[Q] sending binary data in expect

[Henry Ptasinski]

Hi,

I'm trying to automate a control application with expect and I'm having
some difficulty handling binary data. After spawing a process and
doing some initial configuration, I need to transmit a block of binary
data from a file to the spawned process. I've been trying to work
with the process as a file in tcl using exp_open, but I can't seem to get
the data from the binary file into the process.

Anybody have some ideas for an easy (or at least workable) way to
do this?

Thanks,
--
Henry Ptasinski
he...@logout.com

[Matt DiMeo]

In article <47j2lo$i...@rosebud.sdsc.edu>,

Henry Ptasinski <he...@hptasins.cerfnet.com> wrote:
>with the process as a file in tcl using exp_open, but I can't seem to get
>the data from the binary file into the process.

Among tcl's flaws is it's total inability to handle binary data properly.
You'll probably need to write some C code in order to handle blobs of
arbitrary data. You might have to extend expect as well.

Best of luck,
-m@

[Don Libes]

Expect can read/write nulls. Read page 281 in the Expect book for
more info.

Don