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Re: Perl Expect Send Slow Oddness

by quester (Vicar)
on Jul 31, 2009 at 13:43 UTC ( #784897=note: print w/replies, xml ) Need Help??


in reply to Perl Expect Send Slow Oddness

This is partly guesswork since I'm not at my Perl machine to test my theory at the moment, but...

in the source for Expect, http://cpansearch.perl.org/src/RGIERSIG/Expect-1.21/Expect.pm, the definition of send_slow contains this...
sub send_slow{ ... while ($chunk = shift) { @linechars = split ('', $chunk); foreach $char (@linechars) { ...
The while condition really should have been (defined ($chunk = shift)) in order to avoid falling out of the loop when $chunk is false. (In your case it's "0" which is false, but "" would cause the same problem.)

You could patch your copy of Expect.pm (and optionally submit the patch to the module author for good karma.)

Oc you could just patch your own code to work around it, which is the path of least resistance. According to the documentation, send_slow pauses after every individual character, not just after each string argument. So you could try changing these lines in your code
my @SlowChars = split(//,$_send); print Dumper(@SlowChars); my $return = $exp->send_slow(1,@SlowChars);
to just
print Dumper($_send); my $return = $exp->send_slow(1,$_send);


Update: Remembered to add the inner parentheses to (defined ($chunk = shift)).

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[ELISHEVA]: but it seems that the DBD::CSV layer on top of it doesn't
[afoken]: Also: All other attributes that start with csv_ and are not described above will be passed to Text::CSV_XS (without the csv_ prefix).
[Discipulus]: what about a good 'ol SOPW?
[erix]: Giro d'Italia won by Dumoulin (peccato Nibali)
[ELISHEVA]: csv_detect_bom doesn't work either
[erix]: (SCNR)
[ELISHEVA]: I may have to resort to SOPW - but was hoping that this would be something simple
[erix]: I'd just remove the BOM, it is pretty simple
[ELISHEVA]: Simple yes. and I did consider that. but this isn't one off . An important data source that I don't control is generating bom prefixed utf8 files and I'd rather not have to be munging files every few months.
[erix]: on teh other hand a SOPW is pretty much garanteed to get an answer from tux (and probably the module fixed)

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