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<?php /* * This file is part of Composer. * * (c) Nils Adermann <[email protected]> * Jordi Boggiano <[email protected]> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Composer\Util; /** * @author Wissem Riahi <[email protected]> */ class Tar { /** * @param string $pathToArchive * * @return string|null */ public static function getComposerJson($pathToArchive) { $phar = new \PharData($pathToArchive); if (!$phar->valid()) { return null; } return self::extractComposerJsonFromFolder($phar); } /** * @param \PharData $phar * * @throws \RuntimeException * * @return string */ private static function extractComposerJsonFromFolder(\PharData $phar) { if (isset($phar['composer.json'])) { return $phar['composer.json']->getContent(); } $topLevelPaths = array(); foreach ($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'); } }