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modifier.date_format.php

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<?php
/**
 * Smarty plugin
 *
 * @package Smarty
 * @subpackage PluginsModifier
 */


/**
 * Smarty date_format modifier plugin
 *
 * Type:     modifier<br>
 * Name:     date_format<br>
 * Purpose:  format datestamps via strftime<br>
 * Input:<br>
 *          - string: input date string
 *          - format: strftime format for output
 *          - default_date: default date if $string is empty
 *
 * @link http://www.smarty.net/manual/en/language.modifier.date.format.php date_format (Smarty online manual)
 * @author Monte Ohrt <monte at ohrt dot com>
 * @param string $string       input date string
 * @param string $format       strftime format for output
 * @param string $default_date default date if $string is empty
 * @param string $formatter    either 'strftime' or 'auto'
 * @return string |void
 * @uses smarty_make_timestamp()
 */

function smarty_modifier_date_format($string, $format=null, $default_date='', $formatter='auto')
{
    if ($format === null) {
        $format = Plugin_Smarty_Smarty::$_DATE_FORMAT;
    }
    /**
    * Include the {@link shared.make_timestamp.php} plugin
    */

    require_once(SMARTY_PLUGINS_DIR . 'shared.make_timestamp.php');
    if ($string != '' && $string != '0000-00-00' && $string != '0000-00-00 00:00:00') {
        $timestamp = smarty_make_timestamp($string);
    } elseif ($default_date != '') {
        $timestamp = smarty_make_timestamp($default_date);
    } else {
        return;
    }
    if ($formatter=='strftime'||($formatter=='auto'&&strpos($format,'%')!==false)) {
        if (DS == '\\') {
            $_win_from = array('%D', '%h', '%n', '%r', '%R', '%t', '%T');
            $_win_to = array('%m/%d/%y', '%b', "\n", '%I:%M:%S %p', '%H:%M', "\t", '%H:%M:%S');
            if (strpos($format, '%e') !== false) {
                $_win_from[] = '%e';
                $_win_to[] = sprintf('%\' 2d', date('j', $timestamp));
            }
            if (strpos($format, '%l') !== false) {
                $_win_from[] = '%l';
                $_win_to[] = sprintf('%\' 2d', date('h', $timestamp));
            }
            $format = str_replace($_win_from, $_win_to, $format);
        }

        return strftime($format, $timestamp);
    } else {
        return date($format, $timestamp);
    }
}