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sposition.pl - String Positioning

Posted by Stefan Schurtz on
The Script will find the line number and positions of the @ symbols in pos.txt.
 
# cat pos.txt
 
00000000000000000000000@00000000000000000000000000
0000000000000000@000000000000000000000000000000000
00000000000000000000000000000000000000000@0@000000
000000000000000000000@0000000000000000000000000000
00000000000000000000000000@000@0000000000000000000
 
# ./sposition.pl
1-23, 2-16, 3-41, 3-43, 4-21, 5-26, 5-30,
 
Here is the code
 
#!/usr/bin/perl
use strict;
use warnings;

my $dict = 'pos.txt';
my $c = 0;

open DICT, '<', $dict
  or die "Cannot open '$dict': $!";

while (<DICT>) {
       
        my $string = $_;
        my $char = '@';
        my $offset = 0;
        my $result = index($string, $char, $offset);

        $c++;

        while ($result != -1) {
                print "$c-$result" .", ";
                $offset = $result + 1;
                $result = index($string, $char, $offset);
        }
}
print "\n";
close DICT;
 

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Warning: opendir(/var/www/html/web1/serendipity/plugins/serendipity_event_dpsyntaxhighlighter/sh/3.0.83.2/scripts/): failed to open dir: No such file or directory in /var/www/html/web1/serendipity/plugins/serendipity_event_dpsyntaxhighlighter/serendipity_event_dpsyntaxhighlighter.php on line 26

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