Hi guys,
the subject sums it up - mono's (2.10.1 and git) System.IO.Directory.EnumerateFiles() does show
hidden or read-only files; MS .NET does show all files.
The reason for this is that read-only/hidden files do not have the FileAttributes.Normal bit set,
which comes from the Win32 API (my emphasis):
FILE_ATTRIBUTE_NORMAL:
A file that does not have other attributes set.
*This attribute is valid only when used alone.*"
So:
normal -> FileAttributes.Normal
ro -> FileAttributes.ReadOnly
hidden -> FileAttributes.Hidden
hidden/ro -> FileAttributes.Hidden | FileAttributes.ReadOnly
but:
directory/ro -> FileAttributes.Directory | FileAttributes.ReadOnly
(Which seems dumb: 'Normal' is the file type, like 'Directory' or 'Device'; 'ReadOnly', 'Hidden',
'System', 'Encrypted' are additional attributes. But that's beside the point.)
The least intrusive way I can see to fix it is to add these flags (and probably Archived,System,etc
as well) in the various EnumerateFiles/EnumerateFileSystemEntries overloads, like such:
<code>
public static IEnumerable<string> EnumerateFiles (string path, string
searchPattern)
{
EnumerateCheck (path, searchPattern, SearchOption.TopDirectoryOnly);
return EnumerateKind (path, searchPattern, SearchOption.TopDirectoryOnly, FileAttributes.Normal
| FileAttributes.ReadOnly | FileAttributes.Hidden);
}
public static IEnumerable<string> EnumerateFileSystemEntries (string path,
string searchPattern)
{
EnumerateCheck (path, searchPattern, SearchOption.TopDirectoryOnly);
return EnumerateKind (path, searchPattern, SearchOption.TopDirectoryOnly, FileAttributes.Normal
| FileAttributes.ReadOnly | FileAttributes.Hidden | FileAttributes.Directory);
}
</code>
Thoughts?
Cheers,
/uli
--
Ulrich Hertlein
Research and Development mailto:[email protected]
XDT Pty Ltd http://www.xdt.com.au
//
// Create some files in the current directory:
// $ touch normal readonly .hidden
// $ chmod -w readonly
//
// The following program should show all of them.
// $ dmcs Program.cs
// $ mono ./Program.exe
//
namespace DirectoryEnumerateFilesTest
{
using System;
using System.IO;
internal static class Program
{
internal static void Main(string[] args)
{
try
{
string path = ".";
string pattern = "*.*";
foreach (string item in Directory.EnumerateFiles(path, pattern))
{
Console.WriteLine(item);
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
}
}
}
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