[Haskell-cafe] how to inject another source into conduit

11 Nov 2012

      Hello.

I have problems with writing next code (using network-conduit)

slightly simplified version:
...
app ad = appSource ad $$ sink
  where 
    cMap = M.fromList [ ("upload", cmdUpload), ("download", cmdDownload) ]
    sink = takeLine >>= \c -> case c of Just run -> run ; Nothing -> return ()
    cmdUpload = {- ... -} CB.sinkFile path
    cmdDownload = do
        {- code here -}
        CB.sourceFile path $$ appSink ad  -- this will not work because of 
                                          -- type error
And I'm catching "cannot construct the infinite type".

I've found an example in [1], but it's not exactly solves my problem, as all
the logic is inside conduit, and it will break upload function.

[1] http://www.yesodweb.com/blog/2012/06/conduit-0-5

--
Alexander Vershilov

[Haskell-cafe] how to inject another source into conduit

Alexander V Vershilov