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|
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-
Copyright (C) 2006-2017 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.Readers.LaTeX
Copyright : Copyright (C) 2006-2017 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
Conversion of LaTeX to 'Pandoc' document.
-}
module Text.Pandoc.Readers.LaTeX ( readLaTeX,
rawLaTeXInline,
rawLaTeXBlock,
inlineCommand,
) where
import Control.Applicative (many, optional, (<|>))
import Control.Monad
import Control.Monad.Except (throwError)
import Data.Char (chr, isAlphaNum, isLetter, ord)
import Data.Text (Text, unpack)
import Data.List (intercalate, isPrefixOf)
import qualified Data.Map as M
import Data.Maybe (fromMaybe, maybeToList)
import Safe (minimumDef)
import System.FilePath (addExtension, replaceExtension, takeExtension)
import Text.Pandoc.Builder
import Text.Pandoc.Class (PandocMonad, PandocPure, lookupEnv, readFileFromDirs,
report, setResourcePath, getResourcePath)
import Text.Pandoc.Highlighting (fromListingsLanguage, languagesByExtension)
import Text.Pandoc.ImageSize (numUnit, showFl)
import Text.Pandoc.Logging
import Text.Pandoc.Options
import Text.Pandoc.Parsing hiding (many, mathDisplay, mathInline, optional,
space, (<|>))
import Text.Pandoc.Shared
import Text.Pandoc.Walk
-- | Parse LaTeX from string and return 'Pandoc' document.
readLaTeX :: PandocMonad m
=> ReaderOptions -- ^ Reader options
-> Text -- ^ String to parse (assumes @'\n'@ line endings)
-> m Pandoc
readLaTeX opts ltx = do
parsed <- readWithM parseLaTeX def{ stateOptions = opts } (unpack ltx)
case parsed of
Right result -> return result
Left e -> throwError e
parseLaTeX :: PandocMonad m => LP m Pandoc
parseLaTeX = do
bs <- blocks
eof
st <- getState
let meta = stateMeta st
let doc' = doc bs
let headerLevel (Header n _ _) = [n]
headerLevel _ = []
let bottomLevel = minimumDef 1 $ query headerLevel doc'
let adjustHeaders m (Header n attr ils) = Header (n+m) attr ils
adjustHeaders _ x = x
let (Pandoc _ bs') =
-- handle the case where you have \part or \chapter
(if bottomLevel < 1
then walk (adjustHeaders (1 - bottomLevel))
else id) doc'
return $ Pandoc meta bs'
type LP m = ParserT String ParserState m
anyControlSeq :: PandocMonad m => LP m String
anyControlSeq = do
char '\\'
next <- option '\n' anyChar
case next of
'\n' -> return ""
c | isLetter c -> (c:) <$> (many letter <* optional sp)
| otherwise -> return [c]
controlSeq :: PandocMonad m => String -> LP m String
controlSeq name = try $ do
char '\\'
case name of
"" -> mzero
[c] | not (isLetter c) -> string [c]
cs -> string cs <* notFollowedBy letter <* optional sp
return name
dimenarg :: PandocMonad m => LP m String
dimenarg = try $ do
ch <- option "" $ string "="
num <- many1 digit
dim <- oneOfStrings ["pt","pc","in","bp","cm","mm","dd","cc","sp"]
return $ ch ++ num ++ dim
sp :: PandocMonad m => LP m ()
sp = whitespace <|> endline
whitespace :: PandocMonad m => LP m ()
whitespace = skipMany1 $ satisfy (\c -> c == ' ' || c == '\t')
endline :: PandocMonad m => LP m ()
endline = try (newline >> lookAhead anyChar >> notFollowedBy blankline)
isLowerHex :: Char -> Bool
isLowerHex x = x >= '0' && x <= '9' || x >= 'a' && x <= 'f'
tildeEscape :: PandocMonad m => LP m Char
tildeEscape = try $ do
string "^^"
c <- satisfy (\x -> x >= '\0' && x <= '\128')
d <- if isLowerHex c
then option "" $ count 1 (satisfy isLowerHex)
else return ""
if null d
then case ord c of
x | x >= 64 && x <= 127 -> return $ chr (x - 64)
| otherwise -> return $ chr (x + 64)
else return $ chr $ read ('0':'x':c:d)
comment :: PandocMonad m => LP m ()
comment = do
char '%'
skipMany (satisfy (/='\n'))
optional newline
return ()
bgroup :: PandocMonad m => LP m ()
bgroup = try $ do
skipMany (spaceChar <|> try (newline <* notFollowedBy blankline))
() <$ char '{'
<|> () <$ controlSeq "bgroup"
<|> () <$ controlSeq "begingroup"
egroup :: PandocMonad m => LP m ()
egroup = () <$ char '}'
<|> () <$ controlSeq "egroup"
<|> () <$ controlSeq "endgroup"
grouped :: PandocMonad m => Monoid a => LP m a -> LP m a
grouped parser = try $ do
bgroup
-- first we check for an inner 'grouped', because
-- {{a,b}} should be parsed the same as {a,b}
try (grouped parser <* egroup)
<|> (mconcat <$> manyTill parser egroup)
braced :: PandocMonad m => LP m String
braced = grouped chunk
where chunk =
many1 (satisfy (\c -> c /= '\\' && c /= '}' && c /= '{'))
<|> try (string "\\}")
<|> try (string "\\{")
<|> try (string "\\\\")
<|> ((\x -> "{" ++ x ++ "}") <$> braced)
<|> count 1 anyChar
bracketed :: PandocMonad m => Monoid a => LP m a -> LP m a
bracketed parser = try $ char '[' *> (mconcat <$> manyTill parser (char ']'))
mathDisplay :: PandocMonad m => LP m String -> LP m Inlines
mathDisplay p = displayMath <$> (try p >>= applyMacros' . trim)
mathInline :: PandocMonad m => LP m String -> LP m Inlines
mathInline p = math <$> (try p >>= applyMacros')
mathChars :: PandocMonad m => LP m String
mathChars =
concat <$> many (escapedChar
<|> (snd <$> withRaw braced)
<|> many1 (satisfy isOrdChar))
where escapedChar = try $ do char '\\'
c <- anyChar
return ['\\',c]
isOrdChar '$' = False
isOrdChar '{' = False
isOrdChar '}' = False
isOrdChar '\\' = False
isOrdChar _ = True
quoted' :: PandocMonad m => (Inlines -> Inlines) -> LP m String -> LP m () -> LP m Inlines
quoted' f starter ender = do
startchs <- starter
smart <- extensionEnabled Ext_smart <$> getOption readerExtensions
if smart
then do
ils <- many (notFollowedBy ender >> inline)
(ender >> return (f (mconcat ils))) <|>
(<> mconcat ils) <$>
lit (case startchs of
"``" -> "“"
"`" -> "‘"
_ -> startchs)
else lit startchs
doubleQuote :: PandocMonad m => LP m Inlines
doubleQuote = do
quoted' doubleQuoted (try $ string "``") (void $ try $ string "''")
<|> quoted' doubleQuoted (string "“") (void $ char '”')
-- the following is used by babel for localized quotes:
<|> quoted' doubleQuoted (try $ string "\"`") (void $ try $ string "\"'")
<|> quoted' doubleQuoted (string "\"") (void $ char '"')
singleQuote :: PandocMonad m => LP m Inlines
singleQuote = do
smart <- extensionEnabled Ext_smart <$> getOption readerExtensions
if smart
then quoted' singleQuoted (string "`") (try $ char '\'' >> notFollowedBy letter)
