/**
* Return an instance of the mustache class.
*
* @since 2.9
* @return Mustache_Engine
*/
protected function get_mustache()
{
global $CFG;
if ($this->mustache === null) {
$themename = $this->page->theme->name;
$themerev = theme_get_revision();
$cachedir = make_localcache_directory("mustache/{$themerev}/{$themename}");
$loader = new \core\output\mustache_filesystem_loader();
$stringhelper = new \core\output\mustache_string_helper();
$quotehelper = new \core\output\mustache_quote_helper();
$jshelper = new \core\output\mustache_javascript_helper($this->page->requires);
$pixhelper = new \core\output\mustache_pix_helper($this);
// We only expose the variables that are exposed to JS templates.
$safeconfig = $this->page->requires->get_config_for_javascript($this->page, $this);
$helpers = array('config' => $safeconfig, 'str' => array($stringhelper, 'str'), 'quote' => array($quotehelper, 'quote'), 'js' => array($jshelper, 'help'), 'pix' => array($pixhelper, 'pix'));
$this->mustache = new Mustache_Engine(array('cache' => $cachedir, 'escape' => 's', 'loader' => $loader, 'helpers' => $helpers, 'pragmas' => [Mustache_Engine::PRAGMA_BLOCKS]));
}
return $this->mustache;
}
/**
* Return an instance of the mustache class.
*
* @since 2.9
* @return Mustache_Engine
*/
protected function get_mustache()
{
global $CFG;
if ($this->mustache === null) {
require_once $CFG->dirroot . '/lib/mustache/src/Mustache/Autoloader.php';
Mustache_Autoloader::register();
$themename = $this->page->theme->name;
$themerev = theme_get_revision();
$cachedir = make_localcache_directory("mustache/{$themerev}/{$themename}");
$loader = new \core\output\mustache_filesystem_loader();
$stringhelper = new \core\output\mustache_string_helper();
$jshelper = new \core\output\mustache_javascript_helper($this->page->requires);
$pixhelper = new \core\output\mustache_pix_helper($this);
// We only expose the variables that are exposed to JS templates.
$safeconfig = $this->page->requires->get_config_for_javascript($this->page, $this);
$helpers = array('config' => $safeconfig, 'str' => array($stringhelper, 'str'), 'js' => array($jshelper, 'help'), 'pix' => array($pixhelper, 'pix'));
$this->mustache = new Mustache_Engine(array('cache' => $cachedir, 'escape' => 's', 'loader' => $loader, 'helpers' => $helpers));
}
return $this->mustache;
}
public function test_localcachedir()
{
global $CFG;
$this->resetAfterTest(true);
// Test default location - can not be modified in phpunit tests because we override everything in config.php.
$this->assertSame("{$CFG->dataroot}/localcache", $CFG->localcachedir);
$this->setCurrentTimeStart();
$timestampfile = "{$CFG->localcachedir}/.lastpurged";
// Delete existing localcache directory, as this is testing first call
// to make_localcache_directory.
remove_dir($CFG->localcachedir, true);
$dir = make_localcache_directory('', false);
$this->assertSame($CFG->localcachedir, $dir);
$this->assertFileNotExists("{$CFG->localcachedir}/.htaccess");
$this->assertFileExists($timestampfile);
$this->assertTimeCurrent(filemtime($timestampfile));
$dir = make_localcache_directory('test/test', false);
$this->assertSame("{$CFG->localcachedir}/test/test", $dir);
// Test custom location.
$CFG->localcachedir = "{$CFG->dataroot}/testlocalcache";
$this->setCurrentTimeStart();
$timestampfile = "{$CFG->localcachedir}/.lastpurged";
$this->assertFileNotExists($timestampfile);
$dir = make_localcache_directory('', false);
$this->assertSame($CFG->localcachedir, $dir);
$this->assertFileExists("{$CFG->localcachedir}/.htaccess");
$this->assertFileExists($timestampfile);
$this->assertTimeCurrent(filemtime($timestampfile));
$dir = make_localcache_directory('test', false);
$this->assertSame("{$CFG->localcachedir}/test", $dir);
$prevtime = filemtime($timestampfile);
$dir = make_localcache_directory('pokus', false);
$this->assertSame("{$CFG->localcachedir}/pokus", $dir);
$this->assertSame($prevtime, filemtime($timestampfile));
// Test purging.
