QueryPath-library-for-Joomla/QueryPath.php at master · css117/QueryPath-library-for-Joomla · GitHub

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<?php


define('ML_EXP','/^[^<]*(<(.|\s)+>)[^>]*$/');


require_once 'CssEventHandler.php';

require_once 'QueryPathExtension.php';


function qp($document = NULL, $string = NULL, $options = array()) {

  $qpClass = isset($options['QueryPath_class']) ? $options['QueryPath_class'] : 'QueryPath';

  $qp = new $qpClass($document, $string, $options);
  return $qp;
}


function htmlqp($document = NULL, $selector = NULL, $options = array()) {


  $options += array(
    'ignore_parser_warnings' => TRUE,
    'convert_to_encoding' => 'ISO-8859-1',
    'convert_from_encoding' => 'auto',

    'use_parser' => 'html',


  );
  return @qp($document, $selector, $options);
}


class QueryPath implements IteratorAggregate, Countable {


  const VERSION = '2.1.1';


  const HTML_STUB = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  <html lang="en">
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <title>Untitled</title>
  </head>
  <body></body>
  </html>';


  const XHTML_STUB = '<?xml version="1.0"?>
  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
  <html xmlns="http://www.w3.org/1999/xhtml">
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  <title>Untitled</title>
  </head>
  <body></body>
  </html>';


  const DEFAULT_PARSER_FLAGS = NULL;

  const JS_CSS_ESCAPE_CDATA = '\\1';
  const JS_CSS_ESCAPE_CDATA_CCOMMENT = '/* \\1 */';
  const JS_CSS_ESCAPE_CDATA_DOUBLESLASH = '// \\1';
  const JS_CSS_ESCAPE_NONE = '';


  private $errTypes = 771;


  protected $document = NULL;
  private $options = array(
    'parser_flags' => NULL,
    'omit_xml_declaration' => FALSE,
    'replace_entities' => FALSE,
    'exception_level' => 771,
    'ignore_parser_warnings' => FALSE,
    'escape_xhtml_js_css_sections' => self::JS_CSS_ESCAPE_CDATA_CCOMMENT,
  );

  protected $matches = array();

  protected $last = array();
  private $ext = array();


  public $length = 0;


  public function __construct($document = NULL, $string = NULL, $options = array()) {
    $string = trim($string);
    $this->options = $options + QueryPathOptions::get() + $this->options;

    $parser_flags = isset($options['parser_flags']) ? $options['parser_flags'] : self::DEFAULT_PARSER_FLAGS;
    if (!empty($this->options['ignore_parser_warnings'])) {

      $this->errTypes = 257;
    }
    elseif (isset($this->options['exception_level'])) {


      $this->errTypes = $this->options['exception_level'];
    }


    if (empty($document)) {
      $this->document = isset($this->options['encoding']) ? new DOMDocument('1.0', $this->options['encoding']) : new DOMDocument();
      $this->setMatches(new SplObjectStorage());
    }

    elseif (is_object($document)) {

      if ($document instanceof QueryPath) {
        $this->matches = $document->get(NULL, TRUE);
        if ($this->matches->count() > 0)
          $this->document = $this->getFirstMatch()->ownerDocument;
      }
      elseif ($document instanceof DOMDocument) {
        $this->document = $document;

        $this->setMatches($document->documentElement);
      }
      elseif ($document instanceof DOMNode) {
        $this->document = $document->ownerDocument;

        $this->setMatches($document);
      }
      elseif ($document instanceof SimpleXMLElement) {
        $import = dom_import_simplexml($document);
        $this->document = $import->ownerDocument;

        $this->setMatches($import);
      }
      elseif ($document instanceof SplObjectStorage) {
        if ($document->count() == 0) {
          throw new QueryPathException('Cannot initialize QueryPath from an empty SplObjectStore');
        }
        $this->matches = $document;
        $this->document = $this->getFirstMatch()->ownerDocument;
      }
      else {
        throw new QueryPathException('Unsupported class type: ' . get_class($document));
      }
    }
    elseif (is_array($document)) {

      if (!empty($document) && $document[0] instanceof DOMNode) {
        $found = new SplObjectStorage();
        foreach ($document as $item) $found->attach($item);

