1<?php 2/** 3 * SimplePie 4 * 5 * A PHP-Based RSS and Atom Feed Framework. 6 * Takes the hard work out of managing a complete RSS/Atom solution. 7 * 8 * Copyright (c) 2004-2016, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without modification, are 12 * permitted provided that the following conditions are met: 13 * 14 * * Redistributions of source code must retain the above copyright notice, this list of 15 * conditions and the following disclaimer. 16 * 17 * * Redistributions in binary form must reproduce the above copyright notice, this list 18 * of conditions and the following disclaimer in the documentation and/or other materials 19 * provided with the distribution. 20 * 21 * * Neither the name of the SimplePie Team nor the names of its contributors may be used 22 * to endorse or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS 26 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 27 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS 28 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 * 35 * @package SimplePie 36 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue 37 * @author Ryan Parman 38 * @author Sam Sneddon 39 * @author Ryan McCue 40 * @link http://simplepie.org/ SimplePie 41 * @license http://www.opensource.org/licenses/bsd-license.php BSD License 42 */ 43 44/** 45 * Parses XML into something sane 46 * 47 * 48 * This class can be overloaded with {@see SimplePie::set_parser_class()} 49 * 50 * @package SimplePie 51 * @subpackage Parsing 52 */ 53class SimplePie_Parser 54{ 55 var $error_code; 56 var $error_string; 57 var $current_line; 58 var $current_column; 59 var $current_byte; 60 var $separator = ' '; 61 var $namespace = array(''); 62 var $element = array(''); 63 var $xml_base = array(''); 64 var $xml_base_explicit = array(false); 65 var $xml_lang = array(''); 66 var $data = array(); 67 var $datas = array(array()); 68 var $current_xhtml_construct = -1; 69 var $encoding; 70 protected $registry; 71 72 public function set_registry(SimplePie_Registry $registry) 73 { 74 $this->registry = $registry; 75 } 76 77 public function parse(&$data, $encoding, $url = '') 78 { 79 if (class_exists('DOMXpath') && function_exists('Mf2\parse')) { 80 $doc = new DOMDocument(); 81 @$doc->loadHTML($data); 82 $xpath = new DOMXpath($doc); 83 // Check for both h-feed and h-entry, as both a feed with no entries 84 // and a list of entries without an h-feed wrapper are both valid. 85 $query = '//*[contains(concat(" ", @class, " "), " h-feed ") or '. 86 'contains(concat(" ", @class, " "), " h-entry ")]'; 87 $result = $xpath->query($query); 88 if ($result->length !== 0) { 89 return $this->parse_microformats($data, $url); 90 } 91 } 92 93 // Use UTF-8 if we get passed US-ASCII, as every US-ASCII character is a UTF-8 character 94 if (strtoupper($encoding) === 'US-ASCII') 95 { 96 $this->encoding = 'UTF-8'; 97 } 98 else 99 { 100 $this->encoding = $encoding; 101 } 102 103 // Strip BOM: 104 // UTF-32 Big Endian BOM 105 if (substr($data, 0, 4) === "\x00\x00\xFE\xFF") 106 { 107 $data = substr($data, 4); 108 } 109 // UTF-32 Little Endian BOM 110 elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00") 111 { 112 $data = substr($data, 4); 113 } 114 // UTF-16 Big Endian BOM 115 elseif (substr($data, 0, 2) === "\xFE\xFF") 116 { 117 $data = substr($data, 2); 118 } 119 // UTF-16 Little Endian BOM 120 elseif (substr($data, 0, 2) === "\xFF\xFE") 121 { 122 $data = substr($data, 2); 123 } 124 // UTF-8 BOM 125 elseif (substr($data, 0, 3) === "\xEF\xBB\xBF") 126 { 127 $data = substr($data, 3); 128 } 129 130 if (substr($data, 0, 5) === '<?xml' && strspn(substr($data, 5, 1), "\x09\x0A\x0D\x20") && ($pos = strpos($data, '?>')) !== false) 131 { 132 $declaration = $this->registry->create('XML_Declaration_Parser', array(substr($data, 5, $pos - 5))); 133 if ($declaration->parse()) 134 { 135 $data = substr($data, $pos + 2); 136 $data = '<?xml version="' . $declaration->version . '" encoding="' . $encoding . '" standalone="' . (($declaration->standalone) ? 'yes' : 'no') . '"?>' ."