5a244bb7b3
IF --parse-raw is selected, these will be parsed as raw latex inlines, rather than bracketed text.
985 lines
32 KiB
Haskell
985 lines
32 KiB
Haskell
{-
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Copyright (C) 2006-2012 John MacFarlane <jgm@berkeley.edu>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-}
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{- |
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Module : Text.Pandoc.Readers.LaTeX
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Copyright : Copyright (C) 2006-2012 John MacFarlane
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License : GNU GPL, version 2 or above
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Maintainer : John MacFarlane <jgm@berkeley.edu>
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Stability : alpha
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Portability : portable
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Conversion of LaTeX to 'Pandoc' document.
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-}
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module Text.Pandoc.Readers.LaTeX ( readLaTeX,
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rawLaTeXInline,
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rawLaTeXBlock,
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handleIncludes
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) where
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import Text.ParserCombinators.Parsec hiding ((<|>), space, many, optional)
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import Text.Pandoc.Definition
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import Text.Pandoc.Shared
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import Text.Pandoc.Parsing
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import qualified Text.Pandoc.UTF8 as UTF8
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import Data.Char ( chr, ord )
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import Control.Monad
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import Text.Pandoc.Builder
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import Data.Char (isLetter, isPunctuation, isSpace)
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import Control.Applicative
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import Data.Monoid
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import System.FilePath (replaceExtension)
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import Data.List (intercalate)
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import qualified Data.Map as M
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-- | Parse LaTeX from string and return 'Pandoc' document.
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readLaTeX :: ParserState -- ^ Parser state, including options for parser
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-> String -- ^ String to parse (assumes @'\n'@ line endings)
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-> Pandoc
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readLaTeX = readWith parseLaTeX
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parseLaTeX :: LP Pandoc
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parseLaTeX = do
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bs <- blocks
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eof
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st <- getState
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let title' = stateTitle st
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let authors' = stateAuthors st
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let date' = stateDate st
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return $ Pandoc (Meta title' authors' date') $ toList bs
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type LP = GenParser Char ParserState
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anyControlSeq :: LP String
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anyControlSeq = do
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char '\\'
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next <- option '\n' anyChar
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name <- case next of
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'\n' -> return ""
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c | isLetter c -> (c:) <$> (many letter <* optional sp)
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| otherwise -> return [c]
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return name
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controlSeq :: String -> LP String
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controlSeq name = try $ do
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char '\\'
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case name of
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"" -> mzero
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[c] | not (isLetter c) -> string [c]
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cs -> string cs <* notFollowedBy letter <* optional sp
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return name
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dimenarg :: LP String
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dimenarg = try $ do
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ch <- option "" $ string "="
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num <- many1 digit
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dim <- oneOfStrings ["pt","pc","in","bp","cm","mm","dd","cc","sp"]
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return $ ch ++ num ++ dim
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sp :: LP ()
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sp = skipMany1 $ satisfy (\c -> c == ' ' || c == '\t')
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<|> (try $ newline >>~ lookAhead anyChar >>~ notFollowedBy blankline)
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isLowerHex :: Char -> Bool
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isLowerHex x = x >= '0' && x <= '9' || x >= 'a' && x <= 'f'
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tildeEscape :: LP Char
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tildeEscape = try $ do
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string "^^"
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c <- satisfy (\x -> x >= '\0' && x <= '\128')
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d <- if isLowerHex c
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then option "" $ count 1 (satisfy isLowerHex)
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else return ""
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if null d
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then case ord c of
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x | x >= 64 && x <= 127 -> return $ chr (x - 64)
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| otherwise -> return $ chr (x + 64)
