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alazhar
2020-01-02 23:07:40 +07:00
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10
system/database/drivers/sqlite/index.html Normal file
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<html>
<head>
<title>403 Forbidden</title>
</head>
<body>
<p>Directory access is forbidden.</p>
</body>
</html>

658
system/database/drivers/sqlite/sqlite_driver.php Normal file
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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* SQLite Database Adapter Class
*
* Note: _DB is an extender class that the app controller
* creates dynamically based on whether the active record
* class is being used or not.
*
* @package CodeIgniter
* @subpackage Drivers
* @category Database
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_sqlite_driver extends CI_DB {
var $dbdriver = 'sqlite';
// The character used to escape with - not needed for SQLite
var $_escape_char = '';
// clause and character used for LIKE escape sequences
var $_like_escape_str = " ESCAPE '%s' ";
var $_like_escape_chr = '!';
/**
* The syntax to count rows is slightly different across different
* database engines, so this string appears in each driver and is
* used for the count_all() and count_all_results() functions.
*/
var $_count_string = "SELECT COUNT(*) AS ";
var $_random_keyword = ' Random()'; // database specific random keyword
/**
* Non-persistent database connection
*
* @access private called by the base class
* @return resource
*/
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
*
* @access private called by the base class
* @return resource
*/
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 $conn_id;
}
// --------------------------------------------------------------------
/**
* Reconnect
*
* Keep / reestablish the db connection if no queries have been
* sent for a length of time exceeding the server's idle timeout
*
* @access public
* @return void
*/
function reconnect()
{
// not implemented in SQLite
}
// --------------------------------------------------------------------
/**
* Select the database
*
* @access private called by the base class
* @return resource
*/
function db_select()
{
return TRUE;
}
// --------------------------------------------------------------------
/**
* Set client character set
*
* @access public
* @param string
* @param string
* @return resource
*/
function db_set_charset($charset, $collation)
{
// @todo - add support if needed
return TRUE;
}
// --------------------------------------------------------------------
/**
* Version number query string
*
* @access public
* @return string
*/
function _version()
{
return sqlite_libversion();
}
// --------------------------------------------------------------------
/**
* Execute the query
*
* @access private called by the base class
* @param string an SQL query
* @return resource
*/
function _execute($sql)
{
$sql = $this->_prep_query($sql);
return @sqlite_query($this->conn_id, $sql);
}
// --------------------------------------------------------------------
/**
* Prep the query
*
* If needed, each database adapter can prep the query string
*
* @access private called by execute()
* @param string an SQL query
* @return string
*/
function _prep_query($sql)
{
return $sql;
}
// --------------------------------------------------------------------
/**
* Begin Transaction
*
* @access public
* @return bool
*/
function trans_begin($test_mode = FALSE)
{
if ( ! $this->trans_enabled)
{
return TRUE;
}
// When transactions are nested we only begin/commit/rollback the outermost ones
if ($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) ? TRUE : FALSE;
$this->simple_query('BEGIN TRANSACTION');
return TRUE;
}
// --------------------------------------------------------------------
/**
* Commit Transaction
*
* @access public
* @return bool
*/
function trans_commit()
{
if ( ! $this->trans_enabled)
{
return TRUE;
}
// When transactions are nested we only begin/commit/rollback the outermost ones
if ($this->_trans_depth > 0)
{
return TRUE;
}
$this->simple_query('COMMIT');
return TRUE;
}
// --------------------------------------------------------------------
/**
* Rollback Transaction
*
* @access public
* @return bool
*/
function trans_rollback()
{
if ( ! $this->trans_enabled)
{
return TRUE;
}
// When transactions are nested we only begin/commit/rollback the outermost ones
if ($this->_trans_depth > 0)
{
return TRUE;
}
$this->simple_query('ROLLBACK');
return TRUE;
}
// --------------------------------------------------------------------
/**
* Escape String
*
* @access public
* @param string
* @param bool whether or not the string will be used in a LIKE condition
* @return string
*/
function escape_str($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)
{
$str = 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 $str;
}
// --------------------------------------------------------------------
/**
* Affected Rows
*
* @access public
* @return integer
*/
function affected_rows()
{
return sqlite_changes($this->conn_id);
}
// --------------------------------------------------------------------
/**
* Insert ID
*
* @access public
* @return integer
*/
function insert_id()
{
return @sqlite_last_insert_rowid($this->conn_id);
}
// --------------------------------------------------------------------
/**
* "Count All" query
*
* Generates a platform-specific query string that counts all records in
* the specified database
*
* @access public
* @param string
* @return string
*/
function count_all($table = '')
{
if ($table == '')
{
return 0;
}
$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
if ($query->num_rows() == 0)
{
return 0;
}
$row = $query->row();
$this->_reset_select();
return (int) $row->numrows;
}
// --------------------------------------------------------------------
/**
* List table query
*
* Generates a platform-specific query string so that the table names can be fetched
*
* @access private
* @param boolean
* @return string
*/
function _list_tables($prefix_limit = FALSE)
{
$sql = "SELECT name from sqlite_master WHERE type='table'";
