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<?php namespace simplehtmldom;
/**
* Website: http://sourceforge.net/projects/simplehtmldom/
* Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/)
*
* Licensed under The MIT License
* See the LICENSE file in the project root for more information.
*
* Authors:
* S.C. Chen
* John Schlick
* Rus Carroll
* logmanoriginal
*
* Contributors:
* Yousuke Kumakura
* Vadim Voituk
* Antcs
*
* Version $Rev$
*/
include_once 'constants.php';
include_once 'Debug.php';
class HtmlNode
{
const HDOM_TYPE_ELEMENT = 1;
const HDOM_TYPE_COMMENT = 2;
const HDOM_TYPE_TEXT = 3;
const HDOM_TYPE_ROOT = 5;
const HDOM_TYPE_UNKNOWN = 6;
const HDOM_TYPE_CDATA = 7;
const HDOM_QUOTE_DOUBLE = 0;
const HDOM_QUOTE_SINGLE = 1;
const HDOM_QUOTE_NO = 3;
const HDOM_INFO_BEGIN = 0;
const HDOM_INFO_END = 1;
const HDOM_INFO_QUOTE = 2;
const HDOM_INFO_SPACE = 3;
const HDOM_INFO_TEXT = 4;
const HDOM_INFO_INNER = 5;
const HDOM_INFO_OUTER = 6;
const HDOM_INFO_ENDSPACE = 7;
public $nodetype = self::HDOM_TYPE_TEXT;
public $tag = 'text';
public $attr = array();
public $children = array();
public $nodes = array();
public $parent = null;
public $_ = array();
private $dom = null;
function __call($func, $args)
{
// Allow users to call methods with lower_case syntax
switch($func)
{
case 'children':
$actual_function = 'childNodes'; break;
case 'first_child':
$actual_function = 'firstChild'; break;
case 'has_child':
$actual_function = 'hasChildNodes'; break;
case 'last_child':
$actual_function = 'lastChild'; break;
case 'next_sibling':
$actual_function = 'nextSibling'; break;
case 'prev_sibling':
$actual_function = 'previousSibling'; break;
default:
trigger_error(
'Call to undefined method ' . __CLASS__ . '::' . $func . '()',
E_USER_ERROR
);
}
// phpcs:ignore Generic.Files.LineLength
Debug::log(__CLASS__ . '->' . $func . '() has been deprecated and will be removed in the next major version of simplehtmldom. Use ' . __CLASS__ . '->' . $actual_function . '() instead.');
return call_user_func_array(array($this, $actual_function), $args);
}
function __construct($dom)
{
if ($dom instanceof HtmlDocument)
{
$this->dom = $dom;
$dom->nodes[] = $this;
}
}
function __debugInfo()
{
// Translate node type to human-readable form
switch($this->nodetype)
{
case self::HDOM_TYPE_ELEMENT:
$nodetype = "HDOM_TYPE_ELEMENT ($this->nodetype)";
break;
case self::HDOM_TYPE_COMMENT:
$nodetype = "HDOM_TYPE_COMMENT ($this->nodetype)";
break;
case self::HDOM_TYPE_TEXT:
$nodetype = "HDOM_TYPE_TEXT ($this->nodetype)";
break;
case self::HDOM_TYPE_ROOT:
$nodetype = "HDOM_TYPE_ROOT ($this->nodetype)";
break;
case self::HDOM_TYPE_CDATA:
$nodetype = "HDOM_TYPE_CDATA ($this->nodetype)";
break;
case self::HDOM_TYPE_UNKNOWN:
default:
$nodetype = "HDOM_TYPE_UNKNOWN ($this->nodetype)";
}
return array(
'nodetype' => $nodetype,
'tag' => $this->tag,
'attributes' => empty($this->attr) ? 'none' : $this->attr,
'nodes' => empty($this->nodes) ? 'none' : $this->nodes
);
}
function __toString()
{
return $this->outertext();
}
function clear()
{
unset($this->dom); // Break link to origin
unset($this->parent); // Break link to branch
}
/** @codeCoverageIgnore */
function dump($show_attr = true, $depth = 0)
{
echo str_repeat("\t", $depth) . $this->tag;
if ($show_attr && count($this->attr) > 0) {
echo '(';
foreach ($this->attr as $k => $v) {
echo "[$k]=>\"$v\", ";
}
echo ')';
}
echo "\n";
if ($this->nodes) {
foreach ($this->nodes as $node) {
$node->dump($show_attr, $depth + 1);
}
}
}
/** @codeCoverageIgnore */
function dump_node($echo = true)
{
$string = $this->tag;
if (count($this->attr) > 0) {
$string .= '(';
foreach ($this->attr as $k => $v) {
$string .= "[$k]=>\"$v\", ";
}
$string .= ')';
}
if (count($this->_) > 0) {
$string .= ' $_ (';
foreach ($this->_ as $k => $v) {
if (is_array($v)) {
$string .= "[$k]=>(";
foreach ($v as $k2 => $v2) {
$string .= "[$k2]=>\"$v2\", ";
}
$string .= ')';
} else {
$string .= "[$k]=>\"$v\", ";
}
}
$string .= ')';
}
if (isset($this->text)) {
$string .= " text: ($this->text)";
}
$string .= ' HDOM_INNER_INFO: ';
if (isset($node->_[self::HDOM_INFO_INNER])) {
$string .= "'" . $node->_[self::HDOM_INFO_INNER] . "'";
} else {
$string .= ' NULL ';
}
$string .= ' children: ' . count($this->children);
$string .= ' nodes: ' . count($this->nodes);
$string .= "\n";
if ($echo) {
echo $string;
return;
} else {
return $string;
}
}
function parent($parent = null)
{
// I am SURE that this doesn't work properly.
