object.php

讲的是网络编程

                break 1;
            case 'p':
            case 'preview':
                $ts =& MyTextSanitizer::getInstance();
                $html = !empty($this->vars['dohtml']['value']) ? 1 : 0;
                $xcode = (!isset($this->vars['doxcode']['value']) || $this->vars['doxcode']['value'] == 1) ? 1 : 0;
                $smiley = (!isset($this->vars['dosmiley']['value']) || $this->vars['dosmiley']['value'] == 1) ? 1 : 0;
                $image = (!isset($this->vars['doimage']['value']) || $this->vars['doimage']['value'] == 1) ? 1 : 0;
                $br = (!isset($this->vars['dobr']['value']) || $this->vars['dobr']['value'] == 1) ? 1 : 0;
                return $ts->previewTarea($ret, $html, $smiley, $xcode, $image, $br);
                break 1;
            case 'f':
            case 'formpreview':
                $ts =& MyTextSanitizer::getInstance();
                return htmlspecialchars($ts->stripSlashesGPC($ret), ENT_QUOTES);
                break 1;
            case 'n':
            case 'none':
            default:
                break 1;
            }
            break;
        case XOBJ_DTYPE_ARRAY:
            $ret = unserialize($ret);
            break;
        case XOBJ_DTYPE_SOURCE:
            switch (strtolower($format)) {
            case 's':
            case 'show':
                break 1;
            case 'e':
            case 'edit':
                return htmlspecialchars($ret, ENT_QUOTES);
                break 1;
            case 'p':
            case 'preview':
                $ts =& MyTextSanitizer::getInstance();
                return $ts->stripSlashesGPC($ret);
                break 1;
            case 'f':
            case 'formpreview':
                $ts =& MyTextSanitizer::getInstance();
                return htmlspecialchars($ts->stripSlashesGPC($ret), ENT_QUOTES);
                break 1;
            case 'n':
            case 'none':
            default:
                break 1;
            }
            break;
        default:
            if ($this->vars[$key]['options'] != '' && $ret != '') {
                switch (strtolower($format)) {
                case 's':
                case 'show':
					$selected = explode('|', $ret);
                    $options = explode('|', $this->vars[$key]['options']);
                    $i = 1;
                    $ret = array();
                    foreach ($options as $op) {
                        if (in_array($i, $selected)) {
                            $ret[] = $op;
                        }
                        $i++;
                    }
                    return implode(', ', $ret);
                case 'e':
                case 'edit':
                    $ret = explode('|', $ret);
                    break 1;
                default:
                    break 1;
                }

            }
            break;
        }
        return $ret;
    }

    /**
     * clean values of all variables of the object for storage. 
     * also add slashes whereever needed
     * 
     * @return bool true if successful
     * @access public
     */
    function cleanVars()
    {
        $ts =& MyTextSanitizer::getInstance();
        $existing_errors = $this->getErrors();
        $this->_errors = array();
        foreach ($this->vars as $k => $v) {
			$cleanv = $v['value'];
            if (!$v['changed']) {
            } else {
                $cleanv = is_string($cleanv) ? trim($cleanv) : $cleanv;
                switch ($v['data_type']) {
                case XOBJ_DTYPE_TXTBOX:
                    if ($v['required'] && $cleanv != '0' && $cleanv == '') {
                        $this->setErrors( sprintf( _XOBJ_ERR_REQUIRED, $k ) );
                        continue;
                    }
                    if (isset($v['maxlength']) && strlen($cleanv) > intval($v['maxlength'])) {
                        $this->setErrors( sprintf( _XOBJ_ERR_SHORTERTHAN, $k, intval( $v['maxlength'] ) ) );
                        continue;
                    }
                    if (!$v['not_gpc']) {
                        $cleanv = $ts->stripSlashesGPC($ts->censorString($cleanv));
                    } else {
                        $cleanv = $ts->censorString($cleanv);
                    }
                    break;
                case XOBJ_DTYPE_TXTAREA:
                    if ($v['required'] && $cleanv != '0' && $cleanv == '') {
                        $this->setErrors( sprintf( _XOBJ_ERR_REQUIRED, $k ) );
                        continue;
                    }
                    if (!$v['not_gpc']) {
                        $cleanv = $ts->stripSlashesGPC($ts->censorString($cleanv));
                    } else {
                        $cleanv = $ts->censorString($cleanv);
                    }
                    break;
                case XOBJ_DTYPE_SOURCE:
                    if (!$v['not_gpc']) {
                        $cleanv = $ts->stripSlashesGPC($cleanv);
                    } else {
                        $cleanv = $cleanv;
                    }
                    break;
                case XOBJ_DTYPE_INT:
                    $cleanv = intval($cleanv);
                    break;
                case XOBJ_DTYPE_EMAIL:
                    if ($v['required'] && $cleanv == '') {
                        $this->setErrors( sprintf( _XOBJ_ERR_REQUIRED, $k ) );
                        continue;
                    }
                    if ($cleanv != '' && !preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+([\.][a-z0-9-]+)+$/i",$cleanv)) {
                        $this->setErrors("Invalid Email");
                        continue;
                    }
                    if (!$v['not_gpc']) {
                        $cleanv = $ts->stripSlashesGPC($cleanv);
                    }
                    break;
                case XOBJ_DTYPE_URL:
                    if ($v['required'] && $cleanv == '') {
                        $this->setErrors( sprintf( _XOBJ_ERR_REQUIRED, $k ) );
                        continue;
                    }
                    if ($cleanv != '' && !preg_match("/^http[s]*:\/\//i", $cleanv)) {
                        $cleanv = 'http://' . $cleanv;
                    }
                    if (!$v['not_gpc']) {
                        $cleanv =& $ts->stripSlashesGPC($cleanv);
                    }
                    break;
                case XOBJ_DTYPE_ARRAY:
                    $cleanv = serialize($cleanv);
                    break;
                case XOBJ_DTYPE_STIME:
                case XOBJ_DTYPE_MTIME:
                case XOBJ_DTYPE_LTIME:
                    $cleanv = !is_string($cleanv) ? intval($cleanv) : strtotime($cleanv);
                    break;
                default:
                    break;
                }
            }
            $this->cleanVars[$k] =& $cleanv;
            unset($cleanv);
        }
        if (count($this->_errors) > 0) {
	        $this->_errors = array_merge($existing_errors, $this->_errors);
            return false;
        }
	    $this->_errors = array_merge($existing_errors, $this->_errors);
        $this->unsetDirty();
        return true;
    }