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else return $ chr $ read ('0':'x':c:d)
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comment :: LP ()
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comment = do
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char '%'
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skipMany (satisfy (/='\n'))
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newline
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return ()
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bgroup :: LP ()
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bgroup = () <$ char '{'
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<|> () <$ controlSeq "bgroup"
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<|> () <$ controlSeq "begingroup"
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egroup :: LP ()
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egroup = () <$ char '}'
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<|> () <$ controlSeq "egroup"
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<|> () <$ controlSeq "endgroup"
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grouped :: Monoid a => LP a -> LP a
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grouped parser = try $ bgroup *> (mconcat <$> manyTill parser egroup)
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braced :: LP String
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braced = bgroup *> (concat <$> manyTill
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( many1 (satisfy (\c -> c /= '\\' && c /= '}' && c /= '{'))
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<|> try (string "\\}")
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<|> try (string "\\{")
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<|> try (string "\\\\")
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<|> ((\x -> "{" ++ x ++ "}") <$> braced)
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<|> count 1 anyChar
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) egroup)
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bracketed :: Monoid a => LP a -> LP a
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bracketed parser = try $ char '[' *> (mconcat <$> manyTill parser (char ']'))
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trim :: String -> String
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trim = removeLeadingTrailingSpace
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mathDisplay :: LP String -> LP Inlines
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mathDisplay p = displayMath <$> (try p >>= applyMacros' . trim)
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mathInline :: LP String -> LP Inlines
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mathInline p = math <$> (try p >>= applyMacros')
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mathChars :: LP String
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mathChars = concat <$>
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many ( many1 (satisfy (\c -> c /= '$' && c /='\\'))
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<|> (\c -> ['\\',c]) <$> (try $ char '\\' *> anyChar)
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)
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double_quote :: LP Inlines
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double_quote = (doubleQuoted . mconcat) <$>
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(try $ string "``" *> manyTill inline (try $ string "''"))
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single_quote :: LP Inlines
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single_quote = char '`' *>
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( try ((singleQuoted . mconcat) <$>
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manyTill inline (try $ char '\'' >> notFollowedBy letter))
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<|> lit "`")
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inline :: LP Inlines
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inline = (mempty <$ comment)
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<|> (space <$ sp)
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<|> inlineText
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<|> inlineCommand
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<|> grouped inline
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<|> (char '-' *> option (str "-")
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((char '-') *> option (str "–") (str "—" <$ char '-')))
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<|> double_quote
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<|> single_quote
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<|> (str "’" <$ char '\'')
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<|> (str "\160" <$ char '~')
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<|> (mathDisplay $ string "$$" *> mathChars <* string "$$")
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<|> (mathInline $ char '$' *> mathChars <* char '$')
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<|> (superscript <$> (char '^' *> tok))
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<|> (subscript <$> (char '_' *> tok))
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<|> (failUnlessLHS *> char '|' *> doLHSverb)
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<|> (str <$> count 1 tildeEscape)
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<|> (str <$> string "]")
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<|> (str <$> string "#") -- TODO print warning?
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<|> (str <$> string "&") -- TODO print warning?
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-- <|> (str <$> count 1 (satisfy (\c -> c /= '\\' && c /='\n' && c /='}' && c /='{'))) -- eat random leftover characters
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inlines :: LP Inlines
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inlines = mconcat <$> many (notFollowedBy (char '}') *> inline)
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block :: LP Blocks
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block = (mempty <$ comment)
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<|> (mempty <$ ((spaceChar <|> newline) *> spaces))
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<|> environment
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<|> mempty <$ macro -- TODO improve macros, make them work everywhere
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<|> blockCommand
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<|> grouped block
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<|> paragraph
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<|> (mempty <$ char '&') -- loose & in table environment
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blocks :: LP Blocks
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blocks = mconcat <$> many block
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blockCommand :: LP Blocks
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blockCommand = try $ do
