forked from GNUsocial/gnu-social
961 lines
30 KiB
PHP
961 lines
30 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* The PEAR DB driver for PHP's sqlite extension
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* for interacting with SQLite databases
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This source file is subject to version 3.0 of the PHP license
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* that is available through the world-wide-web at the following URI:
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* http://www.php.net/license/3_0.txt. If you did not receive a copy of
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* the PHP License and are unable to obtain it through the web, please
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* send a note to license@php.net so we can mail you a copy immediately.
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*
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* @category Database
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* @package DB
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* @author Urs Gehrig <urs@circle.ch>
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* @author Mika Tuupola <tuupola@appelsiini.net>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2007 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0 3.0
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* @version CVS: $Id: sqlite.php,v 1.118 2007/11/26 22:57:18 aharvey Exp $
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* @link http://pear.php.net/package/DB
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*/
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/**
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* Obtain the DB_common class so it can be extended from
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*/
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require_once 'DB/common.php';
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/**
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* The methods PEAR DB uses to interact with PHP's sqlite extension
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* for interacting with SQLite databases
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*
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* These methods overload the ones declared in DB_common.
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*
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* NOTICE: This driver needs PHP's track_errors ini setting to be on.
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* It is automatically turned on when connecting to the database.
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* Make sure your scripts don't turn it off.
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*
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* @category Database
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* @package DB
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* @author Urs Gehrig <urs@circle.ch>
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* @author Mika Tuupola <tuupola@appelsiini.net>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2007 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0 3.0
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* @version Release: 1.7.14RC1
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* @link http://pear.php.net/package/DB
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*/
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class DB_sqlite extends DB_common
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{
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// {{{ properties
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/**
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* The DB driver type (mysql, oci8, odbc, etc.)
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* @var string
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*/
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var $phptype = 'sqlite';
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/**
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* The database syntax variant to be used (db2, access, etc.), if any
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* @var string
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*/
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var $dbsyntax = 'sqlite';
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/**
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* The capabilities of this DB implementation
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*
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* The 'new_link' element contains the PHP version that first provided
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* new_link support for this DBMS. Contains false if it's unsupported.
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*
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* Meaning of the 'limit' element:
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* + 'emulate' = emulate with fetch row by number
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* + 'alter' = alter the query
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* + false = skip rows
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*
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* @var array
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*/
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var $features = array(
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'limit' => 'alter',
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'new_link' => false,
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'numrows' => true,
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'pconnect' => true,
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'prepare' => false,
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'ssl' => false,
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'transactions' => false,
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);
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/**
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* A mapping of native error codes to DB error codes
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*
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* {@internal Error codes according to sqlite_exec. See the online
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* manual at http://sqlite.org/c_interface.html for info.
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* This error handling based on sqlite_exec is not yet implemented.}}
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*
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* @var array
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*/
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var $errorcode_map = array(
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);
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/**
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* The raw database connection created by PHP
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* @var resource
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*/
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var $connection;
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/**
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* The DSN information for connecting to a database
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* @var array
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*/
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var $dsn = array();
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/**
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* SQLite data types
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*
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* @link http://www.sqlite.org/datatypes.html
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*
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* @var array
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*/
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var $keywords = array (
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'BLOB' => '',
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'BOOLEAN' => '',
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'CHARACTER' => '',
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'CLOB' => '',
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'FLOAT' => '',
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'INTEGER' => '',
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'KEY' => '',
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'NATIONAL' => '',
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'NUMERIC' => '',
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'NVARCHAR' => '',
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'PRIMARY' => '',
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'TEXT' => '',
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'TIMESTAMP' => '',
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'UNIQUE' => '',
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'VARCHAR' => '',
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'VARYING' => '',
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);
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/**
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* The most recent error message from $php_errormsg
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* @var string
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* @access private
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*/
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var $_lasterror = '';
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// }}}
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// {{{ constructor
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/**
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* This constructor calls <kbd>$this->DB_common()</kbd>
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*
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* @return void
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*/
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function DB_sqlite()
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{
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$this->DB_common();
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}
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// }}}
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// {{{ connect()
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/**
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* Connect to the database server, log in and open the database
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*
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* Don't call this method directly. Use DB::connect() instead.