    /**
     * dynamically register additional filter for the object
     * 
     * @param string $filtername name of the filter
     * @access public
     */
    function registerFilter($filtername)
    {
        $this->_filters[] = $filtername;
    }

    /**
     * load all additional filters that have been registered to the object
     * 
     * @access private
     */
    function _loadFilters()
    {
        //include_once XOOPS_ROOT_PATH.'/class/filters/filter.php';
        //foreach ($this->_filters as $f) {
        //    include_once XOOPS_ROOT_PATH.'/class/filters/'.strtolower($f).'php';
        //}
    }

    /**
     * create a clone(copy) of the current object
     * 
     * @access public
     * @return object clone
     */
    function &xoopsClone()
    {
        $class = get_class($this);
        $clone =& new $class();
        foreach ($this->vars as $k => $v) {
            $clone->assignVar($k, $v['value']);
        }
        // need this to notify the handler class that this is a newly created object
        $clone->setNew();
        return $clone;
    }

    /**
     * add an error 
     * 
     * @param string $value error to add
     * @access public
     */
    function setErrors($err_str)
    {
        $this->_errors[] = trim($err_str);
    }

    /**
     * return the errors for this object as an array
     * 
     * @return array an array of errors
     * @access public
     */
    function getErrors()
    {
        return $this->_errors;
    }

    /**
     * return the errors for this object as html
     * 
     * @return string html listing the errors
     * @access public
     */
    function getHtmlErrors()
    {
        $ret = '<h4>Errors</h4>';
        if (!empty($this->_errors)) {
            foreach ($this->_errors as $error) {
                $ret .= $error.'<br />';
            }
        } else {
            $ret .= 'None<br />';
        }
        return $ret;
    }
}

/**
* XOOPS object handler class.  
* This class is an abstract class of handler classes that are responsible for providing
* data access mechanisms to the data source of its corresponsing data objects
* @package kernel
* @abstract
*
* @author  Kazumi Ono <[e-mail]>
* @copyright copyright &copy; 2000 The XOOPS Project
*/
class XoopsObjectHandler
{

    /**
     * holds referenced to {@link XoopsDatabase} class object
	 * 
	 * @var object
	 * @see XoopsDatabase
     * @access protected
     */
    var $db;

    // 
    /**
     * called from child classes only
	 * 
	 * @param object $db reference to the {@link XoopsDatabase} object
     * @access protected
     */
    function XoopsObjectHandler(&$db)
    {
        $this->db =& $db;
    }

    /**
     * creates a new object
     * 
     * @abstract
     */
    function &create()
    {
    }

    /**
     * gets a value object
     * 
	 * @param int $int_id
     * @abstract
     */
    function &get($int_id)
    {
    }

    /**
     * insert/update object
     * 
	 * @param object $object
     * @abstract
     */
    function insert(&$object)
    {
    }

    /**
     * delete obejct from database
     * 
	 * @param object $object
     * @abstract
     */
    function delete(&$object)
    {
    }

}
?>