let activities generate their own XML

This commit is contained in:
Evan Prodromou 2010-02-21 10:50:51 -05:00
parent e9d22138ef
commit ff2efd314f

View File

@ -55,6 +55,9 @@ class ActivityUtils
const TYPE = 'type'; const TYPE = 'type';
const HREF = 'href'; const HREF = 'href';
const CONTENT = 'content';
const SRC = 'src';
/** /**
* Get the permalink for an Activity object * Get the permalink for an Activity object
* *
@ -139,6 +142,64 @@ class ActivityUtils
return $el->textContent; return $el->textContent;
} }
} }
/**
* Get the content of an atom:entry-like object
*
* @param DOMElement $element The element to examine.
*
* @return string unencoded HTML content of the element, like "This -&lt; is <b>HTML</b>."
*
* @todo handle remote content
* @todo handle embedded XML mime types
* @todo handle base64-encoded non-XML and non-text mime types
*/
static function getContent($element)
{
$contentEl = ActivityUtils::child($element, self::CONTENT);
if (!empty($contentEl)) {
$src = $contentEl->getAttribute(self::SRC);
if (!empty($src)) {
throw new ClientException(_("Can't handle remote content yet."));
}
$type = $contentEl->getAttribute(self::TYPE);
// slavishly following http://atompub.org/rfc4287.html#rfc.section.4.1.3.3
if ($type == 'text') {
return $contentEl->textContent;
} else if ($type == 'html') {
$text = $contentEl->textContent;
return htmlspecialchars_decode($text, ENT_QUOTES);
} else if ($type == 'xhtml') {
$divEl = ActivityUtils::child($contentEl, 'div');
if (empty($divEl)) {
return null;
}
$doc = $divEl->ownerDocument;
$text = '';
$children = $divEl->childNodes;
for ($i = 0; $i < $children->length; $i++) {
$child = $children->item($i);
$text .= $doc->saveXML($child);
}
return trim($text);
} else if (in_array(array('text/xml', 'application/xml'), $type) ||
preg_match('#(+|/)xml$#', $type)) {
throw new ClientException(_("Can't handle embedded XML content yet."));
} else if (strncasecmp($type, 'text/', 5)) {
return $contentEl->textContent;
} else {
throw new ClientException(_("Can't handle embedded Base64 content yet."));
}
}
}
} }
/** /**
@ -182,9 +243,6 @@ class ActivityObject
const TITLE = 'title'; const TITLE = 'title';
const SUMMARY = 'summary'; const SUMMARY = 'summary';
const CONTENT = 'content';
const TYPE = 'type';
const SRC = 'src';
const ID = 'id'; const ID = 'id';
const SOURCE = 'source'; const SOURCE = 'source';
@ -248,7 +306,7 @@ class ActivityObject
$this->source = $this->_getSource($element); $this->source = $this->_getSource($element);
$this->content = $this->_getContent($element); $this->content = ActivityUtils::getContent($element);
$this->link = ActivityUtils::getPermalink($element); $this->link = ActivityUtils::getPermalink($element);
@ -287,64 +345,6 @@ class ActivityObject
} }
} }
/**
* Get the content of an atom:entry-like object
*
* @param DOMElement $element The element to examine.
*
* @return string unencoded HTML content of the element, like "This -&lt; is <b>HTML</b>."
*
* @todo handle remote content
* @todo handle embedded XML mime types
* @todo handle base64-encoded non-XML and non-text mime types
*/
private function _getContent($element)
{
$contentEl = ActivityUtils::child($element, self::CONTENT);
if (!empty($contentEl)) {
$src = $contentEl->getAttribute(self::SRC);
if (!empty($src)) {
throw new ClientException(_("Can't handle remote content yet."));
}
$type = $contentEl->getAttribute(self::TYPE);
// slavishly following http://atompub.org/rfc4287.html#rfc.section.4.1.3.3
if ($type == 'text') {
return $contentEl->textContent;
} else if ($type == 'html') {
$text = $contentEl->textContent;
return htmlspecialchars_decode($text, ENT_QUOTES);
} else if ($type == 'xhtml') {
