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https://github.com/freebsd/freebsd-src
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126 lines
3.2 KiB
Perl
Executable file
126 lines
3.2 KiB
Perl
Executable file
#!/usr/bin/env perl
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use strict;
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my $USAGE = <<__EOF__;
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usage: mkutable [-n] [-f#] type... [--] [<] UnicodeData.txt
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-n = take non-matching types
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-f = zero-based type field (default 2)
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__EOF__
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use Getopt::Std;
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use vars qw( $opt_f $opt_n );
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my $type_field = 2;
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# Override Unicode tables for certain control chars
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# that are expected to be found in normal text files.
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my %force_space = (
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0x08 => 1, # backspace
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0x09 => 1, # tab
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0x0a => 1, # newline
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0x0c => 1, # form feed
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0x0d => 1, # carriage return
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);
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# Hangul Jamo medial vowels and final consonants should be zero width.
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my @force_compose = (
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[0x1160, 0x11ff],
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[0xd7b0, 0xd7c6],
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[0xd7cb, 0xd7fb]
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);
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exit (main() ? 0 : 1);
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sub main {
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my $args = join ' ', @ARGV;
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die $USAGE if not getopts('f:n');
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$type_field = $opt_f if $opt_f;
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my %types;
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my $arg;
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while ($arg = shift @ARGV) {
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last if $arg eq '--';
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$types{$arg} = 1;
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}
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my %out = ( 'types' => \%types );
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my %force_compose;
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foreach my $comp (@force_compose) {
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my ($lo,$hi) = @$comp;
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for (my $ch = $lo; $ch <= $hi; ++$ch) {
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$force_compose{$ch} = 1;
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}
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}
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my $date = `date`;
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chomp $date;
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print "/* Generated by \"$0 $args\" on $date */\n";
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my $last_code = 0;
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my $start_range = 0;
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while (<>) {
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chomp;
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s/#.*//;
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my @fields = split /;/;
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next if not @fields;
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my ($lo_code, $hi_code);
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my $codes = $fields[0];
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if ($codes =~ /(\w+)\.\.(\w+)/) {
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$lo_code = hex $1;
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$hi_code = hex $2;
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} else {
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$lo_code = $hi_code = hex $codes;
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}
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if ($fields[1] =~ /, First>$/) {
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die "invalid Unicode data: First with range" if $hi_code != $lo_code;
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$start_range = $lo_code;
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next;
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}
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if ($fields[1] =~ /, Last>$/) {
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die "invalid Unicode data: Last without First" if not $start_range;
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$lo_code = $start_range;
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$start_range = 0;
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} elsif ($start_range) {
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die "invalid Unicode data: First without Last";
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}
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my $type = $fields[$type_field];
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$type =~ s/\s//g;
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for ($last_code = $lo_code; $last_code <= $hi_code; ++$last_code) {
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output(\%out, $last_code,
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$force_space{$last_code} ? 'Zs' : $force_compose{$last_code} ? 'Mn' : $type);
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}
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}
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output(\%out, $last_code);
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return 1;
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}
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sub output {
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my ($out, $code, $type) = @_;
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my $type_ok = ($type and ${${$out}{types}}{$type});
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$type_ok = not $type_ok if $opt_n;
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my $prev_code = $$out{prev_code};
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if (not $type_ok) {
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end_run($out, $prev_code);
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} elsif (not $$out{in_run} or $type ne $$out{run_type} or $code != $prev_code+1) {
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end_run($out, $prev_code);
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start_run($out, $code, $type);
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}
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$$out{prev_code} = $code;
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}
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sub start_run {
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my ($out, $code, $type) = @_;
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$$out{start_code} = $code;
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$$out{prev_code} = $code;
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$$out{run_type} = $type;
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$$out{in_run} = 1;
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}
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sub end_run {
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my ($out, $code) = @_;
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return if not $$out{in_run};
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printf "\t{ 0x%04x, 0x%04x }, /* %s */\n", $$out{start_code}, $code, $$out{run_type};
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$$out{in_run} = 0;
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}
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