<|> quoted' singleQuoted (string "‘") (try $ char '’' >> notFollowedBy letter)
else str <$> many1 (oneOf "`\'‘’")
inline :: PandocMonad m => LP m Inlines
inline = (mempty <$ comment)
<|> (space <$ whitespace)
<|> (softbreak <$ endline)
<|> inlineText
<|> inlineCommand
<|> inlineEnvironment
<|> inlineGroup
<|> (char '-' *> option (str "-")
(char '-' *> option (str "–") (str "—" <$ char '-')))
<|> doubleQuote
<|> singleQuote
<|> (str "”" <$ try (string "''"))
<|> (str "”" <$ char '”')
<|> (str "’" <$ char '\'')
<|> (str "’" <$ char '’')
<|> (str "\160" <$ char '~')
<|> mathDisplay (string "$$" *> mathChars <* string "$$")
<|> mathInline (char '$' *> mathChars <* char '$')
<|> (guardEnabled Ext_literate_haskell *> char '|' *> doLHSverb)
<|> (str . (:[]) <$> tildeEscape)
<|> (do res <- oneOf "#&~^'`\"[]"
pos <- getPosition
report $ ParsingUnescaped [res] pos
return $ str [res])
inlines :: PandocMonad m => LP m Inlines
inlines = mconcat <$> many (notFollowedBy (char '}') *> inline)
inlineGroup :: PandocMonad m => LP m Inlines
inlineGroup = do
ils <- grouped inline
if isNull ils
then return mempty
else return $ spanWith nullAttr ils
-- we need the span so we can detitlecase bibtex entries;
-- we need to know when something is {C}apitalized
block :: PandocMonad m => LP m Blocks
block = (mempty <$ comment)
<|> (mempty <$ ((spaceChar <|> newline) *> spaces))
<|> environment
<|> include
<|> macro
<|> blockCommand
<|> paragraph
<|> grouped block
blocks :: PandocMonad m => LP m Blocks
blocks = mconcat <$> many block
getRawCommand :: PandocMonad m => String -> LP m String
getRawCommand name' = do
rawargs <- withRaw (many (try (optional sp *> opt)) *>
option "" (try (optional sp *> dimenarg)) *>
many braced)
return $ '\\' : name' ++ snd rawargs
lookupListDefault :: (Ord k) => v -> [k] -> M.Map k v -> v
lookupListDefault d = (fromMaybe d .) . lookupList
where
lookupList l m = msum $ map (`M.lookup` m) l
blockCommand :: PandocMonad m => LP m Blocks
blockCommand = try $ do
name <- anyControlSeq
guard $ name /= "begin" && name /= "end"
star <- option "" (string "*" <* optional sp)
let name' = name ++ star
let raw = do
rawcommand <- getRawCommand name'
transformed <- applyMacros' rawcommand
guard $ transformed /= rawcommand
notFollowedBy $ parseFromString' inlines transformed
parseFromString' blocks transformed
lookupListDefault raw [name',name] blockCommands
inBrackets :: Inlines -> Inlines
inBrackets x = str "[" <> x <> str "]"
-- eat an optional argument and one or more arguments in braces
ignoreInlines :: PandocMonad m => String -> (String, LP m Inlines)
ignoreInlines name = (name, p)
where
p = do oa <- optargs
let rawCommand = '\\':name ++ oa
let doraw = guardRaw >> return (rawInline "latex" rawCommand)
doraw <|> ignore rawCommand
guardRaw :: PandocMonad m => LP m ()
guardRaw = getOption readerExtensions >>= guard . extensionEnabled Ext_raw_tex
optargs :: PandocMonad m => LP m String
optargs = snd <$> withRaw (skipopts *> skipMany (try $ optional sp *> braced))
ignore :: (Monoid a, PandocMonad m) => String -> ParserT s u m a
ignore raw = do
pos <- getPosition
report $ SkippedContent raw pos
return mempty
ignoreBlocks :: PandocMonad m => String -> (String, LP m Blocks)
ignoreBlocks name = (name, p)
where
p = do oa <- optargs
let rawCommand = '\\':name ++ oa
let doraw = guardRaw >> return (rawBlock "latex" rawCommand)
doraw <|> ignore rawCommand
blockCommands :: PandocMonad m => M.Map String (LP m Blocks)
blockCommands = M.fromList $
[ ("par", mempty <$ skipopts)
, ("parbox", braced >> grouped blocks)
, ("title", mempty <$ (skipopts *>
(grouped inline >>= addMeta "title")
<|> (grouped block >>= addMeta "title")))
, ("subtitle", mempty <$ (skipopts *> tok >>= addMeta "subtitle"))
, ("author", mempty <$ (skipopts *> authors))
-- -- in letter class, temp. store address & sig as title, author
, ("address", mempty <$ (skipopts *> tok >>= addMeta "address"))
, ("signature", mempty <$ (skipopts *> authors))
, ("date", mempty <$ (skipopts *> tok >>= addMeta "date"))
-- Koma-script metadata commands
, ("dedication", mempty <$ (skipopts *> tok >>= addMeta "dedication"))
-- sectioning
, ("part", section nullAttr (-1))
, ("part*", section nullAttr (-1))
, ("chapter", section nullAttr 0)
, ("chapter*", section ("",["unnumbered"],[]) 0)
, ("section", section nullAttr 1)
, ("section*", section ("",["unnumbered"],[]) 1)
, ("subsection", section nullAttr 2)
, ("subsection*", section ("",["unnumbered"],[]) 2)
, ("subsubsection", section nullAttr 3)
, ("subsubsection*", section ("",["unnumbered"],[]) 3)
, ("paragraph", section nullAttr 4)
, ("paragraph*", section ("",["unnumbered"],[]) 4)
, ("subparagraph", section nullAttr 5)
, ("subparagraph*", section ("",["unnumbered"],[]) 5)
-- beamer slides
, ("frametitle", section nullAttr 3)
, ("framesubtitle", section nullAttr 4)
-- letters
, ("opening", (para . trimInlines) <$> (skipopts *> tok))
, ("closing", skipopts *> closing)
--
, ("hrule", pure horizontalRule)
, ("strut", pure mempty)
, ("rule", skipopts *> tok *> tok *> pure horizontalRule)
, ("item", skipopts *> looseItem)
, ("documentclass", skipopts *> braced *> preamble)
, ("centerline", (para . trimInlines) <$> (skipopts *> tok))
, ("caption", skipopts *> setCaption)
, ("bibliography", mempty <$ (skipopts *> braced >>=
addMeta "bibliography" . splitBibs))
, ("addbibresource", mempty <$ (skipopts *> braced >>=
addMeta "bibliography" . splitBibs))
-- includes
, ("lstinputlisting", inputListing)
, ("graphicspath", graphicsPath)
-- hyperlink
, ("hypertarget", braced >> grouped block)
] ++ map ignoreBlocks
-- these commands will be ignored unless --parse-raw is specified,
-- in which case they will appear as raw latex blocks
[ "newcommand", "renewcommand", "newenvironment", "renewenvironment"
-- newcommand, etc. should be parsed by macro, but we need this
-- here so these aren't parsed as inline commands to ignore
, "special", "pdfannot", "pdfstringdef"
, "bibliographystyle"
, "maketitle", "makeindex", "makeglossary"
, "addcontentsline", "addtocontents", "addtocounter"
-- \ignore{} is used conventionally in literate haskell for definitions
-- that are to be processed by the compiler but not printed.
