[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

RE: Regular expression for URI matching

  • From: Nicolas LEHUEN <nicolas.lehuen@u...>
  • To: 'Michael Brennan' <Michael_Brennan@a...>,"'xml-dev@l...'" <xml-dev@l...>
  • Date: Fri, 24 Aug 2001 09:36:10 +0200

uri regular expression
The problem is when you have a developer that produces malformed content,
then compares development tool A and development tool B to decide which one
he'll buy. Development tool A, being more strict, rejects the developer's
content. Development tool B does not. So the developer buys the B product.
This is a phenomenon that keeps marketers and product managers awake at
night.

Maybe the solution is to educate the developer himself ?

Regards,
Nicolas

>-----Message d'origine-----
>De : Michael Brennan [mailto:Michael_Brennan@a...]
>Envoyé : jeudi 23 août 2001 21:15
>À : xml-dev@l...
>Objet : RE: Regular expression for URI matching
>
>
>Thanks for passing this along (although that regular 
>expression makes my
>brain hurt ;)). 
>
>It's too bad, though, that Altova is completely removing it. I 
>understand
>the reasoning. We've all heard the admonition: be strict in 
>what you create,
>be forgiving in what you accept. Unfortunately, the 
>overwhelming majority of
>developers follow the path of least resistance. Forgiving web 
>browsers is
>one reason there is so much buggy, malformed content on the 
>web. The typical
>web developer writes a web page, brings it up in the browser, and if it
>displays, they are done. If web browsers were more strict, 
>developers would
>produce more conformant content.
>
>Maybe Altova should just add an optional feature that lets a 
>user explicitly
>disable the URI checking. That way, at least, they could 
>accomodate their
>customers without inadvertently leading naive developers down 
>the path of
>bad practice.
>
>> -----Original Message-----
>> From: John Cowan [mailto:cowan@m...]
>> Sent: Wednesday, August 22, 2001 7:15 PM
>> To: xml-dev@l...
>> Subject: Regular expression for URI matching
>> 
>> 
>> Alexander Falk of Altova, the XML Spy people, posted the following to
>> an internal W3C mailing list.  With his permission, I am reposting it
>> here so that it will be archived.  Anyone may use it, but this
>> information is provided "as-is" with no warranties whatsoever 
>> regarding
>> the correctness of the information.
>> 
>> ----- Forwarded message from Alexander Falk -----
>> 
>> This is the Regular Expression (RE) we originally used for the anyURI
>> dataype within our XML Spy product up until 4.0b2:
>> 
>> 	
>> (([a-zA-Z][0-9a-zA-Z+\\-\\.]*:)?/{0,2}[0-9a-zA-Z;/?:@&=+$\\.\\
>> -_!~*'()%]+)?(
>> #[0-9a-zA-Z;/?:@&=+$\\.\\-_!~*'()%]+)?
>> 
>> It was constructed according to the BNF grammar given in RFC 2396
>> (http://www.ietf.org/rfc/rfc2396.txt) and we used this RE to validate
>> elements and attributes whose datatype was anyURI.
>> 
>> However, we've found that (a) many customers actually use 
>> illegal URIs in
>> their documents happily, (b) XML Schema Part 2
>> (http://www.w3.org/TR/xmlschema-2/#anyURI) doesn't require 
>> any validation of
>> the contents of the anyURI dataype, and (c) most customers 
>> don't want us to
>> validate stronger than what other processors are doing.
>> 
>> Therefore, we are currently eliminating the anyURI checking [...]
>
>-----------------------------------------------------------------
>The xml-dev list is sponsored by XML.org <http://www.xml.org>, an
>initiative of OASIS <http://www.oasis-open.org>
>
>The list archives are at http://lists.xml.org/archives/xml-dev/
>
>To subscribe or unsubscribe from this elist use the subscription
>manager: <http://lists.xml.org/ob/adm.pl>
>

PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
 

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.


Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.