plasTeX 3.0 — A Python Framework for Processing LaTeX Documents

6.8.3 Renderer plugin

For our final example, we build a plugin which brings a new renderer. We will use as an example a renderer targetting Markdown. This is slightly silly since markdown itself is a source code format, and much cruder that LaTeX, but this is only an example.

\begin{forest} for tree={ font=\ttfamily, grow'=0, child anchor=west, parent anchor=south, anchor=west, calign=first, edge path={ \noexpand\path [draw, \forestoption{edge}] (!u.south west) +(7.5pt,0) |- node[fill,inner sep=1.25pt] {} (.child anchor)\forestoption{edge label}; }, before typesetting nodes={ if n=1 {insert before={[,phantom]}} {} }, fit=band, before computing xy={l=15pt}, } [my_renderer_plugin [pyproject.toml] [src [plastex_markdown_renderer [__init__.py] [Renderers [Markdown [__init__.py] [Math.jinja2s] [Sectioning.jinja2s] [Text.jinja2s] [Themes [default [default-layout.jinja2] ] ] ] ]]]] \end{forest}

The ‘__init__.py’ in ‘plastex_markdown_renderer’ is empty but the one in ‘Markdown’ contains 

from plasTeX.Renderers.PageTemplate import Renderer as PTRenderer

class Renderer(PTRenderer):
    """Renderer targetting Markdown using templates."""
    fileExtension = '.md'

which simply declares a page template based renderer which will produce files with extension ‘.md’. The various files with ‘.jinja2s’ extension contain the following code split into three files for convenience: 

name: math displaymath
{{ obj.mathjax_source }}

name: document
{{ obj }}

name: section
# {{ obj.fullTitle }}
{{ obj }}

name: subsection
## {{ obj.fullTitle }}
{{ obj }}

name: par
{{ obj }}

name: emph em
*{{ obj }}*

name: itshape textit
*{{ obj }}*

name: bfseries textbf
**{{ obj }}**

name: ttfamily texttt
`{{ obj }}`

and the file ‘default-layout.jinja2’ simply contains one line saying {{ obj }}. This will allow to run 

plastex --plugins  plastex_markdown_renderer --renderer Markdown test.tex

to render a tiny subset of LaTeX to markdown.