, "ignore"
, "hyperdef"
, "markboth", "markright", "markleft"
, "hspace", "vspace"
, "newpage"
, "clearpage"
, "pagebreak"
]
graphicsPath :: PandocMonad m => LP m Blocks
graphicsPath = do
ps <- bgroup *> (manyTill braced egroup)
getResourcePath >>= setResourcePath . (++ ps)
return mempty
addMeta :: PandocMonad m => ToMetaValue a => String -> a -> LP m ()
addMeta field val = updateState $ \st ->
st{ stateMeta = addMetaField field val $ stateMeta st }
splitBibs :: String -> [Inlines]
splitBibs = map (str . flip replaceExtension "bib" . trim) . splitBy (==',')
setCaption :: PandocMonad m => LP m Blocks
setCaption = do
ils <- tok
mblabel <- option Nothing $
try $ spaces' >> controlSeq "label" >> (Just <$> tok)
let ils' = case mblabel of
Just lab -> ils <> spanWith
("",[],[("data-label", stringify lab)]) mempty
Nothing -> ils
updateState $ \st -> st{ stateCaption = Just ils' }
return mempty
resetCaption :: PandocMonad m => LP m ()
resetCaption = updateState $ \st -> st{ stateCaption = Nothing }
authors :: PandocMonad m => LP m ()
authors = try $ do
bgroup
let oneAuthor = mconcat <$>
many1 (notFollowedBy' (controlSeq "and") >>
(inline <|> mempty <$ blockCommand))
-- skip e.g. \vspace{10pt}
auths <- sepBy oneAuthor (controlSeq "and")
egroup
addMeta "author" (map trimInlines auths)
section :: PandocMonad m => Attr -> Int -> LP m Blocks
section (ident, classes, kvs) lvl = do
skipopts
contents <- grouped inline
lab <- option ident $ try (spaces' >> controlSeq "label" >> spaces' >> braced)
attr' <- registerHeader (lab, classes, kvs) contents
return $ headerWith attr' lvl contents
inlineCommand :: PandocMonad m => LP m Inlines
inlineCommand = try $ do
(name, raw') <- withRaw anyControlSeq
guard $ name /= "begin" && name /= "end"
star <- option "" (string "*")
let name' = name ++ star
let raw = do
guard $ not (isBlockCommand name)
rawargs <- withRaw
(skipangles *> skipopts *> option "" dimenarg *> many braced)
let rawcommand = raw' ++ star ++ snd rawargs
transformed <- applyMacros' rawcommand
exts <- getOption readerExtensions
if transformed /= rawcommand
then parseFromString' inlines transformed
else if extensionEnabled Ext_raw_tex exts
then return $ rawInline "latex" rawcommand
else ignore rawcommand
(lookupListDefault raw [name',name] inlineCommands <*
optional (try (string "{}")))
rawInlineOr :: PandocMonad m => String -> LP m Inlines -> LP m Inlines
rawInlineOr name' fallback = do
parseRaw <- extensionEnabled Ext_raw_tex <$> getOption readerExtensions
if parseRaw
then rawInline "latex" <$> getRawCommand name'
else fallback
isBlockCommand :: String -> Bool
isBlockCommand s = s `M.member` (blockCommands :: M.Map String (LP PandocPure Blocks))
inlineEnvironments :: PandocMonad m => M.Map String (LP m Inlines)
inlineEnvironments = M.fromList
[ ("displaymath", mathEnvWith id Nothing "displaymath")
, ("math", math <$> mathEnv "math")
, ("equation", mathEnvWith id Nothing "equation")
, ("equation*", mathEnvWith id Nothing "equation*")
, ("gather", mathEnvWith id (Just "gathered") "gather")
, ("gather*", mathEnvWith id (Just "gathered") "gather*")
, ("multline", mathEnvWith id (Just "gathered") "multline")
, ("multline*", mathEnvWith id (Just "gathered") "multline*")
, ("eqnarray", mathEnvWith id (Just "aligned") "eqnarray")
, ("eqnarray*", mathEnvWith id (Just "aligned") "eqnarray*")
, ("align", mathEnvWith id (Just "aligned") "align")
, ("align*", mathEnvWith id (Just "aligned") "align*")
, ("alignat", mathEnvWith id (Just "aligned") "alignat")
, ("alignat*", mathEnvWith id (Just "aligned") "alignat*")
]
inlineCommands :: PandocMonad m => M.Map String (LP m Inlines)
inlineCommands = M.fromList $
[ ("emph", extractSpaces emph <$> tok)
, ("textit", extractSpaces emph <$> tok)
, ("textsl", extractSpaces emph <$> tok)
, ("textsc", extractSpaces smallcaps <$> tok)
, ("textsf", extractSpaces (spanWith ("",["sans-serif"],[])) <$> tok)
, ("textmd", extractSpaces (spanWith ("",["medium"],[])) <$> tok)
, ("textrm", extractSpaces (spanWith ("",["roman"],[])) <$> tok)
, ("textup", extractSpaces (spanWith ("",["upright"],[])) <$> tok)
, ("texttt", ttfamily)
, ("sout", extractSpaces strikeout <$> tok)
, ("textsuperscript", extractSpaces superscript <$> tok)
, ("textsubscript", extractSpaces subscript <$> tok)
, ("textbackslash", lit "\\")
, ("backslash", lit "\\")
, ("slash", lit "/")
, ("textbf", extractSpaces strong <$> tok)
, ("textnormal", extractSpaces (spanWith ("",["nodecor"],[])) <$> tok)
, ("ldots", lit "…")
, ("vdots", lit "\8942")
, ("dots", lit "…")
, ("mdots", lit "…")
, ("sim", lit "~")
, ("label", rawInlineOr "label" (inBrackets <$> tok))
, ("ref", rawInlineOr "ref" (inBrackets <$> tok))
, ("textgreek", tok)
, ("sep", lit ",")
, ("cref", rawInlineOr "cref" (inBrackets <$> tok)) -- from cleveref.sty
, ("(", mathInline $ manyTill anyChar (try $ string "\\)"))
, ("[", mathDisplay $ manyTill anyChar (try $ string "\\]"))
, ("ensuremath", mathInline braced)
, ("texorpdfstring", (\_ x -> x) <$> tok <*> tok)
, ("P", lit "¶")
, ("S", lit "§")
, ("$", lit "$")
, ("%", lit "%")
, ("&", lit "&")
, ("#", lit "#")
, ("_", lit "_")
, ("{", lit "{")
, ("}", lit "}")
-- old TeX commands
, ("em", extractSpaces emph <$> inlines)
, ("it", extractSpaces emph <$> inlines)
, ("sl", extractSpaces emph <$> inlines)
, ("bf", extractSpaces strong <$> inlines)
, ("rm", inlines)
, ("itshape", extractSpaces emph <$> inlines)
, ("slshape", extractSpaces emph <$> inlines)
, ("scshape", extractSpaces smallcaps <$> inlines)
, ("bfseries", extractSpaces strong <$> inlines)
, ("/", pure mempty) -- italic correction
, ("aa", lit "å")
, ("AA", lit "Å")
, ("ss", lit "ß")
, ("o", lit "ø")
, ("O", lit "Ø")
, ("L", lit "Ł")
, ("l", lit "ł")
, ("ae", lit "æ")
, ("AE", lit "Æ")
, ("oe", lit "œ")
, ("OE", lit "Œ")
, ("pounds", lit "£")
, ("euro", lit "€")
