public function extract(\HTTP_Request2_Response $res)
{
$url = $res->getEffectiveUrl();
$base = new \Net_URL2($url);
$sx = simplexml_load_string($res->getBody());
$linkInfos = array();
$alreadySeen = array();
foreach ($sx->entry as $entry) {
$linkTitle = (string) $entry->title;
foreach ($entry->link as $xlink) {
$linkUrl = (string) $base->resolve((string) $xlink['href']);
if (isset($alreadySeen[$linkUrl])) {
continue;
}
if ($xlink['rel'] == 'alternate') {
$linkInfos[] = new LinkInfo($linkUrl, $linkTitle, $url);
}
$alreadySeen[$linkUrl] = true;
}
}
return $linkInfos;
}
/**
* Adds cookies set in HTTP response to the jar
*
* @param HTTP_Request2_Response $response HTTP response message
* @param Net_URL2 $setter original request URL, needed for
* setting default domain/path. If not given,
* effective URL from response will be used.
*
* @return bool whether all cookies were successfully stored
* @throws HTTP_Request2_LogicException
*/
public function addCookiesFromResponse(HTTP_Request2_Response $response, Net_URL2 $setter = null)
{
if (null === $setter) {
if (!($effectiveUrl = $response->getEffectiveUrl())) {
throw new HTTP_Request2_LogicException('Response URL required for adding cookies from response', HTTP_Request2_Exception::MISSING_VALUE);
}
$setter = new Net_URL2($effectiveUrl);
}
$success = true;
foreach ($response->getCookies() as $cookie) {
$success = $this->store($cookie, $setter) && $success;
}
return $success;
}
public function extract(\HTTP_Request2_Response $res)
{
$url = Helper::removeAnchor($res->getEffectiveUrl());
$linkInfos = array();
//FIXME: mime type switch for cdata
$doc = new \DOMDocument();
//@ to hide parse warning messages in invalid html
@$doc->loadHTML($res->getBody());
//FIXME: extract base url from html
$base = new \Net_URL2($url);
$dx = new \DOMXPath($doc);
$xbase = $dx->evaluate('/html/head/base[@href]')->item(0);
if ($xbase) {
$base = $base->resolve($xbase->attributes->getNamedItem('href')->textContent);
}
$meta = $dx->evaluate('/html/head/meta[@name="robots" and @content]')->item(0);
if ($meta) {
$robots = $meta->attributes->getNamedItem('content')->textContent;
foreach (explode(',', $robots) as $value) {
if (trim($value) == 'nofollow') {
//we shall not follow the links
return array();
}
}
}
$links = $dx->evaluate('//a');
//FIXME: link rel, img, video
$alreadySeen = array($url => true);
foreach ($links as $link) {
$linkTitle = Helper::sanitizeTitle($link->textContent);
$href = '';
foreach ($link->attributes as $attribute) {
if ($attribute->name == 'href') {
$href = $attribute->textContent;
} else {
if ($attribute->name == 'rel') {
foreach (explode(',', $attribute->textContent) as $value) {
if (trim($value) == 'nofollow') {
//we shall not follow this link
continue 3;
}
}
}
}
}
if ($href == '' || $href[0] == '#') {
//link on this page
continue;
}
$linkUrlObj = $base->resolve($href);
$linkUrlObj->setFragment(false);
$linkUrl = (string) $linkUrlObj;
if (isset($alreadySeen[$linkUrl])) {
continue;
}
switch ($linkUrlObj->getScheme()) {
case 'http':
case 'https':
break;
default:
continue 2;
}
//FIXME: check target type
$linkInfos[] = new LinkInfo($linkUrl, $linkTitle, $url);
$alreadySeen[$linkUrl] = true;
}
return $linkInfos;
}