\n". $this->declare_html_entities() . $data; 137 } 138 else 139 { 140 $this->error_string = 'SimplePie bug! Please report this!'; 141 return false; 142 } 143 } 144 145 $return = true; 146 147 static $xml_is_sane = null; 148 if ($xml_is_sane === null) 149 { 150 $parser_check = xml_parser_create(); 151 xml_parse_into_struct($parser_check, '<foo>&</foo>', $values); 152 xml_parser_free($parser_check); 153 $xml_is_sane = isset($values[0]['value']); 154 } 155 156 // Create the parser 157 if ($xml_is_sane) 158 { 159 $xml = xml_parser_create_ns($this->encoding, $this->separator); 160 xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1); 161 xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0); 162 xml_set_object($xml, $this); 163 xml_set_character_data_handler($xml, 'cdata'); 164 xml_set_element_handler($xml, 'tag_open', 'tag_close'); 165 166 // Parse! 167 if (!xml_parse($xml, $data, true)) 168 { 169 $this->error_code = xml_get_error_code($xml); 170 $this->error_string = xml_error_string($this->error_code); 171 $return = false; 172 } 173 $this->current_line = xml_get_current_line_number($xml); 174 $this->current_column = xml_get_current_column_number($xml); 175 $this->current_byte = xml_get_current_byte_index($xml); 176 xml_parser_free($xml); 177 return $return; 178 } 179 180 libxml_clear_errors(); 181 $xml = new XMLReader(); 182 $xml->xml($data); 183 while (@$xml->read()) 184 { 185 switch ($xml->nodeType) 186 { 187 188 case constant('XMLReader::END_ELEMENT'): 189 if ($xml->namespaceURI !== '') 190 { 191 $tagName = $xml->namespaceURI . $this->separator . $xml->localName; 192 } 193 else 194 { 195 $tagName = $xml->localName; 196 } 197 $this->tag_close(null, $tagName); 198 break; 199 case constant('XMLReader::ELEMENT'): 200 $empty = $xml->isEmptyElement; 201 if ($xml->namespaceURI !== '') 202 { 203 $tagName = $xml->namespaceURI . $this->separator . $xml->localName; 204 } 205 else 206 { 207 $tagName = $xml->localName; 208 } 209 $attributes = array(); 210 while ($xml->moveToNextAttribute()) 211 { 212 if ($xml->namespaceURI !== '') 213 { 214 $attrName = $xml->namespaceURI . $this->separator . $xml->localName; 215 } 216 else 217 { 218 $attrName = $xml->localName; 219 } 220 $attributes[$attrName] = $xml->value; 221 } 222 $this->tag_open(null, $tagName, $attributes); 223 if ($empty) 224 { 225 $this->tag_close(null, $tagName); 226 } 227 break; 228 case constant('XMLReader::TEXT'): 229 230 case constant('XMLReader::CDATA'): 231 $this->cdata(null, $xml->value); 232 break; 233 } 234 } 235 if ($error = libxml_get_last_error()) 236 { 237 $this->error_code = $error->code; 238 $this->error_string = $error->message; 239 $this->current_line = $error->line; 240 $this->current_column = $error->column; 241 return false; 242 } 243 244 return true; 245 } 246 247 public function get_error_code() 248 { 249 return $this->error_code; 250 } 251 252 public function get_error_string() 253 { 254 return $this->error_string; 255 } 256 257 public function get_current_line() 258 { 259 return $this->current_line; 260 } 261 262 public function get_current_column() 263 { 264 return $this->current_column; 265 } 266 267 public function get_current_byte() 268 { 269 return $this->current_byte; 270 } 271 272 public function get_data() 273 { 274 return $this->data; 275 } 276 277 public function tag_open($parser, $tag, $attributes) 278 { 279 list($this->namespace[], $this->element[]) = $this->split_ns($tag); 280 281 $attribs = array(); 282 foreach ($attributes as $name => $value) 283 { 284 list($attrib_namespace, $attribute) = $this->split_ns($name); 285 $attribs[$attrib_namespace][$attribute] = $value; 286 } 287 288 if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['base'])) 289 { 290 $base = $this->registry->call('Misc', 'absolutize_url', array($attribs[SIMPLEPIE_NAMESPACE_XML]['base'], end($this->xml_base))); 291 if ($base !== false) 292 { 293 $this->xml_base[] = $base; 294 $this->xml_base_explicit[] = true; 295 } 296 } 297 else 298 { 299 $this->xml_base[] = end($this->xml_base); 300 $this->xml_base_explicit[] = end($this->xml_base_explicit); 301 } 302 303 if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['lang'])) 304 { 305 $this->xml_lang[] = $attribs[SIMPLEPIE_NAMESPACE_XML]['lang']; 306 } 307 else 308 { 309 $this->xml_lang[] = end($this->xml_lang); 310 } 311 312 if ($this->current_xhtml_construct >= 0) 313 { 314 $this->current_xhtml_construct++; 315 if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML) 316 { 317 $this->data['data'] .= '<' . end($this->element); 318 if (isset($attribs[''])) 319 { 320 foreach ($attribs[''] as $name => $value) 321 { 322 $this->data['data'] .