Liip\ImagineBundle\Binary\Locator\FileSystemLocator

Complexity

Total Complexity

20

Size/Duplication

Total Lines	131
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes

0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	setOptions()	0	13	2
A	locate()	0	13	3
A	locateUsingRootPathsSearch()	0	10	3
A	locateUsingRootPlaceholder()	0	13	4
A	generateAbsolutePath()	0	4	1
A	sanitizeRootPath()	0	8	3
A	sanitizeAbsolutePath()	0	11	3

<?php

/*
 * This file is part of the `liip/LiipImagineBundle` project.
 *
 * (c) https://github.com/liip/LiipImagineBundle/graphs/contributors
 *
 * For the full copyright and license information, please view the LICENSE.md
 * file that was distributed with this source code.
 */

namespace Liip\ImagineBundle\Binary\Locator;

use Liip\ImagineBundle\Exception\Binary\Loader\NotLoadableException;
use Liip\ImagineBundle\Exception\InvalidArgumentException;
use Symfony\Component\OptionsResolver\Exception\ExceptionInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class FileSystemLocator implements LocatorInterface
{
    /**
     * @var string[]
     */
    private $roots = array();

    public function __construct(array $dataRoots = array())
    {
        $this->setOptions(array('roots' => $dataRoots));
    }

    /**
     * @param array[] $options
     */
    public function setOptions(array $options = array())
    {
        $resolver = new OptionsResolver();
        $resolver->setDefaults(array('roots' => array()));

        try {
            $options = $resolver->resolve($options);
        } catch (ExceptionInterface $e) {
            throw new InvalidArgumentException(sprintf('Invalid options provided to %s()', __METHOD__), null, $e);
        }

        $this->roots = array_map(array($this, 'sanitizeRootPath'), (array) $options['roots']);
    }

    /**
     * @param string $path
     *
     * @throws NotLoadableException
     *
     * @return string
     */
    public function locate($path)
    {
        if (false !== $absolute = $this->locateUsingRootPlaceholder($path)) {
            return $this->sanitizeAbsolutePath($absolute);
        }

        if (false !== $absolute = $this->locateUsingRootPathsSearch($path)) {
            return $this->sanitizeAbsolutePath($absolute);
        }

        throw new NotLoadableException(sprintf('Source image not resolvable "%s" in root path(s) "%s"',
            $path, implode(':', $this->roots)));
    }

    /**
     * @param string $path
     *
     * @return bool|string
     */
    private function locateUsingRootPathsSearch($path)
    {
        foreach ($this->roots as $root) {
            if (false !== $absolute = $this->generateAbsolutePath($root, $path)) {
                return $absolute;
            }
        }

        return false;
    }

    /**
     * @param string $path
     *
     * @return bool|string
     */
    private function locateUsingRootPlaceholder($path)
    {
        if (0 !== strpos($path, '@') || 1 !== preg_match('{@(?<name>[^:]+):(?<path>.+)}', $path, $matches)) {
            return false;
        }

        if (isset($this->roots[$matches['name']])) {
            return $this->generateAbsolutePath($this->roots[$matches['name']], $matches['path']);
        }

        throw new NotLoadableException(sprintf('Invalid root placeholder "%s" for path "%s"',
            $matches['name'], $matches['path']));
    }

    /**
     * @param string $root
     * @param string $path
     *
     * @return string|false
     */
    protected function generateAbsolutePath($root, $path)
    {
        return realpath($root.DIRECTORY_SEPARATOR.$path);
    }

    /**
     * @param string $root
     *
     * @throws InvalidArgumentException
     *
     * @return string
     */
    private function sanitizeRootPath($root)
    {
        if (!empty($root) && false !== $realRoot = realpath($root)) {
            return $realRoot;
        }

        throw new InvalidArgumentException(sprintf('Root image path not resolvable "%s"', $root));
    }

    /**
     * @param string $path
     *
     * @throws NotLoadableException
     *
     * @return string
     */
    private function sanitizeAbsolutePath($path)
    {
        foreach ($this->roots as $root) {
            if (0 === strpos($path, $root)) {
                return $path;
            }
        }

        throw new NotLoadableException(sprintf('Source image invalid "%s" as it is outside of the defined root path(s) "%s"',
            $path, implode(':', $this->roots)));
    }
}