Thanks Yves for the reply. The link provided by you is very helpful. Thank you very much.
Regards, Rajendra On Thu, Mar 22, 2012 at 7:53 PM, Yves Parès <yves.pa...@gmail.com> wrote: > (Sorry for the double post) > > Forget about ByteString.Char8: it doesn't handle unicode as it truncates > characters. > > Going from String to bytestring is easy thanks to the utf8-string ( > http://hackage.haskell.org/packages/archive/utf8-string/0.3.7/doc/html/Codec-Binary-UTF8-String.html) > package and pack function from Data.ByteString(.Lazy). > > And if you want to convert your String directly to a CString (a Ptr CChar) > you better use Foreign.C.String.withCString. > > Le 22 mars 2012 15:17, Yves Parès <yves.pa...@gmail.com> a écrit : > > This joins the question I asked two days ago here. (See >> http://haskell.1045720.n5.nabble.com/Quickest-way-to-pass-Text-to-C-code-td5582223.html >> ) >> Hope that helps. >> >> Le 22 mars 2012 15:10, rajendra prasad <rajendradpra...@gmail.com> a >> écrit : >> >>> Hi, >>> >>> I have just started learning Haskell FFI. I am trying to send a string >>> from hastell to a C function. For this, I am required to convert the >>> haskell string to byte string. I have two methods to achieve this task. >>> Both are listed below: >>> >>> 1) import Foreign.C.String >>> let arg1 = map castCharToCChar "Hello" :: [CChar] >>> >>> 2) import qualified Data.ByteString.Char8 as B >>> f = B.pack "Hello" >>> >>> I just wanted to know the optimal way to achieve this task. Please >>> suggest the optimal way of doing this. If there is any other way, please >>> share it. >>> >>> Also, please suggest me any good tutorial to start with Haskell FFI for >>> C/C++. >>> >>> Thank you very much. >>> >>> >>> Regards, >>> Rajendra >>> >>> _______________________________________________ >>> Haskell-Cafe mailing list >>> Haskell-Cafe@haskell.org >>> http://www.haskell.org/mailman/listinfo/haskell-cafe >>> >>> >> >
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