, ("copyright", lit "©")
, ("textasciicircum", lit "^")
, ("textasciitilde", lit "~")
, ("H", try $ tok >>= accent hungarumlaut)
, ("`", option (str "`") $ try $ tok >>= accent grave)
, ("'", option (str "'") $ try $ tok >>= accent acute)
, ("^", option (str "^") $ try $ tok >>= accent circ)
, ("~", option (str "~") $ try $ tok >>= accent tilde)
, ("\"", option (str "\"") $ try $ tok >>= accent umlaut)
, (".", option (str ".") $ try $ tok >>= accent dot)
, ("=", option (str "=") $ try $ tok >>= accent macron)
, ("c", option (str "c") $ try $ tok >>= accent cedilla)
, ("v", option (str "v") $ try $ tok >>= accent hacek)
, ("u", option (str "u") $ try $ tok >>= accent breve)
, ("i", lit "i")
, ("\\", linebreak <$ (optional (bracketed inline) *> spaces'))
, (",", lit "\8198")
, ("@", pure mempty)
, (" ", lit "\160")
, ("ps", pure $ str "PS." <> space)
, ("TeX", lit "TeX")
, ("LaTeX", lit "LaTeX")
, ("bar", lit "|")
, ("textless", lit "<")
, ("textgreater", lit ">")
, ("thanks", note <$> grouped block)
, ("footnote", note <$> grouped block)
, ("verb", doverb)
, ("lstinline", dolstinline)
, ("Verb", doverb)
, ("url", (unescapeURL <$> braced) >>= \url ->
pure (link url "" (str url)))
, ("href", (unescapeURL <$> braced <* optional sp) >>= \url ->
tok >>= \lab ->
pure (link url "" lab))
, ("includegraphics", do options <- option [] keyvals
src <- unescapeURL . removeDoubleQuotes <$> braced
mkImage options src)
, ("enquote", enquote)
, ("cite", citation "cite" NormalCitation False)
, ("Cite", citation "Cite" NormalCitation False)
, ("citep", citation "citep" NormalCitation False)
, ("citep*", citation "citep*" NormalCitation False)
, ("citeal", citation "citeal" NormalCitation False)
, ("citealp", citation "citealp" NormalCitation False)
, ("citealp*", citation "citealp*" NormalCitation False)
, ("autocite", citation "autocite" NormalCitation False)
, ("smartcite", citation "smartcite" NormalCitation False)
, ("footcite", inNote <$> citation "footcite" NormalCitation False)
, ("parencite", citation "parencite" NormalCitation False)
, ("supercite", citation "supercite" NormalCitation False)
, ("footcitetext", inNote <$> citation "footcitetext" NormalCitation False)
, ("citeyearpar", citation "citeyearpar" SuppressAuthor False)
, ("citeyear", citation "citeyear" SuppressAuthor False)
, ("autocite*", citation "autocite*" SuppressAuthor False)
, ("cite*", citation "cite*" SuppressAuthor False)
, ("parencite*", citation "parencite*" SuppressAuthor False)
, ("textcite", citation "textcite" AuthorInText False)
, ("citet", citation "citet" AuthorInText False)
, ("citet*", citation "citet*" AuthorInText False)
, ("citealt", citation "citealt" AuthorInText False)
, ("citealt*", citation "citealt*" AuthorInText False)
, ("textcites", citation "textcites" AuthorInText True)
, ("cites", citation "cites" NormalCitation True)
, ("autocites", citation "autocites" NormalCitation True)
, ("footcites", inNote <$> citation "footcites" NormalCitation True)
, ("parencites", citation "parencites" NormalCitation True)
, ("supercites", citation "supercites" NormalCitation True)
, ("footcitetexts", inNote <$> citation "footcitetexts" NormalCitation True)
, ("Autocite", citation "Autocite" NormalCitation False)
, ("Smartcite", citation "Smartcite" NormalCitation False)
, ("Footcite", citation "Footcite" NormalCitation False)
, ("Parencite", citation "Parencite" NormalCitation False)
, ("Supercite", citation "Supercite" NormalCitation False)
, ("Footcitetext", inNote <$> citation "Footcitetext" NormalCitation False)
, ("Citeyearpar", citation "Citeyearpar" SuppressAuthor False)
, ("Citeyear", citation "Citeyear" SuppressAuthor False)
, ("Autocite*", citation "Autocite*" SuppressAuthor False)
, ("Cite*", citation "Cite*" SuppressAuthor False)
, ("Parencite*", citation "Parencite*" SuppressAuthor False)
, ("Textcite", citation "Textcite" AuthorInText False)
, ("Textcites", citation "Textcites" AuthorInText True)
, ("Cites", citation "Cites" NormalCitation True)
, ("Autocites", citation "Autocites" NormalCitation True)
, ("Footcites", citation "Footcites" NormalCitation True)
, ("Parencites", citation "Parencites" NormalCitation True)
, ("Supercites", citation "Supercites" NormalCitation True)
, ("Footcitetexts", inNote <$> citation "Footcitetexts" NormalCitation True)
, ("citetext", complexNatbibCitation NormalCitation)
, ("citeauthor", (try (tok *> optional sp *> controlSeq "citetext") *>
complexNatbibCitation AuthorInText)
<|> citation "citeauthor" AuthorInText False)
, ("nocite", mempty <$ (citation "nocite" NormalCitation False >>=
addMeta "nocite"))
, ("hypertarget", braced >> tok)
-- siuntix
, ("SI", dosiunitx)
-- hyphenat
, ("bshyp", lit "\\\173")
, ("fshyp", lit "/\173")
, ("dothyp", lit ".\173")
, ("colonhyp", lit ":\173")
, ("hyp", lit "-")
, ("nohyphens", tok)
, ("textnhtt", ttfamily)
, ("nhttfamily", ttfamily)
] ++ map ignoreInlines
-- these commands will be ignored unless --parse-raw is specified,
-- in which case they will appear as raw latex blocks:
[ "index"
, "hspace"
, "vspace"
, "newpage"
, "clearpage"
, "pagebreak"
]
ttfamily :: PandocMonad m => LP m Inlines
ttfamily = (code . stringify . toList) <$> tok
mkImage :: PandocMonad m => [(String, String)] -> String -> LP m Inlines
mkImage options src = do
let replaceTextwidth (k,v) = case numUnit v of
Just (num, "\\textwidth") -> (k, showFl (num * 100) ++ "%")
_ -> (k, v)
let kvs = map replaceTextwidth $ filter (\(k,_) -> k `elem` ["width", "height"]) options
let attr = ("",[], kvs)
let alt = str "image"
case takeExtension src of
"" -> do
defaultExt <- getOption readerDefaultImageExtension
return $ imageWith attr (addExtension src defaultExt) "" alt
_ -> return $ imageWith attr src "" alt
inNote :: Inlines -> Inlines
inNote ils =
note $ para $ ils <> str "."
