[Telepathy] New ContactInfo interface based on vCards

Simon McVittie simon.mcvittie at collabora.co.uk
Tue Nov 25 03:26:53 PST 2008

On Tue, 25 Nov 2008 at 11:08:00 +0000, Dafydd Harries wrote:
> Ar 20/11/2008 am 12:09, ysgrifennodd Will Thompson:
> > (Contrast with the old interface, which
> > represented vCards as... a string containing a vCard. :-))

No, it represented vCards as a string containing XML structured
according to an abandoned, expired RFC draft, in which each XML element
had the same name as a vCard concept, except CTRY which was inexplicably
renamed to COUNTRY (this is the same XML used by the XMPP 'vcard-temp'
protocol, which has unfortunately turned out to be anything but temporary).

A string containing a vCard would have been a considerable improvement.

> > While vCard
> > is kind of hairy and suboptimal, it's widely used (both XEPs relating to
> > contact info are based on vCard) and there's no point in defining
> > another format only to have to map to and from the vCard semantics in
> > every CM.
> If vCards are widely used, perhaps sending and receiving them as strings is
> not such a bad thing. Otherwise software that already supports them has to
> be modified to support our new interface, or has to undo the translation that
> the connection manager does. Essentially, we *have* defined another format,
> it's just not a text one, and software will have to do lots of mapping back
> and forth.

I believe the idea was to avoid requiring every connection manager
to be able to compose and parse arbitrary vCards; with a structured D-Bus API,
the CMs have to be able to map their own semantics to vCard, but they don't
have to understand the syntax.


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