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|
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PatternGuards #-}
{- |
Module : Text.Pandoc.Writers.Org
Copyright : © 2010-2015 Puneeth Chaganti <punchagan@gmail.com>
2010-2021 John MacFarlane <jgm@berkeley.edu>
2016-2021 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
License : GNU GPL, version 2 or above
Maintainer : Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
Stability : alpha
Portability : portable
Conversion of 'Pandoc' documents to Emacs Org-Mode.
Org-Mode: <http://orgmode.org>
-}
module Text.Pandoc.Writers.Org (writeOrg) where
import Control.Monad.State.Strict
import Data.Char (isAlphaNum, isDigit)
import Data.List (intersect, intersperse, partition, transpose)
import Data.List.NonEmpty (nonEmpty)
import Data.Text (Text)
import qualified Data.Text as T
import qualified Data.Map as M
import Text.Pandoc.Class.PandocMonad (PandocMonad, report)
import Text.Pandoc.Definition
import Text.Pandoc.Logging
import Text.Pandoc.Options
import Text.DocLayout
import Text.Pandoc.Shared
import Text.Pandoc.Templates (renderTemplate)
import Text.Pandoc.Citeproc.Locator (parseLocator, LocatorMap(..), LocatorInfo(..))
import Text.Pandoc.Writers.Shared
data WriterState =
WriterState { stNotes :: [[Block]]
, stHasMath :: Bool
, stOptions :: WriterOptions
}
type Org = StateT WriterState
-- | Convert Pandoc to Org.
writeOrg :: PandocMonad m => WriterOptions -> Pandoc -> m Text
writeOrg opts document = do
let st = WriterState { stNotes = [],
stHasMath = False,
stOptions = opts }
evalStateT (pandocToOrg document) st
-- | Return Org representation of document.
pandocToOrg :: PandocMonad m => Pandoc -> Org m Text
pandocToOrg (Pandoc meta blocks) = do
opts <- gets stOptions
let colwidth = if writerWrapText opts == WrapAuto
then Just $ writerColumns opts
else Nothing
metadata <- metaToContext opts
blockListToOrg
(fmap chomp . inlineListToOrg)
meta
body <- blockListToOrg blocks
notes <- gets (reverse . stNotes) >>= notesToOrg
hasMath <- gets stHasMath
let main = body $+$ notes
let context = defField "body" main
. defField "math" hasMath
$ metadata
return $ render colwidth $
case writerTemplate opts of
Nothing -> main
Just tpl -> renderTemplate tpl context
-- | Return Org representation of notes.
notesToOrg :: PandocMonad m => [[Block]] -> Org m (Doc Text)
notesToOrg notes =
vsep <$> zipWithM noteToOrg [1..] notes
-- | Return Org representation of a note.
noteToOrg :: PandocMonad m => Int -> [Block] -> Org m (Doc Text)
noteToOrg num note = do
contents <- blockListToOrg note
let marker = "[fn:" ++ show num ++ "] "
return $ hang (length marker) (text marker) contents
-- | Escape special characters for Org.
escapeString :: Text -> Text
escapeString t
| T.all (\c -> c < '\x2013' || c > '\x2026') t = t
| otherwise = T.concatMap escChar t
where
escChar '\x2013' = "--"
escChar '\x2014' = "---"
escChar '\x2019' = "'"
escChar '\x2026' = "..."
escChar c = T.singleton c
isRawFormat :: Format -> Bool
isRawFormat f =
f == Format "latex" || f == Format "tex" || f == Format "org"
-- | Convert Pandoc block element to Org.