unescapeURL :: String -> String
unescapeURL ('\\':x:xs) | isEscapable x = x:unescapeURL xs
where isEscapable c = c `elem` ("#$%&~_^\\{}" :: String)
unescapeURL (x:xs) = x:unescapeURL xs
unescapeURL [] = ""
enquote :: PandocMonad m => LP m Inlines
enquote = do
skipopts
context <- stateQuoteContext <$> getState
if context == InDoubleQuote
then singleQuoted <$> withQuoteContext InSingleQuote tok
else doubleQuoted <$> withQuoteContext InDoubleQuote tok
doverb :: PandocMonad m => LP m Inlines
doverb = do
marker <- anyChar
code <$> manyTill (satisfy (/='\n')) (char marker)
dolstinline :: PandocMonad m => LP m Inlines
dolstinline = do
options <- option [] keyvals
let classes = maybeToList $ lookup "language" options >>= fromListingsLanguage
marker <- char '{' <|> anyChar
codeWith ("",classes,[]) <$> manyTill (satisfy (/='\n')) (char '}' <|> char marker)
doLHSverb :: PandocMonad m => LP m Inlines
doLHSverb = codeWith ("",["haskell"],[]) <$> manyTill (satisfy (/='\n')) (char '|')
-- converts e.g. \SI{1}[\$]{} to "$ 1" or \SI{1}{\euro} to "1 €"
dosiunitx :: PandocMonad m => LP m Inlines
dosiunitx = do
skipopts
value <- tok
valueprefix <- option "" $ char '[' >> (mconcat <$> manyTill tok (char ']'))
unit <- tok
let emptyOr160 "" = ""
emptyOr160 _ = "\160"
return . mconcat $ [valueprefix,
emptyOr160 valueprefix,
value,
emptyOr160 unit,
unit]
lit :: String -> LP m Inlines
lit = pure . str
accent :: (Char -> String) -> Inlines -> LP m Inlines
accent f ils =
case toList ils of
(Str (x:xs) : ys) -> return $ fromList (Str (f x ++ xs) : ys)
[] -> mzero
_ -> return ils
grave :: Char -> String
grave 'A' = "À"
grave 'E' = "È"
grave 'I' = "Ì"
grave 'O' = "Ò"
grave 'U' = "Ù"
grave 'a' = "à"
grave 'e' = "è"
grave 'i' = "ì"
grave 'o' = "ò"
grave 'u' = "ù"
grave c = [c]
acute :: Char -> String
acute 'A' = "Á"
acute 'E' = "É"
acute 'I' = "Í"
acute 'O' = "Ó"
acute 'U' = "Ú"
acute 'Y' = "Ý"
acute 'a' = "á"
acute 'e' = "é"
acute 'i' = "í"
acute 'o' = "ó"
acute 'u' = "ú"
acute 'y' = "ý"
acute 'C' = "Ć"
acute 'c' = "ć"
acute 'L' = "Ĺ"
acute 'l' = "ĺ"
acute 'N' = "Ń"
acute 'n' = "ń"
acute 'R' = "Ŕ"
acute 'r' = "ŕ"
acute 'S' = "Ś"
acute 's' = "ś"
acute 'Z' = "Ź"
acute 'z' = "ź"
acute c = [c]
circ :: Char -> String
circ 'A' = "Â"
circ 'E' = "Ê"
circ 'I' = "Î"
circ 'O' = "Ô"
circ 'U' = "Û"
circ 'a' = "â"
circ 'e' = "ê"
circ 'i' = "î"
circ 'o' = "ô"
circ 'u' = "û"
circ 'C' = "Ĉ"
circ 'c' = "ĉ"
circ 'G' = "Ĝ"
circ 'g' = "ĝ"
circ 'H' = "Ĥ"
circ 'h' = "ĥ"
circ 'J' = "Ĵ"
circ 'j' = "ĵ"
circ 'S' = "Ŝ"
circ 's' = "ŝ"
circ 'W' = "Ŵ"
circ 'w' = "ŵ"
circ 'Y' = "Ŷ"
circ 'y' = "ŷ"
circ c = [c]
tilde :: Char -> String
tilde 'A' = "Ã"
tilde 'a' = "ã"
tilde 'O' = "Õ"
tilde 'o' = "õ"
tilde 'I' = "Ĩ"
tilde 'i' = "ĩ"
tilde 'U' = "Ũ"
tilde 'u' = "ũ"
tilde 'N' = "Ñ"
tilde 'n' = "ñ"
tilde c = [c]
umlaut :: Char -> String
umlaut 'A' = "Ä"
umlaut 'E' = "Ë"
umlaut 'I' = "Ï"
umlaut 'O' = "Ö"
umlaut 'U' = "Ü"
umlaut 'a' = "ä"
umlaut 'e' = "ë"
umlaut 'i' = "ï"
umlaut 'o' = "ö"
umlaut 'u' = "ü"
umlaut c = [c]
hungarumlaut :: Char -> String
hungarumlaut 'A' = "A̋"
hungarumlaut 'E' = "E̋"
hungarumlaut 'I' = "I̋"
hungarumlaut 'O' = "Ő"
hungarumlaut 'U' = "Ű"
hungarumlaut 'Y' = "ӳ"
hungarumlaut 'a' = "a̋"
hungarumlaut 'e' = "e̋"
hungarumlaut 'i' = "i̋"
hungarumlaut 'o' = "ő"
hungarumlaut 'u' = "ű"
hungarumlaut 'y' = "ӳ"
hungarumlaut c = [c]
dot :: Char -> String
dot 'C' = "Ċ"
dot 'c' = "ċ"
dot 'E' = "Ė"
dot 'e' = "ė"
dot 'G' = "Ġ"
dot 'g' = "ġ"
dot 'I' = "İ"
dot 'Z' = "Ż"
dot 'z' = "ż"
dot c = [c]
macron :: Char -> String
macron 'A' = "Ā"
macron 'E' = "Ē"
macron 'I' = "Ī"
macron 'O' = "Ō"
macron 'U' = "Ū"
macron 'a' = "ā"
macron 'e' = "ē"
macron 'i' = "ī"
macron 'o' = "ō"
macron 'u' = "ū"
macron c = [c]
cedilla :: Char -> String
cedilla 'c' = "ç"
cedilla 'C' = "Ç"
cedilla 's' = "ş"
cedilla 'S' = "Ş"
cedilla 't' = "ţ"
cedilla 'T' = "Ţ"
cedilla 'e' = "ȩ"
cedilla 'E' = "Ȩ"
cedilla 'h' = "ḩ"
cedilla 'H' = "Ḩ"
cedilla 'o' = "o̧"
cedilla 'O' = "O̧"
cedilla c = [c]
hacek :: Char -> String
hacek 'A' = "Ǎ"
hacek 'a' = "ǎ"
hacek 'C' = "Č"
hacek 'c' = "č"
hacek 'D' = "Ď"
hacek 'd' = "ď"
hacek 'E' = "Ě"
hacek 'e' = "ě"
hacek 'G' = "Ǧ"
hacek 'g' = "ǧ"
hacek 'H' = "Ȟ"
hacek 'h' = "ȟ"
hacek 'I' = "Ǐ"
hacek 'i' = "ǐ"
hacek 'j' = "ǰ"
hacek 'K' = "Ǩ"
hacek 'k' = "ǩ"
hacek 'L' = "Ľ"
hacek 'l' = "ľ"
hacek 'N' = "Ň"
hacek 'n' = "ň"
hacek 'O' = "Ǒ"
hacek 'o' = "ǒ"
hacek 'R' = "Ř"
hacek 'r' = "ř"
hacek 'S' = "Š"
hacek 's' = "š"
hacek 'T' = "Ť"
hacek 't' = "ť"
hacek 'U' = "Ǔ"
hacek 'u' = "ǔ"
hacek 'Z' = "Ž"
hacek 'z' = "ž"
hacek c = [c]
breve :: Char -> String
breve 'A' = "Ă"
breve 'a' = "ă"
breve 'E' = "Ĕ"
breve 'e' = "ĕ"
breve 'G' = "Ğ"
breve 'g' = "ğ"
breve 'I' = "Ĭ"
breve 'i' = "ĭ"
breve 'O' = "Ŏ"
breve 'o' = "ŏ"
breve 'U' = "Ŭ"
breve 'u' = "ŭ"
breve c = [c]
tok :: PandocMonad m => LP m Inlines
tok = try $ grouped inline <|> inlineCommand <|> str <$> count 1 inlineChar
opt :: PandocMonad m => LP m Inlines
opt = bracketed inline
rawopt :: PandocMonad m => LP m String
rawopt = do
contents <- bracketed (many1 (noneOf "[]") <|> try (string "\\]") <|>
try (string "\\[") <|> rawopt)
optional sp
return $ "[" ++ contents ++ "]"
skipopts :: PandocMonad m => LP m ()
skipopts = skipMany rawopt
-- opts in angle brackets are used in beamer
rawangle :: PandocMonad m => LP m ()
rawangle = try $ do
char '<'
skipMany (noneOf ">")
char '>'
return ()
skipangles :: PandocMonad m => LP m ()
skipangles = skipMany rawangle
inlineText :: PandocMonad m => LP m Inlines
inlineText = str <$> many1 inlineChar
inlineChar :: PandocMonad m => LP m Char
inlineChar = noneOf "\\$%&~#{}^'`\"‘’“”-[] \t\n"
environment :: PandocMonad m => LP m Blocks
environment = do
controlSeq "begin"
name <- braced
M.findWithDefault mzero name environments
<|> rawEnv name
inlineEnvironment :: PandocMonad m => LP m Inlines