$divEl = ActivityUtils::child($contentEl, 'div');
if (empty($divEl)) {
return null;
}
$doc = $divEl->ownerDocument;
$text = '';
$children = $divEl->childNodes;
for ($i = 0; $i < $children->length; $i++) {
$child = $children->item($i);
$text .= $doc->saveXML($child);
}
return trim($text);
} else if (in_array(array('text/xml', 'application/xml'), $type) ||
preg_match('#(+|/)xml$#', $type)) {
throw new ClientException(_("Can't handle embedded XML content yet."));
} else if (strncasecmp($type, 'text/', 5)) {
return $contentEl->textContent;
} else {
throw new ClientException(_("Can't handle embedded Base64 content yet."));
}
}
}
static function fromNotice($notice) static function fromNotice($notice)
{ {
$object = new ActivityObject(); $object = new ActivityObject();
@ -359,6 +359,18 @@ class ActivityObject
return $object; return $object;
} }
static function fromProfile($profile)
{
$object = new ActivityObject();
$object->type = ActivityObject::PERSON;
$object->id = $profile->getUri();
$object->title = $this->getBestName();
$object->link = $profile->profileurl;
return $object;
}
function asString($tag='activity:object') function asString($tag='activity:object')
{ {
$xs = new XMLStringer(true); $xs = new XMLStringer(true);
@ -550,6 +562,11 @@ class Activity
public $entry; // the source entry public $entry; // the source entry
public $feed; // the source feed public $feed; // the source feed
public $summary; // summary of activity
public $content; // HTML content of activity
public $id; // ID of the activity
public $title; // title of the activity
/** /**
* Turns a regular old Atom <entry> into a magical activity * Turns a regular old Atom <entry> into a magical activity
* *
@ -557,8 +574,12 @@ class Activity
* @param DOMElement $feed Atom feed, for context * @param DOMElement $feed Atom feed, for context
*/ */
function __construct($entry, $feed = null) function __construct($entry = null, $feed = null)
{ {
if (is_null($entry)) {
return;
}
$this->entry = $entry; $this->entry = $entry;
$this->feed = $feed; $this->feed = $feed;
@ -629,6 +650,10 @@ class Activity
if (!empty($targetEl)) { if (!empty($targetEl)) {
$this->target = new ActivityObject($targetEl); $this->target = new ActivityObject($targetEl);
} }
$this->summary = ActivityUtils::childContent($entry, 'summary');
$this->id = ActivityUtils::childContent($entry, 'id');
$this->content = ActivityUtils::getContent($entry);
} }
/** /**
@ -642,6 +667,47 @@ class Activity
return null; return null;
} }
function asString($namespace=false)
{
$xs = new XMLStringer(true);
if ($namespace) {
$attrs = array('xmlns' => 'http://www.w3.org/2005/Atom',
'xmlns:activity' => 'http://activitystrea.ms/spec/1.0/',
'xmlns:ostatus' => 'http://ostatus.org/schema/1.0');
} else {
$attrs = array();
}
$xs->elementStart('entry', $attrs);
$xs->element('id', null, $this->id);
$xs->element('title', null, $this->title);
$xs->element('published', null, common_date_iso8601($this->time));
$xs->element('content', array('type' => 'html'), $this->content);
if (!empty($this->summary)) {
$xs->element('summary', null, $this->summary);
}
if (!empty($this->link)) {
$xs->element('link', array('rel' => 'alternate',
'type' => 'text/html'),
$this->link);
}
// XXX: add context
// XXX: add target
$xs->raw($this->actor->asString());
$xs->element('activity:verb', null, $this->verb);
$xs->raw($this->object->asString());
$xs->elementEnd('entry');
return $xs->getString();
}
private function _child($element, $tag, $namespace=self::SPEC) private function _child($element, $tag, $namespace=self::SPEC)
{ {
return ActivityUtils::child($element, $tag, $namespace); return ActivityUtils::child($element, $tag, $namespace);