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|
{-# LANGUAGE OverloadedStrings #-}
{- |
Module : Text.Pandoc.Writers.LaTeX.Citation
Copyright : Copyright (C) 2006-2021 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
-}
module Text.Pandoc.Writers.LaTeX.Citation
( citationsToNatbib,
citationsToBiblatex
) where
import Data.Text (Text)
import Data.Char (isPunctuation)
import qualified Data.Text as T
import Text.Pandoc.Class.PandocMonad (PandocMonad)
import Text.Pandoc.Definition
import Data.List (foldl')
import Text.DocLayout (Doc, brackets, empty, (<+>), text, isEmpty, literal,
braces)
import Text.Pandoc.Walk
import Text.Pandoc.Writers.LaTeX.Types ( LW )
citationsToNatbib :: PandocMonad m
=> ([Inline] -> LW m (Doc Text))
-> [Citation]
-> LW m (Doc Text)
citationsToNatbib inlineListToLaTeX [one]
= citeCommand inlineListToLaTeX c p s k
where
Citation { citationId = k
, citationPrefix = p
, citationSuffix = s
, citationMode = m
}
= one
c = case m of
AuthorInText -> "citet"
SuppressAuthor -> "citeyearpar"
NormalCitation -> "citep"
citationsToNatbib inlineListToLaTeX cits
| noPrefix (tail cits) && noSuffix (init cits) && ismode NormalCitation cits
= citeCommand inlineListToLaTeX "citep" p s ks
where
noPrefix = all (null . citationPrefix)
noSuffix = all (null . citationSuffix)
ismode m = all ((==) m . citationMode)
p = citationPrefix $
head cits
s = citationSuffix $
last cits
ks = T.intercalate ", " $ map citationId cits
citationsToNatbib inlineListToLaTeX (c:cs)
| citationMode c == AuthorInText = do
author <- citeCommand inlineListToLaTeX "citeauthor" [] [] (citationId c)
cits <- citationsToNatbib inlineListToLaTeX
(c { citationMode = SuppressAuthor } : cs)
return $ author <+> cits
citationsToNatbib inlineListToLaTeX cits = do
cits' <- mapM convertOne cits
return $ text "\\citetext{" <> foldl' combineTwo empty cits' <> text "}"
where
citeCommand' = citeCommand inlineListToLaTeX
combineTwo a b | isEmpty a = b
| otherwise = a <> text "; " <> b
convertOne Citation { citationId = k
, citationPrefix = p
, citationSuffix = s
, citationMode = m
}
= case m of
AuthorInText -> citeCommand' "citealt" p s k
SuppressAuthor -> citeCommand' "citeyear" p s k
NormalCitation -> citeCommand' "citealp" p s k
citeCommand :: PandocMonad m
=> ([Inline] -> LW m (Doc Text))
-> Text
-> [Inline]
-> [Inline]
-> Text
-> LW m (Doc Text)
citeCommand inlineListToLaTeX c p s k = do
args <- citeArguments inlineListToLaTeX p s k
return $ literal ("\\" <> c) <> args
type Prefix = [Inline]
type Suffix = [Inline]
type CiteId = Text
data CiteGroup = CiteGroup Prefix Suffix [CiteId]
citeArgumentsList :: PandocMonad m
=> ([Inline] -> LW m (Doc Text))
-> CiteGroup
-> LW m (Doc Text)
citeArgumentsList _inlineListToLaTeX (CiteGroup _ _ []) = return empty
citeArgumentsList inlineListToLaTeX (CiteGroup pfxs sfxs ids) = do
pdoc <- inlineListToLaTeX pfxs
sdoc <- inlineListToLaTeX sfxs'
return $ optargs pdoc sdoc <>
braces (literal (T.intercalate "," (reverse ids)))
where sfxs' = stripLocatorBraces $ case sfxs of
(Str t : r) -> case T.uncons t of
Just (x, xs)
| T.null xs
, isPunctuation x -> dropWhile (== Space) r
| isPunctuation x -> Str xs : r
_ -> sfxs
_ -> sfxs
optargs pdoc sdoc = case (isEmpty pdoc, isEmpty sdoc) of
(True, True ) -> empty
(True, False) -> brackets sdoc
(_ , _ ) -> brackets pdoc <> brackets sdoc
citeArguments :: PandocMonad m
=> ([Inline] -> LW m (Doc Text))
-> [Inline]
-> [Inline]
-> Text
-> LW m (Doc Text)
citeArguments inlineListToLaTeX p s k =
citeArgumentsList inlineListToLaTeX (CiteGroup p s [k])
-- strip off {} used to define locator in pandoc-citeproc; see #5722
stripLocatorBraces :: [Inline] -> [Inline]
stripLocatorBraces = walk go
where go (Str xs) = Str $ T.filter (\c -> c /= '{' && c /= '}') xs
go x = x
citationsToBiblatex :: PandocMonad m
=> ([Inline] -> LW m (Doc Text))
-> [Citation] -> LW m (Doc Text)
citationsToBiblatex inlineListToLaTeX [one]
= citeCommand inlineListToLaTeX cmd p s k
where
Citation { citationId = k
, citationPrefix = p
, citationSuffix = s
, citationMode = m
} = one
cmd = case m of
SuppressAuthor -> "autocite*"
AuthorInText -> "textcite"
NormalCitation -> "autocite"
citationsToBiblatex inlineListToLaTeX (c:cs)
| all (\cit -> null (citationPrefix cit) && null (citationSuffix cit)) (c:cs)
= do
let cmd = case citationMode c of
SuppressAuthor -> "\\autocite*"
AuthorInText -> "\\textcite"
NormalCitation -> "\\autocite"
return $ text cmd <>
braces (literal (T.intercalate "," (map citationId (c:cs))))
| otherwise
= do
let cmd = case citationMode c of
SuppressAuthor -> "\\autocites*"
AuthorInText -> "\\textcites"
NormalCitation -> "\\autocites"
groups <- mapM (citeArgumentsList inlineListToLaTeX)
(reverse (foldl' grouper [] (c:cs)))
return $ text cmd <> mconcat groups
where grouper prev cit = case prev of
((CiteGroup oPfx oSfx ids):rest)
| null oSfx && null pfx -> CiteGroup oPfx sfx (cid:ids) : rest
_ -> CiteGroup pfx sfx [cid] : prev
where pfx = citationPrefix cit
sfx = citationSuffix cit
cid = citationId cit
citationsToBiblatex _ _ = return empty
|