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*
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* PEAR DB's sqlite driver supports the following extra DSN options:
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* + mode The permissions for the database file, in four digit
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* chmod octal format (eg "0600").
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*
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* Example of connecting to a database in read-only mode:
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* <code>
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* require_once 'DB.php';
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*
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* $dsn = 'sqlite:///path/and/name/of/db/file?mode=0400';
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* $options = array(
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* 'portability' => DB_PORTABILITY_ALL,
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* );
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*
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* $db = DB::connect($dsn, $options);
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* if (PEAR::isError($db)) {
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* die($db->getMessage());
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* }
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* </code>
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*
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* @param array $dsn the data source name
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* @param bool $persistent should the connection be persistent?
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*
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* @return int DB_OK on success. A DB_Error object on failure.
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*/
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function connect($dsn, $persistent = false)
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{
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if (!PEAR::loadExtension('sqlite')) {
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
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}
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$this->dsn = $dsn;
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if ($dsn['dbsyntax']) {
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$this->dbsyntax = $dsn['dbsyntax'];
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}
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if (!$dsn['database']) {
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return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION);
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}
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if ($dsn['database'] !== ':memory:') {
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if (!file_exists($dsn['database'])) {
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if (!touch($dsn['database'])) {
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return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
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}
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if (!isset($dsn['mode']) ||
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!is_numeric($dsn['mode']))
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{
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$mode = 0644;
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} else {
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$mode = octdec($dsn['mode']);
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}
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if (!chmod($dsn['database'], $mode)) {
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return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
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}
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if (!file_exists($dsn['database'])) {
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return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
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}
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}
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if (!is_file($dsn['database'])) {
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return $this->sqliteRaiseError(DB_ERROR_INVALID);
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}
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if (!is_readable($dsn['database'])) {
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return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION);
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}
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}
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$connect_function = $persistent ? 'sqlite_popen' : 'sqlite_open';
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// track_errors must remain on for simpleQuery()
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@ini_set('track_errors', 1);
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$php_errormsg = '';
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if (!$this->connection = @$connect_function($dsn['database'])) {
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return $this->raiseError(DB_ERROR_NODBSELECTED,
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null, null, null,
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$php_errormsg);
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}
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return DB_OK;
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}
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// }}}
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// {{{ disconnect()
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/**
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* Disconnects from the database server
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*
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* @return bool TRUE on success, FALSE on failure
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*/
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function disconnect()
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{
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$ret = @sqlite_close($this->connection);
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$this->connection = null;
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return $ret;
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}
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// }}}
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// {{{ simpleQuery()
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/**
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* Sends a query to the database server
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*
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* NOTICE: This method needs PHP's track_errors ini setting to be on.
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* It is automatically turned on when connecting to the database.
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* Make sure your scripts don't turn it off.
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*
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* @param string the SQL query string
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*
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* @return mixed + a PHP result resrouce for successful SELECT queries
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* + the DB_OK constant for other successful queries
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* + a DB_Error object on failure
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*/
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function simpleQuery($query)
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{
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$ismanip = $this->_checkManip($query);
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$this->last_query = $query;
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$query = $this->modifyQuery($query);
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$php_errormsg = '';
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$result = @sqlite_query($query, $this->connection);
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$this->_lasterror = $php_errormsg ? $php_errormsg : '';
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$this->result = $result;
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if (!$this->result) {
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return $this->sqliteRaiseError(null);
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}
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// sqlite_query() seems to allways return a resource
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// so cant use that. Using $ismanip instead
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if (!$ismanip) {
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$numRows = $this->numRows($result);
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if (is_object($numRows)) {
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// we've got PEAR_Error
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return $numRows;
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}
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return $result;
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}
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return DB_OK;
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}
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// }}}
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// {{{ nextResult()
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/**
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* Move the internal sqlite result pointer to the next available result
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*
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* @param resource $result the valid sqlite result resource
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*
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* @return bool true if a result is available otherwise return false
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*/
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function nextResult($result)
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{
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return false;
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}
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// }}}
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// {{{ fetchInto()
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/**
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* Places a row from the result set into the given array
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*
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* Formating of the array and the data therein are configurable.
