rector/rules/psr4/src/Composer/PSR4AutoloadPathsProvider.php

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2019-10-13 07:59:52 +02:00
<?php
declare(strict_types=1);
namespace Rector\PSR4\Composer;
use Nette\Utils\Json;
use Symplify\SmartFileSystem\SmartFileSystem;
final class PSR4AutoloadPathsProvider
{
/**
* @var array<string, string[]>
*/
private $cachedComposerJsonPSR4AutoloadPaths = [];
/**
* @var SmartFileSystem
*/
private $smartFileSystem;
public function __construct(SmartFileSystem $smartFileSystem)
{
$this->smartFileSystem = $smartFileSystem;
}
/**
* @return array<string, string[]>
*/
public function provide(): array
{
if ($this->cachedComposerJsonPSR4AutoloadPaths !== []) {
return $this->cachedComposerJsonPSR4AutoloadPaths;
}
$composerJson = $this->readFileToJsonArray($this->getComposerJsonPath());
$psr4Autoloads = array_merge(
$composerJson['autoload']['psr-4'] ?? [],
$composerJson['autoload-dev']['psr-4'] ?? []
);
$this->cachedComposerJsonPSR4AutoloadPaths = $this->removeEmptyNamespaces($psr4Autoloads);
return $this->cachedComposerJsonPSR4AutoloadPaths;
}
/**
* @return mixed[]
*/
private function readFileToJsonArray(string $composerJson): array
{
$composerJsonContent = $this->smartFileSystem->readFile($composerJson);
return Json::decode($composerJsonContent, Json::FORCE_ARRAY);
}
private function getComposerJsonPath(): string
{
// assume the project has "composer.json" in root directory
return getcwd() . '/composer.json';
}
/**
* @param array<string, string[]> $psr4Autoloads
* @return array<string, string[]>
*/
private function removeEmptyNamespaces(array $psr4Autoloads): array
{
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return array_filter($psr4Autoloads, function (string $psr4Autoload): bool {
return $psr4Autoload !== '';
}, ARRAY_FILTER_USE_KEY);
}
}