blockToOrg :: PandocMonad m
=> Block -- ^ Block element
-> Org m (Doc Text)
blockToOrg Null = return empty
blockToOrg (Div attr@(ident,_,_) bs) = do
opts <- gets stOptions
-- Strip off bibliography if citations enabled
if ident == "refs" && isEnabled Ext_citations opts
then return mempty
else divToOrg attr bs
blockToOrg (Plain inlines) = inlineListToOrg inlines
blockToOrg (SimpleFigure attr txt (src, tit)) = do
capt <- if null txt
then return empty
else ("#+caption: " <>) `fmap` inlineListToOrg txt
img <- inlineToOrg (Image attr txt (src,tit))
return $ capt $$ img $$ blankline
blockToOrg (Para inlines) = do
contents <- inlineListToOrg inlines
return $ contents <> blankline
blockToOrg (LineBlock lns) = do
let splitStanza [] = []
splitStanza xs = case break (== mempty) xs of
(l, []) -> [l]
(l, _:r) -> l : splitStanza r
let joinWithLinefeeds = nowrap . mconcat . intersperse cr
let joinWithBlankLines = mconcat . intersperse blankline
let prettifyStanza ls = joinWithLinefeeds <$> mapM inlineListToOrg ls
contents <- joinWithBlankLines <$> mapM prettifyStanza (splitStanza lns)
return $ blankline $$ "#+begin_verse" $$
nest 2 contents $$ "#+end_verse" <> blankline
blockToOrg (RawBlock "html" str) =
return $ blankline $$ "#+begin_html" $$
nest 2 (literal str) $$ "#+end_html" $$ blankline
blockToOrg b@(RawBlock f str)
| isRawFormat f = return $ literal str
| otherwise = do
report $ BlockNotRendered b
return empty
blockToOrg HorizontalRule = return $ blankline $$ "--------------" $$ blankline
blockToOrg (Header level attr inlines) = do
contents <- inlineListToOrg inlines
let headerStr = text $ if level > 999 then " " else replicate level '*'
let drawerStr = if attr == nullAttr
then empty
else cr <> nest (level + 1) (propertiesDrawer attr)
return $ headerStr <> " " <> contents <> drawerStr <> cr
blockToOrg (CodeBlock (_,classes,kvs) str) = do
let startnum = maybe "" (\x -> " " <> trimr x) $ lookup "startFrom" kvs
let numberlines = if "numberLines" `elem` classes
then if "continuedSourceBlock" `elem` classes
then " +n" <> startnum
else " -n" <> startnum
else ""
let at = map pandocLangToOrg classes `intersect` orgLangIdentifiers
let (beg, end) = case at of
[] -> ("#+begin_example" <> numberlines, "#+end_example")
(x:_) -> ("#+begin_src " <> x <> numberlines, "#+end_src")
return $ literal beg $$ literal str $$ text end $$ blankline
blockToOrg (BlockQuote blocks) = do
contents <- blockListToOrg blocks
return $ blankline $$ "#+begin_quote" $$
nest 2 contents $$ "#+end_quote" $$ blankline
blockToOrg (Table _ blkCapt specs thead tbody tfoot) = do
let (caption', _, _, headers, rows) = toLegacyTable blkCapt specs thead tbody tfoot
caption'' <- inlineListToOrg caption'
let caption = if null caption'
then empty
else "#+caption: " <> caption''
headers' <- mapM blockListToOrg headers
rawRows <- mapM (mapM blockListToOrg) rows
let numChars = maybe 0 maximum . nonEmpty . map offset
-- FIXME: width is not being used.
let widthsInChars =
map numChars $ transpose (headers' : rawRows)
-- FIXME: Org doesn't allow blocks with height more than 1.
let hpipeBlocks blocks = hcat [beg, middle, end]
where sep' = vfill " | "
beg = vfill "| "
end = vfill " |"
middle = hcat $ intersperse sep' blocks
let makeRow = hpipeBlocks . zipWith lblock widthsInChars
let head' = makeRow headers'
rows' <- mapM (\row -> do cols <- mapM blockListToOrg row
return $ makeRow cols) rows
let border ch = char '|' <> char ch <>
(hcat . intersperse (char ch <> char '+' <> char ch) $
map (\l -> text $ replicate l ch) widthsInChars) <>
char ch <> char '|'
let body = vcat rows'
let head'' = if all null headers
then empty
else head' $$ border '-'
return $ head'' $$ body $$ caption $$ blankline
blockToOrg (BulletList items) = do
contents <- mapM bulletListItemToOrg items
-- ensure that sublists have preceding blank line
return $ blankline $$
(if isTightList items then vcat else vsep) contents $$
blankline
blockToOrg (OrderedList (start, _, delim) items) = do
let delim' = case delim of
TwoParens -> OneParen
x -> x
let markers = take (length items) $ orderedListMarkers
(start, Decimal, delim')
let maxMarkerLength = maybe 0 maximum . nonEmpty $ map T.length markers
let markers' = map (\m -> let s = maxMarkerLength - T.length m
in m <> T.replicate s " ") markers
contents <- zipWithM orderedListItemToOrg markers' items
-- ensure that sublists have preceding blank line
return $ blankline $$
(if isTightList items then vcat else vsep) contents $$
blankline
blockToOrg (DefinitionList items) = do
contents <- mapM definitionListItemToOrg items
return $ vcat contents $$ blankline
-- | Convert bullet list item (list of blocks) to Org.
bulletListItemToOrg :: PandocMonad m => [Block] -> Org m (Doc Text)
bulletListItemToOrg items = do
exts <- gets $ writerExtensions . stOptions
contents <- blockListToOrg (taskListItemToOrg exts items)
return $ hang 2 "- " contents $$
if endsWithPlain items
then cr
else blankline
-- | Convert ordered list item (a list of blocks) to Org.
