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<?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\Repository\Vcs;
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use Composer\Config;
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use Composer\Cache;
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use Composer\IO\IOInterface;
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use Composer\Json\JsonFile;
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use Composer\Downloader\TransportException;
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use Composer\Util\RemoteFilesystem;
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/**
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* Driver for GitLab API, use the Git driver for local checkouts.
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*
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* @author Henrik Bjørnskov <henrik@bjrnskov.dk>
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* @author Jérôme Tamarelle <jerome@tamarelle.net>
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*/
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class GitLabDriver extends VcsDriver
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{
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private $scheme;
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private $owner;
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private $repository;
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private $cache;
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private $infoCache = array();
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/**
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* @var array Project data returned by GitLab API
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*/
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private $project;
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/**
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* @var array Keeps commits returned by GitLab API
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*/
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private $commits = array();
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/**
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* @var array List of tag => reference
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*/
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private $tags;
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/**
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* @var array List of branch => reference
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*/
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private $branches;
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/**
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* Extracts information from the repository url.
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* SSH urls are not supported in order to know the HTTP sheme to use.
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*
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* {@inheritDoc}
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*/
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public function initialize()
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{
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if (!preg_match('#^(https?)://([^/]+)/([^/]+)/([^/]+)(?:\.git|/)?$#', $this->url, $match)) {
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throw new \InvalidArgumentException('The URL provided is invalid. It must be the HTTP URL of a GitLab project.');
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}
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$this->scheme = $match[1];
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$this->originUrl = $match[2];
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$this->owner = $match[3];
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$this->repository = preg_replace('#(\.git)$#', '', $match[4]);
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$this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.$this->originUrl.'/'.$this->owner.'/'.$this->repository);
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$this->fetchProject();
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}
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/**
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* Updates the RemoteFilesystem instance.
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* Mainly useful for tests.
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*
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* @internal
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*/
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public function setRemoteFilesystem(RemoteFilesystem $remoteFilesystem)
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{
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$this->remoteFilesystem = $remoteFilesystem;
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}
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/**
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* Fetches the composer.json file from the project by a identifier.
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*
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* if specific keys arent present it will try and infer them by default values.
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*
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* {@inheritDoc}
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*/
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public function getComposerInformation($identifier)
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{
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// Convert the root identifier to a cachable commit id
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if (!preg_match('{[a-f0-9]{40}}i', $identifier)) {
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$branches = $this->getBranches();
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if (isset($branches[$identifier])) {
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$identifier = $branches[$identifier];
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}
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}
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if (isset($this->infoCache[$identifier])) {
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return $this->infoCache[$identifier];
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}
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if (preg_match('{[a-f0-9]{40}}i', $identifier) && $res = $this->cache->read($identifier)) {
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return $this->infoCache[$identifier] = JsonFile::parseJson($res, $res);
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}
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try {
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$composer = $this->fetchComposerFile($identifier);
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} catch (TransportException $e) {
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if ($e->getCode() !== 404) {
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throw $e;
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}
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$composer = false;
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}
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if ($composer && !isset($composer['time']) && isset($this->commits[$identifier])) {
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$composer['time'] = $this->commits[$identifier]['committed_date'];
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}
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if (preg_match('{[a-f0-9]{40}}i', $identifier)) {
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$this->cache->write($identifier, json_encode($composer));
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}
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return $this->infoCache[$identifier] = $composer;
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}
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/**
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* {@inheritDoc}
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*/
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public function getRepositoryUrl()
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{
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return $this->project['ssh_url_to_repo'];
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}
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/**
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* {@inheritDoc}
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*/
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public function getUrl()
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{
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return $this->project['web_url'];
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}
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/**
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* {@inheritDoc}
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*/
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public function getDist($identifier)
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{
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$url = $this->getApiUrl().'/repository/archive.zip?sha='.$identifier;
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return array('type' => 'zip', 'url' => $url, 'reference' => $identifier, 'shasum' => '');
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}
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/**
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* {@inheritDoc}
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*/
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public function getSource($identifier)
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{
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return array('type' => 'git', 'url' => $this->getRepositoryUrl(), '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 getRootIdentifier()
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{
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return $this->project['default_branch'];
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}
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/**
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* {@inheritDoc}
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*/
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public function getBranches()
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{
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if (!$this->branches) {
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$this->branches = $this->getReferences('branches');
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}
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return $this->branches;
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}
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/**
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* {@inheritDoc}
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*/
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public function getTags()
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{
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if (!$this->tags) {
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$this->tags = $this->getReferences('tags');
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}
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return $this->tags;
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}
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/**
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* Fetches composer.json file from the repository through api.
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*
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* @param string $identifier
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*
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* @return array
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*/
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protected function fetchComposerFile($identifier)
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{
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$resource = $this->getApiUrl().'/repository/blobs/'.$identifier.'?filepath=composer.json';
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return JsonFile::parseJson($this->getContents($resource), $resource);
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}
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/**
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* @return string Base URL for GitLab API v3
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*/
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public function getApiUrl()
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{
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return $this->scheme.'://'.$this->originUrl.'/api/v3/projects/'.$this->owner.'%2F'.$this->repository;
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}
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/**
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* @param string $type
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*
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* @return string[] where keys are named references like tags or branches and the value a sha
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*/
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protected function getReferences($type)
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{
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$resource = $this->getApiUrl().'/repository/'.$type;
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$data = JsonFile::parseJson($this->getContents($resource), $resource);
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$references = array();
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foreach ($data as $datum) {
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$references[$datum['name']] = $datum['commit']['id'];
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// Keep the last commit date of a reference to avoid
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// unnecessary API call when retrieving the composer file.
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$this->commits[$datum['commit']['id']] = $datum['commit'];
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}
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return $references;
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}
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protected function fetchProject()
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{
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// we need to fetch the default branch from the api
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$resource = $this->getApiUrl();
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$this->project = JsonFile::parseJson($this->getContents($resource), $resource);
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}
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/**
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* Uses the config `gitlab-domains` to see if the driver supports the url for the
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* repository given.
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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, $url, $deep = false)
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{
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if (!preg_match('#^(https?)://([^/]+)/([^/]+)/([^/]+)(?:\.git|/)?$#', $url, $match)) {
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return false;
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}
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$scheme = $match[1];
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$originUrl = $match[2];
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if (!in_array($originUrl, (array) $config->get('gitlab-domains'))) {
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return false;
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}
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if ('https' === $scheme && !extension_loaded('openssl')) {
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if ($io->isVerbose()) {
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$io->write('Skipping GitLab driver for '.$url.' because the OpenSSL PHP extension is missing.');
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}
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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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