On Sun, Oct 03, 2004 at 09:41:03AM -0700, J Robinson wrote:
> Suppose I have word in a perl scalar ($w).
> How can I detect if $w contains multibyte or 'wide'
You can test if the UTF flag is set on the scalar by:
utf8::is_utf8( $w );
moseley@bumby:~$ perl -lwe '$x = chr(250); print utf8::is_utf8($x)'
moseley@bumby:~$ perl -lwe '$x = chr(450); print utf8::is_utf8($x)'
But that doesn't really tell you anything about the data in the
scalar. The UTF flag can be set when the scalar only contains ascii
I think you would need to look at the bytes in the string. Assuming
you are asking if the string contains chars other than some charset
like latin-1 then maybe try converting the string to latin-1 and see
if there's any errors.
perldoc perluniintro has a FAQ section that might be helpful.
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Received on Sun Oct 3 12:38:15 2004