X-Git-Url: https://ruin.nu/git/?p=yawbih.git;a=blobdiff_plain;f=Wiki.hs;h=a2b6548509f8282f73af4d2059216c4b91c23673;hp=83827cc1a6e6fbb9e04059f91350b99a0ae824cd;hb=64b58e5b75b4c8e95574fa9080166f5cf1079005;hpb=098456b001387b7133e3d7a8bb06afaf54b434a5

diff --git a/Wiki.hs b/Wiki.hs
index 83827cc..a2b6548 100644
--- a/Wiki.hs
+++ b/Wiki.hs
@@ -1,10 +1,11 @@
 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
 
@@ -28,6 +29,9 @@ class Backend a 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
@@ -37,6 +41,7 @@ data Markup = Text String
 	| Url String
 	| Underline [Markup]
 	| Strike [Markup]
+	| Pre String
 
 type Document = [Markup]
 
@@ -77,30 +82,20 @@ pLink = do
 		[] -> 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
@@ -113,7 +108,7 @@ pHeading = do
 	many1 pEol
 	level <- many1 $ char '='
 	char ' '
-	s <- pStringParser (' ':level)
+	s <- pStopAt (' ':level)
 	return (Heading (length level) s)
 
 pURL = do
@@ -121,10 +116,16 @@ 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) 
@@ -193,9 +194,34 @@ instance Backend PGB where
 				[[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 GROUP BY 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 ((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