/**
* Combines assets matching a pattern to a single file asset, optionally applies filters.
*
* @param AssetCollection $assets
* @param string $name
* @param array $options
* @return AssetCollection
*/
protected function doCombine(AssetCollection $assets, $name, $options = [])
{
extract($options);
$combine = new AssetCollection();
$pattern = $this->globToRegex($pattern);
foreach ($assets as $asset) {
if (preg_match($pattern, $asset->getName())) {
$combine->add($asset);
}
}
$file = strtr($this->cache, ['%name%' => $name]);
if ($names = $combine->names() and $file = $this->doCache($combine, $file, $filters)) {
$assets->remove(array_slice($names, 1));
$assets->replace(array_shift($names), $this->factory->create($name, $file));
}
return $assets;
}
