| 1 | <?php |
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| 2 | |
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| 3 | /* |
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| 4 | +-----------------------------------------------------------------------+ |
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| 5 | | program/include/rcube_result_thread.php | |
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| 6 | | | |
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| 7 | | This file is part of the Roundcube Webmail client | |
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| 8 | | Copyright (C) 2005-2011, The Roundcube Dev Team | |
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| 9 | | Copyright (C) 2011, Kolab Systems AG | |
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| 10 | | Licensed under the GNU GPL | |
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| 11 | | | |
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| 12 | | PURPOSE: | |
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| 13 | | THREAD response handler | |
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| 14 | | | |
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| 15 | +-----------------------------------------------------------------------+ |
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| 16 | | Author: Thomas Bruederli <roundcube@gmail.com> | |
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| 17 | | Author: Aleksander Machniak <alec@alec.pl> | |
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| 18 | +-----------------------------------------------------------------------+ |
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| 19 | |
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| 20 | $Id: rcube_imap.php 5347 2011-10-19 06:35:29Z alec $ |
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| 21 | |
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| 22 | */ |
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| 23 | |
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| 24 | |
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| 25 | /** |
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| 26 | * Class for accessing IMAP's THREAD result |
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| 27 | */ |
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| 28 | class rcube_result_thread |
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| 29 | { |
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| 30 | private $raw_data; |
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| 31 | private $mailbox; |
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| 32 | private $meta = array(); |
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| 33 | private $order = 'ASC'; |
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| 34 | |
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| 35 | const SEPARATOR_ELEMENT = ' '; |
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| 36 | const SEPARATOR_ITEM = '~'; |
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| 37 | const SEPARATOR_LEVEL = ':'; |
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| 38 | |
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| 39 | |
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| 40 | /** |
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| 41 | * Object constructor. |
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| 42 | */ |
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| 43 | public function __construct($mailbox = null, $data = null) |
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| 44 | { |
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| 45 | $this->mailbox = $mailbox; |
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| 46 | $this->init($data); |
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| 47 | } |
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| 48 | |
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| 49 | |
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| 50 | /** |
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| 51 | * Initializes object with IMAP command response |
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| 52 | * |
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| 53 | * @param string $data IMAP response string |
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| 54 | */ |
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| 55 | public function init($data = null) |
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| 56 | { |
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| 57 | $this->meta = array(); |
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| 58 | |
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| 59 | $data = explode('*', (string)$data); |
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| 60 | |
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| 61 | // ...skip unilateral untagged server responses |
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| 62 | for ($i=0, $len=count($data); $i<$len; $i++) { |
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| 63 | if (preg_match('/^ THREAD/i', $data[$i])) { |
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| 64 | $data[$i] = substr($data[$i], 7); |
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| 65 | break; |
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| 66 | } |
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| 67 | |
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| 68 | unset($data[$i]); |
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| 69 | } |
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| 70 | |
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| 71 | if (empty($data)) { |
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| 72 | return; |
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| 73 | } |
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| 74 | |
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| 75 | $data = array_shift($data); |
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| 76 | $data = trim($data); |
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| 77 | $data = preg_replace('/[\r\n]/', '', $data); |
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| 78 | $data = preg_replace('/\s+/', ' ', $data); |
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| 79 | |
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| 80 | $this->raw_data = $this->parseThread($data); |
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| 81 | } |
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| 82 | |
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| 83 | |
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| 84 | /** |
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| 85 | * Checks the result from IMAP command |
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| 86 | * |
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| 87 | * @return bool True if the result is an error, False otherwise |
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| 88 | */ |
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| 89 | public function isError() |
