diff options
Diffstat (limited to 'src/Text/Pandoc/BCP47.hs')
| -rw-r--r-- | src/Text/Pandoc/BCP47.hs | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/src/Text/Pandoc/BCP47.hs b/src/Text/Pandoc/BCP47.hs index ce8aa99ca..f4afec90c 100644 --- a/src/Text/Pandoc/BCP47.hs +++ b/src/Text/Pandoc/BCP47.hs @@ -20,9 +20,7 @@ module Text.Pandoc.BCP47 ( where import Prelude import Control.Monad (guard) -import Data.Char (isAlphaNum, isAscii, isLetter, isLower, isUpper, toLower, - toUpper) -import Data.List (intercalate) +import Data.Char (isAlphaNum, isAscii, isLetter, isLower, isUpper) import Text.Pandoc.Definition import Text.Pandoc.Options import Text.DocTemplates (FromContext(..)) @@ -30,22 +28,22 @@ import qualified Data.Text as T import qualified Text.Parsec as P -- | Represents BCP 47 language/country code. -data Lang = Lang{ langLanguage :: String - , langScript :: String - , langRegion :: String - , langVariants :: [String] } +data Lang = Lang{ langLanguage :: T.Text + , langScript :: T.Text + , langRegion :: T.Text + , langVariants :: [T.Text] } deriving (Eq, Ord, Show) -- | Render a Lang as BCP 47. -renderLang :: Lang -> String -renderLang lang = intercalate "-" (langLanguage lang : filter (not . null) +renderLang :: Lang -> T.Text +renderLang lang = T.intercalate "-" (langLanguage lang : filter (not . T.null) ([langScript lang, langRegion lang] ++ langVariants lang)) -- | Get the contents of the `lang` metadata field or variable. -getLang :: WriterOptions -> Meta -> Maybe String +getLang :: WriterOptions -> Meta -> Maybe T.Text getLang opts meta = case lookupContext "lang" (writerVariables opts) of - Just s -> Just $ T.unpack s + Just s -> Just s _ -> case lookupMeta "lang" meta of Just (MetaInlines [Str s]) -> Just s @@ -55,11 +53,11 @@ getLang opts meta = -- | Parse a BCP 47 string as a Lang. Currently we parse -- extensions and private-use fields as "variants," even -- though officially they aren't. -parseBCP47 :: String -> Either String Lang +parseBCP47 :: T.Text -> Either T.Text Lang parseBCP47 lang = case P.parse bcp47 "lang" lang of Right r -> Right r - Left e -> Left $ show e + Left e -> Left $ T.pack $ show e where bcp47 = do language <- pLanguage script <- P.option "" pScript @@ -75,19 +73,19 @@ parseBCP47 lang = cs <- P.many1 asciiLetter let lcs = length cs guard $ lcs == 2 || lcs == 3 - return $ map toLower cs + return $ T.toLower $ T.pack $ cs pScript = P.try $ do P.char '-' x <- P.satisfy (\c -> isAscii c && isLetter c && isUpper c) xs <- P.count 3 (P.satisfy (\c -> isAscii c && isLetter c && isLower c)) - return $ map toLower (x:xs) + return $ T.toLower $ T.pack (x:xs) pRegion = P.try $ do P.char '-' cs <- P.many1 asciiLetter let lcs = length cs guard $ lcs == 2 || lcs == 3 - return $ map toUpper cs + return $ T.toUpper $ T.pack cs pVariant = P.try $ do P.char '-' ds <- P.option "" (P.count 1 P.digit) @@ -96,12 +94,12 @@ parseBCP47 lang = guard $ if null ds then length var >= 5 && length var <= 8 else length var == 4 - return $ map toLower var + return $ T.toLower $ T.pack var pExtension = P.try $ do P.char '-' cs <- P.many1 $ P.satisfy (\c -> isAscii c && isAlphaNum c) guard $ length cs >= 2 && length cs <= 8 - return $ map toLower cs + return $ T.toLower $ T.pack cs pPrivateUse = P.try $ do P.char '-' P.char 'x' @@ -109,4 +107,4 @@ parseBCP47 lang = cs <- P.many1 $ P.satisfy (\c -> isAscii c && isAlphaNum c) guard $ not (null cs) && length cs <= 8 let var = "x-" ++ cs - return $ map toLower var + return $ T.toLower $ T.pack var |