April 06, 2006

Atom 1.0 parser for Ruby

I've been looking for a Ruby library for parsing Atom 1.0. The only one I could find was FeedTools. Unfortunately, it's intended to be a universal feed-parsing library and not quite what I need.

As a result, I decided to build my own. The project is hosted at RubyForge and the source code is available under the MIT license.

It is still in its early stages, so don't expect much at this point. So far, it understands most atom:* elements and attributes but doesn't perform validation.

The interface is fairly simple. For example, you can do this:


require 'atom'
require 'net/http'
require 'uri'

str = Net::HTTP::get(URI::parse('http://blog.ning.com/atom.xml'))
feed = Atom::Feed.new(str)

feed.entries.each { |entry|
puts "'#{entry.title}' by #{entry.authors.first.name} on #{entry.published.strftime('%m/%d/%Y')}"
}


Give it a try, play with it. Comments are welcome!

Labels:

39 Comments:

Blogger mcdtracy said...

Pretty easy to get started...

to install I downloaded the "gem" file and installed with:

$ gem install atom

run in the directory of the download.

I printed out the contents too with this code:

require 'atom'
require 'net/http'
require 'uri'

str = Net::HTTP::get(URI::parse('http://blog.ning.com/atom.xml'))
feed = Atom::Feed.new(str)

feed.entries.each { |entry|
puts "-----------------------------------------------------------------------------------------"
puts "'#{entry.title}' by #{entry.authors.first.name} on #{entry.published.strftime('%m/%d/%Y')}
puts "-----------------------------------------------------------------------------------------"
puts "'#{entry.summary}'"
puts "-----------------------------------------------------------------------------------------"
puts "'#{entry.content.value}'"
# or print the entire entry contents with the next line uncommented:
# p entry
}

April 12, 2006 6:19 PM  
Blogger cnruby said...

How to get Link href value?

February 04, 2007 3:29 PM  
Blogger cnruby said...

entry.links[0]

February 04, 2007 3:47 PM  
Blogger Tim Morgan said...

This is exactly what I was looking for! This, combined with the standard Ruby RSS parser, should give me everything I need to grab feeds I think. You rock!

August 07, 2007 8:09 AM  
Blogger iqbal said...

is it possible to generate Google apps atom feed?

If yes then what kind changes i nned to do with this library or need to embed any other library with this.

December 12, 2007 10:42 PM  
Blogger iqbal said...

This comment has been removed by the author.

December 12, 2007 10:43 PM  
Blogger tbeauvais said...

Hi, is there a way to get at extension elements in the Atom feed? For example <openSearch:totalResults>

July 11, 2008 1:00 PM  
Blogger Ashish said...

How do I get the value of src from the following?
entry....
.
.
.
content type="text/plain"
xml:lang="en"
src="http://...."
/content
/entry
I tried entry.content.src, entry.content['src']. But both didn't work

November 03, 2008 5:54 AM  
Blogger Martin said...

entry.content.src should work. Can you send me your complete test case so that I can debug it here?

November 03, 2008 8:17 AM  
Blogger Ashish said...

Hi Martin,
I did 'inspect' on the feed returned by Atom. The value of src goes as the value of href of the third link in the entry. Not sure why that happens but am able to access src using entry.links[2].href

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