use utf8;
use open IO => ':encoding(utf-8)', ':std';
use re '/msx';
+use JSON 'decode_json';
use Data::Dump 'pp';
+use Shiar_Sheet::FormatChar;
our $VERSION = '1.01';
-my $keysymh;
-open $keysymh, '<', 'data/keysymdef.h'
- or open $keysymh, '<', '/usr/include/X11/keysymdef.h'
- or die "Could not find keysym definitions: $!\n";
-
-my %keysym;
-while (readline $keysymh) {
- m{
- \A [#]define[ ]XK_ (?<name>[a-zA-Z_0-9]+)
- \h+ 0x(?<value>[0-9a-f]+)
- \h* [/][*] [\h(] U[+] (?<unicode>[0-9A-F]{4,6})
- } or next;
- $keysym{ $+{name} } = chr hex $+{unicode};
-}
+my $matchvim; # enable to prefer best compatibility
+
+my $symname = eval {
+ open my $keysymh, '<', 'data/keysymdef.json' or die $!;
+ local $/;
+ return decode_json(readline $keysymh);
+} or die "Could not read keysym definitions: $@\n";
-say "# automatically generated by $0";
-say '+{';
+my $vidi = eval {
+ open my $jsfh, '<', 'data/digraphs.json' or die $!;
+ local $/;
+ return JSON->new->decode(readline $jsfh);
+} or warn "Could not read comparison digraphs: $@\n";
+my %table;
while ($_ = readline) {
my ($mnem, $chr, $trail) = m/\A <Multi_key> \h (.*?) \h+ : \h "([^"]+)" \h* (.*)/
or next;
$chr =~ s/\\(.)/$1/g;
$mnem !~ m/<dead | <KP_ | <U[0-9A-Fa-f]{4}/ or next; # skip non-standard keys
- $mnem =~ s{<([^>]+)> \h?}{$keysym{$1} // die "reference to unknown keysym $1\n"}eg;
- $mnem !~ m/[^\x20-\x7F]/ or next; # skip unicode
-# (state $seen = {})->{$chr}++ and next;
- printf "%s => %s,\n", pp($mnem), pp($chr);
+ eval {
+ $mnem =~ s{<([^>]+)> \h?}{$symname->{$1} // die "reference to unknown keysym $1\n"}eg;
+ 1;
+ } or warn($@), next;
+ $mnem =~ m/\A [\x20-\x7F]{2} \z/ or next; # only interested in two ascii
+
+ my $alias = \(state $seen = {})->{$chr}; # assume first is preferred
+ my $cp = ord $chr;
+ my ($class, $name, undef, undef, $string) = @{
+ Shiar_Sheet::FormatChar->glyph_info($cp)
+ };
+ my $comparison = (
+ !$vidi->{key}->{$mnem} ? 'l3' : # free
+ $vidi->{key}->{$mnem}->[0] != $cp ? 'l1' : # conflict
+ $vidi->{key}->{$mnem}->[2] eq 'l5' ? 'l5' : # rfc
+ 'l4' # any
+ );
+
+ if (${$alias}) {
+ # aliases an earlier occurrence
+ if ($matchvim and ${$alias}->[2] lt $comparison) {
+ # replace lower compatibility level
+ ${$alias}->[3] = 'l0';
+ ${$alias}->[2] .= ' u-' . ${$alias}->[2];
+ ${$alias} = undef;
+ }
+ else {
+ $class = 'l0';
+ my $menm = substr($mnem, 1, 1).substr($mnem, 0, 1);
+ if ($table{$menm} && $table{$menm}[0] == $cp) {
+ # unannotated if identical to reversed input
+ $cp = 0;
+ }
+ else {
+ $class .= ' ex';
+ }
+ }
+ }
+
+ $table{$mnem} = [ $cp, $name, $comparison, $class, $string // () ];
+ ${$alias} //= $table{$mnem};
}
-say '}';
+print JSON->new->canonical->indent->encode({
+ title => 'X.Org',
+ key => \%table,
+ intro => join("\n",
+ 'Character mnemonics following compose key ⎄:',
+ 'in the X Window System (Shift+AltGr by default).',
+ 'Differences from <a href="/digraphs">RFC-1345</a> are indicated.',
+ 'Also see <a href="/unicode">common Unicode</a>.',
+ ),
+ keywords => [qw( xorg x11 x )],
+ flag => {
+ 'l5' => "matching RFC-1345",
+ 'l4' => "matching Vim extension",
+ 'l3' => "unique to Xorg",
+ 'l1' => "conflict",
+ ('l0' => "Xorg preference") x !!$matchvim,
+ 'l0 ex' => "alias",
+ },
+ flagclass => {
+ l5 => 'u-l4',
+ l4 => 'u-l5',
+ },
+});
__END__
=head1 SYNOPSIS
- mkdigraphs-xorg /usr/share/X11/locale/en_US.UTF-8/Compose >digraphs-xorg.inc.pl
- perl -e'$di = do "digraphs-xorg.inc.pl"; print chr $di->{AT}'
+ mkdigraphs-xorg /usr/share/X11/locale/en_US.UTF-8/Compose |
+ jq -r '.key."AT"[0]' | perl -nE 'say chr' # @
=head1 DESCRIPTION
Extracts Multi_key definitions from X11/Xorg Compose.pre include file.
-If successful, Perl code is output resulting in a hash
+If successful, a JSON object is output containing a digraphs list in C<key>
with Unicode code points keyed by mnemonics.
Any errors and warnings are given at STDERR.