        $this->setMatches($found);
        $this->document = $this->getFirstMatch()->ownerDocument;
      }
    }
    elseif ($this->isXMLish($document)) {

      $this->document = $this->parseXMLString($document);
      $this->setMatches($this->document->documentElement);
    }
    else {


      $context = empty($options['context']) ? NULL : $options['context'];
      $this->document = $this->parseXMLFile($document, $parser_flags, $context);
      $this->setMatches($this->document->documentElement);
    }


    if (isset($string) && strlen($string) > 0) {
      $this->find($string);
    }
  }


  public static function encodeDataURL($data, $mime = 'application/octet-stream', $context = NULL) {
    if (is_resource($data)) {
      $data = stream_get_contents($data);
    }
    elseif (filter_var($data, FILTER_VALIDATE_URL)) {
      $data = file_get_contents($data, FALSE, $context);
    }

    $encoded = base64_encode($data);

    return 'data:' . $mime . ';base64,' . $encoded;
  }


  public function getOptions() {
    return $this->options;
  }


  public function top($selector = NULL) {
    $this->setMatches($this->document->documentElement);


    return !empty($selector) ? $this->find($selector) : $this;
  }


  public function find($selector) {


    $ids = array();

    $regex = '/^#([\w-]+)$|^\.([\w-]+)$/';

    if (preg_match($regex, $selector, $ids) === 1) {

      if (!empty($ids[1])) {
        $xpath = new DOMXPath($this->document);
        foreach ($this->matches as $item) {


          if ($item->isSameNode($this->document->documentElement) ) {
            $xpathQuery = "//*[@id='{$ids[1]}']";
          }

          else {
            $xpathQuery = ".//*[@id='{$ids[1]}']";
          }


          $nl = $xpath->query($xpathQuery, $item);
          if ($nl->length > 0) {
            $this->setMatches($nl->item(0));
            break;
          }
          else {

            $this->noMatches();
          }
        }
      }


      else {
        $xpath = new DOMXPath($this->document);
        $found = new SplObjectStorage();
        foreach ($this->matches as $item) {

          if ($item->isSameNode($this->document->documentElement) ) {
            $xpathQuery = "//*[@class]";
          }

          else {
            $xpathQuery = ".//*[@class]";
          }
          $nl = $xpath->query($xpathQuery, $item);
          for ($i = 0; $i < $nl->length; ++$i) {
            $vals = explode(' ', $nl->item($i)->getAttribute('class'));
            if (in_array($ids[2], $vals)) $found->attach($nl->item($i));
          }
        }
        $this->setMatches($found);
      }

      return $this;
    }


    $query = new QueryPathCssEventHandler($this->matches);
    $query->find($selector);

    $this->setMatches($query->getMatches());
    return $this;
  }


  public function xpath($query, $options = array()) {
    $xpath = new DOMXPath($this->document);


    if (!empty($options['namespace_prefix']) && !empty($options['namespace_uri'])) {
      $xpath->registerNamespace($options['namespace_prefix'], $options['namespace_uri']);
    }

    $found = new SplObjectStorage();
    foreach ($this->matches as $item) {
      $nl = $xpath->query($query, $item);
      if ($nl->length > 0) {
        for ($i = 0; $i < $nl->length; ++$i) $found->attach($nl->item($i));
      }
    }
    $this->setMatches($found);
    return $this;
  }


  public function size() {
    return $this->matches->count();
  }


  public function count() {
    return $this->matches->count();
  }


  public function get($index = NULL, $asObject = FALSE) {
    if (isset($index)) {
      return ($this->size() > $index) ? $this->getNthMatch($index) : NULL;
    }

