1461 lines
35 KiB
PHP
1461 lines
35 KiB
PHP
<?php namespace simplehtmldom;
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/**
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* Website: http://sourceforge.net/projects/simplehtmldom/
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* Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/)
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*
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* Licensed under The MIT License
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* See the LICENSE file in the project root for more information.
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*
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* Authors:
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* S.C. Chen
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* John Schlick
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* Rus Carroll
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* logmanoriginal
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*
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* Contributors:
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* Yousuke Kumakura
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* Vadim Voituk
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* Antcs
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*
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* Version $Rev$
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*/
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include_once 'constants.php';
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include_once 'Debug.php';
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class HtmlNode
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{
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const HDOM_TYPE_ELEMENT = 1;
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const HDOM_TYPE_COMMENT = 2;
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const HDOM_TYPE_TEXT = 3;
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const HDOM_TYPE_ROOT = 5;
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const HDOM_TYPE_UNKNOWN = 6;
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const HDOM_TYPE_CDATA = 7;
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const HDOM_QUOTE_DOUBLE = 0;
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const HDOM_QUOTE_SINGLE = 1;
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const HDOM_QUOTE_NO = 3;
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const HDOM_INFO_BEGIN = 0;
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const HDOM_INFO_END = 1;
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const HDOM_INFO_QUOTE = 2;
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const HDOM_INFO_SPACE = 3;
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const HDOM_INFO_TEXT = 4;
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const HDOM_INFO_INNER = 5;
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const HDOM_INFO_OUTER = 6;
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const HDOM_INFO_ENDSPACE = 7;
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public $nodetype = self::HDOM_TYPE_TEXT;
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public $tag = 'text';
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public $attr = array();
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public $children = array();
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public $nodes = array();
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public $parent = null;
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public $_ = array();
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private $dom = null;
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function __call($func, $args)
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{
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// Allow users to call methods with lower_case syntax
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switch($func)
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{
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case 'children':
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$actual_function = 'childNodes'; break;
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case 'first_child':
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$actual_function = 'firstChild'; break;
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case 'has_child':
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$actual_function = 'hasChildNodes'; break;
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case 'last_child':
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$actual_function = 'lastChild'; break;
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case 'next_sibling':
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$actual_function = 'nextSibling'; break;
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case 'prev_sibling':
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$actual_function = 'previousSibling'; break;
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default:
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trigger_error(
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'Call to undefined method ' . __CLASS__ . '::' . $func . '()',
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E_USER_ERROR
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);
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}
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// phpcs:ignore Generic.Files.LineLength
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Debug::log(__CLASS__ . '->' . $func . '() has been deprecated and will be removed in the next major version of simplehtmldom. Use ' . __CLASS__ . '->' . $actual_function . '() instead.');
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return call_user_func_array(array($this, $actual_function), $args);
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}
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function __construct($dom)
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{
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if ($dom instanceof HtmlDocument)
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{
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$this->dom = $dom;
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$dom->nodes[] = $this;
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}
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}
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function __debugInfo()
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{
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// Translate node type to human-readable form
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switch($this->nodetype)
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{
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case self::HDOM_TYPE_ELEMENT:
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$nodetype = "HDOM_TYPE_ELEMENT ($this->nodetype)";
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break;
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case self::HDOM_TYPE_COMMENT:
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$nodetype = "HDOM_TYPE_COMMENT ($this->nodetype)";
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break;
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case self::HDOM_TYPE_TEXT:
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$nodetype = "HDOM_TYPE_TEXT ($this->nodetype)";
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break;
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case self::HDOM_TYPE_ROOT:
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$nodetype = "HDOM_TYPE_ROOT ($this->nodetype)";
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break;
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case self::HDOM_TYPE_CDATA:
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$nodetype = "HDOM_TYPE_CDATA ($this->nodetype)";
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break;
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case self::HDOM_TYPE_UNKNOWN:
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default:
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$nodetype = "HDOM_TYPE_UNKNOWN ($this->nodetype)";
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}
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return array(
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'nodetype' => $nodetype,
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'tag' => $this->tag,
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'attributes' => empty($this->attr) ? 'none' : $this->attr,
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'nodes' => empty($this->nodes) ? 'none' : $this->nodes
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);
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}
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function __toString()
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{
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return $this->outertext();
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}
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function clear()
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{
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unset($this->dom); // Break link to origin
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unset($this->parent); // Break link to branch
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}
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/** @codeCoverageIgnore */
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function dump($show_attr = true, $depth = 0)
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{
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echo str_repeat("\t", $depth) . $this->tag;
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if ($show_attr && count($this->attr) > 0) {
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echo '(';
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foreach ($this->attr as $k => $v) {
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echo "[$k]=>\"$v\", ";
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}
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echo ')';
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}
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echo "\n";
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if ($this->nodes) {
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foreach ($this->nodes as $node) {
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$node->dump($show_attr, $depth + 1);
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}
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}
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}
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/** @codeCoverageIgnore */
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function dump_node($echo = true)
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{
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$string = $this->tag;
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if (count($this->attr) > 0) {
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$string .= '(';
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foreach ($this->attr as $k => $v) {
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$string .= "[$k]=>\"$v\", ";
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}
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$string .= ')';
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}
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if (count($this->_) > 0) {
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$string .= ' $_ (';
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foreach ($this->_ as $k => $v) {
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if (is_array($v)) {
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$string .= "[$k]=>(";
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foreach ($v as $k2 => $v2) {
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$string .= "[$k2]=>\"$v2\", ";
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}
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$string .= ')';
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} else {
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$string .= "[$k]=>\"$v\", ";
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}
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}
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$string .= ')';
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}
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if (isset($this->text)) {
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$string .= " text: ($this->text)";
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}
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$string .= ' HDOM_INNER_INFO: ';
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if (isset($node->_[self::HDOM_INFO_INNER])) {
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$string .= "'" . $node->_[self::HDOM_INFO_INNER] . "'";
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} else {
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$string .= ' NULL ';
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}
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$string .= ' children: ' . count($this->children);
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$string .= ' nodes: ' . count($this->nodes);
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$string .= "\n";
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if ($echo) {
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echo $string;
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return;
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} else {
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return $string;
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}
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}
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function parent($parent = null)
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{
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// I am SURE that this doesn't work properly.
