IronRuby.Builtins.RubyIOOps.SysOpen C# (CSharp) Method

        public static int SysOpen(RubyClass/*!*/ self, [NotNull]MutableString path, [Optional]MutableString mode, [Optional]int perm) {
            if (RubyFileOps.DirectoryExists(self.Context, path)) {
                // TODO: What file descriptor should be returned for a directory?
                return -1;
            }

            RubyIO io = new RubyFile(self.Context, path.ToString(), IOModeEnum.Parse(mode));
            int fileDesc = io.GetFileDescriptor();
            io.Close();
            return fileDesc;
        }