I am trying to write a simple script to convert old stock option symbols to a new symbol format. This should be simple, but I am very new to Perl.

This script should take a list of symbols from a text file, change them to the new format, and print them out. For example, I need to change A.TL5E001100.TAV to +TL\E5C1100.TAV.

When I run my script I get 2 errors:

1. Unrecognized escape \F passed through at Find.Replace.TAV.options.P2.pl line 33.

- so it is choking on the "\" and I am not sure how to tell Perl how to treat this as text. I tried single and double quotes.

2. Use of uninitialized value $NewSym in concatenation (.) or string at Find.Replace.TAV.options.P2.pl line 41, <FILE> line 590.

- I am trying to print the new symbols to a file and I am obviously not specifying the outputted values correctly. 


# this is my script to translate TAV stock options.

use strict;
use warnings;


open (OUTPUT, ">TAV.opt.rename.txt") || die "TAV.opt.rename.txt $!\n";

my @file = <TAV.stock.opt.oldsym.txt>;
# my $OldSym;
my $NewSym;


foreach my $f (@file)
{
    open (FILE, $f) || die "Could not open $f $!\n";
    my $line;

    while ($line = <FILE>)
    {
     chomp ($line);
     
     if ($line =~ m/^A.TL5E00/)
     {
     
     $line =~ s/A.TL5E00/'+TL\E5C'/g;    

     }
     
    elsif ($line =~ m/^A.TL5F00/) 
     
     {
     
    $line =~ s/A.TL5F00/'+TL\F5C'/g;    
    
     }

[download]

The line above is where it is choking on the "\" character 

    
    } 
    
    $NewSym = $line;
    
    print OUTPUT "$NewSym\n";
}

[download]

In reply to Substitute script for a newbie by jspanos

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