Re: [PATCH] docs-rst: automatically convert Graphviz and SVG images

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Em Thu,  2 Mar 2017 16:40:02 +0100
Daniel Vetter <daniel.vetter@xxxxxxxx> escreveu:

> From: Markus Heiser <markus.heiser@xxxxxxxxxxx>
> 
> This patch brings scalable figure, image handling and a concept to
> embed *render* markups:
> 
> * DOT (http://www.graphviz.org)
> * SVG
> 
> For image handling use the 'image' replacement::
> 
>     .. kernel-image::  svg_image.svg
>        :alt:    simple SVG image
> 
> For figure handling use the 'figure' replacement::
> 
>     .. kernel-figure::  svg_image.svg
>        :alt:    simple SVG image
> 
>        SVG image example
> 
> Embed *render* markups (or languages) like Graphviz's **DOT** is
> provided by the *render* directive.::
> 
>   .. kernel-render:: DOT
>      :alt: foobar digraph
>      :caption: Embedded **DOT** (Graphviz) code.
> 
>      digraph foo {
>       "bar" -> "baz";
>      }
> 
> The *render* directive is a concept to integrate *render* markups and
> languages, yet supported markups:
> 
> * DOT: render embedded Graphviz's **DOT**
> * SVG: render embedded Scalable Vector Graphics (**SVG**)
> 
> v2: s/DOC/DOT/ in a few places (by Daniel).
> 
> v3: Simplify stuff a bit (by Daniel):
> 
> - Remove path detection and setup/check code for that. In
>   Documentation/media/Makefile we already simply use these tools,
>   better to have one consolidated check if we want/need one. Also
>   remove the convertsvg support, we require ImageMagick's convert
>   already in the doc build, no need for a 2nd fallback.
> 
> - Use sphinx for depency tracking, remove hand-rolled version.
> 
> - Forward stderr from dot and convert, otherwise debugging issues with
>   the diagrams is impossible.
> 
> v4: Only sphinx 1.4 (released in Mar 2016) has patches.Figure.
> Implement Markus suggestion for backwards compatability with earlier
> releases. Laurent reported this, running sphinx 1.3. Solution entirely
> untested.
> 
> v5: Use an explicit version check (suggested by Laurent).

Found another issue on the patch. The HTML output is pointing to the
wrong place: instead of using a relative patch, it is keeping 
an absolute one.

This is what it produced from Documentation/media/uapi/v4l/dev-subdev.rst:

<div class="figure align-center" id="id2">
<img alt="pipeline.dot" src="/d00/kernel/Documentation/output/media/uapi/v4l/pipeline.svg" /><p class="caption"><span class="caption-text">Image Format Negotiation on Pipelines</span></p>
<div class="legend">
High quality and high speed pipeline configuration</div>
</div>

There, the "src=" is pointing to the full patch, with doesn't work, as
my html server uses a different patch to find the file. It should,
instead, use a patch relative to the place where the html file is
stored, e. g. in this case, either:
	./pipeline.svg
or just:
	pipeline.svg

Regards,
Mauro
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