system/database/drivers/sqlite/sqlite_driver.php - code-igniter-v3-giggi - Gitiles

 <?php
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
  * Licensed under the Open Software License version 3.0
  *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
  * http://opensource.org/licenses/OSL-3.0
  * If you did not receive a copy of the license and are unable to obtain it
  * through the world wide web, please send an email to
  * licensing@ellislab.com so we can send you a copy immediately.
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
  * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
  * @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		http://codeigniter.com/user_guide/database/
  */
 class CI_DB_sqlite_driver extends CI_DB {

 	public $dbdriver = 'sqlite';

 	// The character used to escape with - not needed for SQLite
 	protected $_escape_char = '"';

 	protected $_random_keyword = ' Random()'; // database specific random keyword

 	/**
 	 * Non-persistent database connection
 	 *
 	 * @return	resource
 	 */
 	public function db_connect()
 	{
 		if ( ! $conn_id = @sqlite_open($this->database, FILE_WRITE_MODE, $error))
 		{
 			log_message('error', $error);

 			if ($this->db_debug)
 			{
 				$this->display_error($error, '', TRUE);
 			}

 			return FALSE;
 		}

 		return $conn_id;
 	}

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

 	/**
 	 * Persistent database connection
 	 *
 	 * @return	resource
 	 */
 	public function db_pconnect()
 	{
 		if ( ! $conn_id = @sqlite_popen($this->database, FILE_WRITE_MODE, $error))
 		{
 			log_message('error', $error);

 			if ($this->db_debug)
 			{
 				$this->display_error($error, '', TRUE);
 			}

 			return FALSE;
 		}

 		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	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
 	 *
 	 * @param	bool	$test_mode = FALSE
 	 * @return	bool
 	 */
 	public function trans_begin($test_mode = FALSE)
 	{
 		// When transactions are nested we only begin/commit/rollback the outermost ones
 		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}

 		// Reset the transaction failure flag.
 		// If the $test_mode flag is set to TRUE transactions will be rolled back
 		// even if the queries produce a successful result.
 		$this->_trans_failure = ($test_mode === TRUE);

 		$this->simple_query('BEGIN TRANSACTION');
 		return TRUE;
 	}

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

 	/**
 	 * Commit Transaction
 	 *
 	 * @return	bool
 	 */
 	public function trans_commit()
 	{
 		// When transactions are nested we only begin/commit/rollback the outermost ones
 		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}

 		$this->simple_query('COMMIT');
 		return TRUE;
 	}

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

 	/**
 	 * Rollback Transaction
 	 *
 	 * @return	bool
 	 */
 	public function trans_rollback()
 	{
 		// When transactions are nested we only begin/commit/rollback the outermost ones
 		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}

 		$this->simple_query('ROLLBACK');
 		return TRUE;
 	}

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

 	/**
 	 * Escape String
 	 *
 	 * @param	string
 	 * @param	bool	whether or not the string will be used in a LIKE condition
 	 * @return	string
 	 */
 	public function escape_str($str, $like = FALSE)
 	{
 		if (is_array($str))
 		{
 			foreach ($str as $key => $val)
 			{
 				$str[$key] = $this->escape_str($val, $like);
 			}

 			return $str;
 		}

 		$str = sqlite_escape_string($str);

 		// escape LIKE condition wildcards
 		if ($like === TRUE)
 		{
 			return str_replace(array($this->_like_escape_chr, '%', '_'),
 						array($this->_like_escape_chr.$this->_like_escape_chr, $this->_like_escape_chr.'%', $this->_like_escape_chr.'_'),
 						$str);
 		}

 		return $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
 	 * @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	the table name
 	 * @return	bool
 	 */
 	protected function _list_columns($table = '')
 	{
 		// Not supported
 		return FALSE;
 	}

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

 	/**
 	 * Field data query
 	 *
 	 * Generates a platform-specific query so that the column data can be retrieved
 	 *
 	 * @param	string	the table name
 	 * @return	string
 	 */
 	protected function _field_data($table)
 	{
 		return 'SELECT * FROM '.$this->escape_identifiers($table).' LIMIT 1';
 	}

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

 	/**
 	 * 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	the table name
 	 * @param	array	the insert keys
 	 * @param	array	the 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() command,
 	 * then this function maps to 'DELETE FROM table'
 	 *
 	 * @param	string	the table name
 	 * @return	string
 	 */
 	protected function _truncate($table)
 	{
 		return 'DELETE FROM '.$table;
 	}

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

 	/**
 	 * Close DB Connection
 	 *
 	 * @return	void
 	 */
 	protected function _close()
 	{
 		@sqlite_close($this->conn_id);
 	}

