| @@ -1,646 +1,0 @@ | ||
| 1 | -<?php | |
| 2 | - | |
| 3 | -/** | |
| 4 | - * +-----------------------------------------------------------------------+ | |
| 5 | - * | This file is part of the Roundcube Webmail client | | |
| 6 | - * | | | |
| 7 | - * | Copyright (C) The Roundcube Dev Team | | |
| 8 | - * | Copyright (C) Kolab Systems AG | | |
| 9 | - * | | | |
| 10 | - * | Licensed under the GNU General Public License version 3 or | | |
| 11 | - * | any later version with exceptions for skins & plugins. | | |
| 12 | - * | See the README file for a full license statement. | | |
| 13 | - * | | | |
| 14 | - * | PURPOSE: | | |
| 15 | - * | THREAD response handler | | |
| 16 | - * +-----------------------------------------------------------------------+ | |
| 17 | - * | Author: Thomas Bruederli <[email protected]> | | |
| 18 | - * | Author: Aleksander Machniak <[email protected]> | | |
| 19 | - * +-----------------------------------------------------------------------+ | |
| 20 | - */ | |
| 21 | - | |
| 22 | -namespace AcyMailing\Libraries\Imap2\Roundcube; | |
| 23 | - | |
| 24 | -/** | |
| 25 | - * Class for accessing IMAP's THREAD result | |
| 26 | - * | |
| 27 | - * @package Framework | |
| 28 | - * @subpackage Storage | |
| 29 | - */ | |
| 30 | -class ResultThread | |
| 31 | -{ | |
| 32 | - public $incomplete = false; | |
| 33 | - | |
| 34 | - protected $raw_data; | |
| 35 | - protected $mailbox; | |
| 36 | - protected $meta = []; | |
| 37 | - protected $order = 'ASC'; | |
| 38 | - | |
| 39 | - const SEPARATOR_ELEMENT = ' '; | |
| 40 | - const SEPARATOR_ITEM = '~'; | |
| 41 | - const SEPARATOR_LEVEL = ':'; | |
| 42 | - | |
| 43 | - | |
| 44 | - /** | |
| 45 | - * Object constructor. | |
| 46 | - */ | |
| 47 | - public function __construct($mailbox = null, $data = null) | |
| 48 | - { | |
| 49 | - $this->mailbox = $mailbox; | |
| 50 | - $this->init($data); | |
| 51 | - } | |
| 52 | - | |
| 53 | - /** | |
| 54 | - * Initializes object with IMAP command response | |
| 55 | - * | |
| 56 | - * @param string $data IMAP response string | |
| 57 | - */ | |
| 58 | - public function init($data = null) | |
| 59 | - { | |
| 60 | - $this->meta = []; | |
| 61 | - | |
| 62 | - $data = explode('*', (string)$data); | |
| 63 | - | |
| 64 | - // ...skip unilateral untagged server responses | |
| 65 | - for ($i = 0, $len = count($data) ; $i < $len ; $i++) { | |
| 66 | - if (preg_match('/^ THREAD/i', $data[$i])) { | |
| 67 | - // valid response, initialize raw_data for is_error() | |
| 68 | - $this->raw_data = ''; | |
| 69 | - $data[$i] = substr($data[$i], 7); | |
| 70 | - break; | |
| 71 | - } | |
| 72 | - | |
| 73 | - unset($data[$i]); | |
| 74 | - } | |
| 75 | - | |
| 76 | - if (empty($data)) { | |
| 77 | - return; | |
| 78 | - } | |
| 79 | - | |
| 80 | - $data = array_shift($data); | |
| 81 | - $data = trim($data); | |
| 82 | - $data = preg_replace('/[\r\n]/', '', $data); | |
| 83 | - $data = preg_replace('/\s+/', ' ', $data); | |
| 84 | - | |
| 85 | - $this->raw_data = $this->parse_thread($data); | |
| 86 | - } | |
| 87 | - | |
| 88 | - /** | |
| 89 | - * Checks the result from IMAP command | |
| 90 | - * | |
| 91 | - * @return bool True if the result is an error, False otherwise | |
| 92 | - */ | |
