<?php
/*
* This file is part of the Assetic package, an OpenSky project.
*
* (c) 2010-2012 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 $output;
private $clones;
public function __construct(AssetCollectionInterface $coll, \SplObjectStorage $clones) {
$this->assets = $coll
->all();
$this->filters = $coll
->getFilters();
$this->output = $coll
->getTargetPath();
$this->clones = $clones;
if (false === ($pos = strpos($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 $raw Returns the unmodified asset if true
*/
public function current($raw = false) {
$asset = current($this->assets);
if ($raw) {
return $asset;
}
// clone once
if (!isset($this->clones[$asset])) {
$clone = $this->clones[$asset] = clone $asset;
// generate a target path based on asset name
$name = sprintf('%s_%d', pathinfo($asset
->getSourcePath(), PATHINFO_FILENAME) ?: 'part', $this
->key() + 1);
$clone
->setTargetPath(str_replace('*', $name, $this->output));
}
else {
$clone = $this->clones[$asset];
}
// cascade filters
foreach ($this->filters as $filter) {
$clone
->ensureFilter($filter);
}
return $clone;
}
public function key() {
return key($this->assets);
}
public function next() {
return next($this->assets);
}
public function rewind() {
return reset($this->assets);
}
public function valid() {
return false !== current($this->assets);
}
public function hasChildren() {
return current($this->assets) instanceof AssetCollectionInterface;
}
/**
* @uses current()
*/
public function getChildren() {
return new self($this
->current(), $this->clones);
}
}
Name | Description |
---|---|
AssetCollectionIterator | Iterates over an asset collection. |