.. index:: single: http_authentication_helpers
.. _http_authentication_helpers/0:

.. rst-class:: right

**category**

``http_authentication_helpers``
===============================

Internal shared helpers for HTTP authentication scheme and parameter syntax.

| **Availability:** 
|    ``logtalk_load(http_core(loader))``

| **Author:** Paulo Moura
| **Version:** 1:0:0
| **Date:** 2026-09-01

| **Compilation flags:**
|    ``static``


| **Extends:**
|    ``public`` :ref:`http_text_helpers <http_text_helpers/0>`
| **Uses:**
|    :ref:`list <list/0>`

| **Remarks:**
|    (none)

| **Inherited public predicates:**
|    (none)

.. contents::
   :local:
   :backlinks: top

Public predicates
-----------------

(no local declarations; see entity ancestors if any)

Protected predicates
--------------------

.. index:: authentication_scheme_codes/3
.. _http_authentication_helpers/0::authentication_scheme_codes/3:

``authentication_scheme_codes/3``
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Splits authentication value codes into the scheme and remaining payload codes at the first HTTP optional whitespace code.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``authentication_scheme_codes(Codes,SchemeCodes,PayloadCodes)``
| **Mode and number of proofs:**
|    ``authentication_scheme_codes(+list(integer),-list(integer),-list(integer))`` - ``one``


------------

.. index:: parse_authentication_parameters/3
.. _http_authentication_helpers/0::parse_authentication_parameters/3:

``parse_authentication_parameters/3``
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Parses comma-separated authentication parameters, using the given domain-error term for invalid syntax and duplicate names.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``parse_authentication_parameters(ErrorDomain,Codes,Pairs)``
| **Mode and number of proofs:**
|    ``parse_authentication_parameters(+nonvar,+list(integer),-list(pair))`` - ``one_or_error``


------------

.. index:: authentication_token_codes/1
.. _http_authentication_helpers/0::authentication_token_codes/1:

``authentication_token_codes/1``
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Succeeds when the nonempty list of codes is an HTTP token.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``authentication_token_codes(Codes)``
| **Mode and number of proofs:**
|    ``authentication_token_codes(+list(integer))`` - ``zero_or_one``


------------

Private predicates
------------------

(no local declarations; see entity ancestors if any)

Operators
---------

(none)