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// It fails to unset the current node from its current parents nodes or
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// children list first.
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if ($parent !== null) {
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$this->parent = $parent;
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$this->parent->nodes[] = $this;
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$this->parent->children[] = $this;
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}
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return $this->parent;
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}
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function find_ancestor_tag($tag)
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{
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if ($this->parent === null) return null;
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$ancestor = $this->parent;
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while (!is_null($ancestor)) {
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if ($ancestor->tag === $tag) {
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break;
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}
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$ancestor = $ancestor->parent;
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}
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return $ancestor;
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}
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function innertext()
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{
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if (isset($this->_[self::HDOM_INFO_INNER])) {
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$ret = $this->_[self::HDOM_INFO_INNER];
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} elseif (isset($this->_[self::HDOM_INFO_TEXT])) {
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$ret = $this->_[self::HDOM_INFO_TEXT];
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} else {
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$ret = '';
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}
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foreach ($this->nodes as $n) {
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$ret .= $n->outertext();
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}
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return $this->convert_text($ret);
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}
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function outertext()
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{
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if ($this->tag === 'root') {
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return $this->innertext();
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}
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// todo: What is the use of this callback? Remove?
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if ($this->dom && $this->dom->callback !== null) {
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call_user_func_array($this->dom->callback, array($this));
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}
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if (isset($this->_[self::HDOM_INFO_OUTER])) {
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return $this->convert_text($this->_[self::HDOM_INFO_OUTER]);
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}
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if (isset($this->_[self::HDOM_INFO_TEXT])) {
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return $this->convert_text($this->_[self::HDOM_INFO_TEXT]);
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}
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$ret = '';
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if (isset($this->_[self::HDOM_INFO_BEGIN])) {
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$ret = $this->makeup();
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}
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if (isset($this->_[self::HDOM_INFO_INNER]) && $this->tag !== HtmlElement::BR) {
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if (HtmlElement::isRawTextElement($this->tag)){
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$ret .= $this->_[self::HDOM_INFO_INNER];
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} else {
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if ($this->dom && $this->dom->targetCharset) {
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$charset = $this->dom->targetCharset;
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} else {
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$charset = DEFAULT_TARGET_CHARSET;
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}
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if ($this->dom->enable_htmlentity_operations) {
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$ret .= htmlentities($this->_[self::HDOM_INFO_INNER], ENT_QUOTES | ENT_SUBSTITUTE, $charset);
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} else {
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$ret .= $this->_[self::HDOM_INFO_INNER];
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}
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}
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}
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if ($this->nodes) {
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foreach ($this->nodes as $n) {
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$ret .= $n->outertext();
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}
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}
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if (isset($this->_[self::HDOM_INFO_END]) && $this->_[self::HDOM_INFO_END] != 0) {
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$ret .= '</' . $this->tag . '>';
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}
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return $this->convert_text($ret);
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}
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/**
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* Returns true if the provided element is a block level element
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* @link https://www.w3resource.com/html/HTML-block-level-and-inline-elements.php
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*/
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protected function is_block_element($node)
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{
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return HtmlElement::isPalpableContent($node->tag) &&
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!HtmlElement::isMetadataContent($node->tag) &&
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!HtmlElement::isPhrasingContent($node->tag) &&
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!HtmlElement::isEmbeddedContent($node->tag) &&
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!HtmlElement::isInteractiveContent($node->tag);
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}
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function text($trim = true)
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{
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if (HtmlElement::isRawTextElement($this->tag)) {
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return '';
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}
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$ret = '';
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switch ($this->nodetype) {
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case self::HDOM_TYPE_COMMENT:
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case self::HDOM_TYPE_UNKNOWN:
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return '';
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case self::HDOM_TYPE_TEXT:
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$ret = $this->_[self::HDOM_INFO_TEXT];
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break;
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default:
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if (isset($this->_[self::HDOM_INFO_INNER])) {
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$ret = $this->_[self::HDOM_INFO_INNER];
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}
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break;
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}
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// Replace and collapse whitespace
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$ret = preg_replace('/\s+/u', ' ', $ret);
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// Reduce whitespace at start/end to a single (or none) space
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$ret = preg_replace('/[ \t\n\r\0\x0B\xC2\xA0]+$/u', $trim ? '' : ' ', $ret);
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$ret = preg_replace('/^[ \t\n\r\0\x0B\xC2\xA0]+/u', $trim ? '' : ' ', $ret);
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// TODO: Remove BR_TEXT customization.
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// It has no practical use and only makes the code harder to read.
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if ($this->dom){ // for the root node, ->dom is undefined.
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$br_text = $this->dom->default_br_text ?: DEFAULT_BR_TEXT;
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}
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foreach ($this->nodes as $n) {
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if ($this->is_block_element($n)) {
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$block = $this->convert_text($n->text($trim));
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if ($block === '') {
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$ret = rtrim($ret) . "\n\n";
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continue;
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}
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if ($ret === ''){
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$ret = $block . "\n\n";
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continue;
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}
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$ret = rtrim($ret) . "\n\n" . $block . "\n\n";
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continue;
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}
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if (strtolower($n->tag) === HtmlElement::BR) {
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if ($ret === ''){
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// Don't start with a line break.
