/usr/local/CPAN/Regexp-Ethiopic/Regexp/Ethiopic/Tigrigna.pm

package Regexp::Ethiopic::Tigrigna
EOF
package Regexp::Ethiopic::Tigrigna;
use base qw(Regexp::Ethiopic);  #  this might be more useful later,
                                #  we at least get "Exporter" for free.

use utf8;
BEGIN
{
use strict;
use vars qw($VERSION @EXPORT_OK %TigrignaEquivalence %TigrignaClassEquivalence);


	$VERSION = "0.05";
	
	@EXPORT_OK = qw(%TigrignaEquivalence %TigrignaClassEquivalence);


#
#  Tigrigna Rules Orthography Equivalence
#
%TigrignaEquivalence =(
	áˆ€	=> "áˆ€áˆƒáŠ€áŠƒ",
	áˆ	=> "áˆáŠ",
	áˆ‚	=> "áˆ‚áŠ‚",
	áˆ„	=> "áˆ„áŠ„",
	áˆ…	=> "áˆ…áŠ…",
	áˆ†	=> "áˆ†áŠ†áŠˆ",

	áˆ	=> "áˆáˆ“",

	áˆ°	=> "áˆ°áˆ ",
	áˆ±	=> "áˆ±áˆ¡",
	áˆ²	=> "áˆ²áˆ¢",
	áˆ³	=> "áˆ³áˆ£",
	áˆ´	=> "áˆ´áˆ¤",
	áˆµ	=> "áˆµáˆ¥",
	áˆ¶	=> "áˆ¶áˆ¦",
	áˆ·	=> "áˆ·áˆ§",

	á‰	=> "á‰á‰",
	á‰†	=> "á‰†á‰ˆ",
	á‰‘	=> "á‰‘á‰",
	á‰–	=> "á‰–á‰˜",

	áŠ 	=> "áŠ áŠ£",
	á‹	=> "á‹“á‹",

	áŠ®	=> "áŠ®áŠ°",
	áŠ¾	=> "áŠ¾á‹€",
	áŒŽ	=> "áŒŽáŒ",

	áŒ¸	=> "áŒ¸á€",
	áŒ¹	=> "áŒ¹á",
	áŒº	=> "áŒºá‚",
	áŒ»	=> "áŒ»áƒ",
	áŒ¼	=> "áŒ¼á„",
	áŒ½	=> "áŒ½á…",
	áŒ¾	=> "áŒ¾á†",
);

foreach (ord('áˆ€')..ord('áˆ†')) {
	my $key = chr($_);	
	# print "KEY $key / $TigrignaEquivalence{$key}\n";
	next if ( $key eq 'áˆƒ' );
	my @values = split (//, $TigrignaEquivalence{$key});
	foreach (@values) {
		# print "  VALUE: $_\n";
		$TigrignaEquivalence{$_}
			= $TigrignaEquivalence{$key}
			;
	}
}
$TigrignaEquivalence{'áˆ“'}
	= $TigrignaEquivalence{'áˆ'}
	;
foreach (ord('áˆ°')..ord('áˆ·')) {
	my $key = chr($_);	
	$TigrignaEquivalence{$key} =~ /(\w)$/;
	$TigrignaEquivalence{$1}
		= $TigrignaEquivalence{$key}
		;
}
$TigrignaEquivalence{'á‰'}
	= $TigrignaEquivalence{'á‰'}
	;
$TigrignaEquivalence{'á‰ˆ'}
	= $TigrignaEquivalence{'á‰†'}
	;
$TigrignaEquivalence{'á‰'}
	= $TigrignaEquivalence{'á‰‘'}
	;
$TigrignaEquivalence{'á‰˜'}
	= $TigrignaEquivalence{'á‰–'}
	;
$TigrignaEquivalence{'áŠ£'}
	= $TigrignaEquivalence{'áŠ '}
	;
$TigrignaEquivalence{'áŠ°'}
	= $TigrignaEquivalence{'áŠ®'}
	;
$TigrignaEquivalence{'á‹€'}
	= $TigrignaEquivalence{'áŠ¾'}
	;
$TigrignaEquivalence{'á‹“'}
	= $TigrignaEquivalence{'á‹'}
	;
$TigrignaEquivalence{'áŒ'}
	= $TigrignaEquivalence{'áŒŽ'}
	;
foreach (ord('áŒ¸')..ord('áŒ¾')) {
	my $key = chr($_);	
	$TigrignaEquivalence{$key} =~ /(\w)$/;
	$TigrignaEquivalence{$1}
		= $TigrignaEquivalence{$key}
		;
}


