Re: [PATCH 1/2] Documentation/sphinx: add "nodocs" directive

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On Tue, Jun 19, 2018 at 11:09:42AM +0300, Jani Nikula wrote:
> On Tue, 19 Jun 2018, Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> wrote:
> > On Tue, Jun 19, 2018 at 10:29:20AM +0300, Jani Nikula wrote:
> >> On Tue, 19 Jun 2018, Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> wrote:
> >> > On Mon, Jun 18, 2018 at 11:01:32PM +0300, Jani Nikula wrote:
> >> >> On Mon, 18 Jun 2018, Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> wrote:
> >> >> > When kernel-doc:: specified in .rst document without explicit directives,
> >> >> > it outputs both comment and DOC: sections. If a DOC: section was explictly
> >> >> > included in the same document it will be duplicated. For example, the
> >> >> > output generated for Documentation/core-api/idr.rst [1] has "IDA
> >> >> > description" in the "IDA usage" section and in the middle of the API
> >> >> > reference.
> >> >> >
> >> >> > Addition of "nodocs" directive prevents the duplication without the need to
> >> >> > explicitly define what functions should be include in the API reference.
> >> >> >
> >> >> > [1] https://www.kernel.org/doc/html/v4.17/core-api/idr.html
> >> >> >
> >> >> > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
> >> >> > ---
> >> >> >  Documentation/sphinx/kerneldoc.py | 3 +++
> >> >> >  1 file changed, 3 insertions(+)
> >> >> >
> >> >> > diff --git a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
> >> >> > index fbedcc3..bc5dd05 100644
> >> >> > --- a/Documentation/sphinx/kerneldoc.py
> >> >> > +++ b/Documentation/sphinx/kerneldoc.py
> >> >> > @@ -50,6 +50,7 @@ class KernelDocDirective(Directive):
> >> >> >          'functions': directives.unchanged_required,
> >> >> >          'export': directives.unchanged,
> >> >> >          'internal': directives.unchanged,
> >> >> > +        'nodocs': directives.unchanged,
> >> >> 
> >> >> I'm not convinved this is the prettiest way to achieve what you
> >> >> want. 'nodocs' seems kind of clunky.
> >> >> 
> >> >> I'd suggest supporting 'functions' without option arguments, and turning
> >> >> that into kernel-doc -no-doc-sections.
> >> >
> >> > Do you mean something like this:
> >> 
> >> Yes.
> >> 
> >> >
> >> > diff --git a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
> >> > index fbedcc3..9d0a7f0 100644
> >> > --- a/Documentation/sphinx/kerneldoc.py
> >> > +++ b/Documentation/sphinx/kerneldoc.py
> >> > @@ -47,7 +47,7 @@ class KernelDocDirective(Directive):
> >> >      optional_arguments = 4
> >> >      option_spec = {
> >> >          'doc': directives.unchanged_required,
> >> > -        'functions': directives.unchanged_required,
> >> > +        'functions': directives.unchanged,
> >> >          'export': directives.unchanged,
> >> >          'internal': directives.unchanged,
> >> >      }
> >> > @@ -75,8 +75,12 @@ class KernelDocDirective(Directive):
> >> >          elif 'doc' in self.options:
> >> >              cmd += ['-function', str(self.options.get('doc'))]
> >> >          elif 'functions' in self.options:
> >> > -            for f in str(self.options.get('functions')).split():
> >> > -                cmd += ['-function', f]
> >> > +            functions = self.options.get('functions').split()
> >> 
> >> Does .split() get upset if there's no argument? Or do you get an empty
> >> string if there are no options? I forget.
> >
> > "".split() gives an empty list.
> 
> I tried to say, does self.options.get('functions') return an empty
> string or None if there are no options?

It returns an empty string.
 
> BR,
> Jani.
> 
> 
> >  
> >> BR,
> >> Jani.
> >> 
> >> > +            if functions:
> >> > +                for f in functions:
> >> > +                    cmd += ['-function', f]
> >> > +            else:
> >> > +                cmd += ['-no-doc-sections']
> >> >  
> >> >          for pattern in export_file_patterns:
> >> >              for f in glob.glob(env.config.kerneldoc_srctree + '/' + pattern):
> >> >
> >> >> The usage in patch 2/2 would turn into:
> >> >> 
> >> >> .. kernel-doc:: include/linux/idr.h
> >> >>    :functions:
> >> >> 
> >> >> which I think is much better overall in the rst source, complementing
> >> >> the places where you use :doc:.
> >> >> 
> >> >> BR,
> >> >> Jani.
> >> >> 
> >> >> >      }
> >> >> >      has_content = False
> >> >> >  
> >> >> > @@ -77,6 +78,8 @@ class KernelDocDirective(Directive):
> >> >> >          elif 'functions' in self.options:
> >> >> >              for f in str(self.options.get('functions')).split():
> >> >> >                  cmd += ['-function', f]
> >> >> > +        elif 'nodocs' in self.options:
> >> >> > +            cmd += ['-no-doc-sections']
> >> >> >  
> >> >> >          for pattern in export_file_patterns:
> >> >> >              for f in glob.glob(env.config.kerneldoc_srctree + '/' + pattern):
> >> >> 
> >> >> -- 
> >> >> Jani Nikula, Intel Open Source Graphics Center
> >> >> 
> >> 
> >> -- 
> >> Jani Nikula, Intel Open Source Graphics Center
> >> 
> 
> -- 
> Jani Nikula, Intel Open Source Graphics Center
> 

-- 
Sincerely yours,
Mike.

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