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* See DB_result::fetchInto() for more information.
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*
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* This method is not meant to be called directly. Use
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* DB_result::fetchInto() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result the query result resource
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* @param array $arr the referenced array to put the data in
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* @param int $fetchmode how the resulting array should be indexed
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* @param int $rownum the row number to fetch (0 = first row)
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*
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* @return mixed DB_OK on success, NULL when the end of a result set is
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* reached or on failure
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*
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* @see DB_result::fetchInto()
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*/
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function fetchInto($result, &$arr, $fetchmode, $rownum = null)
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{
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if ($rownum !== null) {
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if (!@sqlite_seek($this->result, $rownum)) {
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return null;
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}
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}
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if ($fetchmode & DB_FETCHMODE_ASSOC) {
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$arr = @sqlite_fetch_array($result, SQLITE_ASSOC);
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if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
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$arr = array_change_key_case($arr, CASE_LOWER);
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}
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/* Remove extraneous " characters from the fields in the result.
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* Fixes bug #11716. */
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if (is_array($arr) && count($arr) > 0) {
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$strippedArr = array();
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foreach ($arr as $field => $value) {
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$strippedArr[trim($field, '"')] = $value;
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}
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$arr = $strippedArr;
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}
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} else {
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$arr = @sqlite_fetch_array($result, SQLITE_NUM);
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}
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if (!$arr) {
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return null;
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}
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if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
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/*
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* Even though this DBMS already trims output, we do this because
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* a field might have intentional whitespace at the end that
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* gets removed by DB_PORTABILITY_RTRIM under another driver.
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*/
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$this->_rtrimArrayValues($arr);
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}
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if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
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$this->_convertNullArrayValuesToEmpty($arr);
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}
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return DB_OK;
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}
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// }}}
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// {{{ freeResult()
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/**
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* Deletes the result set and frees the memory occupied by the result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::free() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return bool TRUE on success, FALSE if $result is invalid
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*
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* @see DB_result::free()
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*/
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function freeResult(&$result)
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{
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// XXX No native free?
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if (!is_resource($result)) {
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return false;
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}
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$result = null;
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return true;
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}
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// }}}
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// {{{ numCols()
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/**
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* Gets the number of columns in a result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::numCols() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return int the number of columns. A DB_Error object on failure.
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*
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* @see DB_result::numCols()
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*/
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function numCols($result)
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{
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$cols = @sqlite_num_fields($result);
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if (!$cols) {
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return $this->sqliteRaiseError();
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}
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return $cols;
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}
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// }}}
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// {{{ numRows()
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|
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/**
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* Gets the number of rows in a result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::numRows() instead. It can't be declared "protected"
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* because DB_result is a separate object.
|
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*
|
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* @param resource $result PHP's query result resource
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*
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* @return int the number of rows. A DB_Error object on failure.
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*
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* @see DB_result::numRows()
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*/
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function numRows($result)
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{
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$rows = @sqlite_num_rows($result);
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if ($rows === null) {
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return $this->sqliteRaiseError();
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}
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return $rows;
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}
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|
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// }}}
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// {{{ affected()
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|
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/**
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* Determines the number of rows affected by a data maniuplation query
|
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*
|
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* 0 is returned for queries that don't manipulate data.
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*
|
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* @return int the number of rows. A DB_Error object on failure.
|
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*/
|
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function affectedRows()
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{
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return @sqlite_changes($this->connection);
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}
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|
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// }}}
|
|
// {{{ dropSequence()
|
|
|
|
/**
|
|
* Deletes a sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be deleted
|
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*
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
|
*
|
|
* @see DB_common::dropSequence(), DB_common::getSequenceName(),
|
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* DB_sqlite::nextID(), DB_sqlite::createSequence()
|
|
*/
|
|
function dropSequence($seq_name)
|
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{
|
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return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
|
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}
|
|
|
|
/**
|
|
* Creates a new sequence
|
|
*
|
|
* @param string $seq_name name of the new sequence
|
|
*
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
|
*
|
|
* @see DB_common::createSequence(), DB_common::getSequenceName(),
|
|
* DB_sqlite::nextID(), DB_sqlite::dropSequence()
|
|
*/
|
|
function createSequence($seq_name)
|
|
{
|
|
$seqname = $this->getSequenceName($seq_name);
|
|
$query = 'CREATE TABLE ' . $seqname .