if ($prefix_limit !== FALSE AND $this->dbprefix != '')
{
$sql .= " AND 'name' LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
}
return $sql;
}
// --------------------------------------------------------------------
/**
* Show column query
*
* Generates a platform-specific query string so that the column names can be fetched
*
* @access public
* @param string the table name
* @return string
*/
function _list_columns($table = '')
{
// Not supported
return FALSE;
}
// --------------------------------------------------------------------
/**
* Field data query
*
* Generates a platform-specific query so that the column data can be retrieved
*
* @access public
* @param string the table name
* @return object
*/
function _field_data($table)
{
return "SELECT * FROM ".$table." LIMIT 1";
}
// --------------------------------------------------------------------
/**
* The error message string
*
* @access private
* @return string
*/
function _error_message()
{
return sqlite_error_string(sqlite_last_error($this->conn_id));
}
// --------------------------------------------------------------------
/**
* The error message number
*
* @access private
* @return integer
*/
function _error_number()
{
return sqlite_last_error($this->conn_id);
}
// --------------------------------------------------------------------
/**
* Escape the SQL Identifiers
*
* This function escapes column and table names
*
* @access private
* @param string
* @return string
*/
function _escape_identifiers($item)
{
if ($this->_escape_char == '')
{
return $item;
}
foreach ($this->_reserved_identifiers as $id)
{
if (strpos($item, '.'.$id) !== FALSE)
{
$str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);
// remove duplicates if the user already included the escape
return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
}
}
if (strpos($item, '.') !== FALSE)
{
$str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;
}
else
{
$str = $this->_escape_char.$item.$this->_escape_char;
}
// remove duplicates if the user already included the escape
return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
}
// --------------------------------------------------------------------
/**
* From Tables
*
* This function implicitly groups FROM tables so there is no confusion
* about operator precedence in harmony with SQL standards
*
* @access public
* @param type
* @return type
*/
function _from_tables($tables)
{
if ( ! is_array($tables))
{
$tables = array($tables);
}
return '('.implode(', ', $tables).')';
}
// --------------------------------------------------------------------
/**
* Insert statement
*
* Generates a platform-specific insert string from the supplied data
*
* @access public
* @param string the table name
* @param array the insert keys
* @param array the insert values
* @return string
*/
function _insert($table, $keys, $values)
{
return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
}
// --------------------------------------------------------------------
/**
* Update statement
*
* Generates a platform-specific update string from the supplied data
*
* @access public
* @param string the table name
* @param array the update data
* @param array the where clause
* @param array the orderby clause
* @param array the limit clause
* @return string
*/
function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
{
foreach ($values as $key => $val)
{
$valstr[] = $key." = ".$val;
}
$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
$sql = "UPDATE ".$table." SET ".implode(', ', $valstr);
$sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';
$sql .= $orderby.$limit;
return $sql;
}
// --------------------------------------------------------------------
/**
* Truncate statement
*
* Generates a platform-specific truncate string from the supplied data
* If the database does not support the truncate() command
* This function maps to "DELETE FROM table"
*
* @access public
* @param string the table name
* @return string
*/
function _truncate($table)
{
return $this->_delete($table);
}
// --------------------------------------------------------------------
/**
* Delete statement
*
* Generates a platform-specific delete string from the supplied data
*
* @access public
* @param string the table name
* @param array the where clause
* @param string the limit clause
* @return string
*/
function _delete($table, $where = array(), $like = array(), $limit = FALSE)
{
$conditions = '';
if (count($where) > 0 OR count($like) > 0)
{
$conditions = "\nWHERE ";
$conditions .= implode("\n", $this->ar_where);
if (count($where) > 0 && count($like) > 0)
{
$conditions .= " AND ";
}
$conditions .= implode("\n", $like);
}
$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
return "DELETE FROM ".$table.$conditions.$limit;
}
// --------------------------------------------------------------------
/**
* Limit string
*
* Generates a platform-specific LIMIT clause
*
* @access public
* @param string the sql query string
* @param integer the number of rows to limit the query to
* @param integer the offset value
* @return string
*/
function _limit($sql, $limit, $offset)
{
if ($offset == 0)
{
$offset = '';
}
else
{
$offset .= ", ";
}
return $sql."LIMIT ".$offset.$limit;
}
// --------------------------------------------------------------------
/**
* Close DB Connection
*
* @access public
* @param resource
* @return void
*/
function _close($conn_id)
{
@sqlite_close($conn_id);
}
}
/* End of file sqlite_driver.php */
/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */

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system/database/drivers/sqlite/sqlite_forge.php Normal file
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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* SQLite Forge Class
*
* @category Database
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_sqlite_forge extends CI_DB_forge {
/**
* Create database
*
* @access public
* @param string the database name
* @return bool
*/
function _create_database()
{
// In SQLite, a database is created when you connect to the database.
