414 lines
9.6 KiB
PHP
414 lines
9.6 KiB
PHP
|
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
|
||
|
/**
|
||
|
* Code Igniter
|
||
|
*
|
||
|
* 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
|
||
|
*/
|
||
|
|
||
|
// ------------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Database Utility Class
|
||
|
*
|
||
|
* @category Database
|
||
|
* @author ExpressionEngine Dev Team
|
||
|
* @link http://codeigniter.com/user_guide/database/
|
||
|
*/
|
||
|
class CI_DB_utility extends CI_DB_forge {
|
||
|
|
||
|
var $db;
|
||
|
var $data_cache = array();
|
||
|
|
||
|
/**
|
||
|
* Constructor
|
||
|
*
|
||
|
* Grabs the CI super object instance so we can access it.
|
||
|
*
|
||
|
*/
|
||
|
function CI_DB_utility()
|
||
|
{
|
||
|
// Assign the main database object to $this->db
|
||
|
$CI =& get_instance();
|
||
|
$this->db =& $CI->db;
|
||
|
|
||
|
log_message('debug', "Database Utility Class Initialized");
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* List databases
|
||
|
*
|
||
|
* @access public
|
||
|
* @return bool
|
||
|
*/
|
||
|
function list_databases()
|
||
|
{
|
||
|
// Is there a cached result?
|
||
|
if (isset($this->data_cache['db_names']))
|
||
|
{
|
||
|
return $this->data_cache['db_names'];
|
||
|
}
|
||
|
|
||
|
$query = $this->db->query($this->_list_databases());
|
||
|
$dbs = array();
|
||
|
if ($query->num_rows() > 0)
|
||
|
{
|
||
|
foreach ($query->result_array() as $row)
|
||
|
{
|
||
|
$dbs[] = current($row);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$this->data_cache['db_names'] = $dbs;
|
||
|
return $this->data_cache['db_names'];
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Determine if a particular database exists
|
||
|
*
|
||
|
* @access public
|
||
|
* @param string
|
||
|
* @return boolean
|
||
|
*/
|
||
|
function database_exists($database_name)
|
||
|
{
|
||
|
// Some databases won't have access to the list_databases() function, so
|
||
|
// this is intended to allow them to override with their own functions as
|
||
|
// defined in $driver_utility.php
|
||
|
if (method_exists($this, '_database_exists'))
|
||
|
{
|
||
|
return $this->_database_exists($database_name);
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
return ( ! in_array($database_name, $this->list_databases())) ? FALSE : TRUE;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Optimize Table
|
||
|
*
|
||
|
* @access public
|
||
|
* @param string the table name
|
||
|
* @return bool
|
||
|
*/
|
||
|
function optimize_table($table_name)
|
||
|
{
|
||
|
$sql = $this->_optimize_table($table_name);
|
||
|
|
||
|
if (is_bool($sql))
|
||
|
{
|
||
|
show_error('db_must_use_set');
|
||
|
}
|
||
|
|
||
|
$query = $this->db->query($sql);
|
||
|
$res = $query->result_array();
|
||
|
|
||
|
// Note: Due to a bug in current() that affects some versions
|
||
|
// of PHP we can not pass function call directly into it
|
||
|
return current($res);
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Optimize Database
|
||
|
*
|
||
|
* @access public
|
||
|
* @return array
|
||
|
*/
|
||
|
function optimize_database()
|
||
|
{
|
||
|
$result = array();
|
||
|
foreach ($this->db->list_tables() as $table_name)
|
||
|
{
|
||
|
$sql = $this->_optimize_table($table_name);
|
||
|
|
||
|
if (is_bool($sql))
|
||
|
{
|
||
|
return $sql;
|
||
|
}
|
||
|
|
||
|
$query = $this->db->query($sql);
|
||
|
|
||
|
// Build the result array...
