appnoe / feedkit

An RSS, Atom and JSON Feed parser written in Swift

Features

• Atom
• RSS 0.90, 0.91, 1.00, 2.00
• JSON
• Namespaces
  • Dublin Core
  • Syndication
  • Content
  • Media RSS
  • iTunes Podcasting Tags
• Documentation
• Unit Test Coverage

Requirements

Installation >> instructions <<

Usage

Build a URL pointing to an RSS, Atom or JSON Feed.

let feedURL = URL(string: "http://images.apple.com/main/rss/hotnews/hotnews.rss")!

Get an instance of FeedParser

let parser = FeedParser(URL: feedURL) // or FeedParser(data: data)

Then call parse or parseAsync to start parsing the feed...

A common scenario in UI environments would be parsing a feed asynchronously from a user initiated action, such as the touch of a button. e.g.

// Parse asynchronously, not to block the UI.
parser.parseAsync(queue: DispatchQueue.global(qos: .userInitiated)) { (result) in
    // Do your thing, then back to the Main thread
    DispatchQueue.main.async {
        // ..and update the UI
    }
}

Remember, you are responsible to manually bring the result closure to whichever queue is apropriate. Usually to the Main thread, for UI apps, by calling DispatchQueue.main.async .

Alternatively, you can also parse synchronously.

let result = parser.parse()

Parse Result

Whichever the case, if parsing succeeds you should now have a Strongly Typed Model of an RSS, Atom or JSON Feed.

switch result {
case let .atom(feed):       // Atom Syndication Format Feed Model
case let .rss(feed):        // Really Simple Syndication Feed Model
case let .json(feed):       // JSON Feed Model
case let .failure(error):   
}

Parse Success

You can check if a Feed was successfully parsed or not.

result.isSuccess    // If parsing was a success
result.isFailure    // If parsing failed
result.error        // An error, if any

Model Preview

Safely bind a feed of your choosing:

You may find the example bellow useful, if you're dealing with only a single type of feed.

guard let feed = result.rssFeed, result.isSuccess else {
    print(result.error)
    return
}

Then go through it's properties:

The RSS and Atom feed Models are rather extensive throughout the supported namespaces. These are just a preview of what's available.

RSS

feed.title
feed.link
feed.description
feed.language
feed.copyright
feed.managingEditor
feed.webMaster
feed.pubDate
feed.lastBuildDate
feed.categories
feed.generator
feed.docs
feed.cloud
feed.rating
feed.ttl
feed.image
feed.textInput
feed.skipHours
feed.skipDays
//...
feed.dublinCore
feed.syndication
feed.iTunes
// ...

let item = feed.items?.first

item?.title
item?.link
item?.description
item?.author
item?.categories
item?.comments
item?.enclosure
item?.guid
item?.pubDate
item?.source
//...
item?.dublinCore
item?.content
item?.iTunes
item?.media
// ...

Refer to the documentation for the complete model properties and descriptions

Atom

feed.title
feed.subtitle
feed.links
feed.updated
feed.authors
feed.contributors
feed.id
feed.generator
feed.icon
feed.logo
feed.rights
// ...

let entry = feed.entries?.first

entry?.title
entry?.summary
entry?.authors
entry?.contributors
entry?.links
entry?.updated
entry?.categories
entry?.id
entry?.content
entry?.published
entry?.source
entry?.rights
// ...

Refer to the documentation for the complete model properties and descriptions

JSON

feed.version
feed.title
feed.homePageURL
feed.feedUrl
feed.description
feed.userComment
feed.nextUrl
feed.icon
feed.favicon
feed.author
feed.expired
feed.hubs
feed.extensions
// ...

let item = feed.items?.first

item?.id
item?.url
item?.externalUrl
item?.title
item?.contentText
item?.contentHtml
item?.summary
item?.image
item?.bannerImage
item?.datePublished
item?.dateModified
item?.author
item?.url
item?.tags
item?.attachments
item?.extensions
// ...

Refer to the documentation for the complete model properties and descriptions

License

FeedKit is released under the MIT license. See LICENSE for details.