From 880ad4dbf26833b8591b0a63f32d4a864d3caa25 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <m.bunkus@linet-services.de>
Date: Wed, 22 Jan 2014 14:45:45 +0100
Subject: [PATCH] Template-Plugin LxLatex: neue Funktion filter_html()

Konvertiert HTML nach LaTeX.
---
 SL/Template/Plugin/LxLatex.pm | 48 +++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/SL/Template/Plugin/LxLatex.pm b/SL/Template/Plugin/LxLatex.pm
index fbbd53c2d..13687fb1e 100644
--- a/SL/Template/Plugin/LxLatex.pm
+++ b/SL/Template/Plugin/LxLatex.pm
@@ -24,4 +24,52 @@ sub filter {
   return $::locale->quote_special_chars('Template/LaTeX', $text);
 }
 
+my %html_replace = (
+  '</p>'      => "\n\n",
+  '<ul>'      => "\\begin{itemize} ",
+  '</ul>'     => "\\end{itemize} ",
+  '<ol>'      => "\\begin{enumerate} ",
+  '</ol>'     => "\\end{enumerate} ",
+  '<li>'      => "\\item ",
+  '</li>'     => " ",
+  '<b>'       => "\\textbf{",
+  '</b>'      => "}",
+  '<strong>'  => "\\textbf{",
+  '</strong>' => "}",
+  '<i>'       => "\\textit{",
+  '</i>'      => "}",
+  '<em>'      => "\\textit{",
+  '</em>'     => "}",
+  '<u>'       => "\\underline{",
+  '</u>'      => "}",
+  '<s>'       => "\\sout{",
+  '</s>'      => "}",
+  '<sub>'     => "\\textsubscript{",
+  '</sub>'    => "}",
+  '<sup>'     => "\\textsuperscript{",
+  '</sup>'    => "}",
+  '<br/>'     => "\\newline ",
+  '<br>'      => "\\newline ",
+);
+
+sub filter_html {
+  my ($self, $text, $args) = @_;
+
+  $text =~ s{ \r+ }{}gx;
+  $text =~ s{ \n+ }{ }gx;
+  $text =~ s{ (?:\&nbsp;|\s)+ }{ }gx;
+
+  my @parts = map {
+    if (substr($_, 0, 1) eq '<') {
+      s{ +}{}g;
+      $html_replace{$_} || '';
+
+    } else {
+      $::locale->quote_special_chars('Template/LaTeX', HTML::Entities::decode_entities($_));
+    }
+  } split(m{(<.*?>)}x, $text);
+
+  return join('', @parts);
+}
+
 return 'SL::Template::Plugin::LxLatex';
-- 
2.20.1