Split out wordcount and variable filters

build.sh

@@ -17,10 +17,10 @@ then
     INPUT_FILES="$INPUT_FILES $METADATA_FILE"
 fi
 
-PANDOC_ARGS="$INPUT_FILES --template $SCRIPTPATH/main.tex -o $OUTPUT_FILE $ADDITIONAL_ARGS"
+PANDOC_ARGS="$INPUT_FILES --lua-filter=variables.lua --template $SCRIPTPATH/main.tex -o $OUTPUT_FILE $ADDITIONAL_ARGS"
 
 echo "> Building document..."
 pandoc $PANDOC_ARGS
 
 echo "> Running second pass..."
-pandoc --lua-filter=second-pass.lua $PANDOC_ARGS
+pandoc --lua-filter=word-count.lua $PANDOC_ARGS

main.tex

@@ -16,13 +16,13 @@
     \author{Some Author}
     \date{2018-01-01}
 
-    $if(secondpass)$
+    $if(wordcount)$
     \include{header-footer}
     $endif$
 
     \begin{document}
 
-    $if(secondpass)$
+    $if(wordcount)$
     \input{title}
     \tableofcontents
     $endif$

variables.lua

@@ -2,16 +2,6 @@ local vars = {}
 
 local additionalChars = {".", ",", "!", ":", ";"}
 
-function fileExists(name)
-    local f=io.open(name,"r")
-    if f~=nil then io.close(f) return true else return false 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
@@ -24,18 +14,12 @@ local function getVars(meta)
             end
         end
     end
+    return meta
 end
 
 return {
     {
-        Meta = function(meta)
+        Meta = getVars
-            getVars(meta)
-            if fileExists("output.pdf") then
-                meta["wordcount"] = countWords()
-                meta["secondpass"] = true
-            end
-            return meta
-        end,
     },
     {
         Str = function (el)

word-count.lua

@@ -0,0 +1,9 @@
+return {
+    {
+        Meta = function(meta)
+            local rawText = pandoc.pipe("pdftotext", {"output.pdf", "-"}, "")
+            meta["wordcount"] = pandoc.pipe("wc", {"-w"}, rawText)
+            return meta
+        end,
+    },
+}