PerlIO::encoding − encoding layer
use
PerlIO::encoding;
open($f, "<:encoding(foo)", "infoo");
open($f, ">:encoding(bar)",
"outbar");
use Encode qw(:fallbacks);
$PerlIO::encoding::fallback = FB_PERLQQ;
This PerlIO layer opens a filehandle with a transparent encoding filter.
On input, it converts the bytes expected to be in the specified character set and encoding to Perl string data (Unicode and Perl’s internal Unicode encoding, UTF−8). On output, it converts Perl string data into the specified character set and encoding.
When the layer is pushed, the current value of $PerlIO::encoding::fallback is saved and used as the CHECK argument when calling the Encode methods encode() and decode().
open, Encode, "binmode" in perlfunc, perluniintro