$testfile = "{$CFG->localcachedir}/test/test.txt";
$this->assertTrue(touch($testfile));
$now = $this->setCurrentTimeStart();
set_config('localcachedirpurged', $now - 2);
purge_all_caches();
$this->assertFileNotExists($testfile);
$this->assertFileNotExists(dirname($testfile));
$this->assertFileExists($timestampfile);
$this->assertTimeCurrent(filemtime($timestampfile));
$this->assertTimeCurrent($CFG->localcachedirpurged);
// Simulates purge_all_caches() on another server node.
make_localcache_directory('test', false);
$this->assertTrue(touch($testfile));
set_config('localcachedirpurged', $now - 1);
$this->assertTrue(touch($timestampfile, $now - 2));
clearstatcache();
$this->assertSame($now - 2, filemtime($timestampfile));
$this->setCurrentTimeStart();
$dir = make_localcache_directory('', false);
$this->assertSame("{$CFG->localcachedir}", $dir);
$this->assertFileNotExists($testfile);
$this->assertFileNotExists(dirname($testfile));
$this->assertFileExists($timestampfile);
$this->assertTimeCurrent(filemtime($timestampfile));
}
/**
* Invalidates browser caches and cached data in temp.
*
* IMPORTANT - If you are adding anything here to do with the cache directory you should also have a look at
* {@link phpunit_util::reset_dataroot()}
*
* @return void
*/
function purge_all_caches()
{
global $CFG, $DB;
reset_text_filters_cache();
js_reset_all_caches();
theme_reset_all_caches();
get_string_manager()->reset_caches();
core_text::reset_caches();
if (class_exists('core_plugin_manager')) {
core_plugin_manager::reset_caches();
}
// Bump up cacherev field for all courses.
try {
increment_revision_number('course', 'cacherev', '');
} catch (moodle_exception $e) {
// Ignore exception since this function is also called before upgrade script when field course.cacherev does not exist yet.
}
$DB->reset_caches();
cache_helper::purge_all();
// Purge all other caches: rss, simplepie, etc.
clearstatcache();
remove_dir($CFG->cachedir . '', true);
// Make sure cache dir is writable, throws exception if not.
make_cache_directory('');
// This is the only place where we purge local caches, we are only adding files there.
// The $CFG->localcachedirpurged flag forces local directories to be purged on cluster nodes.
remove_dir($CFG->localcachedir, true);
set_config('localcachedirpurged', time());
make_localcache_directory('', true);
\core\task\manager::clear_static_caches();
}
/**
* Install core moodle tables and initialize
* @param float $version target version
* @param bool $verbose
* @return void, may throw exception
*/
function install_core($version, $verbose) {
global $CFG, $DB;
// We can not call purge_all_caches() yet, make sure the temp and cache dirs exist and are empty.
remove_dir($CFG->cachedir.'', true);
make_cache_directory('', true);
remove_dir($CFG->localcachedir.'', true);
make_localcache_directory('', true);
remove_dir($CFG->tempdir.'', true);
make_temp_directory('', true);
remove_dir($CFG->dataroot.'/muc', true);
make_writable_directory($CFG->dataroot.'/muc', true);
try {
core_php_time_limit::raise(600);
print_upgrade_part_start('moodle', true, $verbose); // does not store upgrade running flag
$DB->get_manager()->install_from_xmldb_file("$CFG->libdir/db/install.xml");
upgrade_started(); // we want the flag to be stored in config table ;-)
// set all core default records and default settings
require_once("$CFG->libdir/db/install.php");
xmldb_main_install(); // installs the capabilities too
// store version
upgrade_main_savepoint(true, $version, false);
// Continue with the installation
log_update_descriptions('moodle');
external_update_descriptions('moodle');
events_update_definition('moodle');
\core\task\manager::reset_scheduled_tasks_for_component('moodle');
message_update_providers('moodle');
\core\message\inbound\manager::update_handlers_for_component('moodle');
// Write default settings unconditionally
admin_apply_default_settings(NULL, true);
print_upgrade_part_end(null, true, $verbose);
// Purge all caches. They're disabled but this ensures that we don't have any persistent data just in case something
// during installation didn't use APIs.
cache_helper::purge_all();
} catch (exception $ex) {
upgrade_handle_exception($ex);
}
}
/**
* KSES replacement cleaning function - uses HTML Purifier.
