add and use new filter extension multicol

1 files changed, 47 insertions, 0 deletions

diff --git a/_extensions/js/multicol-nohead/multicol-nohead.lua b/_extensions/js/multicol-nohead/multicol-nohead.lua
new file mode 100644
index 0000000..1fa5d4a
--- /dev/null
+++ b/_extensions/js/multicol-nohead/multicol-nohead.lua
@@ -0,0 +1,47 @@
+-- Render content below header in three columns
+
+local multicol_begin = pandoc.RawBlock('latex', [[
+\begin{multicols}{2}\raggedcolumns
+]])
+local multicol_end = pandoc.RawBlock('latex', [[
+\end{multicols}
+]])
+
+local multicol_now = false
+
+-- TODO: include header level 2 and author paragraph above multicolumn
+function is_author(elem)
+    return elem.t == Para and elem.content[1].text == "Forfatter:"
+end
+
+function multicol_delimit(elem)
+    if multicol_now == true then
+      return {multicol_end, elem, multicol_begin}
+    else
+      multicol_now = true
+      return {elem, multicol_begin}
+    end
+end
+
+function Header(elem)
+  if FORMAT:match 'latex' then
+    if elem.level == 1 then
+      return multicol_delimit(elem)
+    end
+  end
+end
+
+function HorizontalRule(elem)
+  if FORMAT:match 'latex' then
+    return multicol_delimit(elem)
+  end
+end
+
+function Pandoc(doc)
+  if FORMAT:match 'latex' then
+    if multicol_now == true then
+      doc.blocks:insert(multicol_end)
+      return doc
+    end
+  end
+end