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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2015 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Command\ListCommand;
use Symfony\Component\Console\Input\InputInterface;
/**
* Constant Enumerator class.
*/
class ConstantEnumerator extends Enumerator
{
/**
* {@inheritdoc}
*/
protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
{
// only list constants when no Reflector is present.
//
// TODO: make a NamespaceReflector and pass that in for commands like:
//
// ls --constants Foo
//
// ... for listing constants in the Foo namespace
if ($reflector !== null || $target !== null) {
return;
}
// only list constants if we are specifically asked
if (!$input->getOption('constants')) {
return;
}
$category = $input->getOption('user') ? 'user' : $input->getOption('category');
$label = $category ? ucfirst($category) . ' Constants' : 'Constants';
$constants = $this->prepareConstants($this->getConstants($category));
if (empty($constants)) {
return;
}
$ret = array();
$ret[$label] = $constants;
return $ret;
}
/**
* Get defined constants.
*
* Optionally restrict constants to a given category, e.g. "date".
*
* @param string $category
*
* @return array
*/
protected function getConstants($category = null)
{
if (!$category) {
return get_defined_constants();
}
$consts = get_defined_constants(true);
return isset($consts[$category]) ? $consts[$category] : array();
}
/**
* Prepare formatted constant array.
*
* @param array $constants
*
* @return array
*/
protected function prepareConstants(array $constants)
{
// My kingdom for a generator.
$ret = array();
$names = array_keys($constants);
natcasesort($names);
foreach ($names as $name) {
if ($this->showItem($name)) {
$ret[$name] = array(
'name' => $name,
'style' => self::IS_CONSTANT,
'value' => $this->presentRef($constants[$name]),
);
}
}
return $ret;
}
}