public function getElements($selector)
{
$all_nodes = array();
foreach ($this->tokenize_selectors($selector) as $selector) {
$nodes = array($this->dom);
foreach ($this->tokenize($selector) as $token) {
$combinator = $token['combinator'];
$token = trim($token['name']);
$pos = strpos($token, '#');
if (false !== $pos && preg_match('/^[A-Za-z0-9]*$/', substr($token, 0, $pos))) {
// Token is an ID selector
$tagName = substr($token, 0, $pos);
$id = substr($token, $pos + 1);
$xpath = new DomXPath($this->dom);
$element = $xpath->query(sprintf("//*[@id = '%s']", $id))->item(0);
if (!$element || $tagName && strtolower($element->nodeName) != $tagName) {
// tag with that ID not found
return array();
}
// Set nodes to contain just this element
$nodes = array($element);
continue;
// Skip to next token
}
$pos = strpos($token, '.');
if (false !== $pos && preg_match('/^[A-Za-z0-9]*$/', substr($token, 0, $pos))) {
// Token contains a class selector
$tagName = substr($token, 0, $pos);
if (!$tagName) {
$tagName = '*';
}
$className = substr($token, $pos + 1);
// Get elements matching tag, filter them for class selector
$founds = $this->getElementsByTagName($nodes, $tagName, $combinator);
$nodes = array();
foreach ($founds as $found) {
if (preg_match('/\\b' . $className . '\\b/', $found->getAttribute('class'))) {
$nodes[] = $found;
}
}
continue;
// Skip to next token
}
// Code to deal with attribute selectors
if (preg_match('/^(\\w*)(\\[.+\\])$/', $token, $matches)) {
$tagName = $matches[1] ? $matches[1] : '*';
preg_match_all('/
\\[
(\\w+) # attribute
([=~\\|\\^\\$\\*]?) # modifier (optional)
=? # equal (optional)
(
"([^"]*)" # quoted value (optional)
|
([^\\]]*) # non quoted value (optional)
)
\\]
/x', $matches[2], $matches, PREG_SET_ORDER);
// Grab all of the tagName elements within current node
$founds = $this->getElementsByTagName($nodes, $tagName, $combinator);
$nodes = array();
foreach ($founds as $found) {
$ok = false;
foreach ($matches as $match) {
$attrName = $match[1];
$attrOperator = $match[2];
$attrValue = $match[4];
switch ($attrOperator) {
case '=':
// Equality
$ok = $found->getAttribute($attrName) == $attrValue;
break;
case '~':
// Match one of space seperated words
$ok = preg_match('/\\b' . preg_quote($attrValue, '/') . '\\b/', $found->getAttribute($attrName));
break;
case '|':
// Match start with value followed by optional hyphen
$ok = preg_match('/^' . preg_quote($attrValue, '/') . '-?/', $found->getAttribute($attrName));
break;
case '^':
// Match starts with value
$ok = 0 === strpos($found->getAttribute($attrName), $attrValue);
break;
case '$':
// Match ends with value
$ok = $attrValue == substr($found->getAttribute($attrName), -strlen($attrValue));
break;
case '*':
// Match ends with value
$ok = false !== strpos($found->getAttribute($attrName), $attrValue);
break;
default:
// Just test for existence of attribute
$ok = $found->hasAttribute($attrName);
}
if (false == $ok) {
break;
}
}
if ($ok) {
$nodes[] = $found;
}
}
continue;
// Skip to next token
}
if (preg_match('/^(\\w*)(:first-child)$/', $token, $matches)) {
$token = $matches[1] ? $matches[1] : '*';
$combinator = $matches[2] ? $matches[2] : '';
}
// If we get here, token is JUST an element (not a class or ID selector)
$nodes = $this->getElementsByTagName($nodes, $token, $combinator);
}
foreach ($nodes as $node) {
if (!$node->getAttribute('sf_matched')) {
$node->setAttribute('sf_matched', true);
$all_nodes[] = $node;
}
}
}
foreach ($all_nodes as $node) {
$node->removeAttribute('sf_matched');
}
return $all_nodes;
}
