Handle content:encoded in RSS2 feeds

lib/parser/rss2.ex

@@ -58,6 +58,9 @@ defmodule FeedParser.Parser.RSS2 do
         link = text('/item/link/text()', item)
         description = text('/item/description/text()', item)
 
+        # http://purl.org/rss/1.0/modules/content/
+        content = text('/item/content:encoded/text()', item)
+
         pubDate =
           text('/item/pubDate/text()', item)
           |> Timex.parse("{RFC1123}")
@@ -75,7 +78,7 @@ defmodule FeedParser.Parser.RSS2 do
           title: title,
           url: link,
           links: [{link, nil}],
-          content: description,
+          content: content || description,
           date: pubDate,
           creator: creator
         }

test/fixtures/rss2/shadowfacts.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
+  <channel>
+    <title>Shadowfacts</title>
+    <link>https://shadowfacts.net</link>
+    <description></description>
+    <lastBuildDate>Fri, 06 Jan 2023 05:27:48 +0000</lastBuildDate>
+    <item>
+      <title>Rewritten in Rust</title>
+      <link>https://shadowfacts.net/2023/rewritten-in-rust/</link>
+      <category>meta</category>
+      <guid>https://shadowfacts.net/2023/rewritten-in-rust/</guid>
+      <pubDate>Thu, 05 Jan 2023 19:30:42 +0000</pubDate>
+      <content:encoded><![CDATA[<p>So, about six months ago I decided I wanted to rewrite my perfectly-working blog backend in Rust. Why? Because I was bored and wanted an excuse to use Rust more.</p>
+]]></content:encoded>
+    </item>
+  </channel>
+</rss>

test/parser/rss2_test.exs

@@ -36,4 +36,14 @@ defmodule FeedParser.Parser.RSS2Test do
     assert [%FeedParser.Item{} = item] = feed.items
     assert item.creator == "Jim Newell"
   end
+
+  test "parses rss2 item with content:encoded" do
+    data = File.read!("test/fixtures/rss2/shadowfacts.xml")
+    {true, parsed_data} = RSS2.accepts(data, "text/xml")
+    assert {:ok, %FeedParser.Feed{} = feed} = RSS2.parse_feed(parsed_data)
+    assert [%FeedParser.Item{} = item] = feed.items
+
+    assert item.content ==
+             "<p>So, about six months ago I decided I wanted to rewrite my perfectly-working blog backend in Rust. Why? Because I was bored and wanted an excuse to use Rust more.</p>"
+  end
 end