[Freeswitch-users] Need help on regex

[Steven Ayre]

Actually, I've just realised there is a way:

^(?|\d{3}(0\d{4})\d{2}$|^(\d{3}[1-9]\d{6}))$

The (?| ) bracket resets the numbering for each alternative, so the
first set of brackets in each alternative both point to $1.

-Steve


On 25 October 2010 09:00, Steven Ayre <steveayre at gmail.com> wrote:
> Yes, \d\d\d and \d{3} are equivalent... use whichever you prefer.
>
> You can have both in a single regex, but since they won't be matched
> within the same brackets they'll not be in the same variable.
>
> ^\d{3}(0\d{4})\d{2}$|^(\d{3}[1-9]\d{6})$
> with a zero would be in $1, $2 will be null
> and without a zero would be in $2, $1 will be null
>
> So I can't think of a way to handle both in the same extension... You
> could have both transfer to a third extension where the call is
> handled though if you want to avoid duplicated actions in the
> dialplan.
>
> Unless FS supports named captures:
> ^\d{3}(?<num>0\d{4})\d{2}$|^(?<num>\d{3}[1-9]\d{6})$
>
> In which case it's be stored in $num (?) in both cases, but I don't
> know whether FS's implementation supports named capturing...
>
> -Steve
>
>
> On 25 October 2010 02:39, mazilo <Nabble at slickdeals.endjunk.com> wrote:
>>
>>
>> Steven Ayre wrote:
>>>
>>> <extension name="zero">
>>>   <condition field="destination_number"
>>> expression="^\d\d\d(0\d\d\d\d)\d\d$">
>>>     <!-- $1 holds the number -->
>>>   </condition>
>>> </extension>
>>> <extension name="nonzero">
>>>   <condition field="destination_number"
>>> expression="^(\d\d\d[123456789]\d\d\d\d\d\d)$">
>>>     <!-- $1 holds the number -->
>>>   </condition>
>>> </extension>
>>>
>>> Steve on iPhone
>> Steven, thank you for your quick response. I reckon the \d\d\d is the same
>> as \d{3} such that above expressions can be rewritten as
>> expression="^\d{3}(0\d{4})\d{2}$" and expression="^(\d{3}[1-9]\d{6})$",
>> respectively. If so, is it possible to combine the two regex expressions
>> into a single expression using pipe within one dialplan? I tried
>> expression="^\d{3}(0\d{4})\d{2}$|^(\d{3}[1-9]\d{6})$" and it only works for
>> the 1st regex while the 2nd regex gives a null.
>>
>> -----
>> don't and stop are the ONLY two 4-letter words considered offensive to men,
>> but not when used together.
>> --
>> View this message in context: http://freeswitch-users.2379917.n2.nabble.com/Need-help-on-regex-tp5668666p5669081.html
>> Sent from the freeswitch-users mailing list archive at Nabble.com.
>>
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>