xtuaok / feed_searcher

Search RSS feed URLs from the given URL

FeedSearcher

Search RSS feed URLs from the given URL.

Installation

$ gem install feed_searcher

Usage

require "feed_searcher"
FeedSearcher.search("https://github.com/r7kamura/feed_searcher")
#=> ["https://github.com/r7kamura/feed_searcher/commits/master.atom"]

Internal

Let me explain how FeedSearcher works along its execution sequence.

1. Fetches the HTML source of the given URL
2. Finds link elements (represented as XPath format)
3. Extracts URLs from the elements via its href attribute
4. Converts to absolute path if it is relative path

FeedSearcher finds link elements matcing following XPath patterns.

• //link[@rel='alternate'][@type='application/atom+xml']
• //link[@rel='alternate'][@type='application/rdf+xml']
• //link[@rel='alternate'][@type='application/rss+xml']