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Filename : EventLogger.php
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<?php declare(strict_types=1);
/*
 * This file is part of PHPUnit.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace PHPUnit\Logging;

use const FILE_APPEND;
use const LOCK_EX;
use const PHP_EOL;
use const PHP_OS_FAMILY;
use function file_put_contents;
use function implode;
use function preg_split;
use function str_repeat;
use function strlen;
use PHPUnit\Event\Event;
use PHPUnit\Event\Tracer\Tracer;

/**
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
 *
 * @internal This class is not covered by the backward compatibility promise for PHPUnit
 */
final readonly class EventLogger implements Tracer
{
    private string $path;
    private bool $includeTelemetryInfo;

    public function __construct(string $path, bool $includeTelemetryInfo)
    {
        $this->path                 = $path;
        $this->includeTelemetryInfo = $includeTelemetryInfo;
    }

    public function trace(Event $event): void
    {
        $telemetryInfo = $this->telemetryInfo($event);
        $indentation   = PHP_EOL . str_repeat(' ', strlen($telemetryInfo));
        $lines         = preg_split('/\r\n|\r|\n/', $event->asString());

        $flags = FILE_APPEND;

        if (!(PHP_OS_FAMILY === 'Windows' || PHP_OS_FAMILY === 'Darwin') ||
            $this->path !== 'php://stdout') {
            $flags |= LOCK_EX;
        }

        file_put_contents(
            $this->path,
            $telemetryInfo . implode($indentation, $lines) . PHP_EOL,
            $flags,
        );
    }

    private function telemetryInfo(Event $event): string
    {
        if (!$this->includeTelemetryInfo) {
            return '';
        }

        return $event->telemetryInfo()->asString() . ' ';
    }
}