orderedListItemToOrg :: PandocMonad m
=> Text -- ^ marker for list item
-> [Block] -- ^ list item (list of blocks)
-> Org m (Doc Text)
orderedListItemToOrg marker items = do
exts <- gets $ writerExtensions . stOptions
contents <- blockListToOrg (taskListItemToOrg exts items)
return $ hang (T.length marker + 1) (literal marker <> space) contents $$
if endsWithPlain items
then cr
else blankline
-- | Convert a list item containing text starting with @U+2610 BALLOT BOX@
-- or @U+2612 BALLOT BOX WITH X@ to org checkbox syntax (e.g. @[X]@).
taskListItemToOrg :: Extensions -> [Block] -> [Block]
taskListItemToOrg = handleTaskListItem toOrg
where
toOrg (Str "☐" : Space : is) = Str "[ ]" : Space : is
toOrg (Str "☒" : Space : is) = Str "[X]" : Space : is
toOrg is = is
-- | Convert definition list item (label, list of blocks) to Org.
definitionListItemToOrg :: PandocMonad m
=> ([Inline], [[Block]]) -> Org m (Doc Text)
definitionListItemToOrg (label, defs) = do
label' <- inlineListToOrg label
contents <- vcat <$> mapM blockListToOrg defs
return $ hang 2 "- " (label' <> " :: " <> contents) $$
if isTightList defs
then cr
else blankline
-- | Convert list of key/value pairs to Org :PROPERTIES: drawer.
propertiesDrawer :: Attr -> Doc Text
propertiesDrawer (ident, classes, kv) =
let
drawerStart = text ":PROPERTIES:"
drawerEnd = text ":END:"
kv' = if classes == mempty then kv else ("CLASS", T.unwords classes):kv
kv'' = if ident == mempty then kv' else ("CUSTOM_ID", ident):kv'
properties = vcat $ map kvToOrgProperty kv''
in
drawerStart <> cr <> properties <> cr <> drawerEnd
where
kvToOrgProperty :: (Text, Text) -> Doc Text
kvToOrgProperty (key, value) =
text ":" <> literal key <> text ": " <> literal value <> cr
-- | The different methods to represent a Div block.
data DivBlockType
= GreaterBlock Text Attr -- ^ Greater block like @center@ or @quote@.
| Drawer Text Attr -- ^ Org drawer with of given name; keeps
-- key-value pairs.
| UnwrappedWithAnchor Text -- ^ Not mapped to other type, only
-- identifier is retained (if any).
-- | Gives the most suitable method to render a list of blocks
-- with attributes.
divBlockType :: Attr-> DivBlockType
divBlockType (ident, classes, kvs)
-- if any class is named "drawer", then output as org :drawer:
| ([_], drawerName:classes') <- partition (== "drawer") classes
= Drawer drawerName (ident, classes', kvs)
-- if any class is either @center@ or @quote@, then use a org block.
| (blockName:classes'', classes') <- partition isGreaterBlockClass classes
= GreaterBlock blockName (ident, classes' <> classes'', kvs)
-- if no better method is found, unwrap div and set anchor
| otherwise
= UnwrappedWithAnchor ident
where
isGreaterBlockClass :: Text -> Bool
isGreaterBlockClass = (`elem` ["center", "quote"]) . T.toLower
-- | Converts a Div to an org-mode element.
divToOrg :: PandocMonad m
=> Attr -> [Block] -> Org m (Doc Text)
divToOrg attr bs = do
contents <- blockListToOrg bs
case divBlockType attr of
GreaterBlock blockName attr' ->
-- Write as greater block. The ID, if present, is added via
-- the #+name keyword; other classes and key-value pairs
-- are kept as #+attr_html attributes.
return $ blankline $$ attrHtml attr'
$$ "#+begin_" <> literal blockName
$$ contents
$$ "#+end_" <> literal blockName $$ blankline
Drawer drawerName (_,_,kvs) -> do
-- Write as drawer. Only key-value pairs are retained.
let keys = vcat $ map (\(k,v) ->
":" <> literal k <> ":"
<> space <> literal v) kvs
return $ ":" <> literal drawerName <> ":" $$ cr
$$ keys $$ blankline
$$ contents $$ blankline
$$ text ":END:" $$ blankline
UnwrappedWithAnchor ident -> do
-- Unwrap the div. All attributes are discarded, except for
-- the identifier, which is added as an anchor before the
-- div contents.
