Re^2: Parsing and modifying CSV files

Wow..... I was way off.
Here is an update:

#!/usr/local/bin/perl
use strict;

my %stock;
$stock{'128'} = [0,224,0,0];
$stock{'12'} = [0,0,15,0];
$stock{'8'} = [32,0,0,0];

while (<DATA>) {  ## file2
  my @data = split(',',$_);
  if (exists $stock{$data[0]}) {
    my $ary_ref = $stock{$data[0]};
    my ($sm,$md,$lg,$xl) = @$ary_ref;

    if($sm eq '0'){$sm=''}else{$sm=0};
    if($md eq '0'){$md=''}else{$md=0};
    if($lg eq '0'){$lg=''}else{$lg=0};
    if($xl eq '0'){$xl=''}else{$xl=0};


    $data[9]  = $sm;
    $data[12] = $md;
    $data[15] = $lg;
    $data[18] = $xl;
  }
  print (join(',', @data));
}

__DATA__
128,1,Download,0,,TEXT,2,Size,2,??,SM,3,??,MD,4,??,LG,5,??,XL
12,1,Download,0,,TEXT,2,Size,2,??,SM,3,??,MD,4,??,LG,5,??,XL
8,1,Download,0,,TEXT,2,Size,2,??,SM,3,??,MD,4,??,LG,5,??,XL
[download]

What's scary is.... I Almost understand it.
Thanks to everyone that replied.

Comment on Re^2: Parsing and modifying CSV files Download Code

Replies are listed 'Best First'.
Re^3: Parsing and modifying CSV files by poj (Abbot) on Sep 25, 2005 at 08:56 UTC
Another way would be to use the conditional operator inside a loop `# field number for sizes SM MD LG XL my @fno =(9,12,15,18); while (<DATA>) { ## file2 my @data = split(',',$_); my $ky = $data[0]; if (exists $stock{$ky}) { # check each size for my $sz (0..3){ $data[$fno[$sz]] = ( $stock{$ky}[$sz] eq '0' ) ? '' : '0' ; } } print (join(',', @data)); }` [download] poj	[reply] [d/l]
Re^4: Parsing and modifying CSV files by poj (Abbot) on Sep 26, 2005 at 21:18 UTC
If you substitute $sz with 0 the expression becomes `$data[$fno[0]]` and because `$fno[0] = 9` this equates to `$data[9]` If the expression `$stock{$ky}[0] eq '0'` is true then `$data[9] = ''` else `$data[9] = '0'` poj	[reply] [d/l] [select]
Re^4: Parsing and modifying CSV files by Anonymous Monk on Sep 26, 2005 at 20:49 UTC
Can you explain $data[$fno$sz] = ( $stock{$ky}$sz eq '0' ) ? '' : '0' ; ? Is it setting the value of the array to 0 or ''? I don't understand the brackets around $sz.	[reply]