inlineEnvironment = try $ do
controlSeq "begin"
name <- braced
M.findWithDefault mzero name inlineEnvironments
rawEnv :: PandocMonad m => String -> LP m Blocks
rawEnv name = do
exts <- getOption readerExtensions
let parseRaw = extensionEnabled Ext_raw_tex exts
rawOptions <- mconcat <$> many rawopt
let beginCommand = "\\begin{" ++ name ++ "}" ++ rawOptions
pos1 <- getPosition
(bs, raw) <- withRaw $ env name blocks
raw' <- applyMacros' $ beginCommand ++ raw
if raw' /= beginCommand ++ raw
then parseFromString' blocks raw'
else if parseRaw
then return $ rawBlock "latex" $ beginCommand ++ raw'
else do
unless parseRaw $ do
report $ SkippedContent beginCommand pos1
pos2 <- getPosition
report $ SkippedContent ("\\end{" ++ name ++ "}") pos2
return bs
rawVerbEnv :: PandocMonad m => String -> LP m Blocks
rawVerbEnv name = do
pos <- getPosition
(_, raw) <- withRaw $ verbEnv name
let raw' = "\\begin{tikzpicture}" ++ raw
exts <- getOption readerExtensions
let parseRaw = extensionEnabled Ext_raw_tex exts
if parseRaw
then return $ rawBlock "latex" raw'
else do
report $ SkippedContent raw' pos
return mempty
----
maybeAddExtension :: String -> FilePath -> FilePath
maybeAddExtension ext fp =
if null (takeExtension fp)
then addExtension fp ext
else fp
include :: PandocMonad m => LP m Blocks
include = do
fs' <- try $ do
char '\\'
name <- try (string "include")
<|> try (string "input")
<|> try (string "subfile")
<|> string "usepackage"
-- skip options
skipMany $ try $ char '[' *> manyTill anyChar (char ']')
fs <- (map trim . splitBy (==',')) <$> braced
return $ if name == "usepackage"
then map (maybeAddExtension ".sty") fs
else map (maybeAddExtension ".tex") fs
dirs <- (splitBy (==':') . fromMaybe ".") <$> lookupEnv "TEXINPUTS"
mconcat <$> mapM (insertIncludedFile blocks dirs) fs'
inputListing :: PandocMonad m => LP m Blocks
inputListing = do
pos <- getPosition
options <- option [] keyvals
f <- filter (/='"') <$> braced
dirs <- (splitBy (==':') . fromMaybe ".") <$> lookupEnv "TEXINPUTS"
mbCode <- readFileFromDirs dirs f
codeLines <- case mbCode of
Just s -> return $ lines s
Nothing -> do
report $ CouldNotLoadIncludeFile f pos
return []
let (ident,classes,kvs) = parseListingsOptions options
let language = case lookup "language" options >>= fromListingsLanguage of
Just l -> [l]
Nothing -> take 1 $ languagesByExtension (takeExtension f)
let firstline = fromMaybe 1 $ lookup "firstline" options >>= safeRead
let lastline = fromMaybe (length codeLines) $
lookup "lastline" options >>= safeRead
let codeContents = intercalate "\n" $ take (1 + lastline - firstline) $
drop (firstline - 1) codeLines
return $ codeBlockWith (ident,ordNub (classes ++ language),kvs) codeContents
parseListingsOptions :: [(String, String)] -> Attr
parseListingsOptions options =
let kvs = [ (if k == "firstnumber"
then "startFrom"
else k, v) | (k,v) <- options ]
classes = [ "numberLines" |
lookup "numbers" options == Just "left" ]
++ maybeToList (lookup "language" options
>>= fromListingsLanguage)
in (fromMaybe "" (lookup "label" options), classes, kvs)
----
keyval :: PandocMonad m => LP m (String, String)
keyval = try $ do
key <- many1 alphaNum
val <- option "" $ char '=' >> braced <|> (many1 (alphaNum <|> oneOf ".:-|\\"))
skipMany spaceChar
optional (char ',')
skipMany spaceChar
return (key, val)
keyvals :: PandocMonad m => LP m [(String, String)]
keyvals = try $ char '[' *> manyTill keyval (char ']')
alltt :: PandocMonad m => String -> LP m Blocks
alltt t = walk strToCode <$> parseFromString' blocks
(substitute " " "\\ " $ substitute "%" "\\%" $
intercalate "\\\\\n" $ lines t)
where strToCode (Str s) = Code nullAttr s
strToCode x = x
rawLaTeXBlock :: PandocMonad m => LP m String
rawLaTeXBlock = snd <$> try (withRaw (environment <|> blockCommand))
rawLaTeXInline :: PandocMonad m => LP m Inline
rawLaTeXInline = do
raw <- (snd <$> withRaw inlineCommand)
<|> (snd <$> withRaw inlineEnvironment)
<|> (snd <$> withRaw blockCommand)
RawInline "latex" <$> applyMacros' raw
addImageCaption :: PandocMonad m => Blocks -> LP m Blocks
addImageCaption = walkM go
where go (Image attr alt (src,tit))
| not ("fig:" `isPrefixOf` tit) = do
mbcapt <- stateCaption <$> getState
return $ case mbcapt of
Just ils -> Image attr (toList ils) (src, "fig:" ++ tit)
Nothing -> Image attr alt (src,tit)
go x = return x
addTableCaption :: PandocMonad m => Blocks -> LP m Blocks
addTableCaption = walkM go
where go (Table c als ws hs rs) = do
mbcapt <- stateCaption <$> getState
return $ case mbcapt of
Just ils -> Table (toList ils) als ws hs rs
Nothing -> Table c als ws hs rs
go x = return x
environments :: PandocMonad m => M.Map String (LP m Blocks)
environments = M.fromList
[ ("document", env "document" blocks <* skipMany anyChar)
, ("abstract", mempty <$ (env "abstract" blocks >>= addMeta "abstract"))
, ("letter", env "letter" letterContents)
, ("minipage", env "minipage" $
skipopts *> spaces' *> optional braced *> spaces' *> blocks)
, ("figure", env "figure" $ skipopts *> figure)
, ("subfigure", env "subfigure" $ skipopts *> tok *> figure)
, ("center", env "center" blocks)
, ("longtable", env "longtable" $
resetCaption *> simpTable "longtable" False >>= addTableCaption)
, ("table", env "table" $
resetCaption *> skipopts *> blocks >>= addTableCaption)
, ("tabular*", env "tabular" $ simpTable "tabular*" True)
, ("tabularx", env "tabularx" $ simpTable "tabularx" True)
, ("tabular", env "tabular" $ simpTable "tabular" False)
, ("quote", blockQuote <$> env "quote" blocks)
, ("quotation", blockQuote <$> env "quotation" blocks)
, ("verse", blockQuote <$> env "verse" blocks)
, ("itemize", bulletList <$> listenv "itemize" (many item))
, ("description", definitionList <$> listenv "description" (many descItem))
, ("enumerate", orderedList')
, ("alltt", alltt =<< verbEnv "alltt")
