Initial commit.
Hakyll site, generates bib from bibtex.
This commit is contained in:
Justin Hsu
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{-# OPTIONS_GHC -fno-warn-unused-do-bind #-}
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-----------------------------------------------------------------------------
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-- |
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-- Module : Text.CSL.Input.Bibtex
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-- Copyright : (c) John MacFarlane
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-- License : BSD-style (see LICENSE)
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--
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-- Maintainer : John MacFarlane <fiddlosopher@gmail.com>
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-- Stability : unstable-- Portability : unportable
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--
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-- Modified : JH: Use just the bibtex parser
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-----------------------------------------------------------------------------
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module Text.CSL.Input.Bibtex
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(
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bibEntries
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, resolveCrossRefs
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, Item(..)
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)
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where
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import Text.Parsec hiding (optional, (<|>), many, State)
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import Control.Applicative
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import Text.Pandoc
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import Data.List.Split (splitOn, splitWhen, wordsBy)
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import Data.List (intercalate)
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import Data.Maybe
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import Data.Char (toLower, isUpper, toUpper, isDigit, isAlphaNum)
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import Control.Monad
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import Control.Monad.RWS
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import System.Environment (getEnvironment)
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import Text.CSL.Style (Formatted(..), Locale(..), CslTerm(..), Agent(..))
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import qualified Text.Pandoc.Walk as Walk
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import qualified Text.Pandoc.UTF8 as UTF8
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data Item = Item{ identifier :: String
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, entryType :: String
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, fields :: [(String, String)]
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}
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type BibParser = Parsec [Char] [(String, String)]
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bibEntries :: BibParser [Item]
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bibEntries = many (try (skipMany nonEntry >> bibItem)) <* skipMany nonEntry
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where nonEntry = bibSkip <|> bibComment <|> bibPreamble <|> bibString
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bibSkip :: BibParser ()
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bibSkip = skipMany1 (satisfy (/='@'))
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bibComment :: BibParser ()
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bibComment = try $ do
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char '@'
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cistring "comment"
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skipMany (satisfy (/='\n'))
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bibPreamble :: BibParser ()
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bibPreamble = try $ do
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char '@'
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cistring "preamble"
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spaces
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void inBraces
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return ()
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bibString :: BibParser ()
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bibString = try $ do
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char '@'
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cistring "string"
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spaces
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char '{'
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spaces
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f <- entField
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spaces
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char '}'
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updateState $ (f:)
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return ()
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inBraces :: BibParser String
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inBraces = try $ do
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char '{'
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res <- manyTill
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( many1 (noneOf "{}\\")
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<|> (char '\\' >> ( (char '{' >> return "\\{")
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<|> (char '}' >> return "\\}")
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<|> return "\\"))
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<|> (braced <$> inBraces)
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) (char '}')
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return $ concat res
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braced :: String -> String
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braced s = "{" ++ s ++ "}"
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inQuotes :: BibParser String
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inQuotes = do
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char '"'
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concat <$> manyTill ( many1 (noneOf "\"\\{")
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<|> (char '\\' >> (\c -> ['\\',c]) <$> anyChar)
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<|> braced <$> inBraces
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) (char '"')
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fieldName :: BibParser String
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fieldName = (map toLower) <$> many1 (letter <|> digit <|> oneOf "-_")
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isBibtexKeyChar :: Char -> Bool
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isBibtexKeyChar c = isAlphaNum c || c `elem` ".:;?!`'()/*@_+=-[]*"
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bibItem :: BibParser Item
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bibItem = do
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char '@'
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enttype <- map toLower <$> many1 letter
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spaces
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char '{'
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spaces
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entid <- many (satisfy isBibtexKeyChar)
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spaces
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char ','
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spaces
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entfields <- entField `sepEndBy` (char ',')
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spaces
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char '}'
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return $ Item entid enttype entfields
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entField :: BibParser (String, String)
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entField = try $ do
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spaces
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k <- fieldName
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spaces
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char '='
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spaces
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vs <- (expandString <|> inQuotes <|> inBraces <|> rawWord) `sepBy`
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(try $ spaces >> char '#' >> spaces)
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spaces
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return (k, concat vs)
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rawWord :: BibParser String
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rawWord = many1 alphaNum
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expandString :: BibParser String
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expandString = do
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k <- fieldName
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strs <- getState
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case lookup k strs of
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Just v -> return v
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Nothing -> return k -- return raw key if not found
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cistring :: String -> BibParser String
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cistring [] = return []
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cistring (c:cs) = do
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x <- (char (toLower c) <|> char (toUpper c))
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xs <- cistring cs
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return (x:xs)
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resolveCrossRefs :: Bool -> [Item] -> [Item]
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resolveCrossRefs isBibtex entries =
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map (resolveCrossRef isBibtex entries) entries
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splitKeys :: String -> [String]
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splitKeys = wordsBy (\c -> c == ' ' || c == ',')
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getXrefFields :: Bool -> Item -> [Item] -> String -> [(String, String)]
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getXrefFields isBibtex baseEntry entries keys = do
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let keys' = splitKeys keys
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xrefEntry <- [e | e <- entries, identifier e `elem` keys']
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(k, v) <- fields xrefEntry
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if k == "crossref" || k == "xdata"
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then do
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xs <- mapM (getXrefFields isBibtex baseEntry entries)
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(splitKeys v)
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(x, y) <- xs
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guard $ isNothing $ lookup x $ fields xrefEntry
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return (x, y)
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else do
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k' <- if isBibtex
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then return k
