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<?php |
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namespace EZAMA; |
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class HtmlStrip extends HtmlStripHelper |
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{ |
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protected $type; |
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public function __construct($html, $type = 'replace', $notAllowedTags = ['', false], $notAllowedAttributes = ['', false]) |
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{ |
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$callback = function ($v) { |
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return trim(strtolower($v)); |
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}; |
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if (!$this->handleTags($notAllowedTags, $callback, function ($v) { |
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return isset(self::$tags[$v]); |
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})) { |
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$this->allowedTags = self::$tags; |
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} |
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if (!$this->handleAttributes($notAllowedAttributes, $callback, function ($v) { |
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return isset(self::$attributes[$v]); |
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})) { |
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$this->allowedAttributes = self::$attributes; |
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} |
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$this->type = !is_string($type) || !in_array($tmp = strtolower(trim($type)), ['remove', 'replace']) ? 'remove' : $tmp; |
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$bs = new BeforeStrip($html); |
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$this->is_html = $bs->isHtml(); |
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$this->is_php = $bs->isPHP(); |
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$bs = new PrepareStrip($bs); |
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$this->loadHTML($bs->getPrepared()); |
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} |
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public function go($type = self::TAGS) |
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{ |
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switch ($type) { |
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case self::TAGS_AND_ATTRIBUTES: |
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return self::strip($this->html, $this->type, $this->allowedTags, $this->allowedAttributes, $this->is_php); |
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break; |
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case self::TAGS_WITH_ATTRIBUTES: |
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return self::stripTagsWithAttributes($this->html, $this->allowedTags, $this->allowedAttributes, $this->is_php); |
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break; |
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case self::TAGS: |
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return self::strip($this->html, $this->type, $this->allowedTags, self::$attributes, $this->is_php); |
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break; |
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case self::ATTRIBUTES: |
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return self::strip($this->html, $this->type, self::$tags, $this->allowedAttributes, $this->is_php); |
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break; |
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default: |
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throw new invalidArgumentException('unexpected strip type'); |
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break; |
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} |
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} |
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protected static function strip($domDoc, $type, $allowed_tags, $allowed_attrs, $is_php) |
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{ |
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$firstDiv = 0; |
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if (count(self::$tags) > count($allowed_tags) || count(self::$attributes) > count($allowed_attrs)) { |
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foreach (new DOMNodeRecursiveIterator($domDoc->getElementsByTagName('*'))as $tag) { |
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if (!isset($allowed_tags['<' . $tag->tagName . '>'])) { |
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if (self::skipUsefull($tag, $firstDiv)) { |
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continue; |
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} |
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self::replaceOrRemove($tag, $type); |
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} else { |
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self::stripAttributes($tag, $allowed_attrs); |
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} |
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} |
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self::handleComments($domDoc, $allowed_tags); |
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} |
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return self::handlePhp($is_php, $domDoc, $allowed_tags); |
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} |
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protected static function skipUsefull($tag, &$firstDiv) |
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{ |
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if ($tag->tagName === 'div' && !$firstDiv) { |
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$firstDiv++; |
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return true; |
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} |
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if ($tag->tagName === 'doctypetag') { |
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return true; |
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} |
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} |
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private static function replaceOrRemove($tag, $type) |
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{ |
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if ($type === 'remove') { |
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$tag->parentNode->removeChild($tag); |
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} else { |
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if (!in_array(strtolower($tag->tagName), ['php', 'style', 'script'])) { |
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$elem = $tag->parentNode; |
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$childNodes = $tag->childNodes; |
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while ($childNodes->length > 0) { |
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$elem->insertBefore($childNodes->item(0), $tag); |
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} |
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$elem->removeChild($tag); |
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} else { |
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$tag->parentNode->removeChild($tag); |
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} |
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} |
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} |
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protected static function stripTagsWithAttributes($domDoc, &$allowed_tags, &$allowed_attrs, $is_php) |
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{ |
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if (count(self::$attributes) > count($allowed_attrs)) { |
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foreach (new DOMNodeRecursiveIterator($domDoc->getElementsByTagName('*'))as $tag) { |
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self::stripAttributes($tag, $allowed_attrs, 2); |
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} |
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} |
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return self::handlePhp($is_php, $domDoc, $allowed_tags); |
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} |
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public static function getEventsAttributes() |
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{ |
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return array_keys(self::$events_attributes); |
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} |
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public static function getAttributes() |
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{ |
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return array_keys(self::$attributes); |
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} |
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public static function getTags() |
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{ |
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return array_keys(self::$tags); |
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} |
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} |
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manuwhat /
strip-tags
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The
breakstatement is not necessary if it is preceded for example by areturnstatement:If you would like to keep this construct to be consistent with other
casestatements, you can safely mark this issue as a false-positive.