Make metadata accessible from templates

second-pass.lua

@@ -1,23 +1,41 @@
+local vars = {}
+
 function fileExists(name)
     local f=io.open(name,"r")
     if f~=nil then io.close(f) return true else return false end
- end
-
+end
 
 local function countWords()
     local rawText = pandoc.pipe("pdftotext", {"output.pdf", "-"}, "")
     return pandoc.pipe("wc", {"-w"}, rawText)
 end
 
+local function getVars(meta)
+    for k, v in pairs(meta) do
+        if v.t == 'MetaInlines' then
+            vars["$" .. k .. "$"] = v
+        end
+    end
+end
 
 return {
     {
         Meta = function(meta)
+            getVars(meta)
             if fileExists("output.pdf") then
                 meta["wordcount"] = countWords()
                 meta["secondpass"] = true
             end
             return meta
         end,
+    },
+    {
+        Str = function (el)
+            if vars[el.text] then
+                return pandoc.Span(vars[el.text])
+            else
+                return el
+            end
+        end
     }
 }