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- Veröffentlicht
- 27.10.2014
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HelpCommand.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\Command;
13
14 use Symfony\Component\Console\Helper\DescriptorHelper;
15 use Symfony\Component\Console\Input\InputArgument;
16 use Symfony\Component\Console\Input\InputOption;
17 use Symfony\Component\Console\Input\InputInterface;
18 use Symfony\Component\Console\Output\OutputInterface;
19
20 /**
21 * HelpCommand displays the help for a given command.
22 *
23 * @author Fabien Potencier <fabien@symfony.com>
24 */
25 class HelpCommand extends Command
26 {
27 private $command;
28
29 /**
30 * {@inheritdoc}
31 */
32 protected function configure()
33 {
34 $this->ignoreValidationErrors();
35
36 $this
37 ->setName('help')
38 ->setDefinition(array(
39 new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', 'help'),
40 new InputOption('xml', null, InputOption::VALUE_NONE, 'To output help as XML'),
41 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'To output help in other formats'),
42 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw command help'),
43 ))
44 ->setDescription('Displays help for a command')
45 ->setHelp(<<<EOF
46 The <info>%command.name%</info> command displays help for a given command:
47
48 <info>php %command.full_name% list</info>
49
50 You can also output the help in other formats by using the <comment>--format</comment> option:
51
52 <info>php %command.full_name% --format=xml list</info>
53
54 To display the list of available commands, please use the <info>list</info> command.
55 EOF
56 )
57 ;
58 }
59
60 /**
61 * Sets the command
62 *
63 * @param Command $command The command to set
64 */
65 public function setCommand(Command $command)
66 {
67 $this->command = $command;
68 }
69
70 /**
71 * {@inheritdoc}
72 */
73 protected function execute(InputInterface $input, OutputInterface $output)
74 {
75 if (null === $this->command) {
76 $this->command = $this->getApplication()->find($input->getArgument('command_name'));
77 }
78
79 if ($input->getOption('xml')) {
80 $input->setOption('format', 'xml');
81 }
82
83 $helper = new DescriptorHelper();
84 $helper->describe($output, $this->command, $input->getOption('format'), $input->getOption('raw'));
85 $this->command = null;
86 }
87 }
88