} else {
$t->set_block('page', 'next_link_active', 'next_link_hide');
}
}
$ebook_body = '';
$ebook_head = '';
$dom = new DOMDocument();
@$dom->loadHTMLFile($basedir . $subsection_path[$current_sid][$current_ssid]);
if (isset($_SESSION['glossary_terms_regexp']) and !empty($_SESSION['glossary_terms_regexp'])) {
$xpath = new DOMXpath($dom);
$textNodes = $xpath->query('//text()');
foreach ($textNodes as $textNode) {
if (!empty($textNode->data)) {
$new_contents = glossary_expand($textNode->data);
if ($new_contents != $textNode->data) {
$newdoc = new DOMDocument();
$newdoc->loadXML('<span>' . $new_contents . '</span>', LIBXML_NONET|LIBXML_DTDLOAD|LIBXML_DTDATTR);
$newnode = $dom->importNode($newdoc->getElementsByTagName('span')->item(0), true);
$textNode->parentNode->replaceChild($newnode, $textNode);
}
}
}
}
foreach (array('link', 'style', 'script') as $tagname) {
foreach ($dom->getElementsByTagName($tagname) as $element) {
$ebook_head .= str_replace(array('<![CDATA[', ']]>'), array('', ''), dom_save_html($dom, $element));
}
}
function standard_text_escape($text, $mathimg = '../../courses/mathimg/')
{
global $purifier;
$text = preg_replace_callback('/\\[m\\].*?\\[\\/m\\]/s', 'math_unescape', $text);
$html = $purifier->purify(mathfilter($text, 12, $mathimg));
if (!isset($_SESSION['glossary_terms_regexp'])) {
return $html;
}
$dom = new DOMDocument();
// workaround because DOM doesn't handle utf8 encoding correctly.
@$dom->loadHTML('<div>' . mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8') . '</div>');
$xpath = new DOMXpath($dom);
$textNodes = $xpath->query('//text()');
foreach ($textNodes as $textNode) {
if (!empty($textNode->data)) {
$new_contents = glossary_expand($textNode->data);
if ($new_contents != $textNode->data) {
$newdoc = new DOMDocument();
$newdoc->loadXML('<span>' . $new_contents . '</span>', LIBXML_NONET | LIBXML_DTDLOAD | LIBXML_DTDATTR);
$newnode = $dom->importNode($newdoc->getElementsByTagName('span')->item(0), true);
$textNode->parentNode->replaceChild($newnode, $textNode);
unset($newdoc);
unset($newnode);
}
}
}
$base_node = $dom->getElementsByTagName('div')->item(0);
// iframe hack
return preg_replace(array('|^<div>(.*)</div>$|s', '#(<iframe [^>]+)/>#'), array('\\1', '\\1></iframe>'), dom_save_html($dom, $base_node));
}
