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<?php/*** CodeIgniter** An open source application development framework for PHP** This content is released under the MIT License (MIT)** Copyright (c) 2014 - 2016, British Columbia Institute of Technology** Permission is hereby granted, free of charge, to any person obtaining a copy* of this software and associated documentation files (the "Software"), to deal* in the Software without restriction, including without limitation the rights* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell* copies of the Software, and to permit persons to whom the Software is* furnished to do so, subject to the following conditions:** The above copyright notice and this permission notice shall be included in* all copies or substantial portions of the Software.** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN* THE SOFTWARE.** @package CodeIgniter* @author EllisLab Dev Team* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)* @copyright Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)* @license http://opensource.org/licenses/MIT MIT License* @link https://codeigniter.com* @since Version 1.3.0* @filesource*/defined('BASEPATH') OR exit('No direct script access allowed');/*** SQLite Database Adapter Class** Note: _DB is an extender class that the app controller* creates dynamically based on whether the query builder* class is being used or not.** @package CodeIgniter* @subpackage Drivers* @category Database* @author EllisLab Dev Team* @link https://codeigniter.com/user_guide/database/*/class CI_DB_sqlite_driver extends CI_DB {/*** Database driver** @var string*/public $dbdriver = 'sqlite';// --------------------------------------------------------------------/*** ORDER BY random keyword** @var array*/protected $_random_keyword = array('RANDOM()', 'RANDOM()');// --------------------------------------------------------------------/*** Non-persistent database connection** @param bool $persistent* @return resource*/public function db_connect($persistent = FALSE){$error = NULL;$conn_id = ($persistent === TRUE)? sqlite_popen($this->database, 0666, $error): sqlite_open($this->database, 0666, $error);isset($error) && log_message('error', $error);return $conn_id;}// --------------------------------------------------------------------/*** Database version number** @return string*/public function version(){return isset($this->data_cache['version'])? $this->data_cache['version']: $this->data_cache['version'] = sqlite_libversion();}// --------------------------------------------------------------------/*** Execute the query** @param string $sql an SQL query* @return resource*/protected function _execute($sql){return $this->is_write_type($sql)? sqlite_exec($this->conn_id, $sql): sqlite_query($this->conn_id, $sql);}// --------------------------------------------------------------------/*** Begin Transaction** @return bool*/protected function _trans_begin(){return $this->simple_query('BEGIN TRANSACTION');}// --------------------------------------------------------------------/*** Commit Transaction** @return bool*/protected function _trans_commit(){return $this->simple_query('COMMIT');}// --------------------------------------------------------------------/*** Rollback Transaction** @return bool*/protected function _trans_rollback(){return $this->simple_query('ROLLBACK');}// --------------------------------------------------------------------/*** Platform-dependant string escape** @param string* @return string*/protected function _escape_str($str){return sqlite_escape_string($str);}// --------------------------------------------------------------------/*** Affected Rows** @return int*/public function affected_rows(){return sqlite_changes($this->conn_id);}// --------------------------------------------------------------------/*** Insert ID** @return int*/public function insert_id(){return sqlite_last_insert_rowid($this->conn_id);}// --------------------------------------------------------------------/*** List table query** Generates a platform-specific query string so that the table names can be fetched** @param bool $prefix_limit* @return string*/protected function _list_tables($prefix_limit = FALSE){$sql = "SELECT name FROM sqlite_master WHERE type='table'";if ($prefix_limit !== FALSE && $this->dbprefix != ''){return $sql." AND 'name' LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);}return $sql;}// --------------------------------------------------------------------/*** Show column query** Generates a platform-specific query string so that the column names can be fetched** @param string $table* @return bool*/protected function _list_columns($table = ''){// Not supportedreturn FALSE;}// --------------------------------------------------------------------/*** Returns an object with field data** @param string $table* @return array*/public function field_data($table){if (($query = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE){return FALSE;}$query = $query->result_array();if (empty($query)){return FALSE;}$retval = array();for ($i = 0, $c = count($query); $i < $c; $i++){$retval[$i] = new stdClass();$retval[$i]->name = $query[$i]['name'];$retval[$i]->type = $query[$i]['type'];$retval[$i]->max_length = NULL;$retval[$i]->default = $query[$i]['dflt_value'];$retval[$i]->primary_key = isset($query[$i]['pk']) ? (int) $query[$i]['pk'] : 0;}return $retval;}// --------------------------------------------------------------------/*** Error** Returns an array containing code and message of the last* database error that has occured.** @return array*/public function error(){$error = array('code' => sqlite_last_error($this->conn_id));$error['message'] = sqlite_error_string($error['code']);return $error;}// --------------------------------------------------------------------/*** Replace statement** Generates a platform-specific replace string from the supplied data** @param string $table Table name* @param array $keys INSERT keys* @param array $values INSERT values* @return string*/protected function _replace($table, $keys, $values){return 'INSERT OR '.parent::_replace($table, $keys, $values);}// --------------------------------------------------------------------/*** Truncate statement** Generates a platform-specific truncate string from the supplied data** If the database does not support the TRUNCATE statement,* then this function maps to 'DELETE FROM table'** @param string $table* @return string*/protected function _truncate($table){return 'DELETE FROM '.$table;}// --------------------------------------------------------------------/*** Close DB Connection** @return void*/protected function _close(){sqlite_close($this->conn_id);}}