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- 27.10.2014
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DescriptorHelper.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
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 Symfony\Component\Console\Helper;
13
14 use Symfony\Component\Console\Descriptor\DescriptorInterface;
15 use Symfony\Component\Console\Descriptor\JsonDescriptor;
16 use Symfony\Component\Console\Descriptor\MarkdownDescriptor;
17 use Symfony\Component\Console\Descriptor\TextDescriptor;
18 use Symfony\Component\Console\Descriptor\XmlDescriptor;
19 use Symfony\Component\Console\Output\OutputInterface;
20
21 /**
22 * This class adds helper method to describe objects in various formats.
23 *
24 * @author Jean-François Simon <contact@jfsimon.fr>
25 */
26 class DescriptorHelper extends Helper
27 {
28 /**
29 * @var DescriptorInterface[]
30 */
31 private $descriptors = array();
32
33 /**
34 * Constructor.
35 */
36 public function __construct()
37 {
38 $this
39 ->register('txt', new TextDescriptor())
40 ->register('xml', new XmlDescriptor())
41 ->register('json', new JsonDescriptor())
42 ->register('md', new MarkdownDescriptor())
43 ;
44 }
45
46 /**
47 * Describes an object if supported.
48 *
49 * @param OutputInterface $output
50 * @param object $object
51 * @param string|null $format
52 * @param bool $raw
53 * @param string|null $namespace
54 *
55 * @throws \InvalidArgumentException when the given format is not supported
56 */
57 public function describe(OutputInterface $output, $object, $format = null, $raw = false, $namespace = null)
58 {
59 $options = array('raw_text' => $raw, 'format' => $format ?: 'txt', 'namespace' => $namespace);
60 $type = !$raw && 'txt' === $options['format'] ? OutputInterface::OUTPUT_NORMAL : OutputInterface::OUTPUT_RAW;
61
62 if (!isset($this->descriptors[$options['format']])) {
63 throw new \InvalidArgumentException(sprintf('Unsupported format "%s".', $options['format']));
64 }
65
66 $descriptor = $this->descriptors[$options['format']];
67
68 $output->writeln($descriptor->describe($object, $options), $type);
69 }
70
71 /**
72 * Registers a descriptor.
73 *
74 * @param string $format
75 * @param DescriptorInterface $descriptor
76 *
77 * @return DescriptorHelper
78 */
79 public function register($format, DescriptorInterface $descriptor)
80 {
81 $this->descriptors[$format] = $descriptor;
82
83 return $this;
84 }
85
86 /**
87 * {@inheritdoc}
88 */
89 public function getName()
90 {
91 return 'descriptor';
92 }
93 }
94