diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Text/Pandoc/Readers/Org/Inlines.hs | 187 |
1 files changed, 42 insertions, 145 deletions
diff --git a/src/Text/Pandoc/Readers/Org/Inlines.hs b/src/Text/Pandoc/Readers/Org/Inlines.hs index 6862dd71e..2366aa290 100644 --- a/src/Text/Pandoc/Readers/Org/Inlines.hs +++ b/src/Text/Pandoc/Readers/Org/Inlines.hs @@ -32,10 +32,9 @@ import Text.TeXMath (DisplayType (..), readTeX, writePandoc) import Text.Pandoc.Sources (ToSources(..)) import qualified Text.TeXMath.Readers.MathML.EntityMap as MathMLEntityMap -import Control.Monad (guard, mplus, mzero, unless, void, when) +import Control.Monad (guard, mplus, mzero, unless, when) import Control.Monad.Trans (lift) import Data.Char (isAlphaNum, isSpace) -import Data.List (intersperse) import qualified Data.Map as M import Data.Text (Text) import qualified Data.Text as T @@ -148,32 +147,57 @@ endline = try $ do -- Citations -- --- The state of citations is a bit confusing due to the lack of an official --- syntax and multiple syntaxes coexisting. The pandocOrgCite syntax was the --- first to be implemented here and is almost identical to Markdown's citation --- syntax. The org-ref package is in wide use to handle citations, but the --- syntax is a bit limiting and not quite as simple to write. The --- semi-official Org-mode citation syntax is based on John MacFarlane's Pandoc --- sytax and Org-oriented enhancements contributed by Richard Lawrence and --- others. It's dubbed Berkeley syntax due the place of activity of its main --- contributors. All this should be consolidated once an official Org-mode --- citation syntax has emerged. +-- We first try to parse official org-cite citations, then fall +-- back to org-ref citations (which are still in wide use). cite :: PandocMonad m => OrgParser m (F Inlines) -cite = try $ berkeleyCite <|> do +cite = try $ do guardEnabled Ext_citations (cs, raw) <- withRaw $ choice - [ pandocOrgCite + [ orgCite , orgRefCite - , berkeleyTextualCite ] return $ flip B.cite (B.text raw) <$> cs --- | A citation in Pandoc Org-mode style (@[prefix \@citekey suffix]@). -pandocOrgCite :: PandocMonad m => OrgParser m (F [Citation]) -pandocOrgCite = try $ +-- | A citation in org-cite style +orgCite :: PandocMonad m => OrgParser m (F [Citation]) +orgCite = try $ char '[' *> skipSpaces *> citeList <* skipSpaces <* char ']' +citeList :: PandocMonad m => OrgParser m (F [Citation]) +citeList = sequence <$> sepEndBy1 citation (try $ char ';' *> skipSpaces) + +citation :: PandocMonad m => OrgParser m (F Citation) +citation = try $ do + pref <- prefix + (suppress_author, key) <- citeKey False + suff <- suffix + return $ do + x <- pref + y <- suff + return Citation + { citationId = key + , citationPrefix = B.toList x + , citationSuffix = B.toList y + , citationMode = if suppress_author + then SuppressAuthor + else NormalCitation + , citationNoteNum = 0 + , citationHash = 0 + } + where + prefix = trimInlinesF . mconcat <$> + manyTill inline (char ']' <|> (']' <$ lookAhead (citeKey False))) + suffix = try $ do + hasSpace <- option False (notFollowedBy nonspaceChar >> return True) + skipSpaces + rest <- trimInlinesF . mconcat <$> + many (notFollowedBy (oneOf ";]") *> inline) + return $ if hasSpace + then (B.space <>) <$> rest + else rest + + orgRefCite :: PandocMonad m => OrgParser m (F [Citation]) orgRefCite = try $ choice [ normalOrgRefCite @@ -201,100 +225,6 @@ normalOrgRefCite = try $ do , citationHash = 0 } --- | Read an Berkeley-style Org-mode citation. Berkeley citation style was --- develop and adjusted to Org-mode style by John MacFarlane and Richard --- Lawrence, respectively, both philosophers at UC Berkeley. -berkeleyCite :: PandocMonad m => OrgParser m (F Inlines) -berkeleyCite = try $ do - bcl <- berkeleyCitationList - return $ do - parens <- berkeleyCiteParens <$> bcl - prefix <- berkeleyCiteCommonPrefix <$> bcl - suffix <- berkeleyCiteCommonSuffix <$> bcl - citationList <- berkeleyCiteCitations <$> bcl - return $ - if parens - then toCite - . maybe id (alterFirst . prependPrefix) prefix - . maybe id (alterLast . appendSuffix) suffix - $ citationList - else maybe mempty (<> " ") prefix - <> toListOfCites (map toInTextMode citationList) - <> maybe mempty (", " <>) suffix - where - toCite :: [Citation] -> Inlines - toCite cs = B.cite cs mempty - - toListOfCites :: [Citation] -> Inlines - toListOfCites = mconcat . intersperse ", " . map (\c -> B.cite [c] mempty) - - toInTextMode :: Citation -> Citation - toInTextMode c = c { citationMode = AuthorInText } - - alterFirst, alterLast :: (a -> a) -> [a] -> [a] - alterFirst _ [] = [] - alterFirst f (c:cs) = f c : cs - alterLast f = reverse . alterFirst f . reverse - - prependPrefix, appendSuffix :: Inlines -> Citation -> Citation - prependPrefix pre c = c { citationPrefix = B.toList pre <> citationPrefix c } - appendSuffix suf c = c { citationSuffix = citationSuffix c <> B.toList suf } - -data BerkeleyCitationList = BerkeleyCitationList - { berkeleyCiteParens :: Bool - , berkeleyCiteCommonPrefix :: Maybe Inlines - , berkeleyCiteCommonSuffix :: Maybe Inlines - , berkeleyCiteCitations :: [Citation] - } -berkeleyCitationList :: PandocMonad m => OrgParser m (F BerkeleyCitationList) -berkeleyCitationList = try $ do - char '[' - parens <- choice [ False <$ berkeleyBareTag, True <$ berkeleyParensTag ] - char ':' - skipSpaces - commonPrefix <- optionMaybe (try $ citationListPart <* char ';') - citations <- citeList - commonSuffix <- optionMaybe (try citationListPart) - char ']' - return (BerkeleyCitationList parens - <$> sequence commonPrefix - <*> sequence commonSuffix - <*> citations) - where - citationListPart :: PandocMonad m => OrgParser m (F Inlines) - citationListPart = fmap (trimInlinesF . mconcat) . try . many1 $ do - notFollowedBy' $ citeKey False - notFollowedBy (oneOf ";]") - inline - -berkeleyBareTag :: PandocMonad m => OrgParser m () -berkeleyBareTag = try $ void berkeleyBareTag' - -berkeleyParensTag :: PandocMonad m => OrgParser m () -berkeleyParensTag = try . void $ enclosedByPair1 '(' ')' berkeleyBareTag' - -berkeleyBareTag' :: PandocMonad m => OrgParser m () -berkeleyBareTag' = try $ void (string "cite") - -berkeleyTextualCite :: PandocMonad m => OrgParser m (F [Citation]) -berkeleyTextualCite = try $ do - (suppressAuthor, key) <- citeKey False - returnF . return $ Citation - { citationId = key - , citationPrefix = mempty - , citationSuffix = mempty - , citationMode = if suppressAuthor then SuppressAuthor else AuthorInText - , citationNoteNum = 0 - , citationHash = 0 - } - --- The following is what a Berkeley-style bracketed textual citation parser --- would look like. However, as these citations are a subset of Pandoc's Org --- citation style, this isn't used. --- berkeleyBracketedTextualCite :: PandocMonad m => OrgParser m (F [Citation]) --- berkeleyBracketedTextualCite = try . (fmap head) $ --- enclosedByPair1 '[' ']' berkeleyTextualCite - -- | Read a link-like org-ref style citation. The citation includes pre and -- post text. However, multiple citations are not possible due to limitations -- in the syntax. @@ -345,39 +275,6 @@ orgRefCiteMode = , ("citeyear", SuppressAuthor) ] -citeList :: PandocMonad m => OrgParser m (F [Citation]) -citeList = sequence <$> sepEndBy1 citation (try $ char ';' *> skipSpaces) - -citation :: PandocMonad m => OrgParser m (F Citation) -citation = try $ do - pref <- prefix - (suppress_author, key) <- citeKey False - suff <- suffix - return $ do - x <- pref - y <- suff - return Citation - { citationId = key - , citationPrefix = B.toList x - , citationSuffix = B.toList y - , citationMode = if suppress_author - then SuppressAuthor - else NormalCitation - , citationNoteNum = 0 - , citationHash = 0 - } - where - prefix = trimInlinesF . mconcat <$> - manyTill inline (char ']' <|> (']' <$ lookAhead (citeKey False))) - suffix = try $ do - hasSpace <- option False (notFollowedBy nonspaceChar >> return True) - skipSpaces - rest <- trimInlinesF . mconcat <$> - many (notFollowedBy (oneOf ";]") *> inline) - return $ if hasSpace - then (B.space <>) <$> rest - else rest - footnote :: PandocMonad m => OrgParser m (F Inlines) footnote = try $ do note <- inlineNote <|> referencedNote |