 }

 /* End of file sqlite_driver.php */
 /* Location: ./system/database/drivers/sqlite/sqlite_driver.php */
	<?php
	/**
	* CodeIgniter
	*
	* An open source application development framework for PHP 5.2.4 or newer
	*
	* NOTICE OF LICENSE
	*
	* Licensed under the Open Software License version 3.0
	*
	* This source file is subject to the Open Software License (OSL 3.0) that is
	* bundled with this package in the files license.txt / license.rst. It is
	* also available through the world wide web at this URL:
	* http://opensource.org/licenses/OSL-3.0
	* If you did not receive a copy of the license and are unable to obtain it
	* through the world wide web, please send an email to
	* licensing@ellislab.com so we can send you a copy immediately.
	*
	* @package CodeIgniter
	* @author EllisLab Dev Team
	* @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
	* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
	* @link http://codeigniter.com
	* @since Version 1.0
	* @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 http://codeigniter.com/user_guide/database/
	*/
	class CI_DB_sqlite_driver extends CI_DB {

	public $dbdriver = 'sqlite';

	// The character used to escape with - not needed for SQLite
	protected $_escape_char = '"';

	protected $_random_keyword = ' Random()'; // database specific random keyword

	/**
	* Non-persistent database connection
	*
	* @return resource
	*/
	public function db_connect()
	{
	if ( ! $conn_id = @sqlite_open($this->database, FILE_WRITE_MODE, $error))
	{
	log_message('error', $error);

	if ($this->db_debug)
	{
	$this->display_error($error, '', TRUE);
	}

	return FALSE;
	}

	return $conn_id;
	}

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

	/**
	* Persistent database connection
	*
	* @return resource
	*/
	public function db_pconnect()
	{
	if ( ! $conn_id = @sqlite_popen($this->database, FILE_WRITE_MODE, $error))
	{
	log_message('error', $error);

	if ($this->db_debug)
	{
	$this->display_error($error, '', TRUE);
	}

	return FALSE;
	}

	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 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
	*
	* @param bool $test_mode = FALSE
	* @return bool
	*/
	public function trans_begin($test_mode = FALSE)
	{
	// When transactions are nested we only begin/commit/rollback the outermost ones
	if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
	{
	return TRUE;
	}

	// Reset the transaction failure flag.
	// If the $test_mode flag is set to TRUE transactions will be rolled back
	// even if the queries produce a successful result.
	$this->_trans_failure = ($test_mode === TRUE);

	$this->simple_query('BEGIN TRANSACTION');
	return TRUE;
	}

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

	/**
	* Commit Transaction
	*
	* @return bool
	*/
	public function trans_commit()
	{
	// When transactions are nested we only begin/commit/rollback the outermost ones
	if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
	{
	return TRUE;
	}

	$this->simple_query('COMMIT');
	return TRUE;
	}

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

	/**
	* Rollback Transaction
	*
	* @return bool
	*/
	public function trans_rollback()
	{
	// When transactions are nested we only begin/commit/rollback the outermost ones
	if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
	{
	return TRUE;
	}

	$this->simple_query('ROLLBACK');
	return TRUE;
	}

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

	/**
	* Escape String
	*
	* @param string
	* @param bool whether or not the string will be used in a LIKE condition
	* @return string
	*/
	public function escape_str($str, $like = FALSE)
	{
	if (is_array($str))
	{
	foreach ($str as $key => $val)
	{
	$str[$key] = $this->escape_str($val, $like);
	}

	return $str;
	}

	$str = sqlite_escape_string($str);

	// escape LIKE condition wildcards
	if ($like === TRUE)
	{
	return str_replace(array($this->_like_escape_chr, '%', '_'),
	array($this->_like_escape_chr.$this->_like_escape_chr, $this->_like_escape_chr.'%', $this->_like_escape_chr.'_'),
	$str);
	}

	return $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
	* @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 the table name
	* @return bool
	*/
	protected function _list_columns($table = '')
	{
	// Not supported
	return FALSE;
	}

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

	/**
	* Field data query
	*
	* Generates a platform-specific query so that the column data can be retrieved
	*
	* @param string the table name
	* @return string
	*/
	protected function _field_data($table)
	{
	return 'SELECT * FROM '.$this->escape_identifiers($table).' LIMIT 1';
	}

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

	/**
	* 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 the table name
	* @param array the insert keys
	* @param array the 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() command,
	* then this function maps to 'DELETE FROM table'
	*
	* @param string the table name
	* @return string
	*/
	protected function _truncate($table)
	{
	return 'DELETE FROM '.$table;
	}

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

	/**
	* Close DB Connection
	*
	* @return void
	*/
	protected function _close()
	{
	@sqlite_close($this->conn_id);
	}

	}

	/* End of file sqlite_driver.php */
	/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */