Re: [Boost-users] Validating file names using regex

From: Eric Niebler (eric_at_[hidden])
Date: 2006-04-13 13:08:21

Jean-Sebastien Vachon wrote:
> On Thu, 13 Apr 2006 10:59:54 +0100, John Maddock wrote:
> 
>>> ((((|(^\\\\[^\\;:\'\"<>]+\\[^\\]+\\)))))(((([^\\;:\'\"\<\>]+)\\)*)*)((([^\\;:\'\"<>]*))(\.?([^\\:;\'\"<>]+)))?)
>> Is the (^([a-z]:\\?) part supposed to match "c:" ?  If so it won't because 
>> of the literal "?".
>>
>> There are several possible candidates at http://regexlib.com BTW as well.
>>
>> John.
> 
> In the (^([a-z]:\\?) I want to make the last \ optionnal not to have
> a literal ?.
> 
> Should I change this to: "(^([a-z]:\\\?)" ?

One more slash ought to do it: "(^([a-z]:\\\\?)". Think of it this way: 
write the pattern as you would in perl. Then double every backslash.

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com