src/Composer/Downloader/ArchiveDownloader.php
public function download(PackageInterface $package, $path, $output = true)
    {
        $temporaryDir = $this->config->get('vendor-dir').'/composer/'.substr(md5(uniqid('', true)), 0, 8);
        $retries = 3;
        while ($retries--) {
            $fileName = parent::download($package, $path, $output);

            if ($output) {
                $this->io->writeError(' Extracting archive', false, IOInterface::VERBOSE);
            }

            try {
                $this->filesystem->ensureDirectoryExists($temporaryDir);
                try {
                    $this->extract($fileName, $temporaryDir);
                } catch (\Exception $e) {
                    // remove cache if the file was corrupted
                    parent::clearLastCacheWrite($package);
                    throw $e;
                }

                $this->filesystem->unlink($fileName);

                $contentDir = $this->getFolderContent($temporaryDir);

                // only one dir in the archive, extract its contents out of it
                if (1 === count($contentDir) && is_dir(reset($contentDir))) {
                    $contentDir = $this->getFolderContent((string) reset($contentDir));
                }

                // move files back out of the temp dir
                foreach ($contentDir as $file) {
                    $file = (string) $file;
                    $this->filesystem->rename($file, $path . '/' . basename($file));
                }

                $this->filesystem->removeDirectory($temporaryDir);
                if ($this->filesystem->isDirEmpty($this->config->get('vendor-dir').'/composer/')) {
                    $this->filesystem->removeDirectory($this->config->get('vendor-dir').'/composer/');
                }
                if ($this->filesystem->isDirEmpty($this->config->get('vendor-dir'))) {
                    $this->filesystem->removeDirectory($this->config->get('vendor-dir'));
                }
            } catch (\Exception $e) {
                // clean up
                $this->filesystem->removeDirectory($path);
                $this->filesystem->removeDirectory($temporaryDir);

                // retry downloading if we have an invalid zip file
                if ($retries && $e instanceof \UnexpectedValueException && class_exists('ZipArchive') && $e->getCode() === \ZipArchive::ER_NOZIP) {
                    $this->io->writeError('');
                    if ($this->io->isDebug()) {
                        $this->io->writeError('    Invalid zip file ('.$e->getMessage().'), retrying...');
                    } else {
                        $this->io->writeError('    Invalid zip file, retrying...');
                    }
                    usleep(500000);
                    continue;
                }

                throw $e;
            }

            break;
        }
    }
public function download(PackageInterface $package, $path, $output = true)
    {
        $temporaryDir = $this->config->get('vendor-dir').'/composer/'.substr(md5(uniqid('', true)), 0, 8);
        $retries = 3;
        while ($retries--) {
            $fileName = parent::download($package, $path, $output);

            if ($output) {
                $this->io->writeError(' Extracting archive', false, IOInterface::VERBOSE);
            }

            try {
                $this->filesystem->ensureDirectoryExists($temporaryDir);
                try {
                    $this->extract($fileName, $temporaryDir);
                } catch (\Exception $e) {
                    // remove cache if the file was corrupted
                    parent::clearLastCacheWrite($package);
                    throw $e;
                }

                $this->filesystem->unlink($fileName);

                $contentDir = $this->getFolderContent($temporaryDir);

                // only one dir in the archive, extract its contents out of it
                if (1 === count($contentDir) && is_dir(reset($contentDir))) {
                    $contentDir = $this->getFolderContent((string) reset($contentDir));
                }

                // move files back out of the temp dir
                foreach ($contentDir as $file) {
                    $file = (string) $file;
                    $this->filesystem->rename($file, $path . '/' . basename($file));
                }

                $this->filesystem->removeDirectory($temporaryDir);
                if ($this->filesystem->isDirEmpty($this->config->get('vendor-dir').'/composer/')) {
                    $this->filesystem->removeDirectory($this->config->get('vendor-dir').'/composer/');
                }
                if ($this->filesystem->isDirEmpty($this->config->get('vendor-dir'))) {
                    $this->filesystem->removeDirectory($this->config->get('vendor-dir'));
                }
            } catch (\Exception $e) {
                // clean up
                $this->filesystem->removeDirectory($path);
                $this->filesystem->removeDirectory($temporaryDir);

                // retry downloading if we have an invalid zip file
                if ($retries && $e instanceof \UnexpectedValueException && class_exists('ZipArchive') && $e->getCode() === \ZipArchive::ER_NOZIP) {
                    $this->io->writeError('');
                    if ($this->io->isDebug()) {
                        $this->io->writeError('    Invalid zip file ('.$e->getMessage().'), retrying...');
                    } else {
                        $this->io->writeError('    Invalid zip file, retrying...');
                    }
                    usleep(500000);
                    continue;
                }

                throw $e;
            }

            break;
        }
    }
{@inheritDoc}
@throws \RuntimeException
@throws \UnexpectedValueException