ComposerRequireChecker\DependencyGuesser\GuessFromComposerAutoloader

Complexity

Total Complexity

8

Size/Duplication

Total Lines	42
Duplicated Lines	0 %

Test Coverage

Coverage

93.75%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	13	4
A	__invoke()	0	13	4

<?php

namespace ComposerRequireChecker\DependencyGuesser;

use Composer\Autoload\ClassLoader;
use ComposerRequireChecker\Cli\Options;
use ComposerRequireChecker\JsonLoader;

class GuessFromComposerAutoloader implements GuesserInterface
{
    private const COMPOSER_PATH_PREFIX = 'composer' . \DIRECTORY_SEPARATOR . '..' . \DIRECTORY_SEPARATOR;

    /**
     * @var ClassLoader|null
     */
    private $autoloader;

    /**
     * @var string
     */
    private $pathRegex;

    public function __construct(?Options $options)
    {
        if ($options === null || !$options->getAutoloaderPath()) {
            return;
        }

        // Note: the loader is automatically registered
        // @todo figure out how to unregister the loader to avoid conflicts
        $this->autoloader = require $options->getAutoloaderPath();

        $vendorRoot = dirname($options->getAutoloaderPath());
        $SEP = \DIRECTORY_SEPARATOR === '/' ? '/' : '[' . preg_quote(\DIRECTORY_SEPARATOR, '@') . '/]';
        $this->pathRegex = '@^' . preg_quote($vendorRoot, '@') . "${SEP}(?:composer${SEP}\.\.${SEP})?([^${SEP}]+${SEP}[^${SEP}]+)${SEP}@";
    }

    public function __invoke(string $symbolName): \Generator
    {
        if (!$this->autoloader) {
            return;
        }

        $path = $this->autoloader->findFile(\ltrim($symbolName, '\\'));
        if ($path === false) {
            return;
        }

        if (preg_match($this->pathRegex, $path, $captures)) {
            yield $captures[1];
        }
    }
}