#!/usr/bin/perl

sub usage
{
	print STDERR "usage: $0 name=name ... [file ...]\n";
	exit(1);
}


&usage if $ARGV[0] =~ /^-/;
&usage if !@ARGV;

while ($ARGV[0] =~ /=/) {
	die "already renaming component $`" if defined $map{$`};
	die "already renaming component $'" if defined $map{$'};
	$map{$`} = $';
	$map{$'} = $`;
	shift @ARGV;
}

undef $mod;
while (<>) {
	if (/^\$MODULE\s+(\S+)\s*$/) {
		die "\$MODULE within \$MODULE" if $mod;
		$mod = 1;
		$fp = $1;
		undef $name;
	}
	if (!$mod) {
		print;
		next;
	}
	if (/^(T0\s.*")([^"]+)("\s*)$/) {
		die "duplicate name \"$name\" vs. \"$2\"" if defined $name;
		$name = $2;
		if (defined $map{$name}) {
			print "$1$map{$name}$3";
		} else {
			print;
		}
	} else {
		print;
	}
	if (/^\$EndMODULE/) {
		die "module has no name" unless defined $name;
		if (defined $map{$name}) {
			if ($mod{$map{$name}}) {
				die "footprint mismatch: $name/$fp vs. ".
				    $map{$name}."/".$fp{$map{$name}} unless
				    $fp eq $fp{$map{$name}};
				delete $map{$map{$name}};
				delete $map{$name};
			} else {
				$mod{$name} = 1;
				$fp{$name} = $fp;
			}
		}
		$mod = 0;
	}
}

die "EOF within module" if $mod;
for (keys %map) {
	die "not swapped: ".join(", ", sort keys %map);
}