/**
* URLからフィードを取得
*
* @param string $url
* @return Atom
*/
public function do_read($url)
{
$urls = func_get_args();
$feed = null;
if (!self::$CACHE || File::isExpiry($urls, self::$CACHE_TIME)) {
foreach ($urls as $url) {
if (is_string($url) && ($url = trim($url)) && !empty($url)) {
if (!self::$CACHE || File::isExpiry($url, self::$CACHE_TIME)) {
$src = Tag::xhtmlnize($this->do_get($url)->body(), "link");
if (Tag::setof($tag, $src, "head")) {
foreach ($tag->in("link") as $link) {
if ("alternate" == strtolower($link->inParam("rel")) && strpos(strtolower($link->inParam("type")), "application") === 0 && $url != ($link = File::absolute($url, $link->inParam("href")))) {
$src = $this->do_get($link)->body();
break;
}
}
}
$tmp = self::parse($src);
if (self::$CACHE) {
File::cwrite($url, $tmp);
}
} else {
$tmp = File::cread($url);
}
if ($feed === null) {
if ($this->title !== null) {
$tmp->title($this->title());
}
if ($this->subtitle !== null) {
$tmp->subtitle($this->subtitle());
}
if ($this->id !== null) {
$tmp->id($this->id());
}
if ($this->generator !== null) {
$tmp->generator($this->generator());
}
if ($this->updated !== null) {
$tmp->updated($this->updated());
}
$feed = $tmp;
} else {
$feed->add($tmp);
}
}
}
if (!$feed instanceof Atom) {
$feed = new Atom();
}
$feed->sort();
if (self::$CACHE) {
File::cwrite($urls, $feed);
}
} else {
$feed = File::cread($urls);
}
return $feed;
}