#!/usr/bin/perl

$USAGE = "xface2xpm [-t] [-fg <color>] [-bg <color>] [<file>]";

# compface/uncompface
# ftp://metalab.unc.edu/pub/Linux/apps/graphics/convert/
$UNCOMPFACE = "uncompface";

$T = "c";
$BG = "white";
$FG = "black";
while (@ARGV) {
$_ = shift @ARGV;
if (/^-h/) {
&usage(0);
} elsif (/^-t/) {
$T = "s";
$BG = "none";
} elsif (/^-bg/) {
@ARGV || &usage(1);
$BG = shift @ARGV;
} elsif (/^-fg/) {
@ARGV || &usage(1);
$FG = shift @ARGV;
} elsif (/^-./) {
&usage(1);
} else {
unshift(@ARGV, $_);
last;
}
}

$xf = "";
while(<>) {
# s/^X-Face://i if ($xf eq "");
$xf .= $_;
}

pipe(R, W2);
pipe(R2, W);
if (! fork()) {
close(R);
close(W);
open(STDIN, "<&R2");
open(STDOUT, ">&W2");
exec $UNCOMPFACE;
exit 1;
}
close(R2);
close(W2);
print W $xf;
close(W);
while(<R>) {
while(s/0x(..)(..)//) {
push(@bm, hex($1), hex($2));
}
}
close(R);
@bm || exit 1;

$W = 48;
$H = @bm * 8 / $W; # must be 48
print <<EOF;
/* XPM */
static char *xf[] = {
/* columns rows colors chars-per-pixel */
"$W $H 2 1",
" $T $BG",
". c $FG",
/* pixels */
EOF
while (@bm) {
print "\"";
for (1..6) {
$x = shift @bm;
for $i (1 .. 8) {
print ((($x >> (8-$i)) & 1) ? "." : " ");
}
}
print (@bm ? "\",\n" : "\"\n");
}
print <<EOF;
};
EOF

sub usage {
local($err) = @_;
if ($err) {
print STDERR "$USAGE\n";
} else {
print "$USAGE\n";
}
exit $err;
}