vendor/topthink/think-orm/src/db/connector/Sqlite.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

namespace think\db\connector;

use PDO;
use think\db\PDOConnection;

/**
 * Sqlite数据库驱动
 */
class Sqlite extends PDOConnection
{

    /**
     * 解析pdo连接的dsn信息
     * @access protected
     * @param  array $config 连接信息
     * @return string
     */
    protected function parseDsn(array $config): string
    {
        $dsn = 'sqlite:' . $config['database'];

        return $dsn;
    }

    /**
     * 取得数据表的字段信息
     * @access public
     * @param  string $tableName
     * @return array
     */
    public function getFields(string $tableName): array
    {
        [$tableName] = explode(' ', $tableName);
        $sql         = 'PRAGMA table_info( ' . $tableName . ' )';

        $pdo    = $this->getPDOStatement($sql);
        $result = $pdo->fetchAll(PDO::FETCH_ASSOC);
        $info   = [];

        if (!empty($result)) {
            foreach ($result as $key => $val) {
                $val = array_change_key_case($val);

                $info[$val['name']] = [
                    'name'    => $val['name'],
                    'type'    => $val['type'],
                    'notnull' => 1 === $val['notnull'],
                    'default' => $val['dflt_value'],
                    'primary' => '1' == $val['pk'],