Subversion Repositories Applications.papyrus

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2005 Aurelien 1 
<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
2 
/**
3 
 * CodeIgniter
4 
 *
5 
 * An open source application development framework for PHP 4.3.2 or newer
6 
 *
7 
 * @package		CodeIgniter
8 
 * @author		ExpressionEngine Dev Team
9 
 * @copyright	Copyright (c) 2008, EllisLab, Inc.
10 
 * @license		http://codeigniter.com/user_guide/license.html
11 
 * @link		http://codeigniter.com
12 
 * @since		Version 1.0
13 
 * @filesource
14 
 */
15
16 
// ------------------------------------------------------------------------
17
18 
/**
19 
 * Initialize the database
20 
 *
21 
 * @category	Database
22 
 * @author		ExpressionEngine Dev Team
23 
 * @link		http://codeigniter.com/user_guide/database/
24 
 */
25 
function &DB($params = '', $active_record_override = FALSE)
26 
{
27 
	// Load the DB config file if a DSN string wasn't passed
28 
	if (is_string($params) AND strpos($params, '://') === FALSE)
29 
	{
30 
		include(APPPATH.'config/database'.EXT);
31
32 
		if ( ! isset($db) OR count($db) == 0)
33 
		{
34 
			show_error('No database connection settings were found in the database config file.');
35 
		}
36
37 
		if ($params != '')
38 
		{
39 
			$active_group = $params;
40 
		}
41
42 
		if ( ! isset($active_group) OR ! isset($db[$active_group]))
43 
		{
44 
			show_error('You have specified an invalid database connection group.');
45 
		}
46
47 
		$params = $db[$active_group];
48 
	}
49 
	elseif (is_string($params))
50 
	{
51
52 
		/* parse the URL from the DSN string
53 
		*  Database settings can be passed as discreet
54 
	 	*  parameters or as a data source name in the first
55 
	 	*  parameter. DSNs must have this prototype:
56 
	 	*  $dsn = 'driver://username:password@hostname/database';
57 
		*/
58
59 
		if (($dns = @parse_url($params)) === FALSE)
60 
		{
61 
			show_error('Invalid DB Connection String');
62 
		}
63
64 
		$params = array(
65 
							'dbdriver'	=> $dns['scheme'],
66 
							'hostname'	=> (isset($dns['host'])) ? rawurldecode($dns['host']) : '',
67 
							'username'	=> (isset($dns['user'])) ? rawurldecode($dns['user']) : '',
68 
							'password'	=> (isset($dns['pass'])) ? rawurldecode($dns['pass']) : '',
69 
							'database'	=> (isset($dns['path'])) ? rawurldecode(substr($dns['path'], 1)) : ''
70 
						);
71
72 
		// were additional config items set?
73 
		if (isset($dns['query']))
74 
		{
75 
			parse_str($dns['query'], $extra);
76
77 
			foreach($extra as $key => $val)
78 
			{
79 
				// booleans please
80 
				if (strtoupper($val) == "TRUE")
81 
				{
82 
					$val = TRUE;
83 
				}
84 
				elseif (strtoupper($val) == "FALSE")
85 
				{
86 
					$val = FALSE;
87 
				}
88
89 
				$params[$key] = $val;
90 
			}
91 
		}
92 
	}
93
94 
	// No DB specified yet?  Beat them senseless...
95 
	if ( ! isset($params['dbdriver']) OR $params['dbdriver'] == '')
96 
	{
97 
		show_error('You have not selected a database type to connect to.');
98 
	}
99
100 
	// Load the DB classes.  Note: Since the active record class is optional
101 
	// we need to dynamically create a class that extends proper parent class
102 
	// based on whether we're using the active record class or not.
103 
	// Kudos to Paul for discovering this clever use of eval()
104
105 
	if ($active_record_override == TRUE)
106 
	{
107 
		$active_record = TRUE;
108 
	}
109
110 
	require_once(BASEPATH.'database/DB_driver'.EXT);
111
112 
	if ( ! isset($active_record) OR $active_record == TRUE)
113 
	{
114 
		require_once(BASEPATH.'database/DB_active_rec'.EXT);
115
116 
		if ( ! class_exists('CI_DB'))
117 
		{
118 
			eval('class CI_DB extends CI_DB_active_record { }');
119 
		}
120 
	}
121 
	else
122 
	{
123 
		if ( ! class_exists('CI_DB'))
124 
		{
125 
			eval('class CI_DB extends CI_DB_driver { }');
126 
		}
127 
	}
128
129 
	require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver'.EXT);
130
131 
	// Instantiate the DB adapter
132 
	$driver = 'CI_DB_'.$params['dbdriver'].'_driver';
133 
	$DB =& new $driver($params);
134
135 
	if ($DB->autoinit == TRUE)
136 
	{
137 
		$DB->initialize();
138 
	}
139
140 
	return $DB;
141 
}
142
143
144
145 
/* End of file DB.php */
146 
/* Location: ./system/database/DB.php */