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3.1.1 (August 4th, 2012)

Bugfix release. This release is special in that it mainly contains code by other people. Thanks guys!

  • Fix bug that could result in a long long overflow (Ole André Vadla Ravnås)
  • Make SINGLETON thread safe (Alen Zhou)
  • Updated .gitattributes to say that tests are binary files (Phill Baker)
  • Fix string formatter warning in new XCode (Andy Brett)
  • Fix issue that could lead to "bad access" or zombie errors (jonkean)
  • Update links to API docs

3.1 (March 26th, 2012)

Automatic Reference Counting

3.1 requires Xcode 4.2 to build, because previous versions did not have ARC support. If you can't use Xcode 4.2, or for some reason can't use ARC, you need to stick with version 3.0.

To make this move simpler I decided to move to 64-bit only & remove instance variables for properties.


  • Added an optional comparator that is used when sorting keys.
  • Be more memory-efficient when parsing long strings containing escaped characters.
  • Add a Workspace that includes the sample projects, for ease of browsing.
  • Report error for numbers with exponents outside range of -128 to 127.

3.0 (June 18th, 2011)

JSON Stream Support

We now support parsing of documents split into several NSData chunks, like those returned by NSURLConnection. This means you can start parsing a JSON document before it is fully downloaded. Depending how you configure the delegates you can chose to have the entire document delivered to your process when it's finished parsing, or delivered bit-by-bit as records on a particular level finishes downloading. For more details see SBJsonStreamParser and SBJsonStreamParserAdapter in the API docs.

There is also support for writing to JSON streams. This means you can write huge JSON documents to disk, or an HTTP destination, without having to hold the entire structure in memory. You can use this to generate a stream of tick data for a stock trading simulation, for example. For more information see SBJsonStreamWriter in the API docs.

Parse and write UTF8-encoded NSData

The internals of SBJsonParser and SBJsonWriter have been rewritten to be NSData based. It is no longer necessary to convert data returned by NSURLConnection into an NSString before feeding it to the parser. The old NSString-oriented API methods still exists, but now converts their inputs to NSData objects and delegates to the new methods.

Project renamed to SBJson

The project was renamed to avoid clashing with Apple's private JSON.framework. (And to make it easier to Google for.)

  • If you copy the classes into your project then all you need to update is to change the header inclusion from #import "JSON.h" to #import "SBJson.h".
  • If you link to the library rather than copy the classes you have to change the library you link to. On the Mac JSON.framework became SBJson.framework. On iOS libjson.a became libsbjson-ios.a. In both cases you now have to #import <SBJson/SBJson.h> in your code.

API documentation integrated with Xcode

The script allows you to generate API documentation from the source and install it into Xcode, so it's always at your fingertips. (This script requires Doxygen to be installed.) After running the script from the top-level directory, open Xcode's documentation window and search for SBJson. (You might have to close and re-open Xcode for the changes to take effect.)

Example Projects

These can be found in the Examples folder in the distribution.

  • TweetStream: An exampleshowing how to use the new streaming functionality to interact with Twitter's multi-document streams. This also shows how to link to the iOS static lib rather than having to copy the classes into your project.
  • DisplayPretty: A small Mac example project showing how to link to an external JSON framework rather than copying the sources into your project. This is a fully functional (though simplistic) application that takes JSON input from a text field and presents it nicely formatted into another text field.