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<?php
/**
* An abstract filter class for checking files and folders against exact matches.
*
* Supports both whitelists and blacklists.
*
* @author Greg Sherwood <gsherwood@squiz.net>
* @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
* @license https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
*/
namespace PHP_CodeSniffer\Filters;
use PHP_CodeSniffer\Util;
abstract class ExactMatch extends Filter
{
/**
* A list of files to exclude.
*
* @var array
*/
private $blacklist = null;
/**
* A list of files to include.
*
* If the whitelist is empty, only files in the blacklist will be excluded.
*
* @var array
*/
private $whitelist = null;
/**
* Check whether the current element of the iterator is acceptable.
*
* If a file is both blacklisted and whitelisted, it will be deemed unacceptable.
*
* @return bool
*/
public function accept()
{
if (parent::accept() === false) {
return false;
}
if ($this->blacklist === null) {
$this->blacklist = $this->getblacklist();
}
if ($this->whitelist === null) {
$this->whitelist = $this->getwhitelist();
}
$filePath = Util\Common::realpath($this->current());
// If file is both blacklisted and whitelisted, the blacklist takes precedence.
if (isset($this->blacklist[$filePath]) === true) {
return false;
}
if (empty($this->whitelist) === true && empty($this->blacklist) === false) {
// We are only checking a blacklist, so everything else should be whitelisted.
return true;
}
return isset($this->whitelist[$filePath]);
}//end accept()
/**
* Returns an iterator for the current entry.
*
* Ensures that the blacklist and whitelist are preserved so they don't have
* to be generated each time.
*
* @return \RecursiveIterator
*/
public function getChildren()
{
$children = parent::getChildren();
$children->blacklist = $this->blacklist;
$children->whitelist = $this->whitelist;
return $children;
}//end getChildren()
/**
* Get a list of blacklisted file paths.
*
* @return array
*/
abstract protected function getBlacklist();
/**
* Get a list of whitelisted file paths.
*
* @return array
*/
abstract protected function getWhitelist();
}//end class