= ' ' . $name . '="' . htmlspecialchars($value, ENT_COMPAT, $this->encoding) . '"'; 323 } 324 } 325 $this->data['data'] .= '>'; 326 } 327 } 328 else 329 { 330 $this->datas[] =& $this->data; 331 $this->data =& $this->data['child'][end($this->namespace)][end($this->element)][]; 332 $this->data = array('data' => '', 'attribs' => $attribs, 'xml_base' => end($this->xml_base), 'xml_base_explicit' => end($this->xml_base_explicit), 'xml_lang' => end($this->xml_lang)); 333 if ((end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_03 && in_array(end($this->element), array('title', 'tagline', 'copyright', 'info', 'summary', 'content')) && isset($attribs['']['mode']) && $attribs['']['mode'] === 'xml') 334 || (end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_10 && in_array(end($this->element), array('rights', 'subtitle', 'summary', 'info', 'title', 'content')) && isset($attribs['']['type']) && $attribs['']['type'] === 'xhtml') 335 || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_20 && in_array(end($this->element), array('title'))) 336 || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_090 && in_array(end($this->element), array('title'))) 337 || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_10 && in_array(end($this->element), array('title')))) 338 { 339 $this->current_xhtml_construct = 0; 340 } 341 } 342 } 343 344 public function cdata($parser, $cdata) 345 { 346 if ($this->current_xhtml_construct >= 0) 347 { 348 $this->data['data'] .= htmlspecialchars($cdata, ENT_QUOTES, $this->encoding); 349 } 350 else 351 { 352 $this->data['data'] .= $cdata; 353 } 354 } 355 356 public function tag_close($parser, $tag) 357 { 358 if ($this->current_xhtml_construct >= 0) 359 { 360 $this->current_xhtml_construct--; 361 if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML && !in_array(end($this->element), array('area', 'base', 'basefont', 'br', 'col', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param'))) 362 { 363 $this->data['data'] .= '</' . end($this->element) . '>'; 364 } 365 } 366 if ($this->current_xhtml_construct === -1) 367 { 368 $this->data =& $this->datas[count($this->datas) - 1]; 369 array_pop($this->datas); 370 } 371 372 array_pop($this->element); 373 array_pop($this->namespace); 374 array_pop($this->xml_base); 375 array_pop($this->xml_base_explicit); 376 array_pop($this->xml_lang); 377 } 378 379 public function split_ns($string) 380 { 381 static $cache = array(); 382 if (!isset($cache[$string])) 383 { 384 if ($pos = strpos($string, $this->separator)) 385 { 386 static $separator_length; 387 if (!$separator_length) 388 { 389 $separator_length = strlen($this->separator); 390 } 391 $namespace = substr($string, 0, $pos); 392 $local_name = substr($string, $pos + $separator_length); 393 if (strtolower($namespace) === SIMPLEPIE_NAMESPACE_ITUNES) 394 { 395 $namespace = SIMPLEPIE_NAMESPACE_ITUNES; 396 } 397 398 // Normalize the Media RSS namespaces 399 if ($namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG || 400 $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2 || 401 $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG3 || 402 $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4 || 403 $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5 ) 404 { 405 $namespace = SIMPLEPIE_NAMESPACE_MEDIARSS; 406 } 407 $cache[$string] = array($namespace, $local_name); 408 } 409 else 410 { 411 $cache[$string] = array('', $string); 412 } 413 } 414 return $cache[$string]; 415 } 416 417 private function parse_hcard($data, $category = false) { 418 $name = ''; 419 $link = ''; 420 // Check if h-card is set and pass that information on in the link. 421 if (isset($data['type']) && in_array('h-card', $data['type'])) { 422 if (isset($data['properties']['name'][0])) { 423 $name = $data['properties']['name'][0]; 424 } 425 if (isset($data['properties']['url'][0])) { 426 $link = $data['properties']['url'][0]; 427 if ($name === '') { 428 $name = $link; 429 } 430 else { 431 // can't have commas in categories. 432 $name = str_replace(',', '', $name); 433 } 434 $person_tag = $category ? '<span class="person-tag"></span>' : ''; 435 return '<a class="h-card" href="'.$link.'">'.$person_tag.$name.'