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# This code is part of Perl distribution Mail-Message version 4.01.
# The POD got stripped from this file by OODoc version 3.05.
# For contributors see file ChangeLog.
# This software is copyright (c) 2001-2025 by Mark Overmeer.
# This is free software; you can redistribute it and/or modify it under
# the same terms as the Perl 5 programming language system itself.
# SPDX-License-Identifier: Artistic-1.0-Perl OR GPL-1.0-or-later
package Mail::Message::Body::Nested;{
our $VERSION = '4.01';
}
use parent 'Mail::Message::Body';
use strict;
use warnings;
use Log::Report 'mail-message', import => [ qw/__x error/ ];
use Mail::Message::Body::Lines ();
use Mail::Message::Part ();
#--------------------
sub init($)
{ my ($self, $args) = @_;
$args->{mime_type} ||= 'message/rfc822';
$self->SUPER::init($args);
my $nested;
if(my $raw = $args->{nested})
{ $nested = Mail::Message::Part->coerce($raw, $self)
or error __x"data not convertible to a message (type is {class})", class => ref $raw;
}
$self->{MMBN_nested} = $nested;
$self;
}
sub clone()
{ my $self = shift;
(ref $self)->new(based_on => $self, nested => $self->nested->clone);
}
sub isNested() { 1 }
sub isBinary() { $_[0]->nested->body->isBinary }
sub nrLines() { $_[0]->nested->nrLines }
sub size() { $_[0]->nested->size }
sub string() { my $nested = $_[0]->nested; defined $nested ? $nested->string : '' }
sub lines() { my $nested = $_[0]->nested; defined $nested ? $nested->lines : () }
sub file() { my $nested = $_[0]->nested; defined $nested ? $nested->file : undef }
sub print(;$) { my $self = shift; $self->nested->print(shift || select) }
sub endsOnNewline() { $_[0]->nested->body->endsOnNewline }
sub partNumberOf($)
{ my ($self, $part) = @_;
$self->message->partNumber || '1';
}
sub foreachLine($)
{ my ($self, $code) = @_;
error __x"you cannot use foreachLine on a nested.";
}
sub check() { $_[0]->forNested( sub { $_[1]->check } ) }
sub encode(@)
{ my ($self, %args) = @_;
$self->forNested( sub { $_[1]->encode(%args) } );
}
sub encoded() { $_[0]->forNested( sub { $_[1]->encoded } ) }
sub read($$$$)
{ my ($self, $parser, $head, $bodytype) = @_;
my $nest = Mail::Message::Part->new(container => undef);
$nest->readFromParser($parser, $bodytype) or return;
$nest->container($self);
$self->{MMBN_nested} = $nest;
$self;
}
sub fileLocation()
{ my $nested = $_[0]->nested;
( ($nested->head->fileLocation)[0], ($nested->body->fileLocation)[1] );
}
sub moveLocation($)
{ my ($self, $dest) = @_;
$dest or return $self; # no move
my $nested = $self->nested;
$nested->head->moveLocation($dest);
$nested->body->moveLocation($dest);
$self;
}
#--------------------
sub nested() { $_[0]->{MMBN_nested} }
sub forNested($)
{ my ($self, $code) = @_;
my $nested = $self->nested;
my $body = $nested->body;
my $new_body = $code->($self, $body) or return;
$new_body != $body or return $self;
my $new_nested = Mail::Message::Part->new(head => $nested->head->clone, container => undef);
$new_nested->body($new_body);
my $created = (ref $self)->new(based_on => $self, nested => $new_nested);
$new_nested->container($created);
$created;
}
sub toplevel() { my $msg = $_[0]->message; $msg ? $msg->toplevel : undef}
1;
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