1 module Rakka.Wiki.Formatter
7 import Control.Arrow.ArrowList
14 import Text.XML.HXT.Arrow.XmlArrow
15 import Text.XML.HXT.DOM.TypeDefs
18 formatWikiBlocks :: (ArrowXml a, ArrowChoice a) => a (URI, [BlockElement]) XmlTree
20 = proc (baseURI, blocks)
21 -> do block <- arrL id -< blocks
22 formatBlock -< (baseURI, block)
25 formatBlock :: (ArrowXml a, ArrowChoice a) => a (URI, BlockElement) XmlTree
27 = proc (baseURI, block)
30 -> formatHeading -< (level, text)
33 -> formatParagraph -< (baseURI, inlines)
36 formatHeading :: ArrowXml a => a (Int, String) XmlTree
39 -> selem ("h" ++ show level) [txt text] -<< ()
42 formatParagraph :: (ArrowXml a, ArrowChoice a) => a (URI, [InlineElement]) XmlTree
45 += ( (arr fst &&& arrL snd)
51 formatInline :: (ArrowXml a, ArrowChoice a) => a (URI, InlineElement) XmlTree
59 -> formatPageLink -< (baseURI, link)
62 formatPageLink :: (ArrowXml a) => a (URI, InlineElement) XmlTree
64 = proc (baseURI, PageLink page fragment text)
65 -> let uri = case (page, fragment) of
66 (Just x, Just y) -> mkPageFragmentURI baseURI (fix x) y
67 (Just x, Nothing) -> mkPageURI baseURI (fix x)
68 (Nothing, Just y) -> nullURI { uriFragment = ('#':y) }
69 fix = (\ (x:xs) -> toUpper x : xs) . map (\ c -> if c == ' ' then '_' else c)
70 href = uriToString id uri ""
71 dLabel = fromMaybe "" page ++ fromMaybe "" (fmap ('#':) fragment)
72 label = fromMaybe dLabel text
75 += attr "href" (arr fst >>> mkText)
76 += (arr snd >>> mkText)