package utf8;
+use strict;
+use warnings;
-my $DEBUG = 0;
-my $seq = "AAA0000";
+sub DEBUG () { 0 }
sub DESTROY {}
sub croak { require Carp; Carp::croak(@_) }
+my %Cache;
+
+##
+## "SWASH" == "SWATCH HASH". A "swatch" is a swatch of the Unicode landscape
+##
+
sub SWASHNEW {
my ($class, $type, $list, $minbits, $none) = @_;
local $^D = 0 if $^D;
- print STDERR "SWASHNEW @_\n" if $DEBUG;
- 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++;
+ 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;
+ }
- 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 $file.pl");
+ ##
+ ## Last attempt -- see if it's a "To" name (e.g. "ToLower")
+ ##
+ if ($type =~ /^To([A-Z][A-Za-z]+)$/)
+ {
+ $file = "unicore/To/$1.pl";
+ ## would like to test to see if $file actually exists....
+ last GETFILE;
+ }
- $| = 1;
+ ##
+ ## If we reach this line, it's because we couldn't figure
+ ## out what to do with $type. Ouch.
+ ##
+ return $type;
+ }
+
+ print "found it (file='$file')\n" if DEBUG;
+
+ ##
+ ## If we reach here, it was due to a 'last GETFILE' above, 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;
- local $^W = 0;
+ no warnings;
$extras = join '', grep /^[^0-9a-fA-F]/, @tmp;
$list = join '',
sort { hex $a <=> hex $b }
while ($x =~ /^([^0-9a-fA-F\n])(.*)/mg) {
my $char = $1;
my $name = $2;
- # print STDERR "$1 => $2\n" if $DEBUG;
+ 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);
+ 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;
+ print STDERR "CLASS = $class, TYPE => $type, BITS => $bits, NONE => $none\nEXTRAS =>\n$extras\nLIST =>\n$list\n" if DEBUG;
- ${"${class}::{$type}"} = bless {
+ my $SWASH = bless {
TYPE => $type,
BITS => $bits,
EXTRAS => $extras,
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 $DEBUG;
+ print STDERR "SWASHGET @_ [$type/$bits/$none]\n" if DEBUG;
my $end = $start + $len;
my $swatch = "";
my $key;
my $max = (defined $2 ? hex $2 : $min);
my $val = hex $3;
next if $max < $start;
-# print "$min $max $val\n";
+ print "$min $max $val\n" if DEBUG;
if ($none) {
if ($min < $start) {
- $val += $start - $min;
- $val = $none if $val > $none;
+ $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 $DEBUG;
+ print STDERR "$key => $val\n" if DEBUG;
vec($swatch, $key - $start, $bits) = $val;
++$val if $val < $none;
}
}
for ($key = $min; $key <= $max; $key++, $val++) {
last LINE if $key >= $end;
-# print STDERR "$key => $val\n" if $DEBUG;
+ print STDERR "$key => $val\n" if DEBUG;
vec($swatch, $key - $start, $bits) = $val;
}
}
}
for ($key = $min; $key <= $max; $key++) {
last LINE if $key >= $end;
-# print STDERR "$key => 1\n" if $DEBUG;
+ print STDERR "$key => 1\n" if DEBUG;
vec($swatch, $key - $start, 1) = 1;
}
}
while ($x =~ /^([-+!])(.*)/mg) {
my $char = $1;
my $name = $2;
- print STDERR "INDIRECT $1 $2\n" if $DEBUG;
+ 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, $len);
}
}
}
- if ($DEBUG) {
+ if (DEBUG) {
print STDERR "CELLS ";
for ($key = 0; $key < $len; $key++) {
print STDERR vec($swatch, $key, $bits), " ";
projects / p5sagit/p5-mst-13.2.git / blobdiff