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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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1 <?php 2 3 // SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue 4 // SPDX-License-Identifier: BSD-3-Clause 5 6 declare(strict_types=1); 7 8 namespace SimplePie; 9 10 use SimplePie\XML\Declaration\Parser as DeclarationParser; 11 use XMLParser; 12 13 /** 14 * Parses XML into something sane 15 * 16 * 17 * This class can be overloaded with {@see \SimplePie\SimplePie::set_parser_class()} 18 */ 19 class Parser implements RegistryAware 20 { 21 /** @var int */ 22 public $error_code; 23 /** @var string */ 24 public $error_string; 25 /** @var int */ 26 public $current_line; 27 /** @var int */ 28 public $current_column; 29 /** @var int */ 30 public $current_byte; 31 /** @var string */ 32 public $separator = ' '; 33 /** @var string[] */ 34 public $namespace = ['']; 35 /** @var string[] */ 36 public $element = ['']; 37 /** @var string[] */ 38 public $xml_base = ['']; 39 /** @var bool[] */ 40 public $xml_base_explicit = [false]; 41 /** @var string[] */ 42 public $xml_lang = ['']; 43 /** @var array<string, mixed> */ 44 public $data = []; 45 /** @var array<array<string, mixed>> */ 46 public $datas = [[]]; 47 /** @var int */ 48 public $current_xhtml_construct = -1; 49 /** @var string */ 50 public $encoding; 51 /** @var Registry */ 52 protected $registry; 53 54 /** 55 * @return void 56 */ 57 public function set_registry(\SimplePie\Registry $registry) 58 { 59 $this->registry = $registry; 60 } 61 62 /** 63 * @return bool 64 */ 65 public function parse(string &$data, string $encoding, string $url = '') 66 { 67 if (class_exists('DOMXpath') && function_exists('Mf2\parse')) { 68 $doc = new \DOMDocument(); 69 @$doc->loadHTML($data); 70 $xpath = new \DOMXpath($doc); 71 // Check for both h-feed and h-entry, as both a feed with no entries 72 // and a list of entries without an h-feed wrapper are both valid. 73 $query = '//*[contains(concat(" ", @class, " "), " h-feed ") or '. 74 'contains(concat(" ", @class, " "), " h-entry ")]'; 75 /** @var \DOMNodeList<\DOMElement> $result */ 76 $result = $xpath->query($query); 77 if ($result->length !== 0) { 78 return $this->parse_microformats($data, $url); 79 } 80 } 81 82 // Use UTF-8 if we get passed US-ASCII, as every US-ASCII character is a UTF-8 character 83 if (strtoupper($encoding) === 'US-ASCII') { 84 $this->encoding = 'UTF-8'; 85 } else { 86 $this->encoding = $encoding; 87 } 88 89 // Strip BOM: 90 // UTF-32 Big Endian BOM 91 if (substr($data, 0, 4) === "\x00\x00\xFE\xFF") { 92 $data = substr($data, 4); 93 } 94 // UTF-32 Little Endian BOM 95 elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00") { 96 $data = substr($data, 4); 97 } 98 // UTF-16 Big Endian BOM 99 elseif (substr($data, 0, 2) === "\xFE\xFF") { 100 $data = substr($data, 2); 101 } 102 // UTF-16 Little Endian BOM 103 elseif (substr($data, 0, 2) === "\xFF\xFE") { 104 $data = substr($data, 2); 105 } 106 // UTF-8 BOM 107 elseif (substr($data, 0, 3) === "\xEF\xBB\xBF") { 108 $data = substr($data, 3); 109 } 110 111 if (substr($data, 0, 5) === '<?xml' && strspn(substr($data, 5, 1), "\x09\x0A\x0D\x20") && ($pos = strpos($data, '?>')) !== false) { 112 $declaration = $this->registry->create(DeclarationParser::class, [substr($data, 5, $pos - 5)]); 113 if ($declaration->parse()) { 114 $data = substr($data, $pos + 2); 115 $data = '<?xml version="' . $declaration->version . '" encoding="' . $encoding . '" standalone="' . (($declaration->standalone) ? 