Re: [Haskell-cafe] Re: how to use a literal string with bystring useAsCString

9 Feb 2009


      2009/2/9 minh thu :
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2009/2/9 Colin Adams :
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2009/2/9 minh thu :
...
Anyway, I'd like to get my utf-8 string to C but in ascii (or latin1).
How can do this ?
You can't (in general).
If the data just happens to be ascii, then your utf-8 string will BE
ascii (there is no way to tell the difference). If it just happens to
be in the range of latin-1(all codepoints 0-255), then you have to
convert it to latin-1. But otherwise, you are stuck.
That's what I thought, but in the code attached before, the output of
the program is not what is expected, i.e. I have :
0xb7d7e018
0xb7d7e040
Why ?
Thu
Sorry, in both case, it's a mistake on my side.
In particular, in the attached code, I call 'print' instead
of 'c_print'.

Thu