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
|
{-# LANGUAGE OverloadedStrings #-}
{- |
Module : Text.Pandoc.Readers.Org.ExportSettings
Copyright : © 2016–2020 Albert Krewinkel
License : GNU GPL, version 2 or above
Maintainer : Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
Parsers for Org-mode export options.
-}
module Text.Pandoc.Readers.Org.ExportSettings
( exportSettings
) where
import Text.Pandoc.Class.PandocMonad (PandocMonad, report)
import Text.Pandoc.Logging (LogMessage (UnknownOrgExportOption))
import Text.Pandoc.Readers.Org.ParserState
import Text.Pandoc.Readers.Org.Parsing
import Control.Monad (mzero, void)
import Data.Char (toLower)
import Data.Maybe (listToMaybe)
import Data.Text (Text)
-- | Read and handle space separated org-mode export settings.
exportSettings :: PandocMonad m => OrgParser m ()
exportSettings = void $ sepBy skipSpaces exportSetting
-- | Setter function for export settings.
type ExportSettingSetter a = a -> ExportSettings -> ExportSettings
-- | Read and process a single org-mode export option.
exportSetting :: PandocMonad m => OrgParser m ()
exportSetting = choice
[ booleanSetting "^" (\val es -> es { exportSubSuperscripts = val })
, booleanSetting "'" (\val es -> es { exportSmartQuotes = val })
, booleanSetting "*" (\val es -> es { exportEmphasizedText = val })
, booleanSetting "-" (\val es -> es { exportSpecialStrings = val })
, ignoredSetting ":"
, ignoredSetting "<"
, booleanSetting "\\n" (\val es -> es { exportPreserveBreaks = val })
, archivedTreeSetting "arch" (\val es -> es { exportArchivedTrees = val })
, booleanSetting "author" (\val es -> es { exportWithAuthor = val })
, ignoredSetting "c"
-- org-mode allows the special value `comment` for creator, which we'll
-- interpret as true as it doesn't make sense in the context of Pandoc.
, booleanSetting "creator" (\val es -> es { exportWithCreator = val })
, complementableListSetting "d" (\val es -> es { exportDrawers = val })
, ignoredSetting "date"
, ignoredSetting "e"
, booleanSetting "email" (\val es -> es { exportWithEmail = val })
, ignoredSetting "f"
, integerSetting "H" (\val es -> es { exportHeadlineLevels = val })
, ignoredSetting "inline"
, ignoredSetting "num"
, booleanSetting "p" (\val es -> es { exportWithPlanning = val })
, ignoredSetting "pri"
, ignoredSetting "prop"
, ignoredSetting "stat"
, booleanSetting "tags" (\val es -> es { exportWithTags = val })
, ignoredSetting "tasks"
, ignoredSetting "tex"
, ignoredSetting "timestamp"
, ignoredSetting "title"
, ignoredSetting "toc"
, booleanSetting "todo" (\val es -> es { exportWithTodoKeywords = val })
, ignoredSetting "|"
, ignoreAndWarn
] <?> "export setting"
genericExportSetting :: Monad m
=> OrgParser m a
-> Text
-> ExportSettingSetter a
-> OrgParser m ()
genericExportSetting optionParser settingIdentifier setter = try $ do
_ <- textStr settingIdentifier *> char ':'
value <- optionParser
updateState $ modifyExportSettings value
where
modifyExportSettings val st =
st { orgStateExportSettings = setter val . orgStateExportSettings $ st }
-- | A boolean option, either nil (False) or non-nil (True).
booleanSetting :: Monad m => Text -> ExportSettingSetter Bool -> OrgParser m ()
booleanSetting = genericExportSetting elispBoolean
-- | An integer-valued option.
integerSetting :: Monad m => Text -> ExportSettingSetter Int -> OrgParser m ()
integerSetting = genericExportSetting parseInt
where
parseInt = try $
many1 digit >>= maybe mzero (return . fst) . listToMaybe . reads
-- | Either the string "headline" or an elisp boolean and treated as an
-- @ArchivedTreesOption@.
archivedTreeSetting :: Monad m
=> Text
-> ExportSettingSetter ArchivedTreesOption
-> OrgParser m ()
archivedTreeSetting =
genericExportSetting $ archivedTreesHeadlineSetting <|> archivedTreesBoolean
where
archivedTreesHeadlineSetting = try $ do
_ <- string "headline"
lookAhead (newline <|> spaceChar)
return ArchivedTreesHeadlineOnly
archivedTreesBoolean = try $ do
exportBool <- elispBoolean
return $
if exportBool
then ArchivedTreesExport
else ArchivedTreesNoExport
-- | A list or a complement list (i.e. a list starting with `not`).
complementableListSetting :: Monad m
=> Text
-> ExportSettingSetter (Either [Text] [Text])
-> OrgParser m ()
complementableListSetting = genericExportSetting $ choice
[ Left <$> complementTextList
, Right <$> stringList
, (\b -> if b then Left [] else Right []) <$> elispBoolean
]
where
-- Read a plain list of strings.
stringList :: Monad m => OrgParser m [Text]
stringList = try $
char '('
*> sepBy elispText spaces
<* char ')'
-- Read an emacs lisp list specifying a complement set.
complementTextList :: Monad m => OrgParser m [Text]
complementTextList = try $
string "(not "
*> sepBy elispText spaces
<* char ')'
elispText :: Monad m => OrgParser m Text
elispText = try $
char '"'
*> manyTillChar alphaNum (char '"')
-- | Read but ignore the export setting.
ignoredSetting :: Monad m => Text -> OrgParser m ()
ignoredSetting s = try (() <$ textStr s <* char ':' <* many1 nonspaceChar)
-- | Read any setting string, but ignore it and emit a warning.
ignoreAndWarn :: PandocMonad m => OrgParser m ()
ignoreAndWarn = try $ do
opt <- many1Char nonspaceChar
report (UnknownOrgExportOption opt)
return ()
-- | Read an elisp boolean. Only NIL is treated as false, non-NIL values are
-- interpreted as true.
elispBoolean :: Monad m => OrgParser m Bool
elispBoolean = try $ do
value <- many1 nonspaceChar
return $ case map toLower value of
"nil" -> False
"{}" -> False
"()" -> False
_ -> True
|
