| commit | author | age | ||
| 0d94fd | 1 | <?php |
| AM | 2 | |
| 3 | /* | |
| 4 | +-----------------------------------------------------------------------+ | |
| 5 | | program/include/rcube_db_sqlite.php | | |
| 6 | | | | |
| 7 | | This file is part of the Roundcube Webmail client | | |
| 8 | | Copyright (C) 2005-2012, The Roundcube Dev Team | | |
| 9 | | | | |
| 10 | | Licensed under the GNU General Public License version 3 or | | |
| 11 | | any later version with exceptions for skins & plugins. | | |
| 12 | | See the README file for a full license statement. | | |
| 13 | | | | |
| 14 | | PURPOSE: | | |
| 15 | | Database wrapper class that implements PHP PDO functions | | |
| 16 | | for SQLite database | | |
| 17 | | | | |
| 18 | +-----------------------------------------------------------------------+ | |
| 19 | | Author: Aleksander Machniak <alec@alec.pl> | | |
| 20 | +-----------------------------------------------------------------------+ | |
| 21 | */ | |
| 22 | ||
| 23 | ||
| 24 | /** | |
| 25 | * Database independent query interface | |
| 26 | * | |
| 27 | * This is a wrapper for the PHP PDO | |
| 28 | * | |
| 29 | * @package Database | |
| 30 | * @version 1.0 | |
| 31 | */ | |
| 32 | class rcube_db_sqlite extends rcube_db | |
| 33 | { | |
| 8c2375 | 34 | /** |
| AM | 35 | * Database character set |
| 36 | */ | |
| 0d94fd | 37 | protected function set_charset($charset) |
| AM | 38 | { |
| 39 | } | |
| 40 | ||
| 8c2375 | 41 | /** |
| AM | 42 | * Prepare connection |
| 43 | */ | |
| 0d94fd | 44 | protected function conn_prepare($dsn) |
| AM | 45 | { |
| 46 | // Create database file, required by PDO to exist on connection | |
| 47 | if (!empty($dsn['database']) && !file_exists($dsn['database'])) { | |
| 48 | touch($dsn['database']); | |
| 49 | } | |
| 50 | } | |
| 51 | ||
| 8c2375 | 52 | /** |
| AM | 53 | * Configure connection, create database if not exists |
| 54 | */ | |
| 0d94fd | 55 | protected function conn_configure($dsn, $dbh) |
| AM | 56 | { |
| 57 | // we emulate via callback some missing functions | |
| 58 | $dbh->sqliteCreateFunction('unix_timestamp', array('rcube_db_sqlite', 'sqlite_unix_timestamp'), 1); | |
| 59 | $dbh->sqliteCreateFunction('now', array('rcube_db_sqlite', 'sqlite_now'), 0); | |
| 60 | ||
| 61 | // Initialize database structure in file is empty | |
| 62 | if (!empty($dsn['database']) && !filesize($dsn['database'])) { | |
| 63 | $data = file_get_contents(INSTALL_PATH . 'SQL/sqlite.initial.sql'); | |
| 64 | ||
| 65 | if (strlen($data)) { | |
| 66 | if ($this->options['debug_mode']) { | |
| 67 | $this::debug('INITIALIZE DATABASE'); | |
| 68 | } | |
| 69 | ||
| 70 | $q = $dbh->exec($data); | |
| 71 | ||
| 72 | if ($q === false) { | |
| 73 | $error = $this->dbh->errorInfo(); | |
| 74 | $this->db_error = true; | |
| 75 | $this->db_error_msg = sprintf('[%s] %s', $error[1], $error[2]); | |
| 76 | ||
| 77 | rcube::raise_error(array('code' => 500, 'type' => 'db', | |
| 78 | 'line' => __LINE__, 'file' => __FILE__, | |
| 79 | 'message' => $this->db_error_msg), true, false); | |
| 80 | } | |
| 81 | } | |
| 82 | } | |
| 83 | } | |
| 84 | ||
| 85 | /** | |
| 86 | * Callback for sqlite: unix_timestamp() | |
| 87 | */ | |
| 88 | public static function sqlite_unix_timestamp($timestamp = '') | |
| 89 | { | |
| 90 | $timestamp = trim($timestamp); | |
| 91 | if (!$timestamp) { | |
| 92 | $ret = time(); | |
| 93 | } | |
| 94 | else if (!preg_match('/^[0-9]+$/s', $timestamp)) { | |
| 95 | $ret = strtotime($timestamp); | |
| 96 | } | |
| 97 | else { | |
| 98 | $ret = $timestamp; | |
| 99 | } | |
| 100 | ||
| 101 | return $ret; | |
| 102 | } | |
| 103 | ||
| 104 | /** | |
| 105 | * Callback for sqlite: now() | |
| 106 | */ | |
| 107 | public static function sqlite_now() | |
| 108 | { | |
| 109 | return date("Y-m-d H:i:s"); | |
| 110 | } | |
| 111 | ||
| 112 | /** | |
| 113 | * Returns list of tables in database | |
| 114 | * | |
| 115 | * @return array List of all tables of the current database | |
| 116 | */ | |
| 117 | public function list_tables() | |
| 118 | { | |
| 119 | if ($this->tables === null) { | |
| 120 | $q = $this->query('SELECT name FROM sqlite_master' | |
| 121 | .' WHERE type = \'table\' ORDER BY name'); | |
| 122 | ||
| 123 | if ($res = $this->_get_result($q)) { | |
| 124 | $this->tables = $res->fetchAll(PDO::FETCH_COLUMN, 0); | |
| 125 | } | |
| 126 | else { | |
| 127 | $this->tables = array(); | |
| 128 | } | |
| 129 | } | |
| 130 | ||
| 131 | return $this->tables; | |
| 132 | } | |
| 133 | ||
| 134 | /** | |
| 135 | * Returns list of columns in database table | |
| 136 | * | |
| 137 | * @param string Table name | |
| 138 | * | |
| 139 | * @return array List of table cols | |
| 140 | */ | |
| 141 | public function list_cols($table) | |
| 142 | { | |
| 143 | $q = $this->query('SELECT sql FROM sqlite_master WHERE type = ? AND name = ?', | |
| 144 | array('table', $table)); | |
| 145 | ||
| 146 | $columns = array(); | |
| 147 | ||
| 148 | if ($sql = $this->fetch_array($q)) { | |
| 149 | $sql = $sql[0]; | |
| 150 | $start_pos = strpos($sql, '('); | |
| 151 | $end_pos = strrpos($sql, ')'); | |
| 152 | $sql = substr($sql, $start_pos+1, $end_pos-$start_pos-1); | |
| 153 | $lines = explode(',', $sql); | |
| 154 | ||
| 155 | foreach ($lines as $line) { | |
| 156 | $line = explode(' ', trim($line)); | |
| 157 | ||
| 158 | if ($line[0] && strpos($line[0], '--') !== 0) { | |
| 159 | $column = $line[0]; | |
| 160 | $columns[] = trim($column, '"'); | |
| 161 | } | |
| 162 | } | |
| 163 | } | |
| 164 | ||
| 165 | return $columns; | |
| 166 | } | |
| 167 | ||
| 8c2375 | 168 | /** |
| AM | 169 | * Build DSN string for PDO constructor |
| 170 | */ | |
| 0d94fd | 171 | protected function dsn_string($dsn) |
| AM | 172 | { |
| 173 | return $dsn['phptype'] . ':' . $dsn['database']; | |
| 174 | } | |
| 175 | } | |
