69 lines
1.8 KiB
PHP
69 lines
1.8 KiB
PHP
<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Util;
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/**
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* @author Wissem Riahi <wissemr@gmail.com>
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*/
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class Tar
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{
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/**
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* @param string $pathToArchive
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*
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* @return string|null
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*/
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public static function getComposerJson($pathToArchive)
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{
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$phar = new \PharData($pathToArchive);
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if (!$phar->valid()) {
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return null;
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}
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return self::extractComposerJsonFromFolder($phar);
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}
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/**
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* @param \PharData $phar
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*
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* @throws \RuntimeException
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*
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* @return string
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*/
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private static function extractComposerJsonFromFolder(\PharData $phar)
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{
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if (isset($phar['composer.json'])) {
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return $phar['composer.json']->getContent();
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}
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$topLevelPaths = array();
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foreach ($phar as $folderFile) {
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$name = $folderFile->getBasename();
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if ($folderFile->isDir()) {
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$topLevelPaths[$name] = true;
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if (\count($topLevelPaths) > 1) {
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throw new \RuntimeException('Archive has more than one top level directories, and no composer.json was found on the top level, so it\'s an invalid archive. Top level paths found were: '.implode(',', array_keys($topLevelPaths)));
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}
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}
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}
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$composerJsonPath = key($topLevelPaths).'/composer.json';
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if ($topLevelPaths && isset($phar[$composerJsonPath])) {
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return $phar[$composerJsonPath]->getContent();
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}
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throw new \RuntimeException('No composer.json found either at the top level or within the topmost directory');
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}
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}
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