Re: [Expectperl-discuss] expect output split into pieces

[Roland G. <rgi...@cp...>]

how about adjusting your regex to deal with one complete line after another?
something like "Internet.*\n"?

hope this helps,
roland

On 5/17/07, Jason Gerdes <JG...@cw...> wrote:
> Hello,
>
> Here is the problem I am having:
>
> I use expect to spawn an SSH session to a cisco router and run the command 'show arp', which sends a lot of data back.  example:
>
> gw>show arp
> Protocol  Address          Age (min)  Hardware Addr   Type   Interface
> Internet  XX.XX.108.17            0   XXXX.319f.c3d9  ARPA   Vlan133
> Internet  XX.XX.97.28           171   XXXX.c525.d4c3  ARPA   Vlan122
> Internet  XX.XX.99.30            41   XXXX.420c.e73f  ARPA   Vlan124
> ... (there are thousands of lines sent back)
>
> The problem I get is that expect seems to process this data in chunks.  For example, it will process:
>
> Protocol  Address          Age (min)  Hardware Addr   Type   Interface
> Internet  XX.XX.108.17            0   XXXX.319f.c3d9  ARPA   Vlan133
> Internet  XX.XX.97.28           171   XXXX.c5
>
> where it will pull out the data correctly for the first line, but will not match the second line since it is incomplete.  Then, it processes the next chunk.  example:
>
> 25.d4c3  ARPA   Vlan122
> Internet  XX.XX.99.30            41   XXXX.420c.e73f  ARPA   Vlan124
>
> where it will not pull the data correctly for the first line (incomplete), but will pull the correct data for the second line.
>
> I have used the TCL expect before and it does the same thing so I know it is not a bug.  I think there is just a gap in my understanding of how expect processes the data that is sent back from spawned processes.
>
> Is there a way to make expect deal with all of the data as one big chunk, rather than processing it in pieces?  I hope someone can explain how this works.
>
>
>
> --Jason
>
>
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