On Sun, Oct 15, 2006 at 01:56:07AM +0900, mukai@jmuk.org wrote:
In GHC 6.6, the source code can include UTF-8 characters and converted them to Unicode chars. However, there are no (easy) way to convert them from/to UTF-8 in standard libraries of GHC.
As others have pointed out, the conversion functions are not GHC-specific: charToUTF8Chars :: Char -> [Word8] toUTF8String :: String -> [Word8] fromUTF8String :: [Word8] -> String The fromUTF side probably also needs a way to report illegal encodings and incomplete encodings. As for I/O part, your implementation assumes that hPutChar writes a byte to a Handle, which is currently the case in GHC, but this is arguably a bug, and it's not the case in Hugs and Jhc. I think we need to work out a plan for Unicode I/O in Haskell, and then work towards that. For the current state, see http://haskell.galois.com/cgi-bin/haskell-prime/trac.cgi/wiki/CharAsUnicode