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{-# LANGUAGE NoImplicitPrelude #-}
{- |
Module : Text.Pandoc.Readers.Docx.StyleMaps
Copyright : © 2014-2019 Jesse Rosenthal <jrosenthal@jhu.edu>,
2014-2019 John MacFarlane <jgm@berkeley.edu>,
2015 Nikolay Yakimov <root@livid.pp.ru>
License : GNU GPL, version 2 or above
Maintainer : Jesse Rosenthal <jrosenthal@jhu.edu>
Stability : alpha
Portability : portable
Docx reader utility functions.
-}
module Text.Pandoc.Readers.Docx.Util (
NameSpaces
, elemName
, isElem
, elemToNameSpaces
, findChildByName
, findChildrenByName
, findAttrText
, findAttrByName
, findAttrTextByName
) where
import Prelude
import Data.Maybe (mapMaybe)
import qualified Data.Text as T
import Text.XML.Light
type NameSpaces = [(String, String)]
elemToNameSpaces :: Element -> NameSpaces
elemToNameSpaces = mapMaybe attrToNSPair . elAttribs
attrToNSPair :: Attr -> Maybe (String, String)
attrToNSPair (Attr (QName s _ (Just "xmlns")) val) = Just (s, val)
attrToNSPair _ = Nothing
elemName :: NameSpaces -> String -> String -> QName
elemName ns prefix name =
QName name (lookup prefix ns) (if null prefix then Nothing else Just prefix)
isElem :: NameSpaces -> String -> String -> Element -> Bool
isElem ns prefix name element =
let ns' = ns ++ elemToNameSpaces element
in qName (elName element) == name &&
qURI (elName element) == lookup prefix ns'
findChildByName :: NameSpaces -> String -> String -> Element -> Maybe Element
findChildByName ns pref name el =
let ns' = ns ++ elemToNameSpaces el
in findChild (elemName ns' pref name) el
findChildrenByName :: NameSpaces -> String -> String -> Element -> [Element]
findChildrenByName ns pref name el =
let ns' = ns ++ elemToNameSpaces el
in findChildren (elemName ns' pref name) el
findAttrText :: QName -> Element -> Maybe T.Text
findAttrText x = fmap T.pack . findAttr x
findAttrByName :: NameSpaces -> String -> String -> Element -> Maybe String
findAttrByName ns pref name el =
let ns' = ns ++ elemToNameSpaces el
in findAttr (elemName ns' pref name) el
findAttrTextByName :: NameSpaces -> String -> String -> Element -> Maybe T.Text
findAttrTextByName a b c = fmap T.pack . findAttrByName a b c
|
