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<?php
declare(strict_types=1);
namespace Benrowe\Fqcn;
use Benrowe\Fqcn\Value\Psr4Namespace;
/**
* PathBuilder
*
* Build a path based on a namespace and the directory it's mapped to
* @package Benrowe\Fqcn
*/
class PathBuilder
{
private $namespace;
private $path;
* Constructor
* Take in the path & the psr4 namespace it represents
* @param string $path [description]
* @param Psr4Namespace $namespace [description]
public function __construct(string $path, Psr4Namespace $namespace)
if (!is_dir($path)) {
throw new Exception('Invalid path');
}
$this->namespace = $namespace;
$this->path = $path;
* Get the absolute directory of the provided namespace, relative to the initial
* path/namespace
* @param Psr4Namespace $namespace The namespace you want the directory for
* @return string the absolute directory path, empty if it does not exist!
public function resolve(Psr4Namespace $namespace): string
if (!$namespace->startsWith($this->namespace)) {
throw new Exception($namespace->getValue() . ' is not from the same base as ' . $this->namespace->getValue());
$relFqn = substr($namespace->getValue(), strlen($this->namespace->getValue()));
$relPath = $this->nsToPath($relFqn);
$absPath = realpath($this->path . DIRECTORY_SEPARATOR . $relPath);
return $absPath ?: '';
* Convert a namespace to a path equivilent.
* @param string $namespace
* @return string
private function nsToPath(string $namespace): string
return trim(strtr($namespace, [
'\\' => DIRECTORY_SEPARATOR,
'//' => DIRECTORY_SEPARATOR
]), '\\/');
benrowe /
fqcn
