* @category typecho
* @package Feed
* @copyright Copyright (c) 2008 Typecho team (http://www.typecho.org)
* @license GNU General Public License 2.0
* @version $Id: Feed.php 219 2008-05-27 09:06:15Z magike.net $
*/
/**
* Typecho_Feed
*
* @author qining
* @category typecho
* @package Feed
* @copyright Copyright (c) 2008 Typecho team (http://www.typecho.org)
* @license GNU General Public License 2.0
*/
class Typecho_Feed
{
/** 定义RSS 1.0类型 */
const RSS1 = 'RSS 1.0';
/** 定义RSS 2.0类型 */
const RSS2 = 'RSS 2.0';
/** 定义ATOM 1.0类型 */
const ATOM1 = 'ATOM 1.0';
/** 定义RSS时间格式 */
const DATE_RFC822 = 'r';
/** 定义ATOM时间格式 */
const DATE_W3CDTF = 'c';
/** 定义行结束符 */
const EOL = "\n";
/**
* feed状态
*
* @access private
* @var string
*/
private $_type;
/**
* 字符集编码
*
* @access private
* @var string
*/
private $_charset;
/**
* 语言状态
*
* @access private
* @var string
*/
private $_lang;
/**
* 聚合地址
*
* @access private
* @var string
*/
private $_feedUrl;
/**
* 基本地址
*
* @access private
* @var unknown
*/
private $_baseUrl;
/**
* 聚合标题
*
* @access private
* @var string
*/
private $_title;
/**
* 聚合副标题
*
* @access private
* @var string
*/
private $_subTitle;
/**
* 版本信息
*
* @access private
* @var string
*/
private $_version;
/**
* 所有的items
*
* @access private
* @var array
*/
private $_items = array();
/**
* 创建Feed对象
*
* @access public
* @return void
*/
public function __construct($version, $type = self::RSS2, $charset = 'UTF-8', $lang = 'en')
{
$this->_version = $version;
$this->_type = $type;
$this->_charset = $charset;
$this->_lang = $lang;
}
/**
* 设置标题
*
* @access public
* @param string $title 标题
* @return void
*/
public function setTitle($title)
{
$this->_title = $title;
}
/**
* 设置副标题
*
* @access public
* @param string $subTitle 副标题
* @return void
*/
public function setSubTitle($subTitle)
{
$this->_subTitle = $subTitle;
}
/**
* 设置聚合地址
*
* @access public
* @param string $feedUrl 聚合地址
* @return void
*/
public function setFeedUrl($feedUrl)
{
$this->_feedUrl = $feedUrl;
}
/**
* 设置主页
*
* @access public
* @param string $baseUrl 主页地址
* @return void
*/
public function setBaseUrl($baseUrl)
{
$this->_baseUrl = $baseUrl;
}
/**
* 获取Feed时间格式
*
* @access public
* @param integer $stamp 时间戳
* @return string
*/
public function dateFormat($stamp)
{
if (self::RSS2 == $this->_type) {
return date(self::DATE_RFC822, $stamp);
} else if (self::RSS1 == $this->_type || self::ATOM1 == $this->_type) {
return date(self::DATE_W3CDTF, $stamp);
}
}
/**
* $item的格式为
*
* array (
* 'title' => 'xxx',
* 'content' => 'xxx',
* 'excerpt' => 'xxx',
* 'date' => 'xxx',
* 'link' => 'xxx',
* 'author' => 'xxx',
* 'comments' => 'xxx',
* 'commentsUrl'=> 'xxx',
* 'commentsFeedUrl' => 'xxx',
* )
*
*
* @access public
* @param array $item
* @return unknown
*/
public function addItem(array $item)
{
$this->_items[] = $item;
}
/**
* 输出字符串
*
* @access public
* @return string
*/
public function __toString()
{
$result = '_charset . '"?>' . self::EOL;
if (self::RSS1 == $this->_type) {
$result .= '' . self::EOL;
$content = '';
$links = array();
$lastUpdate = 0;
foreach ($this->_items as $item) {
$content .= '- ' . self::EOL;
$content .= '' . htmlspecialchars($item['title']) . '' . self::EOL;
$content .= '' . $item['link'] . '' . self::EOL;
$content .= '' . $this->dateFormat($item['date']) . '' . self::EOL;
