filter.php

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<?php
require_once CORE_PATH . 'libs/filter/filter_interface.php';

class Filter
{

    public static function get($s, $filter, $options = array())
    {
        if (is_string($options)) {
            $filters = func_get_args();
            unset($filters[0]);

            $options = array();
            foreach ($filters as $f) {
                $filter_class = Util::camelcase($f) . 'Filter';
                if (!class_exists($filter_class, false)) {
                    self::_load_filter($f);
                }

                $s = call_user_func(array($filter_class, 'execute'), $s, $options);
            }
        } else {
            $filter_class = Util::camelcase($filter) . 'Filter';
            if (!class_exists($filter_class, false)) {
                self::_load_filter($filter);
            }
            $s = call_user_func(array($filter_class, 'execute'), $s, $options);
        }

        return $s;
    }

    public static function get_array($array, $filter, $options = array())
    {
        $args = func_get_args();

        foreach ($array as $k => $v) {
            $args[0] = $v;
            $array[$k] = call_user_func_array(array('self', 'get'), $args);
        }

        return $array;
    }

    public static function data(array $data, array $fields, $filterAll = NULL)
    {
        $filtered = array(); //datos filtrados a devolver.
        foreach ($fields as $index => $filters) {
            if (is_numeric($index) && array_key_exists($filters, $data)) {
                //si el indice es numerico, no queremos usar filtro para ese campo
                $filtered[$filters] = $data[$filters];
                continue;
            } elseif (array_key_exists($index, $data)) {//verificamos de nuevo la existencia del indice en $data
                $filters = explode('|',$filters);//convertimos el filtro en arreglo
                array_unshift($filters, $data[$index]);
                $filtered[$index] = call_user_func_array(array('self', 'get'), $filters);
                //$filtered[$index] = self::get($data[$index], $filters); //por ahora sin opciones adicionales.
            }
        }
        if ($filterAll) {
            $filterAll = explode('|',$filterAll);
            array_unshift($filterAll, $filtered);
            return call_user_func_array(array('self', 'get_array'), $filterAll);
        } else {
            return $filtered;
        }
    }

    public static function get_object($object, $filter, $options = array())
    {
        $args = func_get_args();

        foreach ($object as $k => $v) {
            $args[0] = $v;
            $object->$k = call_user_func_array(array('self', 'get'), $args);
        }

        return $object;
    }

    protected static function _load_filter($filter)
    {
        $file = APP_PATH . "extensions/filters/{$filter}_filter.php";
        if (!is_file($file)) {
            $file = CORE_PATH . "libs/filter/base_filter/{$filter}_filter.php";
            if (!is_file($file)) {
                throw new KumbiaException("Filtro $filter no encontrado");
            }
        }

        include $file;
    }

}