|
||
|
// Note: Due to a bug in current() that affects some versions
|
||
|
// of PHP we can not pass function call directly into it
|
||
|
$res = $query->result_array();
|
||
|
$res = current($res);
|
||
|
$key = str_replace($this->db->database.'.', '', current($res));
|
||
|
$keys = array_keys($res);
|
||
|
unset($res[$keys[0]]);
|
||
|
|
||
|
$result[$key] = $res;
|
||
|
}
|
||
|
|
||
|
return $result;
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Repair Table
|
||
|
*
|
||
|
* @access public
|
||
|
* @param string the table name
|
||
|
* @return bool
|
||
|
*/
|
||
|
function repair_table($table_name)
|
||
|
{
|
||
|
$sql = $this->_repair_table($table_name);
|
||
|
|
||
|
if (is_bool($sql))
|
||
|
{
|
||
|
return $sql;
|
||
|
}
|
||
|
|
||
|
$query = $this->db->query($sql);
|
||
|
|
||
|
// Note: Due to a bug in current() that affects some versions
|
||
|
// of PHP we can not pass function call directly into it
|
||
|
$res = $query->result_array();
|
||
|
return current($res);
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Generate CSV from a query result object
|
||
|
*
|
||
|
* @access public
|
||
|
* @param object The query result object
|
||
|
* @param string The delimiter - comma by default
|
||
|
* @param string The newline character - \n by default
|
||
|
* @param string The enclosure - double quote by default
|
||
|
* @return string
|
||
|
*/
|
||
|
function csv_from_result($query, $delim = ",", $newline = "\n", $enclosure = '"')
|
||
|
{
|
||
|
if ( ! is_object($query) OR ! method_exists($query, 'list_fields'))
|
||
|
{
|
||
|
show_error('You must submit a valid result object');
|
||
|
}
|
||
|
|
||
|
$out = '';
|
||
|
|
||
|
// First generate the headings from the table column names
|
||
|
foreach ($query->list_fields() as $name)
|
||
|
{
|
||
|
$out .= $enclosure.str_replace($enclosure, $enclosure.$enclosure, $name).$enclosure.$delim;
|
||
|
}
|
||
|
|
||
|
$out = rtrim($out);
|
||
|
$out .= $newline;
|
||
|
|
||
|
// Next blast through the result array and build out the rows
|
||
|
foreach ($query->result_array() as $row)
|
||
|
{
|
||
|
foreach ($row as $item)
|
||
|
{
|
||
|
$out .= $enclosure.str_replace($enclosure, $enclosure.$enclosure, $item).$enclosure.$delim;
|
||
|
}
|
||
|
$out = rtrim($out);
|
||
|
$out .= $newline;
|
||
|
}
|
||
|
|
||
|
return $out;
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Generate XML data from a query result object
|
||
|
*
|
||
|
* @access public
|
||
|
* @param object The query result object
|
||
|
* @param array Any preferences
|
||
|
* @return string
|
||
|
*/
|
||
|
function xml_from_result($query, $params = array())
|
||
|
{
|
||
|
if ( ! is_object($query) OR ! method_exists($query, 'list_fields'))
|
||
|
{
|
||
|
show_error('You must submit a valid result object');
|
||
|
}
|
||
|
|
||
|
// Set our default values
|
||
|
foreach (array('root' => 'root', 'element' => 'element', 'newline' => "\n", 'tab' => "\t") as $key => $val)
|
||
|
{
|
||
|
if ( ! isset($params[$key]))
|
||
|
{
|
||
|
$params[$key] = $val;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Create variables for convenience
|
||
|
extract($params);
|
||
|
|
||
|
// Load the xml helper
|
||
|
$CI =& get_instance();
|
||
|
$CI->load->helper('xml');
|
||
|
|
||
|
// Generate the result
|
||
|
$xml = "<{$root}>".$newline;
|
||
|
foreach ($query->result_array() as $row)
|
||
|
{
|
||
|
$xml .= $tab."<{$element}>".$newline;
|
||
|
|
||
|
foreach ($row as $key => $val)
|
||
|
{
|
||
|
$xml .= $tab.$tab."<{$key}>".xml_convert($val)."</{$key}>".$newline;
|
||
|
}
|
||
|
$xml .= $tab."</{$element}>".$newline;
|
||
|
}
|
||
|
$xml .= "</$root>".$newline;
|
||
|
|
||
|
return $xml;
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Database Backup
|
||
|
*
|
||
|
* @access public
|
||
|
* @return void
|
||
|
*/
|
||
|
function backup($params = array())
|
||
|
{
|
||
|
// If the parameters have not been submitted as an
|
||
|
// array then we know that it is simply the table
|
||
|
// name, which is a valid short cut.
