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- Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
- Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
- PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
/lib/simplepie/library/SimplePie/ -> Parser.php (source)
<?php> /** > declare(strict_types=1);* SimplePie * * A PHP-Based RSS and Atom Feed Framework. * Takes the hard work out of managing a complete RSS/Atom solution. *< * Copyright (c) 2004-2016, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors> * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors* All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * * Neither the name of the SimplePie Team nor the names of its contributors may be used * to endorse or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * @package SimplePie< * @copyright 2004-2016 Ryan Parman, Geoffrey Sneddon, Ryan McCue> * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue* @author Ryan Parman< * @author Geoffrey Sneddon> * @author Sam Sneddon* @author Ryan McCue * @link http://simplepie.org/ SimplePie * @license http://www.opensource.org/licenses/bsd-license.php BSD License */< /** < * Parses XML into something sane < * < * < * This class can be overloaded with {@see SimplePie::set_parser_class()} < * < * @package SimplePie < * @subpackage Parsing < */ < class SimplePie_Parser < { < var $error_code; < var $error_string; < var $current_line; < var $current_column; < var $current_byte; < var $separator = ' '; < var $namespace = array(''); < var $element = array(''); < var $xml_base = array(''); < var $xml_base_explicit = array(false); < var $xml_lang = array(''); < var $data = array(); < var $datas = array(array()); < var $current_xhtml_construct = -1; < var $encoding; < protected $registry; < < public function set_registry(SimplePie_Registry $registry) < { < $this->registry = $registry; < } < < public function parse(&$data, $encoding, $url = '') < { < if (class_exists('DOMXpath') && function_exists('Mf2\parse')) { < $doc = new DOMDocument(); < @$doc->loadHTML($data); < $xpath = new DOMXpath($doc); < // Check for both h-feed and h-entry, as both a feed with no entries < // and a list of entries without an h-feed wrapper are both valid. < $query = '//*[contains(concat(" ", @class, " "), " h-feed ") or '. < 'contains(concat(" ", @class, " "), " h-entry ")]'; < $result = $xpath->query($query); < if ($result->length !== 0) { < return $this->parse_microformats($data, $url); < } < } < < // Use UTF-8 if we get passed US-ASCII, as every US-ASCII character is a UTF-8 character < if (strtoupper($encoding) === 'US-ASCII') < { < $this->encoding = 'UTF-8'; < } < else < { < $this->encoding = $encoding; < } < < // Strip BOM: < // UTF-32 Big Endian BOM < if (substr($data, 0, 4) === "\x00\x00\xFE\xFF") < { < $data = substr($data, 4); < } < // UTF-32 Little Endian BOM < elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00") < { < $data = substr($data, 4); < } < // UTF-16 Big Endian BOM < elseif (substr($data, 0, 2) === "\xFE\xFF") < { < $data = substr($data, 2); < } < // UTF-16 Little Endian BOM < elseif (substr($data, 0, 2) === "\xFF\xFE") < { < $data = substr($data, 2); < } < // UTF-8 BOM < elseif (substr($data, 0, 3) === "\xEF\xBB\xBF") < { < $data = substr($data, 3); < } < < if (substr($data, 0, 5) === '<?xml' && strspn(substr($data, 5, 1), "\x09\x0A\x0D\x20") && ($pos = strpos($data, '?>')) !== false) < { < $declaration = $this->registry->create('XML_Declaration_Parser', array(substr($data, 5, $pos - 5))); < if ($declaration->parse()) < { < $data = substr($data, $pos + 2); < $data = '<?xml version="' . $declaration->version . '" encoding="' . $encoding . '" standalone="' . (($declaration->standalone) ? 'yes' : 'no') . '"?>' ."