| 93 | - public function is_error() | |
| 94 | - { | |
| 95 | - return $this->raw_data === null; | |
| 96 | - } | |
| 97 | - | |
| 98 | - /** | |
| 99 | - * Checks if the result is empty | |
| 100 | - * | |
| 101 | - * @return bool True if the result is empty, False otherwise | |
| 102 | - */ | |
| 103 | - public function is_empty() | |
| 104 | - { | |
| 105 | - return empty($this->raw_data); | |
| 106 | - } | |
| 107 | - | |
| 108 | - /** | |
| 109 | - * Returns number of elements (threads) in the result | |
| 110 | - * | |
| 111 | - * @return int Number of elements | |
| 112 | - */ | |
| 113 | - public function count() | |
| 114 | - { | |
| 115 | - if (isset($this->meta['count']) && $this->meta['count'] !== null) { | |
| 116 | - return $this->meta['count']; | |
| 117 | - } | |
| 118 | - | |
| 119 | - if (empty($this->raw_data)) { | |
| 120 | - $this->meta['count'] = 0; | |
| 121 | - } else { | |
| 122 | - $this->meta['count'] = 1 + substr_count($this->raw_data, self::SEPARATOR_ELEMENT); | |
| 123 | - } | |
| 124 | - | |
| 125 | - if (!$this->meta['count']) { | |
| 126 | - $this->meta['messages'] = 0; | |
| 127 | - } | |
| 128 | - | |
| 129 | - return $this->meta['count']; | |
| 130 | - } | |
| 131 | - | |
| 132 | - /** | |
| 133 | - * Returns number of all messages in the result | |
| 134 | - * | |
| 135 | - * @return int Number of elements | |
| 136 | - */ | |
| 137 | - public function count_messages() | |
| 138 | - { | |
| 139 | - if ($this->meta['messages'] !== null) { | |
| 140 | - return $this->meta['messages']; | |
| 141 | - } | |
| 142 | - | |
| 143 | - if (empty($this->raw_data)) { | |
| 144 | - $this->meta['messages'] = 0; | |
| 145 | - } else { | |
| 146 | - $this->meta['messages'] = 1 | |
| 147 | - + substr_count($this->raw_data, self::SEPARATOR_ELEMENT) | |
| 148 | - + substr_count($this->raw_data, self::SEPARATOR_ITEM); | |
| 149 | - } | |
| 150 | - | |
| 151 | - if ($this->meta['messages'] == 0 || $this->meta['messages'] == 1) { | |
| 152 | - $this->meta['count'] = $this->meta['messages']; | |
| 153 | - } | |
| 154 | - | |
| 155 | - return $this->meta['messages']; | |
| 156 | - } | |
| 157 | - | |
| 158 | - /** | |
| 159 | - * Returns maximum message identifier in the result | |
| 160 | - * | |
| 161 | - * @return int Maximum message identifier | |
| 162 | - */ | |
| 163 | - public function max() | |
| 164 | - { | |
| 165 | - if (!isset($this->meta['max'])) { | |
| 166 | - $this->meta['max'] = (int)@max($this->get()); | |
| 167 | - } | |
| 168 | - | |
| 169 | - return $this->meta['max']; | |
| 170 | - } | |
| 171 | - | |
| 172 | - /** | |
| 173 | - * Returns minimum message identifier in the result | |
| 174 | - * | |
| 175 | - * @return int Minimum message identifier | |
| 176 | - */ | |
| 177 | - public function min() | |
| 178 | - { | |
| 179 | - if (!isset($this->meta['min'])) { | |
| 180 | - $this->meta['min'] = (int)@min($this->get()); | |
| 181 | - } | |
| 182 | - | |
| 183 | - return $this->meta['min']; | |
| 184 | - } | |
| 185 | - | |
| 186 | - /** | |
| 187 | - * Slices data set. | |
| 188 | - * | |
| 189 | - * @param $offset (as for PHP's array_slice()) | |
| 190 | - * @param $length Number of elements (as for PHP's array_slice()) | |
| 191 | - */ | |
| 192 | - public function slice($offset, $length) | |
