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Postings from February 2007
Gerard Goossen skribis 2007-02-05 22:35 (+0100):
> > Why would you care about the representation in memory? Will the string
> > be passed to a C function that expects bytes, and not UTF-8?
> Yes, that is a perfect example.
Don't pass unicode strings to things that aren't your Perl program!
Communicate with the outside world (including i/o and C library calls)
using binary strings.
Option 1: Find out which encoding the receiving end requires, and encode
into that encoding. For example, if the receiver requires UTF-16
encoding, use:
use Encode qw(encode);
foo(encode("UTF-16", $string));
Option 2: Find out which encodings the receiving end allows, and encode
into any of those encodings. Specify the encoding using the designated
header or footer sequences:
use Encode qw(encode);
my $enc = "UTF-8";
print "Content-Type: text/html; charset=$enc\n\n";
print encode($enc, $string);
Of course, if your communication goes via a filehandle, you'd use a
PerlIO layer instead of explicitly encoding every single string:
my $enc = "UTF-8";
print "Content-Type: text/html; charset=$enc\n\n";
binmode STDOUT, ":encoding($enc)";
print $string;
--
korajn salutojn,
juerd waalboer: perl hacker <juerd@juerd.nl> <http://juerd.nl/sig>
convolution: ict solutions and consultancy <sales@convolution.nl>
Ik vertrouw stemcomputers niet.
Zie <http://www.wijvertrouwenstemcomputersniet.nl/>.