<?php
/**
 * patTemplate modfifier Number
 *
 * @package wombat
 * @subpackage patTemplate
 * @author gERD Schaufelberger <gerd@php-tools.net>
 */

/**
 * patTemplate modfifier Number
 *
 * Formats dates and times according to a format string.
 *
 * Possible attributes are:
 * - decimals (int)
 * - point - use locale settings by default
 * - separator - use locale settings by default
 * - zeroreplace - replace tailing 0
 *
 * See the PHP documentation for number_format() for
 * more information.
 */
class patTemplate_Modifier_Number extends patTemplate_Modifier
{
    private $defaults = array(
                        'decimals'      => 2,
                        'point'         => '__LOCALE__',
                        'separator'     => '__LOCALE__',
                        'zeroreplace'   => '__NONE__'
                    );
   /**
    * Modify the value
    *
    * @param string value
    * @return string modified value
    */
    public function modify($value, $params = array())
    {
        // normalize
        $tmp    =   str_replace(',', '.', $value);
        if (!is_numeric($tmp)) {
            return $value;
        }
        $tmp    =   floatval($tmp);
        $params =   array_merge($this->defaults, $params);

        $locale =   localeconv();
        if ('__LOCALE__' == strtoupper($params['point'])) {
            $params['point']        =   $locale['decimal_point'];
        }
        if ('__LOCALE__' == strtoupper($params['separator'])) {
            $params['separator']    =   $locale['thousands_sep'];
        }

        $suffix =   '';
        if ('__NONE__' != strtoupper($params['zeroreplace'])) {
            if (!strstr(strval($tmp), $params['point'])) {
                $params['decimals'] =   0;
                $suffix =   $params['point'] . $params['zeroreplace'];
            }
        }

        $tmp    =   number_format($tmp, $params['decimals'], $params['point'], $params['separator']);
        return $tmp . $suffix;
    }
}