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| 90 | { |
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| 91 | return $this->raw_data === null ? true : false; |
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| 92 | } |
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| 93 | |
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| 94 | |
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| 95 | /** |
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| 96 | * Checks if the result is empty |
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| 97 | * |
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| 98 | * @return bool True if the result is empty, False otherwise |
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| 99 | */ |
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| 100 | public function isEmpty() |
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| 101 | { |
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| 102 | return empty($this->raw_data) ? true : false; |
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| 103 | } |
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| 104 | |
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| 105 | |
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| 106 | /** |
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| 107 | * Returns number of elements (threads) in the result |
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| 108 | * |
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| 109 | * @return int Number of elements |
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| 110 | */ |
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| 111 | public function count() |
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| 112 | { |
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| 113 | if ($this->meta['count'] !== null) |
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| 114 | return $this->meta['count']; |
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| 115 | |
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| 116 | if (empty($this->raw_data)) { |
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| 117 | $this->meta['count'] = 0; |
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| 118 | } |
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| 119 | else { |
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| 120 | $this->meta['count'] = 1 + substr_count($this->raw_data, self::SEPARATOR_ELEMENT); |
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| 121 | } |
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| 122 | |
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| 123 | if (!$this->meta['count']) |
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| 124 | $this->meta['messages'] = 0; |
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| 125 | |
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| 126 | return $this->meta['count']; |
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| 127 | } |
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| 128 | |
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| 129 | |
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| 130 | /** |
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| 131 | * Returns number of all messages in the result |
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| 132 | * |
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| 133 | * @return int Number of elements |
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| 134 | */ |
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| 135 | public function countMessages() |
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| 136 | { |
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| 137 | if ($this->meta['messages'] !== null) |
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| 138 | return $this->meta['messages']; |
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| 139 | |
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| 140 | if (empty($this->raw_data)) { |
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| 141 | $this->meta['messages'] = 0; |
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| 142 | } |
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| 143 | else { |
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| 144 | $this->meta['messages'] = 1 |
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| 145 | + substr_count($this->raw_data, self::SEPARATOR_ELEMENT) |
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| 146 | + substr_count($this->raw_data, self::SEPARATOR_ITEM); |
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| 147 | } |
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| 148 | |
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| 149 | if ($this->meta['messages'] == 0 || $this->meta['messages'] == 1) |
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| 150 | $this->meta['count'] = $this->meta['messages']; |
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| 151 | |
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| 152 | return $this->meta['messages']; |
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| 153 | } |
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| 154 | |
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| 155 | |
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| 156 | /** |
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| 157 | * Returns maximum message identifier in the result |
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| 158 | * |
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| 159 | * @return int Maximum message identifier |
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| 160 | */ |
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| 161 | public function max() |
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| 162 | { |
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| 163 | if (!isset($this->meta['max'])) { |
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| 164 | $this->meta['max'] = (int) @max($this->get()); |
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| 165 | } |
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| 166 | return $this->meta['max']; |
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| 167 | } |
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| 168 | |
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| 169 | |
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| 170 | /** |
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| 171 | * Returns minimum message identifier in the result |
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| 172 | * |
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| 173 | * @return int Minimum message identifier |
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| 174 | */ |
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| 175 | public function min() |
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| 176 | { |
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| 177 | if (!isset($this->meta['min'])) { |
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| 178 | $this->meta['min'] = (int) @min($this->get()); |
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| 179 | } |
