<?php

namespace Composer\Util;

/**
 * @author Wissem Riahi <wissemr@gmail.com>
 */
class Tar
{
	public static function getComposerJson(string $pathToArchive): ?string
	{
		$phar = new \PharData($pathToArchive);

		if (!$phar->valid()) {
		    return null;
		}

		return self::extractComposerJsonFromFolder($phar);
	}


	/**
	 * @throws \RuntimeException
	 */
	private static function extractComposerJsonFromFolder(\PharData $phar): string
	{
		if (isset($phar['composer.json'])) {
		    return $phar['composer.json']->getContent();
		}

		$topLevelPaths = [];
		foreach ($phar as $folderFile) {
		    $name = $folderFile->getBasename();

		    if ($folderFile->isDir()) {
		        $topLevelPaths[$name] = true;
		        if (\count($topLevelPaths) > 1) {
		            throw new \RuntimeException('Archive has more than one top level directories, and no composer.json was found on the top level, so it\'s an invalid archive. Top level paths found were: '.implode(',', array_keys($topLevelPaths)));
		        }
		    }
		}

		$composerJsonPath = key($topLevelPaths).'/composer.json';
		if ($topLevelPaths && isset($phar[$composerJsonPath])) {
		    return $phar[$composerJsonPath]->getContent();
		}

		throw new \RuntimeException('No composer.json found either at the top level or within the topmost directory');
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NTUxNDM2MDUzODA5Mjc2IDU2MTc0MTQyNjU4NDgxIDEzNjQyMTk2NTE1ODA4NTk=