system/database/drivers/sqlite3/sqlite3_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 - 2013, 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');

 /**
  * 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		http://codeigniter.com/user_guide/database/
  * @since		Version 3.0
  */
 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
 	 *
 	 * @return	object	type SQLite3
 	 */
 	public function db_connect()
 	{
 		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;
 		}
 	}

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

 	/**
 	 * Persistent database connection
 	 *
 	 * @return  object	type SQLite3
 	 */
 	public function db_pconnect()
 	{
 		log_message('debug', 'SQLite3 doesn\'t support persistent connections');
 		return $this->db_connect();
 	}

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

 	/**
 	 * 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
 	 *
 	 * @param	bool	$test_mode
 	 * @return	bool
 	 */
 	public function trans_begin($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);

 		return $this->conn_id->exec('BEGIN TRANSACTION');
 	}

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

 	/**
 	 * 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;
 		}

 		return $this->conn_id->exec('END TRANSACTION');
 	}

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

 	/**
 	 * 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;
 		}

 		return $this->conn_id->exec('ROLLBACK');
 	}

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

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

 			return $str;
 		}

 		$str = $this->conn_id->escapeString(remove_invisible_characters($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 $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)
 				: '');
 	}

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

 	/**
 	 * Show column query
 	 *
 	 * Generates a platform-specific query string so that the column names can be fetched
 	 *
 	 * @param	string	$table
 	 * @return	string
 	 */
 	protected function _list_columns($table = '')
 	{
 		// Not supported
 		return FALSE;
 	}

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

 	/**
 	 * Returns an object with field data
 	 *
 	 * @param	string	$table
 	 * @return	array
 	 */
 	public function field_data($table = '')
 	{
 		if ($table === '')
 		{
 			return ($this->db_debug) ? $this->display_error('db_field_param_missing') : FALSE;
 		}

 		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()
 	{
 		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();
 	}

 }

 /* End of file sqlite3_driver.php */
 /* Location: ./system/database/drivers/sqlite3/sqlite3_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 - 2013, 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');

	/**
	* 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 http://codeigniter.com/user_guide/database/
	* @since Version 3.0
	*/
	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
	*
	* @return object type SQLite3
	*/
	public function db_connect()
	{
	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;
	}
	}

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

	/**
	* Persistent database connection
	*
	* @return object type SQLite3
	*/
	public function db_pconnect()
	{
	log_message('debug', 'SQLite3 doesn\'t support persistent connections');
	return $this->db_connect();
	}

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

	/**
	* 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
	*
	* @param bool $test_mode
	* @return bool
	*/
	public function trans_begin($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);

	return $this->conn_id->exec('BEGIN TRANSACTION');
	}

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

	/**
	* 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;
	}

	return $this->conn_id->exec('END TRANSACTION');
	}

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

	/**
	* 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;
	}

	return $this->conn_id->exec('ROLLBACK');
	}

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

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

	return $str;
	}

	$str = $this->conn_id->escapeString(remove_invisible_characters($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 $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)
	: '');
	}

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

	/**
	* Show column query
	*
	* Generates a platform-specific query string so that the column names can be fetched
	*
	* @param string $table
	* @return string
	*/
	protected function _list_columns($table = '')
	{
	// Not supported
	return FALSE;
	}

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

	/**
	* Returns an object with field data
	*
	* @param string $table
	* @return array
	*/
	public function field_data($table = '')
	{
	if ($table === '')
	{
	return ($this->db_debug) ? $this->display_error('db_field_param_missing') : FALSE;
	}

	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()
	{
	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();
	}

	}

	/* End of file sqlite3_driver.php */
	/* Location: ./system/database/drivers/sqlite3/sqlite3_driver.php */