function SelfUpdateCommand::rollback

Throws

FilesystemException

1 call to SelfUpdateCommand::rollback()

SelfUpdateCommand::execute in vendor/composer/composer/src/Composer/Command/SelfUpdateCommand.php

File

vendor/composer/composer/src/Composer/Command/SelfUpdateCommand.php, line 416

Class

SelfUpdateCommand

@author Igor Wiedler <igor@wiedler.ch> @author Kevin Ran <kran@adobe.com> @author Jordi Boggiano <j.boggiano@seld.be>

Namespace

Composer\Command

Code

protected function rollback(OutputInterface $output, string $rollbackDir, string $localFilename) : int {
    $rollbackVersion = $this->getLastBackupVersion($rollbackDir);
    if (null === $rollbackVersion) {
        throw new \UnexpectedValueException('Composer rollback failed: no installation to roll back to in "' . $rollbackDir . '"');
    }
    $oldFile = $rollbackDir . '/' . $rollbackVersion . self::OLD_INSTALL_EXT;
    if (!is_file($oldFile)) {
        throw new FilesystemException('Composer rollback failed: "' . $oldFile . '" could not be found');
    }
    if (!Filesystem::isReadable($oldFile)) {
        throw new FilesystemException('Composer rollback failed: "' . $oldFile . '" could not be read');
    }
    $io = $this->getIO();
    $io->writeError(sprintf("Rolling back to version <info>%s</info>.", $rollbackVersion));
    if (!$this->setLocalPhar($localFilename, $oldFile)) {
        return 1;
    }
    return 0;
}