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, Font, Link, Heading, Url, Pre,List)
+ ,FontOp (Bold, Emph, Mono, Underline, Strike)
,Document
,wikiParser
+ ,toHtml
+ ,toLatex
) 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
- | Bold [Markup]
- | Emph [Markup]
+ | Font FontOp [Markup]
| Heading Int [Markup]
| Url String
- | Underline [Markup]
- | Strike [Markup]
-
-type Document = [Markup]
+ | Pre [Markup]
+ | List Bool [[Markup]]
-wikiParser :: GenParser Char st Document
-wikiParser = do
- s <- pMain
- ss <- (wikiParser <|> return [])
- return (s:ss)
-
-pPara = do
- pEol
- pEol
- return (Paragraph)
+data FontOp = Bold | Emph | Mono | Underline | Strike
+type Document = [Markup]
-pSpace = do
- space
- return (Text " ")
+wikiParser :: Parser Document
+wikiParser = many1 pMain
-pEol = char '\n' <|> do
- char '\r'
- char '\n'
+firstInLineChars = "#*="
-pLinkParser = do try (string "]]" >> return ([],[]))
- <|> try (do
- string " | "
- d <- pString "]]"
- return ([],d))
- <|> (do
- c <- anyChar
- (l,d) <- pLinkParser
- return (c:l,d))
+pPara :: Parser Markup
+pPara = do
+ count 2 pEol
+ notFollowedBy $ oneOf firstInLineChars
+ return (Paragraph)
+pLink :: Parser Markup
pLink = do
string "[["
- (l,d) <- pLinkParser
+ (l,d) <- pLinkContent
case d of
[] -> 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)
-
-pStrike = do
- string "--"
- s <- pStringParser "--"
- return (Strike s)
-
-pStringParser xs = do
- try (string xs >> return []) <|> (do
- s <- pMain
- ss <- pStringParser xs
- return (s:ss))
-
-pString xs = do
- try (string xs >> return []) <|> (do
- s <- anyChar
- ss <- pString xs
- return (s:ss))
+pList :: Bool -> Parser Markup
+pList enum = do
+ list <- many1 $ try $ pListItem enum
+ return (List enum list)
+
+pListItem :: Bool -> Parser [Markup]
+pListItem enum = do
+ pEol
+ char $ listToken enum
+ many (pOneLine <|> try (pOneEol))
+
+pOneEol = do
+ c <- pEol
+ notFollowedBy (oneOf $ firstInLineChars++"\r\n")
+ return c
+
+listToken True = '#'
+listToken False = '*'
+pHeading :: Parser Markup
pHeading = do
- many1 pEol
+ pEol
level <- many1 $ char '='
- char ' '
- s <- pStringParser (' ':level)
+ s <- pStopAt level
return (Heading (length level) s)
+pURL :: Parser Markup
pURL = do
proto <- many1 letter
string "://"
- s <- many1 (alphaNum <|> oneOf "?.:&-/")
+ s <- many1 (alphaNum <|> oneOf "?.:&-/~%=\\_")
return (Url (proto++"://"++s))
+
+pMail :: Parser Markup
+pMail = do
+ user <- many1 (alphaNum <|> oneOf ".-_")
+ char '@'
+ server <- many1 (alphaNum <|> oneOf ".-_")
+ return (Url ("mailto:"++user++"@"++server))
-pMain = try (pHeading)
- <|> (try (pPara)
- <|> pSpace
- <|> try(pBold)
- <|> try(pEmph)
- <|> try(pUnderline)
- <|> try(pStrike)
- <|> try (pLink)
- <|> try (pURL)
- <|> pOtherChar
- <|> pText)
+pPre :: Parser Markup
+pPre = string "<pre>" >> do
+ s <- pUntil (pOneLine <|> pEol) "</pre>"
+ return (Pre s)
+
+pBold,pEmph,pUnderline,pStrike :: Parser Markup
+pBold = pFont "**" Bold
+pEmph = pFont "//" Emph
+pUnderline = pFont "__" Underline
+pStrike = pFont "--" Strike
+pMono = pFont "||" Mono
+
+pFont s o = string s >> do
+ s <- pStopAt s
+ return (Font o s)
+
+pOtherChar :: Parser Markup
pOtherChar = do
- c <- oneOf "*,;.:!?[]()'\"=-%$£<>/\\|"