\n". $this->declare_html_entities() . $data; < } < else < { < $this->error_string = 'SimplePie bug! Please report this!'; < return false; < } < } < < $return = true; < < static $xml_is_sane = null; < if ($xml_is_sane === null) < { < $parser_check = xml_parser_create(); < xml_parse_into_struct($parser_check, '<foo>&</foo>', $values); < xml_parser_free($parser_check); < $xml_is_sane = isset($values[0]['value']); < } < < // Create the parser < if ($xml_is_sane) < { < $xml = xml_parser_create_ns($this->encoding, $this->separator); < xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1); < xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0); < xml_set_object($xml, $this); < xml_set_character_data_handler($xml, 'cdata'); < xml_set_element_handler($xml, 'tag_open', 'tag_close'); < < // Parse! < if (!xml_parse($xml, $data, true)) < { < $this->error_code = xml_get_error_code($xml); < $this->error_string = xml_error_string($this->error_code); < $return = false; < } < $this->current_line = xml_get_current_line_number($xml); < $this->current_column = xml_get_current_column_number($xml); < $this->current_byte = xml_get_current_byte_index($xml); < xml_parser_free($xml); < return $return; < } < < libxml_clear_errors(); < $xml = new XMLReader(); < $xml->xml($data); < while (@$xml->read()) < { < switch ($xml->nodeType) < { < < case constant('XMLReader::END_ELEMENT'): < if ($xml->namespaceURI !== '') < { < $tagName = $xml->namespaceURI . $this->separator . $xml->localName; < } < else < { < $tagName = $xml->localName; < } < $this->tag_close(null, $tagName); < break; < case constant('XMLReader::ELEMENT'): < $empty = $xml->isEmptyElement; < if ($xml->namespaceURI !== '') < { < $tagName = $xml->namespaceURI . $this->separator . $xml->localName; < } < else < { < $tagName = $xml->localName; < } < $attributes = array(); < while ($xml->moveToNextAttribute()) < { < if ($xml->namespaceURI !== '') < { < $attrName = $xml->namespaceURI . $this->separator . $xml->localName; < } < else < { < $attrName = $xml->localName; < } < $attributes[$attrName] = $xml->value; < } < $this->tag_open(null, $tagName, $attributes); < if ($empty) < { < $this->tag_close(null, $tagName); < } < break; < case constant('XMLReader::TEXT'): < < case constant('XMLReader::CDATA'): < $this->cdata(null, $xml->value); < break; < } < } < if ($error = libxml_get_last_error()) < { < $this->error_code = $error->code; < $this->error_string = $error->message; < $this->current_line = $error->line; < $this->current_column = $error->column; < return false; < } < < return true; < } < < public function get_error_code() < { < return $this->error_code; < }> use SimplePie\Parser;< public function get_error_string() < { < return $this->error_string; < } < < public function get_current_line() < { < return $this->current_line; < } < < public function get_current_column() < { < return $this->current_column; < } < < public function get_current_byte() < { < return $this->current_byte; < } < < public function get_data() < { < return $this->data; < }> class_exists('SimplePie\Parser');< public function tag_open($parser, $tag, $attributes) < { < list($this->namespace[], $this->element[]) = $this->split_ns($tag);> // @trigger_error(sprintf('Using the "SimplePie_Parser" class is deprecated since SimplePie 1.7.0, use "SimplePie\Parser" instead.'), \E_USER_DEPRECATED);< $attribs = array(); < foreach ($attributes as $name => $value)> if (\false) { > /** @deprecated since SimplePie 1.7.0, use "SimplePie\Parser" instead */ > class SimplePie_Parser extends Parser{< list($attrib_namespace, $attribute) = $this->split_ns($name); < $attribs[$attrib_namespace][$attribute] = $value; < } < < if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['base'])) < { < $base = $this->registry->call('Misc', 'absolutize_url', array($attribs[SIMPLEPIE_NAMESPACE_XML]['base'], end($this->xml_base))); < if ($base !== false) < { < $this->xml_base[] = $base; < $this->xml_base_explicit[] = true; < } < } < else < { < $this->xml_base[] = end($this->xml_base); < $this->xml_base_explicit[] = end($this->xml_base_explicit); < } < < if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['lang'])) < { < $this->xml_lang[] = $attribs[SIMPLEPIE_NAMESPACE_XML]['lang']; < } < else < { < $this->xml_lang[] = end($this->xml_lang); < } < < if ($this->current_xhtml_construct >= 0) < { < $this->current_xhtml_construct++; < if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML) < { < $this->data['data'] .