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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Feed_Reader
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Feed.php 18951 2009-11-12 16:26:19Z alexander $
*/
/**
* @see Zend_Feed_Reader_Extension_FeedAbstract
*/
require_once 'Zend/Feed/Reader/Extension/FeedAbstract.php';
require_once 'Zend/Date.php';
/**
* @category Zend
* @package Zend_Feed_Reader
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Feed_Reader_Extension_Syndication_Feed
extends Zend_Feed_Reader_Extension_FeedAbstract
{
/**
* Get update period
* @return string
*/
public function getUpdatePeriod()
{
$name = 'updatePeriod';
$period = $this->_getData($name);
if ($period === null) {
$this->_data[$name] = 'daily';
return 'daily'; //Default specified by spec
}
switch ($period)
{
case 'hourly':
case 'daily':
case 'weekly':
case 'yearly':
return $period;
default:
throw new Zend_Feed_Exception("Feed specified invalid update period: '$period'."
. " Must be one of hourly, daily, weekly or yearly"
);
}
}
/**
* Get update frequency
* @return int
*/
public function getUpdateFrequency()
{
$name = 'updateFrequency';
$freq = $this->_getData($name, 'number');
if (!$freq || $freq < 1) {
$this->_data[$name] = 1;
return 1;
}
return $freq;
}
/**
* Get update frequency as ticks
* @return int
*/
public function getUpdateFrequencyAsTicks()
{
$name = 'updateFrequency';
$freq = $this->_getData($name, 'number');
if (!$freq || $freq < 1) {
$this->_data[$name] = 1;
$freq = 1;
}
$period = $this->getUpdatePeriod();
$ticks = 1;
switch ($period)
{
//intentional fall through
case 'yearly':
$ticks *= 52; //TODO: fix generalisation, how?
case 'weekly':
$ticks *= 7;
case 'daily':
$ticks *= 24;
case 'hourly':
$ticks *= 3600;
break;
default: //Never arrive here, exception thrown in getPeriod()
break;
}
return $ticks / $freq;
}
/**
* Get update base
*
* @return Zend_Date|null
*/
public function getUpdateBase()
{
$updateBase = $this->_getData('updateBase');
$date = null;
if ($updateBase) {
$date = new Zend_Date;
$date->set($updateBase, Zend_Date::W3C);
}
return $date;
}
/**
* Get the entry data specified by name
*
* @param string $name
* @param string $type
* @return mixed|null
*/
private function _getData($name, $type = 'string')
{
if (array_key_exists($name, $this->_data)) {
return $this->_data[$name];
}
$data = $this->_xpath->evaluate($type . '(' . $this->getXpathPrefix() . '/syn10:' . $name . ')');
if (!$data) {
$data = null;
}
$this->_data[$name] = $data;
return $data;
}
/**
* Register Syndication namespaces
*
* @return void
*/
protected function _registerNamespaces()
{
$this->_xpath->registerNamespace('syn10', 'http://purl.org/rss/1.0/modules/syndication/');
}
}
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