| 193 | - { | |
| 194 | - $data = explode(self::SEPARATOR_ELEMENT, $this->raw_data); | |
| 195 | - $data = array_slice($data, $offset, $length); | |
| 196 | - | |
| 197 | - $this->meta = []; | |
| 198 | - $this->meta['count'] = count($data); | |
| 199 | - $this->raw_data = implode(self::SEPARATOR_ELEMENT, $data); | |
| 200 | - } | |
| 201 | - | |
| 202 | - /** | |
| 203 | - * Filters data set. Removes threads not listed in $roots list. | |
| 204 | - * | |
| 205 | - * @param array $roots List of IDs of thread roots. | |
| 206 | - */ | |
| 207 | - public function filter($roots) | |
| 208 | - { | |
| 209 | - $datalen = strlen($this->raw_data); | |
| 210 | - $roots = array_flip($roots); | |
| 211 | - $result = ''; | |
| 212 | - $start = 0; | |
| 213 | - | |
| 214 | - $this->meta = []; | |
| 215 | - $this->meta['count'] = 0; | |
| 216 | - | |
| 217 | - while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) | |
| 218 | - || ($start < $datalen && ($pos = $datalen)) | |
| 219 | - ) { | |
| 220 | - $len = $pos - $start; | |
| 221 | - $elem = substr($this->raw_data, $start, $len); | |
| 222 | - $start = $pos + 1; | |
| 223 | - | |
| 224 | - // extract root message ID | |
| 225 | - if ($npos = strpos($elem, self::SEPARATOR_ITEM)) { | |
| 226 | - $root = (int)substr($elem, 0, $npos); | |
| 227 | - } else { | |
| 228 | - $root = $elem; | |
| 229 | - } | |
| 230 | - | |
| 231 | - if (isset($roots[$root])) { | |
| 232 | - $this->meta['count']++; | |
| 233 | - $result .= self::SEPARATOR_ELEMENT.$elem; | |
| 234 | - } | |
| 235 | - } | |
| 236 | - | |
| 237 | - $this->raw_data = ltrim($result, self::SEPARATOR_ELEMENT); | |
| 238 | - } | |
| 239 | - | |
| 240 | - /** | |
| 241 | - * Reverts order of elements in the result | |
| 242 | - */ | |
| 243 | - public function revert() | |
| 244 | - { | |
| 245 | - $this->order = $this->order == 'ASC' ? 'DESC' : 'ASC'; | |
| 246 | - | |
| 247 | - if (empty($this->raw_data)) { | |
| 248 | - return; | |
| 249 | - } | |
| 250 | - | |
| 251 | - $data = explode(self::SEPARATOR_ELEMENT, $this->raw_data); | |
| 252 | - $data = array_reverse($data); | |
| 253 | - $this->raw_data = implode(self::SEPARATOR_ELEMENT, $data); | |
| 254 | - | |
| 255 | - $this->meta['pos'] = []; | |
| 256 | - } | |
| 257 | - | |
| 258 | - /** | |
| 259 | - * Check if the given message ID exists in the object | |
| 260 | - * | |
| 261 | - * @param int $msgid Message ID | |
| 262 | - * @param bool $get_index When enabled element's index will be returned. | |
| 263 | - * Elements are indexed starting with 0 | |
| 264 | - * | |
| 265 | - * @return boolean True on success, False if message ID doesn't exist | |
| 266 | - */ | |
| 267 | - public function exists($msgid, $get_index = false) | |
| 268 | - { | |
| 269 | - $msgid = (int)$msgid; | |
| 270 | - $begin = implode('|', [ | |
| 271 | - '^', | |
| 272 | - preg_quote(self::SEPARATOR_ELEMENT, '/'), | |
| 273 | - preg_quote(self::SEPARATOR_LEVEL, '/'), | |
| 274 | - ]); | |
| 275 | - $end = implode('|', [ | |
| 276 | - '$', | |
| 277 | - preg_quote(self::SEPARATOR_ELEMENT, '/'), | |
| 278 | - preg_quote(self::SEPARATOR_ITEM, '/'), | |
| 279 | - ]); | |
| 280 | - | |
| 281 | - if (preg_match( | |
| 282 | - "/($begin)$msgid($end)/", | |
| 283 | - $this->raw_data, | |
