[Mediawiki-l] Text Flowing Around Graphviz Diagrams

[Jan Steinman]

I've updated my Graphviz extension hacks. It now includes two new entry 
points that cause an image to be text flowed left or right without 
using tables. See the Annotated examples at the link below. (The text 
flow example is the last one on that page.)

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I wanted to use other layout engines besides dot(1), so I hacked 
Graphviz.php to allow a Unix-style interpreter specification for the 
other rendering engines in Graphviz. This is backwards compatible 
(since it is a legal dot comment) and avoids coming up with new syntax.

The interpreter spec must immediately follow the opening tag: 
"<graphviz>#!/sw/bin/neato" for example. I explicitly check for allowed 
rendering engines to avoid script injection security issues.

Extension at: <http://www.Bytesmiths.com/InfoArk/Graphviz.php.gz>

Annotated examples at: <http://www.IslandSeeds.org/wiki/Test:Graphviz>

Enjoy!

PS: It would be nice to have "out of band" communications with 
extensions, like <graphviz engine="neato">. It could simply bundle up 
everything it finds in the tag into an associative array. This would be 
very useful (for example) in text-wrapping, since so many extensions 
seem to generate images. (<graphviz style="float:right">, for example)

::::  We will see in some subsequent charts that we probably have 
reached peak oil. -- US Congressman Roscoe Bartlett, in presentation to 
the US Congress, 15 March 2005
:::: Jan Steinman "http://www.IslandSeeds.org"