    if (!$asObject) {
      $matches = array();
      foreach ($this->matches as $m) $matches[] = $m;
      return $matches;
    }
    return $this->matches;
  }


  public function document() {
    return $this->document;
  }


  public function xinclude() {
    $this->document->xinclude();
    return $this;
  }


  public function toArray() {
    return $this->get();
  }

  public function attr($name = NULL, $value = NULL) {


    if (is_null($name)) {
      if ($this->matches->count() == 0) return NULL;
      $ele = $this->getFirstMatch();
      $buffer = array();


      foreach ($ele->attributes as $name => $attrNode) {
        $buffer[$name] = $attrNode->value;
      }
      return $buffer;
    }


    if (is_array($name)) {
      foreach ($name as $k => $v) {
        foreach ($this->matches as $m) $m->setAttribute($k, $v);
      }
      return $this;
    }

    if (isset($value)) {
      foreach ($this->matches as $m) $m->setAttribute($name, $value);
      return $this;
    }


    if ($this->matches->count() == 0) return NULL;


    if ($name == 'nodeType') {
      return $this->getFirstMatch()->nodeType;
    }


    return $this->getFirstMatch()->getAttribute($name);
  }

  public function hasAttr($attrName) {
    foreach ($this->matches as $match) {
      if (!$match->hasAttribute($attrName)) return FALSE;
    }
    return TRUE;
  }


  public function css($name = NULL, $value = '') {
    if (empty($name)) {
      return $this->attr('style');
    }


    $css = array();
    foreach ($this->matches as $match) {
      $style = $match->getAttribute('style');
      if (!empty($style)) {

        $style_array = explode(';', $style);
        foreach ($style_array as $item) {
          $item = trim($item);


          if (strlen($item) == 0) continue;

          list($css_att, $css_val) = explode(':',$item, 2);
          $css[$css_att] = trim($css_val);
        }
      }
    }

    if (is_array($name)) {

      $css = array_merge($css, $name);
    }
    else {
      $css[$name] = $value;
    }


    $format = '%s: %s;';
    $css_string = '';
    foreach ($css as $n => $v) {
      $css_string .= sprintf($format, $n, trim($v));
    }

    $this->attr('style', $css_string);
    return $this;
  }


  public function dataURL($attr, $data = NULL, $mime = 'application/octet-stream', $context = NULL) {
    if (is_null($data)) {

      $data = $this->attr($attr);
      if (empty($data) || is_array($data) || strpos($data, 'data:') !== 0) {
        return;
      }


      $regex = '/^data:([a-zA-Z0-9]+)\/([a-zA-Z0-9]+);base64,(.*)$/';
      $matches = array();
      preg_match($regex, $data, $matches);

      if (!empty($matches)) {
        $result = array(
          'mime' => $matches[1] . '/' . $matches[2],
          'data' => base64_decode($matches[3]),
        );
        return $result;
      }
    }
    else {

      $attVal = self::encodeDataURL($data, $mime, $context);

      return $this->attr($attr, $attVal);

    }
  }


  public function removeAttr($name) {
    foreach ($this->matches as $m) {

        $m->removeAttribute($name);
    }
    return $this;
  }

  public function eq($index) {

    $this->setMatches($this->getNthMatch($index));
    return $this;
  }

  public function is($selector) {

    if (is_object($selector)) {
      if ($selector instanceof DOMNode) {
        return count($this->matches) == 1 && $selector->isSameNode($this->get(0));
      }
      elseif ($selector instanceof Traversable) {
        if (count($selector) != count($this->matches)) {
          return FALSE;
        }


