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<?php
require_once CORE_PATH . 'extensions/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();
                } else {
                        $filters = array($filter);
                }
        
        return self::_apply_filters($s, $filters, $options);
    }
    protected static function _apply_filters($s, $filters, $options)
    {
       if (is_array($s)) {
            foreach ($s as $key => $value) {
                if (is_array($value) || is_object($value)) {
                    return self::_apply_filters($s[$key], $filters, $options);
                } elseif (is_string($value)) {
                    foreach ($filters as $f) {
                                                $filter = Inflector::camelcase($f).'Filter';
                                                if(!class_exists($filter)) {
                                                        self::_load_filter($f);
                                                }
                        $s[$key] = call_user_func(array($filter , 'execute'), $value, $options);
                    }
                }
            }
        } elseif (is_object($s)) {
            foreach (get_object_vars($s) as $attr => $value) {
                if (is_array($value) || is_object($value)) {
                    return self::_apply_filters($s->$attr, $filters, $options);
                } elseif (is_string($value)) {
                    foreach ($filters as $f) {
                                                $filter = Inflector::camelcase($f).'Filter';
                                                if(!class_exists($filter)) {
                                                        self::_load_filter($f);
                                                }
                        $s->$attr = call_user_func(array($filter, 'execute'), $value, $options);
                    }
                }
            }
        } elseif (is_string($s)) {
            foreach ($filters as $f) {
                                $filter = Inflector::camelcase($f).'Filter';
                                if(!class_exists($filter)) {
                                        self::_load_filter($f);
                                }
                $s = call_user_func(array($filter, 'execute'), $s, $options);
            }
        }
        return $s;
    }
        protected static function _load_filter($filter)
        {
                $file = CORE_PATH . "extensions/filter/base_filters/$f_filter.php";
                if(!file_exists($file)) {
                        $file = APP_PATH . "filters/$f_filter.php";
                        if(!file_exists($file)) {
                                throw new KumbiaException("Filtro $f no encontrado");
                        }
                }
                include $file;
        }
}

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