asterisk users - Jun 2003 - How do i make best use of Macro?

Hi,

im trying to setup a chat system. And i belive the best way is using an
macro. But a couple of questions regarding using macros pops up.

a) Is there state building up if my macro calls itself recusivly?

Pseudo example:
[macro-chat]
to_many? Macro(chat, next_room)
increase # of users in chat

meeteme(room)

exit from meetme: decrease # of users in chat then Macro(chat, next_room)

exten => h,1, decrease # of users in chat

<end example>

In this example i call the macro again and again until hangup.

Is this a good way to implement my chat functionality?
Or should i try another path?


b) How do i return from a macro?
Do i just fall out by not having any more valid extensions in the macro?
Vill execution then continue at the next priority?

Or should i use a Goto(newcontext,s,1)?


	/Chris

On Wednesday 11 June 2003 10:43 am, Christopher Arnold
wrote:
> Hi,
>
> im trying to setup a chat system. And i belive the best way is
> using an macro. But a couple of questions regarding using macros
> pops up.
>
> a) Is there state building up if my macro calls itself recusivly?
A macro is NOT a function.  It simply is a shortcut to doing a
longer series of commands.  A macro cannot itself be recursive.
> b) How do i return from a macro?
One does not return from a macro.  Indeed, once the macro is
expanded, it is no longer part of the process.
> Or should i use a Goto(newcontext,s,1)?
I think you're confused as to what a macro can and cannot do.  Until
you understand that distinction, you're going to have trouble
understanding how a macro works within the system.

In any case, I'd recommend that you forget about using macros
and instead use AGI.

-Tilghman

On Wed, 2003-06-11 at 14:43, Tilghman Lesher wrote:
> On Wednesday 11 June 2003 02:09 pm, Steven Critchfield wrote:
> > Okay, while reading over this thread it occured to me one more
> > feature that should be real simple to add to app_meetme.c that
> > would solve quite a bit of what is trying to be done here. The
> > feature that needs to be added is a function to pass in a variable
> > and let meetme populate it with the current number of users.
> > Possibly have it be a second argument to the current MeetMeCount
> > that would populate the variable and skip the ast_say_number
> > function. This would allow it to be backwards compatible, while
> > moving forward.
> >
> > How it would benefit the current question is that you could
> > basically script up a fall through set of priorities that made it
> > work
> >
> > exten=> x,1,MeetMeCount(1234,num)
> 
> Applications can only take a single argument.  I would propose
> using something like (e1234) - e for export variable; then export
> the value to a common variable like ${MEETMECOUNT}.
True and false. You get passed data, and what you do with data is up to
you. I could split on some non important character and do what I want
with the string. So while you are correct, I can do anything I want with
my string.

-- 
Steven Critchfield  <critch@basesys.com>

There is already a "MeetmeCount" application if that's helpful.

mark

On Wed, 11 Jun 2003, Christopher Arnold wrote:
>
> Hi,
>
> im trying to setup a chat system. And i belive the best way is using an
> macro. But a couple of questions regarding using macros pops up.
>
> a) Is there state building up if my macro calls itself recusivly?
>
> Pseudo example:
> [macro-chat]
> to_many? Macro(chat, next_room)
> increase # of users in chat
>
> meeteme(room)
>
> exit from meetme: decrease # of users in chat then Macro(chat, next_room)
>
> exten => h,1, decrease # of users in chat
>
> <end example>
>
> In this example i call the macro again and again until hangup.
>
> Is this a good way to implement my chat functionality?
> Or should i try another path?
>
>
> b) How do i return from a macro?
> Do i just fall out by not having any more valid extensions in the macro?
> Vill execution then continue at the next priority?
>
> Or should i use a Goto(newcontext,s,1)?
>
>
> 	/Chris
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users@lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
>