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| 180 | return $this->meta['min']; |
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| 181 | } |
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| 182 | |
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| 183 | |
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| 184 | /** |
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| 185 | * Slices data set. |
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| 186 | * |
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| 187 | * @param $offset Offset (as for PHP's array_slice()) |
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| 188 | * @param $length Number of elements (as for PHP's array_slice()) |
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| 189 | */ |
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| 190 | public function slice($offset, $length) |
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| 191 | { |
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| 192 | $data = explode(self::SEPARATOR_ELEMENT, $this->raw_data); |
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| 193 | $data = array_slice($data, $offset, $length); |
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| 194 | |
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| 195 | $this->meta = array(); |
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| 196 | $this->meta['count'] = count($data); |
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| 197 | $this->raw_data = implode(self::SEPARATOR_ELEMENT, $data); |
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| 198 | } |
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| 199 | |
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| 200 | |
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| 201 | /** |
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| 202 | * Filters data set. Removes threads not listed in $roots list. |
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| 203 | * |
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| 204 | * @param array $roots List of IDs of thread roots. |
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| 205 | */ |
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| 206 | public function filter($roots) |
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| 207 | { |
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| 208 | $datalen = strlen($this->raw_data); |
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| 209 | $roots = array_flip($roots); |
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| 210 | $result = ''; |
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| 211 | $start = 0; |
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| 212 | |
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| 213 | $this->meta = array(); |
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| 214 | $this->meta['count'] = 0; |
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| 215 | |
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| 216 | while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) |
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| 217 | || ($start < $datalen && ($pos = $datalen)) |
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| 218 | ) { |
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| 219 | $len = $pos - $start; |
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| 220 | $elem = substr($this->raw_data, $start, $len); |
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| 221 | $start = $pos + 1; |
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| 222 | |
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| 223 | // extract root message ID |
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| 224 | if ($npos = strpos($elem, self::SEPARATOR_ITEM)) { |
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| 225 | $root = (int) substr($elem, 0, $npos); |
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| 226 | } |
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| 227 | else { |
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| 228 | $root = $elem; |
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| 229 | } |
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| 230 | |
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| 231 | if (isset($roots[$root])) { |
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| 232 | $this->meta['count']++; |
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| 233 | $result .= self::SEPARATOR_ELEMENT . $elem; |
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| 234 | } |
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| 235 | } |
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| 236 | |
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| 237 | $this->raw_data = ltrim($result, self::SEPARATOR_ELEMENT); |
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| 238 | } |
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| 239 | |
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| 240 | |
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| 241 | /** |
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| 242 | * Reverts order of elements in the result |
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| 243 | */ |
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| 244 | public function revert() |
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| 245 | { |
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| 246 | $this->order = $this->order == 'ASC' ? 'DESC' : 'ASC'; |
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| 247 | |
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| 248 | if (empty($this->raw_data)) { |
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| 249 | return; |
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| 250 | } |
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| 251 | |
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| 252 | $this->meta['pos'] = array(); |
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| 253 | $datalen = strlen($this->raw_data); |
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| 254 | $result = ''; |
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| 255 | $start = 0; |
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| 256 | |
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| 257 | while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) |
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| 258 | || ($start < $datalen && ($pos = $datalen)) |
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| 259 | ) { |
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| 260 | $len = $pos - $start; |
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| 261 | $elem = substr($this->raw_data, $start, $len); |
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| 262 | $start = $pos + 1; |
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| 263 | |
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| 264 | $result = $elem . self::SEPARATOR_ELEMENT . $result; |
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| 265 | } |
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| 266 | |
