[Mono-bugs] [Bug 354397] New: System.IO.Directory. GetFileSystemEntries does not parse multiple paths.

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Thu Jan 17 06:13:33 EST 2008


           Summary: System.IO.Directory.GetFileSystemEntries does not parse
                    multiple paths.
           Product: Mono: Class Libraries
           Version: 1.2.6
          Platform: All
               URL: http://www.bookbookbookbook.com/
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: rthijssen at gmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: Third Party Developer/Partner

Created an attachment (id=190822)
 --> (https://bugzilla.novell.com/attachment.cgi?id=190822)
Patched directory.cs

If System.IO.Directory.GetFileSystemEntries is called with a path parameter
containing the PathSeparator and/or more than one path it will throw an

I believe the behaviour should be to parse each path.

For example:
If the path parameter contains the string "/path1;/path2" the output should
contain file system entries for both /path1 and /path2.

The method in System.IO.Directory can be modified as follows to correct this

private static string[] GetFileSystemEntries(string path, string pattern,
FileAttributes mask, FileAttributes attrs)
    if (path == null || pattern == null)
        throw new ArgumentNullException();

    if (pattern == String.Empty)
        return new string[] { };

    if (path.Trim() == "")
        throw new ArgumentException("The Path does not have a valid format");

    if (path.IndexOf(Path.PathSeparator) > -1)
        string[] paths = path.Split(new char[] {Path.PathSeparator},
        string[][] allEntries = new string[paths.Length][];
        int c = 0;
        for (int i = 0; i < paths.Length; i ++)
            allEntries[i] = GetFileSystemEntries(paths[i], pattern, mask,
            c += allEntries[i].Length;
        string[] fileSystemEntries = new string[c];
        int index = 0;
        for (int i = 0; i < paths.Length; i++)
            foreach (string s in allEntries[i])
                fileSystemEntries[index++] = s;
        return fileSystemEntries;

    string wild = Path.Combine(path, pattern);
    string wildpath = Path.GetDirectoryName(wild);
    if (wildpath.IndexOfAny(Path.InvalidPathChars) != -1)
        throw new ArgumentException("Path contains invalid characters");

    if (wildpath.IndexOfAny(Path.InvalidPathChars) != -1)
        if (path.IndexOfAny(SearchPattern.InvalidChars) == -1)
            throw new ArgumentException("Path contains invalid characters",

        throw new ArgumentException("Pattern contains invalid characters",

    MonoIOError error;
    if (!MonoIO.ExistsDirectory(wildpath, out error))
        if (error == MonoIOError.ERROR_SUCCESS)
            MonoIOError file_error;
            if (MonoIO.ExistsFile(wildpath, out file_error))
                return new string[] { wildpath };

        if (error != MonoIOError.ERROR_PATH_NOT_FOUND)
            throw MonoIO.GetException(wildpath, error);

        if (wildpath.IndexOfAny(SearchPattern.WildcardChars) == -1)
            throw new DirectoryNotFoundException("Directory '" + wildpath + "'
not found.");

        if (path.IndexOfAny(SearchPattern.WildcardChars) == -1)
            throw new ArgumentException("Pattern is invalid", "pattern");

        throw new ArgumentException("Path is invalid", "path");

    string path_with_pattern = Path.Combine(wildpath, pattern);
    string[] result = MonoIO.GetFileSystemEntries(path, path_with_pattern,
(int)attrs, (int)mask, out error);
    if (error != 0)
        throw MonoIO.GetException(wildpath, error);

    return result;

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