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name <- anyControlSeq
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star <- option "" (string "*" <* optional sp)
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let name' = name ++ star
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case M.lookup name' blockCommands of
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Just p -> p
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Nothing -> case M.lookup name blockCommands of
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Just p -> p
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Nothing -> mzero
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inBrackets :: Inlines -> Inlines
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inBrackets x = (str "[") <> x <> (str "]")
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-- eat an optional argument and one or more arguments in braces
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ignoreInlines :: String -> (String, LP Inlines)
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ignoreInlines name = (name, doraw <|> (mempty <$ optargs))
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where optargs = skipopts *> skipMany (try $ optional sp *> braced)
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contseq = '\\':name
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doraw = (rawInline "latex" . (contseq ++) . snd) <$>
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(getState >>= guard . stateParseRaw >> (withRaw optargs))
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ignoreBlocks :: String -> (String, LP Blocks)
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ignoreBlocks name = (name, doraw <|> (mempty <$ optargs))
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where optargs = skipopts *> skipMany (try $ optional sp *> braced)
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contseq = '\\':name
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doraw = (rawBlock "latex" . (contseq ++) . snd) <$>
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(getState >>= guard . stateParseRaw >> (withRaw optargs))
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blockCommands :: M.Map String (LP Blocks)
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blockCommands = M.fromList $
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[ ("par", mempty <$ skipopts)
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, ("title", mempty <$ (skipopts *> tok >>= addTitle))
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, ("subtitle", mempty <$ (skipopts *> tok >>= addSubtitle))
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, ("author", mempty <$ (skipopts *> authors))
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-- -- in letter class, temp. store address & sig as title, author
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, ("address", mempty <$ (skipopts *> tok >>= addTitle))
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, ("signature", mempty <$ (skipopts *> authors))
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, ("date", mempty <$ (skipopts *> tok >>= addDate))
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-- sectioning
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, ("chapter", updateState (\s -> s{ stateHasChapters = True }) *> section 0)
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, ("section", section 1)
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, ("subsection", section 2)
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, ("subsubsection", section 3)
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, ("paragraph", section 4)
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, ("subparagraph", section 5)
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-- beamer slides
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, ("frametitle", section 3)
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, ("framesubtitle", section 4)
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-- letters
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, ("opening", (para . trimInlines) <$> (skipopts *> tok))
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, ("closing", skipopts *> closing)
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--
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, ("rule", skipopts *> tok *> tok *> pure horizontalRule)
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, ("begin", mzero) -- these are here so they won't be interpreted as inline
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, ("end", mzero)
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, ("item", skipopts *> loose_item)
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, ("documentclass", skipopts *> braced *> preamble)
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] ++ map ignoreBlocks
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-- these commands will be ignored unless --parse-raw is specified,
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-- in which case they will appear as raw latex blocks
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[ "newcommand", "renewcommand", "newenvironment", "renewenvironment"
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-- newcommand, etc. should be parsed by macro, but we need this
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-- here so these aren't parsed as inline commands to ignore
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, "special", "pdfannot", "pdfstringdef"
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, "bibliography", "bibliographystyle"
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, "maketitle", "makeindex", "makeglossary"
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, "addcontentsline", "addtocontents", "addtocounter"
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-- \ignore{} is used conventionally in literate haskell for definitions
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-- that are to be processed by the compiler but not printed.
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, "ignore"
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, "hyperdef"
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, "noindent"
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, "markboth", "markright", "markleft"
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, "hspace", "vspace"
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]
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addTitle :: Inlines -> LP ()
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addTitle tit = updateState (\s -> s{ stateTitle = toList tit })
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addSubtitle :: Inlines -> LP ()
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addSubtitle tit = updateState (\s -> s{ stateTitle = stateTitle s ++
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toList (str ":" <> linebreak <> tit) })
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authors :: LP ()
