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Full Discussion: Perl Regex string opperation
Top Forums Shell Programming and Scripting Perl Regex string opperation Post 302327147 by dkozel on Friday 19th of June 2009 08:23:20 PM
Old 06-19-2009
Perl Regex string opperation
I'm working on a basic log parser in perl. Input file looks like:
Code:
len: 120713
foo
bar
file size of: testdir1/testdir1/testdir1/testdir1/testfile0 is 120713

Of course there are tens of thousands of lines... I'm trying to compare the len and filesize values.

Code:
#!/usr/bin/perl
use strict;
use warnings;

open FH, "/home/dkozel/testresults" or die $!;

my @lines = <FH>;

my @lengths = grep(/len:/, @lines);
my @sizes   = grep(/file size of/, @lines);

for( my $index = 0; $index < scalar(@lengths); $index++) {
    my $length =  $lengths[$index];
    $length =~ s/\d+$//;
    my $size = $sizes[$index];
    $size =~ s/\d+$//;
    if ($length != $size) {
         print "$len doesn't equal $size";
    }
}

close FH;

$size =~ s/\d+$// does exactly the opposite of what I want. I tried using !~ but that didn't return anything.

Tips?
Many thanks.

---------- Post updated at 05:23 PM ---------- Previous update was at 04:51 PM ----------

Found a working solution. It seems strange to have to use the if statements given that I know that the result is there.

Code:
#!/usr/bin/perl
use strict;
use warnings;

open FH, "/home/dkozel/testresults" or die $!;
my @lines = <FH>;

my @lens = grep(/len:/, @lines);
my @sizes   = grep(/file size of/, @lines);

for( my $index = 0; $index < scalar(@lens); $index++) {
    my $len = $1 if ( $lens[$index] =~ /(\d+)$/ );
    my $size = $1 if ( $sizes[$index] =~ /(\d+)$/ );

    print "$len is not equal to $size\n" if $len != $size;
}

close FH;

Is there a way to simply directly assign it without the If statement?

Thanks.
 

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LEARN ABOUT DEBIAN

zip_set_file_extra

ZIP_SET_FILE_EXTRA(3)					     Library Functions Manual					     ZIP_SET_FILE_EXTRA(3)

NAME

       zip_set_file_extra - set extra field for file in zip

LIBRARY

       libzip (-lzip)

SYNOPSIS

       #include <zip.h>

       int zip_set_file_extra(struct zip *archive, zip_uint64_t index); "const char *extra" "int len"

DESCRIPTION

       The zip_set_file_extra function sets the extra field for the file at position index in the zip archive to extra of length len.  If extra is
       NULL and len is 0, the file extra field will be removed.

RETURN VALUES

       Upon successful completion 0 is returned.  Otherwise, -1 is returned and the error information in archive is set to indicate the error.

ERRORS

       zip_set_file_extra fails if:

	      [ZIP_ER_INVAL]
		  index is not a valid file index in archive, or len is less than 0 or longer than the maximum extra field length in  a  zip  file
		  (65535).

	      [ZIP_ER_MEMORY]
		  Required memory could not be allocated.

SEE ALSO

       libzip(3), zip_get_file_extra(3)

AUTHORS

       Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>

NiH								 February 13, 2011					     ZIP_SET_FILE_EXTRA(3)
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