add cloud support

lib/domain/rss_cloud.dart

@@ -0,0 +1,20 @@
+import 'package:xml/xml.dart';
+
+class RssCloud {
+  String domain;
+  String port;
+  String path;
+  String registerProcedure;
+  String protocol;
+
+  RssCloud(this.domain, this.port, this.path, this.registerProcedure, this.protocol);
+
+  factory RssCloud.parse(XmlElement node) {
+    var domain = node.getAttribute("domain");
+    var port = node.getAttribute("port");
+    var path = node.getAttribute("path");
+    var registerProcedure = node.getAttribute("registerProcedure");
+    var protocol = node.getAttribute("protocol");
+    return new RssCloud(domain, port, path, registerProcedure, protocol);
+  }
+}

lib/domain/rss_feed.dart

@@ -1,6 +1,7 @@
 import 'dart:core';
 
 import 'package:webfeedclient/domain/rss_category.dart';
+import 'package:webfeedclient/domain/rss_cloud.dart';
 import 'package:webfeedclient/domain/rss_item.dart';
 import 'package:webfeedclient/util/helpers.dart';
 import 'package:xml/xml.dart';
@@ -14,6 +15,7 @@ class RssFeed {
   final List<RssItem> items;
 
   final RssImage image;
+  final RssCloud cloud;
   final List<RssCategory> categories;
   final String lastBuildDate;
   final String language;
@@ -21,7 +23,7 @@ class RssFeed {
   final String copyright;
 
   RssFeed(this.title, this.description, this.link, this.items,
-      {this.image, this.categories, this.lastBuildDate, this.language, this.generator, this.copyright});
+      {this.image, this.cloud, this.categories, this.lastBuildDate, this.language, this.generator, this.copyright});
 
   factory RssFeed.parse(XmlDocument document) {
     XmlElement channelElement;
@@ -43,6 +45,11 @@ class RssFeed {
       image = new RssImage.parse(channelElement.findElements("image").first);
     } on StateError {}
 
+    RssCloud cloud;
+    try {
+      cloud = new RssCloud.parse(channelElement.findElements("cloud").first);
+    } on StateError {}
+
     List<RssCategory> categories = channelElement.findElements("category").map((element) {
       return new RssCategory.parse(element);
     }).toList();
@@ -54,6 +61,7 @@ class RssFeed {
 
     return new RssFeed(title, description, link, feeds,
         image: image,
+        cloud: cloud,
         categories: categories,
         lastBuildDate: lastBuildDate,
         language: language,

test/rss_test.dart

@@ -32,6 +32,12 @@ void main() {
     expect(feed.image.url, "https://foo.bar.news/logo.gif");
     expect(feed.image.link, "https://foo.bar.news/");
 
+    expect(feed.cloud.domain, "radio.foo.bar.news");
+    expect(feed.cloud.port, "80");
+    expect(feed.cloud.path, "/RPC2");
+    expect(feed.cloud.registerProcedure, "foo.bar.rssPleaseNotify");
+    expect(feed.cloud.protocol, "xml-rpc");
+
     expect(feed.categories.length, 2);
     expect(feed.categories[0].domain, null);
     expect(feed.categories[0].value, "Ipsum");

test/xml/RSS.xml

@@ -9,6 +9,8 @@
             <title>Foo bar News</title>
             <link>https://foo.bar.news/</link>
         </image>
+        <cloud domain="radio.foo.bar.news" port="80" path="/RPC2" registerProcedure="foo.bar.rssPleaseNotify"
+               protocol="xml-rpc"/>
         <category>Ipsum</category>
         <category domain="news">Lorem Ipsum</category>
         <language>en-US</language>
@@ -27,7 +29,9 @@
             <title>Section 1.10.32 of "de Finibus Bonorum et Malorum", written by Cicero in 45 BC</title>
             <link>https://foo.bar.news/2</link>
             <guid>https://foo.bar.news/2?guid</guid>
-            <description>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium</description>
+            <description>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque
+                laudantium
+            </description>
             <category domain="auto">Ipsum</category>
             <pubDate>Tue, 20 Mar 2018 10:00:00 PDT</pubDate>
         </item>