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continue;
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}
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$ret .= $br_text;
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continue;
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}
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$text = $this->convert_text($n->text($trim));
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if ($text === ''){
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continue;
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}
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if ($ret === ''){
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$ret = ltrim($text);
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continue;
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}
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if (substr($ret, -1) === "\n" ||
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substr($ret, -1) === ' ' ||
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substr($ret, -strlen($br_text)) === $br_text){
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$ret .= ltrim($text);
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continue;
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}
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$ret .= ' ' . ltrim($text);
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}
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return trim($ret);
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}
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function xmltext()
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{
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$ret = $this->innertext();
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$ret = str_ireplace('<![CDATA[', '', $ret);
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$ret = str_replace(']]>', '', $ret);
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return $ret;
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}
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function makeup()
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{
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// text, comment, unknown
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if (isset($this->_[self::HDOM_INFO_TEXT])) {
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return $this->_[self::HDOM_INFO_TEXT];
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}
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$ret = '<' . $this->tag;
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foreach ($this->attr as $key => $val) {
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// skip removed attribute
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if ($val === null || $val === false) { continue; }
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if (isset($this->_[self::HDOM_INFO_SPACE][$key])) {
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$ret .= $this->_[self::HDOM_INFO_SPACE][$key][0];
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} else {
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$ret .= ' ';
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}
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//no value attr: nowrap, checked selected...
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if ($val === true) {
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$ret .= $key;
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} else {
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if (isset($this->_[self::HDOM_INFO_QUOTE][$key])) {
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$quote_type = $this->_[self::HDOM_INFO_QUOTE][$key];
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} else {
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$quote_type = self::HDOM_QUOTE_DOUBLE;
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}
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switch ($quote_type)
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{
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case self::HDOM_QUOTE_SINGLE:
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$quote = '\'';
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break;
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case self::HDOM_QUOTE_NO:
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if (strpos($val, ' ') !== false ||
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strpos($val, "\t") !== false ||
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strpos($val, "\f") !== false ||
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strpos($val, "\r") !== false ||
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strpos($val, "\n") !== false) {
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$quote = '"';
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} else {
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$quote = '';
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}
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break;
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case self::HDOM_QUOTE_DOUBLE:
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default:
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$quote = '"';
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}
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if ($this->dom->enable_htmlentity_operations) {
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$val = htmlentities($val, ENT_COMPAT, $this->dom->target_charset);
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}
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$ret .= $key
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. (isset($this->_[self::HDOM_INFO_SPACE][$key]) ? $this->_[self::HDOM_INFO_SPACE][$key][1] : '')
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. '='
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. (isset($this->_[self::HDOM_INFO_SPACE][$key]) ? $this->_[self::HDOM_INFO_SPACE][$key][2] : '')
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. $quote
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. $val
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. $quote;
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}
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}
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if(isset($this->_[self::HDOM_INFO_ENDSPACE])) {
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$ret .= $this->_[self::HDOM_INFO_ENDSPACE];
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}
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return $ret . '>';
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}
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function find($selector, $idx = null, $lowercase = false)
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{
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$selectors = $this->parse_selector($selector);
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if (($count = count($selectors)) === 0) { return array(); }
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$found_keys = array();
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for ($c = 0; $c < $count; ++$c) {
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if (($level = count($selectors[$c])) === 0) {
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Debug::log_once('Empty selector (' . $selector . ') matches nothing.');
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return array();
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}
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if (!isset($this->_[self::HDOM_INFO_BEGIN])) {
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Debug::log_once('Invalid operation. The current node has no start tag.');
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return array();
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}
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$head = array($this->_[self::HDOM_INFO_BEGIN] => 1);
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$cmd = ' '; // Combinator
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// handle descendant selectors, no recursive!
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for ($l = 0; $l < $level; ++$l) {
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$ret = array();
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foreach ($head as $k => $v) {
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$n = ($k === -1) ? $this->dom->root : $this->dom->nodes[$k];
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//PaperG - Pass this optional parameter on to the seek function.
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$n->seek($selectors[$c][$l], $ret, $cmd, $lowercase);
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}
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$head = $ret;
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$cmd = $selectors[$c][$l][6]; // Next Combinator
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}
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foreach ($head as $k => $v) {
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if (!isset($found_keys[$k])) {
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$found_keys[$k] = 1;
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}
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}
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}
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// sort keys
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ksort($found_keys);
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$found = array();
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foreach ($found_keys as $k => $v) {
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$found[] = $this->dom->nodes[$k];
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}
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// return nth-element or array
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if (is_null($idx)) { return $found; }
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elseif ($idx < 0) { $idx = count($found) + $idx; }
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return (isset($found[$idx])) ? $found[$idx] : null;
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|
}
|
|
|
|
function expect($selector, $idx = null, $lowercase = false)
|
|
{
|
|
return $this->find($selector, $idx, $lowercase) ?: null;
|
|
}
|
|
|
|
protected function seek($selector, &$ret, $parent_cmd, $lowercase = false)
|
|
{
|
|
list($ps_selector, $tag, $ps_element, $id, $class, $attributes, $cmb) = $selector;
|
|
$nodes = array();
|
|
|
|
if ($parent_cmd === ' ') { // Descendant Combinator
|
|
// Find parent closing tag if the current element doesn't have a closing
|
|
// tag (i.e. void element)
|
|
$end = (!empty($this->_[self::HDOM_INFO_END])) ? $this->_[self::HDOM_INFO_END] : 0;
|
|
if ($end == 0 && $this->parent) {
|
|
$parent = $this->parent;
|
|
while ($parent !== null && !isset($parent->_[self::HDOM_INFO_END])) {
|
|
$end -= 1;
|
|
$parent = $parent->parent;
|
|
}
|
|
$end += $parent->_[self::HDOM_INFO_END];
|
|
}
|
|
|
|
if ($end === 0) {
|
|
$end = count($this->dom->nodes);
|
|
}
|
|
|
|
// Get list of target nodes
|
|
$nodes_start = $this->_[self::HDOM_INFO_BEGIN] + 1;
|
|
|
|
// remove() makes $this->dom->nodes non-contiguous; use what is left.