, ("code", guardEnabled Ext_literate_haskell *>
(codeBlockWith ("",["sourceCode","literate","haskell"],[]) <$>
verbEnv "code"))
, ("comment", mempty <$ verbEnv "comment")
, ("verbatim", codeBlock <$> verbEnv "verbatim")
, ("Verbatim", fancyverbEnv "Verbatim")
, ("BVerbatim", fancyverbEnv "BVerbatim")
, ("lstlisting", do attr <- parseListingsOptions <$> option [] keyvals
codeBlockWith attr <$> verbEnv "lstlisting")
, ("minted", do options <- option [] keyvals
lang <- grouped (many1 $ satisfy (/='}'))
let kvs = [ (if k == "firstnumber"
then "startFrom"
else k, v) | (k,v) <- options ]
let classes = [ lang | not (null lang) ] ++
[ "numberLines" |
lookup "linenos" options == Just "true" ]
let attr = ("",classes,kvs)
codeBlockWith attr <$> verbEnv "minted")
, ("obeylines", parseFromString
(para . trimInlines . mconcat <$> many inline) =<<
intercalate "\\\\\n" . lines <$> verbEnv "obeylines")
, ("displaymath", mathEnvWith para Nothing "displaymath")
, ("equation", mathEnvWith para Nothing "equation")
, ("equation*", mathEnvWith para Nothing "equation*")
, ("gather", mathEnvWith para (Just "gathered") "gather")
, ("gather*", mathEnvWith para (Just "gathered") "gather*")
, ("multline", mathEnvWith para (Just "gathered") "multline")
, ("multline*", mathEnvWith para (Just "gathered") "multline*")
, ("eqnarray", mathEnvWith para (Just "aligned") "eqnarray")
, ("eqnarray*", mathEnvWith para (Just "aligned") "eqnarray*")
, ("align", mathEnvWith para (Just "aligned") "align")
, ("align*", mathEnvWith para (Just "aligned") "align*")
, ("alignat", mathEnvWith para (Just "aligned") "alignat")
, ("alignat*", mathEnvWith para (Just "aligned") "alignat*")
, ("tikzpicture", rawVerbEnv "tikzpicture")
]
figure :: PandocMonad m => LP m Blocks
figure = try $ do
resetCaption
blocks >>= addImageCaption
letterContents :: PandocMonad m => LP m Blocks
letterContents = do
bs <- blocks
st <- getState
-- add signature (author) and address (title)
let addr = case lookupMeta "address" (stateMeta st) of
Just (MetaBlocks [Plain xs]) ->
para $ trimInlines $ fromList xs
_ -> mempty
return $ addr <> bs -- sig added by \closing
closing :: PandocMonad m => LP m Blocks
closing = do
contents <- tok
st <- getState
let extractInlines (MetaBlocks [Plain ys]) = ys
extractInlines (MetaBlocks [Para ys ]) = ys
extractInlines _ = []
let sigs = case lookupMeta "author" (stateMeta st) of
Just (MetaList xs) ->
para $ trimInlines $ fromList $
intercalate [LineBreak] $ map extractInlines xs
_ -> mempty
return $ para (trimInlines contents) <> sigs
item :: PandocMonad m => LP m Blocks
item = blocks *> controlSeq "item" *> skipopts *> blocks
looseItem :: PandocMonad m => LP m Blocks
looseItem = do
ctx <- stateParserContext `fmap` getState
if ctx == ListItemState
then mzero
else return mempty
descItem :: PandocMonad m => LP m (Inlines, [Blocks])
descItem = do
blocks -- skip blocks before item
controlSeq "item"
optional sp
ils <- opt
bs <- blocks
return (ils, [bs])
env :: PandocMonad m => String -> LP m a -> LP m a
env name p = p <*
(try (controlSeq "end" *> braced >>= guard . (== name))
<?> ("\\end{" ++ name ++ "}"))
listenv :: PandocMonad m => String -> LP m a -> LP m a
listenv name p = try $ do
oldCtx <- stateParserContext `fmap` getState
updateState $ \st -> st{ stateParserContext = ListItemState }
res <- env name p
updateState $ \st -> st{ stateParserContext = oldCtx }
return res
mathEnvWith :: PandocMonad m
=> (Inlines -> a) -> Maybe String -> String -> LP m a
mathEnvWith f innerEnv name = f <$> mathDisplay (inner <$> mathEnv name)
where inner x = case innerEnv of
Nothing -> x
Just y -> "\\begin{" ++ y ++ "}\n" ++ x ++
"\\end{" ++ y ++ "}"
mathEnv :: PandocMonad m => String -> LP m String
mathEnv name = do
skipopts
optional blankline
let endEnv = try $ controlSeq "end" *> braced >>= guard . (== name)
charMuncher = skipMany comment *>
(many1 (noneOf "\\%") <|> try (string "\\%")
<|> try (string "\\\\") <|> count 1 anyChar)
res <- concat <$> manyTill charMuncher endEnv
return $ stripTrailingNewlines res
verbEnv :: PandocMonad m => String -> LP m String
verbEnv name = do
skipopts
optional blankline
let endEnv = try $ controlSeq "end" *> braced >>= guard . (== name)
charMuncher = anyChar
res <- manyTill charMuncher endEnv
return $ stripTrailingNewlines res
fancyverbEnv :: PandocMonad m => String -> LP m Blocks
fancyverbEnv name = do
options <- option [] keyvals
let kvs = [ (if k == "firstnumber"
then "startFrom"
else k, v) | (k,v) <- options ]
let classes = [ "numberLines" |
lookup "numbers" options == Just "left" ]
let attr = ("",classes,kvs)
codeBlockWith attr <$> verbEnv name
orderedList' :: PandocMonad m => LP m Blocks
orderedList' = try $ do
optional sp
(_, style, delim) <- option (1, DefaultStyle, DefaultDelim) $
try $ char '[' *> anyOrderedListMarker <* char ']'
spaces
optional $ try $ controlSeq "setlength" *> grouped (controlSeq "itemindent") *> braced
spaces
start <- option 1 $ try $ do controlSeq "setcounter"
grouped (string "enum" *> many1 (oneOf "iv"))
optional sp
num <- grouped (many1 digit)
spaces
return (read num + 1 :: Int)
bs <- listenv "enumerate" (many item)
return $ orderedListWith (start, style, delim) bs
paragraph :: PandocMonad m => LP m Blocks
paragraph = do
x <- trimInlines . mconcat <$> many1 inline
if x == mempty
then return mempty
else return $ para x
preamble :: PandocMonad m => LP m Blocks
preamble = mempty <$> manyTill preambleBlock beginDoc
where beginDoc = lookAhead $ try $ controlSeq "begin" *> string "{document}"
preambleBlock = void comment
<|> void sp
<|> void blanklines
<|> void include
<|> void macro
<|> void blockCommand
<|> void anyControlSeq
<|> void braced
<|> void anyChar
-------
-- citations
addPrefix :: [Inline] -> [Citation] -> [Citation]
addPrefix p (k:ks) = k {citationPrefix = p ++ citationPrefix k} : ks