'yes' : 'no') . '"?>' . "\n" . 116 self::set_doctype($data); 117 } else { 118 $this->error_string = 'SimplePie bug! Please report this!'; 119 return false; 120 } 121 } else { 122 $data = self::set_doctype($data); 123 } 124 125 $return = true; 126 127 static $xml_is_sane = null; 128 if ($xml_is_sane === null) { 129 $parser_check = xml_parser_create(); 130 xml_parse_into_struct($parser_check, '<foo>&</foo>', $values); 131 if (\PHP_VERSION_ID < 80000) { 132 xml_parser_free($parser_check); 133 } 134 $xml_is_sane = isset($values[0]['value']); 135 } 136 137 // Create the parser 138 if ($xml_is_sane) { 139 $xml = xml_parser_create_ns($this->encoding, $this->separator); 140 xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1); 141 xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0); 142 xml_set_character_data_handler($xml, [$this, 'cdata']); 143 xml_set_element_handler($xml, [$this, 'tag_open'], [$this, 'tag_close']); 144 145 // Parse! 146 $wrapper = @is_writable(sys_get_temp_dir()) ? 'php://temp' : 'php://memory'; 147 if (($stream = fopen($wrapper, 'r+')) && 148 fwrite($stream, $data) && 149 rewind($stream)) { 150 //Parse by chunks not to use too much memory 151 do { 152 $stream_data = (string) fread($stream, 1048576); 153 154 if (!xml_parse($xml, $stream_data, feof($stream))) { 155 $this->error_code = xml_get_error_code($xml); 156 $this->error_string = xml_error_string($this->error_code) ?: "Unknown"; 157 $return = false; 158 break; 159 } 160 } while (!feof($stream)); 161 fclose($stream); 162 } else { 163 $return = false; 164 } 165 166 $this->current_line = xml_get_current_line_number($xml); 167 $this->current_column = xml_get_current_column_number($xml); 168 $this->current_byte = xml_get_current_byte_index($xml); 169 if (\PHP_VERSION_ID < 80000) { 170 xml_parser_free($xml); 171 } 172 return $return; 173 } 174 175 libxml_clear_errors(); 176 $xml = new \XMLReader(); 177 $xml->xml($data); 178 while (@$xml->read()) { 179 switch ($xml->nodeType) { 180 case \XMLReader::END_ELEMENT: 181 if ($xml->namespaceURI !== '') { 182 $tagName = $xml->namespaceURI . $this->separator . $xml->localName; 183 } else { 184 $tagName = $xml->localName; 185 } 186 $this->tag_close(null, $tagName); 187 break; 188 case \XMLReader::ELEMENT: 189 $empty = $xml->isEmptyElement; 190 if ($xml->namespaceURI !== '') { 191 $tagName = $xml->namespaceURI . $this->separator . $xml->localName; 192 } else { 193 $tagName = $xml->localName; 194 } 195 $attributes = []; 196 while ($xml->moveToNextAttribute()) { 197 if ($xml->namespaceURI !== '') { 198 $attrName = $xml->namespaceURI . $this->separator . $xml->localName; 199 } else { 200 $attrName = $xml->localName; 201 } 202 $attributes[$attrName] = $xml->value; 203 } 204 $this->tag_open(null, $tagName, $attributes); 205 if ($empty) { 206 $this->tag_close(null, $tagName); 207 } 208 break; 209 case \XMLReader::TEXT: 210 211 case \XMLReader::CDATA: 212 $this->cdata(null, $xml->value); 213 break; 214 } 215 } 216 if ($error = libxml_get_last_error()) { 217 $this->error_code = $error->code; 218 $this->error_string = $error->message; 219 $this->current_line = $error->line; 220 $this->current_column = $error->column; 221 return false; 222 } 223 224 return true; 225 } 226 227 /** 228 * @return int 229 */ 230 public function get_error_code() 231 { 232 return $this->error_code; 233 } 234 235 /** 236 * @return string 237 */ 238 public function get_error_string() 239 { 240 return $this->error_string; 241 } 242 243 /** 244 * @return int 245 */ 246 public function get_current_line() 247 { 248 return $this->current_line; 249 } 250 251 /** 252 * @return int 253 */ 254 public function get_current_column() 255 { 256 return $this->current_column; 257 } 258 259 /** 260 * @return int 261 */ 262 public function get_current_byte() 263 { 264 return $this->current_byte; 265 } 266 267 /** 268 * @return array<string, mixed> 269 */ 270 public function get_data() 271 { 272 return $this->data; 273 } 274 275 /** 276 * @param XMLParser|resource|null $parser 277 * @param array<string, string> $attributes 278 * @return void 279 */ 280 public function tag_open($parser, string $tag, array $attributes) 281 { 282 [$this->namespace[], $this->element[]] = $this->split_ns($tag); 283 284 $attribs = []; 285 foreach ($attributes as $name => $value) { 286 [$attrib_namespace, $attribute] = $this->split_ns($name); 287 $attribs[$attrib_namespace][$attribute] = $value; 288 } 289 290 if (isset($attribs[\SimplePie\SimplePie::NAMESPACE_XML]['base'])) { 291 $base = $this->registry->call(Misc::class, 'absolutize_url', [$attribs[\SimplePie\SimplePie::NAMESPACE_XML]['base'], end($this->xml_base)]); 292 if ($base !== false) { 293 $this->xml_base[] = $base; 294 $this->xml_base_explicit[] = true; 295 } 296 } else { 297 $this->xml_base[] = end($this->xml_base) ?: ''; 298 $this->xml_base_explicit[] = end($this->xml_base_explicit); 299 } 300 301 if (isset($attribs[\SimplePie\SimplePie::NAMESPACE_XML]['lang'])) { 302 $this->xml_lang[] = $attribs[\SimplePie\SimplePie::NAMESPACE_XML]['lang']; 303 } else { 304 $this->xml_lang[] = end($this->xml_lang) ?: ''; 305 } 306 307 if ($this->current_xhtml_construct >= 0) { 308 $this->current_xhtml_construct++; 309 if (end($this->namespace) === \SimplePie\SimplePie::NAMESPACE_XHTML) { 310 $this->data['data'] .= '<' . end($this->element); 311 if (isset($attribs[''])) { 312 foreach ($attribs[''] as $name => $value) { 313 $this->data['data'] .= ' ' . $name . '="' . htmlspecialchars($value, ENT_COMPAT, $this->encoding) . '"'; 314 } 315 } 316 $this->data['data'] .= '>'; 317 } 318 } else { 319 $this->datas[] = &$this->data; 320 $this->data = &$this->data['child'][end($this->namespace)][end($this->element)][]; 321 $this->data = ['data' => '', 'attribs' => $attribs, 'xml_base' => end($this->xml_base), 'xml_base_explicit' => end($this->xml_base_explicit), 'xml_lang' => end($this->xml_lang)]; 322 if ((end($this->namespace) === \SimplePie\SimplePie::NAMESPACE_ATOM_03 && in_array(end($this->element), ['title', 'tagline', 'copyright', 'info', 'summary', 'content']) && isset($attribs['']['mode']) && $attribs['']['mode'] === 'xml') 323 || (end($this->namespace) === \SimplePie\SimplePie::NAMESPACE_ATOM_10 && in_array(end($this->element), ['rights', 'subtitle', 'summary', 'info', 'title', 'content']) && isset($attribs['']['type']) && $attribs['']['type'] === 'xhtml') 324 || (end($this->namespace) === \SimplePie\SimplePie::NAMESPACE_RSS_20 && in_array(end($this->element), ['title'])) 325 || (end($this->namespace) === \SimplePie\SimplePie::NAMESPACE_RSS_090 && in_array(end($this->element), ['title'])) 326 || (end($this->namespace) === \SimplePie\SimplePie::NAMESPACE_RSS_10 && in_array(end($this->element), ['title']))) { 327 $this->current_xhtml_construct = 0; 328 } 329 } 330 } 331 332 /** 333 * @param XMLParser|resource|null $parser 334 * @return void 335 */ 336 public function cdata($parser, string $cdata) 337 { 338 if ($this->current_xhtml_construct >= 0) { 339 $this->data['data'] .= htmlspecialchars($cdata, ENT_QUOTES, $this->encoding); 340 } else { 341 $this->data['data'] .= $cdata; 342 } 343 } 344 345 /** 346 * @param XMLParser|resource|null $parser 347 * @return void 348 */ 349 public function tag_close($parser, string $tag) 350 { 351 if ($this->current_xhtml_construct >= 0) { 352 $this->current_xhtml_construct--; 353 if (end($this->namespace) === \SimplePie\SimplePie::NAMESPACE_XHTML && !in_array(end($this->element), ['area', 'base', 'basefont', 'br', 'col', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param'])) { 354 $this->data['data'] .= '</' . end($this->element) . '>'; 355 } 356 } 357 if ($this->current_xhtml_construct === -1) { 358 $this->data = &$this->datas[count($this->datas) - 1]; 359 array_pop($this->datas); 360 } 361 362 array_pop($this->element); 363 array_pop($this->namespace); 364 array_pop($this->xml_base); 365 array_pop($this->xml_base_explicit); 366 array_pop($this->xml_lang); 367 } 368 369 /** 370 * @return array{string, string} 371 */ 372 public function split_ns(string $string) 373 { 374 static $cache = []; 375 if (!isset($cache[$string])) { 376 if ($pos = strpos($string, $this->separator)) { 377 static $separator_length; 378 if (!$separator_length) { 379 $separator_length = strlen($this->separator); 380 } 381 $namespace = substr($string, 0, $pos); 382 $local_name = substr($string, $pos + $separator_length); 383 if (strtolower($namespace) === \SimplePie\SimplePie::NAMESPACE_ITUNES) { 384 $namespace = \SimplePie\SimplePie::NAMESPACE_ITUNES; 385 } 386 387 // Normalize the Media RSS namespaces 388 if ($namespace === \SimplePie\SimplePie::NAMESPACE_MEDIARSS_WRONG || 389 $namespace === \SimplePie\SimplePie::NAMESPACE_MEDIARSS_WRONG2 || 390 $namespace === \SimplePie\SimplePie::NAMESPACE_MEDIARSS_WRONG3 || 391 $namespace === \SimplePie\SimplePie::NAMESPACE_MEDIARSS_WRONG4 || 392 $namespace === \SimplePie\SimplePie::NAMESPACE_MEDIARSS_WRONG5) { 393 $namespace = \SimplePie\SimplePie::NAMESPACE_MEDIARSS; 394 } 395 $cache[$string] = [$namespace, $local_name]; 396 } else { 397 $cache[$string] = ['', $string]; 398 } 399 } 400 return $cache[$string]; 401 } 402 403 /** 404 * @param array<string, mixed> $data 405 */ 406 private function parse_hcard(array $data, bool $category = false): string 407 { 408 $name = ''; 409 $link = ''; 410 // Check if h-card is set and pass that information on in the link. 411 if (isset($data['type']) && in_array('h-card', $data['type'])) { 412 if (isset($data['properties']['name'][0])) { 413 $name = $data['properties']['name'][0]; 414 } 415 if (isset($data['properties']['url'][0])) { 416 $link = $data['properties']['url'][0]; 417 if ($name === '') { 418 $name = $link; 419 } else { 420 // can't have commas in categories. 421 $name = str_replace(',', '', $name); 422 } 423 $person_tag = $category ? '<span class="person-tag"></span>' : ''; 424 return '<a class="h-card" href="'.$link.'">'.$person_tag.$name.'