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| 267 | $this->raw_data = rtrim($result, self::SEPARATOR_ELEMENT); |
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| 268 | } |
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| 269 | |
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| 270 | |
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| 271 | /** |
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| 272 | * Check if the given message ID exists in the object |
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| 273 | * |
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| 274 | * @param int $msgid Message ID |
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| 275 | * @param bool $get_index When enabled element's index will be returned. |
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| 276 | * Elements are indexed starting with 0 |
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| 277 | * |
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| 278 | * @return boolean True on success, False if message ID doesn't exist |
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| 279 | */ |
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| 280 | public function exists($msgid, $get_index = false) |
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| 281 | { |
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| 282 | $msgid = (int) $msgid; |
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| 283 | $begin = implode('|', array( |
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| 284 | '^', |
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| 285 | preg_quote(self::SEPARATOR_ELEMENT, '/'), |
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| 286 | preg_quote(self::SEPARATOR_LEVEL, '/'), |
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| 287 | )); |
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| 288 | $end = implode('|', array( |
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| 289 | '$', |
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| 290 | preg_quote(self::SEPARATOR_ELEMENT, '/'), |
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| 291 | preg_quote(self::SEPARATOR_ITEM, '/'), |
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| 292 | )); |
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| 293 | |
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| 294 | if (preg_match("/($begin)$msgid($end)/", $this->raw_data, $m, |
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| 295 | $get_index ? PREG_OFFSET_CAPTURE : null) |
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| 296 | ) { |
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| 297 | if ($get_index) { |
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| 298 | $idx = 0; |
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| 299 | if ($m[0][1]) { |
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| 300 | $idx = substr_count($this->raw_data, self::SEPARATOR_ELEMENT, 0, $m[0][1]+1) |
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| 301 | + substr_count($this->raw_data, self::SEPARATOR_ITEM, 0, $m[0][1]+1); |
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| 302 | } |
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| 303 | // cache position of this element, so we can use it in getElement() |
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| 304 | $this->meta['pos'][$idx] = (int)$m[0][1]; |
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| 305 | |
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| 306 | return $idx; |
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| 307 | } |
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| 308 | return true; |
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| 309 | } |
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| 310 | |
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| 311 | return false; |
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| 312 | } |
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| 313 | |
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| 314 | |
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| 315 | /** |
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| 316 | * Return IDs of all messages in the result. Threaded data will be flattened. |
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| 317 | * |
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| 318 | * @return array List of message identifiers |
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| 319 | */ |
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| 320 | public function get() |
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| 321 | { |
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| 322 | if (empty($this->raw_data)) { |
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| 323 | return array(); |
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| 324 | } |
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| 325 | |
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| 326 | $regexp = '/(' . preg_quote(self::SEPARATOR_ELEMENT, '/') |
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| 327 | . '|' . preg_quote(self::SEPARATOR_ITEM, '/') . '[0-9]+' . preg_quote(self::SEPARATOR_LEVEL, '/') |
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| 328 | .')/'; |
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| 329 | |
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| 330 | return preg_split($regexp, $this->raw_data); |
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| 331 | } |
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| 332 | |
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| 333 | |
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| 334 | /** |
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| 335 | * Return all messages in the result. |
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| 336 | * |
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| 337 | * @return array List of message identifiers |
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| 338 | */ |
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| 339 | public function getCompressed() |
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| 340 | { |
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| 341 | if (empty($this->raw_data)) { |
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| 342 | return ''; |
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| 343 | } |
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| 344 | |
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| 345 | return rcube_imap_generic::compressMessageSet($this->get()); |
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| 346 | } |
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| 347 | |
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| 348 | |
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| 349 | /** |
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| 350 | * Return result element at specified index (all messages, not roots) |
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| 351 | * |
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| 352 | * @param int|string $index Element's index or "FIRST" or "LAST" |
