.xo bundles (was Re: #1803 HIGH Trial-2: Add Chat activity to builds)

[Bert Freudenberg]

On Jul 4, 2007, at 20:39 , Tomeu Vizoso wrote:

> On Wed, 2007-07-04 at 14:18 -0400, John (J5) Palmieri wrote:
>> BTW We now have an official registered mime type "vnd.olpc-sugar"  
>> which
>> specifies "XO" as the magic key to identify the mime type.  At some
>> point the PK in the zip header will change to XO.
>
> Hmm, I was thinking about doing something similar to what OpenDocument
> does by storing a mimetype file uncompressed on the root of the  
> archive.
>
> In this way we can sniff the mime type while retaining full
> compatibility with zip files. Also, we can sniff for different  
> kinds of
> bundles, if we reserve vnd.olpc-sugar for activity bundles.

I like that much better than obscuring the nature of a bundle by  
patching magic bytes.

- Bert -