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{-# LANGUAGE OverloadedStrings #-}
{- |
Module : Text.Pandoc.Readers.CslJson
Copyright : Copyright (C) 2020 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
Parses CSL JSON bibliographies into a Pandoc document
with empty body and `references` and `nocite` fields
in the metadata. A wildcard `nocite` is used so that
if the document is rendered in another format, the
entire bibliography will be printed.
<https://citeproc-js.readthedocs.io/en/latest/csl-json/markup.html>.
-}
module Text.Pandoc.Readers.CslJson
( readCslJson )
where
import Text.Pandoc.Options
import Text.Pandoc.Definition
import Text.Pandoc.Builder (setMeta, cite, str)
import qualified Text.Pandoc.UTF8 as UTF8
import Data.Text (Text)
import qualified Data.Text as T
import Text.Pandoc.Error (PandocError(..))
import Text.Pandoc.Class (PandocMonad)
import Text.Pandoc.Citeproc.CslJson (cslJsonToReferences)
import Text.Pandoc.Citeproc.MetaValue (referenceToMetaValue)
import Control.Monad.Except (throwError)
-- | Read CSL JSON from an input string and return a Pandoc document.
-- The document will have only metadata, with an empty body.
-- The metadata will contain a `references` field with the
-- bibliography entries, and a `nocite` field with the wildcard `[@*]`.
readCslJson :: PandocMonad m => ReaderOptions -> Text -> m Pandoc
readCslJson _opts t =
case cslJsonToReferences (UTF8.fromText t) of
Left e -> throwError $ PandocParseError $ T.pack e
Right refs -> return $ setMeta "references"
(map referenceToMetaValue refs)
. setMeta "nocite"
(cite [Citation {citationId = "*"
, citationPrefix = []
, citationSuffix = []
, citationMode = NormalCitation
, citationNoteNum = 0
, citationHash = 0}]
(str "[@*]"))
$ Pandoc nullMeta []
|