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| 353 | * |
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| 354 | * @return int Element value |
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| 355 | */ |
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| 356 | public function getElement($index) |
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| 357 | { |
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| 358 | $count = $this->count(); |
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| 359 | |
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| 360 | if (!$count) { |
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| 361 | return null; |
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| 362 | } |
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| 363 | |
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| 364 | // first element |
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| 365 | if ($index === 0 || $index === '0' || $index === 'FIRST') { |
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| 366 | preg_match('/^([0-9]+)/', $this->raw_data, $m); |
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| 367 | $result = (int) $m[1]; |
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| 368 | return $result; |
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| 369 | } |
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| 370 | |
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| 371 | // last element |
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| 372 | if ($index === 'LAST' || $index == $count-1) { |
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| 373 | preg_match('/([0-9]+)$/', $this->raw_data, $m); |
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| 374 | $result = (int) $m[1]; |
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| 375 | return $result; |
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| 376 | } |
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| 377 | |
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| 378 | // do we know the position of the element or the neighbour of it? |
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| 379 | if (!empty($this->meta['pos'])) { |
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| 380 | $element = preg_quote(self::SEPARATOR_ELEMENT, '/'); |
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| 381 | $item = preg_quote(self::SEPARATOR_ITEM, '/') . '[0-9]+' . preg_quote(self::SEPARATOR_LEVEL, '/') .'?'; |
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| 382 | $regexp = '(' . $element . '|' . $item . ')'; |
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| 383 | |
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| 384 | if (isset($this->meta['pos'][$index])) { |
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| 385 | if (preg_match('/([0-9]+)/', $this->raw_data, $m, null, $this->meta['pos'][$index])) |
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| 386 | $result = $m[1]; |
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| 387 | } |
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| 388 | else if (isset($this->meta['pos'][$index-1])) { |
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| 389 | // get chunk of data after previous element |
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| 390 | $data = substr($this->raw_data, $this->meta['pos'][$index-1]+1, 50); |
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| 391 | $data = preg_replace('/^[0-9]+/', '', $data); // remove UID at $index position |
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| 392 | $data = preg_replace("/^$regexp/", '', $data); // remove separator |
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| 393 | if (preg_match('/^([0-9]+)/', $data, $m)) |
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| 394 | $result = $m[1]; |
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| 395 | } |
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| 396 | else if (isset($this->meta['pos'][$index+1])) { |
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| 397 | // get chunk of data before next element |
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| 398 | $pos = max(0, $this->meta['pos'][$index+1] - 50); |
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| 399 | $len = min(50, $this->meta['pos'][$index+1]); |
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| 400 | $data = substr($this->raw_data, $pos, $len); |
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| 401 | $data = preg_replace("/$regexp\$/", '', $data); // remove separator |
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| 402 | |
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| 403 | if (preg_match('/([0-9]+)$/', $data, $m)) |
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| 404 | $result = $m[1]; |
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| 405 | } |
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| 406 | |
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| 407 | if (isset($result)) { |
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| 408 | return (int) $result; |
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| 409 | } |
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| 410 | } |
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| 411 | |
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| 412 | // Finally use less effective method |
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| 413 | $data = $this->get(); |
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| 414 | |
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| 415 | return $data[$index]; |
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| 416 | } |
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| 417 | |
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| 418 | |
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| 419 | /** |
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| 420 | * Returns response parameters e.g. MAILBOX, ORDER |
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| 421 | * |
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| 422 | * @param string $param Parameter name |
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| 423 | * |
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| 424 | * @return array|string Response parameters or parameter value |
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| 425 | */ |
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| 426 | public function getParameters($param=null) |
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| 427 | { |
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| 428 | $params = $this->params; |
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| 429 | $params['MAILBOX'] = $this->mailbox; |
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| 430 | $params['ORDER'] = $this->order; |
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| 431 | |
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| 432 | if ($param !== null) { |
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| 433 | return $params[$param]; |
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| 434 | } |
