Re: [asterisk-users] Cut off last character of EXTEN
On Tuesday 20 August 2013, Pat Collins wrote:
> From: asterisk-users-boun...@lists.digium.com
> [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Jonas Kellens
> Sent: Tuesday, August 20, 2013 4:29 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [asterisk-users] Cut off last character of EXTEN
>
>
>
> Hello,
>
> how can I cut off the last character of the EXTEN-variable with variating
> length ?
>
> So I have :
>
> 112233#
> 123#
> 123456789#
>
> I want to cut off the last character.
>
> ${EXTEN:-1} gives me #, but that is the character I want to cut off.
>
>
>
> Kind regards,
> Jonas.
>
>
>
> Here ya go:
>
>
>
> 112233# use ${EXTEN:0:6})
>
> 123# use ${EXTEN:0:3})
>
> 123456789# use ${EXTEN:0:9})
Yes; but the whole point is, the original poster does not know the length of
the number in the first place!
What is needed is
${EXTEN:0:-1}
which will skip no digits from the beginning, and use all but one digit of the
remainder.
Now, here's my handy cut-out-and-keep guide to the syntax for the implied
substring method in Asterisk dialplan:
Write
${VARIABLE:skip}
to skip some characters and use everything else, or
${VARIABLE:skip:show}
to skip some characters and only use part of the remainder. And a minus sign
means "all but". Some recipes, by way of example;
When dealing with international calls,
${EXTEN:2}
will remove the "00" from the beginning (skip 2 digits).
When routing direct dial-in numbers,
${EXTEN:-3}
gets the last 3 digits of the dialled number (skip all but 3 digits).
If the number allocation has been crafted carefully so that (for argument's
sake) numbers in the range 100 - 199 are management and accounts, 200 - 299
are sales, 300 - 399 are purchasing, 400 - 499 are IT and buildings
maintenance and 500 - 599 are factory floor, then
${EXTEN:-3:1}
will indicate the department (skip all but 3, and use only the first digit).
You could also write ${EXTEN:-3:-2} (skip all but 3, and use all but 2 of the
remainder) but since you already know the length anyway, this is probably a
little pointless.
To remove both a dialled "9" from the beginning and a terminating comment mark
from the end (skip one and use all but one) then the required syntax would
be
${EXTEN:1:-1}
--
AJS
Answers come *after* questions.
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Re: [asterisk-users] Cut off last character of EXTEN
From: asterisk-users-boun...@lists.digium.com
[mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Steven Howes
Sent: Tuesday, August 20, 2013 7:38 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Cut off last character of EXTEN
On 20 Aug 2013, at 12:25, Pat Collins wrote:
Here ya go:
112233# use ${EXTEN:0:6})
123# use ${EXTEN:0:3})
123456789# use ${EXTEN:0:9})
I think 'variable length' implied 'unknown length'...
S
Yea, I realized that after I replied
Got ahead of myself again.
That was the only way I was able to get rid of the '#' tho
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Re: [asterisk-users] Cut off last character of EXTEN
On 20 Aug 2013, at 12:25, Pat Collins wrote:
> Here ya go:
>
> 112233# use ${EXTEN:0:6})
> 123# use ${EXTEN:0:3})
> 123456789# use ${EXTEN:0:9})
I think 'variable length' implied 'unknown length'...
S--
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Re: [asterisk-users] Cut off last character of EXTEN
From: asterisk-users-boun...@lists.digium.com
[mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Jonas Kellens
Sent: Tuesday, August 20, 2013 4:29 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Cut off last character of EXTEN
Hello,
how can I cut off the last character of the EXTEN-variable with variating
length ?
So I have :
112233#
123#
123456789#
I want to cut off the last character.
${EXTEN:-1} gives me #, but that is the character I want to cut off.
Kind regards,
Jonas.
Here ya go:
112233# use ${EXTEN:0:6})
123# use ${EXTEN:0:3})
123456789# use ${EXTEN:0:9})
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Re: [asterisk-users] Cut off last character of EXTEN
Damn it!
Try: "${EXTEN:0:-1}"
jg
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Re: [asterisk-users] Cut off last character of EXTEN
On 08/20/2013 10:40 AM, Gareth Blades wrote:
On 20/08/13 09:29, Jonas Kellens wrote:
Hello,
how can I cut off the last character of the EXTEN-variable with
variating length ?
So I have :
112233#
123#
123456789#
I want to cut off the last character.
${EXTEN:-1} gives me #, but that is the character I want to cut off.
Set(variable=${EXTEN:0:$[LEN(${EXTEN})-1]})
Hello,
this works !
Thanks.
Jonas.
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Re: [asterisk-users] Cut off last character of EXTEN
Hi,
try
[testEx]
exten => _X.,1,noop(${EXTEN})
same => n,noop(len: ${LEN(${EXTEN})})
same => n,noop(${EXTEN:0:${MATH(${LEN(${EXTEN})}-1)}})
exten => _X.,n,hangup
On 20 August 2013 12:15, Jonas Kellens wrote:
> On 08/20/2013 10:47 AM, jg wrote:
>
> How about "${EXTEN:-1:1}"?
>
> "The Definitive Guide" has a special paragraph with the title "*More
> Advanced Digit Manipulation".*
>
> jg
>
>
>
> Same result : #
>
>
> Jonas.
>
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Re: [asterisk-users] Cut off last character of EXTEN
On 08/20/2013 10:47 AM, jg wrote:
How about "${EXTEN:-1:1}"?
"The Definitive Guide" has a special paragraph with the title "*More
Advanced Digit Manipulation".*
jg
Same result : #
Jonas.
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Re: [asterisk-users] Cut off last character of EXTEN
How about "${EXTEN:-1:1}"?
"The Definitive Guide" has a special paragraph with the title "*More Advanced Digit
Manipulation".*
jg
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Re: [asterisk-users] Cut off last character of EXTEN
On 20/08/13 09:29, Jonas Kellens wrote:
Hello,
how can I cut off the last character of the EXTEN-variable with
variating length ?
So I have :
112233#
123#
123456789#
I want to cut off the last character.
${EXTEN:-1} gives me #, but that is the character I want to cut off.
Set(variable=${EXTEN:0:$[LEN(${EXTEN})-1]})
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[asterisk-users] Cut off last character of EXTEN
Hello,
how can I cut off the last character of the EXTEN-variable with
variating length ?
So I have :
112233#
123#
123456789#
I want to cut off the last character.
${EXTEN:-1} gives me #, but that is the character I want to cut off.
Kind regards,
Jonas.
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