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- 06.01.2017
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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 /**
13 * @author Fabien Potencier <fabien@symfony.com>
14 */
15 class Twig_Util_DeprecationCollector
16 {
17 private $twig;
18 private $deprecations;
19
20 public function __construct(Twig_Environment $twig)
21 {
22 $this->twig = $twig;
23 }
24
25 /**
26 * Returns deprecations for templates contained in a directory.
27 *
28 * @param string $dir A directory where templates are stored
29 * @param string $ext Limit the loaded templates by extension
30 *
31 * @return array() An array of deprecations
32 */
33 public function collectDir($dir, $ext = '.twig')
34 {
35 $iterator = new RegexIterator(
36 new RecursiveIteratorIterator(
37 new RecursiveDirectoryIterator($dir), RecursiveIteratorIterator::LEAVES_ONLY
38 ), '{'.preg_quote($ext).'$}'
39 );
40
41 return $this->collect(new Twig_Util_TemplateDirIterator($iterator));
42 }
43
44 /**
45 * Returns deprecations for passed templates.
46 *
47 * @param Iterator $iterator An iterator of templates (where keys are template names and values the contents of the template)
48 *
49 * @return array() An array of deprecations
50 */
51 public function collect(Iterator $iterator)
52 {
53 $this->deprecations = array();
54
55 set_error_handler(array($this, 'errorHandler'));
56
57 foreach ($iterator as $name => $contents) {
58 try {
59 $this->twig->parse($this->twig->tokenize($contents, $name));
60 } catch (Twig_Error_Syntax $e) {
61 // ignore templates containing syntax errors
62 }
63 }
64
65 restore_error_handler();
66
67 $deprecations = $this->deprecations;
68 $this->deprecations = array();
69
70 return $deprecations;
71 }
72
73 /**
74 * @internal
75 */
76 public function errorHandler($type, $msg)
77 {
78 if (E_USER_DEPRECATED === $type) {
79 $this->deprecations[] = $msg;
80 }
81 }
82 }
83