Commit 2c645cd7 authored by Markus Heiser's avatar Markus Heiser Committed by Jonathan Corbet

doc-rst:c-domain: ref-name of a function declaration

Add option 'name' to the "c:function:" directive.  With option 'name'
the ref-name of a function can be modified. E.g.::

    .. c:function:: int ioctl( int fd, int request )
       :name: VIDIOC_LOG_STATUS

The func-name (e.g. ioctl) remains in the output but the ref-name
changed from ``ioctl`` to ``VIDIOC_LOG_STATUS``. The index entry for
this function is also changed to ``VIDIOC_LOG_STATUS`` and the function
can now referenced by::

    :c:func:`VIDIOC_LOG_STATUS`
Signed-off-by: default avatarMarkus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent e8f5c617
......@@ -107,6 +107,35 @@ Here are some specific guidelines for the kernel documentation:
the order as encountered."), having the higher levels the same overall makes
it easier to follow the documents.
the C domain
------------
The `Sphinx C Domain`_ (name c) is suited for documentation of C API. E.g. a
function prototype:
.. code-block:: rst
.. c:function:: int ioctl( int fd, int request )
The C domain of the kernel-doc has some additional features. E.g. you can
*rename* the reference name of a function with a common name like ``open`` or
``ioctl``:
.. code-block:: rst
.. c:function:: int ioctl( int fd, int request )
:name: VIDIOC_LOG_STATUS
The func-name (e.g. ioctl) remains in the output but the ref-name changed from
``ioctl`` to ``VIDIOC_LOG_STATUS``. The index entry for this function is also
changed to ``VIDIOC_LOG_STATUS`` and the function can now referenced by:
.. code-block:: rst
:c:func:`VIDIOC_LOG_STATUS`
list tables
-----------
......
......@@ -7,8 +7,24 @@ u"""
:copyright: Copyright (C) 2016 Markus Heiser
:license: GPL Version 2, June 1991 see Linux/COPYING for details.
List of customizations:
* Add option 'name' to the "c:function:" directive. With option 'name' the
ref-name of a function can be modified. E.g.::
.. c:function:: int ioctl( int fd, int request )
:name: VIDIOC_LOG_STATUS
The func-name (e.g. ioctl) remains in the output but the ref-name changed
from 'ioctl' to 'VIDIOC_LOG_STATUS'. The function is referenced by::
* :c:func:`VIDIOC_LOG_STATUS` or
* :any:`VIDIOC_LOG_STATUS` (``:any:`` needs sphinx 1.3)
"""
from docutils.parsers.rst import directives
from sphinx.domains.c import CObject as Base_CObject
from sphinx.domains.c import CDomain as Base_CDomain
......@@ -29,6 +45,21 @@ class CObject(Base_CObject):
"""
Description of a C language object.
"""
option_spec = {
"name" : directives.unchanged
}
def handle_signature(self, sig, signode):
"""Transform a C signature into RST nodes."""
fullname = super(CObject, self).handle_signature(sig, signode)
if "name" in self.options:
if self.objtype == 'function':
fullname = self.options["name"]
else:
# FIXME: handle :name: value of other declaration types?
pass
return fullname
class CDomain(Base_CDomain):
......
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