vendor/kriswallsmith/assetic/src/Assetic/Asset/Iterator/AssetCollectionIterator.php

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<?php

/*
 * This file is part of the Assetic package, an OpenSky project.
 *
 * (c) 2010-2014 OpenSky Project Inc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Assetic\Asset\Iterator;

use Assetic\Asset\AssetCollectionInterface;

/**
 * Iterates over an asset collection.
 *
 * The iterator is responsible for cascading filters and target URL patterns
 * from parent to child assets.
 *
 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
 */
class AssetCollectionIterator implements \RecursiveIterator
{
    private $assets;
    private $filters;
    private $vars;
    private $output;
    private $clones;

    public function __construct(AssetCollectionInterface $coll, \SplObjectStorage $clones)
    {
        $this->assets  = $coll->all();
        $this->filters = $coll->getFilters();
        $this->vars    = $coll->getVars();
        $this->output  = $coll->getTargetPath();
        $this->clones  = $clones;

        if (false === $pos = strrpos($this->output, '.')) {
            $this->output .= '_*';
        } else {
            $this->output = substr($this->output, 0, $pos).'_*'.substr($this->output, $pos);
        }
    }

    /**
     * Returns a copy of the current asset with filters and a target URL applied.
     *
     * @param Boolean $raw Returns the unmodified asset if true
     *
     * @return \Assetic\Asset\AssetInterface
     */
    public function current($raw = false)
    {
        $asset = current($this->assets);

        if ($raw) {
            return $asset;
        }