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258 lines
8.4 KiB
PHP
258 lines
8.4 KiB
PHP
<?php declare(strict_types=1);
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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\Repository\Vcs;
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use Composer\Pcre\Preg;
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use Composer\Util\Platform;
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use Composer\Util\ProcessExecutor;
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use Composer\Util\Filesystem;
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use Composer\Util\Url;
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use Composer\Util\Git as GitUtil;
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use Composer\IO\IOInterface;
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use Composer\Cache;
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use Composer\Config;
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/**
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* @author Jordi Boggiano <j.boggiano@seld.be>
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*/
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class GitDriver extends VcsDriver
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{
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/** @var array<int|string, string> Map of tag name (can be turned to an int by php if it is a numeric name) to identifier */
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protected $tags;
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/** @var array<int|string, string> Map of branch name (can be turned to an int by php if it is a numeric name) to identifier */
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protected $branches;
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/** @var string */
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protected $rootIdentifier;
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/** @var string */
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protected $repoDir;
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/**
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* @inheritDoc
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*/
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public function initialize(): void
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{
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if (Filesystem::isLocalPath($this->url)) {
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$this->url = Preg::replace('{[\\/]\.git/?$}', '', $this->url);
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if (!is_dir($this->url)) {
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throw new \RuntimeException('Failed to read package information from '.$this->url.' as the path does not exist');
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}
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$this->repoDir = $this->url;
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$cacheUrl = realpath($this->url);
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} else {
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if (!Cache::isUsable($this->config->get('cache-vcs-dir'))) {
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throw new \RuntimeException('GitDriver requires a usable cache directory, and it looks like you set it to be disabled');
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}
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$this->repoDir = $this->config->get('cache-vcs-dir') . '/' . Preg::replace('{[^a-z0-9.]}i', '-', $this->url) . '/';
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GitUtil::cleanEnv();
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$fs = new Filesystem();
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$fs->ensureDirectoryExists(dirname($this->repoDir));
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if (!is_writable(dirname($this->repoDir))) {
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throw new \RuntimeException('Can not clone '.$this->url.' to access package information. The "'.dirname($this->repoDir).'" directory is not writable by the current user.');
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}
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if (Preg::isMatch('{^ssh://[^@]+@[^:]+:[^0-9]+}', $this->url)) {
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throw new \InvalidArgumentException('The source URL '.$this->url.' is invalid, ssh URLs should have a port number after ":".'."\n".'Use ssh://git@example.com:22/path or just git@example.com:path if you do not want to provide a password or custom port.');
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}
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$gitUtil = new GitUtil($this->io, $this->config, $this->process, $fs);
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if (!$gitUtil->syncMirror($this->url, $this->repoDir)) {
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if (!is_dir($this->repoDir)) {
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throw new \RuntimeException('Failed to clone '.$this->url.' to read package information from it');
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}
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$this->io->writeError('<error>Failed to update '.$this->url.', package information from this repository may be outdated</error>');
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}
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$cacheUrl = $this->url;
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}
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$this->getTags();
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$this->getBranches();
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$this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', Url::sanitize($cacheUrl)));
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$this->cache->setReadOnly($this->config->get('cache-read-only'));
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}
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/**
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* @inheritDoc
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*/
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public function getRootIdentifier(): string
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{
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if (null === $this->rootIdentifier) {
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$this->rootIdentifier = 'master';
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$gitUtil = new GitUtil($this->io, $this->config, $this->process, new Filesystem());
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$defaultBranch = $gitUtil->getMirrorDefaultBranch($this->url, $this->repoDir, Filesystem::isLocalPath($this->url));
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if ($defaultBranch !== null) {
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return $this->rootIdentifier = $defaultBranch;
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}
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// select currently checked out branch if master is not available
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$this->process->execute('git branch --no-color', $output, $this->repoDir);
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$branches = $this->process->splitLines($output);
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if (!in_array('* master', $branches)) {
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foreach ($branches as $branch) {
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if ($branch && Preg::isMatch('{^\* +(\S+)}', $branch, $match)) {
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$this->rootIdentifier = $match[1];
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break;
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}
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}
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}
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}
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return $this->rootIdentifier;
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}
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/**
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* @inheritDoc
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*/
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public function getUrl(): string
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{
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return $this->url;
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}
