<?php   
    /*
    Copyright (C) 2001-2004 ZZOSS GbR, http://www.zzoss.com

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    */
    
    /**
    @version $Id: form.php,v 1.9 2004/04/04 15:53:42 ordnas Exp $
    @copyright Copyright &copy; 2001-2004 ZZ/OSS GbR, http://www.zzoss.com
    @license http://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License
    */

	// set parameters
	define('ZI_LOCATION_CANCEL', 'cancel.php');

	// redirect if we cancel
	if(isset($_REQUEST['ZI_BUTTON_CANCEL']) || isset($_REQUEST['ZI_BUTTON_CANCEL_x'])){
        if(!isset($_REQUEST['ZI_LOCATION_CANCEL'])){
            $_REQUEST['ZI_LOCATION_CANCEL'] = $chdir.ZI_LOCATION_CANCEL;
        }
	  	header('Location: '.$_REQUEST['ZI_LOCATION_CANCEL']);
		exit;
	}

	// redirect to previous page
	if(isset($_REQUEST['ZI_BUTTON_BACK']) || isset($_REQUEST['ZI_BUTTON_BACK_x'])){
	  	header('Location: '.$_REQUEST['ZI_LOCATION_BACK']);
		exit;
	}

	// did we submit valid data?
	if(
        isset($_REQUEST['ZI_BUTTON_NEXT']) || isset($_REQUEST['ZI_BUTTON_NEXT_x']) ||
        isset($_REQUEST['ZI_BUTTON_OK']) || isset($_REQUEST['ZI_BUTTON_OK_x'])){
	  	//echo 'VALIDATE';
	  	// iterate values
		if(isset($_REQUEST['ZI_VALUES']) && isset($_REQUEST['ZI_VALIDATIONS']) && is_array($_REQUEST['ZI_VALIDATIONS']) && count($_REQUEST['ZI_VALIDATIONS'])){
		  	$zi_errors = null;
		  	foreach($_REQUEST['ZI_VALIDATIONS'] as $var_name => $validation_type){
				// what should we check?
				$switch = $validation_type;
				switch($switch){
				  	case 'not empty':
					if(strlen($_REQUEST['ZI_VALUES'][$var_name]) < 1){
					  	$zi_errors[$var_name] = 'must not be empty';
					}
					break;
					case 'email':
					   if (!empty($_REQUEST['ZI_VALUES'][$var_name])){ 
							if (!eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+([a-z]{2,3}$)", trim($_REQUEST['ZI_VALUES'][$var_name]), $check)) { 
								$zi_errors[$var_name] = 'wrong email syntax'; 
							} 
					   } else {
						   $zi_errors[$var_name] = 'no email provided';
					   }

					break;
				}
			}
		}
		// check for custom validation
		if(function_exists('zi_validate')){
		  	$custom_result = call_user_func('zi_validate');
			if(is_array($custom_result) && count($custom_result)) {
				if(!is_array($zi_errors)) {
					$zi_errors = array();
				}
				$zi_errors = array_merge($zi_errors, $custom_result);
			}
		}
	}
    //print_r($_REQUEST);
	if(
        (
            isset($_REQUEST['ZI_BUTTON_NEXT']) || isset($_REQUEST['ZI_BUTTON_NEXT_x']) ||
            isset($_REQUEST['ZI_BUTTON_OK']) || isset($_REQUEST['ZI_BUTTON_OK_x'])
        ) &&
        !isset($zi_errors)){
	  	// process data
		if(function_exists('zi_process')){
		  	call_user_func('zi_process', array($_REQUEST));
		}
		// go on
        if(isset($_REQUEST['ZI_LOCATION_NEXT']) && strlen($_REQUEST['ZI_LOCATION_NEXT'])){
            $redirect = $_REQUEST['ZI_LOCATION_NEXT'];
            header('Location: '.$redirect);
            exit;
        } elseif(isset($_REQUEST['ZI_LOCATION_OK']) && strlen($_REQUEST['ZI_LOCATION_OK'])) {
            $redirect = $_REQUEST['ZI_LOCATION_OK'];
            header('Location: '.$redirect);
            exit;
        }
	}

	// assign default values
	if(!(isset($_REQUEST['ZI_BUTTON_NEXT']) || isset($_REQUEST['ZI_BUTTON_NEXT_x']))){
		if(function_exists('zi_default') && ($def = call_user_func('zi_default'))){
		  	$_REQUEST = $def;
		}
	}
    
    // compose the query string
    function zi_form_querystr()
    {
        $fields = array('id', 'distribution', 'application', 'package', 'mode', 'update_old', 'type', 'dev', 'profile', 'nav', 'widget_type');
        $querystr = '';
        foreach($fields as $field){
            if(isset($_REQUEST[$field])){
                $querystr .= $field.'='.rawurlencode($_REQUEST[$field]).'&';
            }
        }
        
        return '?'.$querystr;
    }
    
    function zi_form_hidden_fields($fields)
    {
        if(is_array($fields) && count($fields)){
            foreach($fields as $field){
                if(isset($_REQUEST[$field])){
                    ?>
                    <input type="hidden" name="<?php echo $field; ?>" value="<?php echo $_REQUEST[$field]; ?>">
                    <?php
                }
            }
        }
    }
?>