Representing IP addresses in XML Schema

[Roger L. Costello]

Hi Folks,

I am trying to create an IP address datatype using the latest xml schema
spec, and am having difficulty seeing the solution.  My initial attempt
was:

<datatype name="IP" source="string">
   <pattern value="\d{3}.\d{3}.\d{3}.\d{3}"/>
</datatype>

However, this is not satisfactory - it allows each field in the IP to
have values from 000-999.  I want to restrict the possible values to:
[0-255].[0-255].[0-255].[0-255]

Any thoughts on how to do this?  /Roger


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