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authors = try $ do
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char '{'
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let oneAuthor = mconcat <$>
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many1 (notFollowedBy' (controlSeq "and") >> inline)
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auths <- sepBy oneAuthor (controlSeq "and")
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char '}'
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updateState (\s -> s { stateAuthors = map (normalizeSpaces . toList) auths })
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addDate :: Inlines -> LP ()
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addDate dat = updateState (\s -> s{ stateDate = toList dat })
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section :: Int -> LP Blocks
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section lvl = do
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hasChapters <- stateHasChapters `fmap` getState
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let lvl' = if hasChapters then lvl + 1 else lvl
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skipopts
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contents <- grouped inline
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return $ header lvl' contents
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inlineCommand :: LP Inlines
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inlineCommand = try $ do
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name <- anyControlSeq
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guard $ not $ isBlockCommand name
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parseRaw <- stateParseRaw `fmap` getState
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star <- option "" (string "*")
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let name' = name ++ star
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let rawargs = withRaw (skipopts *> option "" dimenarg
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*> many braced) >>= applyMacros' . snd
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let raw = if parseRaw
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then (rawInline "latex" . (('\\':name') ++)) <$> rawargs
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else mempty <$> rawargs
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case M.lookup name' inlineCommands of
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Just p -> p <|> raw
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Nothing -> case M.lookup name inlineCommands of
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Just p -> p <|> raw
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Nothing -> raw
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unlessParseRaw :: LP ()
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unlessParseRaw = getState >>= guard . not . stateParseRaw
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isBlockCommand :: String -> Bool
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isBlockCommand s = maybe False (const True) $ M.lookup s blockCommands
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inlineCommands :: M.Map String (LP Inlines)
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inlineCommands = M.fromList $
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[ ("emph", emph <$> tok)
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, ("textit", emph <$> tok)
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, ("textsc", smallcaps <$> tok)
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, ("sout", strikeout <$> tok)
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, ("textsuperscript", superscript <$> tok)
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, ("textsubscript", subscript <$> tok)
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, ("textbackslash", lit "\\")
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, ("backslash", lit "\\")
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, ("textbf", strong <$> tok)
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, ("ldots", lit "…")
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, ("dots", lit "…")
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, ("mdots", lit "…")
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, ("sim", lit "~")
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, ("label", unlessParseRaw >> (inBrackets <$> tok))
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, ("ref", unlessParseRaw >> (inBrackets <$> tok))
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, ("(", mathInline $ manyTill anyChar (try $ string "\\)"))
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, ("[", mathDisplay $ manyTill anyChar (try $ string "\\]"))
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, ("ensuremath", mathInline $ braced)
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, ("P", lit "¶")
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, ("S", lit "§")
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, ("$", lit "$")
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, ("%", lit "%")
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, ("&", lit "&")
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, ("#", lit "#")
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, ("_", lit "_")
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, ("{", lit "{")
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, ("}", lit "}")
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-- old TeX commands
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, ("em", emph <$> inlines)
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, ("it", emph <$> inlines)
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, ("sl", emph <$> inlines)
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, ("bf", strong <$> inlines)
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, ("rm", inlines)
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, ("itshape", emph <$> inlines)
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, ("slshape", emph <$> inlines)
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, ("scshape", smallcaps <$> inlines)
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, ("bfseries", strong <$> inlines)
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, ("/", pure mempty) -- italic correction
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, ("aa", lit "å")
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, ("AA", lit "Å")
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, ("ss", lit "ß")
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, ("o", lit "ø")
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, ("O", lit "Ø")
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, ("L", lit "Ł")
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, ("l", lit "ł")
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, ("ae", lit "æ")
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, ("AE", lit "Æ")
