From fbf4a6e8014789c67a381e0b4f05de5bdadbce24 Mon Sep 17 00:00:00 2001 From: Staszek Wawrykiewicz Date: Mon, 18 Dec 2006 03:24:34 +0000 Subject: perltl added git-svn-id: svn://tug.org/texlive/trunk@2778 c570f23f-e606-0410-a88d-b1316a301751 --- Master/perltl/lib/utf8_heavy.pl | 344 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 344 insertions(+) create mode 100644 Master/perltl/lib/utf8_heavy.pl (limited to 'Master/perltl/lib/utf8_heavy.pl') diff --git a/Master/perltl/lib/utf8_heavy.pl b/Master/perltl/lib/utf8_heavy.pl new file mode 100644 index 00000000000..1839d2144f1 --- /dev/null +++ b/Master/perltl/lib/utf8_heavy.pl @@ -0,0 +1,344 @@ +package utf8; +use strict; +use warnings; + +sub DEBUG () { 0 } + +sub DESTROY {} + +my %Cache; + +sub croak { require Carp; Carp::croak(@_) } + +## +## "SWASH" == "SWATCH HASH". A "swatch" is a swatch of the Unicode landscape +## + +sub SWASHNEW { + my ($class, $type, $list, $minbits, $none) = @_; + local $^D = 0 if $^D; + + print STDERR "SWASHNEW @_\n" if DEBUG; + + ## + ## Get the list of codepoints for the type. + ## Called from utf8.c + ## + ## Given a $type, our goal is to fill $list with the set of codepoint + ## ranges. + ## + ## To make the parsing of $type clear, this code takes the a rather + ## unorthadox approach of last'ing out of the block once we have the + ## info we need. Were this to be a subroutine, the 'last' would just + ## be a 'return'. + ## + my $file; ## file to load data from, and also part of the %Cache key. + my $ListSorted = 0; + + if ($type) + { + $type =~ s/^\s+//; + $type =~ s/\s+$//; + + print "type = $type\n" if DEBUG; + + GETFILE: + { + ## + ## 'Is' is always optional, so if it's there, remove it. + ## Same with 'Category=' and 'Script='. + ## + ## 'Block=' is replaced by 'In'. + ## + $type =~ s/^Is(?:\s+|[-_])?//i + or + $type =~ s/^Category\s*=\s*//i + or + $type =~ s/^Script\s*=\s*//i + or + $type =~ s/^Block\s*=\s*/In/i; + + ## + ## See if it's in the direct mapping table. + ## + require "unicore/Exact.pl"; + if (my $base = $utf8::Exact{$type}) { + $file = "unicore/lib/$base.pl"; + last GETFILE; + } + + ## + ## If not there exactly, try the canonical form. The canonical + ## form is lowercased, with any separators (\s+|[-_]) removed. + ## + my $canonical = lc $type; + $canonical =~ s/(?<=[a-z\d])(?:\s+|[-_])(?=[a-z\d])//g; + print "canonical = $canonical\n" if DEBUG; + + require "unicore/Canonical.pl"; + if (my $base = $utf8::Canonical{$canonical}) { + $file = "unicore/lib/$base.pl"; + last GETFILE; + } + + ## + ## It could be a user-defined property. + ## + + if ($type =~ /^I[ns](\w+)$/) { + my @caller = caller(1); + + if (defined $caller[0]) { + my $prop = $caller[0] . "::" . $type; + + if (exists &{$prop}) { + no strict 'refs'; + + $list = &{$prop}; + last GETFILE; + } + } + } + + ## + ## Last attempt -- see if it's a "To" name (e.g. "ToLower") + ## + if ($type =~ /^To([A-Z][A-Za-z]+)$/) + { + $file = "unicore/To/$1.pl"; + ## would like to test to see if $file actually exists.... + last GETFILE; + } + + ## + ## If we reach this line, it's because we couldn't figure + ## out what to do with $type. Ouch. + ## + + return $type; + } + + if (defined $file) { + print "found it (file='$file')\n" if DEBUG; + + ## + ## If we reach here, it was due to a 'last GETFILE' above + ## (exception: user-defined properties), so we + ## have a filename, so now we load it if we haven't already. + ## If we have, return the cached results. The cache key is the + ## file to load. + ## + if ($Cache{$file} and ref($Cache{$file}) eq $class) + { + print "Returning cached '$file' for \\p{$type}\n" if DEBUG; + return $Cache{$class, $file}; + } + + $list = do $file; + } + + $ListSorted = 1; ## we know that these lists are sorted + } + + my $extras; + my $bits; + + my $ORIG = $list; + if ($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 $subobj; + if ($c eq 'utf8') { + $subobj = $c->SWASHNEW($t, "", 0, 0, 0); + } + elsif ($c =~ /^([0-9a-fA-F]+)/) { + $subobj = utf8->SWASHNEW("", $c, 0, 0, 0); + } + return $subobj unless ref $subobj; + 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; + + my $SWASH = bless { + TYPE => $type, + BITS => $bits, + EXTRAS => $extras, + LIST => $list, + NONE => $none, + @extras, + } => $class; + + if ($file) { + $Cache{$class, $file} = $SWASH; + } + + return $SWASH; +} + +# NOTE: utf8.c:swash_init() assumes entries are never modified once generated. + +sub SWASHGET { + # See utf8.c:Perl_swash_fetch for problems with this interface. + my ($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 $val\n" if DEBUG; + if ($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; -- cgit v1.2.3