39f6af5de4
The bird tracks are added in the highlighting module. This makes sense, because the kate's haskell highlighter is much better than the literateHaskell highlighter. git-svn-id: https://pandoc.googlecode.com/svn/trunk@1620 788f1e2b-df1e-0410-8736-df70ead52e1b
71 lines
2.8 KiB
Haskell
71 lines
2.8 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-
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Copyright (C) 2008 John MacFarlane <jgm@berkeley.edu>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-}
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{- |
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Module : Text.Pandoc.Highlighting
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Copyright : Copyright (C) 2008 John MacFarlane
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License : GNU GPL, version 2 or above
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Maintainer : John MacFarlane <jgm@berkeley.edu>
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Stability : alpha
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Portability : portable
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Exports functions for syntax highlighting.
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-}
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module Text.Pandoc.Highlighting ( languages, highlightHtml, defaultHighlightingCss, languagesByExtension ) where
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import Text.XHtml
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import Text.Pandoc.Definition
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#ifdef _HIGHLIGHTING
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import Text.Highlighting.Kate ( languages, highlightAs, formatAsXHtml, FormatOption (..), defaultHighlightingCss, languagesByExtension )
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import Data.List (find, lookup)
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import Data.Maybe (fromMaybe)
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import Data.Char (toLower)
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highlightHtml :: Attr -> String -> Either String Html
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highlightHtml (_, classes, keyvals) rawCode =
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let firstNum = read $ fromMaybe "1" $ lookup "startFrom" keyvals
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fmtOpts = [OptNumberFrom firstNum] ++
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case find (`elem` ["number","numberLines","number-lines"]) classes of
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Nothing -> []
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Just _ -> [OptNumberLines]
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addBirdTracks = "literate" `elem` classes
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lcLanguages = map (map toLower) languages
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in case find (\c -> (map toLower c) `elem` lcLanguages) classes of
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Nothing -> Left "Unknown or unsupported language"
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Just language -> case highlightAs language rawCode of
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Left err -> Left err
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Right hl -> Right $ formatAsXHtml fmtOpts language $
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if addBirdTracks
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then map ((["Special"],"> "):) hl
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else hl
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#else
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defaultHighlightingCss :: String
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defaultHighlightingCss = ""
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languages :: [String]
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languages = []
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languagesByExtension :: String -> [String]
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languagesByExtension _ = []
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highlightHtml :: Attr -> String -> Either String Html
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highlightHtml _ _ = Left "Pandoc was not compiled with support for highlighting"
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#endif
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