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DeprecationCollector.php
01 <?php
02
03 /*
04 * This file is part of Twig.
05 *
06 * (c) Fabien Potencier
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Twig\Util;
13
14 use Twig\Environment;
15 use Twig\Error\SyntaxError;
16 use Twig\Source;
17
18 /**
19 * @author Fabien Potencier <fabien@symfony.com>
20 */
21 final class DeprecationCollector
22 {
23 private $twig;
24
25 public function __construct(Environment $twig)
26 {
27 $this->twig = $twig;
28 }
29
30 /**
31 * Returns deprecations for templates contained in a directory.
32 *
33 * @param string $dir A directory where templates are stored
34 * @param string $ext Limit the loaded templates by extension
35 *
36 * @return array An array of deprecations
37 */
38 public function collectDir($dir, $ext = '.twig')
39 {
40 $iterator = new \RegexIterator(
41 new \RecursiveIteratorIterator(
42 new \RecursiveDirectoryIterator($dir), \RecursiveIteratorIterator::LEAVES_ONLY
43 ), '{'.preg_quote($ext).'$}'
44 );
45
46 return $this->collect(new TemplateDirIterator($iterator));
47 }
48
49 /**
50 * Returns deprecations for passed templates.
51 *
52 * @param \Traversable $iterator An iterator of templates (where keys are template names and values the contents of the template)
53 *
54 * @return array An array of deprecations
55 */
56 public function collect(\Traversable $iterator)
57 {
58 $deprecations = [];
59 set_error_handler(function ($type, $msg) use (&$deprecations) {
60 if (\E_USER_DEPRECATED === $type) {
61 $deprecations[] = $msg;
62 }
63 });
64
65 foreach ($iterator as $name => $contents) {
66 try {
67 $this->twig->parse($this->twig->tokenize(new Source($contents, $name)));
68 } catch (SyntaxError $e) {
69 // ignore templates containing syntax errors
70 }
71 }
72
73 restore_error_handler();
74
75 return $deprecations;
76 }
77 }
78
79 class_alias('Twig\Util\DeprecationCollector', 'Twig_Util_DeprecationCollector');
80