asterisk users - May 2008 - Logical AND (resent due to bounces)

Hi All,

 

I'm trying to figure out why in the below code, the PSTN_NUM variable is
always amended

 

exten => s,n,NoOp(${PSTN_NUM})
exten => s,n,ExecIf( $[ "${PSTN_NUM:0:1}" != "0" ] &
$[
${LEN(${PSTN_NUM})} = 10 ]|Set|PSTN_NUM=001${PSTN_NUM})
exten => s,n,NoOp(${PSTN_NUM})

 

-- Executing [s at macro-setpstncli:8] NoOp("SIP/427-b7d0f518",
"0123456789") in new stack
    -- Executing [s at macro-setpstncli:9] ExecIf("SIP/427-b7d0f518",
" 0 &
1|Set|PSTN_NUM=0010123456789") in new stack
    -- Executing [s at macro-setpstncli:10] NoOp("SIP/427-b7d0f518",
"0010123456789") in new stack

 

It should evaluate PSTN_NUM and add a 001 only if: PSTN_NUM is 10 digits
long and doesn't start with a 0.

 

However, from the debug it's being changed, even though the first test
operator logically is 0.  If seems as though the "&" isnt being
applied.

 

Any ideas?

 

Thanks

 

Adrian

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On Sun, May 25, 2008 at 6:17 AM, Adrian Marsh
<Adrian.Marsh at ubiquisys.com> wrote:
> I'm trying to figure out why in the below code, the PSTN_NUM variable
is
> always amended
>
> exten => s,n,NoOp(${PSTN_NUM})
> exten => s,n,ExecIf( $[ "${PSTN_NUM:0:1}" != "0" ]
& $[ ${LEN(${PSTN_NUM})}
> = 10 ]|Set|PSTN_NUM=001${PSTN_NUM})
> exten => s,n,NoOp(${PSTN_NUM})
>
> -- Executing [s at macro-setpstncli:8] NoOp("SIP/427-b7d0f518",
"0123456789")
> in new stack
>     -- Executing [s at macro-setpstncli:9]
ExecIf("SIP/427-b7d0f518", " 0 &
> 1|Set|PSTN_NUM=0010123456789") in new stack
>     -- Executing [s at macro-setpstncli:10]
NoOp("SIP/427-b7d0f518",
> "0010123456789") in new stack
Remove the space between "ExecIf(" and "$[". It's
causing the first
comparison to evaluate to the string " 0" (space-zero) and not the
digit 0, and a string will always evaluate to "true" if its length is
greater than zero.

-James