deal with http-conduit changing a data type

Pity that the library does not provide a function to extract the status
code from the StatusCodeException, so when they had to add a new field, it
breaks every single place that does it.
This commit is contained in:
Joey Hess 2013-02-27 00:07:28 -04:00
parent 3a210490b7
commit b117efc19b
3 changed files with 20 additions and 5 deletions

View file

@ -5,7 +5,13 @@
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE ScopedTypeVariables, CPP #-}
#if defined VERSION_http_conduit
#if ! MIN_VERSION_http_conduit(1,9,0)
#define WITH_OLD_HTTP_CONDUIT
#endif
#endif
module Remote.WebDAV (remote, davCreds, setCredsEnv) where
@ -228,7 +234,11 @@ davUrlExists :: DavUrl -> DavUser -> DavPass -> IO (Either String Bool)
davUrlExists url user pass = decode <$> catchHttp (getProps url user pass)
where
decode (Right _) = Right True
#ifdef WITH_OLD_HTTP_CONDUIT
decode (Left (Left (StatusCodeException status _)))
#else
decode (Left (Left (StatusCodeException status _ _)))
#endif
| statusCode status == statusCode notFound404 = Right False
decode (Left e) = Left $ showEitherException e
@ -275,7 +285,12 @@ catchHttp a = (Right <$> a) `E.catches`
type EitherException = Either HttpException E.IOException
showEitherException :: EitherException -> String
showEitherException (Left (StatusCodeException status _)) = show $ statusMessage status
#ifdef WITH_OLD_HTTP_CONDUIT
showEitherException (Left (StatusCodeException status _)) =
#else
showEitherException (Left (StatusCodeException status _ _)) =
#endif
show $ statusMessage status
showEitherException (Left httpexception) = show httpexception
showEitherException (Right ioexception) = show ioexception