#!/usr/bin/perl
#
# Source:
# http://downloads.qi-hardware.com/hardware/milkymist_one/bom/rc3/milkymist_one_bom_rc3.ods
# - save as CVS
# - edit to remove embedded newlines
#

sub csv
{
	my $s = $_[0];
	my @a = ();

	while (1) {
		if ($s =~ /^"/) {
			die unless $s =~ /^"([^"]*)"(,\s*)?/;
			push(@a, $1);
			$s = $';
			return @a unless length $2;
			
		} elsif ($s =~ /,\s*/) {
			push(@a, $`);
			$s = $';
		} else {
			push(@a, $s);
			return @a;
		}
	}
	
}

while (<>) {
	chop;
	@f = &csv($_);
	next unless $f[0] =~ /^[0-9]+$/;
	die "duplicate part $f[3]" if defined $cr{$f[3]};
	$f[1] =~ s/\(DNP\)//g;
	$cr{$f[3]} = $f[1];
	$url{$f[3]} = $f[4];
	$dsc{$f[3]} = $f[6];
	for (&csv($f[1])) {
		warn "\"$_\" used for $r{$_} and $f[3]" if defined $r{$_};
		$r{$_} = $f[3];
	}
}

open(F, "SUPPLEMENT") || die "open SUPPLEMENT: $!";
while (<F>) {
	chop;
	next if /^\s*#/;
	next if /^\s*$/;
	if (/^[Cc]:\s*/) {
		die "unknown component reference $'" unless defined $r{$'};
		$p = $r{$'};
		next;
	}
	if (/^[Pp]:\s*/) {
		$p = $';
		next if defined $cr{$p};
		@a = grep { $_ =~ /^$p/ } keys %cr;
		die "key $p* is ambiguous" if scalar @a > 1;
		if (!@a) {
			@a = grep { $_ =~ /$p/ } keys %cr;
			die "key *$p* is ambiguous" if scalar @a > 1;
			die "key $p matches nothing" unless @a;
		}
		$p = $a[0];
		next;
	}
	if (/^[Aa]:\s*/) {
		$a{$p} .= "," if defined $a{$p};
		$a{$p} .= $';
		next;
	}
	if (/^[Dd]:\s*/) {
		$url{$p} = $';
		next;
	}
	die "don't recognize \"$_\"";
}

for (sort keys %cr) {
	next if $url{$_} eq "";
	print "# $dsc{$_}\n" unless $dsc{$_} eq "";
	print "N: $_\n";
	for $a (&csv($cr{$_})) {
		print "A: $a\n";
	}
	if (defined $a{$_}) {
		for $a (&csv($a{$_})) {
			print "A: $a\n";
		}
	}
	print "D: $url{$_}\n\n";
}