|
|
$nodes = array_intersect_key(
|
|
$this->dom->nodes,
|
|
array_flip(range($nodes_start, $end))
|
|
);
|
|
} elseif ($parent_cmd === '>') { // Child Combinator
|
|
$nodes = $this->children;
|
|
} elseif ($parent_cmd === '+'
|
|
&& $this->parent
|
|
&& in_array($this, $this->parent->children)) { // Next-Sibling Combinator
|
|
$index = array_search($this, $this->parent->children, true) + 1;
|
|
if ($index < count($this->parent->children))
|
|
$nodes[] = $this->parent->children[$index];
|
|
} elseif ($parent_cmd === '~'
|
|
&& $this->parent
|
|
&& in_array($this, $this->parent->children)) { // Subsequent Sibling Combinator
|
|
$index = array_search($this, $this->parent->children, true);
|
|
$nodes = array_slice($this->parent->children, $index);
|
|
}
|
|
|
|
// Go through each element starting at this element until the end tag
|
|
// Note: If this element is a void tag, any previous void element is
|
|
// skipped.
|
|
foreach($nodes as $node) {
|
|
|
|
// Skip root nodes
|
|
if(!$node->parent) {
|
|
unset($node);
|
|
continue;
|
|
}
|
|
|
|
// Handle 'text' selector
|
|
if($tag === 'text') {
|
|
|
|
if($node->tag === 'text') {
|
|
$ret[array_search($node, $this->dom->nodes, true)] = 1;
|
|
}
|
|
|
|
if(isset($node->_[self::HDOM_INFO_INNER])) {
|
|
$ret[$node->_[self::HDOM_INFO_BEGIN]] = 1;
|
|
}
|
|
|
|
unset($node);
|
|
continue;
|
|
|
|
}
|
|
|
|
// Handle 'cdata' selector
|
|
if($tag === 'cdata') {
|
|
|
|
if($node->tag === 'cdata') {
|
|
$ret[$node->_[self::HDOM_INFO_BEGIN]] = 1;
|
|
}
|
|
|
|
unset($node);
|
|
continue;
|
|
|
|
}
|
|
|
|
// Handle 'comment'
|
|
if($tag === 'comment' && $node->tag === 'comment') {
|
|
$ret[$node->_[self::HDOM_INFO_BEGIN]] = 1;
|
|
unset($node);
|
|
continue;
|
|
}
|
|
|
|
// Skip if node isn't a child node (i.e. text nodes)
|
|
if(!in_array($node, $node->parent->children, true)) {
|
|
unset($node);
|
|
continue;
|
|
}
|
|
|
|
$pass = true;
|
|
|
|
// Skip if tag doesn't match
|
|
if ($tag !== '' && $tag !== $node->tag && $tag !== '*') {
|
|
$pass = false;
|
|
}
|
|
|
|
// Skip if ID doesn't exist
|
|
if ($pass && $id !== '' && !isset($node->attr['id'])) {
|
|
$pass = false;
|
|
}
|
|
|
|
// Check if ID matches
|
|
if ($pass && $id !== '' && isset($node->attr['id'])) {
|
|
// Note: Only consider the first ID (as browsers do)
|
|
$node_id = explode(' ', trim($node->attr['id']))[0];
|
|
|
|
if($id !== $node_id) { $pass = false; }
|
|
}
|
|
|
|
// Check if all class(es) exist
|
|
if ($pass && $class !== '' && is_array($class) && !empty($class)) {
|
|
if (isset($node->attr['class'])) {
|
|
// Apply the same rules for the pattern and attribute value
|
|
// Attribute values must not contain control characters other than space
|
|
// https://www.w3.org/TR/html/dom.html#text-content
|
|
// https://www.w3.org/TR/html/syntax.html#attribute-values
|
|
// https://www.w3.org/TR/xml/#AVNormalize
|
|
$node_classes = preg_replace("/[\r\n\t\s]+/u", ' ', $node->attr['class']);
|
|
$node_classes = trim($node_classes);
|
|
$node_classes = explode(' ', $node_classes);
|
|
|
|
if ($lowercase) {
|
|
$node_classes = array_map('strtolower', $node_classes);
|
|
}
|
|
|
|
foreach($class as $c) {
|
|
if(!in_array($c, $node_classes)) {
|
|
$pass = false;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
$pass = false;
|
|
}
|
|
}
|
|
|
|
// Check attributes
|
|
if ($pass
|
|
&& $attributes !== ''
|
|
&& is_array($attributes)
|
|
&& !empty($attributes)) {
|
|
foreach($attributes as $a) {
|
|
list (
|
|
$att_name,
|
|
$att_expr,
|
|
$att_val,
|
|
$att_inv,
|
|
$att_case_sensitivity
|
|
) = $a;
|
|
|
|
// Handle indexing attributes (i.e. "[2]")
|
|
/**
|
|
* Note: This is not supported by the CSS Standard but adds
|
|
* the ability to select items compatible to XPath (i.e.
|
|
* the 3rd element within it's parent).
|
|
*
|
|
* Note: This doesn't conflict with the CSS Standard which
|
|
* doesn't work on numeric attributes anyway.