// It fails to unset the current node from its current parents nodes or
// children list first.
if ($parent !== null) {
$this->parent = $parent;
$this->parent->nodes[] = $this;
$this->parent->children[] = $this;
}
return $this->parent;
}
function find_ancestor_tag($tag)
{
if ($this->parent === null) return null;
$ancestor = $this->parent;
while (!is_null($ancestor)) {
if ($ancestor->tag === $tag) {
break;
}
$ancestor = $ancestor->parent;
}
return $ancestor;
}
function innertext()
{
if (isset($this->_[self::HDOM_INFO_INNER])) {
$ret = $this->_[self::HDOM_INFO_INNER];
} elseif (isset($this->_[self::HDOM_INFO_TEXT])) {
$ret = $this->_[self::HDOM_INFO_TEXT];
} else {
$ret = '';
}
foreach ($this->nodes as $n) {
$ret .= $n->outertext();
}
return $this->convert_text($ret);
}
function outertext()
{
if ($this->tag === 'root') {
return $this->innertext();
}
// todo: What is the use of this callback? Remove?
if ($this->dom && $this->dom->callback !== null) {
call_user_func_array($this->dom->callback, array($this));
}
if (isset($this->_[self::HDOM_INFO_OUTER])) {
return $this->convert_text($this->_[self::HDOM_INFO_OUTER]);
}
if (isset($this->_[self::HDOM_INFO_TEXT])) {
return $this->convert_text($this->_[self::HDOM_INFO_TEXT]);
}
$ret = '';
if (isset($this->_[self::HDOM_INFO_BEGIN])) {
$ret = $this->makeup();
}
if (isset($this->_[self::HDOM_INFO_INNER]) && $this->tag !== HtmlElement::BR) {
if (HtmlElement::isRawTextElement($this->tag)){
$ret .= $this->_[self::HDOM_INFO_INNER];
} else {
if ($this->dom && $this->dom->targetCharset) {
$charset = $this->dom->targetCharset;
} else {
$charset = DEFAULT_TARGET_CHARSET;
}
if ($this->dom->enable_htmlentity_operations) {
$ret .= htmlentities($this->_[self::HDOM_INFO_INNER], ENT_QUOTES | ENT_SUBSTITUTE, $charset);
} else {
$ret .= $this->_[self::HDOM_INFO_INNER];
}
}
}
if ($this->nodes) {
foreach ($this->nodes as $n) {
$ret .= $n->outertext();
}
}
if (isset($this->_[self::HDOM_INFO_END]) && $this->_[self::HDOM_INFO_END] != 0) {
$ret .= '</' . $this->tag . '>';
}
return $this->convert_text($ret);
}
/**
* Returns true if the provided element is a block level element
* @link https://www.w3resource.com/html/HTML-block-level-and-inline-elements.php
*/
protected function is_block_element($node)
{
return HtmlElement::isPalpableContent($node->tag) &&
!HtmlElement::isMetadataContent($node->tag) &&
!HtmlElement::isPhrasingContent($node->tag) &&
!HtmlElement::isEmbeddedContent($node->tag) &&
!HtmlElement::isInteractiveContent($node->tag);
}
function text($trim = true)
{
if (HtmlElement::isRawTextElement($this->tag)) {
return '';
}
$ret = '';
switch ($this->nodetype) {
case self::HDOM_TYPE_COMMENT:
case self::HDOM_TYPE_UNKNOWN:
return '';
case self::HDOM_TYPE_TEXT:
$ret = $this->_[self::HDOM_INFO_TEXT];
break;
default:
if (isset($this->_[self::HDOM_INFO_INNER])) {
$ret = $this->_[self::HDOM_INFO_INNER];
}
break;
}
// Replace and collapse whitespace
$ret = preg_replace('/\s+/u', ' ', $ret);
// Reduce whitespace at start/end to a single (or none) space
$ret = preg_replace('/[ \t\n\r\0\x0B\xC2\xA0]+$/u', $trim ? '' : ' ', $ret);
$ret = preg_replace('/^[ \t\n\r\0\x0B\xC2\xA0]+/u', $trim ? '' : ' ', $ret);
// TODO: Remove BR_TEXT customization.
// It has no practical use and only makes the code harder to read.
if ($this->dom){ // for the root node, ->dom is undefined.
