1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 4.3.2 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2006, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* MySQL Utility Class
*
* @category Database
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_mysql_utility extends CI_DB_utility {
/**
* List databases
*
* @access private
* @return bool
*/
function _list_databases()
{
return "SHOW DATABASES";
}
// --------------------------------------------------------------------
/**
* Optimize table query
*
* Generates a platform-specific query so that a table can be optimized
*
* @access private
* @param string the table name
* @return object
*/
function _optimize_table($table)
{
return "OPTIMIZE TABLE ".$this->db->_escape_table($table);
}
// --------------------------------------------------------------------
/**
* Repair table query
*
* Generates a platform-specific query so that a table can be repaired
*
* @access private
* @param string the table name
* @return object
*/
function _repair_table($table)
{
return "REPAIR TABLE ".$this->db->_escape_table($table);
}
// --------------------------------------------------------------------
/**
* MySQL Export
*
* @access private
* @param array Preferences
* @return mixed
*/
function _backup($params = array())
{
if (count($params) == 0)
{
return FALSE;
}
// Extract the prefs for simplicity
extract($params);
// Build the output
$output = '';
foreach ((array)$tables as $table)
{
// Is the table in the "ignore" list?
if (in_array($table, (array)$ignore, TRUE))
{
continue;
}
// Get the table schema
$query = $this->db->query("SHOW CREATE TABLE `".$this->db->database.'`.'.$table);
// No result means the table name was invalid
if ($query === FALSE)
{
continue;
}
// Write out the table schema
$output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
if ($add_drop == TRUE)
{
$output .= 'DROP TABLE IF EXISTS '.$table.';'.$newline.$newline;
}
$i = 0;
$result = $query->result_array();
foreach ($result[0] as $val)
{
if ($i++ % 2)
{
$output .= $val.';'.$newline.$newline;
}
}
// If inserts are not needed we're done...
if ($add_insert == FALSE)
{
continue;
}
// Grab all the data from the current table
$query = $this->db->query("SELECT * FROM $table");
if ($query->num_rows() == 0)
{
continue;
}
// Fetch the field names and determine if the field is an
// integer type. We use this info to decide whether to
// surround the data with quotes or not
$i = 0;
$field_str = '';
$is_int = array();
while ($field = mysql_fetch_field($query->result_id))
{
// Most versions of MySQL store timestamp as a string
$is_int[$i] = (in_array(
strtolower(mysql_field_type($query->result_id, $i)),
array('tinyint', 'smallint', 'mediumint', 'int', 'bigint'), //, 'timestamp'),
TRUE)
) ? TRUE : FALSE;
// Create a string of field names
$field_str .= $field->name.', ';
$i++;
}
// Trim off the end comma
$field_str = preg_replace( "/, $/" , "" , $field_str);
// Build the insert string
foreach ($query->result_array() as $row)
{
$val_str = '';
$i = 0;
foreach ($row as $v)
{
// Is the value NULL?
if ($v === NULL)
{
$val_str .= 'NULL';
}
else
{
// Do a little formatting...
$v = str_replace(array("\x00", "\x0a", "\x0d", "\x1a"), array('\0', '\n', '\r', '\Z'), $v);
$v = str_replace(array("\n", "\r", "\t"), array('\n', '\r', '\t'), $v);
$v = str_replace('\\', '\\\\', $v);
$v = str_replace('\'', '\\\'', $v);
$v = str_replace('\\\n', '\n', $v);
$v = str_replace('\\\r', '\r', $v);
$v = str_replace('\\\t', '\t', $v);
// Escape the data if it's not an integer
if ($is_int[$i] == FALSE)
{
$val_str .= $this->db->escape($v);
}
else
{
$val_str .= $v;
}
}
// Append a comma
$val_str .= ', ';
$i++;
}
// Remove the comma at the end of the string
$val_str = preg_replace( "/, $/" , "" , $val_str);
// Build the INSERT string
$output .= 'INSERT INTO '.$table.' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
}
$output .= $newline.$newline;
}
return $output;
}
/**
*
* The functions below have been deprecated as of 1.6, and are only here for backwards
* compatibility. They now reside in dbforge(). The use of dbutils for database manipulation
* is STRONGLY discouraged in favour if using dbforge.
*
*/
/**
* Create database
*
* @access private
* @param string the database name
* @return bool
*/
function _create_database($name)
{
return "CREATE DATABASE ".$name;
}
// --------------------------------------------------------------------
/**
* Drop database
*
* @access private
* @param string the database name
* @return bool
*/
function _drop_database($name)
{
return "DROP DATABASE ".$name;
}
}
/* End of file mysql_utility.php */
/* Location: ./system/database/drivers/mysql/mysql_utility.php */
|
