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<?php
/**
* @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Mail;
class SearchHelper {
const FLAG_MAP = [
'read' => ['SEEN', true],
'unread' => ['SEEN', false],
'answered' => ['ANSWERED', true],
];
/**
* @param string $filter
* @return \Horde_Imap_Client_Search_Query
*/
public function parseFilterString($filter) {
$query = new \Horde_Imap_Client_Search_Query();
if (!$filter) {
return $query;
}
$tokens = explode(' ', $filter);
$textTokens = [];
foreach ($tokens as $token) {
if (!$this->parseFilterToken($query, $token)) {
$textTokens[] = $token;
}
}
if (count($textTokens)) {
$query->text(implode(' ', $textTokens), false);
}
return $query;
}
private function parseFilterToken(\Horde_Imap_Client_Search_Query $query, $token) {
if (strpos($token, ':')) {
list($type, $param) = explode(':', $token);
$type = strtolower($type);
switch ($type) {
case 'is':
case 'not':
if (array_key_exists($param, self::FLAG_MAP)) {
$flag = self::FLAG_MAP[$param];
$query->flag($flag[0], $type === 'is' ? $flag[1] : !$flag[1]);
return true;
}
break;
case 'from':
case 'to':
case 'cc':
case 'bcc':
case 'subject':
$query->headerText($type, $param);
return true;
}
}
return false;
}
}
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