1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
{-# LANGUAGE NoImplicitPrelude #-}
{- |
Module : Text.Pandoc.Highlighting
Copyright : Copyright (C) 2008-2019 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 ( highlightingStyles
, languages
, languagesByExtension
, highlight
, formatLaTeXInline
, formatLaTeXBlock
, styleToLaTeX
, formatHtmlInline
, formatHtmlBlock
, styleToCss
, pygments
, espresso
, zenburn
, tango
, kate
, monochrome
, breezeDark
, haddock
, Style
, fromListingsLanguage
, toListingsLanguage
) where
import Prelude
import Control.Monad
import Data.Char (toLower)
import qualified Data.Map as M
import Data.Maybe (fromMaybe)
import qualified Data.Text as T
import Skylighting
import Text.Pandoc.Definition
import Text.Pandoc.Shared (safeRead)
highlightingStyles :: [(String, Style)]
highlightingStyles =
[("pygments", pygments),
("tango", tango),
("espresso", espresso),
("zenburn", zenburn),
("kate", kate),
("monochrome", monochrome),
("breezedark", breezeDark),
("haddock", haddock)]
languages :: [String]
languages = [T.unpack (T.toLower (sName s)) | s <- M.elems defaultSyntaxMap]
languagesByExtension :: String -> [String]
languagesByExtension ext =
[T.unpack (T.toLower (sName s)) | s <- syntaxesByExtension defaultSyntaxMap ext]
highlight :: SyntaxMap
-> (FormatOptions -> [SourceLine] -> a) -- ^ Formatter
-> Attr -- ^ Attributes of the CodeBlock
-> String -- ^ Raw contents of the CodeBlock
-> Either String a
highlight syntaxmap formatter (ident, classes, keyvals) rawCode =
let firstNum = fromMaybe 1 (safeRead (fromMaybe "1" $ lookup "startFrom" keyvals))
fmtOpts = defaultFormatOpts{
startNumber = firstNum,
lineAnchors = any (`elem`
["line-anchors", "lineAnchors"]) classes,
numberLines = any (`elem`
["number","numberLines", "number-lines"]) classes,
lineIdPrefix = if null ident
then mempty
else T.pack (ident ++ "-") }
tokenizeOpts = TokenizerConfig{ syntaxMap = syntaxmap
, traceOutput = False }
classes' = map T.pack classes
rawCode' = T.pack rawCode
in case msum (map (`lookupSyntax` syntaxmap) classes') of
Nothing
| numberLines fmtOpts -> Right
$ formatter fmtOpts{ codeClasses = [],
containerClasses = classes' }
$ map (\ln -> [(NormalTok, ln)])
$ T.lines rawCode'
| otherwise -> Left ""
Just syntax ->
formatter fmtOpts{ codeClasses =
[T.toLower (sShortname syntax)],
containerClasses = classes' } <$>
tokenize tokenizeOpts syntax rawCode'
-- Functions for correlating latex listings package's language names
-- with skylighting 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 =
[("abap","ABAP"),
("acm","ACM"),
("acmscript","ACMscript"),
("acsl","ACSL"),
("ada","Ada"),
("algol","Algol"),
("ant","Ant"),
("assembler","Assembler"),
("gnuassembler","Assembler"),
("awk","Awk"),
("bash","bash"),
("monobasic","Basic"),
("purebasic","Basic"),
("c","C"),
("cpp","C++"),
("c++","C++"),
("ocaml","Caml"),
("cil","CIL"),
("clean","Clean"),
("cobol","Cobol"),
("comal80","Comal80"),
("command.com","command.com"),
("comsol","Comsol"),
("csh","csh"),
("delphi","Delphi"),
("elan","Elan"),
("erlang","erlang"),
("euphoria","Euphoria"),
("fortran","Fortran"),
("gap","GAP"),
("gcl","GCL"),
("gnuplot","Gnuplot"),
("go","Go"),
("hansl","hansl"),
("haskell","Haskell"),
("html","HTML"),
("idl","IDL"),
("inform","inform"),
("java","Java"),
("jvmis","JVMIS"),
("ksh","ksh"),
("lingo","Lingo"),
("lisp","Lisp"),
("commonlisp","Lisp"),
("llvm","LLVM"),
("logo","Logo"),
("lua","Lua"),
("make","make"),
("makefile","make"),
("mathematica","Mathematica"),
("matlab","Matlab"),
("mercury","Mercury"),
("metapost","MetaPost"),
("miranda","Miranda"),
("mizar","Mizar"),
("ml","ML"),
("modula2","Modula-2"),
("mupad","MuPAD"),
("nastran","NASTRAN"),
("oberon2","Oberon-2"),
("ocl","OCL"),
("octave","Octave"),
("oz","Oz"),
("pascal","Pascal"),
("perl","Perl"),
("php","PHP"),
("pli","PL/I"),
("plasm","Plasm"),
("postscript","PostScript"),
("pov","POV"),
("prolog","Prolog"),
("promela","Promela"),
("pstricks","PSTricks"),
("python","Python"),
("r","R"),
("reduce","Reduce"),
("rexx","Rexx"),
("rsl","RSL"),
("ruby","Ruby"),
("s","S"),
("sas","SAS"),
("scala","Scala"),
("scilab","Scilab"),
("sh","sh"),
("shelxl","SHELXL"),
("simula","Simula"),
("sparql","SPARQL"),
("sql","SQL"),
("tcl","tcl"),
("tex","TeX"),
("latex","TeX"),
("vbscript","VBScript"),
("verilog","Verilog"),
("vhdl","VHDL"),
("vrml","VRML"),
("xml","XML"),
("xslt","XSLT")]
-- | Determine listings language name from skylighting language name.
toListingsLanguage :: String -> Maybe String
toListingsLanguage lang = M.lookup (map toLower lang) langToListingsMap
-- | Determine skylighting language name from listings language name.
fromListingsLanguage :: String -> Maybe String
fromListingsLanguage lang = M.lookup lang listingsToLangMap
|
