From 055c7a343fac6e5836db1738aca74563c003368f Mon Sep 17 00:00:00 2001
From: RunasSudo <runassudo@yingtongli.me>
Date: Tue, 30 Nov 2021 19:38:14 +1100
Subject: [PATCH] Allow customising LaTeX preamble

---
 legalmd/__main__.py       | 1 +
 legalmd/latex_renderer.py | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/legalmd/__main__.py b/legalmd/__main__.py
index b987840..4d06852 100644
--- a/legalmd/__main__.py
+++ b/legalmd/__main__.py
@@ -42,6 +42,7 @@ with renderer_cls() as renderer:
 	
 	doc.lmarg = rawdoc.get('lmarg', '1cm')
 	doc.contentsmarg = rawdoc.get('contentsmarg', '1cm')
+	doc.latexpre = rawdoc.get('latexpre', '')
 	
 	doc.full_label_map = {}
 	
diff --git a/legalmd/latex_renderer.py b/legalmd/latex_renderer.py
index 43305a0..c6204f9 100644
--- a/legalmd/latex_renderer.py
+++ b/legalmd/latex_renderer.py
@@ -278,6 +278,9 @@ class LaTeXRenderer(mistletoe.latex_renderer.LaTeXRenderer):
 		
 		template = r'''
 \documentclass[a4paper,12pt]{article}
+\def\LegalEndPreamble{}
+\def\LegalBeforeContent{}
+<latexpre>
 <packages>
 % Configuration
 \usepackage[top=1.25cm,bottom=1.13cm,inner=2cm,outer=2cm,headheight=8pt,headsep=0.5cm,footskip=1cm,includehead,includefoot]{geometry}
@@ -311,12 +314,14 @@ class LaTeXRenderer(mistletoe.latex_renderer.LaTeXRenderer):
 \setmathfont[RawFeature=-tlig]{TeX Gyre Termes Math}
 \newfontfamily{\freeserif}{FreeSerif}[RawFeature=-tlig]
 \renewcommand{\familydefault}{\sfdefault}
+\LegalEndPreamble
 % Front matter
 \begin{document}
 \fancypagestyle{plain}{\fancyhf{}}
 \pagestyle{fancy}\fancyhf{}\renewcommand{\headrulewidth}{0pt}
 \lhead{\textsf{\scriptsize <title>}}\rhead{\textsf{\scriptsize <author>}}\lfoot{\textsf{\scriptsize <footer>}}\rfoot{\textsf{\scriptsize\thepage}}
 \pagenumbering{roman}
+\LegalBeforeContent
 {\bfseries\centering\fontsize{13pt}{15pt}\selectfont\uppercase{<title>}\par INDEX\par}
 \makeatletter\@starttoc{toc}\makeatother
 \newpage\pagenumbering{arabic}
@@ -326,6 +331,7 @@ class LaTeXRenderer(mistletoe.latex_renderer.LaTeXRenderer):
 		self.footnotes.update(token.footnotes)
 		return format(template,
 			inner=self.render_inner(token),
+			latexpre=token.latexpre,
 			packages=self.render_packages(),
 			title=self.render_raw_text(mistletoe.span_token.RawText(token.title)),
 			author=self.render_raw_text(mistletoe.span_token.RawText(token.author)),