| 284 | - $m, | |
| 285 | - $get_index ? PREG_OFFSET_CAPTURE : null | |
| 286 | - ) | |
| 287 | - ) { | |
| 288 | - if ($get_index) { | |
| 289 | - $idx = 0; | |
| 290 | - if ($m[0][1]) { | |
| 291 | - $idx = substr_count($this->raw_data, self::SEPARATOR_ELEMENT, 0, $m[0][1] + 1) | |
| 292 | - + substr_count($this->raw_data, self::SEPARATOR_ITEM, 0, $m[0][1] + 1); | |
| 293 | - } | |
| 294 | - // cache position of this element, so we can use it in get_element() | |
| 295 | - $this->meta['pos'][$idx] = (int)$m[0][1]; | |
| 296 | - | |
| 297 | - return $idx; | |
| 298 | - } | |
| 299 | - | |
| 300 | - return true; | |
| 301 | - } | |
| 302 | - | |
| 303 | - return false; | |
| 304 | - } | |
| 305 | - | |
| 306 | - /** | |
| 307 | - * Return IDs of all messages in the result. Threaded data will be flattened. | |
| 308 | - * | |
| 309 | - * @return array List of message identifiers | |
| 310 | - */ | |
| 311 | - public function get() | |
| 312 | - { | |
| 313 | - if (empty($this->raw_data)) { | |
| 314 | - return []; | |
| 315 | - } | |
| 316 | - | |
| 317 | - $regexp = '/('.preg_quote(self::SEPARATOR_ELEMENT, '/') | |
| 318 | - .'|'.preg_quote(self::SEPARATOR_ITEM, '/').'[0-9]+'.preg_quote(self::SEPARATOR_LEVEL, '/') | |
| 319 | - .')/'; | |
| 320 | - | |
| 321 | - return preg_split($regexp, $this->raw_data); | |
| 322 | - } | |
| 323 | - | |
| 324 | - /** | |
| 325 | - * Return result element at specified index (all messages, not roots) | |
| 326 | - * | |
| 327 | - * @param int|string $index Element's index or "FIRST" or "LAST" | |
| 328 | - * | |
| 329 | - * @return int Element value | |
| 330 | - */ | |
| 331 | - public function get_element($index) | |
| 332 | - { | |
| 333 | - $count = $this->count(); | |
| 334 | - | |
| 335 | - if (!$count) { | |
| 336 | - return null; | |
| 337 | - } | |
| 338 | - | |
| 339 | - // first element | |
| 340 | - if ($index === 0 || $index === '0' || $index === 'FIRST') { | |
| 341 | - preg_match('/^([0-9]+)/', $this->raw_data, $m); | |
| 342 | - $result = (int)$m[1]; | |
| 343 | - | |
| 344 | - return $result; | |
| 345 | - } | |
| 346 | - | |
| 347 | - // last element | |
| 348 | - if ($index === 'LAST' || $index == $count - 1) { | |
| 349 | - preg_match('/([0-9]+)$/', $this->raw_data, $m); | |
| 350 | - $result = (int)$m[1]; | |
| 351 | - | |
| 352 | - return $result; | |
| 353 | - } | |
| 354 | - | |
| 355 | - // do we know the position of the element or the neighbour of it? | |
| 356 | - if (!empty($this->meta['pos'])) { | |
| 357 | - $element = preg_quote(self::SEPARATOR_ELEMENT, '/'); | |
| 358 | - $item = preg_quote(self::SEPARATOR_ITEM, '/').'[0-9]+'.preg_quote(self::SEPARATOR_LEVEL, '/').'?'; | |
| 359 | - $regexp = '('.$element.'|'.$item.')'; | |
| 360 | - | |
| 361 | - if (isset($this->meta['pos'][$index])) { | |
| 362 | - if (preg_match('/([0-9]+)/', $this->raw_data, $m, null, $this->meta['pos'][$index])) { | |
| 363 | - $result = $m[1]; | |
| 364 | - } | |
| 365 | - } elseif (isset($this->meta['pos'][$index - 1])) { | |
| 366 | - // get chunk of data after previous element | |
| 367 | - $data = substr($this->raw_data, $this->meta['pos'][$index - 1] + 1, 50); | |
| 368 | - $data = preg_replace('/^[0-9]+/', '', $data); // remove UID at $index position | |