// We'll return TRUE so that an error isn't generated
return TRUE;
}
// --------------------------------------------------------------------
/**
* Drop database
*
* @access private
* @param string the database name
* @return bool
*/
function _drop_database($name)
{
if ( ! @file_exists($this->db->database) OR ! @unlink($this->db->database))
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_unable_to_drop');
}
return FALSE;
}
return TRUE;
}
// --------------------------------------------------------------------
/**
* Create Table
*
* @access private
* @param string the table name
* @param array the fields
* @param mixed primary key(s)
* @param mixed key(s)
* @param boolean should 'IF NOT EXISTS' be added to the SQL
* @return bool
*/
function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
{
$sql = 'CREATE TABLE ';
// IF NOT EXISTS added to SQLite in 3.3.0
if ($if_not_exists === TRUE && version_compare($this->db->_version(), '3.3.0', '>=') === TRUE)
{
$sql .= 'IF NOT EXISTS ';
}
$sql .= $this->db->_escape_identifiers($table)."(";
$current_field_count = 0;
foreach ($fields as $field=>$attributes)
{
// Numeric field names aren't allowed in databases, so if the key is
// numeric, we know it was assigned by PHP and the developer manually
// entered the field information, so we'll simply add it to the list
if (is_numeric($field))
{
$sql .= "\n\t$attributes";
}
else
{
$attributes = array_change_key_case($attributes, CASE_UPPER);
$sql .= "\n\t".$this->db->_protect_identifiers($field);
$sql .= ' '.$attributes['TYPE'];
if (array_key_exists('CONSTRAINT', $attributes))
{
$sql .= '('.$attributes['CONSTRAINT'].')';
}
if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
{
$sql .= ' UNSIGNED';
}
if (array_key_exists('DEFAULT', $attributes))
{
$sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
}
if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
{
$sql .= ' NULL';
}
else
{
$sql .= ' NOT NULL';
}
if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
{
$sql .= ' AUTO_INCREMENT';
}
}
// don't add a comma on the end of the last field
if (++$current_field_count < count($fields))
{
$sql .= ',';
}
}
if (count($primary_keys) > 0)
{
$primary_keys = $this->db->_protect_identifiers($primary_keys);
$sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";
}
if (is_array($keys) && count($keys) > 0)
{
foreach ($keys as $key)
{
if (is_array($key))
{
$key = $this->db->_protect_identifiers($key);
}
else
{
$key = array($this->db->_protect_identifiers($key));
}
$sql .= ",\n\tUNIQUE (" . implode(', ', $key) . ")";
}
}
$sql .= "\n)";
return $sql;
}
// --------------------------------------------------------------------
/**
* Drop Table
*
* Unsupported feature in SQLite
*
* @access private
* @return bool
*/
function _drop_table($table)
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsuported_feature');
}
return array();
}
// --------------------------------------------------------------------
/**
* Alter table query
*
* Generates a platform-specific query so that a table can be altered
* Called by add_column(), drop_column(), and column_alter(),
*
* @access private
* @param string the ALTER type (ADD, DROP, CHANGE)
* @param string the column name
* @param string the table name
* @param string the column definition
* @param string the default value
* @param boolean should 'NOT NULL' be added
* @param string the field after which we should add the new field
* @return object
*/
function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
{
$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name);
// DROP has everything it needs now.
