[Freeswitch-users] Dialplan XML/PCRE Question: Examples 3, 4, 5 from wiki, escaped parens?

[Jason Garland]

It looks like they should not be escaped. Can you fix it on the wiki?

Sent from my iPhone

On Oct 3, 2007, at 6:27 PM, "Michael Collins" <mcollins at fcnetwork.com>  
wrote:

> Guys,
>
> Quick question.  On the wiki I noticed that examples 3, 4, and 5 all  
> use
> escaped parentheses, whereas examples 1 and 2 do not.
>
> Example 3:
> <extension name="Test3">
>  <condition field="destination_number" expression="^00\(.+\)$">
>    <action application="bridge"
> data="sofia/profilename/$1 at 192.168.2.2"/>
>  </condition>
> </extension>
>
> Example 2:
> <extension name="Test2">
>  <condition field="network_addr" expression="^192\.168\.1\.1$"/>
>  <condition field="destination_number" expression="^1(\d+)$">
>    <action application="bridge"
> data="sofia/profilename/$0 at 192.168.2.2"/>
>  </condition>
> </extension>
>
> (Note the expressions following the 'destination_number' fields.)
>
>
> Is this a typo?  I just want to be sure that I am reading this
> correctly.  Seeing escaped parens in a PCRE tells me that the  
> expression
> is attempting to match literal paren characters.  Additionally, using
> ".+" might not be correct here, either.  It means, "match one or  
> more of
> any character, maximal."  If I'm reading the author's intentions
> correctly, in example 3 he wants to capture the digits after the 00,  
> so
> in the case of "00123456789" he wants $1 populated with "123456789".
> Correct me if I'm wrong, but shouldn't the condition and expression  
> look
> like this?
>
> <condition field="destination_number" expression="^00(\d+)$">
>
> Here the expression is saying, "Match a string of all digits beginning
> with two zeroes; capture the digits following the two zeroes and store
> them in $1."
>
> I didn't want to change the documentation without a second opinion.
> (FYI, I can't test it right now b/c I don't have a running FS system  
> at
> the moment...)
>
> Thanks,
> MC
>
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