*
* @param string $text The (X)HTML string to purify
* @param array $options Array of options; currently only option supported is 'allowid' (if set,
* does not remove id attributes when cleaning)
* @return string
*/
function purify_html($text, $options = array())
{
global $CFG;
$text = (string) $text;
static $purifiers = array();
static $caches = array();
// Purifier code can change only during major version upgrade.
$version = empty($CFG->version) ? 0 : $CFG->version;
$cachedir = "{$CFG->localcachedir}/htmlpurifier/{$version}";
if (!file_exists($cachedir)) {
// Purging of caches may remove the cache dir at any time,
// luckily file_exists() results should be cached for all existing directories.
$purifiers = array();
$caches = array();
gc_collect_cycles();
make_localcache_directory('htmlpurifier', false);
check_dir_exists($cachedir);
}
$allowid = empty($options['allowid']) ? 0 : 1;
$allowobjectembed = empty($CFG->allowobjectembed) ? 0 : 1;
$type = 'type_' . $allowid . '_' . $allowobjectembed;
if (!array_key_exists($type, $caches)) {
$caches[$type] = cache::make('core', 'htmlpurifier', array('type' => $type));
}
$cache = $caches[$type];
// Add revision number and all options to the text key so that it is compatible with local cluster node caches.
$key = "|{$version}|{$allowobjectembed}|{$allowid}|{$text}";
$filteredtext = $cache->get($key);
if ($filteredtext === true) {
// The filtering did not change the text last time, no need to filter anything again.
return $text;
} else {
if ($filteredtext !== false) {
return $filteredtext;
}
}
if (empty($purifiers[$type])) {
require_once $CFG->libdir . '/htmlpurifier/HTMLPurifier.safe-includes.php';
require_once $CFG->libdir . '/htmlpurifier/locallib.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('HTML.DefinitionID', 'moodlehtml');
$config->set('HTML.DefinitionRev', 2);
$config->set('Cache.SerializerPath', $cachedir);
$config->set('Cache.SerializerPermissions', $CFG->directorypermissions);
$config->set('Core.NormalizeNewlines', false);
$config->set('Core.ConvertDocumentToFragment', true);
$config->set('Core.Encoding', 'UTF-8');
$config->set('HTML.Doctype', 'XHTML 1.0 Transitional');
$config->set('URI.AllowedSchemes', array('http' => true, 'https' => true, 'ftp' => true, 'irc' => true, 'nntp' => true, 'news' => true, 'rtsp' => true, 'rtmp' => true, 'teamspeak' => true, 'gopher' => true, 'mms' => true, 'mailto' => true));
$config->set('Attr.AllowedFrameTargets', array('_blank'));
if ($allowobjectembed) {
$config->set('HTML.SafeObject', true);
$config->set('Output.FlashCompat', true);
$config->set('HTML.SafeEmbed', true);
}
if ($allowid) {
$config->set('Attr.EnableID', true);
}
if ($def = $config->maybeGetRawHTMLDefinition()) {
$def->addElement('nolink', 'Block', 'Flow', array());
// Skip our filters inside.
$def->addElement('tex', 'Inline', 'Inline', array());
// Tex syntax, equivalent to $$xx$$.
$def->addElement('algebra', 'Inline', 'Inline', array());
// Algebra syntax, equivalent to @@xx@@.
$def->addElement('lang', 'Block', 'Flow', array(), array('lang' => 'CDATA'));
// Original multilang style - only our hacked lang attribute.
$def->addAttribute('span', 'xxxlang', 'CDATA');
// Current very problematic multilang.
}
$purifier = new HTMLPurifier($config);
$purifiers[$type] = $purifier;
} else {
$purifier = $purifiers[$type];
}
$multilang = strpos($text, 'class="multilang"') !== false;
$filteredtext = $text;
if ($multilang) {
$filteredtextregex = '/<span(\\s+lang="([a-zA-Z0-9_-]+)"|\\s+class="multilang"){2}\\s*>/';
$filteredtext = preg_replace($filteredtextregex, '<span xxxlang="${2}">', $filteredtext);
}
$filteredtext = (string) $purifier->purify($filteredtext);
if ($multilang) {
$filteredtext = preg_replace('/<span xxxlang="([a-zA-Z0-9_-]+)">/', '<span lang="${1}" class="multilang">', $filteredtext);
}
if ($text === $filteredtext) {
// No need to store the filtered text, next time we will just return unfiltered text
// because it was not changed by purifying.