|
|
' (id INTEGER UNSIGNED PRIMARY KEY) ';
|
|
$result = $this->query($query);
|
|
if (DB::isError($result)) {
|
|
return($result);
|
|
}
|
|
$query = "CREATE TRIGGER ${seqname}_cleanup AFTER INSERT ON $seqname
|
|
BEGIN
|
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DELETE FROM $seqname WHERE id<LAST_INSERT_ROWID();
|
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END ";
|
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$result = $this->query($query);
|
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if (DB::isError($result)) {
|
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return($result);
|
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}
|
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}
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|
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// }}}
|
|
// {{{ nextId()
|
|
|
|
/**
|
|
* Returns the next free id in a sequence
|
|
*
|
|
* @param string $seq_name name of the sequence
|
|
* @param boolean $ondemand when true, the seqence is automatically
|
|
* created if it does not exist
|
|
*
|
|
* @return int the next id number in the sequence.
|
|
* A DB_Error object on failure.
|
|
*
|
|
* @see DB_common::nextID(), DB_common::getSequenceName(),
|
|
* DB_sqlite::createSequence(), DB_sqlite::dropSequence()
|
|
*/
|
|
function nextId($seq_name, $ondemand = true)
|
|
{
|
|
$seqname = $this->getSequenceName($seq_name);
|
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|
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do {
|
|
$repeat = 0;
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
|
$result = $this->query("INSERT INTO $seqname (id) VALUES (NULL)");
|
|
$this->popErrorHandling();
|
|
if ($result === DB_OK) {
|
|
$id = @sqlite_last_insert_rowid($this->connection);
|
|
if ($id != 0) {
|
|
return $id;
|
|
}
|
|
} elseif ($ondemand && DB::isError($result) &&
|
|
$result->getCode() == DB_ERROR_NOSUCHTABLE)
|
|
{
|
|
$result = $this->createSequence($seq_name);
|
|
if (DB::isError($result)) {
|
|
return $this->raiseError($result);
|
|
} else {
|
|
$repeat = 1;
|
|
}
|
|
}
|
|
} while ($repeat);
|
|
|
|
return $this->raiseError($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getDbFileStats()
|
|
|
|
/**
|
|
* Get the file stats for the current database
|
|
*
|
|
* Possible arguments are dev, ino, mode, nlink, uid, gid, rdev, size,
|
|
* atime, mtime, ctime, blksize, blocks or a numeric key between
|
|
* 0 and 12.
|
|
*
|
|
* @param string $arg the array key for stats()
|
|
*
|
|
* @return mixed an array on an unspecified key, integer on a passed
|
|
* arg and false at a stats error
|
|
*/
|
|
function getDbFileStats($arg = '')
|
|
{
|
|
$stats = stat($this->dsn['database']);
|
|
if ($stats == false) {
|
|
return false;
|
|
}
|
|
if (is_array($stats)) {
|
|
if (is_numeric($arg)) {
|
|
if (((int)$arg <= 12) & ((int)$arg >= 0)) {
|
|
return false;
|
|
}
|
|
return $stats[$arg ];
|
|
}
|
|
if (array_key_exists(trim($arg), $stats)) {
|
|
return $stats[$arg ];
|
|
}
|
|
}
|
|
return $stats;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ escapeSimple()
|
|
|
|
/**
|
|
* Escapes a string according to the current DBMS's standards
|
|
*
|
|
* In SQLite, this makes things safe for inserts/updates, but may
|
|
* cause problems when performing text comparisons against columns
|
|
* containing binary data. See the
|
|
* {@link http://php.net/sqlite_escape_string PHP manual} for more info.