</a>'; 436 } 437 } 438 return isset($data['value']) ? $data['value'] : ''; 439 } 440 441 private function parse_microformats(&$data, $url) { 442 $feed_title = ''; 443 $feed_author = NULL; 444 $author_cache = array(); 445 $items = array(); 446 $entries = array(); 447 $mf = Mf2\parse($data, $url); 448 // First look for an h-feed. 449 $h_feed = array(); 450 foreach ($mf['items'] as $mf_item) { 451 if (in_array('h-feed', $mf_item['type'])) { 452 $h_feed = $mf_item; 453 break; 454 } 455 // Also look for h-feed or h-entry in the children of each top level item. 456 if (!isset($mf_item['children'][0]['type'])) continue; 457 if (in_array('h-feed', $mf_item['children'][0]['type'])) { 458 $h_feed = $mf_item['children'][0]; 459 // In this case the parent of the h-feed may be an h-card, so use it as 460 // the feed_author. 461 if (in_array('h-card', $mf_item['type'])) $feed_author = $mf_item; 462 break; 463 } 464 else if (in_array('h-entry', $mf_item['children'][0]['type'])) { 465 $entries = $mf_item['children']; 466 // In this case the parent of the h-entry list may be an h-card, so use 467 // it as the feed_author. 468 if (in_array('h-card', $mf_item['type'])) $feed_author = $mf_item; 469 break; 470 } 471 } 472 if (isset($h_feed['children'])) { 473 $entries = $h_feed['children']; 474 // Also set the feed title and store author from the h-feed if available. 475 if (isset($mf['items'][0]['properties']['name'][0])) { 476 $feed_title = $mf['items'][0]['properties']['name'][0]; 477 } 478 if (isset($mf['items'][0]['properties']['author'][0])) { 479 $feed_author = $mf['items'][0]['properties']['author'][0]; 480 } 481 } 482 else if (count($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 = array(); 489 $title = ''; 490 $description = ''; 491 if (isset($entry['properties']['url'][0])) { 492 $link = $entry['properties']['url'][0]; 493 if (isset($link['value'])) $link = $link['value']; 494 $item['link'] = array(array('data' => $link)); 495 } 496 if (isset($entry['properties']['uid'][0])) { 497 $guid = $entry['properties']['uid'][0]; 498 if (isset($guid['value'])) $guid = $guid['value']; 499 $item['guid'] = array(array('data' => $guid)); 500 } 501 if (isset($entry['properties']['name'][0])) { 502 $title = $entry['properties']['name'][0]; 503 if (isset($title['value'])) $title = $title['value']; 504 $item['title'] = array(array('data' => $title)); 505 } 506 if (isset($entry['properties']['author'][0]) || isset($feed_author)) { 507 // author is a special case, it can be plain text or an h-card array. 508 // If it's plain text it can also be a url that should be followed to 509 // get the actual h-card. 510 $author = isset($entry['properties']['author'][0]) ? 511 $entry['properties']['author'][0] : $feed_author; 512 if (!is_string($author)) { 513 $author = $this->parse_hcard($author); 514 } 515 else if (strpos($author, 'http') === 0) { 516 if (isset($author_cache[$author])) { 517 $author = $author_cache[$author]; 518 } 519 else { 520 $mf = Mf2\fetch($author); 521 foreach ($mf['items'] as $hcard) { 522 // Only interested in an h-card by itself in this case. 523 if (!in_array('h-card', $hcard['type'])) { 524 continue; 525 } 526 // It must have a url property matching what we fetched. 527 if (!isset($hcard['properties']['url']) || 528 !(in_array($author, $hcard['properties']['url']))) { 529 continue; 530 } 531 // Save parse_hcard the trouble of finding the correct url. 532 $hcard['properties']['url'][0] = $author; 533 // Cache this h-card for the next h-entry to check. 534 $author_cache[$author] = $this->parse_hcard($hcard); 535 $author = $author_cache[$author]; 536 break; 537 } 538 } 539 } 540 $item['author'] = array(array('data' => $author)); 541 } 542 if (isset($entry['properties']['photo'][0])) { 543 // If a photo is also in content, don't need to add it again here. 544 $content = ''; 545 if (isset($entry['properties']['content'][0]['html'])) { 546 $content = $entry['properties']['content'][0]['html']; 547 } 548 $photo_list = array(); 549 for ($j = 0; $j < count($entry['properties']['photo']); $j++) { 550 $photo = $entry['properties']['photo'][$j]; 551 if (!empty($photo) && strpos($content, $photo) === false) { 552 $photo_list[] = $photo; 553 } 554 } 555 // When there's more than one photo show the first and use a lightbox. 