#
#  Family Eqivalence
#
%TigrignaClassEquivalence =(
	áˆ€	=> "áˆ€-áˆ†áŠ€-áŠ†áŠˆ-áŠ",
	áˆ°	=> "áˆ°-áˆ·áˆ -áˆ§",
	áŒ¸	=> "áŒ¸-áŒ¿á€-á†"
);
$TigrignaClassEquivalence{'áˆ '}
	= $TigrignaClassEquivalence{'áˆ°'}
	;
$TigrignaClassEquivalence{'á€'}
	= $TigrignaClassEquivalence{'áŒ¸'}
	;
}


sub import
{

	my @args = ( shift ); # package
	foreach (@_) {
		if ( /overload/o ) {
			use overload;
			overload::constant 'qr' => \&getRe;
		}
		elsif ( /EthiopicClasses|(sub|[gs]et)Form|:forms|:utils/ ) {
			Regexp::Ethiopic->export_to_level (1, "Regexp::Ethiopic", $_);
		}
		else {
			push (@args, $_);
		}
	}
	if ($#args) {
		Regexp::Ethiopic::Tigrigna->export_to_level (1, @args);
	}

}


#
# move into Regexp::Ethiopic later...
#
sub getFamilyEquivalent
{
my ($chars) = @_;


	return $chars if ( length($chars) == 1 );

	$chars =~ s/(\w)(?=\w)/$1,/og;
	my @Chars = split ( /,/, $chars );
	my $return;
	foreach (@Chars) {
		$char = $_;
		foreach	( keys %TigrignaClassEquivalence ) {
			$return .= $_ if ( $TigrignaClassEquivalence{$char} eq $TigrignaClassEquivalence{$_} );
		}
	}

	$return;
}


sub getRe
{
$_ = ($#_) ? $_[1] : $_[0];


	s/\[=(\p{Ethiopic})=\]/($TigrignaEquivalence{$1}) ? "[$TigrignaEquivalence{$1}]" : $1/eog;
	s/\[=#(\p{Ethiopic})#=\]/($TigrignaClassEquivalence{$1}) ? "[$TigrignaClassEquivalence{$1}]" : $1/eog;
	s/\[=#([\p{Ethiopic}]+)#=\]/Regexp::Ethiopic::setRange(getFamilyEquivalent($1),"all")/eog;

	Regexp::Ethiopic::getRe ( $_ );
}



#########################################################
# Do not change this, Do not put anything below this.
# File must return "true" value at termination
1;
##########################################################


__END__


=head1 NAME

Regexp::Ethiopic::Tigrigna - Regular Expressions Support for Tigrigna Language.

=head1 SYNOPSIS

 #
 #  Overloading Perl REs:
 #
 use utf8;
 use Regexp::Ethiopic::Tigrigna 'overload';

 :


 if ( /([=áŠ =])áˆˆáˆ[=áŒ¸=][=áˆƒ=]á‹/ ) {
   #
   # do something
   #
   :
 }

 :
 :

 #
 #  Without overloading:
 #
 use utf8;
 require Regexp::Ethiopic::Tigrigna;

 my $string = "([=áŠ =])áˆˆáˆ[=áŒ¸=][=áˆƒ=]á‹/";
 my $re = Regexp::Ethiopic::Tigrigna::getRe ( $re );

 s/abc($re)xyz/"abc".fixForm($1,6)."xyz"/eg;

=head1 DESCRIPTION

The Regexp::Ethiopic::Tigrigna module provides POSIX style character class
definitions for working with the localized use of Ethiopic syllabary in
the Tigrigna (ti) language.  The character classes provided by the
Regexp::Ethiopic::Tigrigna package correspond to properties of the script
under Tigrigna orthography rules.

The Regexp::Ethiopic::Tigrigna uses Regexp::Ethiopic so generally you
would not need to import both.  Regexp::Ethiopic::Tigrigna conditionally
exports the hashes %TigrignaEquivalence and %TigrignaClassEquivalence
should you wish to use them.  Regexp::Ethiopic::Tigrigna can also
export %EthiopiClass of Regexp::Ethiopic:

use Regexp::Ethiopic::Tigrigna qw(%EthiopicClasses %TigrignaEquivalence %TigrignaClassEquivalence);

The Regexp::Ethiopic::Tigrigna package is NOT derived from the Regexp class
and may not be instantiated into an object.  See the files in the
doc/ and examples/ directories that are included with this package.

=head1 REQUIRES

Works perfectly with Perl 5.8.0, may work with Perl 5.6.x but has
not yet been tested.

=head1 BUGS

None presently known.

=head1 AUTHOR

Daniel Yacob,  L<dyacob@cpan.org|mailto:dyacob@cpan.org>

=cut