|
||
|
if (is_string($params))
|
||
|
{
|
||
|
$params = array('tables' => $params);
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Set up our default preferences
|
||
|
$prefs = array(
|
||
|
'tables' => array(),
|
||
|
'ignore' => array(),
|
||
|
'filename' => '',
|
||
|
'format' => 'gzip', // gzip, zip, txt
|
||
|
'add_drop' => TRUE,
|
||
|
'add_insert' => TRUE,
|
||
|
'newline' => "\n"
|
||
|
);
|
||
|
|
||
|
// Did the user submit any preferences? If so set them....
|
||
|
if (count($params) > 0)
|
||
|
{
|
||
|
foreach ($prefs as $key => $val)
|
||
|
{
|
||
|
if (isset($params[$key]))
|
||
|
{
|
||
|
$prefs[$key] = $params[$key];
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Are we backing up a complete database or individual tables?
|
||
|
// If no table names were submitted we'll fetch the entire table list
|
||
|
if (count($prefs['tables']) == 0)
|
||
|
{
|
||
|
$prefs['tables'] = $this->db->list_tables();
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Validate the format
|
||
|
if ( ! in_array($prefs['format'], array('gzip', 'zip', 'txt'), TRUE))
|
||
|
{
|
||
|
$prefs['format'] = 'txt';
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Is the encoder supported? If not, we'll either issue an
|
||
|
// error or use plain text depending on the debug settings
|
||
|
if (($prefs['format'] == 'gzip' AND ! @function_exists('gzencode'))
|
||
|
OR ($prefs['format'] == 'zip' AND ! @function_exists('gzcompress')))
|
||
|
{
|
||
|
if ($this->db->db_debug)
|
||
|
{
|
||
|
return $this->db->display_error('db_unsuported_compression');
|
||
|
}
|
||
|
|
||
|
$prefs['format'] = 'txt';
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Set the filename if not provided - Only needed with Zip files
|
||
|
if ($prefs['filename'] == '' AND $prefs['format'] == 'zip')
|
||
|
{
|
||
|
$prefs['filename'] = (count($prefs['tables']) == 1) ? $prefs['tables'] : $this->db->database;
|
||
|
$prefs['filename'] .= '_'.date('Y-m-d_H-i', time());
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Was a Gzip file requested?
|
||
|
if ($prefs['format'] == 'gzip')
|
||
|
{
|
||
|
return gzencode($this->_backup($prefs));
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Was a text file requested?
|
||
|
if ($prefs['format'] == 'txt')
|
||
|
{
|
||
|
return $this->_backup($prefs);
|
||
|
}
|
||
|
|
||
|
// ------------------------------------------------------
|
||
|
|
||
|
// Was a Zip file requested?
|
||
|
if ($prefs['format'] == 'zip')
|
||
|
{
|
||
|
// If they included the .zip file extension we'll remove it
|
||
|
if (preg_match("|.+?\.zip$|", $prefs['filename']))
|
||
|
{
|
||
|
$prefs['filename'] = str_replace('.zip', '', $prefs['filename']);
|
||
|
}
|
||
|
|
||
|
// Tack on the ".sql" file extension if needed
|
||
|
if ( ! preg_match("|.+?\.sql$|", $prefs['filename']))
|
||
|
{
|
||
|
$prefs['filename'] .= '.sql';
|
||
|
}
|
||
|
|
||
|
// Load the Zip class and output it
|
||
|
|
||
|
$CI =& get_instance();
|
||
|
$CI->load->library('zip');
|
||
|
$CI->zip->add_data($prefs['filename'], $this->_backup($prefs));
|
||
|
return $CI->zip->get_zip();
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
|
||
|
/* End of file DB_utility.php */
|
||
|
/* Location: ./system/database/DB_utility.php */
|