Phoenix.pm: Code problem

Kevin Buettner kev at primenet.com
Tue Oct 12 18:25:59 CDT 1999


Reread the first part of my message.  I think the problem is that
the output buffer for outfile is not getting flushed.  You can
use the autoflush call after opening it to make sure that it gets
flushed on every write.

Kevin

On Oct 12,  4:00pm, Giffin Ron-P08295 wrote:
> Subject: RE: Phoenix.pm: Code problem
> Kevin,
> I am using some system calls inside Perl and sometimes
> encountering unexpected row (record) sizes, therefore
> I wanted to write a script to see how Unix sees the line
> and how Perl sees the line.  When wc is executed the file
> size seems to be 0 - doesn't make sense to me.
> 
>   -- Ron
> 
> -----Original Message-----
> From: Kevin Buettner [mailto:kev at primenet.com]
> Sent: Tuesday, October 12, 1999 3:39 PM
> To: phoenix-pm-list at happyfunball.pm.org
> Subject: Re: Phoenix.pm: Code problem
> 
> 
> On Oct 12,  3:20pm, Giffin Ron-P08295 wrote:
> 
> > Ok...  My fear of being a dummy is overpowered by my need to
> > finish this script.  $in_file contains 44 word columns separated
> > by tabs.
> > 
> >     open ( IN_FILE, $in_file ) || die ........
> >     open ( OUT_FILE, "> $out_file" ) || die .......
> >     while ( <IN_FILE> )
> >         {
> >         print OUT_FILE $_ ;
> >         $size = `wc -w $out_file | tr -s " " | cut -f1 -d " "` ;
> >         print "Unix word count = $size\n" ;
> >         }
> >     close ....
> >     close ....
> > 
> > $size is always 0 ---- What's wrong with this ( bet I going to be
> > embarrassed )
> 
> How big are the files that you're trying it on?  My guess is that
> the buffer is not getting flushed.  You might try doing
> 
>     OUT_FILE->autoflush(1);
> 
> after opening it.  (You'll also have to add a "use FileHandle;" line.)
> 
> BTW, there are better ways of keeping track of the number of words
> written out.  I would just let perl count them for you; e.g, try doing
> 
> 	$size += split;
> 
> Kevin
> 
> -- 
> Kevin Buettner
> kev at primenet.com, kevinb at cygnus.com
>-- End of excerpt from Giffin Ron-P08295



-- 
Kevin Buettner
kev at primenet.com, kevinb at cygnus.com



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