let contents' = if T.null ident
then contents
else "<<" <> literal ident <> ">>" $$ contents
return (blankline $$ contents' $$ blankline)
attrHtml :: Attr -> Doc Text
attrHtml ("" , [] , []) = mempty
attrHtml (ident, classes, kvs) =
let
name = if T.null ident then mempty else "#+name: " <> literal ident <> cr
keyword = "#+attr_html"
classKv = ("class", T.unwords classes)
kvStrings = map (\(k,v) -> ":" <> k <> " " <> v) (classKv:kvs)
in name <> keyword <> ": " <> literal (T.unwords kvStrings) <> cr
-- | Convert list of Pandoc block elements to Org.
blockListToOrg :: PandocMonad m
=> [Block] -- ^ List of block elements
-> Org m (Doc Text)
blockListToOrg blocks = vcat <$> mapM blockToOrg blocks
-- | Convert list of Pandoc inline elements to Org.
inlineListToOrg :: PandocMonad m
=> [Inline]
-> Org m (Doc Text)
inlineListToOrg lst = hcat <$> mapM inlineToOrg (fixMarkers lst)
where -- Prevent note refs and list markers from wrapping, see #4171
-- and #7132.
fixMarkers [] = []
fixMarkers (Space : x : rest) | shouldFix x =
Str " " : x : fixMarkers rest
fixMarkers (SoftBreak : x : rest) | shouldFix x =
Str " " : x : fixMarkers rest
fixMarkers (x : rest) = x : fixMarkers rest
shouldFix Note{} = True -- Prevent footnotes
shouldFix (Str "-") = True -- Prevent bullet list items
shouldFix (Str x) -- Prevent ordered list items
| Just (cs, c) <- T.unsnoc x = T.all isDigit cs &&
(c == '.' || c == ')')
shouldFix _ = False
-- | Convert Pandoc inline element to Org.
inlineToOrg :: PandocMonad m => Inline -> Org m (Doc Text)
inlineToOrg (Span (uid, [], []) []) =
return $ "<<" <> literal uid <> ">>"
inlineToOrg (Span _ lst) =
inlineListToOrg lst
inlineToOrg (Emph lst) = do
contents <- inlineListToOrg lst
return $ "/" <> contents <> "/"
inlineToOrg (Underline lst) = do
contents <- inlineListToOrg lst
return $ "_" <> contents <> "_"
inlineToOrg (Strong lst) = do
contents <- inlineListToOrg lst
return $ "*" <> contents <> "*"
inlineToOrg (Strikeout lst) = do
contents <- inlineListToOrg lst
return $ "+" <> contents <> "+"
inlineToOrg (Superscript lst) = do
contents <- inlineListToOrg lst
return $ "^{" <> contents <> "}"
inlineToOrg (Subscript lst) = do
contents <- inlineListToOrg lst
return $ "_{" <> contents <> "}"
inlineToOrg (SmallCaps lst) = inlineListToOrg lst
inlineToOrg (Quoted SingleQuote lst) = do
contents <- inlineListToOrg lst
return $ "'" <> contents <> "'"
inlineToOrg (Quoted DoubleQuote lst) = do
contents <- inlineListToOrg lst
return $ "\"" <> contents <> "\""
inlineToOrg (Cite cs lst) = do
opts <- gets stOptions
if isEnabled Ext_citations opts
then do
let renderCiteItem c = do
citePref <- inlineListToOrg (citationPrefix c)
let (locinfo, suffix) = parseLocator locmap (citationSuffix c)
citeSuff <- inlineListToOrg suffix
let locator = case locinfo of
Just info -> literal $
T.replace "\160" " " $
T.replace "{" "" $
T.replace "}" "" $ locatorRaw info
Nothing -> mempty
return $ hsep [ citePref
, ("@" <> literal (citationId c))
, locator
, citeSuff ]
citeItems <- mconcat . intersperse "; " <$> mapM renderCiteItem cs
let sty = case cs of
(d:_)
| citationMode d == AuthorInText
-> literal "/t"
[d]
| citationMode d == SuppressAuthor
-> literal "/na"
_ -> mempty
return $ "[cite" <> sty <> ":" <> citeItems <> "]"
else inlineListToOrg lst
inlineToOrg (Code _ str) = return $ "=" <> literal str <> "="
inlineToOrg (Str str) = return . literal $ escapeString str
inlineToOrg (Math t str) = do
modify $ \st -> st{ stHasMath = True }
return $ if t == InlineMath
then "\\(" <> literal str <> "\\)"
else "\\[" <> literal str <> "\\]"
