rss feed plus

Added an action for creating an RSS 1.0 (RDF) feed. To make this work,
added a couple of helper functions to util, and changed the HTML stuff
to use the helper functions.

Also, changed a bit of formatting in the profile. Yeah, not a clean
changeset.

darcs-hash:20080521143351-84dde-d191761c399d7f014b990585c21e916e887b3401.gz

actions/rss10.php

@@ -0,0 +1,130 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
+class Rss10Action extends Action {
+
+	function handle($args) {
+		parent::handle($args);
+		
+		$nickname = $this->trimmed('nickname');
+		
+		if (!$nickname) {
+			common_user_error(_t('No nickname provided.'));
+		}
+		
+		$user = User::staticGet('nickname', $nickname);
+		
+		if (!$user) {
+			common_user_error(_t('No such nickname.'));
+		}
+		
+		$limit = (int) $this->trimmed('limit');
+		
+		$this->show_rss($user, $limit);
+	}
+	
+	function show_rss($user, $limit=0) {
+		
+		global $config;
+		
+		header('Content-Type: application/rdf+xml');
+
+		common_start_xml();
+		common_element_start('rdf:RDF', array('xmlns:rdf' =>
+											  'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
+											  'xmlns' => 'http://purl.org/rss/1.0/'));
+
+		$notices = $this->get_notices($user, $limit);
+		$this->show_channel($user, $notices);
+		
+		foreach ($notices as $n) {
+			$this->show_item($n);
+		}
+		
+		common_element_end('rdf:RDF');
+	}
+	
+	function get_notices($user, $limit=0) {
+		$notices = array();
+		
+		$notice = DB_DataObject::factory('notice');
+		$notice->profile_id = $user->id; # user id === profile id
+		$notice->orderBy('created DESC');
+		if ($limit != 0) {
+			$notice->limit(0, $limit);
+		}
+		$notice->find();
+		
+		while ($notice->fetch()) {
+			$notices[] = clone($notice);
+		}
+		
+		return $notices;
+	}
+	
+	function show_channel($user, $notices) {
+		
+		# XXX: this is kind of indirect, eh?
+		$profile = $user->getProfile();
+		$avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
+		
+		common_element_start('channel', array('rdf:about' =>
+											  common_local_url('rss10',
+															   array('nickname' => 
+																	 $user->nickname))));
+		common_element('title', NULL, $user->nickname);
+		common_element('link', NULL, $profile->profileurl);
+		common_element('description', NULL, _t('Microblog by ') . $user->nickname);
+
+		if ($avatar) {
+			common_element('image', array('rdf:resource' => $avatar->url));
+		}
+
+		common_element_start('items');
+		common_element_start('rdf:Seq');
+		foreach ($notices as $n) {
+			common_element('rdf:li', array('rdf:resource' =>
+										   common_local_url('shownotice',
+															array('notice' => $n->id))));
+		}
+		
+		common_element_end('rdf:Seq');
+		common_element_end('items');
+		common_element_end('channel');
+		
+		if ($avatar) {
+			common_element_start('image', array('rdf:about' => $avatar->url));
+			common_element('title', NULL, $user->nickname);
+			common_element('link', NULL, $profile->profileurl);
+			common_element('url', NULL, $avatar->url);
+			common_element_end('image');
+		}
+	}
+	
+	function show_item($notice) {
+		$nurl = common_local_url('shownotice', array('notice' => $n->id));
+		common_element_start('item', array('rdf:about' => $nurl));
+		common_element('title', NULL, $notice->created);
+		common_element('link', NULL, $nurl);
+		common_element('description', NULL, common_render_content($notice->content));
+		common_element_end('item');
+	}
+}

actions/showstream.php

@@ -101,13 +101,14 @@ class ShowstreamAction extends StreamAction {
 										'alt' => $profile->nickname));
 		}
 		if ($profile->fullname) {
+			common_element_start('div', 'fullname');
 			if ($profile->homepage) {
-				common_element('a', array('href' => $profile->homepage,
-										  'class' => 'fullname'),
+				common_element('a', array('href' => $profile->homepage),
 							   $profile->fullname);
 			} else {
-				common_element('div', 'fullname', $profile->fullname);
+				common_text($profile->fullname);
 			}
+			common_element_end('div');
 		}
 		if ($profile->location) {
 			common_element('div', 'location', $profile->location);

lib/util.php

@@ -65,16 +65,30 @@ function common_element($tag, $attrs=NULL, $content=NULL) {
 	common_element_end($tag);
 }
 
+function common_start_xml($doc=NULL, $public=NULL, $system=NULL) {
+	global $xw;
+	$xw = new XMLWriter();
+	$xw->openURI('php://output');
+	$xw->setIndent(true);
+	$xw->startDocument('1.0', 'UTF-8');
+	if ($doc) {
+		$xw->writeDTD($doc, $public, $system);
+	}
+}
+
+function common_end_xml() {
+	global $xw;
+	$xw->endDocument();
+	$xw->flush();
+}
+
 function common_show_header($pagetitle) {
 	global $config, $xw;
 
 	header('Content-Type: application/xhtml+xml');
 
-	$xw = new XMLWriter();
-	$xw->openURI('php://output');
-	$xw->setIndent(true);
-	$xw->startDocument('1.0', 'UTF-8');
-	$xw->writeDTD('html', '-//W3C//DTD XHTML 1.0 Strict//EN',
+	common_start_xml('html',
+					 '-//W3C//DTD XHTML 1.0 Strict//EN',
 					 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
 
 	# FIXME: correct language for interface
@@ -121,8 +135,7 @@ function common_show_footer() {
 	common_element_end('div');
 	common_element_end('body');
 	common_element_end('html');
-	$xw->endDocument();
-	$xw->flush();
+	common_end_xml();
 }
 
 function common_text($txt) {