$cache->set($key, true);
} else {
$cache->set($key, $filteredtext);
}
return $filteredtext;
}
/**
* Purge dataroot directory
* @static
* @return void
*/
public static function reset_dataroot()
{
global $CFG;
$childclassname = self::get_framework() . '_util';
// Do not delete automatically installed files.
self::skip_original_data_files($childclassname);
// Clear file status cache, before checking file_exists.
clearstatcache();
// Clean up the dataroot folder.
$handle = opendir(self::get_dataroot());
while (false !== ($item = readdir($handle))) {
if (in_array($item, $childclassname::$datarootskiponreset)) {
continue;
}
if (is_dir(self::get_dataroot() . "/{$item}")) {
remove_dir(self::get_dataroot() . "/{$item}", false);
} else {
unlink(self::get_dataroot() . "/{$item}");
}
}
closedir($handle);
// Clean up the dataroot/filedir folder.
if (file_exists(self::get_dataroot() . '/filedir')) {
$handle = opendir(self::get_dataroot() . '/filedir');
while (false !== ($item = readdir($handle))) {
if (in_array('filedir/' . $item, $childclassname::$datarootskiponreset)) {
continue;
}
if (is_dir(self::get_dataroot() . "/filedir/{$item}")) {
remove_dir(self::get_dataroot() . "/filedir/{$item}", false);
} else {
unlink(self::get_dataroot() . "/filedir/{$item}");
}
}
closedir($handle);
}
make_temp_directory('');
make_cache_directory('');
make_localcache_directory('');
// Reset the cache API so that it recreates it's required directories as well.
cache_factory::reset();
// Purge all data from the caches. This is required for consistency.
// Any file caches that happened to be within the data root will have already been clearer (because we just deleted cache)
// and now we will purge any other caches as well.
cache_helper::purge_all();
}
if ($rev > 0 and file_exists($candidate)) {
if (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
// we do not actually need to verify the etag value because our files
// never change in cache because we increment the rev parameter
js_send_unmodified(filemtime($candidate), $etag);
}
js_send_cached($candidate, $etag);
}
//=================================================================================
// ok, now we need to start normal moodle script, we need to load all libs and $DB
define('ABORT_AFTER_CONFIG_CANCEL', true);
define('NO_MOODLE_COOKIES', true);
// Session not used here
define('NO_UPGRADE_CHECK', true);
// Ignore upgrade check
require "{$CFG->dirroot}/lib/setup.php";
$theme = theme_config::load($themename);
$themerev = theme_get_revision();
if ($themerev <= 0 or $rev != $themerev) {
// Do not send caching headers if they do not request current revision,
// we do not want to pollute browser caches with outdated JS.
js_send_uncached($theme->javascript_content($type));
}
make_localcache_directory('theme', false);
js_write_cache_file_content($candidate, core_minify::js_files($theme->javascript_files($type)));
// Verify nothing failed in cache file creation.
clearstatcache();
if (file_exists($candidate)) {
js_send_cached($candidate, $etag);
}
js_send_uncached($theme->javascript_content($type));
/**
* Return an instance of the mustache class.
*
* @since 2.9
* @return Mustache_Engine
*/
protected function get_mustache()
{
global $CFG;
if ($this->mustache === null) {
require_once $CFG->dirroot . '/lib/mustache/src/Mustache/Autoloader.php';
Mustache_Autoloader::register();
$themename = $this->page->theme->name;
$themerev = theme_get_revision();
$target = $this->target;
$cachedir = make_localcache_directory("mustache/{$themerev}/{$themename}/{$target}");
$loaderoptions = array();
// Where are all the places we should look for templates?
$suffix = $this->component;
if ($this->subtype !== null) {
$suffix .= '_' . $this->subtype;
}
// Start with an empty list.
$loader = new Mustache_Loader_CascadingLoader(array());
$loaderdir = $CFG->dirroot . '/theme/' . $themename . '/templates/' . $suffix;
if (is_dir($loaderdir)) {
$loader->addLoader(new \core\output\mustache_filesystem_loader($loaderdir, $loaderoptions));
}
// Search each of the parent themes second.
foreach ($this->page->theme->parents as $parent) {
$loaderdir = $CFG->dirroot . '/theme/' . $parent . '/templates/' . $suffix;
if (is_dir($loaderdir)) {
$loader->addLoader(new \core\output\mustache_filesystem_loader($loaderdir, $loaderoptions));
}
}
// Look in a components templates dir for a base implementation.
