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#!/usr/bin/env perl
use warnings;
use Getopt::Long;
use diagnostics;
use strict;
&initialization_and_options;
# +-------------------+
# | Main Program |
# +-------------------+
my @bdf = ();
my $glyphs = 0;
my $fontfile = $ARGV[0];
open (my $fh, '<', $fontfile) or die "$::MYNAME: could not open $fontfile: $!";
while (my $line = <$fh>) {
next if ($line =~ /^\s*#/);
if ($line =~ /^([[:xdigit:]]+):([[:xdigit:]]+)$/) {
if ($::opt_display) {
&display_glyph($1, $2);
}
else {
&convert_glyph($1, $2);
}
}
else {
print STDERR "$::MYNAME: ignoring unrecognized line: $line\n";
}
}
close $fh;
unless ($::opt_display) {
&write_preamble();
print @bdf;
print "ENDFONT\n";
}
&cleanup ();
# +-------------------+
# | Subroutines |
# +-------------------+
sub display_glyph () {
my ($glyphno, $bitmap) = @_;
foreach my $p (unpack "(A4)*", $bitmap) {
my $n = hex $p;
foreach my $bit (map { 1 << $_ } reverse 4..15) {
print $n & $bit ? "██" : " ";
}
print "\n";
}
}
sub convert_glyph () {
my ($glyphno, $bitmap) = @_;
push @bdf, "STARTCHAR U+$glyphno\n";
push @bdf, sprintf("ENCODING %d\n", hex($glyphno));
if (length($bitmap) == 88) {
push @bdf, "SWIDTH 500 0\n";
push @bdf, "DWIDTH 12 0\n";
push @bdf, "BBX 12 22 0 -5\n";
push @bdf, "BITMAP\n";
foreach my $p (unpack "(A4)*", $bitmap) {
push @bdf, "$p\n";
}
}
elsif (length($bitmap) == 132) {
push @bdf, "SWIDTH 1000 0\n";
push @bdf, "DWIDTH 24 0\n";
push @bdf, "BBX 24 22 0 -5\n";
push @bdf, "BITMAP\n";
foreach my $p (unpack "(A6)*", $bitmap) {
push @bdf, "$p\n";
}
}
else {
printf STDERR "Unexpected bitmap length (not 88 or 132) in glyph U+%04x\n", $glyphno;
exit 1;
}
push @bdf, "ENDCHAR\n";
++$glyphs;
}
sub write_preamble () {
print "STARTFONT 2.1\n";
print "FONT -sun-gallant-medium-r-normal--22-220-75-75-c-80-iso10646-1\n";
print "SIZE 22 75 75\n";
print "FONTBOUNDINGBOX 22 12 0 -5\n";
print "STARTPROPERTIES 2\n";
print "FONT_ASCENT 17\n";
print "FONT_DESCENT 5\n";
print "ENDPROPERTIES\n";
print "CHARS $glyphs\n";
}
sub usage {
print STDERR <<"EOF";
usage: $::MYNAME font.hex
Convert a VT hex font file to X11 bdf font file.
Options:
--help show this help text
--verbose verbose mode
Examples:
$::MYNAME /usr/src/share/vt/fonts/gallant.hex > gallant.bdf
EOF
print STDERR '$Id: pl.tpl,v 1.5 2013/02/13 21:59:32 schweikh Exp schweikh $',
"\n";
exit 1;
}
sub initialization_and_options {
$SIG{'INT'} = 'cleanup';
$SIG{'TERM'} = 'cleanup';
$SIG{'HUP'} = 'cleanup';
$::MYNAME = $0; # Set program name for diagnostic messages.
$::MYNAME =~ s,.*/,,; # Strip directory part.
$::TMP1 = "/tmp/$::MYNAME.$$";
$::opt_help = $::opt_verbose = 0; # to have them used at least twice
$::opt_display = 0;
&usage unless &GetOptions ('display', 'help', 'verbose');
&usage if $::opt_help or $#ARGV != 0; # exactly one arg is needed
print "$::MYNAME\n" if $::opt_verbose;
}
sub cleanup {
unlink $::TMP1 if -f $::TMP1;
exit;
}
# vim: syntax=perl tabstop=2 shiftwidth=2 expandtab fileformat=unix
|
