[7265] | 1 | <?php |
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| 2 | |
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| 3 | /* |
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| 4 | * This file is part of the Assetic package, an OpenSky project. |
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| 5 | * |
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| 6 | * (c) 2010-2012 OpenSky Project Inc |
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| 7 | * |
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| 8 | * For the full copyright and license information, please view the LICENSE |
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| 9 | * file that was distributed with this source code. |
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| 10 | */ |
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| 11 | |
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| 12 | namespace Assetic\Extension\Twig; |
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| 13 | |
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| 14 | use Assetic\Factory\Loader\FormulaLoaderInterface; |
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| 15 | use Assetic\Factory\Resource\ResourceInterface; |
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| 16 | |
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| 17 | /** |
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| 18 | * Loads asset formulae from Twig templates. |
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| 19 | * |
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| 20 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
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| 21 | */ |
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| 22 | class TwigFormulaLoader implements FormulaLoaderInterface |
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| 23 | { |
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| 24 | private $twig; |
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| 25 | |
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| 26 | public function __construct(\Twig_Environment $twig) |
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| 27 | { |
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| 28 | $this->twig = $twig; |
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| 29 | } |
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| 30 | |
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| 31 | public function load(ResourceInterface $resource) |
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| 32 | { |
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| 33 | try { |
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| 34 | $tokens = $this->twig->tokenize($resource->getContent(), (string) $resource); |
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| 35 | $nodes = $this->twig->parse($tokens); |
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| 36 | } catch (\Exception $e) { |
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| 37 | return array(); |
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| 38 | } |
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| 39 | |
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| 40 | return $this->loadNode($nodes); |
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| 41 | } |
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| 42 | |
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| 43 | /** |
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| 44 | * Loads assets from the supplied node. |
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| 45 | * |
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| 46 | * @param \Twig_Node $node |
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| 47 | * |
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| 48 | * @return array An array of asset formulae indexed by name |
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| 49 | */ |
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| 50 | private function loadNode(\Twig_Node $node) |
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| 51 | { |
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| 52 | $formulae = array(); |
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| 53 | |
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| 54 | if ($node instanceof AsseticNode) { |
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| 55 | $formulae[$node->getAttribute('name')] = array( |
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| 56 | $node->getAttribute('inputs'), |
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| 57 | $node->getAttribute('filters'), |
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| 58 | array( |
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| 59 | 'output' => $node->getAttribute('asset')->getTargetPath(), |
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| 60 | 'name' => $node->getAttribute('name'), |
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| 61 | 'debug' => $node->getAttribute('debug'), |
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| 62 | 'combine' => $node->getAttribute('combine'), |
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| 63 | 'vars' => $node->getAttribute('vars'), |
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| 64 | ), |
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| 65 | ); |
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| 66 | } elseif ($node instanceof \Twig_Node_Expression_Function) { |
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| 67 | $name = version_compare(\Twig_Environment::VERSION, '1.2.0-DEV', '<') |
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| 68 | ? $node->getNode('name')->getAttribute('name') |
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| 69 | : $node->getAttribute('name'); |
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| 70 | |
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| 71 | if ($this->twig->getFunction($name) instanceof AsseticFilterFunction) { |
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| 72 | $arguments = array(); |
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| 73 | foreach ($node->getNode('arguments') as $argument) { |
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| 74 | $arguments[] = eval('return '.$this->twig->compile($argument).';'); |
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| 75 | } |
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| 76 | |
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| 77 | $invoker = $this->twig->getExtension('assetic')->getFilterInvoker($name); |
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| 78 | |
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| 79 | $inputs = isset($arguments[0]) ? (array) $arguments[0] : array(); |
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| 80 | $filters = $invoker->getFilters(); |
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| 81 | $options = array_replace($invoker->getOptions(), isset($arguments[1]) ? $arguments[1] : array()); |
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| 82 | |
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| 83 | if (!isset($options['name'])) { |
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| 84 | $options['name'] = $invoker->getFactory()->generateAssetName($inputs, $filters, $options); |
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| 85 | } |
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| 86 | |
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| 87 | $formulae[$options['name']] = array($inputs, $filters, $options); |
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| 88 | } |
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| 89 | } |
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| 90 | |
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| 91 | foreach ($node as $child) { |
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| 92 | if ($child instanceof \Twig_Node) { |
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| 93 | $formulae += $this->loadNode($child); |
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| 94 | } |
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| 95 | } |
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| 96 | |
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| 97 | return $formulae; |
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| 98 | } |
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| 99 | } |
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