--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/euser/unicode/perl/UnicodeAddFolded.pl	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,108 @@
+# Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
+# All rights reserved.
+# This component and the accompanying materials are made available
+# under the terms of the License "Eclipse Public License v1.0"
+# which accompanies this distribution, and is available
+# at the URL "http://www.eclipse.org/legal/epl-v10.html".
+#
+# Initial Contributors:
+# Nokia Corporation - initial contribution.
+#
+# Contributors:
+#
+# Description:
+# Adds folding information to Unicode data
+# Added as the third field after the 'Symbian:' marker in the following format:
+# Symbian:<grapheme-role>;<excluded-from-composition>;<folded-form>
+# where <folded-form> is null or a sequence of hex unicode values
+# separated by spaces representing the folded form of the character.
+# Usage:
+# perl -w UnicodeAddFolded.pl CaseFolding.txt < <output-of-UnicodeCompositionEx>
+# 
+#
+
+use strict;
+
+if (scalar(@ARGV) != 1)
+	{
+	print (STDERR "Usage:\nperl -w UnicodeAddFolded.pl CaseFolding.txt < <output-of-UnicodeCompositionEx>\n");
+	exit 1;
+	}
+
+open(FOLDING, $ARGV[0]) or die("Could not open file $ARGV[0]\n");
+
+my %Fold = ();
+my %MappingLine = ();
+my $lineNo = 0;
+while (<FOLDING>)
+	{
+	$lineNo++;
+	my ($line, $comment) = split(/#/, $_, 2);
+	if ($line =~ /^[ \t]*(1?[0-9a-fA-F]{4,5});[ \t]*([LEICSFT]);[ \t]*([0-9a-fA-F][0-9a-fA-F \t]*);[ \t]*$/)
+		{
+		my $code = hex($1);
+		my $type = $2;
+		my $folded = $3;
+		# We'll deal with Turkic mappings with our own hack.
+		# F = Full mappings (fold is longer than one character)
+		# T = I = Turkic mapping
+		if ($type !~ /[FTI]/ && $folded !~ /[ \t]/)
+			{
+			die ("$code has two mappings: lines $MappingLine{$code} and $lineNo.")
+				if (exists $Fold{$code});
+			$Fold{$code} = $folded;
+			$MappingLine{$code} = $lineNo;
+			}
+		}
+	elsif ($line !~ /^[ \t]*$/)
+		{
+		die ("Did not understand line $lineNo of $ARGV[0]");
+		}
+	}
+
+close FOLDING;
+
+# Turkic hack:
+# Map dotted capital I and dotless small I to lower case i.
+# This makes all the 'i's fold the same, which isn't very nice for Turkic
+# languages, but it at least gives us behaviour consistent across locales
+# which does at least map dotted I, and i to the same value, as well
+# as mapping I and dotless i to the same value, and mapping I and i
+# to the same value.
+$Fold{0x49} = '0069';
+$Fold{0x130} = '0069';
+$Fold{0x131} = '0069';
+
+$lineNo = 0;
+while (my $line = <STDIN>)
+	{
+	chomp $line;
+	$lineNo++;
+	# Split into fields: make sure trailing null strings are not
+	# deleted by adding a dummy final field
+	my @attribute = split(/;/, $line.';dummy');
+	# Delete the dummy field
+	pop @attribute;
+	die ("Line $lineNo is missing 'Symbian:' entries. Has UnicodeCompositionEx been run?")
+		if (scalar(@attribute) == 15);
+	if (scalar(@attribute) == 16)
+		{
+		die ("Line $lineNo is missing 'Symbian:' entries. Has UnicodeCompositionEx been run?")
+			if ($attribute[15] !~ /^[ \t]*symbian:/i);
+		my $code = $attribute[0];
+		die("First attribute '$code' not a valid Unicode codepoint at line $lineNo")
+			unless $code =~ /^1?[0-9a-fA-F]{4,5}$/;
+		$code = hex($code);
+		$attribute[16] = exists $Fold{$code}? $Fold{$code} : '';
+		print join(';', @attribute);
+		}
+	elsif ($line !~ /^[ \t]*$/)
+		{
+		die 'Do not understand line '.$lineNo;
+		}
+	else
+		{
+		print $line;
+		}
+	print "\n";
+	}