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Re: [widgets] Zip vs GZip Tar

From: Gregg Tavares <gman@google.com>
Date: Wed, 28 Apr 2010 15:14:59 -0700
Message-ID: <u2jde4bd3191004281514rfdd8b9bdsed6a5fb8f223209e@mail.gmail.com>
To: timeless <timeless@gmail.com>
Cc: Web Applications Working Group WG <public-webapps@w3.org>
On Wed, Apr 28, 2010 at 2:28 PM, timeless <timeless@gmail.com> wrote:

> On Wed, Apr 28, 2010 at 7:48 PM, Gregg Tavares <gman@google.com> wrote:
> > I'm sorry if I'm not familiar with all the details of how the widgets
> spec
> > is going but the specs encourage comment so I'm commenting :-)
> >
> > It seems like widgets have 2 uses
> >
> > #1) As a way to package an HTML5 app that can be downloaded similar to a
> > native
> >     executable
> >
> > #2) As a way to package an HTML5 app that can be embedded in a page but
> > easily
> >     distributed as a single file (ie, do what Flash / Silverlight /
> Unity3D
> >     currently do except based in HTML5 / EMCAScript)
> >
> > Use #2 would benefit tremendously if like Flash / Sliverlight / Unity3D
> the
> > application could start as soon as it has enough info to start as
> supposed
> > to
> > having to wait for the entire package to download.
> >
> > To accomplish that goal requires using a format that can be streamed.
> > Zip is not such a format. Zip files store their table of contents at the
> end
> > of
> > the file. They can have multiple table of contents but only the last one
> > found is valid. That means the entire file has to be downloaded before a
> UA
> > can
> > correctly figure out what's in the file.
> >
>
> That's incorrect. Zip is streamable. Go read the format.
>

I have read the format in extreme detail as well as implemented plugins
that support asset streaming for Firefox, Safari, IE and Chrome.

It's not streamable.
Received on Wednesday, 28 April 2010 22:15:29 GMT

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