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<?php
 /*
 * This file is part of the Assetic package, an OpenSky project.
 *
 * (c) 2010-2013 OpenSky Project Inc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
 
 use Assetic\Factory\AssetFactory;
 use Assetic\Util\TraversableString;
 
 /**
 * Initializes the global Assetic object.
 *
 * @param AssetFactory $factory The asset factory
 */
 function assetic_init(AssetFactory $factory)
 {
 global $_assetic;
 
 $_assetic = new stdClass();
 $_assetic->factory = $factory;
 }
 
 /**
 * Returns an array of javascript URLs.
 *
 * @param array|string $inputs  Input strings
 * @param array|string $filters Filter names
 * @param array        $options An array of options
 *
 * @return array An array of javascript URLs
 */
 function assetic_javascripts($inputs = array(), $filters = array(), array $options = array())
 {
 if (!isset($options['output'])) {
 $options['output'] = 'js/*.js';
 }
 
 return _assetic_urls($inputs, $filters, $options);
 }
 
 /**
 * Returns an array of stylesheet URLs.
 *
 * @param array|string $inputs  Input strings
 * @param array|string $filters Filter names
 * @param array        $options An array of options
 *
 * @return array An array of stylesheet URLs
 */
 function assetic_stylesheets($inputs = array(), $filters = array(), array $options = array())
 {
 if (!isset($options['output'])) {
 $options['output'] = 'css/*.css';
 }
 
 return _assetic_urls($inputs, $filters, $options);
 }
 
 /**
 * Returns an image URL.
 *
 * @param string       $input   An input
 * @param array|string $filters Filter names
 * @param array        $options An array of options
 *
 * @return string An image URL
 */
 function assetic_image($input, $filters = array(), array $options = array())
 {
 if (!isset($options['output'])) {
 $options['output'] = 'images/*';
 }
 
 $urls = _assetic_urls($input, $filters, $options);
 
 return current($urls);
 }
 
 /**
 * Returns an array of asset urls.
 *
 * @param array|string $inputs  Input strings
 * @param array|string $filters Filter names
 * @param array        $options An array of options
 *
 * @return array An array of URLs
 */
 function _assetic_urls($inputs = array(), $filters = array(), array $options = array())
 {
 global $_assetic;
 
 if (!is_array($inputs)) {
 $inputs = array_filter(array_map('trim', explode(',', $inputs)));
 }
 
 if (!is_array($filters)) {
 $filters = array_filter(array_map('trim', explode(',', $filters)));
 }
 
 $coll = $_assetic->factory->createAsset($inputs, $filters, $options);
 
 $debug = isset($options['debug']) ? $options['debug'] : $_assetic->factory->isDebug();
 $combine = isset($options['combine']) ? $options['combine'] : !$debug;
 
 $one = $coll->getTargetPath();
 if ($combine) {
 $many = array($one);
 } else {
 $many = array();
 foreach ($coll as $leaf) {
 $many[] = $leaf->getTargetPath();
 }
 }
 
 return new TraversableString($one, $many);
 }
 
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