$compdirectory = core_component::get_component_directory($suffix);
if ($compdirectory) {
$loaderdir = $compdirectory . '/templates';
if (is_dir($loaderdir)) {
$loader->addLoader(new \core\output\mustache_filesystem_loader($loaderdir, $loaderoptions));
}
}
// Look in the core templates dir as a final fallback.
$compdirectory = $CFG->libdir;
if ($compdirectory) {
$loaderdir = $compdirectory . '/templates';
if (is_dir($loaderdir)) {
$loader->addLoader(new \core\output\mustache_filesystem_loader($loaderdir, $loaderoptions));
}
}
$stringhelper = new \core\output\mustache_string_helper();
$jshelper = new \core\output\mustache_javascript_helper($this->page->requires);
$pixhelper = new \core\output\mustache_pix_helper($this);
// We only expose the variables that are exposed to JS templates.
$safeconfig = $this->page->requires->get_config_for_javascript($this->page, $this);
$helpers = array('config' => $safeconfig, 'str' => array($stringhelper, 'str'), 'js' => array($jshelper, 'help'), 'pix' => array($pixhelper, 'pix'));
$this->mustache = new Mustache_Engine(array('cache' => $cachedir, 'escape' => 's', 'loader' => $loader, 'helpers' => $helpers));
}
return $this->mustache;
}
/**
* Purge dataroot directory
* @static
* @return void
*/
public static function reset_dataroot()
{
global $CFG;
$childclassname = self::get_framework() . '_util';
$handle = opendir($CFG->dataroot);
while (false !== ($item = readdir($handle))) {
if (in_array($item, $childclassname::$datarootskiponreset)) {
continue;
}
if (is_dir("{$CFG->dataroot}/{$item}")) {
remove_dir("{$CFG->dataroot}/{$item}", false);
} else {
unlink("{$CFG->dataroot}/{$item}");
}
}
closedir($handle);
make_temp_directory('');
make_cache_directory('');
make_localcache_directory('');
// Reset the cache API so that it recreates it's required directories as well.
cache_factory::reset();
// Purge all data from the caches. This is required for consistency.
// Any file caches that happened to be within the data root will have already been clearer (because we just deleted cache)
// and now we will purge any other caches as well.
cache_helper::purge_all();
}
/**
* KSES replacement cleaning function - uses HTML Purifier.
*
* @param string $text The (X)HTML string to purify
* @param array $options Array of options; currently only option supported is 'allowid' (if set,
* does not remove id attributes when cleaning)
* @return string
*/
function purify_html($text, $options = array()) {
global $CFG;
$text = (string)$text;
static $purifiers = array();
static $caches = array();
// Purifier code can change only during major version upgrade.
$version = empty($CFG->version) ? 0 : $CFG->version;
$cachedir = "$CFG->localcachedir/htmlpurifier/$version";
if (!file_exists($cachedir)) {
// Purging of caches may remove the cache dir at any time,
// luckily file_exists() results should be cached for all existing directories.
$purifiers = array();
$caches = array();
gc_collect_cycles();
make_localcache_directory('htmlpurifier', false);
check_dir_exists($cachedir);
}
$allowid = empty($options['allowid']) ? 0 : 1;
$allowobjectembed = empty($CFG->allowobjectembed) ? 0 : 1;
$type = 'type_'.$allowid.'_'.$allowobjectembed;
if (!array_key_exists($type, $caches)) {
$caches[$type] = cache::make('core', 'htmlpurifier', array('type' => $type));
}
$cache = $caches[$type];
// Add revision number and all options to the text key so that it is compatible with local cluster node caches.
