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-<?php
-
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-
-/**
- * The PEAR DB driver for PHP's sqlite extension
- * for interacting with SQLite databases
- *
- * PHP versions 4 and 5
- *
- * LICENSE: This source file is subject to version 3.0 of the PHP license
- * that is available through the world-wide-web at the following URI:
- * http://www.php.net/license/3_0.txt. If you did not receive a copy of
- * the PHP License and are unable to obtain it through the web, please
- * send a note to license@php.net so we can mail you a copy immediately.
- *
- * @category Database
- * @package DB
- * @author Urs Gehrig <urs@circle.ch>
- * @author Mika Tuupola <tuupola@appelsiini.net>
- * @author Daniel Convissor <danielc@php.net>
- * @copyright 1997-2007 The PHP Group
- * @license http://www.php.net/license/3_0.txt PHP License 3.0 3.0
- * @version CVS: $Id$
- * @link http://pear.php.net/package/DB
- */
-
-/**
- * Obtain the DB_common class so it can be extended from
- */
-require_once 'DB/common.php';
-
-/**
- * The methods PEAR DB uses to interact with PHP's sqlite extension
- * for interacting with SQLite databases
- *
- * These methods overload the ones declared in DB_common.
- *
- * NOTICE: This driver needs PHP's track_errors ini setting to be on.
- * It is automatically turned on when connecting to the database.
- * Make sure your scripts don't turn it off.
- *
- * @category Database
- * @package DB
- * @author Urs Gehrig <urs@circle.ch>
- * @author Mika Tuupola <tuupola@appelsiini.net>
- * @author Daniel Convissor <danielc@php.net>
- * @copyright 1997-2007 The PHP Group
- * @license http://www.php.net/license/3_0.txt PHP License 3.0 3.0
- * @version Release: 1.7.13
- * @link http://pear.php.net/package/DB
- */
-class DB_sqlite extends DB_common
-{
- // {{{ properties
-
- /**
- * The DB driver type (mysql, oci8, odbc, etc.)
- * @var string
- */
- var $phptype = 'sqlite';
-
- /**
- * The database syntax variant to be used (db2, access, etc.), if any
- * @var string
- */
- var $dbsyntax = 'sqlite';
-
- /**
- * The capabilities of this DB implementation
- *
- * The 'new_link' element contains the PHP version that first provided
- * new_link support for this DBMS. Contains false if it's unsupported.
- *
- * Meaning of the 'limit' element:
- * + 'emulate' = emulate with fetch row by number
- * + 'alter' = alter the query
- * + false = skip rows
- *
- * @var array
- */
- var $features = array(
- 'limit' => 'alter',
- 'new_link' => false,
- 'numrows' => true,
- 'pconnect' => true,
- 'prepare' => false,
- 'ssl' => false,
- 'transactions' => false,
- );
-
- /**
- * A mapping of native error codes to DB error codes
- *
- * {@internal Error codes according to sqlite_exec. See the online
- * manual at http://sqlite.org/c_interface.html for info.
- * This error handling based on sqlite_exec is not yet implemented.}}
- *
- * @var array
- */
- var $errorcode_map = array(
- );
-
- /**
- * The raw database connection created by PHP
- * @var resource
- */
- var $connection;
-
- /**
- * The DSN information for connecting to a database
- * @var array
- */
- var $dsn = array();
-
-
- /**
- * SQLite data types
- *
- * @link http://www.sqlite.org/datatypes.html
- *
- * @var array
- */
- var $keywords = array (
- 'BLOB' => '',
- 'BOOLEAN' => '',
- 'CHARACTER' => '',
- 'CLOB' => '',
- 'FLOAT' => '',
- 'INTEGER' => '',
- 'KEY' => '',
- 'NATIONAL' => '',
- 'NUMERIC' => '',
- 'NVARCHAR' => '',
- 'PRIMARY' => '',
- 'TEXT' => '',
- 'TIMESTAMP' => '',
- 'UNIQUE' => '',
- 'VARCHAR' => '',
- 'VARYING' => '',
- );
-
- /**
- * The most recent error message from $php_errormsg
- * @var string
- * @access private
- */
- var $_lasterror = '';
-
-
- // }}}
- // {{{ constructor
-
- /**
- * This constructor calls <kbd>$this->DB_common()</kbd>
- *
- * @return void
- */
- function DB_sqlite()
- {
- $this->DB_common();
- }
-
- // }}}
- // {{{ connect()
-
- /**
- * Connect to the database server, log in and open the database
- *
- * Don't call this method directly. Use DB::connect() instead.
