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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\Mail;
use Horde_Imap_Client_Ids;
use function array_slice;
use function array_splice;
use function max;
use function strlen;
function array_flat_map(callable $map, array $data): array {
return array_merge([], ...array_map($map, $data));
}
/**
* @param int[] $uids
* @return Horde_Imap_Client_Ids[]
*/
function chunk_uid_sequence(array $uids, int $bytes): array {
$chunks = [];
while ($uids !== []) {
$take = count($uids);
while (strlen((new Horde_Imap_Client_Ids(array_slice($uids, 0, $take)))->tostring) >= $bytes) {
$take = (int)((float)$take * 0.75);
}
$chunks[] = new Horde_Imap_Client_Ids(
array_splice($uids, 0, max($take, 1))
);
}
return $chunks;
}