CX89 Apple tree
CX89 Sailing boat
CX89 Apple tree
AC75 Apple candy
CX89 Sailing boat

#!/usr/bin/perl --

use strict;
use warnings;

use diagnostics;

use Text::CSV;
use Text::CSV_XS qw( );

#main
{
  use autodie 2.06;
  open( my $fh_in, '<', 'data.txt' );

  my $col_rules = [
    [
      [ 1 => eq => 'Apple'],
      [ 0 => eq => 'CX89'],
      [ "%s %s tree\n" => [ 0, 1 ] ],
    ],
    [
      [ 1 => eq => 'Sailing'],
      [ 0 => eq => 'CX89'],
      [ "%s %s boat\n" => [ 0, 1 ] ],
    ],
    [
      [ 0 => ne => 'CX89'],
      [ 1 => eq => 'Apple'],
      [ 1 => ne => 'Sailing'],
      [ "%s %s candy\n" => [ 0, 1 ] ],
    ],
  ];
  process_rules( $col_rules, $fh_in, \*STDOUT );
}

sub process_rules {
  my ( $rules, $in, $out ) = @_;
  my $csv_in = Text::CSV->new( { sep_char => ',', eol => $/ } )
    or die Text::CSV->error_diag();
  my $csv_out = Text::CSV->new( { eol => $/ } )
    or die Text::CSV->error_diag();

  while ( my $row = $csv_in->getline($in) ) {
    my $rulematch = 0;
    for my $ruleset (@$rules) {
      last if $rulematch;
      my $ruleset_match = 0;
      for my $rule ( @$ruleset[0 .. $#$ruleset ] ) {
        my ( $ix, $op, $val ) = @$rule;
        $ruleset_match++ if $op eq 'eq' and $val eq $row->[$ix];
        $ruleset_match++ if $op eq 'ne' and $val ne $row->[$ix];
      }

#~ warn '$rulematch ',$rulematch;
#~ warn '$ruleset_match ', $ruleset_match ;
#~ warn '$#$ruleset ', $#$ruleset ;

      if ( $ruleset_match == $#$ruleset ) {
        $rulematch++;
        my ( $printf, $indices ) = @{ $ruleset->[-1] };
        $out->printf( $printf, (@$row)[@$indices] );
      }
    }
  }
}


__DATA__
"CX89",Apple
"CX89",Sailing
"CX89",Apple
"AC75",Apple
"CX89",Sailing
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