= '<' . end($this->element); < if (isset($attribs[''])) < { < foreach ($attribs[''] as $name => $value) < { < $this->data['data'] .= ' ' . $name . '="' . htmlspecialchars($value, ENT_COMPAT, $this->encoding) . '"'; < } < } < $this->data['data'] .= '>'; < } < } < else < { < $this->datas[] =& $this->data; < $this->data =& $this->data['child'][end($this->namespace)][end($this->element)][]; < $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)); < if ((end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_03 && in_array(end($this->element), array('title', 'tagline', 'copyright', 'info', 'summary', 'content')) && isset($attribs['']['mode']) && $attribs['']['mode'] === 'xml') < || (end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_10 && in_array(end($this->element), array('rights', 'subtitle', 'summary', 'info', 'title', 'content')) && isset($attribs['']['type']) && $attribs['']['type'] === 'xhtml') < || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_20 && in_array(end($this->element), array('title'))) < || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_090 && in_array(end($this->element), array('title'))) < || (end($this->namespace) === SIMPLEPIE_NAMESPACE_RSS_10 && in_array(end($this->element), array('title')))) < { < $this->current_xhtml_construct = 0; < } < } < } < < public function cdata($parser, $cdata) < { < if ($this->current_xhtml_construct >= 0) < { < $this->data['data'] .= htmlspecialchars($cdata, ENT_QUOTES, $this->encoding); < } < else < { < $this->data['data'] .= $cdata; < } < } < < public function tag_close($parser, $tag) < { < if ($this->current_xhtml_construct >= 0) < { < $this->current_xhtml_construct--; < if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML && !in_array(end($this->element), array('area', 'base', 'basefont', 'br', 'col', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param'))) < { < $this->data['data'] .= '</' . end($this->element) . '>'; < } < } < if ($this->current_xhtml_construct === -1) < { < $this->data =& $this->datas[count($this->datas) - 1]; < array_pop($this->datas); < } < < array_pop($this->element); < array_pop($this->namespace); < array_pop($this->xml_base); < array_pop($this->xml_base_explicit); < array_pop($this->xml_lang); < } < < public function split_ns($string) < { < static $cache = array(); < if (!isset($cache[$string])) < { < if ($pos = strpos($string, $this->separator)) < { < static $separator_length; < if (!$separator_length) < { < $separator_length = strlen($this->separator); < } < $namespace = substr($string, 0, $pos); < $local_name = substr($string, $pos + $separator_length); < if (strtolower($namespace) === SIMPLEPIE_NAMESPACE_ITUNES) < { < $namespace = SIMPLEPIE_NAMESPACE_ITUNES; < } < < // Normalize the Media RSS namespaces < if ($namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG || < $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2 || < $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG3 || < $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4 || < $namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5 ) < { < $namespace = SIMPLEPIE_NAMESPACE_MEDIARSS; < } < $cache[$string] = array($namespace, $local_name); < } < else < { < $cache[$string] = array('', $string); < } < } < return $cache[$string]; < } < < private function parse_hcard($data, $category = false) { < $name = ''; < $link = ''; < // Check if h-card is set and pass that information on in the link. < if (isset($data['type']) && in_array('h-card', $data['type'])) { < if (isset($data['properties']['name'][0])) { < $name = $data['properties']['name'][0]; < } < if (isset($data['properties']['url'][0])) { < $link = $data['properties']['url'][0]; < if ($name === '') { < $name = $link; < } < else { < // can't have commas in categories. < $name = str_replace(',', '', $name); < } < $person_tag = $category ? '<span class="person-tag"></span>' : ''; < return '<a class="h-card" href="'.$link.'">'.$person_tag.$name.'