</a>'; 425 } 426 } 427 return $data['value'] ?? ''; 428 } 429 430 /** 431 * @return true 432 */ 433 private function parse_microformats(string &$data, string $url): bool 434 { 435 // For PHPStan, we already check that in call site. 436 \assert(function_exists('Mf2\parse')); 437 \assert(function_exists('Mf2\fetch')); 438 $feed_title = ''; 439 $feed_author = null; 440 $author_cache = []; 441 $items = []; 442 $entries = []; 443 $mf = \Mf2\parse($data, $url); 444 // First look for an h-feed. 445 $h_feed = []; 446 foreach ($mf['items'] as $mf_item) { 447 if (in_array('h-feed', $mf_item['type'])) { 448 $h_feed = $mf_item; 449 break; 450 } 451 // Also look for h-feed or h-entry in the children of each top level item. 452 if (!isset($mf_item['children'][0]['type'])) { 453 continue; 454 } 455 if (in_array('h-feed', $mf_item['children'][0]['type'])) { 456 $h_feed = $mf_item['children'][0]; 457 // In this case the parent of the h-feed may be an h-card, so use it as 458 // the feed_author. 459 if (in_array('h-card', $mf_item['type'])) { 460 $feed_author = $mf_item; 461 } 462 break; 463 } elseif (in_array('h-entry', $mf_item['children'][0]['type'])) { 464 $entries = $mf_item['children']; 465 // In this case the parent of the h-entry list may be an h-card, so use 466 // it as the feed_author. 467 if (in_array('h-card', $mf_item['type'])) { 468 $feed_author = $mf_item; 469 } 470 break; 471 } 472 } 473 if (isset($h_feed['children'])) { 474 $entries = $h_feed['children']; 475 // Also set the feed title and store author from the h-feed if available. 476 if (isset($mf['items'][0]['properties']['name'][0])) { 477 $feed_title = $mf['items'][0]['properties']['name'][0]; 478 } 479 if (isset($mf['items'][0]['properties']['author'][0])) { 480 $feed_author = $mf['items'][0]['properties']['author'][0]; 481 } 482 } elseif (count($entries) === 0) { 483 $entries = $mf['items']; 484 } 485 for ($i = 0; $i < count($entries); $i++) { 486 $entry = $entries[$i]; 487 if (in_array('h-entry', $entry['type'])) { 488 $item = []; 489 $title = ''; 490 $description = ''; 491 if (isset($entry['properties']['url'][0])) { 492 $link = $entry['properties']['url'][0]; 493 if (isset($link['value'])) { 494 $link = $link['value']; 495 } 496 $item['link'] = [['data' => $link]]; 497 } 498 if (isset($entry['properties']['uid'][0])) { 499 $guid = $entry['properties']['uid'][0]; 500 if (isset($guid['value'])) { 501 $guid = $guid['value']; 502 } 503 $item['guid'] = [['data' => $guid]]; 504 } 505 if (isset($entry['properties']['name'][0])) { 506 $title = $entry['properties']['name'][0]; 507 if (isset($title['value'])) { 508 $title = $title['value']; 509 } 510 $item['title'] = [['data' => $title]]; 511 } 512 if (isset($entry['properties']['author'][0]) || isset($feed_author)) { 513 // author is a special case, it can be plain text or an h-card array. 514 // If it's plain text it can also be a url that should be followed to 515 // get the actual h-card. 516 $author = $entry['properties']['author'][0] ?? $feed_author; 517 if (!is_string($author)) { 518 $author = $this->parse_hcard($author); 519 } elseif (strpos($author, 'http') === 0) { 520 if (isset($author_cache[$author])) { 521 $author = $author_cache[$author]; 522 } else { 523 if ($mf = \Mf2\fetch($author)) { 524 foreach ($mf['items'] as $hcard) { 525 // Only interested in an h-card by itself in this case. 526 if (!in_array('h-card', $hcard['type'])) { 527 continue; 528 } 529 // It must have a url property matching what we fetched. 530 if (!isset($hcard['properties']['url']) || 531 !(in_array($author, $hcard['properties']['url']))) { 532 continue; 533 } 534 // Save parse_hcard the trouble of finding the correct url. 535 $hcard['properties']['url'][0] = $author; 536 // Cache this h-card for the next h-entry to check. 