Parse RSS items as activities
First steps to parsing RSS items as activities. RSS feeds don't seem to have enough data to make good remote profiles, but this may work with some "hints".
This commit is contained in:
Evan Prodromou
parent
ac609e8040
commit
05e3768e6a
272
lib/activity.php
272
lib/activity.php
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@ -643,38 +643,11 @@ class ActivityObject
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);
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if ($element->tagName == 'author') {
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$this->type = self::PERSON; // XXX: is this fair?
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$this->title = $this->_childContent($element, self::NAME);
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$this->id = $this->_childContent($element, self::URI);
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if (empty($this->id)) {
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$email = $this->_childContent($element, self::EMAIL);
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if (!empty($email)) {
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// XXX: acct: ?
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$this->id = 'mailto:'.$email;
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}
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}
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$this->_fromAuthor($element);
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} else if ($element->tagName == 'item') {
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$this->_fromRssItem($element);
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} else {
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$this->type = $this->_childContent($element, Activity::OBJECTTYPE,
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Activity::SPEC);
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if (empty($this->type)) {
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$this->type = ActivityObject::NOTE;
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}
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$this->id = $this->_childContent($element, self::ID);
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$this->title = $this->_childContent($element, self::TITLE);
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$this->summary = $this->_childContent($element, self::SUMMARY);
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$this->source = $this->_getSource($element);
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$this->content = ActivityUtils::getContent($element);
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$this->link = ActivityUtils::getPermalink($element);
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$this->_fromAtomEntry($element);
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}
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// Some per-type attributes...
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@ -697,6 +670,72 @@ class ActivityObject
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}
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}
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private function _fromAuthor($element)
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{
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$this->type = self::PERSON; // XXX: is this fair?
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$this->title = $this->_childContent($element, self::NAME);
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$this->id = $this->_childContent($element, self::URI);
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if (empty($this->id)) {
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$email = $this->_childContent($element, self::EMAIL);
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if (!empty($email)) {
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// XXX: acct: ?
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$this->id = 'mailto:'.$email;
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}
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}
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}
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private function _fromAtomEntry($element)
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{
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$this->type = $this->_childContent($element, Activity::OBJECTTYPE,
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Activity::SPEC);
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if (empty($this->type)) {
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$this->type = ActivityObject::NOTE;
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}
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$this->id = $this->_childContent($element, self::ID);
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$this->title = $this->_childContent($element, self::TITLE);
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$this->summary = $this->_childContent($element, self::SUMMARY);
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$this->source = $this->_getSource($element);
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$this->content = ActivityUtils::getContent($element);
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$this->link = ActivityUtils::getPermalink($element);
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}
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// @fixme rationalize with Activity::_fromRssItem()
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private function _fromRssItem($item)
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{
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$this->title = ActivityUtils::childContent($item, ActivityObject::TITLE, Activity::RSS);
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$contentEl = ActivityUtils::child($item, ActivityUtils::CONTENT, Activity::CONTENTNS);
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if (!empty($contentEl)) {
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$this->content = htmlspecialchars_decode($contentEl->textContent, ENT_QUOTES);
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} else {
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$descriptionEl = ActivityUtils::child($item, Activity::DESCRIPTION, Activity::RSS);
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if (!empty($descriptionEl)) {
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$this->content = htmlspecialchars_decode($descriptionEl->textContent, ENT_QUOTES);
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}
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}
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$this->link = ActivityUtils::childContent($item, ActivityUtils::LINK, Activity::RSS);
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$guidEl = ActivityUtils::child($item, Activity::GUID, Activity::RSS);
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if (!empty($guidEl)) {
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$this->id = $guidEl->textContent;
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if ($guidEl->hasAttribute('isPermaLink')) {
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// overwrites <link>
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$this->link = $this->id;
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}
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}
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}
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private function _childContent($element, $tag, $namespace=ActivityUtils::ATOM)
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{
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return ActivityUtils::childContent($element, $tag, $namespace);
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@ -1051,6 +1090,21 @@ class Activity
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const PUBLISHED = 'published';
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const UPDATED = 'updated';
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const RSS = null; // no namespace!
