> The code for the perl binding has the following test:
>
> STRLEN len;
> char *ptr = SvPV(value, len);
> qpid::types::Variant v = qpid::types::Variant(std::string(ptr,len));
> if (SvUTF8(value)) {
> v.setEncoding("utf8");
> }
>
> I presume this is supposed to test whether the value passed in is UTF8
> (this is before we have encoded it into the AMQP wire format).
>
> So, my question is whether you are saying that the test above (i.e. the
> if statement) does not in fact work for some reason as a way to
> determine whether to encode as str or bin?
Perl can store a scalar internally as binary or utf8, and SvUTF8 just tells you
which mode is being used. If you give perl a string containing unicode
characters, it'll encode it as utf8 internally so SvUTF8 is true and you know
it's a textual string. However give it any non-unicode stream of bytes (inc. 7
bit ASCII) and it'll just store it as binary, AFAIK there is no way to tell a
textual string from a binary string. I guess you could check all the bytes to
ensure high bit is not set, if so you can safely say its a textual string,
however doesn't seem like an optimum solution to me.
Jimmy
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