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
|
<?php
/**
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2005-2012, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| PURPOSE: |
| Database wrapper class that implements PHP PDO functions |
| for SQLite database |
+-----------------------------------------------------------------------+
| Author: Aleksander Machniak <alec@alec.pl> |
+-----------------------------------------------------------------------+
*/
/**
* Database independent query interface
* This is a wrapper for the PHP PDO
*
* @package Framework
* @subpackage Database
*/
class rcube_db_sqlite extends rcube_db
{
public $db_provider = 'sqlite';
/**
* Database character set
*/
protected function set_charset($charset)
{
}
/**
* Prepare connection
*/
protected function conn_prepare($dsn)
{
// Create database file, required by PDO to exist on connection
if (!empty($dsn['database']) && !file_exists($dsn['database'])) {
$created = touch($dsn['database']);
// File mode setting, for compat. with MDB2
if (!empty($dsn['mode']) && $created) {
chmod($dsn['database'], octdec($dsn['mode']));
}
}
}
/**
* Configure connection, create database if not exists
*/
protected function conn_configure($dsn, $dbh)
{
// we emulate via callback some missing functions
$dbh->sqliteCreateFunction('unix_timestamp', array('rcube_db_sqlite', 'sqlite_unix_timestamp'), 1);
$dbh->sqliteCreateFunction('now', array('rcube_db_sqlite', 'sqlite_now'), 0);
// Initialize database structure in file is empty
if (!empty($dsn['database']) && !filesize($dsn['database'])) {
$data = file_get_contents(RCUBE_INSTALL_PATH . 'SQL/sqlite.initial.sql');
if (strlen($data)) {
$this->debug('INITIALIZE DATABASE');
$q = $dbh->exec($data);
if ($q === false) {
$error = $dbh->errorInfo();
$this->db_error = true;
$this->db_error_msg = sprintf('[%s] %s', $error[1], $error[2]);
rcube::raise_error(array('code' => 500, 'type' => 'db',
'line' => __LINE__, 'file' => __FILE__,
'message' => $this->db_error_msg), true, false);
}
}
}
}
/**
* Callback for sqlite: unix_timestamp()
*/
public static function sqlite_unix_timestamp($timestamp = '')
{
$timestamp = trim($timestamp);
if (!$timestamp) {
$ret = time();
}
else if (!preg_match('/^[0-9]+$/s', $timestamp)) {
$ret = strtotime($timestamp);
}
else {
$ret = $timestamp;
}
return $ret;
}
/**
* Callback for sqlite: now()
*/
public static function sqlite_now()
{
return date("Y-m-d H:i:s");
}
/**
* Returns list of tables in database
*
* @return array List of all tables of the current database
*/
public function list_tables()
{
if ($this->tables === null) {
$q = $this->query('SELECT name FROM sqlite_master'
.' WHERE type = \'table\' ORDER BY name');
$this->tables = $q ? $q->fetchAll(PDO::FETCH_COLUMN, 0) : array();
}
return $this->tables;
}
/**
* Returns list of columns in database table
*
* @param string $table Table name
*
* @return array List of table cols
*/
public function list_cols($table)
{
$q = $this->query('SELECT sql FROM sqlite_master WHERE type = ? AND name = ?',
array('table', $table));
$columns = array();
if ($sql = $this->fetch_array($q)) {
$sql = $sql[0];
$start_pos = strpos($sql, '(');
$end_pos = strrpos($sql, ')');
$sql = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
$lines = explode(',', $sql);
foreach ($lines as $line) {
$line = explode(' ', trim($line));
if ($line[0] && strpos($line[0], '--') !== 0) {
$column = $line[0];
$columns[] = trim($column, '"');
}
}
}
return $columns;
}
/**
* Build DSN string for PDO constructor
*/
protected function dsn_string($dsn)
{
return $dsn['phptype'] . ':' . $dsn['database'];
}
}
|
