Backend (getCurrent,getList,get,setCurrent,update)
,PGB
,createPGB
- ,Markup (Text, Paragraph, Link, Bold, Emph, Heading, Url)
+ ,Markup (Text, Paragraph, Link, Bold, Emph, Heading, Url, Underline, Strike, Pre)
,Document
,wikiParser
| Emph [Markup]
| Heading Int [Markup]
| Url String
+ | Underline [Markup]
+ | Strike [Markup]
+ | Pre String
type Document = [Markup]
char '\r'
char '\n'
-pLinkLong = do
- string "[["
- l <- many1 $ noneOf ['|']
- char '|'
- d <- many1 $ noneOf "]"
- string "]]"
- return (Link l d)
+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 <- many1 $ noneOf "]"
- string "]]"
- return (Link l l)
-
-pBold = do
- string "**"
- s <- pStringParser "**"
- return (Bold s)
-
-pEmph = do
- string "//"
- s <- pStringParser "//"
- return (Emph s)
-
-pStringParser xs = do
+ (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 = do
try (string xs >> return []) <|> (do
s <- pMain
- ss <- pStringParser xs
+ ss <- pStopAt xs
return (s:ss))
+pString xs = do
+ try (string xs >> return []) <|> (do
+ s <- anyChar
+ ss <- pString xs
+ return (s:ss))
+
pHeading = do
many1 pEol
level <- many1 $ char '='
char ' '
- s <- pStringParser (' ':level)
+ s <- pStopAt (' ':level)
return (Heading (length level) s)
pURL = do
string "://"
s <- many1 (alphaNum <|> oneOf "?.:&-/")
return (Url (proto++"://"++s))
+
+pPre = do
+ string "<pre>"
+ s <- pString "</pre>"
+ return (Pre s)
pMain = try (pHeading)
<|> (try (pPara)
<|> pSpace
+ <|> try(pPre)
<|> try(pBold)
<|> try(pEmph)
- <|> try (pLinkLong)
+ <|> try(pUnderline)
+ <|> try(pStrike)
<|> try (pLink)
<|> try (pURL)
<|> pOtherChar
getList (PGB db) key = do
list <- selectReturnTuples db $ "SELECT id, timestamp, author, comment from fulltexts WHERE keyword = "++tov key
- return $ map (\[id,date,author,comment] -> (id,date,author,comment)) list
+ case list of
+ [[]] -> return []
+ _ -> return $ map (\[id,date,author,comment] -> (id,date,author,comment)) list
get (PGB db) key id = do
list <- selectReturnTuples db $ "SELECT fulltext from fulltexts WHERE id = "++tov id