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, ("pounds", lit "£")
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, ("euro", lit "€")
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||
, ("copyright", lit "©")
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||
, ("`", option (str "`") $ try $ tok >>= accent grave)
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||
, ("'", option (str "'") $ try $ tok >>= accent acute)
|
||
, ("^", option (str "^") $ try $ tok >>= accent circ)
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, ("~", option (str "~") $ try $ tok >>= accent tilde)
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, ("\"", option (str "\"") $ try $ tok >>= accent umlaut)
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, (".", option (str ".") $ try $ tok >>= accent dot)
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, ("=", option (str "=") $ try $ tok >>= accent macron)
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, ("c", option (str "c") $ try $ tok >>= accent cedilla)
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, ("i", lit "i")
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, ("\\", linebreak <$ (optional (bracketed inline) *> optional sp))
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, (",", pure mempty)
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, ("@", pure mempty)
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||
, (" ", lit "\160")
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||
, ("ps", pure $ str "PS." <> space)
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||
, ("TeX", lit "TeX")
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||
, ("LaTeX", lit "LaTeX")
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||
, ("bar", lit "|")
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||
, ("textless", lit "<")
|
||
, ("textgreater", lit ">")
|
||
, ("thanks", (note . mconcat) <$> (char '{' *> manyTill block (char '}')))
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, ("footnote", (note . mconcat) <$> (char '{' *> manyTill block (char '}')))
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||
, ("verb", doverb)
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, ("lstinline", doverb)
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||
, ("texttt", (code . stringify . toList) <$> tok)
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||
, ("url", (unescapeURL <$> braced) >>= \url ->
|
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pure (link url "" (codeWith ("",["url"],[]) url)))
|
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, ("href", (unescapeURL <$> braced <* optional sp) >>= \url ->
|
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tok >>= \lab ->
|
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pure (link url "" lab))
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, ("includegraphics", skipopts *> (unescapeURL <$> braced) >>=
|
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(\src -> pure (image src "" (str "image"))))
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, ("cite", citation "cite" NormalCitation False)
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||
, ("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)
|
||
, ("footcite", citation "footcite" NormalCitation False)
|
||
, ("parencite", citation "parencite" NormalCitation False)
|
||
, ("supercite", citation "supercite" NormalCitation False)
|
||
, ("footcitetext", 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", citation "footcites" NormalCitation True)
|
||
, ("parencites", citation "parencites" NormalCitation True)
|
||
, ("supercites", citation "supercites" NormalCitation True)
|
||
, ("footcitetexts", citation "footcitetexts" NormalCitation True)
|
||
, ("Autocite", citation "Autocite" NormalCitation False)
|
||
, ("Footcite", citation "Footcite" NormalCitation False)
|
||
, ("Parencite", citation "Parencite" NormalCitation False)
|
||
, ("Supercite", citation "Supercite" NormalCitation False)
|
||
, ("Footcitetext", 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", citation "Footcitetexts" NormalCitation True)
|
||
, ("citetext", complexNatbibCitation NormalCitation)
|
||
, ("citeauthor", (try (tok *> optional sp *> controlSeq "citetext") *>
|
||
complexNatbibCitation AuthorInText)
|
||
<|> citation "citeauthor" AuthorInText False)
|
||
] ++ map ignoreInlines
|
||
-- these commands will be ignored unless --parse-raw is specified,
|
||
-- in which case they will appear as raw latex blocks:
|
||
[ "index", "nocite" ]
|
||
|
||
unescapeURL :: String -> String
|
||
unescapeURL ('\\':x:xs) | isEscapable x = x:unescapeURL xs
|
||
where isEscapable '%' = True
|
||
isEscapable '#' = True
|
||
isEscapable _ = False
|
||
unescapeURL (x:xs) = x:unescapeURL xs
|
||
unescapeURL [] = ""
|
||
|
||
doverb :: LP Inlines
|
||
doverb = do
|
||
marker <- anyChar
|
||
code <$> manyTill (satisfy (/='\n')) (char marker)
|
||
|
||
doLHSverb :: LP Inlines
|
||
doLHSverb = codeWith ("",["haskell"],[]) <$> manyTill (satisfy (/='\n')) (char '|')
|
||
|
||
lit :: String -> LP Inlines
|
||
lit = pure . str
|
||
|
||
accent :: (Char -> Char) -> Inlines -> LP Inlines
|
||
accent f ils =
|
||
case toList ils of
|
||
(Str (x:xs) : ys) -> return $ fromList $ (Str (f x : xs) : ys)
|
||
[] -> mzero
|
||
_ -> return ils
|
||
|
||
grave :: Char -> Char
|
||
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 -> Char
|
||
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 -> Char
|
||
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 -> Char
|
||
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 -> Char
|
||
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
|
||
|
||
dot :: Char -> Char
|
||
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 -> Char
|
||
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 -> Char
|
||
cedilla 'c' = 'ç'
|
||
cedilla 'C' = 'Ç'
|
||
cedilla 's' = 'ş'
|
||
cedilla 'S' = 'Ş'
|
||
cedilla c = c
|
||
|
||
tok :: LP Inlines
|
||
tok = try $ grouped inline <|> inlineCommand <|> str <$> (count 1 $ inlineChar)
|
||
|
||
opt :: LP Inlines
|
||
opt = bracketed inline <* optional sp
|
||
|
||
skipopts :: LP ()
|
||
skipopts = skipMany opt
|
||
|
||
inlineText :: LP Inlines
|
||
inlineText = str <$> many1 inlineChar
|
||
|
||
inlineChar :: LP Char
|
||
inlineChar = satisfy $ \c ->
|
||
not (c == '\\' || c == '$' || c == '%' || c == '^' || c == '_' ||
|
||
c == '&' || c == '~' || c == '#' || c == '{' || c == '}' ||
|
||
c == '^' || c == '\'' || c == '`' || c == '-' || c == ']' ||
|
||
c == ' ' || c == '\t' || c == '\n' )
|
||
|
||
environment :: LP Blocks
|
||
environment = do
|
||
controlSeq "begin"
|
||
name <- braced
|
||
case M.lookup name environments of
|
||
Just p -> p <|> rawEnv name
|
||
Nothing -> rawEnv name
|
||
|
||
rawEnv :: String -> LP Blocks
|
||
rawEnv name = do
|
||
let addBegin x = "\\begin{" ++ name ++ "}" ++ x
|
||
parseRaw <- stateParseRaw `fmap` getState
|
||
if parseRaw
|
||
then (rawBlock "latex" . addBegin) <$>
|
||
(withRaw (env name blocks) >>= applyMacros' . snd)
|
||
else env name blocks
|
||
|
||
-- | Replace "include" commands with file contents.