+ c <- noneOf "\n\r"
return (Text (c:[]))
+pText :: Parser Markup
pText = do
- t <- many1 alphaNum--(noneOf ['\n','\r','[',']'])
+ t <- many1 alphaNum
return (Text t)
+pLinkContent :: Parser (String, String)
+pLinkContent = do try (string "]]" >> return ([],[]))
+ <|> try (do
+ string " | "
+ d <- pString "]]"
+ return ([],d))
+ <|> (do
+ c <- anyChar
+ (l,d) <- pLinkContent
+ return (c:l,d))
+
+pStopAt :: String -> Parser Document
+pStopAt xs = pUntil pOneLine xs
+
+pString :: String -> Parser String
+pString xs = pUntil anyChar xs
+
+pEol :: Parser Markup
+pEol = do
+ (string "\n" <|> string "\r\n")
+ return (Text "\r\n")
+
+pUntil :: Parser a -> String -> Parser [a]
+pUntil p xs = manyTill p (try $ string xs)
+
+pMain :: Parser Markup
+pMain = choice [
+ try (pHeading)
+ ,try $ pList True
+ ,try $ pList False
+ ,try (pPara)
+ ,try(pPre)
+ ,try(pBold)
+ ,try(pEmph)
+ ,try(pUnderline)
+ ,try(pStrike)
+ ,try(pMono)
+ ,try (pLink)
+ ,try (pURL)
+ ,try (pMail)
+ ,pText
+ ,pOtherChar
+ ,pEol
+ ]
+
+pOneLine = choice [
+ try pBold
+ ,try pEmph
+ ,try pUnderline
+ ,try pStrike
+ ,try pMono
+ ,try pLink
+ ,try pURL
+ ,try pMail
+ ,pText
+ ,pOtherChar
+ ]
newtype PGB = PGB DBService
createPGB :: String -> String -> String -> String -> IO PGB
createPGB host database user password = let db = createDBService host database "" user password Nothing in return (PGB db)
-
-testDB = createPGB "wave" "wiki" "wiki" "12wiki34db"
-
instance Backend PGB where
getCurrent (PGB db) key = do
[[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 current keyword 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 ((Font o d):xs) = "<"++htmlFontOp o++">"++toHtml d++"</"++htmlFontOp o++">"++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>"++toHtml s++"</pre>"++toHtml xs
+toHtml ((List o l):xs) = "<"++htmlListType o++">\n"++(unlines $ map (\s -> "<li>"++toHtml s++"</li>\n") l) ++ "</"++htmlListType o++">"++toHtml xs
+
+htmlFontOp Bold = "b"
+htmlFontOp Emph = "em"
+htmlFontOp Mono = "tt"
+htmlFontOp Underline = "u"
+htmlFontOp Strike = "strike"
+
+htmlListType True = "ol"
+htmlListType False = "ul"
+
+toLatex :: [Markup] -> String
+toLatex [] = []
+toLatex ((Paragraph):xs) = "\n\n"++toLatex xs
+toLatex ((Text s):xs) = s++toLatex xs
+toLatex ((Link l d):xs) = "{\\em "++d++"}"++toLatex xs
+toLatex ((Font o d):xs) = "{\\"++latexFontOp o++" "++toLatex d++"}"++toHtml xs
+toLatex ((Heading n d):xs) = "\n\\"++(unwords $ take (n-1) $ repeat "sub")++"section{"++toLatex d++"}"++"\n\n"++toLatex xs
+toLatex ((Url l):xs) = "{\\bf "++l++"}"++toLatex xs
+toLatex ((Pre s):xs) = "<pre>"++toLatex s++"</pre>"++toLatex xs
+toLatex ((List o l):xs) = "\n\\begin{"++latexListType o++"}\n"++(unlines $ map (\s -> "\\item "++toLatex s++"\n") l) ++ "\\end{"++latexListType o++"}"++toLatex xs
+
+latexFontOp Bold = "bf"
+latexFontOp Emph = "em"
+latexFontOp Mono = "tt"
+latexFontOp Underline = "u"
+latexFontOp Strike = "strike"
+
+latexListType True = "enumeration"
+latexListType False = "itemize"
+
+output s f = case parse wikiParser "" s of
+ Right n -> putStr (f n)
+ Left e -> print e
+
+htmlOutput s = output s toHtml
+latexOutput s = output s toLatex
projects / yawbih.git / blobdiff