Re: Code block syntax highlighting

Would ANTLR & their Grammars for Java, SQL, etc. make sense for this?
https://www.antlr.org/
https://github.com/antlr/grammars-v4

All the best,
DaveLaw

On 19/09/2022 10:07, Andreas Reichel wrote:
> Klaus and Team,
>
> thank you for your feedback.
> I have actually figured out something working nicely:
>
> 1) based on Pygments
> 2) use the XSLFO Pygments formatter (can be installed from PIP, the 
> code is fairly simple and straight forward)
> 3) from your XML document containing the Code Block:
> a) iterate through all code blocks
>         b) call Pygments with the XSLFO Formatter and format the block 
> into a temporary XML file (your FO styled codeblock)
>         c) when this succeeded, add to the Code Block node a childnode 
> with the absolute path to this temporary XML file
> 4) amend your XSL file and for each code-block use the XSL:COPY-OF 
> directive to insert the FO formatted content of the temporary XML file 
> into the final PDF directly. (Apply a XSL:CHOOSE, when child exists 
> then XSL:COPY-OF otherwise XSL:VALUE.)
> 5) clean up all the temporary files from step 3)
>
> Caveats:
> a) you need to call Python Pygmentize from Java using 
> ProcessBuilder/Process (and react to failures)
> b) Pygments understanding of the code is limited and the highlighting 
> can be questionable especially for SQL. However, I will use my own SQL 
> Formatter to properly format complex SQL in FO
>
> Cheers!
>