|
||
handleIncludes :: String -> IO String
|
||
handleIncludes [] = return []
|
||
handleIncludes ('\\':xs) =
|
||
case runParser include defaultParserState "input" ('\\':xs) of
|
||
Right (fs, rest) -> do let getfile f = catch (UTF8.readFile f)
|
||
(\_ -> return "")
|
||
yss <- mapM getfile fs
|
||
(intercalate "\n" yss ++) `fmap`
|
||
handleIncludes rest
|
||
_ -> case runParser (verbCmd <|> verbatimEnv) defaultParserState
|
||
"input" ('\\':xs) of
|
||
Right (r, rest) -> (r ++) `fmap` handleIncludes rest
|
||
_ -> ('\\':) `fmap` handleIncludes xs
|
||
handleIncludes (x:xs) = (x:) `fmap` handleIncludes xs
|
||
|
||
include :: LP ([FilePath], String)
|
||
include = do
|
||
name <- controlSeq "include" <|> controlSeq "usepackage"
|
||
skipopts
|
||
fs <- (splitBy (==',')) <$> braced
|
||
rest <- getInput
|
||
let fs' = if name == "include"
|
||
then map (flip replaceExtension ".tex") fs
|
||
else map (flip replaceExtension ".sty") fs
|
||
return (fs', rest)
|
||
|
||
verbCmd :: LP (String, String)
|
||
verbCmd = do
|
||
(_,r) <- withRaw $ do
|
||
controlSeq "verb"
|
||
c <- anyChar
|
||
manyTill anyChar (char c)
|
||
rest <- getInput
|
||
return (r, rest)
|
||
|
||
verbatimEnv :: LP (String, String)
|
||
verbatimEnv = do
|
||
(_,r) <- withRaw $ do
|
||
controlSeq "begin"
|
||
name <- braced
|
||
guard $ name == "verbatim" || name == "Verbatim" ||
|
||
name == "lstlisting" || name == "minted"
|
||
verbEnv name
|
||
rest <- getInput
|
||
return (r,rest)
|
||
|
||
rawLaTeXBlock :: GenParser Char ParserState String
|
||
rawLaTeXBlock = snd <$> withRaw (environment <|> blockCommand)
|
||
|
||
rawLaTeXInline :: GenParser Char ParserState Inline
|
||
rawLaTeXInline = do
|
||
(res, raw) <- withRaw inlineCommand
|
||
if res == mempty
|
||
then return (Str "")
|
||
else RawInline "latex" <$> (applyMacros' raw)
|
||
|
||
environments :: M.Map String (LP Blocks)
|
||
environments = M.fromList
|
||
[ ("document", env "document" blocks <* skipMany anyChar)
|
||
, ("letter", env "letter" letter_contents)
|
||
, ("center", env "center" blocks)
|
||
, ("tabular", env "tabular" simpTable)
|
||
, ("quote", blockQuote <$> env "quote" blocks)
|
||
, ("quotation", blockQuote <$> env "quotation" blocks)
|
||
, ("verse", blockQuote <$> env "verse" blocks)
|
||
, ("itemize", bulletList <$> listenv "itemize" (many item))
|
||
, ("description", definitionList <$> listenv "description" (many descItem))
|
||
, ("enumerate", ordered_list)
|
||
, ("code", failUnlessLHS *>
|
||
(codeBlockWith ("",["sourceCode","literate","haskell"],[]) <$>
|
||
verbEnv "code"))
|
||
, ("verbatim", codeBlock <$> (verbEnv "verbatim"))
|
||
, ("Verbatim", codeBlock <$> (verbEnv "Verbatim"))
|
||
, ("lstlisting", codeBlock <$> (verbEnv "lstlisting"))
|
||
, ("minted", liftA2 (\l c -> codeBlockWith ("",[l],[]) c)
|
||
(grouped (many1 $ satisfy (/= '}'))) (verbEnv "minted"))
|
||
, ("displaymath", mathEnv Nothing "displaymath")
