system/database/drivers/sqlite3/sqlite3_driver.php - code-igniter-v3-giggi - Gitiles

 <?php
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP
  *
  * This content is released under the MIT License (MIT)
  *
  * Copyright (c) 2014 - 2017, 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 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
  * @license	http://opensource.org/licenses/MIT	MIT License
  * @link	https://codeigniter.com
  * @since	Version 3.0.0
  * @filesource
  */
 defined('BASEPATH') OR exit('No direct script access allowed');

 /**
  * SQLite3 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		Andrey Andreev
  * @link		https://codeigniter.com/user_guide/database/
  */
 class CI_DB_sqlite3_driver extends CI_DB {

 	/**
 	 * Database driver
 	 *
 	 * @var	string
 	 */
 	public $dbdriver = 'sqlite3';

 	// --------------------------------------------------------------------

 	/**
 	 * ORDER BY random keyword
 	 *
 	 * @var	array
 	 */
 	protected $_random_keyword = array('RANDOM()', 'RANDOM()');

 	// --------------------------------------------------------------------

 	/**
 	 * Non-persistent database connection
 	 *
 	 * @param	bool	$persistent
 	 * @return	SQLite3
 	 */
 	public function db_connect($persistent = FALSE)
 	{
 		if ($persistent)
 		{
 			log_message('debug', 'SQLite3 doesn\'t support persistent connections');
 		}

 		try
 		{
 			return ( ! $this->password)
 				? new SQLite3($this->database)
 				: new SQLite3($this->database, SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE, $this->password);
 		}
 		catch (Exception $e)
 		{
 			return FALSE;
 		}
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Database version number
 	 *
 	 * @return	string
 	 */
 	public function version()
 	{
 		if (isset($this->data_cache['version']))
 		{
 			return $this->data_cache['version'];
 		}

 		$version = SQLite3::version();
 		return $this->data_cache['version'] = $version['versionString'];
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Execute the query
 	 *
 	 * @todo	Implement use of SQLite3::querySingle(), if needed
 	 * @param	string	$sql
 	 * @return	mixed	SQLite3Result object or bool
 	 */
 	protected function _execute($sql)
 	{
 		return $this->is_write_type($sql)
 			? $this->conn_id->exec($sql)
 			: $this->conn_id->query($sql);
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Begin Transaction
 	 *
 	 * @return	bool
 	 */
 	protected function _trans_begin()
 	{
 		return $this->conn_id->exec('BEGIN TRANSACTION');
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Commit Transaction
 	 *
 	 * @return	bool
 	 */
 	protected function _trans_commit()
 	{
 		return $this->conn_id->exec('END TRANSACTION');
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Rollback Transaction
 	 *
 	 * @return	bool
 	 */
 	protected function _trans_rollback()
 	{
 		return $this->conn_id->exec('ROLLBACK');
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Platform-dependent string escape
 	 *
 	 * @param	string
 	 * @return	string
 	 */
 	protected function _escape_str($str)
 	{
 		return $this->conn_id->escapeString($str);
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Affected Rows
 	 *
 	 * @return	int
 	 */
 	public function affected_rows()
 	{
 		return $this->conn_id->changes();
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Insert ID
 	 *
 	 * @return	int
 	 */
 	public function insert_id()
 	{
 		return $this->conn_id->lastInsertRowID();
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Show 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)
 	{
 		return 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\''
 			.(($prefix_limit !== FALSE && $this->dbprefix != '')
 				? ' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix).'%\' '.sprintf($this->_like_escape_str, $this->_like_escape_chr)
 				: '');
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Fetch Field Names
 	 *
 	 * @param	string	$table	Table name
 	 * @return	array
 	 */
 	public function list_fields($table)
 	{
 		// Is there a cached result?
 		if (isset($this->data_cache['field_names'][$table]))
 		{
 			return $this->data_cache['field_names'][$table];
 		}

 		if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
 		{
 			return FALSE;
 		}

 		$this->data_cache['field_names'][$table] = array();
 		foreach ($result->result_array() as $row)
 		{
 			$this->data_cache['field_names'][$table][] = $row['name'];
 		}

 		return $this->data_cache['field_names'][$table];
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * 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 occurred.
 	 *
 	 * @return	array
 	 */
 	public function error()
 	{
 		return array('code' => $this->conn_id->lastErrorCode(), 'message' => $this->conn_id->lastErrorMsg());
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * 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 method 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()
 	{
 		$this->conn_id->close();
 	}