| 369 | - $data = preg_replace("/^$regexp/", '', $data); // remove separator | |
| 370 | - if (preg_match('/^([0-9]+)/', $data, $m)) { | |
| 371 | - $result = $m[1]; | |
| 372 | - } | |
| 373 | - } elseif (isset($this->meta['pos'][$index + 1])) { | |
| 374 | - // get chunk of data before next element | |
| 375 | - $pos = max(0, $this->meta['pos'][$index + 1] - 50); | |
| 376 | - $len = min(50, $this->meta['pos'][$index + 1]); | |
| 377 | - $data = substr($this->raw_data, $pos, $len); | |
| 378 | - $data = preg_replace("/$regexp\$/", '', $data); // remove separator | |
| 379 | - | |
| 380 | - if (preg_match('/([0-9]+)$/', $data, $m)) { | |
| 381 | - $result = $m[1]; | |
| 382 | - } | |
| 383 | - } | |
| 384 | - | |
| 385 | - if (isset($result)) { | |
| 386 | - return (int)$result; | |
| 387 | - } | |
| 388 | - } | |
| 389 | - | |
| 390 | - // Finally use less effective method | |
| 391 | - $data = $this->get(); | |
| 392 | - | |
| 393 | - return $data[$index]; | |
| 394 | - } | |
| 395 | - | |
| 396 | - /** | |
| 397 | - * Returns response parameters e.g. MAILBOX, ORDER | |
| 398 | - * | |
| 399 | - * @param string $param Parameter name | |
| 400 | - * | |
| 401 | - * @return array|string Response parameters or parameter value | |
| 402 | - */ | |
| 403 | - public function get_parameters($param = null) | |
| 404 | - { | |
| 405 | - $params = []; | |
| 406 | - $params['MAILBOX'] = $this->mailbox; | |
| 407 | - $params['ORDER'] = $this->order; | |
| 408 | - | |
| 409 | - if ($param !== null) { | |
| 410 | - return $params[$param]; | |
| 411 | - } | |
| 412 | - | |
| 413 | - return $params; | |
| 414 | - } | |
| 415 | - | |
| 416 | - /** | |
| 417 | - * THREAD=REFS sorting implementation (based on provided index) | |
| 418 | - * | |
| 419 | - * @param ResultIndex $index Sorted message identifiers | |
| 420 | - */ | |
| 421 | - public function sort($index) | |
| 422 | - { | |
| 423 | - $this->order = $index->get_parameters('ORDER'); | |
| 424 | - | |
| 425 | - if (empty($this->raw_data)) { | |
| 426 | - return; | |
| 427 | - } | |
| 428 | - | |
| 429 | - // when sorting search result it's good to make the index smaller | |
| 430 | - if ($index->count() != $this->count_messages()) { | |
| 431 | - $index->filter($this->get()); | |
| 432 | - } | |
| 433 | - | |
| 434 | - $result = array_fill_keys($index->get(), null); | |
| 435 | - $datalen = strlen($this->raw_data); | |
| 436 | - $start = 0; | |
| 437 | - | |
| 438 | - // Here we're parsing raw_data twice, we want only one big array | |
| 439 | - // in memory at a time | |
| 440 | - | |
| 441 | - // Assign roots | |
| 442 | - while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) | |
| 443 | - || ($start < $datalen && ($pos = $datalen)) | |
| 444 | - ) { | |
| 445 | - $len = $pos - $start; | |
| 446 | - $elem = substr($this->raw_data, $start, $len); | |
| 447 | - $start = $pos + 1; | |
| 448 | - | |
| 449 | - $items = explode(self::SEPARATOR_ITEM, $elem); | |
| 450 | - $root = (int)array_shift($items); | |
| 451 | - | |
| 452 | - if ($root) { | |
| 453 | - $result[$root] = $root; | |
| 454 | - foreach ($items as $item) { | |
| 455 | - [$lv, $id] = explode(self::SEPARATOR_LEVEL, $item); | |
| 456 | - $result[$id] = $root; | |
| 457 | - } | |