$br_text = $this->dom->default_br_text ?: DEFAULT_BR_TEXT;
}
foreach ($this->nodes as $n) {
if ($this->is_block_element($n)) {
$block = $this->convert_text($n->text($trim));
if ($block === '') {
$ret = rtrim($ret) . "\n\n";
continue;
}
if ($ret === ''){
$ret = $block . "\n\n";
continue;
}
$ret = rtrim($ret) . "\n\n" . $block . "\n\n";
continue;
}
if (strtolower($n->tag) === HtmlElement::BR) {
if ($ret === ''){
// Don't start with a line break.
continue;
}
$ret .= $br_text;
continue;
}
$text = $this->convert_text($n->text($trim));
if ($text === ''){
continue;
}
if ($ret === ''){
$ret = ltrim($text);
continue;
}
if (substr($ret, -1) === "\n" ||
substr($ret, -1) === ' ' ||
substr($ret, -strlen($br_text)) === $br_text){
$ret .= ltrim($text);
continue;
}
$ret .= ' ' . ltrim($text);
}
return trim($ret);
}
function xmltext()
{
$ret = $this->innertext();
$ret = str_ireplace('<![CDATA[', '', $ret);
$ret = str_replace(']]>', '', $ret);
return $ret;
}
function makeup()
{
// text, comment, unknown
if (isset($this->_[self::HDOM_INFO_TEXT])) {
return $this->_[self::HDOM_INFO_TEXT];
}
$ret = '<' . $this->tag;
foreach ($this->attr as $key => $val) {
// skip removed attribute
if ($val === null || $val === false) { continue; }
if (isset($this->_[self::HDOM_INFO_SPACE][$key])) {
$ret .= $this->_[self::HDOM_INFO_SPACE][$key][0];
} else {
$ret .= ' ';
}
//no value attr: nowrap, checked selected...
if ($val === true) {
$ret .= $key;
} else {
if (isset($this->_[self::HDOM_INFO_QUOTE][$key])) {
$quote_type = $this->_[self::HDOM_INFO_QUOTE][$key];
} else {
$quote_type = self::HDOM_QUOTE_DOUBLE;
}
switch ($quote_type)
{
case self::HDOM_QUOTE_SINGLE:
$quote = '\'';
break;
case self::HDOM_QUOTE_NO:
if (strpos($val, ' ') !== false ||
strpos($val, "\t") !== false ||
strpos($val, "\f") !== false ||
strpos($val, "\r") !== false ||
strpos($val, "\n") !== false) {
$quote = '"';
} else {
$quote = '';
}
break;
case self::HDOM_QUOTE_DOUBLE:
default:
$quote = '"';
}
if ($this->dom->enable_htmlentity_operations) {
$val = htmlentities($val, ENT_COMPAT, $this->dom->target_charset);
}
$ret .= $key
. (isset($this->_[self::HDOM_INFO_SPACE][$key]) ? $this->_[self::HDOM_INFO_SPACE][$key][1] : '')
. '='
. (isset($this->_[self::HDOM_INFO_SPACE][$key]) ? $this->_[self::HDOM_INFO_SPACE][$key][2] : '')
. $quote
. $val
. $quote;
}
}
if(isset($this->_[self::HDOM_INFO_ENDSPACE])) {
$ret .= $this->_[self::HDOM_INFO_ENDSPACE];
}
return $ret . '>';
}
function find($selector, $idx = null, $lowercase = false)
{
$selectors = $this->parse_selector($selector);
if (($count = count($selectors)) === 0) { return array(); }
$found_keys = array();
for ($c = 0; $c < $count; ++$c) {
if (($level = count($selectors[$c])) === 0) {
Debug::log_once('Empty selector (' . $selector . ') matches nothing.');
return array();
}
if (!isset($this->_[self::HDOM_INFO_BEGIN])) {
Debug::log_once('Invalid operation. The current node has no start tag.');
return array();
}
$head = array($this->_[self::HDOM_INFO_BEGIN] => 1);
$cmd = ' '; // Combinator
// handle descendant selectors, no recursive!
for ($l = 0; $l < $level; ++$l) {
$ret = array();
foreach ($head as $k => $v) {
$n = ($k === -1) ? $this->dom->root : $this->dom->nodes[$k];
//PaperG - Pass this optional parameter on to the seek function.
$n->seek($selectors[$c][$l], $ret, $cmd, $lowercase);
}
$head = $ret;
$cmd = $selectors[$c][$l][6]; // Next Combinator
}
foreach ($head as $k => $v) {
if (!isset($found_keys[$k])) {
$found_keys[$k] = 1;
}
}
}
// sort keys
ksort($found_keys);
$found = array();
foreach ($found_keys as $k => $v) {
$found[] = $this->dom->nodes[$k];
}
// return nth-element or array
if (is_null($idx)) { return $found; }
elseif ($idx < 0) { $idx = count($found) + $idx; }
return (isset($found[$idx])) ? $found[$idx] : null;
}
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;
}
}