/**
* 还原数据库
* @author Rocks
*/
public function import($time = 0, $part = null, $start = null)
{
if (is_numeric($time) && is_null($part) && is_null($start)) {
//初始化
//获取备份文件信息
$name = date('Ymd-His', $time) . '-*.sql*';
$path = realpath(C('DATA_BACKUP_PATH')) . DIRECTORY_SEPARATOR . $name;
$files = glob($path);
$list = array();
foreach ($files as $name) {
$basename = basename($name);
$match = sscanf($basename, '%4s%2s%2s-%2s%2s%2s-%d');
$gz = preg_match('/^\\d{8,8}-\\d{6,6}-\\d+\\.sql.gz$/', $basename);
$list[$match[6]] = array($match[6], $name, $gz);
}
ksort($list);
//检测文件正确性
$last = end($list);
if (count($list) === $last[0]) {
session('backup_list', $list);
//缓存备份列表
$this->success('初始化完成！', '', array('part' => 1, 'start' => 0));
} else {
$this->error('备份文件可能已经损坏，请检查！');
}
} elseif (is_numeric($part) && is_numeric($start)) {
$list = session('backup_list');
$db = new Database($list[$part], array('path' => realpath(C('DATA_BACKUP_PATH')) . DIRECTORY_SEPARATOR, 'compress' => $list[$part][2]));
$start = $db->import($start);
if (false === $start) {
$this->error('还原数据出错！');
} elseif (0 === $start) {
//下一卷
if (isset($list[++$part])) {
$data = array('part' => $part, 'start' => 0);
$this->success("正在还原...#{$part}", '', $data);
} else {
session('backup_list', null);
$this->success('还原完成！');
}
} else {
$data = array('part' => $part, 'start' => $start[0]);
if ($start[1]) {
$rate = floor(100 * ($start[0] / $start[1]));
$this->success("正在还原...#{$part} ({$rate}%)", '', $data);
} else {
$data['gz'] = 1;
$this->success("正在还原...#{$part}", '', $data);
}
}
} else {
$this->error('参数错误！');
}
}