|
|
*/
|
|
if (is_numeric($att_name)
|
|
&& $att_expr === ''
|
|
&& $att_val === '') {
|
|
$count = 0;
|
|
|
|
// Find index of current element in parent
|
|
foreach ($node->parent->children as $c) {
|
|
if ($c->tag === $node->tag) ++$count;
|
|
if ($c === $node) break;
|
|
}
|
|
|
|
// If this is the correct node, continue with next
|
|
// attribute
|
|
if ($count === (int)$att_name) continue;
|
|
}
|
|
|
|
// Check attribute availability
|
|
if ($att_inv) { // Attribute should NOT be set
|
|
if (isset($node->attr[$att_name])) {
|
|
$pass = false;
|
|
break;
|
|
}
|
|
} else { // Attribute should be set
|
|
// todo: "plaintext" is not a valid CSS selector!
|
|
if ($att_name !== 'plaintext'
|
|
&& !isset($node->attr[$att_name])) {
|
|
$pass = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Continue with next attribute if expression isn't defined
|
|
if ($att_expr === '') continue;
|
|
|
|
// If they have told us that this is a "plaintext"
|
|
// search then we want the plaintext of the node - right?
|
|
// todo "plaintext" is not a valid CSS selector!
|
|
if ($att_name === 'plaintext') {
|
|
$nodeKeyValue = $node->text();
|
|
} else {
|
|
$nodeKeyValue = $node->attr[$att_name];
|
|
}
|
|
|
|
// If lowercase is set, do a case-insensitive test of
|
|
// the value of the selector.
|
|
if ($lowercase) {
|
|
$check = $this->match(
|
|
$att_expr,
|
|
strtolower($att_val),
|
|
strtolower($nodeKeyValue),
|
|
$att_case_sensitivity
|
|
);
|
|
} else {
|
|
$check = $this->match(
|
|
$att_expr,
|
|
$att_val,
|
|
$nodeKeyValue,
|
|
$att_case_sensitivity
|
|
);
|
|
}
|
|
|
|
$check = $ps_element === 'not' ? !$check : $check;
|
|
|
|
if (!$check) {
|
|
$pass = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Found a match. Add to list and clear node
|
|
$pass = $ps_selector === 'not' ? !$pass : $pass;
|
|
if ($pass) $ret[$node->_[self::HDOM_INFO_BEGIN]] = 1;
|
|
unset($node);
|
|
}
|
|
}
|
|
|
|
protected function match($exp, $pattern, $value, $case_sensitivity)
|
|
{
|
|
if ($case_sensitivity === 'i') {
|
|
$pattern = strtolower($pattern);
|
|
$value = strtolower($value);
|
|
}
|
|
|
|
// Apply the same rules for the pattern and attribute value
|
|
// Attribute values must not contain control characters other than space
|
|
// https://www.w3.org/TR/html/dom.html#text-content
|
|
// https://www.w3.org/TR/html/syntax.html#attribute-values
|
|
// https://www.w3.org/TR/xml/#AVNormalize
|
|
$pattern = preg_replace("/[\r\n\t\s]+/u", ' ', $pattern);
|
|
$pattern = trim($pattern);
|
|
|
|
$value = preg_replace("/[\r\n\t\s]+/u", ' ', $value);
|
|
$value = trim($value);
|
|
|
|
switch ($exp) {
|
|
case '=':
|
|
return ($value === $pattern);
|
|
case '!=':
|
|
return ($value !== $pattern);
|
|
case '^=':
|
|
return preg_match('/^' . preg_quote($pattern, '/') . '/', $value);
|
|
case '$=':
|
|
return preg_match('/' . preg_quote($pattern, '/') . '$/', $value);
|
|
case '*=':
|
|
return preg_match('/' . preg_quote($pattern, '/') . '/', $value);
|
|
case '|=':
|
|
/**
|
|
* [att|=val]
|
|
*
|
|
* Represents an element with the att attribute, its value
|
|
* either being exactly "val" or beginning with "val"
|
|
* immediately followed by "-" (U+002D).
|
|
*/
|
|
return strpos($value, $pattern) === 0;
|
|
case '~=':
|
|
/**
|
|
* [att~=val]
|
|
*
|
|
* Represents an element with the att attribute whose value is a
|
|
* whitespace-separated list of words, one of which is exactly
|
|
* "val". If "val" contains whitespace, it will never represent
|
|
* anything (since the words are separated by spaces). Also, if
|
|
* "val" is the empty string, it will never represent anything.
|
|
*/
|
|
return in_array($pattern, explode(' ', trim($value)), true);
|
|
}
|
|
|
|
Debug::log('Unhandled attribute selector: ' . $exp . '!');
|
|
return false;
|
|
}
|
|
|
|
protected function parse_selector($selector_string)
|
|
{
|
|
/**
|
|
* Pattern of CSS selectors, modified from mootools (https://mootools.net/)
|
|
*
|
|
* Paperg: Add the colon to the attribute, so that it properly finds
|
|
* <tag attr:ibute="something" > like google does.
|
|
*
|
|
* Note: if you try to look at this attribute, you MUST use getAttribute
|
|
* since $dom->x:y will fail the php syntax check.
|
|
*
|
|
* Notice the \[ starting the attribute? and the @? following? This
|
|
* implies that an attribute can begin with an @ sign that is not
|
|
* captured. This implies that a html attribute specifier may start
|
|
* with an @ sign that is NOT captured by the expression. Farther study
|
|
* is required to determine of this should be documented or removed.
|
|
*
|
|
* Matches selectors in this order:
|
|
*
|
|
* [0] - full match
|
|
*
|
|
* [1] - pseudo selector
|
|
* Matches the pseudo selector (optional)
|
|
*
|
|
* [2] - tag name
|
|
* Matches the tag name consisting of zero or more words, colons,
|
|
* asterisks and hyphens.
|
|
*
|
|
* [3] - pseudo selector
|
|
* Matches the pseudo selector (optional)
|
|
*
|
|
* [4] - id name
|
|
* Optionally matches an id name, consisting of an "#" followed by
|
|
* the id name (one or more words and hyphens).
|
|
*
|
|
* [5] - class names (including dots)
|
|
* Optionally matches a list of classs, consisting of an "."
