Txt2Tags Reader: Added recognition of macros

pandoc.hs

@@ -65,6 +65,9 @@ import qualified Data.Map as M
 import Data.Yaml (decode)
 import qualified Data.Yaml as Yaml
 import qualified Data.Text as T
+import Control.Applicative ((<$>))
+import Text.Pandoc.Readers.Txt2Tags (getT2TMeta)
+import Data.List (intersperse)
 
 copyrightMessage :: String
 copyrightMessage = "\nCopyright (C) 2006-2014 John MacFarlane\n" ++
@@ -180,7 +183,7 @@ data Opt = Opt
     , optTeXLigatures      :: Bool       -- ^ Use TeX ligatures for quotes/dashes
     , optDefaultImageExtension :: String -- ^ Default image extension
     , optTrace             :: Bool       -- ^ Print debug information
-    , optTrackChanges      :: TrackChanges -- ^ Accept or reject MS Word track-changes. 
+    , optTrackChanges      :: TrackChanges -- ^ Accept or reject MS Word track-changes.
     }
 
 -- | Defaults for command-line options.
@@ -1055,9 +1058,14 @@ main = do
                               else e
                          Right w -> return w
 
-  reader <- case getReader readerName' of
-     Right r  -> return r
-     Left e   -> err 7 e
+  let concatInput = concat (intersperse ", " sources)
+  reader <- if "t2t" == readerName'
+              then (mkStringReader .
+                    readTxt2Tags) <$>
+                      (getT2TMeta concatInput outputFile)
+              else case getReader readerName' of
+                Right r  -> return r
+                Left e   -> err 7 e
 
   let standalone' = standalone || not (isTextFormat writerName') || pdfOutput
 
@@ -1189,11 +1197,11 @@ main = do
                            else return
 
   doc <- case reader of
-          StringReader r-> 
+          StringReader r->
             readSources sources >>=
               handleIncludes' . convertTabs . intercalate "\n" >>=
               r readerOpts
-          ByteStringReader r -> readFiles sources >>= r readerOpts 
+          ByteStringReader r -> readFiles sources >>= r readerOpts
 
 
   let doc0 = M.foldWithKey setMeta doc metadata

src/Text/Pandoc.hs

@@ -63,6 +63,7 @@ module Text.Pandoc
                , writers
                -- * Readers: converting /to/ Pandoc format
                , Reader (..)
+               , mkStringReader
                , readDocx
                , readMarkdown
                , readMediaWiki
@@ -230,7 +231,7 @@ readers = [ ("native"       , StringReader $ \_ s -> return $ readNative s)
            ,("latex"        , mkStringReader readLaTeX)
            ,("haddock"      , mkStringReader readHaddock)
            ,("docx"         , mkBSReader readDocx)
-           ,("t2t"          , mkStringReader readTxt2Tags)
+           ,("t2t"          , mkStringReader readTxt2TagsNoMacros)
            ]
 
 data Writer = PureStringWriter   (WriterOptions -> Pandoc -> String)

src/Text/Pandoc/Readers/Txt2Tags.hs

@@ -12,7 +12,7 @@ import Text.Pandoc.Builder ( Inlines, Blocks, (<>)
 import Text.Pandoc.Definition
 import Text.Pandoc.Options
 import Text.Pandoc.Shared (escapeURI,compactify', compactify'DL)
-import Text.Pandoc.Parsing hiding (space, spaces, uri)
+import Text.Pandoc.Parsing hiding (space, spaces, uri, macro)
 import Control.Applicative ((<$>), (<$), (<*>), (<*), (*>))
 import Data.Char (toLower)
 import Data.List (transpose, intersperse, intercalate)
@@ -23,12 +23,14 @@ import Control.Monad (void, guard, when)
 import Data.Default
 import Control.Monad.Reader (Reader, runReader, asks)
 
-type T2T = Parser String ParserState
-
+import Data.Time.LocalTime (getZonedTime)
+import System.Directory (getModificationTime)
+import Data.Time.Format (formatTime)
+import System.Locale (defaultTimeLocale)
+import System.IO.Error (catchIOError)
 
 type T2T = ParserT String ParserState (Reader T2TMeta)
 
-
 -- | An object for the T2T macros meta information
 -- the contents of each field is simply substituted verbatim into the file
 data  T2TMeta = T2TMeta {
@@ -295,6 +297,7 @@ blockMarkupLine p f s = try (f <$> (string s *> space *> p))
 comment :: Monoid a => T2T a
 comment = try $ do
   atStart
+  notFollowedBy macro
   mempty <$ (char '%' *> anyLine)
 
 -- Inline
@@ -306,6 +309,7 @@ inline :: T2T Inlines
 inline = do
   choice
     [ endline
+    , macro
     , commentLine
     , whitespace
     , url
@@ -405,6 +409,16 @@ imageLink = try $ do
   l <- manyTill (noneOf "\n\r ") (char ']')
   return (B.link l "" body)
 
+macro :: T2T Inlines
+macro = try $ do
+  name <- string "%%" *> oneOfStringsCI (map fst commands)
+  optional (try $ enclosed (char '(') (char ')') anyChar)
+  lookAhead (spaceChar <|> oneOf specialChars <|> newline)
+  maybe (return mempty) (\f -> B.str <$> asks f) (lookup name commands)
+  where
+    commands = [ ("date", date), ("mtime", mtime)
+               , ("infile", infile), ("outfile", outfile)]
+
 -- raw URLs in text are automatically linked
 url :: T2T Inlines
 url = try $ do