#!/usr/bin/perl

# TODO
#
# * add getopt support
# * use tag generator to expand list of wanted fields?
# * insertion of constant-value fields
# * field mapping ("some text" -> 4)?

# csv-extractor FILENAME FIELD_LIST

use strict;
use warnings;

use Text::CSV;

my $csv = Text::CSV->new( {binary => 1});

open CSV, '<', shift or die "Can't open file $!\n";

while (<CSV>) {
    $csv->parse($_);
    die "Bad data on line $.\n$_\n" if ($csv->error_diag);
    my @chunks = $csv->fields;
    my @out = ();
    for my $chunk (@ARGV)
      { push @out, $chunks[$chunk] }
    print join("\t", @out), "\n";
}