[Zope] How to check if a string contains some characters??

[Tino Wildenhain]

Hi,

in pure python you can also write:
# -------------------------------------------------
import re

if re.search(r"[^A-Za-z0-9\.\-_]",string_name):
	raise Exception("illegal character here.")

# -------------------------------------------------

However this is untested. But you get the idea ;)
re is certainly faster then in-loops.

Regards
Tino

"Spicklemire, Jerry" wrote:
> 
> Marcello asked:
> 
> > Is there a simple way to check if a string contain only this values:
> > "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_"
> > and otherwise raise an error?
> 
> If you have a string you want to check, with the name "string_name":
> 
> <dtml-call "REQUEST.set('char_invalid', 'no')">
> <dtml-let
> chars_valid="'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789
> .-_'">
>  <dtml-while "char_valid == 'no'">
>   <dtml-in string_name>
>    <dtml-if "sequence-item !in chars_valid">
>     <dtml-call "REQUEST.set('char_invalid', 'yes')">
>    </dtml-if>
>   </dtml-in>
>  </dtml-while>
> </dtml-let>
> <dtml-if "char_invalid == 'no'">
>  <dtml-call "your raise_error_code">
> </dtml-if>
> 
> This may not look as simple as you want, but in pure Python,
> (without alls the <dtml-stuff > this would be:
> 
> string_valid = 'yes'
> for char in string_name :
>         if char !in
> 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_' :
>                 string_valid = 'no'
>                 break
> 
> if string_valid == 'no' :
>         (run your "raise error" code here)
> 
> Later,
> Jerry S.
> 
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