537 $author_cache[$author] = $this->parse_hcard($hcard); 538 $author = $author_cache[$author]; 539 break; 540 } 541 } 542 } 543 } 544 $item['author'] = [['data' => $author]]; 545 } 546 if (isset($entry['properties']['photo'][0])) { 547 // If a photo is also in content, don't need to add it again here. 548 $content = ''; 549 if (isset($entry['properties']['content'][0]['html'])) { 550 $content = $entry['properties']['content'][0]['html']; 551 } 552 $photo_list = []; 553 for ($j = 0; $j < count($entry['properties']['photo']); $j++) { 554 $photo = $entry['properties']['photo'][$j]; 555 if (!empty($photo) && strpos($content, $photo) === false) { 556 $photo_list[] = $photo; 557 } 558 } 559 // When there's more than one photo show the first and use a lightbox. 560 // Need a permanent, unique name for the image set, but don't have 561 // anything unique except for the content itself, so use that. 562 $count = count($photo_list); 563 if ($count > 1) { 564 $image_set_id = preg_replace('/[[:^alnum:]]/', '', $photo_list[0]); 565 $description = '<p>'; 566 for ($j = 0; $j < $count; $j++) { 567 $hidden = $j === 0 ? '' : 'class="hidden" '; 568 $description .= '<a href="'.$photo_list[$j].'" '.$hidden. 569 'data-lightbox="image-set-'.$image_set_id.'">'. 570 '<img src="'.$photo_list[$j].'"></a>'; 571 } 572 $description .= '<br><b>'.$count.' photos</b></p>'; 573 } elseif ($count == 1) { 574 $description = '<p><img src="'.$photo_list[0].'"></p>'; 575 } 576 } 577 if (isset($entry['properties']['content'][0]['html'])) { 578 // e-content['value'] is the same as p-name when they are on the same 579 // element. Use this to replace title with a strip_tags version so 580 // that alt text from images is not included in the title. 581 if ($entry['properties']['content'][0]['value'] === $title) { 582 $title = strip_tags($entry['properties']['content'][0]['html']); 583 $item['title'] = [['data' => $title]]; 584 } 585 $description .= $entry['properties']['content'][0]['html']; 586 if (isset($entry['properties']['in-reply-to'][0])) { 587 $in_reply_to = ''; 588 if (is_string($entry['properties']['in-reply-to'][0])) { 589 $in_reply_to = $entry['properties']['in-reply-to'][0]; 590 } elseif (isset($entry['properties']['in-reply-to'][0]['value'])) { 591 $in_reply_to = $entry['properties']['in-reply-to'][0]['value']; 592 } 593 if ($in_reply_to !== '') { 594 $description .= '<p><span class="in-reply-to"></span> '. 595 '<a href="'.$in_reply_to.'">'.$in_reply_to.'</a><p>'; 596 } 597 } 598 $item['description'] = [['data' => $description]]; 599 } 600 if (isset($entry['properties']['category'])) { 601 $category_csv = ''; 602 // Categories can also contain h-cards. 603 foreach ($entry['properties']['category'] as $category) { 604 if ($category_csv !== '') { 605 $category_csv .= ', '; 606 } 607 if (is_string($category)) { 608 // Can't have commas in categories. 609 $category_csv .= str_replace(',', '', $category); 610 } else { 611 $category_csv .= $this->parse_hcard($category, true); 612 } 613 } 614 $item['category'] = [['data' => $category_csv]]; 615 } 616 if (isset($entry['properties']['published'][0])) { 617 $timestamp = strtotime($entry['properties']['published'][0]); 618 $pub_date = date('F j Y g:ia', $timestamp).' GMT'; 619 $item['pubDate'] = [['data' => $pub_date]]; 620 } 621 // The title and description are set to the empty string to represent 622 // a deleted item (which also makes it an invalid rss item). 