- *
- * PEAR DB's sqlite driver supports the following extra DSN options:
- * + mode The permissions for the database file, in four digit
- * chmod octal format (eg "0600").
- *
- * Example of connecting to a database in read-only mode:
- * <code>
- * require_once 'DB.php';
- *
- * $dsn = 'sqlite:///path/and/name/of/db/file?mode=0400';
- * $options = array(
- * 'portability' => DB_PORTABILITY_ALL,
- * );
- *
- * $db = DB::connect($dsn, $options);
- * if (PEAR::isError($db)) {
- * die($db->getMessage());
- * }
- * </code>
- *
- * @param array $dsn the data source name
- * @param bool $persistent should the connection be persistent?
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- */
- function connect($dsn, $persistent = false)
- {
- if (!PEAR::loadExtension('sqlite')) {
- return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
- }
-
- $this->dsn = $dsn;
- if ($dsn['dbsyntax']) {
- $this->dbsyntax = $dsn['dbsyntax'];
- }
-
- if (!$dsn['database']) {
- return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION);
- }
-
- if ($dsn['database'] !== ':memory:') {
- if (!file_exists($dsn['database'])) {
- if (!touch($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
- }
- if (!isset($dsn['mode']) ||
- !is_numeric($dsn['mode']))
- {
- $mode = 0644;
- } else {
- $mode = octdec($dsn['mode']);
- }
- if (!chmod($dsn['database'], $mode)) {
- return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
- }
- if (!file_exists($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
- }
- }
- if (!is_file($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_INVALID);
- }
- if (!is_readable($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION);
- }
- }
-
- $connect_function = $persistent ? 'sqlite_popen' : 'sqlite_open';
-
- // track_errors must remain on for simpleQuery()
- @ini_set('track_errors', 1);
- $php_errormsg = '';
-
- if (!$this->connection = @$connect_function($dsn['database'])) {
- return $this->raiseError(DB_ERROR_NODBSELECTED,
- null, null, null,
- $php_errormsg);
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ disconnect()
-
- /**
- * Disconnects from the database server
- *
- * @return bool TRUE on success, FALSE on failure
- */
- function disconnect()
- {
- $ret = @sqlite_close($this->connection);
- $this->connection = null;
- return $ret;
- }
-
- // }}}
- // {{{ simpleQuery()
-
- /**
- * Sends a query to the database server
- *
- * NOTICE: This method needs PHP's track_errors ini setting to be on.
- * It is automatically turned on when connecting to the database.
- * Make sure your scripts don't turn it off.
- *
- * @param string the SQL query string
- *
- * @return mixed + a PHP result resrouce for successful SELECT queries
- * + the DB_OK constant for other successful queries
- * + a DB_Error object on failure
- */
- function simpleQuery($query)
- {
- $ismanip = $this->_checkManip($query);
- $this->last_query = $query;
- $query = $this->modifyQuery($query);
-
- $php_errormsg = '';
-
- $result = @sqlite_query($query, $this->connection);
- $this->_lasterror = $php_errormsg ? $php_errormsg : '';
-
- $this->result = $result;
- if (!$this->result) {
- return $this->sqliteRaiseError(null);
- }
-
- // sqlite_query() seems to allways return a resource
- // so cant use that. Using $ismanip instead
- if (!$ismanip) {
- $numRows = $this->numRows($result);
- if (is_object($numRows)) {
- // we've got PEAR_Error
- return $numRows;
- }
- return $result;
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ nextResult()
-
- /**
- * Move the internal sqlite result pointer to the next available result
- *
- * @param resource $result the valid sqlite result resource
- *
- * @return bool true if a result is available otherwise return false
- */
- function nextResult($result)
- {
- return false;
- }
-
- // }}}
- // {{{ fetchInto()
-
- /**
- * Places a row from the result set into the given array
- *
- * Formating of the array and the data therein are configurable.