 }
	<?php
	/**
	* CodeIgniter
	*
	* An open source application development framework for PHP
	*
	* This content is released under the MIT License (MIT)
	*
	* Copyright (c) 2014 - 2017, 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 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
	* @license http://opensource.org/licenses/MIT MIT License
	* @link https://codeigniter.com
	* @since Version 3.0.0
	* @filesource
	*/
	defined('BASEPATH') OR exit('No direct script access allowed');

	/**
	* SQLite3 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 Andrey Andreev
	* @link https://codeigniter.com/user_guide/database/
	*/
	class CI_DB_sqlite3_driver extends CI_DB {

	/**
	* Database driver
	*
	* @var string
	*/
	public $dbdriver = 'sqlite3';

	// --------------------------------------------------------------------

	/**
	* ORDER BY random keyword
	*
	* @var array
	*/
	protected $_random_keyword = array('RANDOM()', 'RANDOM()');

	// --------------------------------------------------------------------

	/**
	* Non-persistent database connection
	*
	* @param bool $persistent
	* @return SQLite3
	*/
	public function db_connect($persistent = FALSE)
	{
	if ($persistent)
	{
	log_message('debug', 'SQLite3 doesn\'t support persistent connections');
	}

	try
	{
	return ( ! $this->password)
	? new SQLite3($this->database)
	: new SQLite3($this->database, SQLITE3_OPEN_READWRITE \| SQLITE3_OPEN_CREATE, $this->password);
	}
	catch (Exception $e)
	{
	return FALSE;
	}
	}

	// --------------------------------------------------------------------

	/**
	* Database version number
	*
	* @return string
	*/
	public function version()
	{
	if (isset($this->data_cache['version']))
	{
	return $this->data_cache['version'];
	}

	$version = SQLite3::version();
	return $this->data_cache['version'] = $version['versionString'];
	}

	// --------------------------------------------------------------------

	/**
	* Execute the query
	*
	* @todo Implement use of SQLite3::querySingle(), if needed
	* @param string $sql
	* @return mixed SQLite3Result object or bool
	*/
	protected function _execute($sql)
	{
	return $this->is_write_type($sql)
	? $this->conn_id->exec($sql)
	: $this->conn_id->query($sql);
	}

	// --------------------------------------------------------------------

	/**
	* Begin Transaction
	*
	* @return bool
	*/
	protected function _trans_begin()
	{
	return $this->conn_id->exec('BEGIN TRANSACTION');
	}

	// --------------------------------------------------------------------

	/**
	* Commit Transaction
	*
	* @return bool
	*/
	protected function _trans_commit()
	{
	return $this->conn_id->exec('END TRANSACTION');
	}

	// --------------------------------------------------------------------

	/**
	* Rollback Transaction
	*
	* @return bool
	*/
	protected function _trans_rollback()
	{
	return $this->conn_id->exec('ROLLBACK');
	}

	// --------------------------------------------------------------------

	/**
	* Platform-dependent string escape
	*
	* @param string
	* @return string
	*/
	protected function _escape_str($str)
	{
	return $this->conn_id->escapeString($str);
	}

	// --------------------------------------------------------------------

	/**
	* Affected Rows
	*
	* @return int
	*/
	public function affected_rows()
	{
	return $this->conn_id->changes();
	}

	// --------------------------------------------------------------------

	/**
	* Insert ID
	*
	* @return int
	*/
	public function insert_id()
	{
	return $this->conn_id->lastInsertRowID();
	}

	// --------------------------------------------------------------------

	/**
	* Show 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)
	{
	return 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\''
	.(($prefix_limit !== FALSE && $this->dbprefix != '')
	? ' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix).'%\' '.sprintf($this->_like_escape_str, $this->_like_escape_chr)
	: '');
	}

	// --------------------------------------------------------------------

	/**
	* Fetch Field Names
	*
	* @param string $table Table name
	* @return array
	*/
	public function list_fields($table)
	{
	// Is there a cached result?
	if (isset($this->data_cache['field_names'][$table]))
	{
	return $this->data_cache['field_names'][$table];
	}

	if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
	{
	return FALSE;
	}

	$this->data_cache['field_names'][$table] = array();
	foreach ($result->result_array() as $row)
	{
	$this->data_cache['field_names'][$table][] = $row['name'];
	}

	return $this->data_cache['field_names'][$table];
	}

	// --------------------------------------------------------------------

	/**
	* 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 occurred.
	*
	* @return array
	*/
	public function error()
	{
	return array('code' => $this->conn_id->lastErrorCode(), 'message' => $this->conn_id->lastErrorMsg());
	}

	// --------------------------------------------------------------------

	/**
	* 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 method 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()
	{
	$this->conn_id->close();
	}

	}