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{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-
Copyright (C) 2017 John MacFarlane <jgm@berkeley.edu>
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.Translations
Copyright : Copyright (C) 2017 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
Data types for localization.
Translations are stored in @data/translations/langname.trans@,
where langname can be the full BCP47 language specifier, or
just the language part. File format is:
> # A comment, ignored
> Figure: Figura
> Index: Indeksi
-}
module Text.Pandoc.Translations (
Term(..)
, Translations(..)
, readTranslations
)
where
import qualified Data.Map as M
import GHC.Generics (Generic)
import Text.Pandoc.Shared (trim, safeRead)
data Term =
Preface
| References
| Abstract
| Bibliography
| Chapter
| Appendix
| Contents
| ListOfFigures
| ListOfTables
| Index
| Figure
| Table
| Part
| Page
| Proof
| See
| SeeAlso
| Cc
| To
deriving (Show, Eq, Ord, Generic, Read)
newtype Translations = Translations (M.Map Term String)
deriving (Show, Eq, Ord, Generic, Monoid)
readTranslations :: String -> Either String Translations
readTranslations = foldr parseLine (Right mempty) . lines
parseLine :: String
-> Either String Translations
-> Either String Translations
parseLine _ (Left s) = Left s
parseLine ('#':_) x = x
parseLine [] x = x
parseLine t (Right (Translations tm)) =
if null rest
then Left $ "no colon in " ++ term
else
case safeRead term of
Nothing -> Left $ term ++ " is not a recognized term name"
Just term' -> Right (Translations $ (M.insert term' defn) tm)
where (trm, rest) = break (\c -> c == ':') t
defn = trim $ drop 1 rest
term = trim trm
|