| 458 | - } | |
| 459 | - } | |
| 460 | - | |
| 461 | - // get only unique roots | |
| 462 | - $result = array_filter($result); // make sure there are no nulls | |
| 463 | - $result = array_unique($result); | |
| 464 | - | |
| 465 | - // Re-sort raw data | |
| 466 | - $result = array_fill_keys($result, null); | |
| 467 | - $start = 0; | |
| 468 | - | |
| 469 | - while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) | |
| 470 | - || ($start < $datalen && ($pos = $datalen)) | |
| 471 | - ) { | |
| 472 | - $len = $pos - $start; | |
| 473 | - $elem = substr($this->raw_data, $start, $len); | |
| 474 | - $start = $pos + 1; | |
| 475 | - | |
| 476 | - $npos = strpos($elem, self::SEPARATOR_ITEM); | |
| 477 | - $root = (int)($npos ? substr($elem, 0, $npos) : $elem); | |
| 478 | - | |
| 479 | - $result[$root] = $elem; | |
| 480 | - } | |
| 481 | - | |
| 482 | - $this->raw_data = implode(self::SEPARATOR_ELEMENT, $result); | |
| 483 | - } | |
| 484 | - | |
| 485 | - /** | |
| 486 | - * Returns data as tree | |
| 487 | - * | |
| 488 | - * @return array Data tree | |
| 489 | - */ | |
| 490 | - public function get_tree() | |
| 491 | - { | |
| 492 | - $datalen = strlen($this->raw_data); | |
| 493 | - $result = []; | |
| 494 | - $start = 0; | |
| 495 | - | |
| 496 | - while (($pos = @strpos($this->raw_data, self::SEPARATOR_ELEMENT, $start)) | |
| 497 | - || ($start < $datalen && ($pos = $datalen)) | |
| 498 | - ) { | |
| 499 | - $len = $pos - $start; | |
| 500 | - $elem = substr($this->raw_data, $start, $len); | |
| 501 | - $items = explode(self::SEPARATOR_ITEM, $elem); | |
| 502 | - $result[array_shift($items)] = $this->build_thread($items); | |
| 503 | - $start = $pos + 1; | |
| 504 | - } | |
| 505 | - | |
| 506 | - return $result; | |
| 507 | - } | |
| 508 | - | |
| 509 | - /** | |
| 510 | - * Returns thread depth and children data | |
| 511 | - * | |
| 512 | - * @return array Thread data | |
| 513 | - */ | |
| 514 | - public function get_thread_data() | |
| 515 | - { | |
| 516 | - $data = $this->get_tree(); | |
| 517 | - $depth = []; | |
| 518 | - $children = []; | |
| 519 | - | |
| 520 | - $this->build_thread_data($data, $depth, $children); | |
| 521 | - | |
| 522 | - return [$depth, $children]; | |
| 523 | - } | |
| 524 | - | |
| 525 | - /** | |
| 526 | - * Creates 'depth' and 'children' arrays from stored thread 'tree' data. | |
| 527 | - */ | |
| 528 | - protected function build_thread_data($data, &$depth, &$children, $level = 0) | |
| 529 | - { | |
| 530 | - foreach ((array)$data as $key => $val) { | |
| 531 | - $empty = empty($val) || !is_array($val); | |
| 532 | - $children[$key] = !$empty; | |
| 533 | - $depth[$key] = $level; | |
| 534 | - if (!$empty) { | |
| 535 | - $this->build_thread_data($val, $depth, $children, $level + 1); | |
| 536 | - } | |
| 537 | - } | |
| 538 | - } | |
| 539 | - | |
| 540 | - /** | |
| 541 | - * Converts part of the raw thread into an array | |
| 542 | - */ | |
| 543 | - protected function build_thread($items, $level = 1, &$pos = 0) | |
| 544 | - { | |
| 545 | - $result = []; | |
| 546 | - | |
| 547 | - for ($len = count($items) ; $pos < $len ; $pos++) { | |
| 548 | - [$lv, $id] = explode(self::SEPARATOR_LEVEL, $items[$pos]); | |
| 549 | - if ($level == $lv) { | |
| 550 | - $pos++; | |
