144 lines
3.2 KiB
Perl
144 lines
3.2 KiB
Perl
package Font::TTF::Sill;
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=head1 NAME
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Font::TTF::Sill - Graphite language mapping table
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=head1 DESCRIPTION
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=head1 INSTANCE VARIABLES
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=over 4
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=item version
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Table version number.
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=item langs
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Contains a hash where the key is the language id and the value is an array of
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language records
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=back
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=head2 Language Records
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Each language record is itself an array of two values [fid, val]. fid is the
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feature id and is held as a long.
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=cut
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use Font::TTF::Utils;
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require Font::TTF::Table;
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@ISA = qw(Font::TTF::Table);
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sub read
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{
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my ($self) = @_;
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my ($num, $i, $j);
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return $self if ($self->{' read'});
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$self->SUPER::read_dat or return $self;
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($self->{'version'}, $num) = TTF_Unpack("vS", $self->{' dat'});
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foreach $i (1 .. $num) # ignore bogus entry at end
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{
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my ($lid, $numf, $offset) = unpack("A4nn", substr($self->{' dat'}, $i * 8 + 4)); # 12 - 8 = 4 since i starts at 1. A4 strips nulls
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my (@settings);
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foreach $j (1 .. $numf)
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{
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my ($fid, $val) = TTF_Unpack("Ls", substr($self->{' dat'}, $offset + $j * 8 - 8));
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push (@settings, [$fid, $val]);
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}
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$self->{'langs'}{$lid} = [@settings];
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}
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delete $self->{' dat'};
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$self->{' read'} = 1;
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$self;
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}
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sub out
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{
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my ($self, $fh) = @_;
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my ($num, $range, $select, $shift) = TTF_bininfo(scalar keys %{$self->{'langs'}}, 1);
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my ($offset) = $num * 8 + 20; #header = 12, dummy = 8
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my ($k, $s);
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return $self->SUPER::out($fh) unless ($self->{' read'});
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$fh->print(TTF_Pack("vSSSS", $self->{'version'}, $num, $range, $select, $shift));
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foreach $k ((sort keys %{$self->{'langs'}}), '+1')
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{
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my ($numf) = scalar @{$self->{'langs'}{$k}} unless ($k eq '+1');
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$fh->print(pack("a4nn", $k, $numf, $offset));
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$offset += $numf * 8;
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}
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foreach $k (sort keys %{$self->{'langs'}})
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{
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foreach $s (@{$self->{'langs'}{$k}})
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{ $fh->print(TTF_Pack("LsS", @{$s}, 0)); }
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}
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$self;
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}
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sub XML_element
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{
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my ($self) = shift;
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my ($context, $depth, $key, $dat) = @_;
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my ($fh) = $context->{'fh'};
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my ($k, $s);
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return $self->SUPER::XML_element(@_) unless ($key eq 'langs');
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foreach $k (sort keys %{$self->{'langs'}})
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{
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$fh->printf("%s<lang id='%s'>\n", $depth, $k);
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foreach $s (@{$self->{'langs'}{$k}})
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{
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my ($fid) = $s->[0];
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if ($fid > 0x00FFFFFF)
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{ $fid = unpack("A4", pack ("N", $fid)); }
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else
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{ $fid = sprintf("%d", $fid); }
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$fh->printf("%s%s<feature id='%s' value='%d'/>\n",
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$depth, $context->{'indent'}, $fid, $s->[1]);
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}
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$fh->printf("%s</lang>\n", $depth);
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}
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$self;
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}
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=head2 $t->minsize()
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Returns the minimum size this table can be. If it is smaller than this, then the table
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must be bad and should be deleted or whatever.
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=cut
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sub minsize
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{
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return 6;
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}
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1;
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=head1 AUTHOR
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Martin Hosken L<http://scripts.sil.org/FontUtils>.
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=head1 LICENSING
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Copyright (c) 1998-2016, SIL International (http://www.sil.org)
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This module is released under the terms of the Artistic License 2.0.
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For details, see the full text of the license in the file LICENSE.
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=cut
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