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module Text.Pandoc.Readers.Docx.StyleMap ( StyleMaps(..)
, alterMap
, getMap
, defaultStyleMaps
, getStyleMaps
, getStyleId
, hasStyleName
) where
import Control.Monad.State
import Data.Char (toLower)
import qualified Data.Map as M
import Text.Pandoc.Readers.Docx.Util
import Text.XML.Light
newtype ParaStyleMap = ParaStyleMap ( M.Map String String )
newtype CharStyleMap = CharStyleMap ( M.Map String String )
class StyleMap a where
alterMap :: (M.Map String String -> M.Map String String) -> a -> a
getMap :: a -> M.Map String String
instance StyleMap ParaStyleMap where
alterMap f (ParaStyleMap m) = ParaStyleMap $ f m
getMap (ParaStyleMap m) = m
instance StyleMap CharStyleMap where
alterMap f (CharStyleMap m) = CharStyleMap $ f m
getMap (CharStyleMap m) = m
insert :: (StyleMap a) => Maybe String -> Maybe String -> a -> a
insert (Just k) (Just v) m = alterMap (M.insert k v) m
insert _ _ m = m
getStyleId :: (StyleMap a) => String -> a -> String
getStyleId s = M.findWithDefault (filter (/=' ') s) (map toLower s) . getMap
hasStyleName :: (StyleMap a) => String -> a -> Bool
hasStyleName styleName = M.member (map toLower styleName) . getMap
data StyleMaps = StyleMaps { sNameSpaces :: NameSpaces
, sParaStyleMap :: ParaStyleMap
, sCharStyleMap :: CharStyleMap
}
data StyleType = ParaStyle | CharStyle
defaultStyleMaps :: StyleMaps
defaultStyleMaps = StyleMaps { sNameSpaces = []
, sParaStyleMap = ParaStyleMap M.empty
, sCharStyleMap = CharStyleMap M.empty
}
type StateM a = State StyleMaps a
getStyleMaps :: Element -> StyleMaps
getStyleMaps docElem = execState genStyleMap state'
where
state' = defaultStyleMaps {sNameSpaces = elemToNameSpaces docElem}
genStyleItem e = do
styleType <- getStyleType e
styleId <- getAttrStyleId e
nameValLowercase <- fmap (map toLower) `fmap` getNameVal e
case styleType of
Just ParaStyle -> modParaStyleMap $ insert nameValLowercase styleId
Just CharStyle -> modCharStyleMap $ insert nameValLowercase styleId
_ -> return ()
genStyleMap = do
style <- elemName' "style"
let styles = findChildren style docElem
forM_ styles genStyleItem
modParaStyleMap :: (ParaStyleMap -> ParaStyleMap) -> StateM ()
modParaStyleMap f = modify $ \s ->
s {sParaStyleMap = f $ sParaStyleMap s}
modCharStyleMap :: (CharStyleMap -> CharStyleMap) -> StateM ()
modCharStyleMap f = modify $ \s ->
s {sCharStyleMap = f $ sCharStyleMap s}
getStyleType :: Element -> StateM (Maybe StyleType)
getStyleType e = do
styleTypeStr <- getAttrType e
case styleTypeStr of
Just "paragraph" -> return $ Just ParaStyle
Just "character" -> return $ Just CharStyle
_ -> return Nothing
getAttrType :: Element -> StateM (Maybe String)
getAttrType el = do
name <- elemName' "type"
return $ findAttr name el
getAttrStyleId :: Element -> StateM (Maybe String)
getAttrStyleId el = do
name <- elemName' "styleId"
return $ findAttr name el
getNameVal :: Element -> StateM (Maybe String)
getNameVal el = do
name <- elemName' "name"
val <- elemName' "val"
return $ findChild name el >>= findAttr val
elemName' :: String -> StateM QName
elemName' name = do
namespaces <- gets sNameSpaces
return $ elemName namespaces "w" name
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