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| | # Copyright (C) 2016-2018 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
package PublicInbox::MsgIter;
use strict;
use warnings;
use base qw(Exporter);
our @EXPORT = qw(msg_iter);
use PublicInbox::MIME;
# Like Email::MIME::walk_parts, but this is:
# * non-recursive
# * passes depth and indices to the iterator callback
sub msg_iter ($$) {
my ($mime, $cb) = @_;
my @parts = $mime->subparts;
if (@parts) {
my $i = 0;
@parts = map { [ $_, 1, ++$i ] } @parts;
while (my $p = shift @parts) {
my ($part, $depth, @idx) = @$p;
my @sub = $part->subparts;
if (@sub) {
$depth++;
$i = 0;
@sub = map { [ $_, $depth, @idx, ++$i ] } @sub;
@parts = (@sub, @parts);
} else {
$cb->($p);
}
}
} else {
$cb->([$mime, 0, 0]);
}
}
1;
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