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const PUBDATE = 'pubDate';
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const DESCRIPTION = 'description';
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const GUID = 'guid';
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const SELF = 'self';
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const IMAGE = 'image';
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const URL = 'url';
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const DC = 'http://purl.org/dc/elements/1.1/';
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const CREATOR = 'creator';
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const CONTENTNS = 'http://purl.org/rss/1.0/modules/content/';
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public $actor; // an ActivityObject
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public $verb; // a string (the URL)
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public $object; // an ActivityObject
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@ -1081,8 +1135,6 @@ class Activity
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return;
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}
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$this->entry = $entry;
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// Insist on a feed's root DOMElement; don't allow a DOMDocument
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if ($feed instanceof DOMDocument) {
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throw new ClientException(
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@ -1090,8 +1142,22 @@ class Activity
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);
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}
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$this->entry = $entry;
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$this->feed = $feed;
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if ($entry->namespaceURI == Activity::ATOM &&
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$entry->localName == 'entry') {
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$this->_fromAtomEntry($entry, $feed);
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} else if ($entry->namespaceURI == Activity::RSS &&
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$entry->localName == 'item') {
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$this->_fromRssItem($entry, $feed);
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} else {
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throw new Exception("Unknown DOM element: {$entry->namespaceURI} {$entry->localName}");
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}
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}
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function _fromAtomEntry($entry, $feed)
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{
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$pubEl = $this->_child($entry, self::PUBLISHED, self::ATOM);
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if (!empty($pubEl)) {
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@ -1177,6 +1243,69 @@ class Activity
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}
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}
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function _fromRssItem($item, $rss)
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{
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$verbEl = $this->_child($item, self::VERB);
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if (!empty($verbEl)) {
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$this->verb = trim($verbEl->textContent);
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} else {
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$this->verb = ActivityVerb::POST;
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// XXX: do other implied stuff here
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}
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$pubDateEl = $this->_child($item, self::PUBDATE, self::RSS);
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if (!empty($pubDateEl)) {
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$this->time = strtotime($pubDateEl->textContent);
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}
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$authorEl = $this->_child($item, self::AUTHOR, self::RSS);
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if (!empty($authorEl)) {
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$this->actor = $this->_fromRssAuthor($authorEl);
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} else {
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$dcCreatorEl = $this->_child($item, self::CREATOR, self::DC);
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if (!empty($dcCreatorEl)) {
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$this->actor = $this->_fromDcCreator($dcCreatorEl);
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} else if (!empty($rss)) {
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$this->actor = $this->_fromRss($rss);
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}
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}
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$this->title = ActivityUtils::childContent($item, ActivityObject::TITLE, self::RSS);
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$contentEl = ActivityUtils::child($item, ActivityUtils::CONTENT, self::CONTENTNS);
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if (!empty($contentEl)) {
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$this->content = htmlspecialchars_decode($contentEl->textContent, ENT_QUOTES);
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} else {
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$descriptionEl = ActivityUtils::child($item, self::DESCRIPTION, self::RSS);
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if (!empty($descriptionEl)) {
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$this->content = htmlspecialchars_decode($descriptionEl->textContent, ENT_QUOTES);
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}
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}
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$this->link = ActivityUtils::childContent($item, ActivityUtils::LINK, self::RSS);
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// @fixme enclosures
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// @fixme thumbnails... maybe
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$guidEl = ActivityUtils::child($item, self::GUID, self::RSS);
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if (!empty($guidEl)) {
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$this->id = $guidEl->textContent;
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if ($guidEl->hasAttribute('isPermaLink') && $guidEl->getAttribute('isPermaLink') != 'false') {
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// overwrites <link>
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$this->link = $this->id;
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}
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}
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$this->object = new ActivityObject($item);
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$this->context = new ActivityContext($item);
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}
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/**
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* Returns an Atom <entry> based on this activity
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*
