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82 lines
2.5 KiB
C#
82 lines
2.5 KiB
C#
using MediaBrowser.Model.Logging;
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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.IO;
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using System.Linq;
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namespace MediaBrowser.Controller.Providers
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{
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public interface IDirectoryService
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{
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List<FileSystemInfo> GetFileSystemEntries(string path);
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IEnumerable<FileSystemInfo> GetFiles(string path);
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IEnumerable<FileSystemInfo> GetFiles(string path, bool clearCache);
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FileSystemInfo GetFile(string path);
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}
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public class DirectoryService : IDirectoryService
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{
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private readonly ILogger _logger;
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private readonly ConcurrentDictionary<string, List<FileSystemInfo>> _cache = new ConcurrentDictionary<string, List<FileSystemInfo>>(StringComparer.OrdinalIgnoreCase);
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public DirectoryService(ILogger logger)
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{
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_logger = logger;
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}
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public List<FileSystemInfo> GetFileSystemEntries(string path)
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{
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return GetFileSystemEntries(path, false);
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}
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private List<FileSystemInfo> GetFileSystemEntries(string path, bool clearCache)
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{
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List<FileSystemInfo> entries;
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if (clearCache)
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{
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List<FileSystemInfo> removed;
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_cache.TryRemove(path, out removed);
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}
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if (!_cache.TryGetValue(path, out entries))
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{
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//_logger.Debug("Getting files for " + path);
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try
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{
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entries = new DirectoryInfo(path).EnumerateFileSystemInfos("*", SearchOption.TopDirectoryOnly).ToList();
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}
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catch (DirectoryNotFoundException)
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{
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entries = new List<FileSystemInfo>();
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}
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_cache.TryAdd(path, entries);
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}
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return entries;
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}
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public IEnumerable<FileSystemInfo> GetFiles(string path)
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{
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return GetFiles(path, false);
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}
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public IEnumerable<FileSystemInfo> GetFiles(string path, bool clearCache)
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{
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return GetFileSystemEntries(path, clearCache).Where(i => (i.Attributes & FileAttributes.Directory) != FileAttributes.Directory);
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}
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public FileSystemInfo GetFile(string path)
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{
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var directory = Path.GetDirectoryName(path);
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var filename = Path.GetFileName(path);
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return GetFiles(directory).FirstOrDefault(i => string.Equals(i.Name, filename, StringComparison.OrdinalIgnoreCase));
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}
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}
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}
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