#!/usr/bin/perl
#
# expand-pintype - Expand pin types of symbols in a Kicad library
#
# Copyright 2010, 2012 by 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.
#

#
# usage:
#
# expand-pintype input.lib
# expand-pintype input.lib output.lib
#


$GAP = 50;		# gap between pin and type, in mil
$CHAR_WIDTH = 60;	# default character width, in mil
$NAME_WIDTH = 15;	# name field width in ASCII mode, in characters


%map = (
	"I" => "Input",
	"O" => "Output",
	"B" => "BiDi",
	"T" => "3-state",
	"P" => "Passive",
	"U" => "Unspec",
	"W" => "Pwr In",
	"w" => "Pwr Out",
	"C" => "OC",
	"E" => "OE",
	"N" => "NC",
);

if (@ARGV < 2) {
	$out = 0;
} elsif (@ARGV == 2) {
	$file = pop @ARGV;
	$out = 1;
	open(FILE, ">$file") || die "$file: $!";
} else {
	print STDERR "usage: expand-pintype input.lib [output.lib]\n";
	exit(1);
}

while (<>) {
	if ($out) {
	# make name differ so that KiCad's cache doesn't get confused
		s/^DEF\s+~?/$&X/;
		s/^F1\s+"+/$&X/;
		print FILE || die;
	}
	next unless /^X/;
	@a = split(/\s+/);
	($name, $pin, $x, $y, $dir, $unit, $pt) = @a[1, 2, 3, 4, 6, 9, 11];
	$type = $map{$pt};
	$type = "???" unless defined $type;
	if ($out) {
		$off = $GAP+(length $type)*$CHAR_WIDTH/2;
		if ($dir eq "U") {
			($a, $y) = (90, $y-$off);
		} elsif ($dir eq "D") {
			($a, $y) = (90, $y+$off);
		} elsif ($dir eq "R") {
	    		($a, $x) = (0, $x-$off);
		} else {
			($a, $x) = (0, $x+$off);
		} 
		$type =~ y/ /~/;
		print FILE sprintf("T %d %d %d 60 0 %d 0 %s Normal 0\n",
		    $a*10, $x, $y, $unit, $type);
	} else {
		$s = "$name ($pin)";
		$f = $NAME_WIDTH-length $s;
		$f = "-" x ($f > 0 ? $f : 0);
		print "$s $f $type\n";
	}
}
if ($out) {
	close FILE || die;
}