|
|
*
|
|
* @param string $str the string to be escaped
|
|
*
|
|
* @return string the escaped string
|
|
*
|
|
* @since Method available since Release 1.6.1
|
|
* @see DB_common::escapeSimple()
|
|
*/
|
|
function escapeSimple($str)
|
|
{
|
|
return @sqlite_escape_string($str);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ modifyLimitQuery()
|
|
|
|
/**
|
|
* Adds LIMIT clauses to a query string according to current DBMS standards
|
|
*
|
|
* @param string $query the query to modify
|
|
* @param int $from the row to start to fetching (0 = the first row)
|
|
* @param int $count the numbers of rows to fetch
|
|
* @param mixed $params array, string or numeric data to be used in
|
|
* execution of the statement. Quantity of items
|
|
* passed must match quantity of placeholders in
|
|
* query: meaning 1 placeholder for non-array
|
|
* parameters or 1 placeholder per array element.
|
|
*
|
|
* @return string the query string with LIMIT clauses added
|
|
*
|
|
* @access protected
|
|
*/
|
|
function modifyLimitQuery($query, $from, $count, $params = array())
|
|
{
|
|
return "$query LIMIT $count OFFSET $from";
|
|
}
|
|
|
|
// }}}
|
|
// {{{ modifyQuery()
|
|
|
|
/**
|
|
* Changes a query string for various DBMS specific reasons
|
|
*
|
|
* This little hack lets you know how many rows were deleted
|
|
* when running a "DELETE FROM table" query. Only implemented
|
|
* if the DB_PORTABILITY_DELETE_COUNT portability option is on.
|
|
*
|
|
* @param string $query the query string to modify
|
|
*
|
|
* @return string the modified query string
|
|
*
|
|
* @access protected
|
|
* @see DB_common::setOption()
|
|
*/
|
|
function modifyQuery($query)
|
|
{
|
|
if ($this->options['portability'] & DB_PORTABILITY_DELETE_COUNT) {
|
|
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
|
|
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
|
|
'DELETE FROM \1 WHERE 1=1', $query);
|
|
}
|
|
}
|
|
return $query;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ sqliteRaiseError()
|
|
|
|
/**
|
|
* Produces a DB_Error object regarding the current problem
|
|
*
|
|
* @param int $errno if the error is being manually raised pass a
|
|
* DB_ERROR* constant here. If this isn't passed
|
|
* the error information gathered from the DBMS.
|
|
*
|
|
* @return object the DB_Error object
|
|
*
|
|
* @see DB_common::raiseError(),
|
|
* DB_sqlite::errorNative(), DB_sqlite::errorCode()
|
|
*/
|
|
function sqliteRaiseError($errno = null)
|
|
{
|
|
$native = $this->errorNative();
|
|
if ($errno === null) {
|
|
$errno = $this->errorCode($native);
|
|
}
|
|
|
|
$errorcode = @sqlite_last_error($this->connection);
|
|
$userinfo = "$errorcode ** $this->last_query";
|
|
|
|
return $this->raiseError($errno, null, null, $userinfo, $native);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorNative()
|
|
|
|
/**
|
|
* Gets the DBMS' native error message produced by the last query
|
|
*
|
|
* {@internal This is used to retrieve more meaningfull error messages
|
|
* because sqlite_last_error() does not provide adequate info.}}
|
|
*
|
|
* @return string the DBMS' error message
|
|
*/
|
|
function errorNative()
|
|
{
|
|
return $this->_lasterror;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorCode()
|
|
|
|
/**
|
|
* Determines PEAR::DB error code from the database's text error message
|
|
*
|
|
* @param string $errormsg the error message returned from the database
|
|
*
|
|
* @return integer the DB error number
|
|
*/
|
|
function errorCode($errormsg)
|
|
{
|
|
static $error_regexps;
|
|
|
|
// PHP 5.2+ prepends the function name to $php_errormsg, so we need
|
|
// this hack to work around it, per bug #9599.