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else transformKey (entryType xrefEntry) (entryType baseEntry) k
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guard $ isNothing $ lookup k' $ fields baseEntry
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return (k',v)
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resolveCrossRef :: Bool -> [Item] -> Item -> Item
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resolveCrossRef isBibtex entries entry = foldl go entry (fields entry)
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where go entry' (key, val) =
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if key == "crossref" || key == "xdata"
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then entry'{ fields = fields entry' ++
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getXrefFields isBibtex entry entries val }
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else entry'
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-- transformKey source target key
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-- derived from Appendix C of bibtex manual
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transformKey :: String -> String -> String -> [String]
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transformKey _ _ "ids" = []
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transformKey _ _ "crossref" = []
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transformKey _ _ "xref" = []
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transformKey _ _ "entryset" = []
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transformKey _ _ "entrysubtype" = []
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transformKey _ _ "execute" = []
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transformKey _ _ "label" = []
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transformKey _ _ "options" = []
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transformKey _ _ "presort" = []
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transformKey _ _ "related" = []
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transformKey _ _ "relatedoptions" = []
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transformKey _ _ "relatedstring" = []
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transformKey _ _ "relatedtype" = []
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transformKey _ _ "shorthand" = []
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transformKey _ _ "shorthandintro" = []
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transformKey _ _ "sortkey" = []
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transformKey x y "author"
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| x `elem` ["mvbook", "book"] &&
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y `elem` ["inbook", "bookinbook", "suppbook"] = ["bookauthor", "author"]
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-- note: this next clause is not in the biblatex manual, but it makes
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-- sense in the context of CSL conversion:
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transformKey x y "author"
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| x == "mvbook" && y == "book" = ["bookauthor", "author"]
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transformKey "mvbook" y z
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| y `elem` ["book", "inbook", "bookinbook", "suppbook"] = standardTrans z
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transformKey x y z
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| x `elem` ["mvcollection", "mvreference"] &&
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y `elem` ["collection", "reference", "incollection", "inreference",
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"suppcollection"] = standardTrans z
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transformKey "mvproceedings" y z
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| y `elem` ["proceedings", "inproceedings"] = standardTrans z
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transformKey "book" y z
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| y `elem` ["inbook", "bookinbook", "suppbook"] = bookTrans z
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transformKey x y z
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| x `elem` ["collection", "reference"] &&
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y `elem` ["incollection", "inreference", "suppcollection"] = bookTrans z
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transformKey "proceedings" "inproceedings" z = bookTrans z
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transformKey "periodical" y z
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| y `elem` ["article", "suppperiodical"] =
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case z of
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"title" -> ["journaltitle"]
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"subtitle" -> ["journalsubtitle"]
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"shorttitle" -> []
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"sorttitle" -> []
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"indextitle" -> []
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"indexsorttitle" -> []
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_ -> [z]
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transformKey _ _ x = [x]
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standardTrans :: String -> [String]
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standardTrans z =
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case z of
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"title" -> ["maintitle"]
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"subtitle" -> ["mainsubtitle"]
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"titleaddon" -> ["maintitleaddon"]
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"shorttitle" -> []
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"sorttitle" -> []
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"indextitle" -> []
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"indexsorttitle" -> []
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_ -> [z]
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bookTrans :: String -> [String]
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bookTrans z =
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case z of
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"title" -> ["booktitle"]
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"subtitle" -> ["booksubtitle"]
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"titleaddon" -> ["booktitleaddon"]
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"shorttitle" -> []
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"sorttitle" -> []
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"indextitle" -> []
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"indexsorttitle" -> []
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_ -> [z]
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data Lang = Lang String String -- e.g. "en" "US"
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langToLocale :: Lang -> String
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langToLocale (Lang x y) = x ++ ('-':y)
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resolveKey :: Lang -> Formatted -> Formatted
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resolveKey lang (Formatted ils) = Formatted (Walk.walk go ils)
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where go (Str s) = Str $ resolveKey' lang s
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go x = x
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resolveKey' :: Lang -> String -> String
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resolveKey' (Lang "en" "US") k =
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case map toLower k of
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"inpreparation" -> "in preparation"
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"submitted" -> "submitted"
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"forthcoming" -> "forthcoming"
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"inpress" -> "in press"
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"prepublished" -> "pre-published"
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"mathesis" -> "Master’s thesis"
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"phdthesis" -> "PhD thesis"
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"candthesis" -> "Candidate thesis"
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"techreport" -> "technical report"
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"resreport" -> "research report"
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"software" -> "computer software"
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"datacd" -> "data CD"
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"audiocd" -> "audio CD"
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"patent" -> "patent"
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"patentde" -> "German patent"
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"patenteu" -> "European patent"
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"patentfr" -> "French patent"
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"patentuk" -> "British patent"
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"patentus" -> "U.S. patent"
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"patreq" -> "patent request"
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"patreqde" -> "German patent request"
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"patreqeu" -> "European patent request"
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"patreqfr" -> "French patent request"
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"patrequk" -> "British patent request"
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"patrequs" -> "U.S. patent request"
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"countryde" -> "Germany"
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"countryeu" -> "European Union"
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"countryep" -> "European Union"
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"countryfr" -> "France"
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"countryuk" -> "United Kingdom"
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"countryus" -> "United States of America"
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"newseries" -> "new series"
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"oldseries" -> "old series"
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_ -> k
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resolveKey' _ k = resolveKey' (Lang "en" "US") k
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parseMonth :: String -> String
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parseMonth "jan" = "1"
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parseMonth "feb" = "2"
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parseMonth "mar" = "3"
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parseMonth "apr" = "4"
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parseMonth "may" = "5"
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parseMonth "jun" = "6"
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parseMonth "jul" = "7"
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parseMonth "aug" = "8"
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parseMonth "sep" = "9"
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parseMonth "oct" = "10"
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parseMonth "nov" = "11"
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parseMonth "dec" = "12"
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parseMonth x = x
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