Viewing file:  HelpCommand.php (2.99 KB) -rwxrwxr-x
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Console\Command;
use Symfony\Component\Console\Completion\CompletionInput;
use Symfony\Component\Console\Completion\CompletionSuggestions;
use Symfony\Component\Console\Descriptor\ApplicationDescription;
use Symfony\Component\Console\Helper\DescriptorHelper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
/**
* HelpCommand displays the help for a given command.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class HelpCommand extends Command
{
private $command;
/**
* {@inheritdoc}
*/
protected function configure()
{
$this->ignoreValidationErrors();
$this
->setName('help')
->setDefinition([
new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', 'help'),
new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw command help'),
])
->setDescription('Display help for a command')
->setHelp(<<<'EOF'
The <info>%command.name%</info> command displays help for a given command:
<info>%command.full_name% list</info>
You can also output the help in other formats by using the <comment>--format</comment> option:
<info>%command.full_name% --format=xml list</info>
To display the list of available commands, please use the <info>list</info> command.
EOF
)
;
}
public function setCommand(Command $command)
{
$this->command = $command;
}
/**
* {@inheritdoc}
*/
protected function execute(InputInterface $input, OutputInterface $output): int
{
$this->command ??= $this->getApplication()->find($input->getArgument('command_name'));
$helper = new DescriptorHelper();
$helper->describe($output, $this->command, [
'format' => $input->getOption('format'),
'raw_text' => $input->getOption('raw'),
]);
unset($this->command);
return 0;
}
public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void
{
if ($input->mustSuggestArgumentValuesFor('command_name')) {
$descriptor = new ApplicationDescription($this->getApplication());
$suggestions->suggestValues(array_keys($descriptor->getCommands()));
return;
}
if ($input->mustSuggestOptionValuesFor('format')) {
$helper = new DescriptorHelper();
$suggestions->suggestValues($helper->getFormats());
}
}
}
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