|
|
$errormsg = preg_replace('/^sqlite[a-z_]+\(\): /', '', $errormsg);
|
|
|
|
if (!isset($error_regexps)) {
|
|
$error_regexps = array(
|
|
'/^no such table:/' => DB_ERROR_NOSUCHTABLE,
|
|
'/^no such index:/' => DB_ERROR_NOT_FOUND,
|
|
'/^(table|index) .* already exists$/' => DB_ERROR_ALREADY_EXISTS,
|
|
'/PRIMARY KEY must be unique/i' => DB_ERROR_CONSTRAINT,
|
|
'/is not unique/' => DB_ERROR_CONSTRAINT,
|
|
'/columns .* are not unique/i' => DB_ERROR_CONSTRAINT,
|
|
'/uniqueness constraint failed/' => DB_ERROR_CONSTRAINT,
|
|
'/may not be NULL/' => DB_ERROR_CONSTRAINT_NOT_NULL,
|
|
'/^no such column:/' => DB_ERROR_NOSUCHFIELD,
|
|
'/no column named/' => DB_ERROR_NOSUCHFIELD,
|
|
'/column not present in both tables/i' => DB_ERROR_NOSUCHFIELD,
|
|
'/^near ".*": syntax error$/' => DB_ERROR_SYNTAX,
|
|
'/[0-9]+ values for [0-9]+ columns/i' => DB_ERROR_VALUE_COUNT_ON_ROW,
|
|
);
|
|
}
|
|
foreach ($error_regexps as $regexp => $code) {
|
|
if (preg_match($regexp, $errormsg)) {
|
|
return $code;
|
|
}
|
|
}
|
|
// Fall back to DB_ERROR if there was no mapping.
|
|
return DB_ERROR;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ tableInfo()
|
|
|
|
/**
|
|
* Returns information about a table
|
|
*
|
|
* @param string $result a string containing the name of a table
|
|
* @param int $mode a valid tableInfo mode
|
|
*
|
|
* @return array an associative array with the information requested.
|
|
* A DB_Error object on failure.
|
|
*
|
|
* @see DB_common::tableInfo()
|
|
* @since Method available since Release 1.7.0
|
|
*/
|
|
function tableInfo($result, $mode = null)
|
|
{
|
|
if (is_string($result)) {
|
|
/*
|
|
* Probably received a table name.
|
|
* Create a result resource identifier.
|
|
*/
|
|
$id = @sqlite_array_query($this->connection,
|
|
"PRAGMA table_info('$result');",
|
|
SQLITE_ASSOC);
|
|
$got_string = true;
|
|
} else {
|
|
$this->last_query = '';
|
|
return $this->raiseError(DB_ERROR_NOT_CAPABLE, null, null, null,
|
|
'This DBMS can not obtain tableInfo' .
|
|
' from result sets');
|
|
}
|
|
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
|
|
$case_func = 'strtolower';
|
|
} else {
|
|
$case_func = 'strval';
|
|
}
|
|
|
|
$count = count($id);
|
|
$res = array();
|
|
|
|
if ($mode) {
|
|
$res['num_fields'] = $count;
|
|
}
|
|
|
|
for ($i = 0; $i < $count; $i++) {
|
|
if (strpos($id[$i]['type'], '(') !== false) {
|
|
$bits = explode('(', $id[$i]['type']);
|
|
$type = $bits[0];
|
|
$len = rtrim($bits[1],')');
|
|
} else {
|
|
$type = $id[$i]['type'];
|
|
$len = 0;
|
|
}
|
|
|
|
$flags = '';
|
|
if ($id[$i]['pk']) {
|
|
$flags .= 'primary_key ';
|
|
}
|
|
if ($id[$i]['notnull']) {
|
|
$flags .= 'not_null ';
|
|
}
|
|
if ($id[$i]['dflt_value'] !== null) {
|
|
$flags .= 'default_' . rawurlencode($id[$i]['dflt_value']);
|
|
}
|
|
$flags = trim($flags);
|
|
|
|
$res[$i] = array(
|
|
'table' => $case_func($result),
|
|
'name' => $case_func($id[$i]['name']),
|
|
'type' => $type,
|
|
'len' => $len,
|
|
'flags' => $flags,
|
|
);
|
|
|
|
if ($mode & DB_TABLEINFO_ORDER) {
|
|
$res['order'][$res[$i]['name']] = $i;
|
|
}
|
|
if ($mode & DB_TABLEINFO_ORDERTABLE) {
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
|
}
|
|
}
|
|
|
|
return $res;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getSpecialQuery()
|
|
|
|
/**
|
|
* Obtains the query string needed for listing a given type of objects
|
|
*
|
|
* @param string $type the kind of objects you want to retrieve
|
|
* @param array $args SQLITE DRIVER ONLY: a private array of arguments
|
|
* used by the getSpecialQuery(). Do not use
|
|
* this directly.
