/**
* Returns composer instance.
*
* @param bool $packagist
* @return null
*/
protected function getComposer($packagist = false)
{
$config = $this->blueprint;
$config['config'] = ['vendor-dir' => $this->paths['path.packages'], 'cache-files-ttl' => 0];
$config['require'] = $this->packages;
if (!$packagist) {
$config['repositories'][] = ['packagist' => false];
}
// set memory limit, if < 512M
$memory = trim(ini_get('memory_limit'));
if ($memory != -1 && $this->memoryInBytes($memory) < 512 * 1024 * 1024) {
@ini_set('memory_limit', '512M');
}
Factory::bootstrap(['home' => $this->paths['path.temp'] . '/composer', 'cache-dir' => $this->paths['path.temp'] . '/composer/cache']);
$composer = Factory::create($this->getIO(), $config);
$composer->setLocker(new Locker($this->getIO(), new JsonFile(preg_replace('/\\.php$/i', '.lock', $this->file)), $composer->getRepositoryManager(), $composer->getInstallationManager(), json_encode($config)));
return $composer;
}
