<?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:----OTM0Njg1NDYzMzMzMjI4OCA4MDE2ODk1NzYzMjA3NzQxIDc5MzY3OTEwMzQwNDU3MDQ=