inlineToOrg il@(RawInline f str)
| elem f ["tex", "latex"] && T.isPrefixOf "\\begin" str =
return $ cr <> literal str <> cr
| isRawFormat f = return $ literal str
| otherwise = do
report $ InlineNotRendered il
return empty
inlineToOrg LineBreak = return (text "\\\\" <> cr)
inlineToOrg Space = return space
inlineToOrg SoftBreak = do
wrapText <- gets (writerWrapText . stOptions)
case wrapText of
WrapPreserve -> return cr
WrapAuto -> return space
WrapNone -> return space
inlineToOrg (Link _ txt (src, _)) =
case txt of
[Str x] | escapeURI x == src -> -- autolink
return $ "[[" <> literal (orgPath x) <> "]]"
_ -> do contents <- inlineListToOrg txt
return $ "[[" <> literal (orgPath src) <> "][" <> contents <> "]]"
inlineToOrg (Image _ _ (source, _)) =
return $ "[[" <> literal (orgPath source) <> "]]"
inlineToOrg (Note contents) = do
-- add to notes in state
notes <- gets stNotes
modify $ \st -> st { stNotes = contents:notes }
let ref = tshow $ length notes + 1
return $ "[fn:" <> literal ref <> "]"
orgPath :: Text -> Text
orgPath src = case T.uncons src of
Nothing -> "" -- wiki link
Just ('#', _) -> src -- internal link
_ | isUrl src -> src
_ | isFilePath src -> src
_ -> "file:" <> src
where
isFilePath :: Text -> Bool
isFilePath cs = any (`T.isPrefixOf` cs) ["/", "./", "../", "file:"]
isUrl :: Text -> Bool
isUrl cs =
let (scheme, path) = T.break (== ':') cs
in T.all (\c -> isAlphaNum c || c `elemText` ".-") scheme
&& not (T.null path)
-- | Translate from pandoc's programming language identifiers to those used by
-- org-mode.
pandocLangToOrg :: Text -> Text
pandocLangToOrg cs =
case cs of
"c" -> "C"
"commonlisp" -> "lisp"
"r" -> "R"
"bash" -> "sh"
_ -> cs
-- | List of language identifiers recognized by org-mode.
-- See <https://orgmode.org/manual/Languages.html>.
orgLangIdentifiers :: [Text]
orgLangIdentifiers =
[ "asymptote"
, "lisp"
, "awk"
, "lua"
, "C"
, "matlab"
, "C++"
, "mscgen"
, "clojure"
, "ocaml"
, "css"
, "octave"
, "D"
, "org"
, "ditaa"
, "oz"
, "calc"
, "perl"
, "emacs-lisp"
, "plantuml"
, "eshell"
, "processing"
, "fortran"
, "python"
, "gnuplot"
, "R"
, "screen"
, "ruby"
, "dot"
, "sass"
, "haskell"
, "scheme"
, "java"
, "sed"
, "js"
, "sh"
, "latex"
, "sql"
, "ledger"
, "sqlite"
, "lilypond"
, "vala" ]
-- taken from oc-csl.el in the org source tree:
locmap :: LocatorMap
locmap = LocatorMap $ M.fromList
[ ("bk." , "book")
, ("bks." , "book")
, ("book" , "book")
, ("chap." , "chapter")
, ("chaps." , "chapter")
, ("chapter" , "chapter")
, ("col." , "column")
, ("cols." , "column")
, ("column" , "column")
, ("figure" , "figure")
, ("fig." , "figure")
, ("figs." , "figure")
, ("folio" , "folio")
, ("fol." , "folio")
, ("fols." , "folio")
, ("number" , "number")
, ("no." , "number")
, ("nos." , "number")
, ("line" , "line")
, ("l." , "line")
, ("ll." , "line")
, ("note" , "note")
, ("n." , "note")
, ("nn." , "note")
, ("opus" , "opus")
, ("op." , "opus")
, ("opp." , "opus")
, ("page" , "page")
, ("p" , "page")
, ("p." , "page")
, ("pp." , "page")
, ("paragraph" , "paragraph")
, ("para." , "paragraph")
, ("paras." , "paragraph")
, ("¶" , "paragraph")
, ("¶¶" , "paragraph")
, ("part" , "part")
, ("pt." , "part")
, ("pts." , "part")
, ("§" , "section")
, ("§§" , "section")
, ("section" , "section")
, ("sec." , "section")
, ("secs." , "section")
, ("sub verbo" , "sub verbo")
, ("s.v." , "sub verbo")
, ("s.vv." , "sub verbo")
, ("verse" , "verse")
, ("v." , "verse")
, ("vv." , "verse")
, ("volume" , "volume")
, ("vol." , "volume")
, ("vols." , "volume") ]
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