wayland implementation conformance

[Casey Dahlin]

On Thu, Jan 27, 2011 at 11:35:17AM -0500, Jeremy Volkman wrote:
> Sure. xmllint, which comes with libxml2 (libxml2-utils in Ubuntu), supports
> RELAX NG these days.
> 
> scout:protocol jvolkman$ xmllint --noout --relaxng schema.xml wayland.xml
> wayland.xml validates
> 
> -Jeremy
> 

The only issue is there's no way to link a relaxng schema from the file,
so there's no sure path to find the documentation given the file itself.
I think a DTD in addition to the schema would solve that.

--CJD

> 2011/1/27 Kristian Høgsberg <krh at bitplanet.net>
> 
> > On Wed, Jan 26, 2011 at 5:09 PM, Jeremy Volkman <jvolkman at gmail.com>
> > wrote:
> > > Here's my stab at a Wayland schema written in RELAX NG. It can be
> > converted
> > > to a W3C schema if preferred, but RELAX NG provides more functionality.
> > For
> > > example, the schema is able to require an "interface" attribute for an
> > > argument only if the argument type is "object" or "new_id".
> > > -Jeremy
> >
> > Is there a tool that can verify the protocol against the schema?
> >
> > Kristian
> >
> > > 2011/1/26 Kristian Høgsberg <krh at bitplanet.net>
> > >>
> > >> 2011/1/26 Casey Dahlin <cdahlin at redhat.com>:
> > >> > On Wed, Jan 26, 2011 at 01:40:25PM -0500, Kristian Høgsberg wrote:
> > >> >> 2011/1/26 Josh Leverette <coder543 at gmail.com>:
> > >> >> > I'm not certain, but I think there could eventually be enough
> > >> >> > variation for that to be needed. However, even if there isn't,
> > parsing an
> > >> >> > XML file might be a better long term solution that weakly linked
> > functions
> > >> >> > and things like that. Perhaps we could modify his idea about an XML
> > profile
> > >> >> > structure to allow you to delve into each supported profile and
> > find out
> > >> >> > more about what it supports without having to hard code acceptable
> > version
> > >> >> > numbers into a program. The only problem I foresee is how to modify
> > the XML
> > >> >> > file. It's not going to be the end user's job.. but if any program
> > could
> > >> >> > modify it there needs to be a fallback system to prevent a rogue
> > program
> > >> >> > from deleting other profile advertisements written in by the system
> > or other
> > >> >> > programs.
> > >> >>
> > >> >> The XML file isn't used at runtime.  It's just a convenient mechanism
> > >> >> to describe the interface.  The way it works is that a client
> > connects
> > >> >> to the server and the server will then advertise all the global
> > >> >> objects available by giving their object id, interface name and
> > >> >> version.  A client can then look through the list to see what's
> > >> >> available and adjust its behaviour accordingly.
> > >> >>
> > >> >> Kristian
> > >> >>
> > >> >
> > >> > Does the XML file have a particular schema?
> > >> >
> > >> > It might be useful to install it in /usr/share so it could be used by
> > >> > tools. I'm thinking mostly of a d-feet style introspection tool for
> > the
> > >> > Wayland protocol (we could even go as far as dynamically adaptable
> > >> > bindings for languages like Ruby or Python).
> > >>
> > >> I didn't actually write a schema for it, but if somebody with the
> > >> right XML-fu could do that that would be nice.  It's a good point that
> > >> dynamic languages probably just want to parse the XML directly and
> > >> generate the bindings on the fly and for that we would need to install
> > >> the XML.  As for introspection/logging/xscope, that's built into the
> > >> server side library: set WAYLAND_DEBUG=1 and watch the requests and
> > >> events fly by.
> > >>
> > >> Kristian
> > >> _______________________________________________
> > >> wayland-devel mailing list
> > >> wayland-devel at lists.freedesktop.org
> > >> http://lists.freedesktop.org/mailman/listinfo/wayland-devel
> > >
> > >
> > > _______________________________________________
> > > wayland-devel mailing list
> > > wayland-devel at lists.freedesktop.org
> > > http://lists.freedesktop.org/mailman/listinfo/wayland-devel
> > >
> > >
> >

> _______________________________________________
> wayland-devel mailing list
> wayland-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/wayland-devel