1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.InteropServices;
namespace MediaBrowser.Controller.IO
{
/// <summary>
/// Provides low level File access that is much faster than the File/Directory api's
/// </summary>
public static class FileData
{
/// <summary>
/// Gets all file system entries within a foler
/// </summary>
/// <param name="path">The path.</param>
/// <param name="logger">The logger.</param>
/// <param name="searchPattern">The search pattern.</param>
/// <param name="includeFiles">if set to <c>true</c> [include files].</param>
/// <param name="includeDirectories">if set to <c>true</c> [include directories].</param>
/// <param name="flattenFolderDepth">The flatten folder depth.</param>
/// <param name="args">The args.</param>
/// <returns>Dictionary{System.StringWIN32_FIND_DATA}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
/// <exception cref="System.IO.IOException">GetFileSystemEntries failed</exception>
public static Dictionary<string, WIN32_FIND_DATA> GetFilteredFileSystemEntries(string path, ILogger logger, string searchPattern = "*", bool includeFiles = true, bool includeDirectories = true, int flattenFolderDepth = 0, ItemResolveArgs args = null)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException();
}
var lpFileName = Path.Combine(path, searchPattern);
WIN32_FIND_DATA lpFindFileData;
var handle = NativeMethods.FindFirstFileEx(lpFileName, FINDEX_INFO_LEVELS.FindExInfoBasic, out lpFindFileData,
FINDEX_SEARCH_OPS.FindExSearchNameMatch, IntPtr.Zero, FindFirstFileExFlags.FIND_FIRST_EX_LARGE_FETCH);
if (handle == IntPtr.Zero)
{
int hr = Marshal.GetLastWin32Error();
if (hr != 2 && hr != 0x12)
{
throw new IOException("GetFileSystemEntries failed");
}
return new Dictionary<string, WIN32_FIND_DATA>(StringComparer.OrdinalIgnoreCase);
}
var dict = new Dictionary<string, WIN32_FIND_DATA>(StringComparer.OrdinalIgnoreCase);
if (FileSystem.IncludeInFindFileOutput(lpFindFileData.cFileName, lpFindFileData.dwFileAttributes, includeFiles, includeDirectories))
{
if (!string.IsNullOrEmpty(lpFindFileData.cFileName))
{
lpFindFileData.Path = Path.Combine(path, lpFindFileData.cFileName);
dict[lpFindFileData.Path] = lpFindFileData;
}
}
while (NativeMethods.FindNextFile(handle, out lpFindFileData) != IntPtr.Zero)
{
// This is the one circumstance where we can completely disregard a file
if (lpFindFileData.IsSystemFile)
{
continue;
}
// Filter out invalid entries
if (lpFindFileData.cFileName.Equals(".", StringComparison.OrdinalIgnoreCase))
{
continue;
}
if (lpFindFileData.cFileName.Equals("..", StringComparison.OrdinalIgnoreCase))
{
continue;
}
lpFindFileData.Path = Path.Combine(path, lpFindFileData.cFileName);
if (FileSystem.IsShortcut(lpFindFileData.Path))
{
var newPath = FileSystem.ResolveShortcut(lpFindFileData.Path);
if (string.IsNullOrWhiteSpace(newPath))
{
//invalid shortcut - could be old or target could just be unavailable
logger.Warn("Encountered invalid shortuct: " + lpFindFileData.Path);
continue;
}
var data = FileSystem.GetFileData(newPath);
if (data.HasValue)
{
lpFindFileData = data.Value;
// Find out if the shortcut is pointing to a directory or file
if (lpFindFileData.IsDirectory)
{
// add to our physical locations
if (args != null)
{
args.AddAdditionalLocation(newPath);
}
}
dict[lpFindFileData.Path] = lpFindFileData;
}
}
else if (flattenFolderDepth > 0 && lpFindFileData.IsDirectory)
{
foreach (var child in GetFilteredFileSystemEntries(lpFindFileData.Path, logger, flattenFolderDepth: flattenFolderDepth - 1))
{
dict[child.Key] = child.Value;
}
}
else
{
dict[lpFindFileData.Path] = lpFindFileData;
}
}
NativeMethods.FindClose(handle);
return dict;
}
}
}
|