|
|
* followed by the class name (one or more words and hyphens)
|
|
* where multiple classes can be chained (i.e. ".foo.bar.baz")
|
|
*
|
|
* [6] - attributes
|
|
* Optionally matches the attributes list
|
|
*
|
|
* [7] - separator
|
|
* Matches the selector list separator
|
|
*/
|
|
// phpcs:ignore Generic.Files.LineLength
|
|
$pattern = "/(?::(\w+)\()?([\w:*-]*)(?::(\w+)\()?(?:#([\w-]+))?(?:|\.([\w.-]+))?((?:\[@?!?[\w:-]+(?:[!*^$|~]?=(?![\"']).*?(?![\"'])|[!*^$|~]?=[\"'].*?[\"'])?(?:\s*?[iIsS]?)?])+)?\)?\)?([\/, >+~]+)/is";
|
|
|
|
preg_match_all(
|
|
$pattern,
|
|
trim($selector_string) . ' ', // Add final ' ' as pseudo separator
|
|
$matches,
|
|
PREG_SET_ORDER
|
|
);
|
|
|
|
$selectors = array();
|
|
$result = array();
|
|
|
|
foreach ($matches as $m) {
|
|
$m[0] = trim($m[0]);
|
|
|
|
// Skip NoOps
|
|
if ($m[0] === '' || $m[0] === '/' || $m[0] === '//') { continue; }
|
|
|
|
array_shift($m);
|
|
|
|
// Convert to lowercase
|
|
if ($this->dom->lowercase) {
|
|
$m[1] = strtolower($m[1]);
|
|
}
|
|
|
|
// Extract classes
|
|
if ($m[4] !== '') { $m[4] = explode('.', $m[4]); }
|
|
|
|
/* Extract attributes (pattern based on the pattern above!)
|
|
|
|
* [0] - full match
|
|
* [1] - attribute name
|
|
* [2] - attribute expression
|
|
* [3] - attribute value (with quotes)
|
|
* [4] - case sensitivity
|
|
*
|
|
* Note:
|
|
* Attributes can be negated with a "!" prefix to their name
|
|
* Attribute values may contain closing brackets "]"
|
|
*/
|
|
if($m[5] !== '') {
|
|
preg_match_all(
|
|
"/\[@?(!?[\w:-]+)(?:([!*^$|~]?=)((?![\"']).*?(?![\"'])|[\"'].*?[\"']))?(?:\s+?([iIsS])?)?]/is",
|
|
trim($m[5]),
|
|
$attributes,
|
|
PREG_SET_ORDER
|
|
);
|
|
|
|
// Replace element by array
|
|
$m[5] = array();
|
|
|
|
foreach($attributes as $att) {
|
|
// Skip empty matches
|
|
if(trim($att[0]) === '') { continue; }
|
|
|
|
// Remove quotes from value
|
|
if (isset($att[3]) && $att[3] !== '' && ($att[3][0] === '"' || $att[3][0] === "'")) {
|
|
$att[3] = substr($att[3], 1, strlen($att[3]) - 2);
|
|
}
|
|
|
|
$inverted = (isset($att[1][0]) && $att[1][0] === '!');
|
|
$m[5][] = array(
|
|
$inverted ? substr($att[1], 1) : $att[1], // Name
|
|
(isset($att[2])) ? $att[2] : '', // Expression
|
|
(isset($att[3])) ? $att[3] : '', // Value
|
|
$inverted, // Inverted Flag
|
|
(isset($att[4])) ? strtolower($att[4]) : '', // Case-Sensitivity
|
|
);
|
|
}
|
|
}
|
|
|
|
// Sanitize Separator
|
|
if ($m[6] !== '' && trim($m[6]) === '') { // Descendant Separator
|
|
$m[6] = ' ';
|
|
} else { // Other Separator
|
|
$m[6] = trim($m[6]);
|
|
}
|
|
|
|
// Clear Separator if it's a Selector List
|
|
if ($is_list = ($m[6] === ',')) { $m[6] = ''; }
|
|
|
|
$result[] = $m;
|
|
|
|
if ($is_list) { // Selector List
|
|
$selectors[] = $result;
|
|
$result = array();
|
|
}
|
|
}
|
|
|
|
if (count($result) > 0) { $selectors[] = $result; }
|
|
return $selectors;
|
|
}
|
|
|
|
function __get($name)
|
|
{
|
|
if (isset($this->attr[$name])) {
|
|
return $this->convert_text($this->attr[$name]);
|
|
}
|
|
|
|
switch ($name) {
|
|
case 'outertext': return $this->outertext();
|
|
case 'innertext': return $this->innertext();
|
|
case 'plaintext': return $this->text();
|
|
case 'xmltext': return $this->xmltext();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function __set($name, $value)
|
|
{
|
|
switch ($name) {
|
|
case 'outertext':
|
|
$this->_[self::HDOM_INFO_OUTER] = $value;
|
|
break;
|
|
case 'innertext':
|
|
if (isset($this->_[self::HDOM_INFO_TEXT])) {
|
|
$this->_[self::HDOM_INFO_TEXT] = '';
|
|
}
|
|
$this->_[self::HDOM_INFO_INNER] = $value;
|
|
break;
|
|
default: $this->attr[$name] = $value;
|
|
}
|
|
}
|
|
|
|
function __isset($name)
|
|
{
|
|
switch ($name) {
|
|
case 'innertext':
|
|
case 'plaintext':
|
|
case 'outertext': return true;
|
|
}
|
|
|
|
return isset($this->attr[$name]);
|
|
}
|
|
|
|
function __unset($name)
|
|
{
|
|
if (isset($this->attr[$name])) { unset($this->attr[$name]); }
|
|
}
|
|
|
|
function convert_text($text)
|
|
{
|
|
$converted_text = $text;
|
|
|
|
$sourceCharset = '';
|
|
$targetCharset = '';
|
|
|
|
if ($this->dom) {
|
|
$sourceCharset = strtoupper($this->dom->_charset);
|
|
$targetCharset = strtoupper($this->dom->_target_charset);
|
|
}
|
|
|
|
if ($sourceCharset !== '' &&
|
|
$targetCharset !== '' &&
|
|
$sourceCharset !== $targetCharset &&
|
|
!($targetCharset === 'UTF-8' && self::is_utf8($text))) {
|
|
$converted_text = iconv($sourceCharset, $targetCharset, $text);
|
|
}
|
|
|
|
// Let's make sure that we don't have that silly BOM issue with any of the utf-8 text we output.
