#!/usr/bin/perl -w
use strict;
# reads a 2-color XPM; outputs space for white, asterisk for black
my @lines = map { tr/",//d; $_ }
 grep {!m{^/\*|[{}]}} <>;
my ($header, @c) = splice(@lines, 0, 3);
my @dims = $header =~ m{(\d+)}g;
die "has too many colors or is in wrong format\n" if $dims[2] > 2 || $dims[3] > 1;
my $text = join('', @lines);
# process colormap
my ($w, $b);
foreach (@c)
{
 m{^\s*(\S).*#(\S+)\s*$};
 hex($2) ? $w = $1 : $b = $1 
}
eval "\$text =~ tr/$w$b/ */";
print $text;