addPrefix _ _ = []
addSuffix :: [Inline] -> [Citation] -> [Citation]
addSuffix s ks@(_:_) =
let k = last ks
in init ks ++ [k {citationSuffix = citationSuffix k ++ s}]
addSuffix _ _ = []
simpleCiteArgs :: PandocMonad m => LP m [Citation]
simpleCiteArgs = try $ do
first <- optionMaybe $ toList <$> opt
second <- optionMaybe $ toList <$> opt
keys <- try $ bgroup *> (manyTill citationLabel egroup)
let (pre, suf) = case (first , second ) of
(Just s , Nothing) -> (mempty, s )
(Just s , Just t ) -> (s , t )
_ -> (mempty, mempty)
conv k = Citation { citationId = k
, citationPrefix = []
, citationSuffix = []
, citationMode = NormalCitation
, citationHash = 0
, citationNoteNum = 0
}
return $ addPrefix pre $ addSuffix suf $ map conv keys
citationLabel :: PandocMonad m => LP m String
citationLabel = optional sp *>
(many1 (satisfy isBibtexKeyChar)
<* optional sp
<* optional (char ',')
<* optional sp)
where isBibtexKeyChar c = isAlphaNum c || c `elem` (".:;?!`'()/*@_+=-[]" :: String)
cites :: PandocMonad m => CitationMode -> Bool -> LP m [Citation]
cites mode multi = try $ do
cits <- if multi
then many1 simpleCiteArgs
else count 1 simpleCiteArgs
let cs = concat cits
return $ case mode of
AuthorInText -> case cs of
(c:rest) -> c {citationMode = mode} : rest
[] -> []
_ -> map (\a -> a {citationMode = mode}) cs
citation :: PandocMonad m => String -> CitationMode -> Bool -> LP m Inlines
citation name mode multi = do
(c,raw) <- withRaw $ cites mode multi
return $ cite c (rawInline "latex" $ "\\" ++ name ++ raw)
complexNatbibCitation :: PandocMonad m => CitationMode -> LP m Inlines
complexNatbibCitation mode = try $ do
let ils = (toList . trimInlines . mconcat) <$>
many (notFollowedBy (oneOf "\\};") >> inline)
let parseOne = try $ do
skipSpaces
pref <- ils
cit' <- inline -- expect a citation
let citlist = toList cit'
cits' <- case citlist of
[Cite cs _] -> return cs
_ -> mzero
suff <- ils
skipSpaces
optional $ char ';'
return $ addPrefix pref $ addSuffix suff cits'
(c:cits, raw) <- withRaw $ grouped parseOne
return $ cite (c{ citationMode = mode }:cits)
(rawInline "latex" $ "\\citetext" ++ raw)
-- tables
parseAligns :: PandocMonad m => LP m [(Alignment, Double, (String, String))]
parseAligns = try $ do
bgroup
let maybeBar = skipMany $ sp <|> () <$ char '|' <|> () <$ (char '@' >> braced)
maybeBar
let cAlign = AlignCenter <$ char 'c'
let lAlign = AlignLeft <$ char 'l'
let rAlign = AlignRight <$ char 'r'
let parAlign = AlignLeft <$ char 'p'
-- algins from tabularx
let xAlign = AlignLeft <$ char 'X'
let mAlign = AlignLeft <$ char 'm'
let bAlign = AlignLeft <$ char 'b'
let alignChar = cAlign <|> lAlign <|> rAlign <|> parAlign
<|> xAlign <|> mAlign <|> bAlign
let alignPrefix = char '>' >> braced
let alignSuffix = char '<' >> braced
let colWidth = try $ do
char '{'
ds <- many1 (oneOf "0123456789.")
spaces
string "\\linewidth"
char '}'
case safeRead ds of
Just w -> return w
Nothing -> return 0.0
let alignSpec = do
spaces
pref <- option "" alignPrefix
spaces
al <- alignChar
width <- colWidth <|> option 0.0 (do s <- braced
pos <- getPosition
report $ SkippedContent s pos
return 0.0)
spaces
suff <- option "" alignSuffix
return (al, width, (pref, suff))
aligns' <- sepEndBy alignSpec maybeBar
spaces
egroup
spaces
return $ aligns'
hline :: PandocMonad m => LP m ()
hline = try $ do
spaces'
controlSeq "hline" <|>
-- booktabs rules:
controlSeq "toprule" <|>
controlSeq "bottomrule" <|>
controlSeq "midrule" <|>
controlSeq "endhead" <|>
controlSeq "endfirsthead"
spaces'
optional $ bracketed (many1 (satisfy (/=']')))
return ()
lbreak :: PandocMonad m => LP m ()
lbreak = () <$ try (spaces' *>
(controlSeq "\\" <|> controlSeq "tabularnewline") <*
spaces')
amp :: PandocMonad m => LP m ()
amp = () <$ try (spaces' *> char '&' <* spaces')
parseTableRow :: PandocMonad m
=> String -- ^ table environment name
-> [(String, String)] -- ^ pref/suffixes
-> LP m [Blocks]
parseTableRow envname prefsufs = try $ do
let cols = length prefsufs
let tableCellRaw = concat <$> many
(do notFollowedBy amp
notFollowedBy lbreak
notFollowedBy $ () <$ try (string ("\\end{" ++ envname ++ "}"))
many1 (noneOf "&%\n\r\\")
<|> try (string "\\&")
<|> count 1 anyChar)
let plainify bs = case toList bs of
[Para ils] -> plain (fromList ils)
_ -> bs
rawcells <- sepBy1 tableCellRaw amp
guard $ length rawcells == cols
let rawcells' = zipWith (\c (p, s) -> p ++ trim c ++ s) rawcells prefsufs
let tableCell = plainify <$> blocks
cells' <- mapM (parseFromString' tableCell) rawcells'
let numcells = length cells'
guard $ numcells <= cols && numcells >= 1
guard $ cells' /= [mempty]
-- note: a & b in a three-column table leaves an empty 3rd cell:
let cells'' = cells' ++ replicate (cols - numcells) mempty
spaces'
return cells''
spaces' :: PandocMonad m => LP m ()
spaces' = spaces *> skipMany (comment *> spaces)
simpTable :: PandocMonad m => String -> Bool -> LP m Blocks
simpTable envname hasWidthParameter = try $ do
when hasWidthParameter $ () <$ (spaces' >> tok)
skipopts
colspecs <- parseAligns
let (aligns, widths, prefsufs) = unzip3 colspecs
let cols = length colspecs
optional $ controlSeq "caption" *> skipopts *> setCaption
optional lbreak
spaces'
skipMany hline
spaces'
header' <- option [] $ try (parseTableRow envname prefsufs <*
lbreak <* many1 hline)
spaces'
rows <- sepEndBy (parseTableRow envname prefsufs)
(lbreak <* optional (skipMany hline))
spaces'
optional $ controlSeq "caption" *> skipopts *> setCaption
optional lbreak
spaces'
let header'' = if null header'
then replicate cols mempty
else header'
lookAhead $ controlSeq "end" -- make sure we're at end
return $ table mempty (zip aligns widths) header'' rows
removeDoubleQuotes :: String -> String
removeDoubleQuotes ('"':xs) =
case reverse xs of
'"':ys -> reverse ys
_ -> '"':xs
removeDoubleQuotes xs = xs
|