X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Futf8_heavy.pl;h=1839d2144f125697a486c0f01951a379475e8dff;hb=83272a45226e83bd136d713158e9b44ace2dbc8d;hp=bbc082b1e022d0b31ba5451268420bab27169004;hpb=d73e53025d089803adeff195eaa8b562b9f4d911;p=p5sagit%2Fp5-mst-13.2.git diff --git a/lib/utf8_heavy.pl b/lib/utf8_heavy.pl index bbc082b..1839d21 100644 --- a/lib/utf8_heavy.pl +++ b/lib/utf8_heavy.pl @@ -1,102 +1,149 @@ 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 $^D; print STDERR "SWASHNEW @_\n" if DEBUG; - if ($type and ref ${"${class}::{$type}"} eq $class) { - warn qq/Found \${"${class}::{$type}"}\n/ if DEBUG; - return ${"${class}::{$type}"}; # Already there... - } + ## + ## 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; - - my $file; - - unless (defined $file) { - defined %utf8::Is || do "unicore/Is.pl"; - if ($type =~ /^(?:Is)?[- _]?([A-Z].*)$/i) { - my $istype = $1; - print "istype = $istype\n" if DEBUG; - unless ($list = do "unicore/Is/$istype.pl") { - if (exists $utf8::Is{$istype}) { - $file = "unicore/Is/$utf8::Is{$istype}"; - } else { - my $isprefix = substr(lc($istype), 0, 2); - print "isprefix = $isprefix\n" if DEBUG; - if (exists $utf8::IsPat{$isprefix}) { - my $Is = $istype; - print "isprefix = $isprefix, Is = $Is\n" if DEBUG; - for my $k (keys %{$utf8::IsPat{$isprefix}}) { - print "isprefix = $isprefix, Is = $Is, k = $k\n" if DEBUG; - if ($Is =~ /^$k$/i) { - $file = "unicore/Is/$utf8::IsPat{$isprefix}->{$k}"; - print "isprefix = $isprefix, Is = $Is, k = $k, file = $file\n" if DEBUG; - last; - } - } - } - } - } - } - - unless (defined $file) { - defined %utf8::In || do "unicore/In.pl"; - $type = 'Lampersand' if $type =~ /^(?:Is)?L&$/; - if ($type =~ /^(?:In)?[- _]?(?!herited$)(.+)/i) { - my $intype = $1; - print "intype = $intype\n" if DEBUG; - if (exists $utf8::Is{$istype}) { - $file = "unicore/In/$utf8::In{$intype}"; - } else { - my $inprefix = substr(lc($intype), 0, 2); - print "inprefix = $inprefix\n" if DEBUG; - if (exists $utf8::InPat{$inprefix}) { - my $In = $intype; - print "inprefix = $inprefix, In = $In\n" if DEBUG; - for my $k (keys %{$utf8::InPat{$inprefix}}) { - print "inprefix = $inprefix, In = $In, k = $k\n" if DEBUG; - if ($In =~ /^$k$/i) { - $file = "unicore/In/$utf8::InPat{$inprefix}->{$k}"; - print "inprefix = $inprefix, In = $In, k = $k, file = $file\n" if DEBUG; - last; - } - } - } - } - } - } + if ($type) + { + $type =~ s/^\s+//; + $type =~ s/\s+$//; - unless (defined $file) { - if ($type =~ /^To([A-Z][A-Za-z]+)$/) { - $file = "unicore/To/$1"; - } - } - } + 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) { - $list = do "$file.pl"; + 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 $file; } - croak("Can't find Unicode character property \"$type\"") - unless $list; + $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; @@ -137,7 +184,14 @@ sub SWASHNEW { 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); + 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}; } @@ -146,7 +200,7 @@ sub SWASHNEW { 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, @@ -154,11 +208,18 @@ sub SWASHNEW { 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}; @@ -210,7 +271,7 @@ sub SWASHGET { } else { LINE: - while (/^([0-9a-fA-F]+)(?:\t([0-9a-fA-F]+))?/mg) { + 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;