This repository has been archived on 2018-10-12. You can view files and clone it, but cannot push or open issues or pull requests.
OpenSQLManager/databases/sqlite.php

182 lines
3.6 KiB
PHP

<?php
/**
* OpenSQLManager
*
* Free Database manager for Open Source Databases
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/OpenSQLManager
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* SQLite specific class
*
* @extends DB_PDO
*/
class SQLite extends DB_PDO {
protected $statement;
/**
* Open SQLite Database
*
* @param string $dsn
*/
public function __construct($dsn, $user=NULL, $pass=NULL)
{
// DSN is simply `sqlite:/path/to/db`
parent::__construct("sqlite:{$dsn}", $user, $pass);
$class = __CLASS__."_manip";
$this->manip = new $class;
}
// --------------------------------------------------------------------------
/**
* Empty a table
*
* @param string $table
*/
public function truncate($table)
{
// SQLite has a TRUNCATE optimization,
// but no support for the actual command.
$sql = 'DELETE FROM :table';
$this->prepare_query($sql, array(
':table' => $table
));
$this->statement->execute();
}
// --------------------------------------------------------------------------
/**
* List tables for the current database
*
* @return mixed
*/
public function get_tables()
{
$tables = array();
$sql = <<<SQL
SELECT "name", "sql"
FROM "sqlite_master"
WHERE "type"='table'
SQL;
$res = $this->query($sql);
$result = $res->fetchAll(PDO::FETCH_ASSOC);
foreach($result as $r)
{
$tables[$r['name']] = $r['sql'];
}
return $tables;
}
// --------------------------------------------------------------------------
/**
* List system tables for the current database
*
* @return array
*/
public function get_system_tables()
{
//SQLite only has the sqlite_master table
// that is of any importance.
return array('sqlite_master');
}
// --------------------------------------------------------------------------
/**
* Load a database for the current connection
*
* @param string $db
* @param string $name
*/
public function load_database($db, $name)
{
$sql = "ATTACH DATABASE '{$db}' AS \"{$name}\"";
$this->query($sql);
}
// --------------------------------------------------------------------------
/**
* Unload a database from the current connection
*
* @param string $name
*/
public function unload_database($name)
{
$sql = 'DETACH DATABASE ":name"';
$this->prepare_query($sql, array(
':name' => $name,
));
$this->statement->execute();
}
// --------------------------------------------------------------------------
/**
* Return the number of rows returned for a SELECT query
*
* @return int
*/
public function num_rows()
{
return (isset($this->statement)) ? $this->statement->rowCount : FALSE;
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
// Fairly easy for SQLite...just query the master table
$sql = 'SELECT "sql" FROM "sqlite_master"';
$res = $this->query($sql);
$result = $res->fetchAll(PDO::FETCH_ASSOC);
$sql_array = array();
foreach($result as $r)
{
$sql_array[] = $r['sql'];
}
$sql_structure = implode("\n\n", $sql_array);
return $sql_structure;
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's data
*
* @return string
*/
public function backup_data()
{
// @todo Implement Backup function
return '';
}
}
//End of sqlite.php