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#! /usr/bin/perl
use strict;
my $USAGE = <<__EOF__;
usage: mkutable [-n] [-f#] type... [--] [<] UnicodeData.txt
-n = take non-matching types
-f = zero-based type field (default 2)
__EOF__
use vars qw( $opt_f $opt_n );
use Getopt::Std;
my $type_field = 2;
exit (main() ? 1 : 0);
sub main {
my $date = `date`;
chomp $date;
my $args = join ' ', @ARGV;
my $header = "/* Generated by \"$0 $args\" on $date */\n";
die $USAGE if not getopts('f:n');
$type_field = $opt_f if $opt_f;
my %types;
my $arg;
while ($arg = shift @ARGV) {
last if $arg eq '--';
$types{$arg} = 1;
}
my %out = ( 'types' => \%types );
my $last_code = 0;
print $header;
while (<>) {
chomp;
s/#.*//;
my @fields = split /;/;
next if not @fields;
my $code = hex $fields[0];
my $type = $fields[$type_field];
$type =~ s/\s//g;
while (++$last_code < $code) {
output(\%out, $last_code, '?');
}
output(\%out, $code, $type);
}
output(\%out, $last_code+1, '?');
}
sub output {
my ($out, $code, $type) = @_;
my $match = ${${$out}{types}}{$type};
my $type_change = (not $$out{start_type} or $type ne $$out{start_type});
$match = not $match if $opt_n;
if ($match and (not $$out{in_run} or $type_change)) {
end_run($out, $code-1);
start_run($out, $code, $type);
} elsif (not $match and $$out{in_run}) {
end_run($out, $code-1);
}
}
sub start_run {
my ($out, $code, $type) = @_;
$$out{start_code} = $code;
$$out{start_type} = $type;
$$out{in_run} = 1;
}
sub end_run {
my ($out, $code) = @_;
return if not $$out{in_run};
printf "\t{ 0x%04x, 0x%04x }, /* %s */\n", $$out{start_code}, $code, $$out{start_type};
$$out{in_run} = 0;
}
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