556 // Need a permanent, unique name for the image set, but don't have 557 // anything unique except for the content itself, so use that. 558 $count = count($photo_list); 559 if ($count > 1) { 560 $image_set_id = preg_replace('/[[:^alnum:]]/', '', $photo_list[0]); 561 $description = '<p>'; 562 for ($j = 0; $j < $count; $j++) { 563 $hidden = $j === 0 ? '' : 'class="hidden" '; 564 $description .= '<a href="'.$photo_list[$j].'" '.$hidden. 565 'data-lightbox="image-set-'.$image_set_id.'">'. 566 '<img src="'.$photo_list[$j].'"></a>'; 567 } 568 $description .= '<br><b>'.$count.' photos</b></p>'; 569 } 570 else if ($count == 1) { 571 $description = '<p><img src="'.$photo_list[0].'"></p>'; 572 } 573 } 574 if (isset($entry['properties']['content'][0]['html'])) { 575 // e-content['value'] is the same as p-name when they are on the same 576 // element. Use this to replace title with a strip_tags version so 577 // that alt text from images is not included in the title. 578 if ($entry['properties']['content'][0]['value'] === $title) { 579 $title = strip_tags($entry['properties']['content'][0]['html']); 580 $item['title'] = array(array('data' => $title)); 581 } 582 $description .= $entry['properties']['content'][0]['html']; 583 if (isset($entry['properties']['in-reply-to'][0])) { 584 $in_reply_to = ''; 585 if (is_string($entry['properties']['in-reply-to'][0])) { 586 $in_reply_to = $entry['properties']['in-reply-to'][0]; 587 } 588 else if (isset($entry['properties']['in-reply-to'][0]['value'])) { 589 $in_reply_to = $entry['properties']['in-reply-to'][0]['value']; 590 } 591 if ($in_reply_to !== '') { 592 $description .= '<p><span class="in-reply-to"></span> '. 593 '<a href="'.$in_reply_to.'">'.$in_reply_to.'</a><p>'; 594 } 595 } 596 $item['description'] = array(array('data' => $description)); 597 } 598 if (isset($entry['properties']['category'])) { 599 $category_csv = ''; 600 // Categories can also contain h-cards. 601 foreach ($entry['properties']['category'] as $category) { 602 if ($category_csv !== '') $category_csv .= ', '; 603 if (is_string($category)) { 604 // Can't have commas in categories. 605 $category_csv .= str_replace(',', '', $category); 606 } 607 else { 608 $category_csv .= $this->parse_hcard($category, true); 609 } 610 } 611 $item['category'] = array(array('data' => $category_csv)); 612 } 613 if (isset($entry['properties']['published'][0])) { 614 $timestamp = strtotime($entry['properties']['published'][0]); 615 $pub_date = date('F j Y g:ia', $timestamp).' GMT'; 616 $item['pubDate'] = array(array('data' => $pub_date)); 617 } 618 // The title and description are set to the empty string to represent 619 // a deleted item (which also makes it an invalid rss item). 620 if (isset($entry['properties']['deleted'][0])) { 621 $item['title'] = array(array('data' => '')); 622 $item['description'] = array(array('data' => '')); 623 } 624 $items[] = array('child' => array('' => $item)); 625 } 626 } 627 // Mimic RSS data format when storing microformats. 628 $link = array(array('data' => $url)); 629 $image = ''; 630 if (!is_string($feed_author) && 631 isset($feed_author['properties']['photo'][0])) { 632 $image = array(array('child' => array('' => array('url' => 633 array(array('data' => $feed_author['properties']['photo'][0])))))); 634 } 635 // Use the name given for the h-feed, or get the title from the html. 636 if ($feed_title !== '') { 637 $feed_title = array(array('data' => htmlspecialchars($feed_title))); 638 } 639 else if ($position = strpos($data, '<title>')) { 640 $start = $position < 200 ? 0 : $position - 200; 641 $check = substr($data, $start, 400); 642 $matches = array(); 643 if (preg_match('/<title>(.+)<\/title>/', $check, $matches)) { 644 $feed_title = array(array('data' => htmlspecialchars($matches[1]))); 645 } 646 } 647 $channel = array('channel' => array(array('child' => array('' => 648 array('link' => $link, 'image' => $image, 'title' => $feed_title, 649 'item' => $items))))); 650 $rss = array(array('attribs' => array('' => array('version' => '2.0')), 651 'child' => array('' => $channel))); 652 $this->data = array('child' => array('' => array('rss' => $rss))); 653 return true; 654 } 655 656 private function declare_html_entities() { 657 // This is required because the RSS specification says that entity-encoded 658 // html is allowed, but the xml specification says they must be declared. 659 return '<!DOCTYPE html [ <!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 "♦"> ]>'; 660 } 661} 662