        $seen = new SplObjectStorage();
        foreach ($selector as $item) {
          if (!$this->matches->contains($item) || $seen->contains($item)) {
            return FALSE;
          }
          $seen->attach($item);
        }
        return TRUE;
      }
      throw new Exception('Cannot compare an object to a QueryPath.');
      return FALSE;
    }

    foreach ($this->matches as $m) {
      $q = new QueryPathCssEventHandler($m);
      if ($q->find($selector)->getMatches()->count()) {
        return TRUE;
      }
    }
    return FALSE;
  }

  public function filter($selector) {
    $found = new SplObjectStorage();
    foreach ($this->matches as $m) if (qp($m, NULL, $this->options)->is($selector)) $found->attach($m);
    $this->setMatches($found);
    return $this;
  }

  public function filterLambda($fn) {
    $function = create_function('$index, $item', $fn);
    $found = new SplObjectStorage();
    $i = 0;
    foreach ($this->matches as $item)
      if ($function($i++, $item) !== FALSE) $found->attach($item);

    $this->setMatches($found);
    return $this;
  }


  public function filterPreg($regex) {

    $found = new SplObjectStorage();

    foreach ($this->matches as $item) {
      if (preg_match($regex, $item->textContent) > 0) {
        $found->attach($item);
      }
    }
    $this->setMatches($found);

    return $this;
  }

  public function filterCallback($callback) {
    $found = new SplObjectStorage();
    $i = 0;
    if (is_callable($callback)) {
      foreach($this->matches as $item)
        if (call_user_func($callback, $i++, $item) !== FALSE) $found->attach($item);
    }
    else {
      throw new QueryPathException('The specified callback is not callable.');
    }
    $this->setMatches($found);
    return $this;
  }

  public function not($selector) {
    $found = new SplObjectStorage();
    if ($selector instanceof DOMElement) {
      foreach ($this->matches as $m) if ($m !== $selector) $found->attach($m);
    }
    elseif (is_array($selector)) {
      foreach ($this->matches as $m) {
        if (!in_array($m, $selector, TRUE)) $found->attach($m);
      }
    }
    elseif ($selector instanceof SplObjectStorage) {
      foreach ($this->matches as $m) if ($selector->contains($m)) $found->attach($m);
    }
    else {
      foreach ($this->matches as $m) if (!qp($m, NULL, $this->options)->is($selector)) $found->attach($m);
    }
    $this->setMatches($found);
    return $this;
  }

  public function index($subject) {

    $i = 0;
    foreach ($this->matches as $m) {
      if ($m === $subject) {
        return $i;
      }
      ++$i;
    }
    return FALSE;
  }

  public function map($callback) {
    $found = new SplObjectStorage();

    if (is_callable($callback)) {
      $i = 0;
      foreach ($this->matches as $item) {
        $c = call_user_func($callback, $i, $item);
        if (isset($c)) {
          if (is_array($c) || $c instanceof Iterable) {
            foreach ($c as $retval) {
              if (!is_object($retval)) {
                $tmp = new stdClass();
                $tmp->textContent = $retval;
                $retval = $tmp;
              }
              $found->attach($retval);
            }
          }
          else {
            if (!is_object($c)) {
              $tmp = new stdClass();
              $tmp->textContent = $c;
              $c = $tmp;
            }
            $found->attach($c);
          }
        }
        ++$i;
      }
    }
    else {
      throw new QueryPathException('Callback is not callable.');
    }
    $this->setMatches($found, FALSE);
    return $this;
  }

  public function slice($start, $length = 0) {
    $end = $length;
    $found = new SplObjectStorage();
    if ($start >= $this->size()) {
      $this->setMatches($found);
      return $this;
    }

    $i = $j = 0;
    foreach ($this->matches as $m) {
      if ($i >= $start) {
        if ($end > 0 && $j >= $end) {
          break;
        }
        $found->attach($m);
        ++$j;
      }
      ++$i;
    }

