Renci.SshNet.Sftp.SftpSession.GetCanonicalPath C# (CSharp) Method

        public string GetCanonicalPath(string path)
        {
            var fullPath = GetFullRemotePath(path);

            var canonizedPath = string.Empty;

            var realPathFiles = RequestRealPath(fullPath, true);

            if (realPathFiles != null)
            {
                canonizedPath = realPathFiles.First().Key;
            }

            if (!string.IsNullOrEmpty(canonizedPath))
                return canonizedPath;

            //  Check for special cases
            if (fullPath.EndsWith("/.", StringComparison.OrdinalIgnoreCase) ||
                fullPath.EndsWith("/..", StringComparison.OrdinalIgnoreCase) ||
                fullPath.Equals("/", StringComparison.OrdinalIgnoreCase) ||
                fullPath.IndexOf('/') < 0)
                return fullPath;

            var pathParts = fullPath.Split('/');

            var partialFullPath = string.Join("/", pathParts, 0, pathParts.Length - 1);

            if (string.IsNullOrEmpty(partialFullPath))
                partialFullPath = "/";

            realPathFiles = RequestRealPath(partialFullPath, true);

            if (realPathFiles != null)
            {
                canonizedPath = realPathFiles.First().Key;
            }

            if (string.IsNullOrEmpty(canonizedPath))
            {
                return fullPath;
            }

            var slash = string.Empty;
            if (canonizedPath[canonizedPath.Length - 1] != '/')
                slash = "/";
            return string.Format(CultureInfo.InvariantCulture, "{0}{1}{2}", canonizedPath, slash, pathParts[pathParts.Length - 1]);
        }