$key = "|$version|$allowobjectembed|$allowid|$text";
$filteredtext = $cache->get($key);
if ($filteredtext === true) {
// The filtering did not change the text last time, no need to filter anything again.
return $text;
} else if ($filteredtext !== false) {
return $filteredtext;
}
if (empty($purifiers[$type])) {
require_once $CFG->libdir.'/htmlpurifier/HTMLPurifier.safe-includes.php';
require_once $CFG->libdir.'/htmlpurifier/locallib.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('HTML.DefinitionID', 'moodlehtml');
$config->set('HTML.DefinitionRev', 6);
$config->set('Cache.SerializerPath', $cachedir);
$config->set('Cache.SerializerPermissions', $CFG->directorypermissions);
$config->set('Core.NormalizeNewlines', false);
$config->set('Core.ConvertDocumentToFragment', true);
$config->set('Core.Encoding', 'UTF-8');
$config->set('HTML.Doctype', 'XHTML 1.0 Transitional');
$config->set('URI.AllowedSchemes', array(
'http' => true,
'https' => true,
'ftp' => true,
'irc' => true,
'nntp' => true,
'news' => true,
'rtsp' => true,
'rtmp' => true,
'teamspeak' => true,
'gopher' => true,
'mms' => true,
'mailto' => true
));
$config->set('Attr.AllowedFrameTargets', array('_blank'));
if ($allowobjectembed) {
$config->set('HTML.SafeObject', true);
$config->set('Output.FlashCompat', true);
$config->set('HTML.SafeEmbed', true);
}
if ($allowid) {
$config->set('Attr.EnableID', true);
}
if ($def = $config->maybeGetRawHTMLDefinition()) {
$def->addElement('nolink', 'Block', 'Flow', array()); // Skip our filters inside.
$def->addElement('tex', 'Inline', 'Inline', array()); // Tex syntax, equivalent to $$xx$$.
$def->addElement('algebra', 'Inline', 'Inline', array()); // Algebra syntax, equivalent to @@xx@@.
$def->addElement('lang', 'Block', 'Flow', array(), array('lang'=>'CDATA')); // Original multilang style - only our hacked lang attribute.
$def->addAttribute('span', 'xxxlang', 'CDATA'); // Current very problematic multilang.
// Media elements.
// https://html.spec.whatwg.org/#the-video-element
$def->addElement('video', 'Block', 'Optional: #PCDATA | Flow | source | track', 'Common', [
'src' => 'URI',
'crossorigin' => 'Enum#anonymous,use-credentials',
'poster' => 'URI',
'preload' => 'Enum#auto,metadata,none',
'autoplay' => 'Bool',
'playsinline' => 'Bool',
'loop' => 'Bool',
'muted' => 'Bool',
'controls' => 'Bool',
'width' => 'Length',
'height' => 'Length',
]);
// https://html.spec.whatwg.org/#the-audio-element
$def->addElement('audio', 'Block', 'Optional: #PCDATA | Flow | source | track', 'Common', [
'src' => 'URI',
'crossorigin' => 'Enum#anonymous,use-credentials',
'preload' => 'Enum#auto,metadata,none',
'autoplay' => 'Bool',
'loop' => 'Bool',
'muted' => 'Bool',
'controls' => 'Bool'
]);
// https://html.spec.whatwg.org/#the-source-element
$def->addElement('source', false, 'Empty', null, [
'src' => 'URI',
'type' => 'Text'
]);
// https://html.spec.whatwg.org/#the-track-element
$def->addElement('track', false, 'Empty', null, [
'src' => 'URI',
'kind' => 'Enum#subtitles,captions,descriptions,chapters,metadata',
'srclang' => 'Text',
'label' => 'Text',
'default' => 'Bool',
]);
// Use the built-in Ruby module to add annotation support.
$def->manager->addModule(new HTMLPurifier_HTMLModule_Ruby());
}
$purifier = new HTMLPurifier($config);
$purifiers[$type] = $purifier;
} else {
$purifier = $purifiers[$type];
}
$multilang = (strpos($text, 'class="multilang"') !== false);
$filteredtext = $text;
if ($multilang) {
$filteredtextregex = '/<span(\s+lang="([a-zA-Z0-9_-]+)"|\s+class="multilang"){2}\s*>/';
$filteredtext = preg_replace($filteredtextregex, '<span xxxlang="${2}">', $filteredtext);
}
$filteredtext = (string)$purifier->purify($filteredtext);
if ($multilang) {
$filteredtext = preg_replace('/<span xxxlang="([a-zA-Z0-9_-]+)">/', '<span lang="${1}" class="multilang">', $filteredtext);
}
if ($text === $filteredtext) {
// No need to store the filtered text, next time we will just return unfiltered text
// because it was not changed by purifying.
$cache->set($key, true);
} else {
$cache->set($key, $filteredtext);
}
return $filteredtext;
}
