77 lines
2.4 KiB
C#
77 lines
2.4 KiB
C#
#pragma warning disable CS1591
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Linq;
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using MediaBrowser.Model.IO;
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namespace MediaBrowser.Controller.Providers
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{
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public class DirectoryService : IDirectoryService
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{
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private readonly IFileSystem _fileSystem;
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private readonly ConcurrentDictionary<string, FileSystemMetadata[]> _cache = new ConcurrentDictionary<string, FileSystemMetadata[]>(StringComparer.OrdinalIgnoreCase);
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private readonly ConcurrentDictionary<string, FileSystemMetadata> _fileCache = new ConcurrentDictionary<string, FileSystemMetadata>(StringComparer.OrdinalIgnoreCase);
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private readonly ConcurrentDictionary<string, List<string>> _filePathCache = new ConcurrentDictionary<string, List<string>>(StringComparer.OrdinalIgnoreCase);
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public DirectoryService(IFileSystem fileSystem)
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{
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_fileSystem = fileSystem;
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}
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public FileSystemMetadata[] GetFileSystemEntries(string path)
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{
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return _cache.GetOrAdd(path, p => _fileSystem.GetFileSystemEntries(p).ToArray());
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}
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public List<FileSystemMetadata> GetFiles(string path)
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{
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var list = new List<FileSystemMetadata>();
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var items = GetFileSystemEntries(path);
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foreach (var item in items)
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{
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if (!item.IsDirectory)
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{
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list.Add(item);
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}
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}
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return list;
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}
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public FileSystemMetadata GetFile(string path)
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{
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var result = _fileCache.GetOrAdd(path, p =>
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{
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var file = _fileSystem.GetFileInfo(p);
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return file != null && file.Exists ? file : null;
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});
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if (result == null)
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{
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// lets not store null results in the cache
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_fileCache.TryRemove(path, out _);
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}
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return result;
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}
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public IReadOnlyList<string> GetFilePaths(string path)
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=> GetFilePaths(path, false);
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public IReadOnlyList<string> GetFilePaths(string path, bool clearCache)
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{
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if (clearCache)
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{
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_filePathCache.TryRemove(path, out _);
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}
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return _filePathCache.GetOrAdd(path, p => _fileSystem.GetFilePaths(p).ToList());
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}
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}
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}
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