| 551 | - $result[$id] = $this->build_thread($items, $level + 1, $pos); | |
| 552 | - } else { | |
| 553 | - $pos--; | |
| 554 | - break; | |
| 555 | - } | |
| 556 | - } | |
| 557 | - | |
| 558 | - return $result; | |
| 559 | - } | |
| 560 | - | |
| 561 | - /** | |
| 562 | - * IMAP THREAD response parser | |
| 563 | - */ | |
| 564 | - protected function parse_thread($str, $begin = 0, $end = 0, $depth = 0) | |
| 565 | - { | |
| 566 | - // Don't be tempted to change $str to pass by reference to speed this up - it will slow it down by about | |
| 567 | - // 7 times instead :-) See comments on http://uk2.php.net/references and this article: | |
| 568 | - // http://derickrethans.nl/files/phparch-php-variables-article.pdf | |
| 569 | - $node = ''; | |
| 570 | - if (!$end) { | |
| 571 | - $end = strlen($str); | |
| 572 | - } | |
| 573 | - | |
| 574 | - // Let's try to store data in max. compacted stracture as a string, | |
| 575 | - // arrays handling is much more expensive | |
| 576 | - // For the following structure: THREAD (2)(3 6 (4 23)(44 7 96)) | |
| 577 | - // -- 2 | |
| 578 | - // -- 3 | |
| 579 | - // \-- 6 | |
| 580 | - // |-- 4 | |
| 581 | - // | \-- 23 | |
| 582 | - // | | |
| 583 | - // \-- 44 | |
| 584 | - // \-- 7 | |
| 585 | - // \-- 96 | |
| 586 | - // | |
| 587 | - // The output will be: 2,3^1:6^2:4^3:23^2:44^3:7^4:96 | |
| 588 | - | |
| 589 | - if ($str[$begin] != '(') { | |
| 590 | - // find next bracket | |
| 591 | - $stop = $begin + strcspn($str, '()', $begin, $end - $begin); | |
| 592 | - $messages = explode(' ', trim(substr($str, $begin, $stop - $begin))); | |
| 593 | - | |
| 594 | - if (empty($messages)) { | |
| 595 | - return $node; | |
| 596 | - } | |
| 597 | - | |
| 598 | - foreach ($messages as $msg) { | |
| 599 | - if ($msg) { | |
| 600 | - $node .= ($depth ? self::SEPARATOR_ITEM.$depth.self::SEPARATOR_LEVEL : '').$msg; | |
| 601 | - $this->meta['messages']++; | |
| 602 | - $depth++; | |
| 603 | - } | |
| 604 | - } | |
| 605 | - | |
| 606 | - if ($stop < $end) { | |
| 607 | - $node .= $this->parse_thread($str, $stop, $end, $depth); | |
| 608 | - } | |
| 609 | - } else { | |
| 610 | - $off = $begin; | |
| 611 | - while ($off < $end) { | |
| 612 | - $start = $off; | |
| 613 | - $off++; | |
| 614 | - $n = 1; | |
| 615 | - while ($n > 0) { | |
| 616 | - $p = strpos($str, ')', $off); | |
| 617 | - if ($p === false) { | |
| 618 | - // error, wrong structure, mismatched brackets in IMAP THREAD response | |
| 619 | - // @TODO: write error to the log or maybe set $this->raw_data = null; | |
| 620 | - return $node; | |
| 621 | - } | |
| 622 | - $p1 = strpos($str, '(', $off); | |
| 623 | - if ($p1 !== false && $p1 < $p) { | |
| 624 | - $off = $p1 + 1; | |
| 625 | - $n++; | |
| 626 | - } else { | |
| 627 | - $off = $p + 1; | |
| 628 | - $n--; | |
| 629 | - } | |
| 630 | - } | |
| 631 | - | |
| 632 | - $thread = $this->parse_thread($str, $start + 1, $off - 1, $depth); | |
| 633 | - if ($thread) { | |
| 634 | - if (!$depth) { | |
| 635 | - if ($node) { | |
| 636 | - $node .= self::SEPARATOR_ELEMENT; | |
| 637 | - } | |
| 638 | - } | |
| 639 | - $node .= $thread; | |
| 640 | - } | |
| 641 | - } | |
| 642 | - } | |
| 643 | - | |
| 644 | - return $node; | |
| 645 | - } | |
| 646 | -} | |