- * See DB_result::fetchInto() for more information.
- *
- * This method is not meant to be called directly. Use
- * DB_result::fetchInto() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result the query result resource
- * @param array $arr the referenced array to put the data in
- * @param int $fetchmode how the resulting array should be indexed
- * @param int $rownum the row number to fetch (0 = first row)
- *
- * @return mixed DB_OK on success, NULL when the end of a result set is
- * reached or on failure
- *
- * @see DB_result::fetchInto()
- */
- function fetchInto($result, &$arr, $fetchmode, $rownum = null)
- {
- if ($rownum !== null) {
- if (!@sqlite_seek($this->result, $rownum)) {
- return null;
- }
- }
- if ($fetchmode & DB_FETCHMODE_ASSOC) {
- $arr = @sqlite_fetch_array($result, SQLITE_ASSOC);
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
- $arr = array_change_key_case($arr, CASE_LOWER);
- }
-
- /* Remove extraneous " characters from the fields in the result.
- * Fixes bug #11716. */
- if (is_array($arr) && count($arr) > 0) {
- $strippedArr = array();
- foreach ($arr as $field => $value) {
- $strippedArr[trim($field, '"')] = $value;
- }
- $arr = $strippedArr;
- }
- } else {
- $arr = @sqlite_fetch_array($result, SQLITE_NUM);
- }
- if (!$arr) {
- return null;
- }
- if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
- /*
- * Even though this DBMS already trims output, we do this because
- * a field might have intentional whitespace at the end that
- * gets removed by DB_PORTABILITY_RTRIM under another driver.
- */
- $this->_rtrimArrayValues($arr);
- }
- if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
- $this->_convertNullArrayValuesToEmpty($arr);
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ freeResult()
-
- /**
- * Deletes the result set and frees the memory occupied by the result set
- *
- * This method is not meant to be called directly. Use
- * DB_result::free() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result PHP's query result resource
- *
- * @return bool TRUE on success, FALSE if $result is invalid
- *
- * @see DB_result::free()
- */
- function freeResult(&$result)
- {
- // XXX No native free?
- if (!is_resource($result)) {
- return false;
- }
- $result = null;
- return true;
- }
-
- // }}}
- // {{{ numCols()
-
- /**
- * Gets the number of columns in a result set
- *
- * This method is not meant to be called directly. Use
- * DB_result::numCols() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result PHP's query result resource
- *
- * @return int the number of columns. A DB_Error object on failure.
- *
- * @see DB_result::numCols()
- */
- function numCols($result)
- {
- $cols = @sqlite_num_fields($result);
- if (!$cols) {
- return $this->sqliteRaiseError();
- }
- return $cols;
- }
-
- // }}}
- // {{{ numRows()
-
- /**
- * Gets the number of rows in a result set
- *
- * This method is not meant to be called directly. Use
- * DB_result::numRows() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result PHP's query result resource
- *
- * @return int the number of rows. A DB_Error object on failure.
- *
- * @see DB_result::numRows()
- */
- function numRows($result)
- {
- $rows = @sqlite_num_rows($result);
- if ($rows === null) {
- return $this->sqliteRaiseError();
- }
- return $rows;
- }
-
- // }}}
- // {{{ affected()
-
- /**
- * Determines the number of rows affected by a data maniuplation query
- *
- * 0 is returned for queries that don't manipulate data.
- *
- * @return int the number of rows. A DB_Error object on failure.
- */
- function affectedRows()
- {
- return @sqlite_changes($this->connection);
- }
-
- // }}}
- // {{{ dropSequence()
-
- /**
- * Deletes a sequence
- *
- * @param string $seq_name name of the sequence to be deleted
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- *
- * @see DB_common::dropSequence(), DB_common::getSequenceName(),
- * DB_sqlite::nextID(), DB_sqlite::createSequence()
- */
- function dropSequence($seq_name)
- {
- return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
- }
-
- /**
- * 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
- DELETE FROM $seqname WHERE id<LAST_INSERT_ROWID();
- END ";
- $result = $this->query($query);
- if (DB::isError($result)) {
- return($result);
- }
- }
-
- // }}}
- // {{{ 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);
-
- 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,
- '/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:
- */
-
-?>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 12:10:52 +0000