Added --default-code-classes option.

This specifies classes to use for indented code blocks.
Thanks to buttock for the (slightly modified) patch.
Resolves Issue #87.

git-svn-id: https://pandoc.googlecode.com/svn/trunk@1637 788f1e2b-df1e-0410-8736-df70ead52e1b

README

@@ -384,6 +384,11 @@ For further documentation, see the `pandoc(1)` man page.
     is specified, *references* is used regardless of the presence
     of this option.
 
+`--default-code-classes`*=classes*
+:   specifies classes to use for indented code blocks--for example,
+    `perl,numberLines` or `haskell`. Multiple classes may be separated
+    by spaces or commas.
+
 `--dump-args`
 :   is intended to make it easier to create wrapper scripts that use
     Pandoc. It causes Pandoc to dump information about the arguments

man/man1/pandoc.1.md

@@ -154,6 +154,11 @@ to Pandoc.  Or use `html2markdown`(1), a wrapper around `pandoc`.
     If `--strict` is specified, *references* is used regardless of the
     presence of this option.
 
+\--default-code-classes*=classes*
+:   Specify classes to use for indented code blocks--for example,
+    `perl,numberLines` or `haskell`. Multiple classes may be separated
+    by spaces or commas.
+
 \--toc, \--table-of-contents
 :   Include an automatically generated table of contents (HTML, markdown,
     RTF) or an instruction to create one (LaTeX, reStructuredText).

src/Text/Pandoc/Readers/Markdown.hs

@@ -394,7 +394,8 @@ codeBlockIndented = do
                              l <- indentedLine
                              return $ b ++ l))
   optional blanklines
-  return $ CodeBlock ("",[],[]) $ stripTrailingNewlines $ concat contents
+  st <- getState
+  return $ CodeBlock ("", stateDefaultCodeClasses st, []) $ stripTrailingNewlines $ concat contents
 
 lhsCodeBlock :: GenParser Char ParserState Block
 lhsCodeBlock = do

src/Text/Pandoc/Shared.hs

@@ -671,7 +671,8 @@ data ParserState = ParserState
       stateSmart           :: Bool,          -- ^ Use smart typography?
       stateLiterateHaskell :: Bool,          -- ^ Treat input as literate haskell
       stateColumns         :: Int,           -- ^ Number of columns in terminal
-      stateHeaderTable     :: [HeaderType]   -- ^ Ordered list of header types used
+      stateHeaderTable     :: [HeaderType],  -- ^ Ordered list of header types used
+      stateDefaultCodeClasses :: [String]    -- ^ Classes to use for indented code blocks
     }
     deriving Show
 
@@ -695,7 +696,8 @@ defaultParserState =
                   stateSmart           = False,
                   stateLiterateHaskell = False,
                   stateColumns         = 80,
-                  stateHeaderTable     = [] }
+                  stateHeaderTable     = [],
+                  stateDefaultCodeClasses = [] }
 
 data HeaderType 
     = SingleHeader Char  -- ^ Single line of characters underneath

src/pandoc.hs

@@ -153,6 +153,7 @@ data Opt = Opt
     , optSanitizeHTML      :: Bool    -- ^ Sanitize HTML
     , optPlugins           :: [Pandoc -> IO Pandoc] -- ^ Plugins to apply
     , optEmailObfuscation  :: ObfuscationMethod
+    , optDefaultCodeClasses :: [String] -- ^ Default classes for indented code blocks
 #ifdef _CITEPROC
     , optBiblioFile        :: String
     , optBiblioFormat      :: String
@@ -189,6 +190,7 @@ defaultOpts = Opt
     , optSanitizeHTML      = False
     , optPlugins           = []
     , optEmailObfuscation  = JavascriptObfuscation
+    , optDefaultCodeClasses = []
 #ifdef _CITEPROC
     , optBiblioFile        = []
     , optBiblioFormat      = []
@@ -312,6 +314,13 @@ options =
                   "none|javascript|references")
                  "" -- "Method for obfuscating email in HTML"
 
+     , Option "" ["default-code-classes"]
+                  (ReqArg
+                   (\arg opt -> return opt { optDefaultCodeClasses = words $
+                                             map (\c -> if c == ',' then ' ' else c) arg })
+                   "STRING")
+                  "" -- "Classes (whitespace- or comma-separated) to use for indented code-blocks"
+
     , Option "" ["toc", "table-of-contents"]
                 (NoArg
                  (\opt -> return opt { optTableOfContents = True }))
@@ -531,6 +540,7 @@ main = do
               , optWrapText          = wrap
               , optSanitizeHTML      = sanitize
               , optEmailObfuscation  = obfuscationMethod
+              , optDefaultCodeClasses = codeBlockClasses
 #ifdef _CITEPROC
               , optBiblioFile         = biblioFile
               , optBiblioFormat       = biblioFormat
@@ -586,7 +596,8 @@ main = do
                               stateSmart           = smart || writerName' `elem`
                                                               ["latex", "context", "man"],
                               stateColumns         = columns,
-                              stateStrict          = strict }
+                              stateStrict          = strict,
+                              stateDefaultCodeClasses = codeBlockClasses }
   let csslink = if null css
                    then ""
                    else concatMap