/usr/share/php/Horde/Imap/Client/Data/Format/Filter/Quote.php is in php-horde-imap-client 2.25.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Copyright 2012-2014 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2012-2014 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
*/
/**
* Stream filter to output a quoted IMAP string.
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2012-2014 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
*/
class Horde_Imap_Client_Data_Format_Filter_Quote extends php_user_filter
{
/**
* @see stream_filter_register()
*/
public function filter($in, $out, &$consumed, $closing)
{
stream_bucket_append($out, stream_bucket_new($this->stream, '"'));
while ($bucket = stream_bucket_make_writeable($in)) {
$consumed += $bucket->datalen;
$bucket->data = addcslashes($bucket->data, '"\\');
stream_bucket_append($out, $bucket);
}
stream_bucket_append($out, stream_bucket_new($this->stream, '"'));
return PSFS_PASS_ON;
}
}
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