|
||
, ("equation", mathEnv Nothing "equation")
|
||
, ("equation*", mathEnv Nothing "equation*")
|
||
, ("gather", mathEnv (Just "gathered") "gather")
|
||
, ("gather*", mathEnv (Just "gathered") "gather*")
|
||
, ("multline", mathEnv (Just "gathered") "multline")
|
||
, ("multline*", mathEnv (Just "gathered") "multline*")
|
||
, ("eqnarray", mathEnv (Just "aligned") "eqnarray")
|
||
, ("eqnarray*", mathEnv (Just "aligned") "eqnarray*")
|
||
, ("align", mathEnv (Just "aligned") "align")
|
||
, ("align*", mathEnv (Just "aligned") "align*")
|
||
, ("alignat", mathEnv (Just "aligned") "alignat")
|
||
, ("alignat*", mathEnv (Just "aligned") "alignat*")
|
||
]
|
||
|
||
letter_contents :: LP Blocks
|
||
letter_contents = do
|
||
bs <- blocks
|
||
st <- getState
|
||
-- add signature (author) and address (title)
|
||
let addr = case stateTitle st of
|
||
[] -> mempty
|
||
x -> para $ trimInlines $ fromList x
|
||
updateState $ \s -> s{ stateAuthors = [], stateTitle = [] }
|
||
return $ addr <> bs -- sig added by \closing
|
||
|
||
closing :: LP Blocks
|
||
closing = do
|
||
contents <- tok
|
||
st <- getState
|
||
let sigs = case stateAuthors st of
|
||
[] -> mempty
|
||
xs -> para $ trimInlines $ fromList
|
||
$ intercalate [LineBreak] xs
|
||
return $ para (trimInlines contents) <> sigs
|
||
|
||
item :: LP Blocks
|
||
item = blocks *> controlSeq "item" *> skipopts *> blocks
|
||
|
||
loose_item :: LP Blocks
|
||
loose_item = do
|
||
ctx <- stateParserContext `fmap` getState
|
||
if ctx == ListItemState
|
||
then mzero
|
||
else return mempty
|
||
|
||
descItem :: LP (Inlines, [Blocks])
|
||
descItem = do
|
||
blocks -- skip blocks before item
|
||
controlSeq "item"
|
||
optional sp
|
||
ils <- opt
|
||
bs <- blocks
|
||
return (ils, [bs])
|
||
|
||
env :: String -> LP a -> LP a
|
||
env name p = p <* (controlSeq "end" *> braced >>= guard . (== name))
|
||
|
||
listenv :: String -> LP a -> LP 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
|
||
|
||
mathEnv :: Maybe String -> String -> LP Blocks
|
||
mathEnv innerEnv name = para <$> mathDisplay (inner <$> verbEnv name)
|
||
where inner x = case innerEnv of
|
||
Nothing -> x
|
||
Just y -> "\\begin{" ++ y ++ "}\n" ++ x ++
|
||
"\\end{" ++ y ++ "}"
|
||
|
||
verbEnv :: String -> LP String
|
||
verbEnv name = do
|
||
skipopts
|
||
optional blankline
|
||
let endEnv = try $ controlSeq "end" *> braced >>= guard . (== name)
|
||
res <- manyTill anyChar endEnv
|
||
return $ stripTrailingNewlines res
|
||
|
||
ordered_list :: LP Blocks
|
||
ordered_list = 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 :: LP Blocks
|
||
paragraph = do
|
||
x <- mconcat <$> many1 inline
|
||
if x == mempty
|
||
then return mempty
|
||
else return $ para $ trimInlines x
|
||
|
||
preamble :: LP Blocks
|
||
preamble = mempty <$> manyTill preambleBlock beginDoc
|
||
where beginDoc = lookAhead $ controlSeq "begin" *> string "{document}"
