Reg ex

[Stunner01225]

Hello.
I am writing a piece of server side code that uses Regular expressions (groan). I have been trying to get it right for days now.
I receive Input in the form of strings formatted as such "0.0" , "0.0.0" ,"0.0.0.0"
I need an expression that will be true for the first("0.0") but not any others. the expression also has to pass "10.0" as true.
I have been working along the lines of \d+\.\d+ but I cannot get it to work.
Does anyone have any ideas?

Thanks in advance for any help given.

 

[ca8msm]

Try the Regulator at:

http://regex.osherove.com/

It may be able to provide you with some examples.

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[Stunner01225]

I wish I could download it, but security is too high on my workstation. I will try to get hold of it but in the meantime im afraid I will need some more suggestions as I only have vis studio 2k3 in front of me at the moment.

 

[Stunner01225]

I Think all my expressions are passing 0.0.0 as true becuase it finds 0.0 in it once. Anybody know how to fix it I need an exact match and my RegEx are not my greatest.

 

[cappmgr]

^(\d*[0])(\.[0]{1})$
first group zero or more digits and a zero must follow
second group .0 only

what I have tested
Enter string: 0.0
good string 0.0
Enter string: 00.0
good string 00.0
Enter string: 10.0
good string 10.0
Enter string: 0
bad string 0
Enter string: 0.0.0
bad string 0.0.0
Enter string: 0.0.0
bad string 0.0.0.0
Enter string: 1.0
bad string 1.0
Enter string: 0
bad string 0

If 00.0 is not allowed change to this
^([1-9]*[0])(\.[0]{1})$

Marty

 

[jby1]

Check this site, may have something ...

http://www.regexlib.com/

 

[Stunner01225]

Thank you for all the help you have given me.