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@ -1249,6 +1378,83 @@ class Activity
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return $xs->getString();
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}
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function _fromRssAuthor($el)
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{
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$text = $el->textContent;
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if (preg_match('/^(.*?) \((.*)\)$/', $text, $match)) {
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$email = $match[1];
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$name = $match[2];
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} else if (preg_match('/^(.*?) <(.*)>$/', $text, $match)) {
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$name = $match[1];
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$email = $match[2];
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} else if (preg_match('/.*@.*/', $text)) {
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$email = $text;
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$name = null;
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} else {
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$name = $text;
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$email = null;
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}
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// Not really enough info
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$actor = new ActivityObject();
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$actor->element = $el;
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$actor->type = ActivityObject::PERSON;
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$actor->title = $name;
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if (!empty($email)) {
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$actor->id = 'mailto:'.$email;
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}
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return $actor;
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}
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function _fromDcCreator($el)
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{
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// Not really enough info
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$text = $el->textContent;
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$actor = new ActivityObject();
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$actor->element = $el;
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$actor->title = $text;
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$actor->type = ActivityObject::PERSON;
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return $actor;
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}
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function _fromRss($el)
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{
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$actor = new ActivityObject();
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$actor->element = $el;
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$actor->type = ActivityObject::PERSON; // @fixme guess better
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$actor->title = ActivityUtils::childContent($el, ActivityObject::TITLE, self::RSS);
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$actor->link = ActivityUtils::childContent($el, ActivityUtils::LINK, self::RSS);
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$actor->id = ActivityUtils::getLink($el, self::SELF);
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$desc = ActivityUtils::childContent($el, self::DESCRIPTION, self::RSS);
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if (!empty($desc)) {
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$actor->content = htmlspecialchars_decode($desc, ENT_QUOTES);
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}
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$imageEl = ActivityUtils::child($el, self::IMAGE, self::RSS);
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if (!empty($imageEl)) {
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$actor->avatarLinks[] = ActivityUtils::childContent($imageEl, self::URL, self::RSS);
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}
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return $actor;
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}
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private function _child($element, $tag, $namespace=self::SPEC)
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{
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return ActivityUtils::child($element, $tag, $namespace);
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@ -138,9 +138,38 @@ class ActivityParseTests extends PHPUnit_Framework_TestCase
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$this->assertEquals($poco->urls[0]->value, 'http://example.com/blog.html');
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$this->assertEquals($poco->urls[0]->primary, 'true');
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$this->assertEquals($act->actor->geopoint, '37.7749295 -122.4194155');
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}
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public function testExample6()
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{
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global $_example6;
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$dom = DOMDocument::loadXML($_example6);
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$rss = $dom->documentElement;
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$channels = $dom->getElementsByTagName('channel');
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$channel = $channels->item(0);
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$items = $channel->getElementsByTagName('item');
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$item = $items->item(0);
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$act = new Activity($item, $channel);
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$this->assertEquals($act->verb, ActivityVerb::POST);
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$this->assertEquals($act->id, 'http://en.blog.wordpress.com/?p=3857');
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$this->assertEquals($act->link, 'http://en.blog.wordpress.com/2010/03/03/rub-a-dub-dub-in-the-pubsubhubbub/');
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$this->assertEquals($act->title, 'Rub-a-Dub-Dub in the PubSubHubbub');
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$this->assertEquals($act->time, 1267634892);
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$actor = $act->actor;
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$this->assertFalse(empty($actor));
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$this->assertEquals($actor->title, "Joseph Scott");
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}
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}
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$_example1 = <<<EXAMPLE1
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@ -330,3 +359,67 @@ $_example5 = <<<EXAMPLE5
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</entry>
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</feed>
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EXAMPLE5;
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$_example6 = <<<EXAMPLE6
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<?xml version="1.0" encoding="UTF-8"?>
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<rss version="2.0"
