+ fixPageName :: PageName -> PageName
+ fixPageName = (\ (x:xs) -> toUpper x : xs) . map (\ c -> if c == ' ' then '_' else c)
+
+
+isSafeChar :: Char -> Bool
+isSafeChar c
+ | c == '/' = True
+ | isReserved c = False
+ | c > ' ' && c <= '~' = True
+ | otherwise = False
+
+
+-- URI unescape して UTF-8 から decode する。
+decodePageName :: FilePath -> PageName
+decodePageName = decode UTF8 . C8.pack . unEscapeString
+
+
+encodeFragment :: String -> String
+encodeFragment = escapeURIString isSafeChar . C8.unpack . encode UTF8
+
+
+pageFileName' :: Page -> String
+pageFileName' page
+ = fromMaybe (defaultFileName (pageType page) (pageName page)) (pageFileName page)
+
+
+defaultFileName :: MIMEType -> PageName -> String
+defaultFileName pType pName
+ = let baseName = takeFileName pName
+ in
+ case pType of
+ MIMEType "text" "x-rakka" _ -> baseName <.> "rakka"
+ MIMEType "text" "css" _ -> baseName <.> "css"
+ _ -> baseName
+
+
+mkPageURI :: URI -> PageName -> URI
+mkPageURI baseURI name
+ = baseURI {
+ uriPath = foldl (</>) "/" [uriPath baseURI, encodePageName name ++ ".html"]
+ }
+
+
+mkPageFragmentURI :: URI -> PageName -> String -> URI
+mkPageFragmentURI baseURI name fragment
+ = baseURI {
+ uriPath = foldl (</>) "/" [uriPath baseURI, encodePageName name ++ ".html"]
+ , uriFragment = ('#' : encodeFragment fragment)
+ }
+
+
+mkFragmentURI :: String -> URI
+mkFragmentURI fragment
+ = nullURI {
+ uriFragment = ('#' : encodeFragment fragment)
+ }
+
+
+mkObjectURI :: URI -> PageName -> URI
+mkObjectURI baseURI name
+ = mkAuxiliaryURI baseURI ["object"] name
+
+
+mkAuxiliaryURI :: URI -> [String] -> PageName -> URI
+mkAuxiliaryURI baseURI basePath name
+ = baseURI {
+ uriPath = foldl (</>) "/" ([uriPath baseURI] ++ basePath ++ [encodePageName name])
+ }
+
+
+mkRakkaURI :: PageName -> URI
+mkRakkaURI name = URI {
+ uriScheme = "rakka:"
+ , uriAuthority = Nothing
+ , uriPath = encodePageName name
+ , uriQuery = ""
+ , uriFragment = ""
+ }