#!/usr/bin/perl
#
# brdclw - Change line width in a specific module in a KiCAD .brd file
#

sub usage
{
	print STDERR "usage: $0 module from to in-file\n";
	exit(1);
}

&usage unless @ARGV == 4;

$mod = shift(@ARGV);
$from = shift(@ARGV);
$to = shift(@ARGV);

while (<>) {
	$this = $1 eq $mod if /^\$MODULE\s+(\S+)/;
	$this = 0 if /^\$EndMODULE/;
	if ($this && /^DS\s/) {
		@ds = split(/\s+/);
		if ($ds[5] == $from) {
			$ds[5] = $to;
			$_ = join(" ", @ds)."\n";
		}
	}
	print || die;
}