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<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Downloader;
use Composer\Package\PackageInterface;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
/**
* GZip archive downloader.
*
* @author Pavel Puchkin <i@neoascetic.me>
*/
class GzipDownloader extends ArchiveDownloader
{
protected function extract(PackageInterface $package, $file, $path)
{
$filename = pathinfo(parse_url($package->getDistUrl(), PHP_URL_PATH), PATHINFO_FILENAME);
$targetFilepath = $path . DIRECTORY_SEPARATOR . $filename;
// Try to use gunzip on *nix
if (!Platform::isWindows()) {
$command = 'gzip -cd ' . ProcessExecutor::escape($file) . ' > ' . ProcessExecutor::escape($targetFilepath);
if (0 === $this->process->execute($command, $ignoredOutput)) {
return;
}
if (extension_loaded('zlib')) {
// Fallback to using the PHP extension.
$this->extractUsingExt($file, $targetFilepath);
return;
}
$processError = 'Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput();
throw new \RuntimeException($processError);
}
// Windows version of PHP has built-in support of gzip functions
$this->extractUsingExt($file, $targetFilepath);
}
private function extractUsingExt($file, $targetFilepath)
{
$archiveFile = gzopen($file, 'rb');
$targetFile = fopen($targetFilepath, 'wb');
while ($string = gzread($archiveFile, 4096)) {
fwrite($targetFile, $string, Platform::strlen($string));
}
gzclose($archiveFile);
fclose($targetFile);
}
}
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