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121 lines
3.6 KiB
PHP
121 lines
3.6 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Bundle\FrameworkBundle\Command;
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use Symfony\Bundle\FrameworkBundle\Console\Helper\DescriptorHelper;
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use Symfony\Component\Console\Input\InputArgument;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\OutputInterface;
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use Symfony\Component\Console\Style\SymfonyStyle;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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/**
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* A console command for retrieving information about event dispatcher.
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*
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* @author Matthieu Auger <mail@matthieuauger.com>
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*
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* @final since version 3.4
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*/
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class EventDispatcherDebugCommand extends ContainerAwareCommand
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{
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protected static $defaultName = 'debug:event-dispatcher';
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private $dispatcher;
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/**
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* @param EventDispatcherInterface $dispatcher
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*/
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public function __construct($dispatcher = null)
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{
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if (!$dispatcher instanceof EventDispatcherInterface) {
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@trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, EventDispatcherInterface::class), \E_USER_DEPRECATED);
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parent::__construct($dispatcher);
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return;
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}
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parent::__construct();
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$this->dispatcher = $dispatcher;
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}
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/**
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* {@inheritdoc}
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*/
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protected function configure()
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{
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$this
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->setDefinition([
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new InputArgument('event', InputArgument::OPTIONAL, 'An event name'),
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new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
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new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw description'),
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])
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->setDescription('Displays configured listeners for an application')
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->setHelp(<<<'EOF'
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The <info>%command.name%</info> command displays all configured listeners:
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<info>php %command.full_name%</info>
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To get specific listeners for an event, specify its name:
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<info>php %command.full_name% kernel.request</info>
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EOF
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)
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;
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}
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/**
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* {@inheritdoc}
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*
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* @throws \LogicException
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*/
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protected function execute(InputInterface $input, OutputInterface $output)
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{
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// BC to be removed in 4.0
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if (null === $this->dispatcher) {
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$this->dispatcher = $this->getEventDispatcher();
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}
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$io = new SymfonyStyle($input, $output);
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$options = [];
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if ($event = $input->getArgument('event')) {
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if (!$this->dispatcher->hasListeners($event)) {
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$io->getErrorStyle()->warning(sprintf('The event "%s" does not have any registered listeners.', $event));
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return;
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}
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$options = ['event' => $event];
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}
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$helper = new DescriptorHelper();
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$options['format'] = $input->getOption('format');
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$options['raw_text'] = $input->getOption('raw');
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$options['output'] = $io;
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$helper->describe($io, $this->dispatcher, $options);
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}
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/**
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* Loads the Event Dispatcher from the container.
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*
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* BC to removed in 4.0
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*
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* @return EventDispatcherInterface
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*/
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protected function getEventDispatcher()
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{
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return $this->getContainer()->get('event_dispatcher');
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}
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}
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