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| 435 | |
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| 436 | return $params; |
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| 437 | } |
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| 438 | |
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| 439 | |
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| 440 | /** |
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| 441 | * THREAD=REFS sorting implementation (based on provided index) |
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| 442 | * |
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| 443 | * @param rcube_result_index $index Sorted message identifiers |
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| 444 | */ |
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| 445 | public function sort($index) |
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| 446 | { |
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| 447 | $this->sort_order = $index->getParameters('ORDER'); |
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| 448 | |
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| 449 | if (empty($this->raw_data)) { |
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| 450 | return; |
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| 451 | } |
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| 452 | |
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| 453 | // when sorting search result it's good to make the index smaller |
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| 454 | if ($index->count() != $this->countMessages()) { |
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| 455 | $index->intersect($this->get()); |
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| 456 | } |
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| 457 | |
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| 458 | $result = array_fill_keys($index->get(), null); |
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| 459 | $datalen = strlen($this->raw_data); |
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| 460 | $start = 0; |
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| 461 | |
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| 462 | // Here we're parsing raw_data twice, we want only one big array |
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| 463 | // in memory at a time |
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| 464 | |
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| 465 | // Assign roots |
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| 466 | while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) |
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| 467 | || ($start < $datalen && ($pos = $datalen)) |
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| 468 | ) { |
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| 469 | $len = $pos - $start; |
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| 470 | $elem = substr($this->raw_data, $start, $len); |
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| 471 | $start = $pos + 1; |
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| 472 | |
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| 473 | $items = explode(self::SEPARATOR_ITEM, $elem); |
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| 474 | $root = (int) array_shift($items); |
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| 475 | |
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| 476 | $result[$elem] = $elem; |
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| 477 | foreach ($items as $item) { |
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| 478 | list($lv, $id) = explode(self::SEPARATOR_LEVEL, $item); |
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| 479 | $result[$id] = $root; |
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| 480 | } |
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| 481 | } |
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| 482 | |
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| 483 | // get only unique roots |
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| 484 | $result = array_filter($result); // make sure there are no nulls |
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| 485 | $result = array_unique($result, SORT_NUMERIC); |
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| 486 | |
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| 487 | // Re-sort raw data |
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| 488 | $result = array_fill_keys($result, null); |
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| 489 | $start = 0; |
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| 490 | |
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| 491 | while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) |
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| 492 | || ($start < $datalen && ($pos = $datalen)) |
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| 493 | ) { |
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| 494 | $len = $pos - $start; |
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| 495 | $elem = substr($this->raw_data, $start, $len); |
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| 496 | $start = $pos + 1; |
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| 497 | |
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| 498 | $npos = strpos($elem, self::SEPARATOR_ITEM); |
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| 499 | $root = (int) ($npos ? substr($elem, 0, $npos) : $elem); |
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| 500 | |
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| 501 | $result[$root] = $elem; |
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| 502 | } |
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| 503 | |
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| 504 | $this->raw_data = implode(self::SEPARATOR_ELEMENT, $result); |
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| 505 | } |
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| 506 | |
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| 507 | |
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| 508 | /** |
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| 509 | * Returns data as tree |
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| 510 | * |
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| 511 | * @return array Data tree |
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| 512 | */ |
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| 513 | public function getTree() |
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| 514 | { |
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| 515 | $datalen = strlen($this->raw_data); |
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| 516 | $result = array(); |
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| 517 | $start = 0; |
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| 518 | |
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| 519 | while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) |
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| 520 | || ($start < $datalen && ($pos = $datalen)) |