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/**
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* @inheritDoc
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*/
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public function getSource(string $identifier): array
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{
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return array('type' => 'git', 'url' => $this->getUrl(), 'reference' => $identifier);
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}
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/**
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* @inheritDoc
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*/
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public function getDist(string $identifier): ?array
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{
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return null;
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}
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/**
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* @inheritDoc
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*/
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public function getFileContent(string $file, string $identifier): ?string
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{
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if (isset($identifier[0]) && $identifier[0] === '-') {
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throw new \RuntimeException('Invalid git identifier detected. Identifier must not start with a -, given: ' . $identifier);
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}
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$resource = sprintf('%s:%s', ProcessExecutor::escape($identifier), ProcessExecutor::escape($file));
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$this->process->execute(sprintf('git show %s', $resource), $content, $this->repoDir);
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if (!trim($content)) {
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return null;
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}
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return $content;
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}
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/**
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* @inheritDoc
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*/
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public function getChangeDate(string $identifier): ?\DateTimeImmutable
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{
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$this->process->execute(sprintf(
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'git -c log.showSignature=false log -1 --format=%%at %s',
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ProcessExecutor::escape($identifier)
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), $output, $this->repoDir);
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return new \DateTimeImmutable('@'.trim($output), new \DateTimeZone('UTC'));
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}
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/**
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* @inheritDoc
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*/
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public function getTags(): array
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{
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if (null === $this->tags) {
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$this->tags = array();
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$this->process->execute('git show-ref --tags --dereference', $output, $this->repoDir);
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foreach ($output = $this->process->splitLines($output) as $tag) {
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if ($tag && Preg::isMatch('{^([a-f0-9]{40}) refs/tags/(\S+?)(\^\{\})?$}', $tag, $match)) {
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$this->tags[$match[2]] = (string) $match[1];
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}
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}
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}
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return $this->tags;
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}
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/**
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* @inheritDoc
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*/
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public function getBranches(): array
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{
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if (null === $this->branches) {
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$branches = array();
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$this->process->execute('git branch --no-color --no-abbrev -v', $output, $this->repoDir);
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foreach ($this->process->splitLines($output) as $branch) {
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if ($branch && !Preg::isMatch('{^ *[^/]+/HEAD }', $branch)) {
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if (Preg::isMatch('{^(?:\* )? *(\S+) *([a-f0-9]+)(?: .*)?$}', $branch, $match) && $match[1][0] !== '-') {
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$branches[$match[1]] = $match[2];
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}
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}
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}
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$this->branches = $branches;
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}
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return $this->branches;
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}
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/**
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* @inheritDoc
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*/
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public static function supports(IOInterface $io, Config $config, string $url, bool $deep = false): bool
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{
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if (Preg::isMatch('#(^git://|\.git/?$|git(?:olite)?@|//git\.|//github.com/)#i', $url)) {
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return true;
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}
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// local filesystem
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if (Filesystem::isLocalPath($url)) {
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$url = Filesystem::getPlatformPath($url);
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if (!is_dir($url)) {
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return false;
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}
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$process = new ProcessExecutor($io);
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// check whether there is a git repo in that path
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if ($process->execute('git tag', $output, $url) === 0) {
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return true;
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}
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}
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if (!$deep) {
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return false;
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}
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$gitUtil = new GitUtil($io, $config, new ProcessExecutor($io), new Filesystem());
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GitUtil::cleanEnv();
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try {
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$gitUtil->runCommand(function ($url): string {
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return 'git ls-remote --heads -- ' . ProcessExecutor::escape($url);
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}, $url, sys_get_temp_dir());
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} catch (\RuntimeException $e) {
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return false;
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}
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return true;
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}
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}
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