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#!/usr/bin/env perl
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# This tool is used to extract "special" (one-to-many) case mappings
# into a form that can be used by nsTextRunTransformations.
use strict;
if ($#ARGV != 1) {
print <<__EOT;
# Run this tool using a command line of the form
#
# perl genSpecialCasingData.pl UnicodeData.txt SpecialCasing.txt
#
# The nsSpecialCasingData.cpp file will be written to standard output.
#
# This tool will also write up-to-date versions of the test files
# all-{upper,lower,title}.html
# and corresponding -ref files in the current directory.
#
__EOT
exit 0;
}
my %allLower;
my %allUpper;
my %allTitle;
my %compositions;
my %gc;
open FH, "< $ARGV[0]" or die "can't open $ARGV[0] (should be UnicodeData.txt)\n";
while (<FH>) {
chomp;
my @fields = split /;/;
next if ($fields[1] =~ /</); # ignore ranges etc
my $usv = hex "0x$fields[0]";
$allUpper{$usv} = $fields[12] if $fields[12] ne '';
$allLower{$usv} = $fields[13] if $fields[13] ne '';
$allTitle{$usv} = $fields[14] if $fields[14] ne '';
$gc{$usv} = $fields[2];
# we only care about non-singleton canonical decomps
my $decomp = $fields[5];
next if $decomp eq '' or $decomp =~ /</ or not $decomp =~ / /;
$compositions{$decomp} = sprintf("%04X", $usv);
}
close FH;
my %specialLower;
my %specialUpper;
my %specialTitle;
my %charName;
my @headerLines;
open FH, "< $ARGV[1]" or die "can't open $ARGV[1] (should be SpecialCasing.txt)\n";
while (<FH>) {
chomp;
m/#\s*(.+)$/;
my $comment = $1;
if ($comment =~ /^(SpecialCasing-|Date:)/) {
push @headerLines, $comment;
next;
}
s/#.*//;
s/;\s*$//;
next if $_ eq '';
my @fields = split /; */;
next unless (scalar @fields) == 4;
my $usv = hex "0x$fields[0]";
addIfSpecial(\%specialLower, $usv, $fields[1]);
addIfSpecial(\%specialTitle, $usv, $fields[2]);
addIfSpecial(\%specialUpper, $usv, $fields[3]);
$charName{$usv} = $comment;
}
close FH;
print <<__END__;
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
/* Auto-generated from files in the Unicode Character Database
by genSpecialCasingData.pl - do not edit! */
#include "nsSpecialCasingData.h"
#include "mozilla/ArrayUtils.h" // for ArrayLength
#include <stdlib.h> // for bsearch
__END__
map { print "/* $_ */\n" } @headerLines;
print <<__END__;
using mozilla::unicode::MultiCharMapping;
__END__
printMappings('Lower', \%specialLower);
printMappings('Upper', \%specialUpper);
printMappings('Title', \%specialTitle);
print <<__END__;
static int CompareMCM(const void* aKey, const void* aElement)
{
const uint32_t ch = *static_cast<const uint32_t*>(aKey);
const MultiCharMapping* mcm = static_cast<const MultiCharMapping*>(aElement);
return int(ch) - int(mcm->mOriginalChar);
}
#define MAKE_SPECIAL_CASE_ACCESSOR(which) \\
const MultiCharMapping* \\
Special##which(uint32_t aChar) \\
{ \\
const void* p = bsearch(&aChar, CaseSpecials_##which, \\
std::size(CaseSpecials_##which), \\
sizeof(MultiCharMapping), CompareMCM); \\
return static_cast<const MultiCharMapping*>(p); \\
}
namespace mozilla {
namespace unicode {
MAKE_SPECIAL_CASE_ACCESSOR(Lower)
MAKE_SPECIAL_CASE_ACCESSOR(Upper)
MAKE_SPECIAL_CASE_ACCESSOR(Title)
} // namespace unicode
} // namespace mozilla
__END__
addSpecialsTo(\%allLower, \%specialLower);
addSpecialsTo(\%allUpper, \%specialUpper);
addSpecialsTo(\%allTitle, \%specialTitle);
my $testFont = "../fonts/dejavu-sans/DejaVuSans.ttf";
genTest('lower', \%allLower);
genTest('upper', \%allUpper);
genTitleTest();
sub printMappings {
my ($whichMapping, $hash) = @_;
print "static const MultiCharMapping CaseSpecials_${whichMapping}[] = {\n";
foreach my $key (sort { $a <=> $b } keys %$hash) {
my @chars = split(/ /, $hash->{$key});
printf " { 0x%04x, {0x%04x, 0x%04x, 0x%04x} }, // %s\n", $key,
hex "0x0$chars[0]", hex "0x0$chars[1]", hex "0x0$chars[2]",
"$charName{$key}";
}
print "};\n\n";
};
sub addIfSpecial {
my ($hash, $usv, $mapping) = @_;
return unless $mapping =~ / /;
# only do compositions that start with the initial char
foreach (keys %compositions) {
$mapping =~ s/^$_/$compositions{$_}/;
}
$hash->{$usv} = $mapping;
};
sub addSpecialsTo {
my ($hash, $specials) = @_;
foreach my $key (keys %$specials) {
$hash->{$key} = $specials->{$key};
}
};
sub genTest {
my ($whichMapping, $hash) = @_;
open OUT, "> all-$whichMapping.html";
print OUT <<__END__;