</a>'; < } < } < return isset($data['value']) ? $data['value'] : ''; < } < < private function parse_microformats(&$data, $url) { < $feed_title = ''; < $feed_author = NULL; < $author_cache = array(); < $items = array(); < $entries = array(); < $mf = Mf2\parse($data, $url); < // First look for an h-feed. < $h_feed = array(); < foreach ($mf['items'] as $mf_item) { < if (in_array('h-feed', $mf_item['type'])) { < $h_feed = $mf_item; < break; < } < // Also look for h-feed or h-entry in the children of each top level item. < if (!isset($mf_item['children'][0]['type'])) continue; < if (in_array('h-feed', $mf_item['children'][0]['type'])) { < $h_feed = $mf_item['children'][0]; < // In this case the parent of the h-feed may be an h-card, so use it as < // the feed_author. < if (in_array('h-card', $mf_item['type'])) $feed_author = $mf_item; < break; < } < else if (in_array('h-entry', $mf_item['children'][0]['type'])) { < $entries = $mf_item['children']; < // In this case the parent of the h-entry list may be an h-card, so use < // it as the feed_author. < if (in_array('h-card', $mf_item['type'])) $feed_author = $mf_item; < break; < } < } < if (isset($h_feed['children'])) { < $entries = $h_feed['children']; < // Also set the feed title and store author from the h-feed if available. < if (isset($mf['items'][0]['properties']['name'][0])) { < $feed_title = $mf['items'][0]['properties']['name'][0]; < } < if (isset($mf['items'][0]['properties']['author'][0])) { < $feed_author = $mf['items'][0]['properties']['author'][0]; < } < } < else if (count($entries) === 0) { < $entries = $mf['items']; < } < for ($i = 0; $i < count($entries); $i++) { < $entry = $entries[$i]; < if (in_array('h-entry', $entry['type'])) { < $item = array(); < $title = ''; < $description = ''; < if (isset($entry['properties']['url'][0])) { < $link = $entry['properties']['url'][0]; < if (isset($link['value'])) $link = $link['value']; < $item['link'] = array(array('data' => $link)); < } < if (isset($entry['properties']['uid'][0])) { < $guid = $entry['properties']['uid'][0]; < if (isset($guid['value'])) $guid = $guid['value']; < $item['guid'] = array(array('data' => $guid)); < } < if (isset($entry['properties']['name'][0])) { < $title = $entry['properties']['name'][0]; < if (isset($title['value'])) $title = $title['value']; < $item['title'] = array(array('data' => $title)); < } < if (isset($entry['properties']['author'][0]) || isset($feed_author)) { < // author is a special case, it can be plain text or an h-card array. < // If it's plain text it can also be a url that should be followed to < // get the actual h-card. < $author = isset($entry['properties']['author'][0]) ? < $entry['properties']['author'][0] : $feed_author; < if (!is_string($author)) { < $author = $this->parse_hcard($author); < } < else if (strpos($author, 'http') === 0) { < if (isset($author_cache[$author])) { < $author = $author_cache[$author]; < } < else { < $mf = Mf2\fetch($author); < foreach ($mf['items'] as $hcard) { < // Only interested in an h-card by itself in this case. < if (!in_array('h-card', $hcard['type'])) { < continue; < } < // It must have a url property matching what we fetched. < if (!isset($hcard['properties']['url']) || < !(in_array($author, $hcard['properties']['url']))) { < continue; < } < // Save parse_hcard the trouble of finding the correct url. < $hcard['properties']['url'][0] = $author; < // Cache this h-card for the next h-entry to check. < $author_cache[$author] = $this->parse_hcard($hcard); < $author = $author_cache[$author]; < break; < } < } < } < $item['author'] = array(array('data' => $author)); < } < if (isset($entry['properties']['photo'][0])) { < // If a photo is also in content, don't need to add it again here. < $content = ''; < if (isset($entry['properties']['content'][0]['html'])) { < $content = $entry['properties']['content'][0]['html']; < } < $photo_list = array(); < for ($j = 0; $j < count($entry['properties']['photo']); $j++) { < $photo = $entry['properties']['photo'][$j]; < if (!empty($photo) && strpos($content, $photo) === false) { < $photo_list[] = $photo; < } < } < // When there's more than one photo show the first and use a lightbox. < // Need a permanent, unique name for the image set, but don't have < // anything unique except for the content itself, so use that. < $count = count($photo_list); < if ($count > 1) { < $image_set_id = preg_replace('/[[:^alnum:]]/', '', $photo_list[0]); < $description = '<p>'; < for ($j = 0; $j < $count; $j++) { < $hidden = $j === 0 ? '' : 'class="hidden" '; < $description .