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Question

regex for four-digit numbers (or "default")

Answer 1

+6 A:

This should do it:

/^(default|\d{4}(,\d{4})*)$/

That's

^         start of string
(         start group
 default  literal "default"
 |        or
 \d{4}    digit repeated 4 times
  (       start group
   ,      literal ","
   \d{4}  four digits
  )       end group
 *        repeat 0 or more times
)         end group
$         end of string

Greg 2009-11-09 18:44:23

Beat me to it by 15 seconds. ;-)

Sean Vieira 2009-11-09 18:46:41

it does match anything not even 1234not even 1234,5678

Subhasis 2009-11-09 18:54:15

Works for me at this regex test page: http://www.regular-expressions.info/javascriptexample.html (Note: I had to remove the slashes at the beginning and the end.) Could there be some other reason that things aren't working for you? Namespace problems, perhaps?

Don Kirkby 2009-11-09 19:05:26

For XML Schema you would have to remove the anchors (`^` and `$`) as well; XSD regexes are implicitly anchored, so those metacharacters aren't supported. But that leaves `default|\d{4}(,\d{4})*`, which the OP already said didn't work, so I don't know what else to suggest.

Alan Moore 2009-11-09 20:01:18

@Alan Moore: I was testing it in a console .NET App. I finally need to move it in XSD.

Subhasis 2009-11-10 07:38:35

@Don Kirby: You are right. It works great in the site you mentioned. I probably have to look into my app.@Greg: Thanks for your answer.

Subhasis 2009-11-10 07:42:29

Answer 2

A:

Based on replies to the comments, it sounds like you need a regular expression for a pattern restriction in an XSD. According to the XSD spec, this should work:

default|[0-9]{4}(,[0-9]{4})*

jamessan 2009-11-09 19:22:10

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regex for four-digit numbers (or "default")

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