<!DOCTYPE html>
<!-- GENERATED FILE, DO NOT EDIT -->
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<style type="text/css">
\@font-face { font-family: foo; src: url($testFont); }
p { font-family: foo; font-size: 12px; text-transform: ${whichMapping}case; }
</style>
</head>
<body>
<p>
__END__
foreach my $key (sort { $a <=> $b } keys %$hash) {
# of widespread font support for the corresponding Mtavruli characters
# at this time (July 2018).
# This condition is to be removed once the major platforms ship with
# fonts that support U+1C90..1CBF.
my $skippedGeorgian = $whichMapping eq "upper" && $key >= 0x10D0 && $key <= 0x10FF;
print OUT "<!-- " if $skippedGeorgian;
printf OUT "&#x%04X;", $key;
print OUT " -->" if $skippedGeorgian;
print OUT " <!-- $charName{$key} -->" if exists $charName{$key};
print OUT "\n";
}
print OUT <<__END__;
</p>
</body>
</html>
__END__
close OUT;
open OUT, "> all-$whichMapping-ref.html";
print OUT <<__END__;
<!DOCTYPE html>
<!-- GENERATED FILE, DO NOT EDIT -->
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<style type="text/css">
\@font-face { font-family: foo; src: url($testFont); }
p { font-family: foo; font-size: 12px; }
</style>
</head>
<body>
<p>
__END__
foreach my $key (sort { $a <=> $b } keys %$hash) {
# of widespread font support for the corresponding Mtavruli characters
# at this time (July 2018).
# This condition is to be removed once the major platforms ship with
# fonts that support U+1C90..1CBF.
my $skippedGeorgian = $whichMapping eq "upper" && $key >= 0x10D0 && $key <= 0x10FF;
print OUT "<!-- " if $skippedGeorgian;
print OUT join('', map { sprintf("&#x%s;", $_) } split(/ /, $hash->{$key}));
print OUT " -->" if $skippedGeorgian;
print OUT " <!-- $charName{$key} -->" if exists $charName{$key};
print OUT "\n";
}
print OUT <<__END__;
</p>
</body>
</html>
__END__
close OUT;
};
sub genTitleTest {
open OUT, "> all-title.html";
print OUT <<__END__;
<!DOCTYPE html>
<!-- GENERATED FILE, DO NOT EDIT -->
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<style type="text/css">
\@font-face { font-family: foo; src: url($testFont); }
p { font-family: foo; text-transform: capitalize; }
</style>
</head>
<body>
<p>
__END__
foreach my $key (sort { $a <=> $b } keys %allTitle) {
printf OUT "&#x%04X;x", $key;
print OUT " <!-- $charName{$key} -->" if exists $charName{$key};
print OUT "\n";
}
print OUT <<__END__;
</p>
</body>
</html>
__END__
close OUT;
open OUT, "> all-title-ref.html";
print OUT <<__END__;
<!DOCTYPE html>
<!-- GENERATED FILE, DO NOT EDIT -->
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<style type="text/css">
\@font-face { font-family: foo; src: url($testFont); }
p { font-family: foo; }
</style>
</head>
<body>
<p>
__END__
foreach my $key (sort { $a <=> $b } keys %allTitle) {
# capitalize is only applied to characters with GC=L* or N*...
if ($gc{$key} =~ /^[LN]/) {
# ...and those that are already uppercase are not transformed
if (exists $allUpper{$key}) {
print OUT join('', map { sprintf("&#x%s;", $_) } split(/ /, $allTitle{$key}));
} else {
printf OUT "&#x%04X;", $key;
}
print OUT "x";
} else {
printf OUT "&#x%04X;X", $key;
}
print OUT " <!-- $charName{$key} -->" if exists $charName{$key};
print OUT "\n";
}
print OUT <<__END__;
</p>
</body>
</html>
__END__
close OUT;
};