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/usr/share/perl5/auto/Data/Validate/Email/is_email.al is in libdata-validate-email-perl 0.04-1.

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# NOTE: Derived from blib/lib/Data/Validate/Email.pm.
# Changes made here will be lost when autosplit is run again.
# See AutoSplit.pm.
package Data::Validate::Email;

#line 157 "blib/lib/Data/Validate/Email.pm (autosplit into blib/lib/auto/Data/Validate/Email/is_email.al)"
# -------------------------------------------------------------------------------


sub is_email{
	my $self = shift if ref($_[0]); 
	my $value = shift;
	
	return unless defined($value);
	
	my $opt = (defined $self) ? $self : (shift);
	
	my @parts = split(/\@/, $value);
	return unless scalar(@parts) == 2;
	
	my($user) = is_username($parts[0], $opt);
	return unless defined($user);
	return unless $user eq $parts[0];
	
	my $domain = is_domain($parts[1], $opt);
	return unless defined($domain);
	return unless $domain eq $parts[1];

	return $user . '@' . $domain;
}

# end of Data::Validate::Email::is_email
1;