collapseos/tools/font_compile.pl
Virgil Dupras a13a94bbc7 fix typos
2019-11-07 12:13:00 -05:00

31 lines
854 B
Perl
Executable File

#!/usr/bin/perl
use strict;
# This script converts "space-dot" fonts to binary "glyph rows". One byte for
# each row. In a 5x7 font, each glyph thus use 7 bytes.
my $fn = @ARGV[0];
unless ($fn =~ /.*(\d)x(\d)\.txt/) { die "$fn isn't a font filename" };
my ($width, $height) = ($1, $2);
print STDERR "Reading a $width x $height font.\n";
my $handle;
unless (open($handle, '<', $fn)) { die "Can't open $fn"; }
# We start the binary data with our first char, space, which is not in our input
# but needs to be in our output.
print pack('C*', (0) x $height);
while (<$handle>) {
unless (/( |\.){${width}}\n/) { die "Invalid line format '$_'"; }
my @line = split //, $_;
my $num = 0;
for (my $i=$width-1; $i>=0; $i--) {
if (@line[$width-$i-1] eq '.') {
$num += (1 << $i);
}
}
print pack('C', $num);
}