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?? Escape.pm(6.9 KB)
?? Heuristic.pm(6.37 KB)
?? IRI.pm(820 B)
?? QueryParam.pm(4.77 KB)
?? Split.pm(2.32 KB)
?? URL.pm(5.36 KB)
?? WithBase.pm(3.77 KB)
?? _foreign.pm(133 B)
?? _generic.pm(5.71 KB)
?? _idna.pm(2.06 KB)
?? _ldap.pm(3.2 KB)
?? _login.pm(257 B)
?? _punycode.pm(5.52 KB)
?? _query.pm(2.5 KB)
?? _segment.pm(442 B)
?? _server.pm(3.66 KB)
?? _userpass.pm(1.04 KB)
?? data.pm(3.34 KB)
?? file
?? file.pm(9.53 KB)
?? ftp.pm(1.06 KB)
?? gopher.pm(2.4 KB)
?? http.pm(451 B)
?? https.pm(170 B)
?? ldap.pm(2.88 KB)
?? ldapi.pm(467 B)
?? ldaps.pm(170 B)
?? mailto.pm(1.27 KB)
?? mms.pm(151 B)
?? news.pm(1.45 KB)
?? nntp.pm(153 B)
?? pop.pm(1.2 KB)
?? rlogin.pm(155 B)
?? rsync.pm(233 B)
?? rtsp.pm(151 B)
?? rtspu.pm(152 B)
?? sftp.pm(124 B)
?? sip.pm(1.69 KB)
?? sips.pm(169 B)
?? snews.pm(198 B)
?? ssh.pm(201 B)
?? telnet.pm(154 B)
?? tn3270.pm(154 B)
?? urn
?? urn.pm(2.15 KB)

Editing: _idna.pm

package URI::_idna;

# This module implements the RFCs 3490 (IDNA) and 3491 (Nameprep)
# based on Python-2.6.4/Lib/encodings/idna.py

use strict;
use warnings;

use URI::_punycode qw(encode_punycode decode_punycode);
use Carp qw(croak);

our $VERSION = '1.73';
$VERSION = eval $VERSION;

BEGIN {
  *URI::_idna::_ENV_::JOIN_LEAKS_UTF8_FLAGS = "$]" < 5.008_003
    ? sub () { 1 }
    : sub () { 0 }
  ;
}

my $ASCII = qr/^[\x00-\x7F]*\z/;

sub encode {
    my $idomain = shift;
    my @labels = split(/\./, $idomain, -1);
    my @last_empty;
    push(@last_empty, pop @labels) if @labels > 1 && $labels[-1] eq "";
    for (@labels) {
	$_ = ToASCII($_);
    }

return eval 'join(".", @labels, @last_empty)' if URI::_idna::_ENV_::JOIN_LEAKS_UTF8_FLAGS;
    return join(".", @labels, @last_empty);
}

sub decode {
    my $domain = shift;
    return join(".", map ToUnicode($_), split(/\./, $domain, -1))
}

sub nameprep { # XXX real implementation missing
    my $label = shift;
    $label = lc($label);
    return $label;
}

sub check_size {
    my $label = shift;
    croak "Label empty" if $label eq "";
    croak "Label too long" if length($label) > 63;
    return $label;
}

sub ToASCII {
    my $label = shift;
    return check_size($label) if $label =~ $ASCII;

# Step 2: nameprep
    $label = nameprep($label);
    # Step 3: UseSTD3ASCIIRules is false
    # Step 4: try ASCII again
    return check_size($label) if $label =~ $ASCII;

# Step 5: Check ACE prefix
    if ($label =~ /^xn--/) {
        croak "Label starts with ACE prefix";
    }

# Step 6: Encode with PUNYCODE
    $label = encode_punycode($label);

# Step 7: Prepend ACE prefix
    $label = "xn--$label";

# Step 8: Check size
    return check_size($label);
}

sub ToUnicode {
    my $label = shift;
    $label = nameprep($label) unless $label =~ $ASCII;
    return $label unless $label =~ /^xn--/;
    my $result = decode_punycode(substr($label, 4));
    my $label2 = ToASCII($result);
    if (lc($label) ne $label2) {
	croak "IDNA does not round-trip: '\L$label\E' vs '$label2'";
    }
    return $result;
}

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Editing: _idna.pm

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