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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\Finder\Adapter;
/**
* Interface for finder engine implementations.
*
* @author Jean-François Simon <contact@jfsimon.fr>
*/
abstract class AbstractAdapter implements AdapterInterface
{
protected $followLinks = false;
protected $mode = 0;
protected $minDepth = 0;
protected $maxDepth = PHP_INT_MAX;
protected $exclude = array();
protected $names = array();
protected $notNames = array();
protected $contains = array();
protected $notContains = array();
protected $sizes = array();
protected $dates = array();
protected $filters = array();
protected $sort = false;
protected $paths = array();
protected $notPaths = array();
protected $ignoreUnreadableDirs = false;
private static $areSupported = array();
/**
* {@inheritDoc}
*/
public function isSupported()
{
$name = $this->getName();
if (!array_key_exists($name, self::$areSupported)) {
self::$areSupported[$name] = $this->canBeUsed();
}
return self::$areSupported[$name];
}
/**
* {@inheritdoc}
*/
public function setFollowLinks($followLinks)
{
$this->followLinks = $followLinks;
return $this;
}
/**
* {@inheritdoc}
*/
public function setMode($mode)
{
$this->mode = $mode;
return $this;
}
/**
* {@inheritdoc}
*/
public function setDepths(array $depths)
{
$this->minDepth = 0;
$this->maxDepth = PHP_INT_MAX;
foreach ($depths as $comparator) {
switch ($comparator->getOperator()) {
case '>':
$this->minDepth = $comparator->getTarget() + 1;
break;
case '>=':
$this->minDepth = $comparator->getTarget();
break;
case '<':
$this->maxDepth = $comparator->getTarget() - 1;
break;
case '<=':
$this->maxDepth = $comparator->getTarget();
break;
default:
$this->minDepth = $this->maxDepth = $comparator->getTarget();
}
}
return $this;
}
/**
* {@inheritdoc}
*/
public function setExclude(array $exclude)
{
$this->exclude = $exclude;
return $this;
}
/**
* {@inheritdoc}
*/
public function setNames(array $names)
{
$this->names = $names;
return $this;
}
/**
* {@inheritdoc}
*/
public function setNotNames(array $notNames)
{
$this->notNames = $notNames;
return $this;
}
/**
* {@inheritdoc}
*/
public function setContains(array $contains)
{
$this->contains = $contains;
return $this;
}
/**
* {@inheritdoc}
*/
public function setNotContains(array $notContains)
{
$this->notContains = $notContains;
return $this;
}
/**
* {@inheritdoc}
*/
public function setSizes(array $sizes)
{
$this->sizes = $sizes;
return $this;
}
/**
* {@inheritdoc}
*/
public function setDates(array $dates)
{
$this->dates = $dates;
return $this;
}
/**
* {@inheritdoc}
*/
public function setFilters(array $filters)
{
$this->filters = $filters;
return $this;
}
/**
* {@inheritdoc}
*/
public function setSort($sort)
{
$this->sort = $sort;
return $this;
}
/**
* {@inheritdoc}
*/
public function setPath(array $paths)
{
$this->paths = $paths;
return $this;
}
/**
* {@inheritdoc}
*/
public function setNotPath(array $notPaths)
{
$this->notPaths = $notPaths;
return $this;
}
/**
* {@inheritdoc}
*/
public function ignoreUnreadableDirs($ignore = true)
{
$this->ignoreUnreadableDirs = (Boolean) $ignore;
return $this;
}
/**
* Returns whether the adapter is supported in the current environment.
*
* This method should be implemented in all adapters. Do not implement
* isSupported in the adapters as the generic implementation provides a cache
* layer.
*
* @see isSupported
*
* @return Boolean Whether the adapter is supported
*/
abstract protected function canBeUsed();
}