if ($alter_type == 'DROP')
{
// SQLite does not support dropping columns
// http://www.sqlite.org/omitted.html
// http://www.sqlite.org/faq.html#q11
return FALSE;
}
$sql .= " $column_definition";
if ($default_value != '')
{
$sql .= " DEFAULT \"$default_value\"";
}
if ($null === NULL)
{
$sql .= ' NULL';
}
else
{
$sql .= ' NOT NULL';
}
if ($after_field != '')
{
$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
}
return $sql;
}
// --------------------------------------------------------------------
/**
* Rename a table
*
* Generates a platform-specific query so that a table can be renamed
*
* @access private
* @param string the old table name
* @param string the new table name
* @return string
*/
function _rename_table($table_name, $new_table_name)
{
$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name);
return $sql;
}
}
/* End of file sqlite_forge.php */
/* Location: ./system/database/drivers/sqlite/sqlite_forge.php */

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system/database/drivers/sqlite/sqlite_result.php Normal file
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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* SQLite Result Class
*
* This class extends the parent result class: CI_DB_result
*
* @category Database
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_sqlite_result extends CI_DB_result {
/**
* Number of rows in the result set
*
* @access public
* @return integer
*/
function num_rows()
{
return @sqlite_num_rows($this->result_id);
}
// --------------------------------------------------------------------
/**
* Number of fields in the result set
*
* @access public
* @return integer
*/
function num_fields()
{
return @sqlite_num_fields($this->result_id);
}
// --------------------------------------------------------------------
/**
* Fetch Field Names
*
* Generates an array of column names
*
* @access public
* @return array
*/
function list_fields()
{
$field_names = array();
for ($i = 0; $i < $this->num_fields(); $i++)
{
$field_names[] = sqlite_field_name($this->result_id, $i);
}
return $field_names;
}
// --------------------------------------------------------------------
/**
* Field data
*
* Generates an array of objects containing field meta-data
*
* @access public
* @return array
*/
function field_data()
{
$retval = array();
for ($i = 0; $i < $this->num_fields(); $i++)
{
$F = new stdClass();
$F->name = sqlite_field_name($this->result_id, $i);
$F->type = 'varchar';
$F->max_length = 0;
$F->primary_key = 0;
$F->default = '';
$retval[] = $F;
}
return $retval;
}
// --------------------------------------------------------------------
/**
* Free the result
*
* @return null
*/
function free_result()
{
// Not implemented in SQLite
}
// --------------------------------------------------------------------
/**
* Data Seek
*
* Moves the internal pointer to the desired offset. We call
* this internally before fetching results to make sure the
* result set starts at zero
*
* @access private
* @return array
*/
function _data_seek($n = 0)
{
return sqlite_seek($this->result_id, $n);
}
// --------------------------------------------------------------------
/**
* Result - associative array
*
* Returns the result set as an array
*
* @access private
* @return array
*/
function _fetch_assoc()
{
return sqlite_fetch_array($this->result_id);
}
// --------------------------------------------------------------------
/**
* Result - object
*
* Returns the result set as an object
*
* @access private
* @return object
*/
function _fetch_object()
{
if (function_exists('sqlite_fetch_object'))
{
return sqlite_fetch_object($this->result_id);
}
else
{
$arr = sqlite_fetch_array($this->result_id, SQLITE_ASSOC);
if (is_array($arr))
{
$obj = (object) $arr;
return $obj;
} else {
return NULL;
}
}
}
}
/* End of file sqlite_result.php */
/* Location: ./system/database/drivers/sqlite/sqlite_result.php */

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system/database/drivers/sqlite/sqlite_utility.php Normal file
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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* SQLite Utility Class
*
* @category Database
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_sqlite_utility extends CI_DB_utility {
/**
* List databases
*
* I don't believe you can do a database listing with SQLite
* since each database is its own file. I suppose we could
* try reading a directory looking for SQLite files, but
* that doesn't seem like a terribly good idea
*
* @access private
* @return bool
*/
function _list_databases()
{
if ($this->db_debug)
{
return $this->db->display_error('db_unsuported_feature');
}
return array();
}
// --------------------------------------------------------------------
/**
* Optimize table query
*
* Is optimization even supported in SQLite?
*
* @access private
* @param string the table name
* @return object
*/
function _optimize_table($table)
{
return FALSE;
}
// --------------------------------------------------------------------
/**
* Repair table query
*
* Are table repairs even supported in SQLite?
*
* @access private
* @param string the table name
* @return object
*/
function _repair_table($table)
{
return FALSE;
}
// --------------------------------------------------------------------
/**
* SQLite Export
*
* @access private
* @param array Preferences
* @return mixed
*/
function _backup($params = array())
{
// Currently unsupported
return $this->db->display_error('db_unsuported_feature');
}
}
/* End of file sqlite_utility.php */
/* Location: ./system/database/drivers/sqlite/sqlite_utility.php */