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xmlns:content="http://purl.org/rss/1.0/modules/content/"
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xmlns:wfw="http://wellformedweb.org/CommentAPI/"
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:atom="http://www.w3.org/2005/Atom"
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xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
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xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
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xmlns:georss="http://www.georss.org/georss" xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#" xmlns:media="http://search.yahoo.com/mrss/"
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>
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<channel>
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<title>WordPress.com News</title>
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<atom:link href="http://en.blog.wordpress.com/feed/" rel="self" type="application/rss+xml" />
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<link>http://en.blog.wordpress.com</link>
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<description>The latest news on WordPress.com and the WordPress community.</description>
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<lastBuildDate>Thu, 18 Mar 2010 23:25:35 +0000</lastBuildDate>
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<generator>http://wordpress.com/</generator>
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<language>en</language>
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<sy:updatePeriod>hourly</sy:updatePeriod>
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<sy:updateFrequency>1</sy:updateFrequency>
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<cloud domain='en.blog.wordpress.com' port='80' path='/?rsscloud=notify' registerProcedure='' protocol='http-post' />
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<image>
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<url>http://www.gravatar.com/blavatar/e6392390e3bcfadff3671c5a5653d95b?s=96&d=http://s2.wp.com/i/buttonw-com.png</url>
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<title>WordPress.com News</title>
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<link>http://en.blog.wordpress.com</link>
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</image>
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<atom:link rel="search" type="application/opensearchdescription+xml" href="http://en.blog.wordpress.com/osd.xml" title="WordPress.com News" />
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<atom:link rel='hub' href='http://en.blog.wordpress.com/?pushpress=hub'/>
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<item>
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<title>Rub-a-Dub-Dub in the PubSubHubbub</title>
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<link>http://en.blog.wordpress.com/2010/03/03/rub-a-dub-dub-in-the-pubsubhubbub/</link>
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<comments>http://en.blog.wordpress.com/2010/03/03/rub-a-dub-dub-in-the-pubsubhubbub/#comments</comments>
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<pubDate>Wed, 03 Mar 2010 16:48:12 +0000</pubDate>
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<dc:creator>Joseph Scott</dc:creator>
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<category><![CDATA[Feeds]]></category>
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<category><![CDATA[atom]]></category>
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<category><![CDATA[pubsubhubbub]]></category>
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<category><![CDATA[rss]]></category>
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<guid isPermaLink="false">http://en.blog.wordpress.com/?p=3857</guid>
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<description><![CDATA[From the tongue twisting name department we welcome PubSubHubbub, or as some people have shortened it to: PuSH. Like rssCloud, PuSH is a way for services that subscribe to updates from your blog (think Google Reader, Bloglines or Netvibes) to get updates even faster. In a nutshell, instead of having to periodically ask [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=en.blog.wordpress.com&blog=3584907&post=3857&subd=en.blog&ref=&feed=1" />]]></description>
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<content:encoded><![CDATA[<p>From the tongue twisting name department we welcome <a href="http://code.google.com/p/pubsubhubbub/">PubSubHubbub</a>, or as some people have shortened it to: PuSH. Like <a href="http://en.blog.wordpress.com/2009/09/07/rss-in-the-clouds/">rssCloud</a>, PuSH is a way for services that subscribe to updates from your blog (think Google Reader, Bloglines or Netvibes) to get updates even faster. In a nutshell, instead of having to periodically ask your blog if there are any updates they can now register to automatically receive updates each time you publish new content. In most cases these updates are sent out within a second or two of when you hit the publish button.</p>
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<p>Today we’ve turned on PuSH support for the more than 10.5 million blogs on WordPress.com. There’s nothing to configure, it’s working right now behind the scenes to help others keep up to date with your posts.</p>
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<p>For those using the WordPress.org software we are releasing a new PuSH plugin: <a href="http://wordpress.org/extend/plugins/pushpress/">PuSHPress</a>. This plugin differs from the current PuSH related plugins by including a built-in hub.</p>
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<p>For more PuSH related reading check out the <a href="http://code.google.com/p/pubsubhubbub/">PubSubHubbub project site</a> and <a href="http://groups.google.com/group/pubsubhubbub?pli=1">Google Group</a>. And if you really want to geek out there’s always the <a href="http://pubsubhubbub.googlecode.com/svn/trunk/pubsubhubbub-core-0.3.html">PubSubHubbub Spec</a> <img src='http://s.wordpress.com/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' /> </p>
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<br /> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/en.blog.wordpress.com/3857/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/en.blog.wordpress.com/3857/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/en.blog.wordpress.com/3857/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/en.blog.wordpress.com/3857/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/en.blog.wordpress.com/3857/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/en.blog.wordpress.com/3857/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/en.blog.wordpress.com/3857/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/en.blog.wordpress.com/3857/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/en.blog.wordpress.com/3857/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/en.blog.wordpress.com/3857/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=en.blog.wordpress.com&blog=3584907&post=3857&subd=en.blog&ref=&feed=1" />]]></content:encoded>
|
||||
<wfw:commentRss>http://en.blog.wordpress.com/2010/03/03/rub-a-dub-dub-in-the-pubsubhubbub/feed/</wfw:commentRss>
|
||||
|
||||
<slash:comments>96</slash:comments>
|
||||
|
||||
<media:content url="http://1.gravatar.com/avatar/582b66ad5ae1b69c7601a990cb9a661a?s=96&d=identicon" medium="image">
|
||||
<media:title type="html">josephscott</media:title>
|
||||
</media:content>
|
||||
</item>
|
||||
</channel>
|
||||
</rss>
|
||||
EXAMPLE6;
|
||||
|
||||
|
|
|
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Reference in New Issue