✏ 编辑: encoding.pm

package PerlIO::encoding;

use strict;
our $VERSION = '0.15';
our $DEBUG = 0;
$DEBUG and warn __PACKAGE__, " called by ", join(", ", caller), "\n";

#
# Equivalent of this is done in encoding.xs - do not uncomment.
#
# use Encode ();

require XSLoader;
XSLoader::load();

our $fallback =
    Encode::PERLQQ()|Encode::WARN_ON_ERR()|Encode::STOP_AT_PARTIAL();

1;
__END__

=head1 NAME

PerlIO::encoding - encoding layer

=head1 SYNOPSIS

use PerlIO::encoding;

open($f, "<:encoding(foo)", "infoo");
  open($f, ">:encoding(bar)", "outbar");

use Encode qw(:fallbacks);
  $PerlIO::encoding::fallback = FB_PERLQQ;

=head1 DESCRIPTION

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 C<$PerlIO::encoding::fallback>
is saved and used as the CHECK argument when calling the Encode methods
encode() and decode().

=head1 SEE ALSO

L<open>, L<Encode>, L<perlfunc/binmode>, L<perluniintro>

=cut

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