattern">The search pattern.</param>
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/// <param name="flattenFolderDepth">The flatten folder depth.</param>
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/// <param name="resolveShortcuts">if set to <c>true</c> [resolve shortcuts].</param>
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/// <param name="args">The args.</param>
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/// <returns>Dictionary{System.StringFileSystemInfo}.</returns>
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/// <exception cref="System.ArgumentNullException">path</exception>
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public static Dictionary<string, FileSystemInfo> GetFilteredFileSystemEntries(string path, ILogger logger, string searchPattern = "*", int flattenFolderDepth = 0, bool resolveShortcuts = true, ItemResolveArgs args = null)
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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 dict = new Dictionary<string, FileSystemInfo>(StringComparer.OrdinalIgnoreCase);
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var entries = new DirectoryInfo(path).EnumerateFileSystemInfos(searchPattern, SearchOption.TopDirectoryOnly);
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foreach (var entry in entries)
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{
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var isDirectory = entry.Attributes.HasFlag(FileAttributes.Directory);
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if (resolveShortcuts && FileSystem.IsShortcut(entry.FullName))
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{
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var newPath = FileSystem.ResolveShortcut(entry.FullName);
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if (string.IsNullOrWhiteSpace(newPath))
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{
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//invalid shortcut - could be old or target could just be unavailable
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logger.Warn("Encountered invalid shortcut: " + entry.FullName);
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continue;
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}
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var data = FileSystem.GetFileSystemInfo(newPath);
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dict[data.FullName] = data;
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}
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else if (flattenFolderDepth > 0 && isDirectory)
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{
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foreach (var child in GetFilteredFileSystemEntries(entry.FullName, logger, flattenFolderDepth: flattenFolderDepth - 1, resolveShortcuts: resolveShortcuts))
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{
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dict[child.Key] = child.Value;
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}
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}
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else
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{
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dict[entry.FullName] = entry;
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}
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}
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return dict;
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}
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}
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}
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