Wrote more

[Rakka.git] / Rakka / Wiki / Parser.hs

diff --git a/Rakka/Wiki/Parser.hs b/Rakka/Wiki/Parser.hs
index 0433612ba5746bcd98312f5993b6847831336717..7e0c1a90b8517037a10db00011bf630cb9be5d72 100644 (file)
--- a/Rakka/Wiki/Parser.hs
+++ b/Rakka/Wiki/Parser.hs
@@ -5,6 +5,7 @@ module Rakka.Wiki.Parser
     where
 
 import           Data.Maybe
+import           Network.URI
 import           Rakka.Wiki
 import           Text.ParserCombinators.Parsec
 
@@ -232,7 +233,11 @@ blockCmd cmdTypeOf
                                        , bCmdAttributes = tagAttrs
                                        , bCmdContents   = xs
                                        }
-                  _   -> pzero
+
+                  Just InlineCommandType
+                      -> pzero
+
+                  _   -> return $ undefinedCmdErr tagName
       )
       <|>
       (try $ do (tagName, tagAttrs) <- emptyTag
@@ -243,7 +248,11 @@ blockCmd cmdTypeOf
                                        , bCmdAttributes = tagAttrs
                                        , bCmdContents   = []
                                        }
-                  _   -> pzero
+
+                  Just InlineCommandType
+                      -> pzero
+
+                  _   -> return $ undefinedCmdErr tagName
       )
       <?>
       "block command"
@@ -259,6 +268,14 @@ blockCmd cmdTypeOf
                  <|>
                  return []
 
+      undefinedCmdErr :: String -> BlockElement
+      undefinedCmdErr name
+          = Div [("class", "error")]
+            [ Paragraph [Text ("The command `" ++ name ++ "' is not defined. " ++
+                               "Make sure you haven't mistyped.")
+                        ]
+            ]
+
 
 inlineElement :: CommandTypeOf -> Parser InlineElement
 inlineElement cmdTypeOf
@@ -266,7 +283,9 @@ inlineElement cmdTypeOf
                foldr (<|>) pzero [ cdata
                                  , apostrophes cmdTypeOf
                                  , text
+                                 , objLink
                                  , pageLink
+                                 , extLink
                                  , inlineCmd cmdTypeOf
                                  ]
 
@@ -326,6 +345,17 @@ apostrophes cmdTypeOf = foldr (<|>) pzero (map try [apos1, apos2, apos3, apos4,
       apos n = count n (char '\'') >> notFollowedBy (char '\'')
 
 
+objLink :: Parser InlineElement
+objLink = do try (string "[[[")
+             page <- many1 (noneOf "|]")
+             text <- option Nothing
+                     (char '|' >> many1 (satisfy (/= ']')) >>= return . Just)
+             string "]]]"
+             return $ ObjectLink page text
+          <?>
+          "object link"
+
+
 pageLink :: Parser InlineElement
 pageLink = do try (string "[[")
               page     <- option Nothing 
@@ -345,6 +375,20 @@ pageLink = do try (string "[[")
            "page link"
 
 
+extLink :: Parser InlineElement
+extLink = do char '['
+             uriStr <- many1 (noneOf " \t]")
+             skipMany (oneOf " \t")
+             text <- option Nothing
+                     (many1 (noneOf "]") >>= return . Just)
+             
+             case parseURI uriStr of
+               Just uri -> char ']' >> return (ExternalLink uri text)
+               Nothing  -> pzero <?> "absolute URI"
+          <?>
+          "external link"
+
+
 inlineCmd :: CommandTypeOf -> Parser InlineElement
 inlineCmd cmdTypeOf
     = (try $ do (tagName, tagAttrs) <- openTag