Added PEAR:DB support plus database replication support

1 files changed, 942 insertions, 0 deletions

diff --git a/program/lib/DB/sqlite.php b/program/lib/DB/sqlite.php
new file mode 100644
index 000000000..42f599e5d
--- /dev/null
+++ b/program/lib/DB/sqlite.php
@@ -0,0 +1,942 @@
+<?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  1997-2005 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  1997-2005 The PHP Group
+ * @license    http://www.php.net/license/3_0.txt  PHP License 3.0 3.0
+ * @version    Release: @package_version@
+ * @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']) {
+            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);
+            }
+        } else {
+            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)
+    {
+        $ismanip = DB::isManip($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);
+            }
+        } 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 $error_regexps;
+        if (!isset($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:
+ */
+
+?>