|
|
if ($targetCharset === 'UTF-8') {
|
|
if (substr($converted_text, 0, 3) === "\xef\xbb\xbf") {
|
|
$converted_text = substr($converted_text, 3);
|
|
}
|
|
}
|
|
|
|
return $converted_text;
|
|
}
|
|
|
|
static function is_utf8($str)
|
|
{
|
|
if (extension_loaded('mbstring')){
|
|
return mb_detect_encoding($str, ['UTF-8'], true) === 'UTF-8';
|
|
}
|
|
|
|
// This code was copied from https://www.php.net/manual/en/function.mb-detect-encoding.php#85294
|
|
$c = 0; $b = 0;
|
|
$bits = 0;
|
|
$len = strlen($str);
|
|
for($i = 0; $i < $len; $i++) {
|
|
$c = ord($str[$i]);
|
|
if($c > 128) {
|
|
if(($c >= 254)) { return false; }
|
|
elseif($c >= 252) { $bits = 6; }
|
|
elseif($c >= 248) { $bits = 5; }
|
|
elseif($c >= 240) { $bits = 4; }
|
|
elseif($c >= 224) { $bits = 3; }
|
|
elseif($c >= 192) { $bits = 2; }
|
|
else { return false; }
|
|
if(($i + $bits) > $len) { return false; }
|
|
while($bits > 1) {
|
|
$i++;
|
|
$b = ord($str[$i]);
|
|
if($b < 128 || $b > 191) { return false; }
|
|
$bits--;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function get_display_size()
|
|
{
|
|
$width = -1;
|
|
$height = -1;
|
|
|
|
if ($this->tag !== 'img') {
|
|
return false;
|
|
}
|
|
|
|
// See if there is aheight or width attribute in the tag itself.
|
|
if (isset($this->attr['width'])) {
|
|
$width = $this->attr['width'];
|
|
}
|
|
|
|
if (isset($this->attr['height'])) {
|
|
$height = $this->attr['height'];
|
|
}
|
|
|
|
// Now look for an inline style.
|
|
if (isset($this->attr['style'])) {
|
|
// Thanks to user gnarf from stackoverflow for this regular expression.
|
|
$attributes = array();
|
|
|
|
preg_match_all(
|
|
'/([\w-]+)\s*:\s*([^;]+)\s*;?/',
|
|
$this->attr['style'],
|
|
$matches,
|
|
PREG_SET_ORDER
|
|
);
|
|
|
|
foreach ($matches as $match) {
|
|
$attributes[$match[1]] = $match[2];
|
|
}
|
|
|
|
// If there is a width in the style attributes:
|
|
if (isset($attributes['width']) && $width == -1) {
|
|
// check that the last two characters are px (pixels)
|
|
if (strtolower(substr($attributes['width'], -2)) === 'px') {
|
|
$proposed_width = substr($attributes['width'], 0, -2);
|
|
// Now make sure that it's an integer and not something stupid.
|
|
if (filter_var($proposed_width, FILTER_VALIDATE_INT)) {
|
|
$width = $proposed_width;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If there is a width in the style attributes:
|
|
if (isset($attributes['height']) && $height == -1) {
|
|
// check that the last two characters are px (pixels)
|
|
if (strtolower(substr($attributes['height'], -2)) == 'px') {
|
|
$proposed_height = substr($attributes['height'], 0, -2);
|
|
// Now make sure that it's an integer and not something stupid.
|
|
if (filter_var($proposed_height, FILTER_VALIDATE_INT)) {
|
|
$height = $proposed_height;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// Future enhancement:
|
|
// Look in the tag to see if there is a class or id specified that has
|
|
// a height or width attribute to it.
|
|
|
|
// Far future enhancement
|
|
// Look at all the parent tags of this image to see if they specify a
|
|
// class or id that has an img selector that specifies a height or width
|
|
// Note that in this case, the class or id will have the img sub-selector
|
|
// for it to apply to the image.
|
|
|
|
// ridiculously far future development
|
|
// If the class or id is specified in a SEPARATE css file that's not on
|
|
// the page, go get it and do what we were just doing for the ones on
|
|
// the page.