|
|
*
|
|
* @return string the SQL query string or null if the driver doesn't
|
|
* support the object type requested
|
|
*
|
|
* @access protected
|
|
* @see DB_common::getListOf()
|
|
*/
|
|
function getSpecialQuery($type, $args = array())
|
|
{
|
|
if (!is_array($args)) {
|
|
return $this->raiseError('no key specified', null, null, null,
|
|
'Argument has to be an array.');
|
|
}
|
|
|
|
switch ($type) {
|
|
case 'master':
|
|
return 'SELECT * FROM sqlite_master;';
|
|
case 'tables':
|
|
return "SELECT name FROM sqlite_master WHERE type='table' "
|
|
. 'UNION ALL SELECT name FROM sqlite_temp_master '
|
|
. "WHERE type='table' ORDER BY name;";
|
|
case 'schema':
|
|
return 'SELECT sql FROM (SELECT * FROM sqlite_master '
|
|
. 'UNION ALL SELECT * FROM sqlite_temp_master) '
|
|
. "WHERE type!='meta' "
|
|
. 'ORDER BY tbl_name, type DESC, name;';
|
|
case 'schemax':
|
|
case 'schema_x':
|
|
/*
|
|
* Use like:
|
|
* $res = $db->query($db->getSpecialQuery('schema_x',
|
|
* array('table' => 'table3')));
|
|
*/
|
|
return 'SELECT sql FROM (SELECT * FROM sqlite_master '
|
|
. 'UNION ALL SELECT * FROM sqlite_temp_master) '
|
|
. "WHERE tbl_name LIKE '{$args['table']}' "
|
|
. "AND type!='meta' "
|
|
. 'ORDER BY type DESC, name;';
|
|
case 'alter':
|
|
/*
|
|
* SQLite does not support ALTER TABLE; this is a helper query
|
|
* to handle this. 'table' represents the table name, 'rows'
|
|
* the news rows to create, 'save' the row(s) to keep _with_
|
|
* the data.
|
|
*
|
|
* Use like:
|
|
* $args = array(
|
|
* 'table' => $table,
|
|
* 'rows' => "id INTEGER PRIMARY KEY, firstname TEXT, surname TEXT, datetime TEXT",
|
|
* 'save' => "NULL, titel, content, datetime"
|
|
* );
|
|
* $res = $db->query( $db->getSpecialQuery('alter', $args));
|
|
*/
|
|
$rows = strtr($args['rows'], $this->keywords);
|
|
|
|
$q = array(
|
|
'BEGIN TRANSACTION',
|
|
"CREATE TEMPORARY TABLE {$args['table']}_backup ({$args['rows']})",
|
|
"INSERT INTO {$args['table']}_backup SELECT {$args['save']} FROM {$args['table']}",
|
|
"DROP TABLE {$args['table']}",
|
|
"CREATE TABLE {$args['table']} ({$args['rows']})",
|
|
"INSERT INTO {$args['table']} SELECT {$rows} FROM {$args['table']}_backup",
|
|
"DROP TABLE {$args['table']}_backup",
|
|
'COMMIT',
|
|
);
|
|
|
|
/*
|
|
* This is a dirty hack, since the above query will not get
|
|
* executed with a single query call so here the query method
|
|
* will be called directly and return a select instead.
|
|
*/
|
|
foreach ($q as $query) {
|
|
$this->query($query);
|
|
}
|
|
return "SELECT * FROM {$args['table']};";
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
*/
|
|
|
|
?>
|