package utf8; my $DEBUG = 0; my $seq = "AAA0000"; sub DESTROY {} sub croak { require Carp; Carp::croak(@_) } sub SWASHNEW { my ($class, $type, $list, $minbits, $none) = @_; local $^D = 0 if $^D; print STDERR "SWASHNEW @_\n" if $DEBUG; my $extras; my $bits; if ($type and ref ${"${class}::{$type}"} eq $class) { warn qq/Found \${"${class}::{$type}"}\n/ if $DEBUG; return ${"${class}::{$type}"}; # Already there... } $type ||= $seq++; my $caller; my $i = 0; while (($caller = caller($i)) eq __PACKAGE__) { $i++ } my $encoding = $enc{$caller} || "unicode"; (my $file = $type) =~ s!::!/!g; $file =~ s#^(I[sn]|To)([A-Z].*)#$1/$2#; $list ||= eval { $caller->$type(); } || do "$file.pl" || do "$encoding/$file.pl" || do "$encoding/Is/${type}.pl" || croak("Can't find $encoding character property definition via $caller->$type or $file.pl"); $| = 1; if ($list) { my @tmp = split(/^/m, $list); my %seen; no warnings; $extras = join '', grep /^[^0-9a-fA-F]/, @tmp; $list = join '', sort { hex $a <=> hex $b } grep {/^([0-9a-fA-F]+)/ and not $seen{$1}++} @tmp; # XXX doesn't do ranges right } if ($none) { my $hextra = sprintf "%04x", $none + 1; $list =~ s/\tXXXX$/\t$hextra/mg; } if ($minbits < 32) { my $top = 0; while ($list =~ /^([0-9a-fA-F]+)(?:\t([0-9a-fA-F]+)?)(?:\t([0-9a-fA-F]+))?/mg) { my $min = hex $1; my $max = hex(defined $2 ? $2 : $1); my $val = hex(defined $3 ? $3 : ""); $val += $max - $min if defined $3; $top = $val if $val > $top; } $bits = $top > 0xffff ? 32 : $top > 0xff ? 16 : $top > 1 ? 8 : 1 } $bits = $minbits if $bits < $minbits; my @extras; for my $x ($extras) { pos $x = 0; while ($x =~ /^([^0-9a-fA-F\n])(.*)/mg) { my $char = $1; my $name = $2; # print STDERR "$1 => $2\n" if $DEBUG; if ($char =~ /[-+!]/) { my ($c,$t) = split(/::/, $name, 2); # bogus use of ::, really my $subobj = $c->SWASHNEW($t, "", 0, 0, 0); push @extras, $name => $subobj; $bits = $subobj->{BITS} if $bits < $subobj->{BITS}; } } } print STDERR "CLASS = $class, TYPE => $type, BITS => $bits, NONE => $none\nEXTRAS =>\n$extras\nLIST =>\n$list\n" if $DEBUG; ${"${class}::{$type}"} = bless { TYPE => $type, BITS => $bits, EXTRAS => $extras, LIST => $list, NONE => $none, @extras, } => $class; } # NOTE: utf8.c:swash_init() assumes entries are never modified once generated. sub SWASHGET { my ($self, $start, $len) = @_; local $^D = 0 if $^D; my $type = $self->{TYPE}; my $bits = $self->{BITS}; my $none = $self->{NONE}; print STDERR "SWASHGET @_ [$type/$bits/$none]\n" if $DEBUG; my $end = $start + $len; my $swatch = ""; my $key; vec($swatch, $len - 1, $bits) = 0; # Extend to correct length. if ($none) { for $key (0 .. $len - 1) { vec($swatch, $key, $bits) = $none } } for ($self->{LIST}) { pos $_ = 0; if ($bits > 1) { LINE: while (/^([0-9a-fA-F]+)(?:\t([0-9a-fA-F]+)?)(?:\t([0-9a-fA-F]+))?/mg) { my $min = hex $1; my $max = (defined $2 ? hex $2 : $min); my $val = hex $3; next if $max < $start; # print "$min $max $val\n"; if ($none) { if ($min < $start) { $val += $start - $min if $val < $none; $min = $start; } for ($key = $min; $key <= $max; $key++) { last LINE if $key >= $end; # print STDERR "$key => $val\n" if $DEBUG; vec($swatch, $key - $start, $bits) = $val; ++$val if $val < $none; } } else { if ($min < $start) { $val += $start - $min; $min = $start; } for ($key = $min; $key <= $max; $key++, $val++) { last LINE if $key >= $end; # print STDERR "$key => $val\n" if $DEBUG; vec($swatch, $key - $start, $bits) = $val; } } } } else { LINE: while (/^([0-9a-fA-F]+)(?:\t([0-9a-fA-F]+))?/mg) { my $min = hex $1; my $max = (defined $2 ? hex $2 : $min); next if $max < $start; if ($min < $start) { $min = $start; } for ($key = $min; $key <= $max; $key++) { last LINE if $key >= $end; # print STDERR "$key => 1\n" if $DEBUG; vec($swatch, $key - $start, 1) = 1; } } } } for my $x ($self->{EXTRAS}) { pos $x = 0; while ($x =~ /^([-+!])(.*)/mg) { my $char = $1; my $name = $2; print STDERR "INDIRECT $1 $2\n" if $DEBUG; my $otherbits = $self->{$name}->{BITS}; croak("SWASHGET size mismatch") if $bits < $otherbits; my $other = $self->{$name}->SWASHGET($start, $len); if ($char eq '+') { if ($bits == 1 and $otherbits == 1) { $swatch |= $other; } else { for ($key = 0; $key < $len; $key++) { vec($swatch, $key, $bits) = vec($other, $key, $otherbits); } } } elsif ($char eq '!') { if ($bits == 1 and $otherbits == 1) { $swatch |= ~$other; } else { for ($key = 0; $key < $len; $key++) { if (!vec($other, $key, $otherbits)) { vec($swatch, $key, $bits) = 1; } } } } elsif ($char eq '-') { if ($bits == 1 and $otherbits == 1) { $swatch &= ~$other; } else { for ($key = 0; $key < $len; $key++) { if (vec($other, $key, $otherbits)) { vec($swatch, $key, $bits) = 0; } } } } } } if ($DEBUG) { print STDERR "CELLS "; for ($key = 0; $key < $len; $key++) { print STDERR vec($swatch, $key, $bits), " "; } print STDERR "\n"; } $swatch; } 1;