/usr/share/perl5/Font/TTF/Glat.pm is in libfont-ttf-perl 1.04-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | package Font::TTF::Glat;
=head1 NAME
Font::TTF::Glat - Hold glyph attributes
=head1 DESCRIPTION
Holds glyph attributes associated with each glyph.
=over 4
=item Version
Table format version
=item attribs
An array of hashes. On array entry for each glyph id. Since the glyph attributes are usually in a sparse
array, they are stored in a hash keyed by the attribute id and with the value as attribute value.
=cut
use Font::TTF::Table;
use Font::TTF::Utils;
use strict;
use vars qw(@ISA);
@ISA = qw(Font::TTF::Table);
sub read
{
my ($self) = @_;
my ($gloc) = $self->{' PARENT'}{'Gloc'};
my ($fh) = $self->{' INFILE'};
my ($numGlyphs);
my ($base) = $self->{' OFFSET'};
my ($dat, $i);
$self->SUPER::read or return $self;
$gloc->read;
$numGlyphs = $gloc->{'numGlyphs'};
$fh->seek($base, 0);
$fh->read($dat, 4);
($self->{'Version'}) = TTF_Unpack('v', $dat);
for ($i = 0; $i < $numGlyphs; $i++)
{
my ($j) = 0;
my ($num) = $gloc->{'locations'}[$i + 1] - $gloc->{'locations'}[$i];
my ($first, $number, @vals);
$fh->seek($base + $gloc->{'locations'}[$i], 0);
$fh->read($dat, $num);
while ($j < $num)
{
if ($self->{'Version'} > 1)
{
($first, $number) = unpack("n2", substr($dat, $j, 4));
@vals = unpack("n$number", substr($dat, $j + 4, $number * 2));
$j += ($number + 2) * 2;
}
else
{
($first, $number) = unpack("C2", substr($dat, $j, 2));
@vals = unpack("n$number", substr($dat, $j + 2, $number * 2));
$j += $number * 2 + 2;
}
for (my $k = 0; $k < $number; $k++)
{ $self->{'attribs'}[$i]{$first + $k} = $vals[$k]; }
}
}
}
sub out
{
my ($self, $fh) = @_;
my ($gloc) = $self->{' PARENT'}{'Gloc'};
my ($numGlyphs) = 0;
my ($base) = $fh->tell();
my ($i, $type);
return $self->SUPER::out($fh) unless ($self->{' read'});
$numGlyphs = scalar @{$self->{'attribs'}};
if ($gloc->{'numAttrib'} > 256)
{
$self->{'Version'} = 2;
$type = "n";
}
else
{
$self->{'Version'} = 1;
$type = "C";
}
$gloc->{'locations'} = [];
$fh->print(TTF_Pack('v', $self->{'Version'}));
for ($i = 0; $i < $numGlyphs; $i++)
{
my (@a) = sort {$a <=> $b} keys %{$self->{'attribs'}[$i]};
push(@{$gloc->{'locations'}}, $fh->tell() - $base);
while (@a)
{
my ($first) = shift(@a);
my ($next) = $first;
my (@v, $j);
while (@a and $a[0] <= $next + 2)
{ $next = shift(@a); }
for ($j = $first; $j <= $next; $j++)
{ push (@v, $self->{'attribs'}[$i]{$j}); }
{ $fh->print(pack("${type}2n*", $first, $next - $first + 1, @v)); }
}
}
push(@{$gloc->{'locations'}}, $fh->tell() - $base);
}
=back
=head2 $t->minsize()
Returns the minimum size this table can be. If it is smaller than this, then the table
must be bad and should be deleted or whatever.
=cut
sub minsize
{
return 4;
}
1;
=head1 AUTHOR
Martin Hosken L<Martin_Hosken@sil.org>.
=head1 LICENSING
Copyright (c) 1998-2013, 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.
=cut
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