<?php
/* $Id$ */
// vim: expandtab sw=4 ts=4 sts=4:

if (!defined('PMA_TRANSFORMATION_TEXT_PLAIN__DATEFORMAT')){
    define('PMA_TRANSFORMATION_TEXT_PLAIN__DATEFORMAT', 1);

    function PMA_transformation_text_plain__dateformat($buffer, $options = array(), $meta = '') {
        // possibly use a global transform and feed it with special options:
        // include('./libraries/transformations/global.inc.php');

        // further operations on $buffer using the $options[] array.
        if (!isset($options[0]) || $options[0] == '') {
            $options[0] = 0;
        }

        if (!isset($options[1]) || $options[1] == '') {
            $options[1] = $GLOBALS['datefmt'];
        }

        $timestamp = -1;

        // Detect TIMESTAMP(6 | 8 | 10 | 12 | 14), (2 | 4) not supported here.
        if (preg_match('/^(\d{2}){3,7}$/', $buffer)) {

            if (strlen($buffer) == 14 || strlen($buffer) == 8) {
                $offset = 4;
            } else {
                $offset = 2;
            }

            $d = array();
            $d['year']   = substr($buffer, 0, $offset);
            $d['month']  = substr($buffer, $offset, 2);
            $d['day']    = substr($buffer, $offset + 2, 2);
            $d['hour']   = substr($buffer, $offset + 4, 2);
            $d['minute'] = substr($buffer, $offset + 6, 2);
            $d['second'] = substr($buffer, $offset + 8, 2);

            if (checkdate($d['month'], $d['day'], $d['year'])) {
                $timestamp = mktime($d['hour'], $d['minute'], $d['second'], $d['month'], $d['day'], $d['year']);
            }
        // If all fails, assume one of the dozens of valid strtime() syntaxes (http://www.gnu.org/manual/tar-1.12/html_chapter/tar_7.html)
        } else {
            $timestamp = strtotime($buffer);
        }

        // If all above failed, maybe it's a Unix timestamp already?
        if ($timestamp < 0 && preg_match('/^[1-9]\d{1,9}$/', $buffer)) {
            $timestamp = $buffer;
        }

        // Reformat a valid timestamp
        if ($timestamp >= 0) {
            $timestamp -= $options[0] * 60 * 60;
            $buffer = PMA_localisedDate($timestamp, $options[1]);
        }

        return $buffer;
    }
}
?>