eda-tools/fab/drl2gerber

#!/usr/bin/perl
#
# drl2gerber - Convert a KiCAD-generated Excellon drill file to Gerber
#
# Written 2011, 2017 by Werner Almesberger
# Copyright 2011, 2017 Werner Almesberger
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#


sub begin
{
	return if $began;
	$began = 1;

	print "G04 MACHINE-GENERATED FROM DRILL FILE*\n" || die;
	print "G01*\n" || die;		# linear Interpolation
	print "G70*\n" || die;		# inch units
	print "G90*\n" || die;		# absolute Mode
	if ($mm) {
		print "%MOMM*%*\n" || die;	# millimeters, RS274X-style
	} else {
		print "%MOIN*%*\n" || die;	# inches, RS274X-style
	}
	print "%FSLAX34Y34*%\n" || die;	# format
}

while (<>) {
	chop;
	if (/^METRIC/) {
		$mm = 1;
		next;
	}
	if (/^T(\d+)C/) {
		&begin;
		print "%ADD", $1 + 10, "C,$'*%\n" || die;
		next;
	}
	if (/^T(\d+)$/) {
		&begin;
		print "G54D", $1 + 10, "*\n" || die;
		next;
	}
	if (/^X([-0-9.]+)Y([-0-9.]+)$/) {
		&begin;
		printf("X%dY%dD03*\n", $1 * 10000, $2 * 10000) || die;
		next;
	}
	if (/^X([-0-9.]+)Y([-0-9.]+)G85X([-0-9.]+)Y([-0-9.]+)$/) {
		&begin;
		printf("X%dY%dD02*\nX%dY%dD01*\n",
		    $1 * 10000, $2 * 10000, $3 * 10000, $4 * 10000) || die;
		next;
	}
}

&begin;
print "M02*\n" || die;