/**
* Discover a list of possible xpaths that are collection items
* in sorted order where the first element is the most likely.
* @return array[string]
*/
public function discoverScores(Nodes $nodes)
{
$nonContentNodes = $nodes->find('//*[not(text())]');
$maxSibs = (new Utils())->getMaxSibCount($nodes->getDocument(), $nonContentNodes);
arsort($maxSibs);
$ancestorCountGrouping = [];
foreach ($maxSibs as $path => $count) {
if ($count < 2) {
continue;
}
$ancestorCount = substr_count($path, '/');
if (!isset($ancestorCountGrouping[$ancestorCount])) {
$ancestorCountGrouping[$ancestorCount] = [$path => $count];
} else {
$ancestorCountGrouping[$ancestorCount][$path] = $count;
}
}
ksort($ancestorCountGrouping);
$result = [];
foreach ($ancestorCountGrouping as $_ => $collectionScores) {
foreach ($collectionScores as $path => $score) {
$result[$path] = $score;
}
}
return $result;
}
/**
* Fetch the nodes for the provided context node. If $context
* ist NULL the document context is used.
*
* @throws \InvalidArgumentException
* @param string $expression
* @param \DOMNode $context
* @param int $options
* @return array|bool|\DOMNodeList|float|string
*/
private function fetchNodes($expression, \DOMNode $context = NULL, $options = 0)
{
$nodes = $this->_nodes->xpath($expression, $context);
if (!$nodes instanceof \DOMNodeList) {
throw new \InvalidArgumentException('Given selector/expression did not return a node list.');
}
$nodes = iterator_to_array($nodes);
if (Constraints::hasOption($options, self::REVERSE)) {
return array_reverse($nodes, FALSE);
}
return $nodes;
}
public function groupByCallable(Nodes $nodes, callable $fn)
{
$grouping = [];
foreach ($nodes as $node) {
$key = $fn($node);
if (!isset($grouping[$key])) {
$grouping[$key] = [];
}
$grouping[$key][] = $node;
}
foreach ($grouping as $key => &$nodeList) {
$nodeList = $nodes->spawn($nodeList);
}
return $grouping;
}
/**
* Throws an exception if somebody tries to unset one
* of the dynamic properties
*
* @param string $name
* @throws \BadMethodCallException
*/
public function __unset($name)
{
switch ($name) {
case 'attr':
case 'css':
case 'data':
throw new \BadMethodCallException(sprintf('Can not unset property %s::$%s', get_class($this), $name));
}
parent::__unset($name);
// @codeCoverageIgnoreStart
}
