Backend (getCurrent,getList,get,setCurrent,update)
,PGB
,createPGB
+ ,Markup (Text, Paragraph, Link)
+ ,Document
+ ,wikiParser
) where
import Dbconnect
import Data.Char
+import Text.ParserCombinators.Parsec
class Backend a where
--Keyword -> (Full text,date)
update :: a -> String -> String -> String -> String -> IO String
data Markup = Text String
- | Bold String
- | Paragraph [Markup]
+ | Paragraph
+ | Link String String
type Document = [Markup]
+wikiParser :: GenParser Char st Document
+wikiParser = do
+ s <- (try (pPara)
+ <|> pOneEol
+ <|> try (pLinkLong)
+ <|> pLink
+ <|> pText)
+ ss <- (wikiParser <|> return [])
+ return (s:ss)
+
+pPara = do
+ pEol
+ pEol
+ return (Paragraph)
+
+pOneEol = do
+ pEol
+ return (Text " ")
+
+pEol = char '\n' <|> do
+ char '\r'
+ char '\n'
+
+pLinkLong = do
+ string "[["
+ l <- many1 $ noneOf ['|','[',']']
+ char '|'
+ d <- many1 $ noneOf ['|','[',']']
+ string "]]"
+ return (Link l d)
+pLink = do
+ string "[["
+ l <- many1 $ noneOf ['|','[',']']
+ string "]]"
+ return (Link l l)
+
+pText = do
+ t <- many1 (noneOf ['\n','\r','[',']'])
+ return (Text t)
+
newtype PGB = PGB DBService
createPGB :: String -> String -> String -> String -> IO PGB