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#!/usr/bin/perl
# SPDX-License-Identifier: BSD-2-Clause
# Copyright 1996-2017 The NASM Authors - All Rights Reserved
#
# Try our best to find a specific PostScipt font in the system.
# We need to find the font files so we can extract the metrics.
# Sadly there isn't any reasonable Perl module to do this for us,
# as far as I can tell.
#
use strict;
use File::Spec;
use File::Find;
require 'afmmetrics.ph';
require 'ttfmetrics.ph';
my %font_info_hash = ();
my $fonts_scanned = 0;
my %prefs = { 'otf' => 1, 'ttf' => 2, 'pfa' => 3, 'pfb' => 4 };
sub add_file_to_font_hash($) {
my($filename) = @_;
return unless ( -f $filename );
return unless ( $filename =~ /^(.*)\.([[:alnum:]]+)$/ );
my $filestem = $1;
my $fonttype = $2;
my $fontdata;
if ( $filename =~ /\.(otf|ttf)$/i ) {
$fontdata = parse_ttf_file($filename);
} elsif ( $filename =~ /\.(pfa|pfb)$/i ) {
if ( -f "${filestem}.afm" ) {
$fontdata = parse_afm_file($filestem, $fonttype);
}
}
return unless (defined($fontdata));
$fontdata->{filename} = $filename;
my $oldinfo = $font_info_hash{$fontdata->{name}};
if (!defined($oldinfo) ||
$prefs{$fontdata->{type}} < $prefs{$oldinfo->{type}}) {
$font_info_hash{$fontdata->{name}} = $fontdata;
}
}
my $win32_ok = eval {
require Win32::TieRegistry;
Win32::TieRegistry->import();
1;
};
# Based on Font::TTF::Win32 by
# Martin Hosken <http://scripts.sil.org/FontUtils>.
# LICENSING
#
# Copyright (c) 1998-2014, SIL International (http://www.sil.org)
#
# This module is released under the terms of the Artistic License 2.0.
# For details, see the full text of the license in the file LICENSE.
sub scanfonts_win32() {
return unless ($win32_ok);
my $Reg = $::Registry->Open('', {Access=>'KEY_READ', Delimiter=>'/'});
my $fd;
foreach my $win ('Windows NT', 'Windows') {
$fd = $Reg->{"HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/$win/CurrentVersion/Fonts"};
last if (defined($fd));
}
return unless (defined($fd));
foreach my $font (keys(%$fd)) {
my($fname, $ftype) = ($font =~ m:^/(.+?)(| \([^\(\)]+\))$:);
next unless ($ftype =~ / \((TrueType|OpenType)\)$/);
my $file = File::Spec->rel2abs($fd->{$font}, $ENV{'windir'}.'\\fonts');
add_file_to_font_hash($file);
}
}
sub font_search_file {
add_file_to_font_hash($_);
}
sub findfont($) {
my($fontname) = @_;
my $win32 = eval {
require Font::TTF::Win32;
Font::TTF::Win32->import();
1;
};
my($file, $psname, $fontdata);
if (exists($font_info_hash{$fontname})) {
return $font_info_hash{$fontname};
}
# Are we on a system that uses fontconfig?
# NOTE: use a single string for the command here, or this
# script dies horribly on Windows, even though this isn't really
# applicable there...
if (open(my $fh, '-|',
"fc-match -f \"%{file}\\n%{postscriptname}\\n\" ".
"\" : postscriptname=$fontname\"")) {
chomp($file = <$fh>);
chomp($psname = <$fh>);
close($fh);
if ( -f $file ) {
if ($psname eq $fontname) {
add_file_to_font_hash($file);
}
if (!exists($font_info_hash{$fontname})) {
$font_info_hash{$fontname} = undef;
}
return $font_info_hash{$fontname};
}
}
if (exists($font_info_hash{$fontname})) {
return $font_info_hash{$fontname};
} elsif ($fonts_scanned >= 1) {
return $font_info_hash{$fontname} = undef;
}
scanfonts_win32();
$fonts_scanned = 1;
if (exists($font_info_hash{$fontname})) {
return $font_info_hash{$fontname};
} elsif ($fonts_scanned >= 2) {
return $font_info_hash{$fontname} = undef;
}
# Search a set of possible locations for a file, from a few different
# systems...
my @dirs = ('fonts', '/usr/share/fonts', '/usr/lib/fonts', '/Library/Fonts');
push @dirs, $ENV{'windir'}.'\\fonts' if (defined $ENV{'windir'});
push @dirs, $ENV{'HOME'}.'/.fonts', $ENV{'HOME'}.'/Library/Fonts'
if (defined $ENV{'HOME'});
find({wanted => \&font_search_file, follow=>1, no_chdir=>1}, @dirs);
$fonts_scanned = 2;
return $font_info_hash{$fontname};
}
1;
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