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| 521 | ) { |
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| 522 | $len = $pos - $start; |
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| 523 | $elem = substr($this->raw_data, $start, $len); |
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| 524 | $items = explode(self::SEPARATOR_ITEM, $elem); |
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| 525 | $result[array_shift($items)] = $this->buildThread($items); |
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| 526 | $start = $pos + 1; |
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| 527 | } |
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| 528 | |
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| 529 | return $result; |
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| 530 | } |
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| 531 | |
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| 532 | |
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| 533 | /** |
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| 534 | * Returns thread depth and children data |
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| 535 | * |
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| 536 | * @return array Thread data |
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| 537 | */ |
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| 538 | public function getThreadData() |
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| 539 | { |
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| 540 | $data = $this->getTree(); |
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| 541 | $depth = array(); |
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| 542 | $children = array(); |
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| 543 | |
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| 544 | $this->buildThreadData($data, $depth, $children); |
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| 545 | |
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| 546 | return array($depth, $children); |
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| 547 | } |
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| 548 | |
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| 549 | |
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| 550 | /** |
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| 551 | * Creates 'depth' and 'children' arrays from stored thread 'tree' data. |
|---|
| 552 | */ |
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| 553 | private function buildThreadData($data, &$depth, &$children, $level = 0) |
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| 554 | { |
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| 555 | foreach ((array)$data as $key => $val) { |
|---|
| 556 | $children[$key] = !empty($val); |
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| 557 | $depth[$key] = $level; |
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| 558 | if (!empty($val)) |
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| 559 | $this->buildThreadData($val, $depth, $children, $level + 1); |
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| 560 | } |
|---|
| 561 | } |
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| 562 | |
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| 563 | |
|---|
| 564 | /** |
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| 565 | * Converts part of the raw thread into an array |
|---|
| 566 | */ |
|---|
| 567 | private function buildThread($items, $level = 1, &$pos = 0) |
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| 568 | { |
|---|
| 569 | $result = array(); |
|---|
| 570 | |
|---|
| 571 | for ($len=count($items); $pos < $len; $pos++) { |
|---|
| 572 | list($lv, $id) = explode(self::SEPARATOR_LEVEL, $items[$pos]); |
|---|
| 573 | if ($level == $lv) { |
|---|
| 574 | $pos++; |
|---|
| 575 | $result[$id] = $this->buildThread($items, $level+1, $pos); |
|---|
| 576 | } |
|---|
| 577 | else { |
|---|
| 578 | $pos--; |
|---|
| 579 | break; |
|---|
| 580 | } |
|---|
| 581 | } |
|---|
| 582 | |
|---|
| 583 | return $result; |
|---|
| 584 | } |
|---|
| 585 | |
|---|
| 586 | |
|---|
| 587 | /** |
|---|
| 588 | * IMAP THREAD response parser |
|---|
| 589 | */ |
|---|
| 590 | private function parseThread($str, $begin = 0, $end = 0, $depth = 0) |
|---|
| 591 | { |
|---|
| 592 | // Don't be tempted to change $str to pass by reference to speed this up - it will slow it down by about |
|---|
| 593 | // 7 times instead :-) See comments on http://uk2.php.net/references and this article: |
|---|
| 594 | // http://derickrethans.nl/files/phparch-php-variables-article.pdf |
|---|
| 595 | $node = ''; |
|---|
| 596 | if (!$end) { |
|---|
| 597 | $end = strlen($str); |
|---|
| 598 | } |
|---|
| 599 | |
|---|
| 600 | // Let's try to store data in max. compacted stracture as a string, |
|---|
| 601 | // arrays handling is much more expensive |
|---|
| 602 | // For the following structure: THREAD (2)(3 6 (4 23)(44 7 96)) |
|---|
| 603 | // -- 2 |
|---|
| 604 | // |
|---|
| 605 | // -- 3 |
|---|
| 606 | // \-- 6 |
|---|
| 607 | // |-- 4 |
|---|
| 608 | // | \-- 23 |
|---|
| 609 | // | |
|---|
| 610 | // \-- 44 |
|---|
| 611 | // \-- 7 |
|---|
| 612 | // \-- 96 |
|---|
| 613 | // |
|---|
| 614 | // The output will be: 2,3^1:6^2:4^3:23^2:44^3:7^4:96 |
|---|
| 615 | |
|---|
| 616 | if ($str[$begin] != '(') { |
|---|
| 617 | $stop = $begin + strspn($str, '1234567890', $begin, $end - $begin); |
|---|
| 618 | $msg = substr($str, $begin, $stop - $begin); |
|---|
| 619 | if (!$msg) { |
|---|
| 620 | return $node; |
|---|
| 621 | } |
|---|
| 622 | |
|---|
| 623 | $this->meta['messages']++; |
|---|
| 624 | |
|---|
| 625 | $node .= ($depth ? self::SEPARATOR_ITEM.$depth.self::SEPARATOR_LEVEL : '').$msg; |
|---|
| 626 | |
|---|
| 627 | if ($stop + 1 < $end) { |
|---|
| 628 | $node .= $this->parseThread($str, $stop + 1, $end, $depth + 1); |
|---|
| 629 | } |
|---|
| 630 | } else { |
|---|
| 631 | $off = $begin; |
|---|
| 632 | while ($off < $end) { |
|---|
| 633 | $start = $off; |
|---|
| 634 | $off++; |
|---|
| 635 | $n = 1; |
|---|
| 636 | while ($n > 0) { |
|---|
| 637 | $p = strpos($str, ')', $off); |
|---|
| 638 | if ($p === false) { |
|---|
| 639 | // error, wrong structure, mismatched brackets in IMAP THREAD response |
|---|
| 640 | // @TODO: write error to the log or maybe set $this->raw_data = null; |
|---|
| 641 | return $node; |
|---|
| 642 | } |
|---|
| 643 | $p1 = strpos($str, '(', $off); |
|---|
| 644 | if ($p1 !== false && $p1 < $p) { |
|---|
| 645 | $off = $p1 + 1; |
|---|
| 646 | $n++; |
|---|
| 647 | } else { |
|---|
| 648 | $off = $p + 1; |
|---|
| 649 | $n--; |
|---|
| 650 | } |
|---|
| 651 | } |
|---|
| 652 | |
|---|
| 653 | $thread = $this->parseThread($str, $start + 1, $off - 1, $depth); |
|---|
| 654 | if ($thread) { |
|---|
| 655 | if (!$depth) { |
|---|
| 656 | if ($node) { |
|---|
| 657 | $node .= self::SEPARATOR_ELEMENT; |
|---|
| 658 | } |
|---|
| 659 | } |
|---|
| 660 | $node .= $thread; |
|---|
| 661 | } |
|---|
| 662 | } |
|---|
| 663 | } |
|---|
| 664 | |
|---|
| 665 | return $node; |
|---|
| 666 | } |
|---|
| 667 | } |
|---|