From 03ede3e31263d6a4db1d726022d1e0bf22363540 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sun, 4 Dec 2016 23:29:22 +0100
Subject: RST reader: handle code, literal, number-lines, class, name for
 include.

---
 src/Text/Pandoc/Readers/RST.hs | 57 ++++++++++++++++++++----------------------
 1 file changed, 27 insertions(+), 30 deletions(-)

(limited to 'src')

diff --git a/src/Text/Pandoc/Readers/RST.hs b/src/Text/Pandoc/Readers/RST.hs
index 1abf7046b..5185a1149 100644
--- a/src/Text/Pandoc/Readers/RST.hs
+++ b/src/Text/Pandoc/Readers/RST.hs
@@ -41,7 +41,7 @@ import qualified Text.Pandoc.UTF8 as UTF8
 import Control.Monad ( when, liftM, guard, mzero )
 import Data.List ( findIndex, intercalate,
                    transpose, sort, deleteFirstsBy, isSuffixOf , nub, union)
-import Data.Maybe (fromMaybe)
+import Data.Maybe (fromMaybe, isJust)
 import qualified Data.Map as M
 import Text.Printf ( printf )
 import Text.Pandoc.Builder (Inlines, Blocks, trimInlines)
@@ -402,28 +402,11 @@ blockQuote = do
   return $ B.blockQuote contents
 
 {-
-From RST docs:
-The following options are recognized:
-
-[x] start-line : integer
-[x] end-line : integer
-[ ] start-after : text to find in the external data file
-   Only the content after the first occurrence of the specified text will be included.
-[ ] end-before : text to find in the external data file
-    Only the content before the first occurrence of the specified text (but after any after text) will be included.
-  Combining start/end-line and start-after/end-before is possible. The text markers will be searched in the specified lines (further limiting the included content).
-[ ] literal : flag (empty)
-    The entire included text is inserted into the document as a single literal block.
-[ ] code : formal language (optional)
-   The argument and the content of the included file are passed to the code directive (useful for program listings). (New in Docutils 0.9)
-[ ] number-lines : [start line number]
-    Precede every code line with a line number. The optional argument is the number of the first line (defaut 1). Works only with code or literal. (New in Docutils 0.9)
-[ ] encoding : name of text encoding
-The text encoding of the external data file. Defaults to the document's input_encoding.
-[ ] tab-width : integer
-Number of spaces for hard tab expansion. A negative value prevents expansion of hard tabs. Defaults to the tab_width configuration setting.
-[ ] class (common option) - with code or literal
-[ ] name (common option) - with code or literal
+Unsupported options for include:
+tab-width
+encoding
+start-after: text to find
+end-before: text to find
 -}
 
 include :: PandocMonad m => RSTParser m Blocks
@@ -461,13 +444,27 @@ include = try $ do
   let contents' = unlines $ drop (startLine' - 1)
                           $ take (endLine' - 1)
                           $ contentLines
-  setPosition $ newPos f 1 1
-  setInput contents'
-  bs <- optional blanklines >> (mconcat <$> many block)
-  setInput oldInput
-  setPosition oldPos
-  updateState $ \s -> s{ stateContainers = tail $ stateContainers s }
-  return bs
+  case lookup "code" fields of
+       Just lang -> do
+         let numberLines = lookup "number-lines" fields
+         let classes = trimr lang : ["numberLines" | isJust numberLines] ++
+                          maybe [] words (lookup "class" fields)
+         let kvs = maybe [] (\n -> [("startFrom", trimr n)]) numberLines
+         let ident = maybe "" trimr $ lookup "name" fields
+         let attribs = (ident, classes, kvs)
+         return $ B.codeBlockWith attribs contents'
+       Nothing   -> case lookup "literal" fields of
+                         Just _  -> return $ B.rawBlock "rst" contents'
+                         Nothing -> do
+                           setPosition $ newPos f 1 1
+                           setInput contents'
+                           bs <- optional blanklines >>
+                                  (mconcat <$> many block)
+                           setInput oldInput
+                           setPosition oldPos
+                           updateState $ \s -> s{ stateContainers =
+                                         tail $ stateContainers s }
+                           return bs
 
 readFileLazy' :: PandocMonad m => FilePath -> m (Either PandocError String)
 readFileLazy' f = catchError ((Right . UTF8.toStringLazy) <$> readFileLazy f) $
-- 
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