headings, urls and maybe some more

[yawbih.git] / Wiki.hs

diff --git a/Wiki.hs b/Wiki.hs
index 41fa15a8cd5d532b84aa03b79a97fc8fef79c017..59e592938df2e7fbb25634bb30b65dd357f05735 100644 (file)
--- a/Wiki.hs
+++ b/Wiki.hs
@@ -2,7 +2,7 @@ module Wiki (
        Backend (getCurrent,getList,get,setCurrent,update)
        ,PGB
        ,createPGB
-       ,Markup (Text, Paragraph, Link, Bold, Emph)
+       ,Markup (Text, Paragraph, Link, Bold, Emph, Heading, Url)
        ,Document
        ,wikiParser
 
@@ -33,6 +33,8 @@ data Markup = Text String
        | Link String String
        | Bold [Markup]
        | Emph [Markup]
+       | Heading Int [Markup]
+       | Url String
 
 type Document = [Markup]
 
@@ -81,19 +83,34 @@ pEmph = do
        return (Emph s)
 
 pStringParser xs = do 
-       (string xs >> return []) <|> (do
+       try (string xs >> return []) <|> (do
                s <- pMain 
                ss <- pStringParser xs
                return (s:ss))
+
+pHeading = do
+       many1 pEol
+       level <- many1 $ char '='
+       char ' '
+       s <- pStringParser (' ':level)
+       return (Heading (length level) s)
+
+pURL = do
+       proto <- many1 letter
+       string "://"
+       s <- many1 (alphaNum <|> oneOf "?.:&-/")
+       return (Url (proto++"://"++s))
        
-pMain = (try (pPara) 
-               <|> pSpace 
-               <|> try(pBold) 
-               <|> try(pEmph) 
-               <|> try (pLinkLong)
-               <|> try (pLink)
-               <|> pOtherChar
-               <|> pText)      
+pMain = try (pHeading)
+       <|> (try (pPara) 
+       <|> pSpace 
+       <|> try(pBold) 
+       <|> try(pEmph) 
+       <|> try (pLinkLong)
+       <|> try (pLink)
+       <|> try (pURL)
+       <|> pOtherChar
+       <|> pText)      
 
 pOtherChar = do
        c <- oneOf "*,;.:!?[]()'\"=-%$£<>/\\|"