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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
abstract class Database extends Database_Core {
protected $_table_names;
public function add_table_prefixes($sql) {
$prefix = $this->config["table_prefix"];
if (strpos($sql, "SHOW TABLES") === 0) {
/*
* Don't ignore "show tables", otherwise we could have a infinite
* @todo this may have to be changed if we support more than mysql
*/
return $sql;
} else if (strpos($sql, "CREATE TABLE") === 0) {
// Creating a new table add it to the table cache.
$open_brace = strpos($sql, "{") + 1;
$close_brace = strpos($sql, "}", $open_brace);
$name = substr($sql, $open_brace, $close_brace - $open_brace);
$this->_table_names["{{$name}}"] = "{$prefix}$name";
}
if (!isset($this->_table_names)) {
// This should only run once on the first query
$this->_table_names =array();
$len = strlen($prefix);
foreach($this->list_tables() as $table_name) {
if ($len > 0) {
$naked_name = strpos($table_name, $prefix) !== 0 ?
$table_name : substr($table_name, $len);
} else {
$naked_name = $table_name;
}
$this->_table_names["{{$naked_name}}"] = $table_name;
}
}
return empty($this->_table_names) ? $sql : strtr($sql, $this->_table_names);
}
}
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