// private
// Does the common validation, searchPattern has already been checked for not-null
static string ValidateDirectoryListing(string path, string searchPattern, out bool stop)
{
Path.Validate(path);
string wild = Path.Combine(path, searchPattern);
string wildpath = Path.GetDirectoryName(wild);
if (wildpath.IndexOfAny(Path.InvalidPathChars) != -1)
{
throw new ArgumentException("Pattern contains invalid characters", "pattern");
}
MonoIOError error;
if (!MonoIO.ExistsDirectory(wildpath, out error))
{
if (error == MonoIOError.ERROR_SUCCESS)
{
MonoIOError file_error;
if (MonoIO.ExistsFile(wildpath, out file_error))
{
stop = true;
return(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", "searchPattern");
}
throw new ArgumentException("Path is invalid", "path");
}
stop = false;
return(wild);
}
public static bool Exists(string path)
{
// For security reasons no exceptions are
// thrown, only false is returned if there is
// any problem with the path or permissions.
// Minimizes what information can be
// discovered by using this method.
if (path == null || path.Trim().Length == 0 ||
path.IndexOfAny(Path.InvalidPathChars) >= 0)
{
return(false);
}
MonoIOError error;
return(MonoIO.ExistsFile(path, out error));
}
public static bool Exists(string path)
{
// For security reasons no exceptions are
// thrown, only false is returned if there is
// any problem with the path or permissions.
// Minimizes what information can be
// discovered by using this method.
if (String.IsNullOrWhiteSpace(path) || path.IndexOfAny(Path.InvalidPathChars) >= 0)
{
return(false);
}
// on Moonlight this does not throw but returns false
if (!SecurityManager.CheckElevatedPermissions())
{
return(false);
}
MonoIOError error;
return(MonoIO.ExistsFile(path, out error));
}
private static string [] GetFileSystemEntries(string path, string searchPattern, FileAttributes mask, FileAttributes attrs)
{
if (path == null || searchPattern == null)
{
throw new ArgumentNullException();
}
if (searchPattern.Length == 0)
{
return new string [] {}
}
;
if (path.Trim().Length == 0)
{
throw new ArgumentException("The Path does not have a valid format");
}
string wild = Path.Combine(path, searchPattern);
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", "path");
}
throw new ArgumentException("Pattern contains invalid characters", "pattern");
}
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", "searchPattern");
}
throw new ArgumentException("Path is invalid", "path");
}
string path_with_pattern = Path.Combine(wildpath, searchPattern);
string [] result = MonoIO.GetFileSystemEntries(path, path_with_pattern, (int)attrs, (int)mask, out error);
if (error != 0)
{
throw MonoIO.GetException(wildpath, error);
}
return(result);
}
