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{-# LANGUAGE PatternGuards #-}
{-
Copyright (C) 2008 Andrea Rossato <andrea.rossato@ing.unitn.it>
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.Biblio
Copyright : Copyright (C) 2008 Andrea Rossato
License : GNU GPL, version 2 or above
Maintainer : Andrea Rossato <andrea.rossato@unitn.it>
Stability : alpha
Portability : portable
-}
module Text.Pandoc.Biblio ( processBiblio ) where
import Control.Monad ( when )
import Data.List
import Data.Unique
import qualified Data.Map as M
import Text.CSL hiding ( Cite(..), Citation(..) )
import qualified Text.CSL as CSL ( Cite(..) )
import Text.Pandoc.Definition
-- | Process a 'Pandoc' document by adding citations formatted
-- according to a CSL style, using 'citeproc' from citeproc-hs.
processBiblio :: String -> [Reference] -> Pandoc -> IO Pandoc
processBiblio cf r p
= if null r then return p
else do
when (null cf) $ error "Missing the needed citation style file"
csl <- readCSLFile cf
p' <- processWithM setHash p
let (nts,grps) = if styleClass csl /= "note"
then (,) [] $ queryWith getCitation p'
else let cits = queryWith getCite p'
ncits = map (queryWith getCite) $ queryWith getNote p'
needNt = cits \\ concat ncits
in (,) needNt $ getNoteCitations needNt p'
result = citeproc csl r (setNearNote csl $ map (map toCslCite) grps)
cits_map = M.fromList $ zip grps (citations result)
biblioList = map (renderPandoc' csl) (bibliography result)
Pandoc m b = processWith (procInlines $ processCite csl cits_map) p'
return . generateNotes nts . Pandoc m $ b ++ biblioList
-- | Substitute 'Cite' elements with formatted citations.
processCite :: Style -> M.Map [Citation] [FormattedOutput] -> [Inline] -> [Inline]
processCite _ _ [] = []
processCite s cs (i:is)
| Cite t _ <- i = process t ++ processCite s cs is
| otherwise = i : processCite s cs is
where
process t = case M.lookup t cs of
Just x -> if isTextualCitation t && x /= []
then renderPandoc s [head x] ++ [Space] ++
[Cite t $ renderPandoc s $ tail x]
else [Cite t $ renderPandoc s x]
Nothing -> [Str ("Error processing " ++ show t)]
isTextualCitation :: [Citation] -> Bool
isTextualCitation (c:_) = citationMode c == AuthorInText
isTextualCitation _ = False
-- | Retrieve all citations from a 'Pandoc' docuument. To be used with
-- 'queryWith'.
getCitation :: Inline -> [[Citation]]
getCitation i | Cite t _ <- i = [t]
| otherwise = []
getNote :: Inline -> [Inline]
getNote i | Note _ <- i = [i]
| otherwise = []
getCite :: Inline -> [Inline]
getCite i | Cite _ _ <- i = [i]
| otherwise = []
getNoteCitations :: [Inline] -> Pandoc -> [[Citation]]
getNoteCitations needNote
= let mvCite i = if i `elem` needNote then Note [Para [i]] else i
setNote = processWith mvCite
getCits = concat . flip (zipWith $ setCiteNoteNum) [1..] .
map (queryWith getCite) . queryWith getNote . setNote
in queryWith getCitation . getCits
setHash :: Citation -> IO Citation
setHash (Citation i p l cm nn _)
= hashUnique `fmap` newUnique >>= return . Citation i p l cm nn
generateNotes :: [Inline] -> Pandoc -> Pandoc
generateNotes needNote = processWith (mvCiteInNote needNote)
procInlines :: ([Inline] -> [Inline]) -> Block -> Block
procInlines f b
| Plain inls <- b = Plain $ f inls
| Para inls <- b = Para $ f inls
| Header i inls <- b = Header i $ f inls
| otherwise = b
mvCiteInNote :: [Inline] -> Block -> Block
mvCiteInNote is = procInlines mvCite
where
mvCite :: [Inline] -> [Inline]
mvCite inls
| x:i:xs <- inls, startWithPunct xs
, x == Space, i `elem_` is = switch i xs ++ mvCite (tailFirstInlineStr xs)
| x:i:xs <- inls
, x == Space, i `elem_` is = mvInNote i : mvCite xs
| i:xs <- inls, i `elem_` is
, startWithPunct xs = switch i xs ++ mvCite (tailFirstInlineStr xs)
| i:xs <- inls, Note _ <- i = checkNt i : mvCite xs
| i:xs <- inls = i : mvCite xs
| otherwise = []
elem_ x xs = case x of Cite cs _ -> (Cite cs []) `elem` xs; _ -> False
switch i xs = Str (headInline xs) : mvInNote i : []
mvInNote i
| Cite t o <- i = Note [Para [Cite t $ sanitize o]]
| otherwise = Note [Para [i ]]
sanitize i
| endWithPunct i = toCapital i
| otherwise = toCapital (i ++ [Str "."])
checkPt i
| Cite c o : xs <- i
, endWithPunct o, startWithPunct xs
, endWithPunct o = Cite c (initInline o) : checkPt xs
| x:xs <- i = x : checkPt xs
| otherwise = []
checkNt = processWith $ procInlines checkPt
setCiteNoteNum :: [Inline] -> Int -> [Inline]
setCiteNoteNum ((Cite cs o):xs) n = Cite (setCitationNoteNum n cs) o : setCiteNoteNum xs n
setCiteNoteNum _ _ = []
setCitationNoteNum :: Int -> [Citation] -> [Citation]
setCitationNoteNum i = map $ \c -> c { citationNoteNum = i}
toCslCite :: Citation -> CSL.Cite
toCslCite (Citation i p l cm nn h)
= let (la,lo) = parseLocator l
citMode = case cm of
AuthorInText -> (True, False)
SuppressAuthor -> (False,True )
NormalCitation -> (False,False)
in emptyCite { CSL.citeId = i
, CSL.citePrefix = p
, CSL.citeLabel = la
, CSL.citeLocator = lo
, CSL.citeNoteNumber = show nn
, CSL.authorInText = fst citMode
, CSL.suppressAuthor = snd citMode
, CSL.citeHash = h
}
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