OpenSQLManager/src/databases/sqlite.php

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<?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
*/
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// --------------------------------------------------------------------------
/**
* SQLite specific class
*
* @extends DB_PDO
*/
class SQLite extends DB_PDO {
/**
* Open SQLite Database
*
* @param string $dsn
*/
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function __construct($dsn)
{
// DSN is simply `sqlite:/path/to/db`
parent::__construct("sqlite:{$dsn}");
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}
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/**
* Empty a table
*
* @param string $table
*/
function truncate($table)
{
// SQLite has a TRUNCATE optimization,
// but no support for the actual command.
$sql = "DELETE FROM {$table}";
$this->query($sql);
}
/**
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* List tables for the current database
*
* @return mixed
*/
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function get_tables()
{
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$res = $this->query("SELECT name FROM sqlite_master WHERE type='table'");
return $res->fetchAll(PDO::FETCH_ASSOC);
}
/**
* Return the number of rows returned for a SELECT query
*
* @return int
*/
function num_rows()
{
// TODO: Implement
}
}
/**
* Database manipulation class
*/
class SQLite_manip extends SQLite {
function __construct($dsn)
{
parent::__construct($dsn);
}
/**
* Convenience function to create a new table
*
* @param string $name //Name of the table
* @param array $columns //columns as straight array and/or column => type pairs
* @param array $constraints // column => constraint pairs
* @param array $indexes // column => index pairs
* @return string
*/
function create_table($name, $columns, $constraints, $indexes)
{
$column_array = array();
// Reorganize into an array indexed with column information
// Eg $column_array[$colname] = array(
// 'type' => ...,
// 'constraint' => ...,
// 'index' => ...,
// )
foreach($columns as $colname => $type)
{
if(is_numeric($colname))
{
$colname = $type;
}
$column_array[$colname] = array();
$column_array[$colname]['type'] = ($type !== $colname) ? $type : '';
}
if( ! empty($constraints))
{
foreach($constraints as $col => $const)
{
$column_array[$col]['constraint'] = $const;
}
}
if( ! empty($indexes))
{
foreach($indexes as $col => $ind)
{
$column_array[$col]['index'] = $ind;
}
}
// Generate the sql for the creation of the table
$sql = "CREATE TABLE {$name} (";
$sql .= ")";
}
/**
* Create an sqlite database file
*
* @param $path
*/
function create_db($path)
{
// Create the file if it doesn't exist
if( ! file_exists($path))
{
touch($path);
}
}
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}