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{-
Copyright (C) 2008-2014 John MacFarlane <jgm@berkeley.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- |
Module : Text.Pandoc.Highlighting
Copyright : Copyright (C) 2008-2014 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
Exports functions for syntax highlighting.
-}
module Text.Pandoc.Highlighting ( languages
, languagesByExtension
, highlight
, formatLaTeXInline
, formatLaTeXBlock
, styleToLaTeX
, formatHtmlInline
, formatHtmlBlock
, styleToCss
, pygments
, espresso
, zenburn
, tango
, kate
, monochrome
, haddock
, Style
, fromListingsLanguage
, toListingsLanguage
) where
import Text.Pandoc.Definition
import Text.Pandoc.Shared (safeRead)
import Text.Highlighting.Kate
import Data.List (find)
import Data.Maybe (fromMaybe)
import Data.Char (toLower)
import qualified Data.Map as M
import Control.Applicative ((<|>))
lcLanguages :: [String]
lcLanguages = map (map toLower) languages
highlight :: (FormatOptions -> [SourceLine] -> a) -- ^ Formatter
-> Attr -- ^ Attributes of the CodeBlock
-> String -- ^ Raw contents of the CodeBlock
-> Maybe a -- ^ Maybe the formatted result
highlight formatter (_, classes, keyvals) rawCode =
let firstNum = case safeRead (fromMaybe "1" $ lookup "startFrom" keyvals) of
Just n -> n
Nothing -> 1
fmtOpts = defaultFormatOpts{
startNumber = firstNum,
numberLines = any (`elem`
["number","numberLines", "number-lines"]) classes }
lcclasses = map (map toLower) classes
in case find (`elem` lcLanguages) lcclasses of
Nothing -> Nothing
Just language -> Just
$ formatter fmtOpts{ codeClasses = [language],
containerClasses = classes }
$ highlightAs language rawCode
-- Functions for correlating latex listings package's language names
-- with highlighting-kate language names:
langToListingsMap :: M.Map String String
langToListingsMap = M.fromList langsList
listingsToLangMap :: M.Map String String
listingsToLangMap = M.fromList $ map switch langsList
where switch (a,b) = (b,a)
langsList :: [(String, String)]
langsList = [("ada","Ada")
,("java","Java")
,("prolog","Prolog")
,("python","Python")
,("gnuassembler","Assembler")
,("commonlisp","Lisp")
,("r","R")
,("awk","Awk")
,("bash","bash")
,("makefile","make")
,("c","C")
,("matlab","Matlab")
,("ruby","Ruby")
,("cpp","C++")
,("ocaml","Caml")
,("modula2","Modula-2")
,("sql","SQL")
,("eiffel","Eiffel")
,("tcl","tcl")
,("erlang","erlang")
,("verilog","Verilog")
,("fortran","Fortran")
,("vhdl","VHDL")
,("pascal","Pascal")
,("perl","Perl")
,("xml","XML")
,("haskell","Haskell")
,("php","PHP")
,("xslt","XSLT")
,("html","HTML")
]
listingsLangs :: [String]
listingsLangs = ["Ada","Java","Prolog","Algol","JVMIS","Promela",
"Ant","ksh","Python","Assembler","Lisp","R","Awk",
"Logo","Reduce","bash","make","Rexx","Basic",
"Mathematica","RSL","C","Matlab","Ruby","C++",
"Mercury","S","Caml","MetaPost","SAS","Clean",
"Miranda","Scilab","Cobol","Mizar","sh","Comal",
"ML","SHELXL","csh","Modula-2","Simula","Delphi",
"MuPAD","SQL","Eiffel","NASTRAN","tcl","Elan",
"Oberon-2","TeX","erlang","OCL","VBScript","Euphoria",
"Octave","Verilog","Fortran","Oz","VHDL","GCL",
"Pascal","VRML","Gnuplot","Perl","XML","Haskell",
"PHP","XSLT","HTML","PL/I"]
-- Determine listings language name from highlighting-kate language name.
toListingsLanguage :: String -> Maybe String
toListingsLanguage lang = (if lang `elem` listingsLangs
then Just lang
else Nothing) <|>
M.lookup (map toLower lang) langToListingsMap
-- Determine highlighting-kate language name from listings language name.
fromListingsLanguage :: String -> Maybe String
fromListingsLanguage lang = M.lookup lang listingsToLangMap
|