|
||
preambleBlock = (mempty <$ comment)
|
||
<|> (mempty <$ sp)
|
||
<|> (mempty <$ blanklines)
|
||
<|> (mempty <$ macro)
|
||
<|> blockCommand
|
||
<|> (mempty <$ anyControlSeq)
|
||
<|> (mempty <$ braced)
|
||
<|> (mempty <$ 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
|
||
s' = case s of
|
||
(Str (c:_):_)
|
||
| not (isPunctuation c || isSpace c) -> Str "," : Space : s
|
||
_ -> s
|
||
in init ks ++ [k {citationSuffix = citationSuffix k ++ s'}]
|
||
addSuffix _ _ = []
|
||
|
||
simpleCiteArgs :: LP [Citation]
|
||
simpleCiteArgs = try $ do
|
||
first <- optionMaybe $ toList <$> opt
|
||
second <- optionMaybe $ toList <$> opt
|
||
char '{'
|
||
keys <- manyTill citationLabel (char '}')
|
||
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 :: LP String
|
||
citationLabel = trim <$>
|
||
(many1 (satisfy $ \c -> c /=',' && c /='}') <* optional (char ',') <* optional sp)
|
||
|
||
cites :: CitationMode -> Bool -> LP [Citation]
|
||
cites mode multi = try $ do
|
||
cits <- if multi
|
||
then many1 simpleCiteArgs
|
||
else count 1 simpleCiteArgs
|
||
let (c:cs) = concat cits
|
||
return $ case mode of
|
||
AuthorInText -> c {citationMode = mode} : cs
|
||
_ -> map (\a -> a {citationMode = mode}) (c:cs)
|
||
|
||
citation :: String -> CitationMode -> Bool -> LP Inlines
|
||
citation name mode multi = do
|
||
(c,raw) <- withRaw $ cites mode multi
|
||
return $ cite c (rawInline "latex" $ "\\" ++ name ++ raw)
|
||
|
||
complexNatbibCitation :: CitationMode -> LP 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 :: LP [Alignment]
|
||
parseAligns = try $ do
|
||
char '{'
|
||
optional $ char '|'
|
||
let cAlign = AlignCenter <$ char 'c'
|
||
let lAlign = AlignLeft <$ char 'l'
|
||
let rAlign = AlignRight <$ char 'r'
|
||
let alignChar = optional sp *> (cAlign <|> lAlign <|> rAlign)
|
||
aligns' <- sepEndBy alignChar (optional $ char '|')
|
||
spaces
|
||
char '}'
|
||
spaces
|
||
return aligns'
|
||
|
||
hline :: LP ()
|
||
hline = () <$ (try $ spaces >> controlSeq "hline")
|
||
|
||
lbreak :: LP ()
|
||
lbreak = () <$ (try $ spaces *> controlSeq "\\")
|
||
|
||
amp :: LP ()
|
||
amp = () <$ (try $ spaces *> char '&')
|
||
|
||
parseTableRow :: Int -- ^ number of columns
|
||
-> LP [Blocks]
|
||
parseTableRow cols = try $ do
|
||
let tableCellInline = notFollowedBy (amp <|> lbreak) >> inline
|
||
let tableCell = (plain . trimInlines . mconcat) <$> many tableCellInline
|
||
cells' <- sepBy tableCell amp
|
||
guard $ length cells' == cols
|
||
spaces
|
||
return cells'
|
||
|
||
simpTable :: LP Blocks
|
||
simpTable = try $ do
|
||
spaces
|
||
aligns <- parseAligns
|
||
let cols = length aligns
|
||
optional hline
|
||
header' <- option [] $ try (parseTableRow cols <* lbreak <* hline)
|
||
rows <- sepEndBy (parseTableRow cols) (lbreak <* optional hline)
|
||
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 (repeat 0)) header'' rows
|
||
|