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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2018 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Command;
use Psy\Formatter\DocblockFormatter;
use Psy\Formatter\SignatureFormatter;
use Psy\Input\CodeArgument;
use Psy\Reflection\ReflectionLanguageConstruct;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
/**
* Read the documentation for an object, class, constant, method or property.
*/
class DocCommand extends ReflectingCommand
{
/**
* {@inheritdoc}
*/
protected function configure()
{
$this
->setName('doc')
->setAliases(['rtfm', 'man'])
->setDefinition([
new CodeArgument('target', CodeArgument::REQUIRED, 'Function, class, instance, constant, method or property to document.'),
])
->setDescription('Read the documentation for an object, class, constant, method or property.')
->setHelp(
<<<HELP
Read the documentation for an object, class, constant, method or property.
It's awesome for well-documented code, not quite as awesome for poorly documented code.
e.g.
<return>>>> doc preg_replace</return>
<return>>>> doc Psy\Shell</return>
<return>>>> doc Psy\Shell::debug</return>
<return>>>> \$s = new Psy\Shell</return>
<return>>>> doc \$s->run</return>
HELP
);
}
/**
* {@inheritdoc}
*/
protected function execute(InputInterface $input, OutputInterface $output)
{
$value = $input->getArgument('target');
if (ReflectionLanguageConstruct::isLanguageConstruct($value)) {
$reflector = new ReflectionLanguageConstruct($value);
$doc = $this->getManualDocById($value);
} else {
list($target, $reflector) = $this->getTargetAndReflector($value);
$doc = $this->getManualDoc($reflector) ?: DocblockFormatter::format($reflector);
}
$db = $this->getApplication()->getManualDb();
$output->page(function ($output) use ($reflector, $doc, $db) {
$output->writeln(SignatureFormatter::format($reflector));
$output->writeln('');
if (empty($doc) && !$db) {
$output->writeln('<warning>PHP manual not found</warning>');
$output->writeln(' To document core PHP functionality, download the PHP reference manual:');
$output->writeln(' https://github.com/bobthecow/psysh/wiki/PHP-manual');
} else {
$output->writeln($doc);
}
});
// Set some magic local variables
$this->setCommandScopeVariables($reflector);
return 0;
}
private function getManualDoc($reflector)
{
switch (\get_class($reflector)) {
case 'ReflectionClass':
case 'ReflectionObject':
case 'ReflectionFunction':
$id = $reflector->name;
break;
case 'ReflectionMethod':
$id = $reflector->class . '::' . $reflector->name;
break;
case 'ReflectionProperty':
$id = $reflector->class . '::$' . $reflector->name;
break;
case 'ReflectionClassConstant':
case 'Psy\Reflection\ReflectionClassConstant':
// @todo this is going to collide with ReflectionMethod ids
// someday... start running the query by id + type if the DB
// supports it.
$id = $reflector->class . '::' . $reflector->name;
break;
case 'Psy\Reflection\ReflectionConstant_':
$id = $reflector->name;
break;
default:
return false;
}
return $this->getManualDocById($id);
}
private function getManualDocById($id)
{
if ($db = $this->getApplication()->getManualDb()) {
return $db
->query(\sprintf('SELECT doc FROM php_manual WHERE id = %s', $db->quote($id)))
->fetchColumn(0);
}
}
}