Use generic attributes type, not a string, for CodeBlocks.

git-svn-id: https://pandoc.googlecode.com/svn/trunk@1209 788f1e2b-df1e-0410-8736-df70ead52e1b

Text/Pandoc/Definition.hs

@@ -62,11 +62,14 @@ data ListNumberDelim = DefaultDelim
                      | OneParen 
                      | TwoParens deriving (Eq, Show, Read)
 
+-- | Attributes.
+type Attr = (String, [String], [(String, String)])  -- ^ Identifier, classes, key-value pairs
+
 -- | Block element.
 data Block  
     = Plain [Inline]        -- ^ Plain text, not a paragraph
     | Para [Inline]         -- ^ Paragraph
-    | CodeBlock String String -- ^ Code block (literal) with class
+    | CodeBlock Attr String -- ^ Code block (literal) with attributes 
     | RawHtml String        -- ^ Raw HTML block (literal)
     | BlockQuote [Block]    -- ^ Block quote (list of blocks)
     | OrderedList ListAttributes [[Block]] -- ^ Ordered list (attributes

Text/Pandoc/Readers/HTML.hs

@@ -407,7 +407,7 @@ codeBlock = try $ do
     let result''' = if "\n" `isSuffixOf` result''
                        then init result''
                        else result''
-    return $ CodeBlock "" $ decodeCharacterReferences result'''
+    return $ CodeBlock ("",[],[]) $ decodeCharacterReferences result'''
 
 --
 -- block quotes

Text/Pandoc/Readers/LaTeX.hs

@@ -182,14 +182,14 @@ codeBlock1 = try $ do
                               -- leading space
   contents <- manyTill anyChar (try (string "\\end{verbatim}"))
   spaces
-  return $ CodeBlock "" (stripTrailingNewlines contents)
+  return $ CodeBlock ("",[],[]) (stripTrailingNewlines contents)
 
 codeBlock2 = try $ do
   string "\\begin{Verbatim}"  -- used by fancyvrb package
   optional blanklines
   contents <- manyTill anyChar (try (string "\\end{Verbatim}"))
   spaces
-  return $ CodeBlock "" (stripTrailingNewlines contents)
+  return $ CodeBlock ("",[],[]) (stripTrailingNewlines contents)
 
 --
 -- block quotes

Text/Pandoc/Readers/Markdown.hs

@@ -303,25 +303,48 @@ codeBlockDelimiter len = try $ do
               Nothing -> count 3 (char '~') >> many (char '~') >>= 
                          return . (+ 3) . length 
   many spaceChar
-  lang <- option "" classAttributes
+  attr <- option ([],[],[]) attributes
   blankline
-  return (size, lang) 
+  return (size, attr) 
 
-classAttributes = try $ do
+attributes = try $ do
   char '{'
   many spaceChar
-  attrs <- many $ try $  do char '.'
-                            attr <- many1 alphaNum
-                            many spaceChar
-                            return attr
+  attrs <- many (attribute >>~ many spaceChar)
   char '}'
-  return $ unwords attrs
+  let (ids, classes, keyvals) = unzip3 attrs
+  let id = if null ids then "" else head ids
+  return (id, concat classes, concat keyvals)  
+
+attribute = identifierAttr <|> classAttr <|> keyValAttr
+
+identifier = do
+  first <- letter
+  rest <- many alphaNum
+  return (first:rest)
+
+identifierAttr = try $ do
+  char '#'
+  result <- identifier
+  return (result,[],[])
+
+classAttr = try $ do
+  char '.'
+  result <- identifier
+  return ("",[result],[])
+
+keyValAttr = try $ do
+  key <- identifier
+  char '='
+  char '"'
+  val <- manyTill (noneOf "\n") (char '"')
+  return ("",[],[(key,val)])
 
 codeBlockDelimited = try $ do
-  (size, lang) <- codeBlockDelimiter Nothing
+  (size, attr) <- codeBlockDelimiter Nothing
   contents <- manyTill anyLine (codeBlockDelimiter (Just size))
   blanklines
-  return $ CodeBlock lang $ joinWithSep "\n" contents
+  return $ CodeBlock attr $ joinWithSep "\n" contents
 
 codeBlockIndented = do
   contents <- many1 (indentedLine <|> 
@@ -329,7 +352,7 @@ codeBlockIndented = do
                              l <- indentedLine
                              return $ b ++ l))
   optional blanklines
-  return $ CodeBlock "" $ stripTrailingNewlines $ concat contents
+  return $ CodeBlock ("",[],[]) $ stripTrailingNewlines $ concat contents
 
 --
 -- block quotes

Text/Pandoc/Readers/RST.hs

@@ -304,7 +304,7 @@ indentedBlock = do
 codeBlock = try $ do
   codeBlockStart
   result <- indentedBlock
-  return $ CodeBlock "" $ stripTrailingNewlines result
+  return $ CodeBlock ("",[],[]) $ stripTrailingNewlines result
 
 --
 -- raw html

Text/Pandoc/Writers/HTML.hs

@@ -263,8 +263,8 @@ blockToHtml opts (Plain lst) = inlineListToHtml opts lst
 blockToHtml opts (Para lst) = inlineListToHtml opts lst >>= (return . paragraph)
 blockToHtml opts (RawHtml str) = return $ primHtml str
 blockToHtml opts (HorizontalRule) = return $ hr
-blockToHtml opts (CodeBlock lang str) = return $ 
-  pre ! (if null lang then [] else [theclass lang]) $
+blockToHtml opts (CodeBlock (_,classes,_) str) = return $ 
+  pre ! (if null classes then [] else [theclass $ unwords classes]) $
   thecode << (str ++ "\n") -- the final \n for consistency with Markdown.pl
 blockToHtml opts (BlockQuote blocks) =
   -- in S5, treat list in blockquote specially