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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;
# Override Unicode tables for certain control chars
# that are expected to be found in normal text files.
my %force_space = (
0x08 => 1, # backspace
0x09 => 1, # tab
0x0a => 1, # newline
0x0c => 1, # form feed
0x0d => 1, # carriage return
);
exit (main() ? 0 : 1);
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 );
print $header;
my $last_code = 0;
while (<>) {
chomp;
s/#.*//;
my @fields = split /;/;
next if not @fields;
my ($lo_code, $hi_code);
my $codes = $fields[0];
if ($codes =~ /(\w+)\.\.(\w+)/) {
$lo_code = hex $1;
$hi_code = hex $2;
} else {
$lo_code = $hi_code = hex $fields[0];
}
my $type = $fields[$type_field];
$type =~ s/\s//g;
for ($last_code = $lo_code; $last_code <= $hi_code; ++$last_code) {
$type = 'Zs' if $force_space{$last_code};
output(\%out, $last_code, $type);
}
}
output(\%out, $last_code);
return 1;
}
sub output {
my ($out, $code, $type) = @_;
my $type_ok = ($type and ${${$out}{types}}{$type});
$type_ok = not $type_ok if $opt_n;
my $prev_code = $$out{prev_code};
if (not $type_ok) {
end_run($out, $prev_code);
} elsif (not $$out{in_run} or $type ne $$out{run_type} or $code != $prev_code+1) {
end_run($out, $prev_code);
start_run($out, $code, $type);
}
$$out{prev_code} = $code;
}
sub start_run {
my ($out, $code, $type) = @_;
$$out{start_code} = $code;
$$out{prev_code} = $code;
$$out{run_type} = $type;
$$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, $$out{run_type};
$$out{in_run} = 0;
}
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