+wikiParser :: GenParser Char st Document
+wikiParser = many1 pMain
+
+pPara = do
+ pEol
+ pEol
+ return (Paragraph)
+
+pSpace = do
+ c <- space
+ return (Text (c:[]))
+
+pEol = char '\n' <|> do
+ char '\r'
+ char '\n'
+
+pLinkParser = do try (string "]]" >> return ([],[]))
+ <|> try (do
+ string " | "
+ d <- pString "]]"
+ return ([],d))
+ <|> (do
+ c <- anyChar
+ (l,d) <- pLinkParser
+ return (c:l,d))
+
+pLink = do
+ string "[["
+ (l,d) <- pLinkParser
+ case d of
+ [] -> return (Link l l)
+ _ -> return (Link l d)
+
+pBold = pS "**" (\s -> Bold s)
+pEmph = pS "//" (\s -> Emph s)
+pUnderline = pS "__" (\s -> Underline s)
+pStrike = pS "--" (\s -> Strike s)
+
+pS s f = do
+ string s
+ s <- pStopAt s
+ return (f s)
+
+pStopAt xs = pUntil pMain xs
+pString xs = pUntil anyChar xs
+pUntil p xs = manyTill p (try $ string xs)
+
+pHeading = do
+ many1 pEol
+ level <- many1 $ char '='
+ char ' '
+ s <- pStopAt (' ':level)
+ return (Heading (length level) s)
+
+pURL = do
+ proto <- many1 letter
+ string "://"
+ s <- many1 (alphaNum <|> oneOf "?.:&-/")
+ return (Url (proto++"://"++s))
+
+pPre = do
+ string "<pre>"
+ s <- pString "</pre>"
+ return (Pre s)
+
+pMain = choice [
+ try (pHeading)
+ ,try (pPara)
+ ,pSpace
+ ,try(pPre)
+ ,try(pBold)
+ ,try(pEmph)
+ ,try(pUnderline)
+ ,try(pStrike)
+ ,try (pLink)
+ ,try (pURL)
+ ,pOtherChar
+ ,pText
+ ]
+
+pOtherChar = do
+ c <- oneOf "*,;.:!?[]()'\"=-%$£<>/\\|"
+ return (Text (c:[]))
+
+pText = do
+ t <- many1 alphaNum
+ return (Text t)
+