    $this->setMatches($found);
    return $this;
  }

  public function each($callback) {
    if (is_callable($callback)) {
      $i = 0;
      foreach ($this->matches as $item) {
        if (call_user_func($callback, $i, $item) === FALSE) return $this;
        ++$i;
      }
    }
    else {
      throw new QueryPathException('Callback is not callable.');
    }
    return $this;
  }

  public function eachLambda($lambda) {
    $index = 0;
    foreach ($this->matches as $item) {
      $fn = create_function('$index, &$item', $lambda);
      if ($fn($index, $item) === FALSE) return $this;
      ++$index;
    }
    return $this;
  }

  public function append($data) {
    $data = $this->prepareInsert($data);
    if (isset($data)) {
      if (empty($this->document->documentElement) && $this->matches->count() == 0) {

        $this->document->appendChild($data);
        $found = new SplObjectStorage();
        $found->attach($this->document->documentElement);
        $this->setMatches($found);
      }
      else {


        foreach ($this->matches as $m) {


          if ($data instanceof DOMDocumentFragment) {
            foreach ($data->childNodes as $n)
              $m->appendChild($n->cloneNode(TRUE));
          }
          else {

            $m->appendChild($data->cloneNode(TRUE));
          }

        }
      }

    }
    return $this;
  }

  public function appendTo(QueryPath $dest) {
    foreach ($this->matches as $m) $dest->append($m);
    return $this;
  }

  public function prepend($data) {
    $data = $this->prepareInsert($data);
    if (isset($data)) {
      foreach ($this->matches as $m) {
        $ins = $data->cloneNode(TRUE);
        if ($m->hasChildNodes())
          $m->insertBefore($ins, $m->childNodes->item(0));
        else
          $m->appendChild($ins);
      }
    }
    return $this;
  }

  public function prependTo(QueryPath $dest) {
    foreach ($this->matches as $m) $dest->prepend($m);
    return $this;
  }


  public function before($data) {
    $data = $this->prepareInsert($data);
    foreach ($this->matches as $m) {
      $ins = $data->cloneNode(TRUE);
      $m->parentNode->insertBefore($ins, $m);
    }

    return $this;
  }

  public function insertBefore(QueryPath $dest) {
    foreach ($this->matches as $m) $dest->before($m);
    return $this;
  }

  public function insertAfter(QueryPath $dest) {
    foreach ($this->matches as $m) $dest->after($m);
    return $this;
  }

  public function after($data) {
    $data = $this->prepareInsert($data);
    foreach ($this->matches as $m) {
      $ins = $data->cloneNode(TRUE);
      if (isset($m->nextSibling))
        $m->parentNode->insertBefore($ins, $m->nextSibling);
      else
        $m->parentNode->appendChild($ins);
    }
    return $this;
  }

  public function replaceWith($new) {
    $data = $this->prepareInsert($new);
    $found = new SplObjectStorage();
    foreach ($this->matches as $m) {
      $parent = $m->parentNode;
      $parent->insertBefore($data->cloneNode(TRUE), $m);
      $found->attach($parent->removeChild($m));
    }
    $this->setMatches($found);
    return $this;
  }

  public function unwrap() {


    $parents = new SplObjectStorage();
    foreach ($this->matches as $m) {


      if ($m->isSameNode($m->ownerDocument->documentElement)) {
        throw new QueryPathException('Cannot unwrap the root element.');
      }


      $parent = $m->parentNode;
      $old = $parent->removeChild($m);
      $parent->parentNode->insertBefore($old, $parent);
      $parents->attach($parent);
    }


    foreach ($parents as $ele) {
      $ele->parentNode->removeChild($ele);
    }

    return $this;
  }

  public function wrap($markup) {
    $data = $this->prepareInsert($markup);


    if (empty($data)) {
      return $this;
    }

    foreach ($this->matches as $m) {
      $copy = $data->firstChild->cloneNode(TRUE);


      if ($copy->hasChildNodes()) {
        $deepest = $this->deepestNode($copy);

        $bottom = $deepest[0];
      }
      else
        $bottom = $copy;

      $parent = $m->parentNode;
      $parent->insertBefore($copy, $m);
      $m = $parent->removeChild($m);
      $bottom->appendChild($m);

    }
    return $this;
  }

  public function wrapAll($markup) {
    if ($this->matches->count() == 0) return;

