/**
* @return bool
*/
public static function selfupgrade()
{
$upgrader = new Upgrader();
if (!Installer::isGravInstance(GRAV_ROOT)) {
return false;
}
if (is_link(GRAV_ROOT . DS . 'index.php')) {
Installer::setError(Installer::IS_LINK);
return false;
}
if (method_exists($upgrader, 'meetsRequirements') && !$upgrader->meetsRequirements()) {
$error = [];
$error[] = '<p>Grav has increased the minimum PHP requirement.<br />';
$error[] = 'You are currently running PHP <strong>' . PHP_VERSION . '</strong>';
$error[] = ', but PHP <strong>' . GRAV_PHP_MIN . '</strong> is required.</p>';
$error[] = '<p><a href="http://getgrav.org/blog/changing-php-requirements-to-5.5" class="button button-small secondary">Additional information</a></p>';
Installer::setError(implode("\n", $error));
return false;
}
$update = $upgrader->getAssets()['grav-update'];
$tmp = Admin::getTempDir() . '/Grav-' . uniqid();
$file = self::_downloadSelfupgrade($update, $tmp);
Installer::install($file, GRAV_ROOT, ['sophisticated' => true, 'overwrite' => true, 'ignore_symlinks' => true]);
$errorCode = Installer::lastErrorCode();
Folder::delete($tmp);
if ($errorCode & (Installer::ZIP_OPEN_ERROR | Installer::ZIP_EXTRACT_ERROR)) {
return false;
}
return true;
}