= '<a href="'.$photo_list[$j].'" '.$hidden. < 'data-lightbox="image-set-'.$image_set_id.'">'. < '<img src="'.$photo_list[$j].'"></a>'; < } < $description .= '<br><b>'.$count.' photos</b></p>'; < } < else if ($count == 1) { < $description = '<p><img src="'.$photo_list[0].'"></p>'; < } < } < if (isset($entry['properties']['content'][0]['html'])) { < // e-content['value'] is the same as p-name when they are on the same < // element. Use this to replace title with a strip_tags version so < // that alt text from images is not included in the title. < if ($entry['properties']['content'][0]['value'] === $title) { < $title = strip_tags($entry['properties']['content'][0]['html']); < $item['title'] = array(array('data' => $title)); < } < $description .= $entry['properties']['content'][0]['html']; < if (isset($entry['properties']['in-reply-to'][0])) { < $in_reply_to = ''; < if (is_string($entry['properties']['in-reply-to'][0])) { < $in_reply_to = $entry['properties']['in-reply-to'][0]; < } < else if (isset($entry['properties']['in-reply-to'][0]['value'])) { < $in_reply_to = $entry['properties']['in-reply-to'][0]['value']; < } < if ($in_reply_to !== '') { < $description .= '<p><span class="in-reply-to"></span> '. < '<a href="'.$in_reply_to.'">'.$in_reply_to.'</a><p>'; < } < } < $item['description'] = array(array('data' => $description)); < } < if (isset($entry['properties']['category'])) { < $category_csv = ''; < // Categories can also contain h-cards. < foreach ($entry['properties']['category'] as $category) { < if ($category_csv !== '') $category_csv .= ', '; < if (is_string($category)) { < // Can't have commas in categories. < $category_csv .= str_replace(',', '', $category); < } < else { < $category_csv .= $this->parse_hcard($category, true); < } < } < $item['category'] = array(array('data' => $category_csv)); < } < if (isset($entry['properties']['published'][0])) { < $timestamp = strtotime($entry['properties']['published'][0]); < $pub_date = date('F j Y g:ia', $timestamp).' GMT'; < $item['pubDate'] = array(array('data' => $pub_date)); < } < // The title and description are set to the empty string to represent < // a deleted item (which also makes it an invalid rss item). < if (isset($entry['properties']['deleted'][0])) { < $item['title'] = array(array('data' => '')); < $item['description'] = array(array('data' => '')); < } < $items[] = array('child' => array('' => $item)); < } < } < // Mimic RSS data format when storing microformats. < $link = array(array('data' => $url)); < $image = ''; < if (!is_string($feed_author) && < isset($feed_author['properties']['photo'][0])) { < $image = array(array('child' => array('' => array('url' => < array(array('data' => $feed_author['properties']['photo'][0])))))); < } < // Use the name given for the h-feed, or get the title from the html. < if ($feed_title !== '') { < $feed_title = array(array('data' => htmlspecialchars($feed_title))); < } < else if ($position = strpos($data, '<title>')) { < $start = $position < 200 ? 0 : $position - 200; < $check = substr($data, $start, 400); < $matches = array(); < if (preg_match('/<title>(.+)<\/title>/', $check, $matches)) { < $feed_title = array(array('data' => htmlspecialchars($matches[1]))); < } < } < $channel = array('channel' => array(array('child' => array('' => < array('link' => $link, 'image' => $image, 'title' => $feed_title, < 'item' => $items))))); < $rss = array(array('attribs' => array('' => array('version' => '2.0')), < 'child' => array('' => $channel))); < $this->data = array('child' => array('' => array('rss' => $rss))); < return true; < } < < private function declare_html_entities() { < // This is required because the RSS specification says that entity-encoded < // html is allowed, but the xml specification says they must be declared. < 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 "♦"> ]>';} }