|
|
|
|
$result = array(
|
|
'height' => $height,
|
|
'width' => $width
|
|
);
|
|
|
|
return $result;
|
|
}
|
|
|
|
function save($filepath = '')
|
|
{
|
|
$ret = $this->outertext();
|
|
|
|
if ($filepath !== '') {
|
|
file_put_contents($filepath, $ret, LOCK_EX);
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function addClass($class)
|
|
{
|
|
if (is_string($class)) {
|
|
$class = explode(' ', $class);
|
|
}
|
|
|
|
if (is_array($class)) {
|
|
foreach($class as $c) {
|
|
if (isset($this->class)) {
|
|
if ($this->hasClass($c)) {
|
|
continue;
|
|
} else {
|
|
$this->class .= ' ' . $c;
|
|
}
|
|
} else {
|
|
$this->class = $c;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function hasClass($class)
|
|
{
|
|
if (is_string($class)) {
|
|
if (isset($this->class)) {
|
|
return in_array($class, explode(' ', $this->class), true);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function removeClass($class = null)
|
|
{
|
|
if (!isset($this->class)) {
|
|
return;
|
|
}
|
|
|
|
if (is_null($class)) {
|
|
$this->removeAttribute('class');
|
|
return;
|
|
}
|
|
|
|
if (is_string($class)) {
|
|
$class = explode(' ', $class);
|
|
}
|
|
|
|
if (is_array($class)) {
|
|
$class = array_diff(explode(' ', $this->class), $class);
|
|
if (empty($class)) {
|
|
$this->removeAttribute('class');
|
|
} else {
|
|
$this->class = implode(' ', $class);
|
|
}
|
|
}
|
|
}
|
|
|
|
function getAllAttributes()
|
|
{
|
|
return $this->attr;
|
|
}
|
|
|
|
function getAttribute($name)
|
|
{
|
|
return $this->$name;
|
|
}
|
|
|
|
function setAttribute($name, $value)
|
|
{
|
|
$this->$name = $value;
|
|
}
|
|
|
|
function hasAttribute($name)
|
|
{
|
|
return isset($this->$name);
|
|
}
|
|
|
|
function removeAttribute($name)
|
|
{
|
|
unset($this->$name);
|
|
}
|
|
|
|
function remove()
|
|
{
|
|
if ($this->parent) {
|
|
$this->parent->removeChild($this);
|
|
}
|
|
}
|
|
|
|
function removeChild($node)
|
|
{
|
|
foreach($node->children as $child) {
|
|
$node->removeChild($child);
|
|
}
|
|
|
|
// No need to re-index node->children because it is about to be removed!
|
|
|
|
foreach($node->nodes as $entity) {
|
|
$enidx = array_search($entity, $node->nodes, true);
|
|
$edidx = array_search($entity, $node->dom->nodes, true);
|
|
|
|
if ($enidx !== false) {
|
|
unset($node->nodes[$enidx]);
|
|
}
|
|
|
|
if ($edidx !== false) {
|
|
unset($node->dom->nodes[$edidx]);
|
|
}
|
|
}
|
|
|
|
// No need to re-index node->nodes because it is about to be removed!
|
|
|
|
$nidx = array_search($node, $this->nodes, true);
|
|
$cidx = array_search($node, $this->children, true);
|
|
$didx = array_search($node, $this->dom->nodes, true);
|
|
|
|
if ($nidx !== false) {
|
|
unset($this->nodes[$nidx]);
|
|
}
|
|
|
|
$this->nodes = array_values($this->nodes);
|
|
|
|
if ($cidx !== false) {
|
|
unset($this->children[$cidx]);
|
|
}
|
|
|
|
$this->children = array_values($this->children);
|
|
|
|
if ($didx !== false) {
|
|
unset($this->dom->nodes[$didx]);
|
|
}
|
|
|
|
// Do not re-index dom->nodes because nodes point to other nodes in the
|
|
// array explicitly!
|
|
|
|
$node->clear();
|
|
}
|
|
|
|
function getElementById($id)
|
|
{
|
|
return $this->find("#$id", 0);
|
|
}
|
|
|
|
function getElementsById($id, $idx = null)
|
|
{
|
|
return $this->find("#$id", $idx);
|
|
}
|
|
|
|
function getElementByTagName($name)
|
|
{
|
|
return $this->find($name, 0);
|
|
}
|
|
|
|
function getElementsByTagName($name, $idx = null)
|
|
{
|
|
return $this->find($name, $idx);
|
|
}
|
|
|
|
function parentNode()
|
|
{
|
|
return $this->parent();
|
|
}
|
|
|
|
function childNodes($idx = -1)
|
|
{
|
|
if ($idx === -1) {
|
|
return $this->children;
|
|
}
|
|
|
|
if (isset($this->children[$idx])) {
|
|
return $this->children[$idx];
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
function firstChild()
|
|
{
|
|
if (count($this->children) > 0) {
|
|
return $this->children[0];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function lastChild()
|
|
{
|
|
if (count($this->children) > 0) {
|
|
return end($this->children);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function nextSibling()
|
|
{
|
|
if ($this->parent === null) {
|
|
return null;
|
|
}
|
|
|
|
$idx = array_search($this, $this->parent->children, true);
|
|
|
|
if ($idx !== false && isset($this->parent->children[$idx + 1])) {
|
|
return $this->parent->children[$idx + 1];
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
function previousSibling()
|
|
{
|
|
if ($this->parent === null) {
|
|
return null;
|
|
}
|
|
|
|
$idx = array_search($this, $this->parent->children, true);
|
|
|
|
if ($idx !== false && $idx > 0) {
|
|
return $this->parent->children[$idx - 1];
|
|
}
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
function hasChildNodes()
|
|
{
|
|
return !empty($this->children);
|
|
}
|
|
|
|
function nodeName()
|
|
{
|
|
return $this->tag;
|
|
}
|
|
|
|
function appendChild($node)
|
|
{
|
|
$node->parent = $this;
|
|
$this->nodes[] = $node;
|
|
$this->children[] = $node;
|
|
|
|
if ($this->dom) { // Attach current node to DOM (recursively)
|
|
$children = array($node);
|
|
|
|
while($children) {
|
|
$child = array_pop($children);
|
|
$children = array_merge($children, $child->children);
|
|
|
|
$this->dom->nodes[] = $child;
|
|
$child->dom = $this->dom;
|
|
$child->_[self::HDOM_INFO_BEGIN] = count($this->dom->nodes) - 1;
|
|
$child->_[self::HDOM_INFO_END] = $child->_[self::HDOM_INFO_BEGIN];
|
|
}
|
|
|
|
$this->dom->root->_[self::HDOM_INFO_END] = count($this->dom->nodes) - 1;
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
}
|