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Re: split of files

by Moron (Curate)
on Jun 22, 2007 at 09:53 UTC ( #622761=note: print w/replies, xml ) Need Help??

in reply to split of files

if you mean do file split like unix split does but on pattern-matched boundaries instead of byte counts - I rather imagine something like: (update: with linux, split with -p is available to split on a regexp - then the perl script only has to shell that and cleanup after as follows: glob for the per sequence files, cat each 1000 files at a time together into some second naming convention and remove each 1000 per iteration - on second thoughts I prefer what follows after all!)
my $suffix = 'z'; my $sequence = 0; my $maxseq = 1000; my $input = shift @ARGV or die "usage"; open my $ifh, $input or die "$!: $input\n"; my $ofh; while( <$ifh> ) { /\AINPUT\sSEQUENCE/ and SwitchFile( $input, \$ofh, \$suffix, \$sequence, $maxseq ); $ofh or die "Unexpected prelude: $_"; print $ofh $_; } close $ofh; sub SwitchFile { my ( $input, $oref, $sref, $qref, $max ) = @_; if ( defined( $$oref ) ) ( ++$$qref < $max ) and return; $$qref = 0; close $$oref; } my $newfile = "$input." . ++$$sref; open my $ofh, ">$newfile" or die "$!: $newfile"; $$oref = $ofh; }
This would create the 270 files with suffixes .aa thru .jj


^M Free your mind!

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[LanX]: Network (1976 film) yeah
[LanX]: yeah, we just had a discussion at work that SciFi in the 70s had more inovation
[LanX]: (movies)
[Your Mother]: Real ideas. Ideas grounded in reality as well.
[LanX]: still some good newer ones. Oblivion had a great design, Moon was well acted
[Your Mother]: Moon was mind bending and lovely and what's his nose Sam is *always* fun.
[LanX]: the new BS Galactica series is my all time SoapFiction favourite ...
[Your Mother]: I even liked "The Arrival" and I generally hate time travel (oriented) stuff.
[Your Mother]: Gotta go. Stay out of trouble.
[LanX]: no worries ... mainland Europe is safe ;-P

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