Net.Pkcs11Interop.Common.Pkcs11Uri.Parse C# (CSharp) Method

        private void Parse(string uri)
        {
            if (string.IsNullOrEmpty(uri))
                throw new ArgumentNullException("uri");

            // Check URI scheme
            if (!uri.StartsWith(Pkcs11UriSpec.Pk11UriSchemeName + Pkcs11UriSpec.Pk11UriAndPathSeparator, StringComparison.Ordinal))
                throw new Pkcs11UriException("Unknown URI scheme name");

            // Remove URI prefix
            uri = uri.Remove(0, Pkcs11UriSpec.Pk11UriSchemeName.Length + Pkcs11UriSpec.Pk11UriAndPathSeparator.Length);

            // Empty PKCS#11 URI is also valid
            if (uri == string.Empty)
                return;

            // Extract path and query parts
            string path = null;
            string query = null;
            int separatorIndex = uri.IndexOf(Pkcs11UriSpec.Pk11PathAndQuerySeparator);

            if (separatorIndex == -1)
            {
                path = uri;
                query = string.Empty;
            }
            else
            {
                path = uri.Substring(0, separatorIndex);
                query = uri.Substring(separatorIndex + 1);

                if (string.IsNullOrEmpty(query))
                    throw new Pkcs11UriException("Question mark is present in the URI but query component is missing");
            }

            // Parse path attributes
            if (!string.IsNullOrEmpty(path))
            {
                string[] pathAttributes = path.Split(new string[] { Pkcs11UriSpec.Pk11PathAttributesSeparator }, StringSplitOptions.None);
                foreach (string pathAttribute in pathAttributes)
                    ParsePathAttribute(pathAttribute);
            }

            // Parse query attributes
            if (!string.IsNullOrEmpty(query))
            {
                string[] queryAttributes = query.Split(new string[] { Pkcs11UriSpec.Pk11QueryAttributesSeparator }, StringSplitOptions.None);
                foreach (string queryAttribute in queryAttributes)
                    ParseQueryAttribute(queryAttribute);
            }
        }