[Fwd: ASK: URI validation service]

[Dan Brickley-2]

Fwd'ing to uri@... from the SW IG list. Can anyone here advise? It
would also be interesting to hear about the state of URI validation
libraries, even if they're not currently exposed as Web Services.

cheers,

Dan

-------- Original Message --------
Subject: ASK: URI validation service
Resent-Date: Tue, 23 Jun 2009 15:08:52 +0000
Resent-From: semantic-web@...
Date: Tue, 23 Jun 2009 17:08:06 +0200
From: Michael Schneider <schneid@...>
To: <semantic-web@...>

Hi!

Is there any online URI/IRI validation service, which takes a string and
reliably tells me whether the string matches the specification of a URI
or IRI according to RFC 3986 or RFC 3987, respectively?

Cheers,
Michael

--
Dipl.-Inform. Michael Schneider
Research Scientist, Dept. Information Process Engineering (IPE)
Tel  : [phone]
Fax  : [phone]
Email: michael.schneider@...
WWW  : http://www.fzi.de/michael.schneider
=======================================================================
FZI Forschungszentrum Informatik an der Universität Karlsruhe
Haid-und-Neu-Str. 10-14, D-76131 Karlsruhe
Tel.: [phone], Fax: [phone]
Stiftung des bürgerlichen Rechts, Az 14-0563.1, RP Karlsruhe
Vorstand: Prof. Dr.-Ing. Rüdiger Dillmann, Dipl. Wi.-Ing. Michael Flor,
Prof. Dr. Dr. h.c. Wolffried Stucky, Prof. Dr. Rudi Studer
Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus
=======================================================================

[Anne van Kesteren-2]

On Tue, 23 Jun 2009 17:23:24 +0200, Dan Brickley <danbri@...> wrote:
> Fwd'ing to uri@... from the SW IG list. Can anyone here advise? It  
> would also be interesting to hear about the state of URI validation  
> libraries, even if they're not currently exposed as Web Services.

Validator.nu does IRI reference validation for attributes that take them as value.


--
Anne van Kesteren
http://annevankesteren.nl/

[Erik Wilde-3]

Anne van Kesteren wrote:
> On Tue, 23 Jun 2009 17:23:24 +0200, Dan Brickley <danbri@...> wrote:
>> Fwd'ing to uri@... from the SW IG list. Can anyone here advise? It  
>> would also be interesting to hear about the state of URI validation  
>> libraries, even if they're not currently exposed as Web Services.
> Validator.nu does IRI reference validation for attributes that take them as value.

http://uriparser.sourceforge.net/ and other URI parser implementations
are an option. submitting a URI would be easy, but the question is what
to return: just a (URI|IRI|invalid) response, or some sort of parsing
result that can be used to process the URI? the latter option might be
interesting beyond mere validation, but then again URI parsing is such a
low-level task that in most cases, people will probably prefer to have
it as a local library, instead of using a web service.

cheers,

erik wilde   tel:[phone] - fax:[phone]
        dret@...  -  http://dret.net/netdret
        UC Berkeley - School of Information (ISchool)

["Martin J. Dürst"]

On 2009/06/24 0:40, Erik Wilde wrote:

> Anne van Kesteren wrote:
>> On Tue, 23 Jun 2009 17:23:24 +0200, Dan Brickley <danbri@...>
>> wrote:
>>> Fwd'ing to uri@... from the SW IG list. Can anyone here advise? It
>>> would also be interesting to hear about the state of URI validation
>>> libraries, even if they're not currently exposed as Web Services.
>> Validator.nu does IRI reference validation for attributes that take
>> them as value.
>
> http://uriparser.sourceforge.net/ and other URI parser implementations
> are an option. submitting a URI would be easy, but the question is what
> to return: just a (URI|IRI|invalid) response, or some sort of parsing
> result that can be used to process the URI? the latter option might be
> interesting beyond mere validation, but then again URI parsing is such a
> low-level task that in most cases, people will probably prefer to have
> it as a local library, instead of using a web service.

What is more, the general grammar for URIs (or IRIs) is extremely loose,
because it has to accommodate many different schemes. Validating by
scheme can be more strict, but this means that data for each scheme has
to be collected; this data may not be available easily and uniformly.

Regards,   Martin.

--
#-# Martin J. Dürst, Professor, Aoyama Gakuin University
#-# http://www.sw.it.aoyama.ac.jp   mailto:duerst@...