[EMAIL PROTECTED] wrote:
>
> Hi:
Hello,
> I'm trying Compression::Bzip2 to compress a file before upload it to
> a server via ftp, but Compression::Bzip2::compress is doing the file
> bigger, perldoc says:
>
> COMPRESSION FUNCTIONS
> $dest = Compress::Bzip2::compress($string)
>
> Compress a string using the default compression level,
> returning a string containing compressed data.
>
> $dest = Compress::Bzip2::compress($string, $level)
>
> Compress string, using the chosen compression level
> (either 1 or 9). Return a string containing the com�
> pressed data.
>
> On error undef is returned.
>
> Even i use 1 or 9 the result is the same, double of original size,
> the test code is:
>
> use warnings;
> use strict;
> use Compress::Bzip2;
>
> open (FIN, '/some/file');
> open (FOUT,'>/some/other/file.bz2');
> my $compressLine;
>
> while (<FIN>) {
> print FOUT Compress::Bzip2::compress($_); #here 1, 9 or nothing
> }
>
> close FIN;
> close FOUT;
>
> When i use bzip2 in the command line, the result file is about mid
> size, and the difference is that the block size is about 900, instead
> 600 when i do it with Compression::Bzip2
You are compressing each line individually. It could be that you need
to compress the whole file.
use warnings;
use strict;
use Compress::Bzip2 'compress';
open FIN, '/some/file' or die "Cannot open '/some/file': $!";
binmode FIN;
open FOUT,'>/some/other/file.bz2' or die "Cannot open
'/some/other/file.bz2': $!";
binmode FOUT;
my $compressLine = do { local $/; <FIN> };
print FOUT compress( $compressLine, 9 );
close FIN;
close FOUT;
John
--
use Perl;
program
fulfillment
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