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At 01:37 17-09-2001, Matt Loryman wrote:
>Just for your interest this is what i decided to go with for providing a
>pattern match for IP addresses.
>Essentially this means "four groups of one to three numbers between zero and
>nine separated by periods".
>Doesn't cover all eventualities i know, but then again it doesn't stop
>somebody providing a perfectly valid
>but inaccurate IP address!
I'm not sure what you mean by "Doesn't cover all eventualities" - this
accepts all valid IP addresses, but accepts invalid ones as well (as you note).
> <simpleType>
> <restriction base="string">
> <pattern
>value="[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"/>
> </restriction>
> </simpleType>
Another way to do it would be
<simpleType>
<restriction base="string">
<pattern value=
"((0|1[0-9]{1,2}|2([0-4][0-9]?|5[0-5]?|[6-9]))\.){3}(0|1[0-9]{1,2}|2([0-4][0-9]?|5[0-5]?|[6-9]))"
/>
</restriction>
</simpleType>
That restricts each number to 0-255, with no leading zeroes.
-Chris
--
Christopher R. Maden, Principal Consultant, HMM Consulting Int'l, Inc.
DTDs/schemas - conversion - ebooks - publishing - Web - B2B - training
<URL: http://www.hmmci.com/ > <URL: http://crism.maden.org/consulting/ >
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