$content .= '' . strip_tags($item['content']) . '' . self::EOL;
if (!empty($item['suffix'])) {
$content .= $item['suffix'];
}
$content .= '
' . self::EOL;
$links[] = $item['link'];
if ($item['date'] > $lastUpdate) {
$lastUpdate = $item['date'];
}
}
$result .= '
' . htmlspecialchars($this->_title) . '
' . $this->_baseUrl . '
' . htmlspecialchars($this->_subTitle) . '
' . self::EOL;
foreach ($links as $link) {
$result .= '' . self::EOL;
}
$result .= '
' . self::EOL;
$result .= $content . '';
} else if (self::RSS2 == $this->_type) {
$result .= '
' . self::EOL;
$content = '';
$lastUpdate = 0;
foreach ($this->_items as $item) {
$content .= '- ' . self::EOL;
$content .= '' . htmlspecialchars($item['title']) . '' . self::EOL;
$content .= '' . $item['link'] . '' . self::EOL;
$content .= '' . $item['link'] . '' . self::EOL;
$content .= '' . $this->dateFormat($item['date']) . '' . self::EOL;
$content .= '' . htmlspecialchars($item['author']->screenName) . '' . self::EOL;
if (!empty($item['category']) && is_array($item['category'])) {
foreach ($item['category'] as $category) {
$content .= '' . self::EOL;
}
}
if (!empty($item['excerpt'])) {
$content .= '' . self::EOL;
}
if (!empty($item['content'])) {
$content .= '' . self::EOL;
}
if (isset($item['comments']) && strlen($item['comments']) > 0) {
$content .= '' . $item['comments'] . '' . self::EOL;
}
$content .= '' . $item['link'] . '#comments' . self::EOL;
if (!empty($item['commentsFeedUrl'])) {
$content .= '' . $item['commentsFeedUrl'] . '' . self::EOL;
}
if (!empty($item['suffix'])) {
$content .= $item['suffix'];
}
$content .= '
' . self::EOL;
if ($item['date'] > $lastUpdate) {
$lastUpdate = $item['date'];
}
}
$result .= '' . htmlspecialchars($this->_title) . '
' . $this->_baseUrl . '
' . $this->_lang . '
' . htmlspecialchars($this->_subTitle) . '
' . $this->dateFormat($lastUpdate) . '
' . $this->dateFormat($lastUpdate) . '' . self::EOL;
$result .= $content . '
';
} else if (self::ATOM1 == $this->_type) {
$result .= '' . self::EOL;
$content = '';
$lastUpdate = 0;
foreach ($this->_items as $item) {
$content .= '' . self::EOL;
$content .= '<![CDATA[' . $item['title'] . ']]>' . self::EOL;
$content .= '' . self::EOL;
$content .= '' . $item['link'] . '' . self::EOL;
$content .= '' . $this->dateFormat($item['date']) . '' . self::EOL;
$content .= '' . $this->dateFormat($item['date']) . '' . self::EOL;
$content .= '
' . $item['author']->screenName . '
' . $item['author']->url . '
' . self::EOL;
if (!empty($item['category']) && is_array($item['category'])) {
foreach ($item['category'] as $category) {
$content .= '' . self::EOL;
}
}
if (!empty($item['excerpt'])) {
$content .= '' . self::EOL;
}
if (!empty($item['content'])) {
$content .= '' . self::EOL;
}
if (isset($item['comments']) && strlen($item['comments']) > 0) {
$content .= '' . self::EOL;
if (!empty($item['commentsFeedUrl'])) {
$content .= '' . self::EOL;
}
}
if (!empty($item['suffix'])) {
$content .= $item['suffix'];
}
$content .= '' . self::EOL;
if ($item['date'] > $lastUpdate) {
$lastUpdate = $item['date'];
}
}
$result .= '' . htmlspecialchars($this->_title) . '
' . htmlspecialchars($this->_subTitle) . '
' . $this->dateFormat($lastUpdate) . '
Typecho
' . $this->_feedUrl . '
';
$result .= $content . '';
}
return $result;
}
}