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# -*- perl -*-
#
# Copyright (C) 2021 Felix Lechner
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
package Lintian::Data::Fonts;
use v5.20;
use warnings;
use utf8;
use Const::Fast;
use File::Basename;
use List::SomeUtils qw(first_value uniq);
use PerlIO::gzip;
use Unicode::UTF8 qw(encode_utf8);
const my $SPACE => q{ };
const my $SLASH => q{/};
const my $FONTS => 'fonts';
use Moo;
use namespace::clean;
with 'Lintian::Data::PreambledJSON';
=head1 NAME
Lintian::Data::Fonts - Lintian interface for fonts.
=head1 SYNOPSIS
use Lintian::Data::Fonts;
=head1 DESCRIPTION
This module provides a way to load data files for fonts.
=head1 INSTANCE METHODS
=over 4
=item title
=item location
=item installable_names_by_font
=cut
has title => (
is => 'rw',
default => 'Fonts Available for Installation'
);
has location => (
is => 'rw',
default => 'fonts.json'
);
has installable_names_by_font => (is => 'rw', default => sub { {} });
=item all
=cut
sub all {
my ($self) = @_;
return keys %{$self->installable_names_by_font};
}
=item installed_by
=cut
sub installed_by {
my ($self, $name) = @_;
my $lowercase = lc $name;
return ()
unless exists $self->installable_names_by_font->{$lowercase};
my @installed_by = @{$self->installable_names_by_font->{$lowercase} // []};
return @installed_by;
}
=item load
=cut
sub load {
my ($self, $search_space, $our_vendor) = @_;
my @candidates = map { $_ . $SLASH . $self->location } @{$search_space};
my $path = first_value { -e } @candidates;
my $reference;
return 0
unless $self->read_file($path, \$reference);
my %fonts = %{$reference // {}};
my %installable_names_by_font;
for my $name (keys %fonts) {
my @installable_names;
push(@installable_names, @{$fonts{$name}{installed_by}});
$installable_names_by_font{$name} = \@installable_names;
}
$self->installable_names_by_font(\%installable_names_by_font);
return 1;
}
=item refresh
=cut
sub refresh {
my ($self, $archive, $basedir) = @_;
# neutral sort order
local $ENV{LC_ALL} = 'C';
my $port = 'amd64';
my %fonts;
for my $installable_architecture ('all', $port) {
my $local_path
= $archive->contents_gz('sid', 'main', $installable_architecture);
open(my $fd, '<:gzip', $local_path)
or die encode_utf8("Cannot open $local_path.");
while (my $line = <$fd>) {
chomp $line;
my ($path, $finder) = split($SPACE, $line, 2);
next
unless length $path
&& length $finder;
if ($path =~ m{ [.] (?:[to]tf|pfb) $}ix) {
my @locations = split(m{,}, $finder);
for my $location (@locations) {
my ($section, $installable_name)
= split(m{/}, $location, 2);
# Record only packages starting with ttf-, otf-, t1-, xfonts- or fonts-
next
unless $installable_name
=~ m{^ (?: [to]tf | t1 | x?fonts ) - }x;
my $basename = basename($path);
my $lowercase = lc $basename;
$fonts{$lowercase}{installed_by} //= [];
push(@{$fonts{$lowercase}{installed_by}},
$installable_name);
}
next;
}
}
close $fd;
}
my $data_path = "$basedir/" . $self->location;
my $status = $self->write_file($FONTS, \%fonts,$data_path);
return $status;
}
=back
=head1 AUTHOR
Originally written by Felix Lechner <felix.lechner@lease-up.com> for Lintian.
=head1 SEE ALSO
lintian(1)
=cut
1;
# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et
|
