public function selfUpdate($phar)
{
if (!defined('COMACO_FILE')) {
throw new \RuntimeException('Own filename is not provided, do you run update from phar?');
}
$filesystem = new Filesystem(new LocalAdapter(getcwd()));
$file = $filesystem->getFile(COMACO_FILE);
if (!$file->exists()) {
throw new \RuntimeException('Could not find own file in filesystem, are you running phar from current working directory?');
}
if (!$file->isWritable()) {
throw new \RuntimeException(COMACO_FILE . ' is not writeable!');
}
$tempDir = sys_get_temp_dir();
$tempFilesystem = new Filesystem(new LocalAdapter($tempDir));
$root = $tempFilesystem->getRoot();
if (!$root->isWritable()) {
throw new \RuntimeException('Temporary directory is not writeable!');
}
$tempFileIndex = 0;
do {
$tempFile = $tempFilesystem->getFile('/comaco' . ($tempFileIndex > 0 ? '_' . $tempFileIndex : '') . '.phar');
$tempFileIndex++;
} while ($tempFile->exists());
$phar = base64_decode($phar);
$tempFile->setContents($phar);
// test the archive
$realPath = $tempDir . '/' . $tempFile->getBasename();
new \Phar($realPath);
$tempFile->moveTo($file, File::OPERATION_REPLACE);
return $file->getMD5();
}