    $data = $this->prepareInsert($markup);

    if (empty($data)) {
      return $this;
    }

    if ($data->hasChildNodes()) {
      $deepest = $this->deepestNode($data);

      $bottom = $deepest[0];
    }
    else
      $bottom = $data;

    $first = $this->getFirstMatch();
    $parent = $first->parentNode;
    $parent->insertBefore($data, $first);
    foreach ($this->matches as $m) {
      $bottom->appendChild($m->parentNode->removeChild($m));
    }
    return $this;
  }
  /**
   * Wrap the child elements of each item in the list with the given markup.
   *
   * Markup is usually a string, but it can also be a DOMNode, a document
   * fragment, a SimpleXMLElement, or another QueryPath object (in which case
   * the first item in the list will be used.)
   *
   * @param string $markup
   *  Markup that will wrap children of each element in the current list.
   * @return QueryPath
   *  The QueryPath object with the wrapping changes made.
   * @see wrap()
   * @see wrapAll()
   */
  public function wrapInner($markup) {
    $data = $this->prepareInsert($markup);


    if (empty($data)) return $this;

    if ($data->hasChildNodes()) {
      $deepest = $this->deepestNode($data);

      $bottom = $deepest[0];
    }
    else
      $bottom = $data;

    foreach ($this->matches as $m) {
      if ($m->hasChildNodes()) {
        while($m->firstChild) {
          $kid = $m->removeChild($m->firstChild);
          $bottom->appendChild($kid);
        }
      }
      $m->appendChild($data);
    }
    return $this;
  }

  public function deepest() {
    $deepest = 0;
    $winner = new SplObjectStorage();
    foreach ($this->matches as $m) {
      $local_deepest = 0;
      $local_ele = $this->deepestNode($m, 0, NULL, $local_deepest);


      if ($local_deepest > $deepest) {
        $winner = new SplObjectStorage();
        foreach ($local_ele as $lele) $winner->attach($lele);
        $deepest = $local_deepest;
      }

      elseif ($local_deepest == $deepest) {
        foreach ($local_ele as $lele)
          $winner->attach($lele);
      }
    }
    $this->setMatches($winner);
    return $this;
  }


  protected function deepestNode(DOMNode $ele, $depth = 0, $current = NULL, &$deepest = NULL) {

    if (!isset($current)) $current = array($ele);
    if (!isset($deepest)) $deepest = $depth;
    if ($ele->hasChildNodes()) {
      foreach ($ele->childNodes as $child) {
        if ($child->nodeType === XML_ELEMENT_NODE) {
          $current = $this->deepestNode($child, $depth + 1, $current, $deepest);
        }
      }
    }
    elseif ($depth > $deepest) {
      $current = array($ele);
      $deepest = $depth;
    }
    elseif ($depth === $deepest) {
      $current[] = $ele;
    }
    return $current;
  }


  protected function prepareInsert($item) {
    if(empty($item)) {
      return;
    }
    elseif (is_string($item)) {

      if ($this->options['replace_entities']) {
        $item = QueryPathEntities::replaceAllEntities($item);
      }

      $frag = $this->document->createDocumentFragment();
      try {
        set_error_handler(array('QueryPathParseException', 'initializeFromError'), $this->errTypes);
        $frag->appendXML($item);
      }

      catch (Exception $e) {
        restore_error_handler();
        throw $e;
      }
      restore_error_handler();
      return $frag;
    }
    elseif ($item instanceof QueryPath) {
      if ($item->size() == 0)
        return;

      return $this->prepareInsert($item->get(0));
    }
    elseif ($item instanceof DOMNode) {
      if ($item->ownerDocument !== $this->document) {

        $item = $this->document->importNode($item, TRUE);
      }
      return $item;
    }
    elseif ($item instanceof SimpleXMLElement) {
      $element = dom_import_simplexml($item);
      return $this->document->importNode($element, TRUE);
    }