623 if (isset($entry['properties']['deleted'][0])) { 624 $item['title'] = [['data' => '']]; 625 $item['description'] = [['data' => '']]; 626 } 627 $items[] = ['child' => ['' => $item]]; 628 } 629 } 630 // Mimic RSS data format when storing microformats. 631 $link = [['data' => $url]]; 632 $image = ''; 633 if (!is_string($feed_author) && 634 isset($feed_author['properties']['photo'][0])) { 635 $image = [['child' => ['' => ['url' => 636 [['data' => $feed_author['properties']['photo'][0]]]]]]]; 637 } 638 // Use the name given for the h-feed, or get the title from the html. 639 if ($feed_title !== '') { 640 $feed_title = [['data' => htmlspecialchars($feed_title)]]; 641 } elseif ($position = strpos($data, '<title>')) { 642 $start = $position < 200 ? 0 : $position - 200; 643 $check = substr($data, $start, 400); 644 $matches = []; 645 if (preg_match('/<title>(.+)<\/title>/', $check, $matches)) { 646 $feed_title = [['data' => htmlspecialchars($matches[1])]]; 647 } 648 } 649 $channel = ['channel' => [['child' => ['' => 650 ['link' => $link, 'image' => $image, 'title' => $feed_title, 651 'item' => $items]]]]]; 652 $rss = [['attribs' => ['' => ['version' => '2.0']], 653 'child' => ['' => $channel]]]; 654 $this->data = ['child' => ['' => ['rss' => $rss]]]; 655 return true; 656 } 657 658 private static function set_doctype(string $data): string 659 { 660 // Strip DOCTYPE except if containing an [internal subset] 661 $data = preg_replace('/^\\s*<!DOCTYPE\\s[^>\\[\\]]*>\s*/', '', $data) ?? $data; 662 // Declare HTML entities only if no remaining DOCTYPE 663 $doctype = preg_match('/^\\s*<!DOCTYPE\\s/', $data) ? '' : self::declare_html_entities(); 664 return $doctype . $data; 665 } 666 667 private static function declare_html_entities(): string 668 { 669 // This is required because the RSS specification says that entity-encoded 670 // html is allowed, but the xml specification says they must be declared. 671 return '<!DOCTYPE rss [ <!ENTITY nbsp " "> <!ENTITY iexcl "¡"> <!ENTITY cent "¢"> <!ENTITY pound "£"> <!ENTITY curren "¤"> <!ENTITY yen "¥"> <!ENTITY brvbar "¦"> <!ENTITY sect "§"> <!ENTITY uml "¨"> <!ENTITY copy "©"> <!ENTITY ordf "ª"> <!ENTITY laquo "«"> <!ENTITY not "¬"> <!ENTITY shy "­"> <!ENTITY reg "®"> <!ENTITY macr "¯"> <!ENTITY deg "°"> <!ENTITY plusmn "±"> <!ENTITY sup2 "²"> <!ENTITY sup3 "³"> <!ENTITY acute "´"> <!ENTITY micro "µ"> <!ENTITY para "¶"> <!ENTITY middot "·"> <!ENTITY cedil "¸"> <!ENTITY sup1 "¹"> <!ENTITY ordm "º"> <!ENTITY raquo "»"> <!ENTITY frac14 "¼"> <!ENTITY frac12 "½"> <!ENTITY frac34 "¾"> <!ENTITY iquest "¿"> <!ENTITY Agrave "À"> <!ENTITY Aacute "Á"> <!ENTITY Acirc "Â"> <!ENTITY Atilde "Ã"> <!ENTITY Auml "Ä"> <!ENTITY Aring "Å"> <!ENTITY AElig "Æ"> <!ENTITY Ccedil "Ç"> <!ENTITY Egrave "È"> <!ENTITY Eacute "É"> <!ENTITY Ecirc "Ê"> <!ENTITY Euml "Ë"> <!ENTITY Igrave "Ì"> <!ENTITY Iacute "Í"> <!ENTITY Icirc "Î"> <!ENTITY Iuml "Ï"> <!ENTITY ETH "Ð"> <!ENTITY Ntilde "Ñ"> <!ENTITY Ograve "Ò"> <!ENTITY Oacute "Ó"> <!ENTITY Ocirc "Ô"> <!ENTITY Otilde "Õ"> <!ENTITY Ouml "Ö"> <!ENTITY times "×"> <!ENTITY Oslash "Ø"> <!ENTITY Ugrave "Ù"> <!ENTITY Uacute "Ú"> <!ENTITY Ucirc "Û"> <!ENTITY Uuml "Ü"> <!ENTITY Yacute "Ý"> <!ENTITY THORN "Þ"> <!ENTITY szlig "ß"> <!ENTITY agrave "à"> <!ENTITY aacute "á"> <!ENTITY acirc "â"> <!ENTITY atilde "ã"> <!ENTITY auml "ä"> <!ENTITY aring "å"> <!ENTITY aelig "æ"> <!ENTITY ccedil "ç"> <!ENTITY egrave "è"> <!ENTITY eacute "é"> <!ENTITY ecirc "ê"> <!ENTITY euml "ë"> <!ENTITY igrave "ì"> <!ENTITY iacute "í"> <!ENTITY icirc "î"> <!ENTITY iuml "ï"> <!ENTITY eth "ð"> <!ENTITY ntilde "ñ"> <!ENTITY ograve "ò"> <!ENTITY oacute "ó"> <!ENTITY ocirc "ô"> <!ENTITY otilde "õ"> <!ENTITY ouml "ö"> <!ENTITY divide "÷"> <!ENTITY oslash "ø"> <!ENTITY ugrave "ù"> <!ENTITY uacute "ú"> <!ENTITY ucirc "û"> <!ENTITY uuml "ü"> <!ENTITY yacute "ý"> <!ENTITY thorn "þ"> <!ENTITY yuml "ÿ"> <!ENTITY OElig "Œ"> <!ENTITY oelig "œ"> <!ENTITY Scaron "Š"> <!ENTITY scaron "š"> <!ENTITY Yuml "Ÿ"> <!ENTITY fnof "ƒ"> <!ENTITY circ "ˆ"> <!ENTITY tilde "˜"> <!ENTITY Alpha "Α"> <!ENTITY Beta "Β"> <!ENTITY Gamma "Γ"> <!ENTITY Epsilon "Ε"> <!ENTITY Zeta "Ζ"> <!ENTITY Eta "Η"> <!ENTITY Theta "Θ"> <!ENTITY Iota "Ι"> <!ENTITY Kappa "Κ"> <!ENTITY Lambda "Λ"> <!ENTITY Mu "Μ"> <!ENTITY Nu "Ν"> <!ENTITY Xi "Ξ"> <!ENTITY Omicron "Ο"> <!ENTITY Pi "Π"> <!ENTITY Rho "Ρ"> <!ENTITY Sigma "Σ"> <!ENTITY Tau "Τ"> <!ENTITY Upsilon "Υ"> <!ENTITY Phi "Φ"> <!ENTITY Chi "Χ"> <!ENTITY Psi "Ψ"> <!ENTITY Omega "Ω"> <!ENTITY alpha "α"> <!ENTITY beta "β"> <!ENTITY gamma "γ"> <!ENTITY delta "δ"> <!ENTITY epsilon "ε"> <!ENTITY zeta "ζ"> <!ENTITY eta "η"> <!ENTITY theta "θ"> <!ENTITY iota "ι"> <!ENTITY kappa "κ"> <!ENTITY lambda "λ"> <!ENTITY mu "μ"> <!ENTITY nu "ν"> <!ENTITY xi "ξ"> <!ENTITY omicron "ο"> <!ENTITY pi "π"> <!ENTITY rho "ρ"> <!ENTITY sigmaf "ς"> <!ENTITY sigma "σ"> <!ENTITY tau "τ"> <!ENTITY upsilon "υ"> <!ENTITY phi "φ"> <!ENTITY chi "χ"> <!ENTITY psi "ψ"> <!ENTITY omega "ω"> <!ENTITY thetasym "ϑ"> <!ENTITY upsih "ϒ"> <!ENTITY piv "ϖ"> <!ENTITY ensp " "> <!ENTITY emsp " "> <!ENTITY thinsp " "> <!ENTITY zwnj "‌"> <!ENTITY zwj "‍"> <!ENTITY lrm "‎"> <!ENTITY rlm "‏"> <!ENTITY ndash "–"> <!ENTITY mdash "—"> <!ENTITY lsquo "‘"> <!ENTITY rsquo "’"> <!ENTITY sbquo "‚"> <!ENTITY ldquo "“"> <!ENTITY rdquo "”"> <!ENTITY bdquo "„"> <!ENTITY dagger "†"> <!ENTITY Dagger "‡"> <!ENTITY bull "•"> <!ENTITY hellip "…"> <!ENTITY permil "‰"> <!ENTITY prime "′"> <!ENTITY Prime "″"> <!ENTITY lsaquo "‹"> <!ENTITY rsaquo "›"> <!ENTITY oline "‾"> <!ENTITY frasl "⁄"> <!ENTITY euro "€"> <!ENTITY image "ℑ"> <!ENTITY weierp "℘"> <!ENTITY real "ℜ"> <!ENTITY trade "™"> <!ENTITY alefsym "ℵ"> <!ENTITY larr "←"> <!ENTITY uarr "↑"> <!ENTITY rarr "→"> <!ENTITY darr "↓"> <!ENTITY harr "↔"> <!ENTITY crarr "↵"> <!ENTITY lArr "⇐"> <!ENTITY uArr "⇑"> <!ENTITY rArr "⇒"> <!ENTITY dArr "⇓"> <!ENTITY hArr "⇔"> <!ENTITY forall "∀"> <!ENTITY part "∂"> <!ENTITY exist "∃"> <!ENTITY empty "∅"> <!ENTITY nabla "∇"> <!ENTITY isin "∈"> <!ENTITY notin "∉"> <!ENTITY ni "∋"> <!ENTITY prod "∏"> <!ENTITY sum "∑"> <!ENTITY minus "−"> <!ENTITY lowast "∗"> <!ENTITY radic "√"> <!ENTITY prop "∝"> <!ENTITY infin "∞"> <!ENTITY ang "∠"> <!ENTITY and "∧"> <!ENTITY or "∨"> <!ENTITY cap "∩"> <!ENTITY cup "∪"> <!ENTITY int "∫"> <!ENTITY there4 "∴"> <!ENTITY sim "∼"> <!ENTITY cong "≅"> <!ENTITY asymp "≈"> <!ENTITY ne "≠"> <!ENTITY equiv "≡"> <!ENTITY le "≤"> <!ENTITY ge "≥"> <!ENTITY sub "⊂"> <!ENTITY sup "⊃"> <!ENTITY nsub "⊄"> <!ENTITY sube "⊆"> <!ENTITY supe "⊇"> <!ENTITY oplus "⊕"> <!ENTITY otimes "⊗"> <!ENTITY perp "⊥"> <!ENTITY sdot "⋅"> <!ENTITY lceil "⌈"> <!ENTITY rceil "⌉"> <!ENTITY lfloor "⌊"> <!ENTITY rfloor "⌋"> <!ENTITY lang "〈"> <!ENTITY rang "〉"> <!ENTITY loz "◊"> <!ENTITY spades "♠"> <!ENTITY clubs "♣"> <!ENTITY hearts "♥"> <!ENTITY diams "♦"> ]>'; 672 } 673 } 674 675 class_alias('SimplePie\Parser', 'SimplePie_Parser');
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