module Wiki (
- Backend (getCurrent,getList,get,setCurrent,update)
+ Backend (getCurrent,getList,get,setCurrent,update,listKeys)
,PGB
,createPGB
- ,Markup (Text, Paragraph, Link, Bold, Emph, Heading, Url, Underline, Strike)
+ ,Markup (Text, Paragraph, Link, Bold, Emph, Heading, Url, Underline, Strike, Pre)
,Document
,wikiParser
+ ,htmlOutput
) where
--Keyword -> Full text -> id
update :: a -> String -> String -> String -> String -> IO String
+ --[Keyword]
+ listKeys :: a -> IO [String]
+
data Markup = Text String
| Paragraph
| Link String String
| Url String
| Underline [Markup]
| Strike [Markup]
+ | Pre String
type Document = [Markup]
[] -> return (Link l l)
_ -> return (Link l d)
-pBold = do
- string "**"
- s <- pStringParser "**"
- return (Bold s)
-
-pEmph = do
- string "//"
- s <- pStringParser "//"
- return (Emph s)
-
-pUnderline = do
- string "__"
- s <- pStringParser "__"
- return (Underline s)
+pBold = pS "**" (\s -> Bold s)
+pEmph = pS "//" (\s -> Emph s)
+pUnderline = pS "__" (\s -> Underline s)
+pStrike = pS "--" (\s -> Strike s)
-pStrike = do
- string "--"
- s <- pStringParser "--"
- return (Strike s)
+pS s f = do
+ string s
+ s <- pStopAt s
+ return (f s)
-pStringParser xs = do
+pStopAt xs = do
try (string xs >> return []) <|> (do
s <- pMain
- ss <- pStringParser xs
+ ss <- pStopAt xs
return (s:ss))
pString xs = 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(pUnderline)
[[id]] <- selectReturnTuples db $ "SELECT currval('fulltexts_id_seq')"
setCurrent (PGB db) key id
return id
+
+ listKeys (PGB db) = do
+ list <- selectReturnTuples db $ "SELECT keyword FROM fulltexts ORDER BY lower(keyword)"
+ case list of
+ [[]] -> return []
+ _ -> mapM (\[key] -> return key) list
+
tov :: String -> String
tov s = '\'':escapeQuery s++"'"
-
+toHtml :: [Markup] -> String
+toHtml [] = []
+toHtml ((Paragraph):xs) = "<p>\n"++toHtml xs
+toHtml ((Text s):xs) = s++toHtml xs
+toHtml ((Link l d):xs) = "<link: "++l++" desc: "++d++">"++toHtml xs
+toHtml ((Bold d):xs) = "<b>"++toHtml d++"</b>"++toHtml xs
+toHtml ((Emph d):xs) = "<em>"++toHtml d++"</em>"++toHtml xs
+toHtml ((Underline d):xs) = "<u>"++toHtml d++"</u>"++toHtml xs
+toHtml ((Strike d):xs) = "<strike>"++toHtml d++"</strike>"++toHtml xs
+toHtml ((Heading n d):xs) = "\n<h"++show n++">"++toHtml d++"</h"++show n++">\n"++toHtml xs
+toHtml ((Url l):xs) = "<link: "++l++">"++toHtml xs
+toHtml ((Pre s):xs) = "<pre>"++s++"</pre>"++toHtml xs
+
+
+htmlOutput s = case parse wikiParser "" s of
+ Right n -> do
+ putStr (toHtml n)
+ Left e -> do
+ print e