#### translit - transliterates Greek text to English
####

sub translit {

	my $line = shift;									# this gets the argument (string)

	if ( $line =~ /[Α-Ω]|[α-ω]/ ) {								# is there any Greek here?

		$line =~ tr/’£ΉΊΌΎΏ/ΑΕΗΙΟΥΩ/;							# we don't want accented upper case letters

	# This hash (%replace) contains special letter combinations that are substituted first in the 'while' loop below
	# The _ characters are place holders to deal with the special case OIKONOMOU -> ECONOMOU, etc.

		my %replace = qw/ αι e αί e Αι E Αί E ΑΙ E αυ av αύ av Αυ Av Αύ Av ΑΥ AV
				  γγ ng Γγ G ΓΓ G γκ ng Γκ G ΓΚ G
				  ει i εί i Ει I Εί I ΕΙ I ευ ev εύ ev Ευ Ev Εύ Ev ΕΥ EV
				  θ th Θ ΤH
				  μπ mb Μπ B ΜΠ MB
				  ντ nt Ντ D ΝΤ NT
				  οι i οί i Οι I_ Οί I_ ΟΙ I_ ου ou ού ou Ου Ou Ού Ou ΟΥ OU
				  χ ch Χ CH
				  ψ ps Ψ PS /;

		while ( my( $key, $value ) = each %replace ) {					# deal with special letter combinations first
			$line =~ s/$key/$value/g;						# Replace each $key with corresponding $value from hash
		}
												# now do direct letter substitution

		$line =~ tr/ΑΒΓΔΕΖΗΙΚΛΜΝΞΟΠΡΣΤΥΦΩΪΫαβγδεζηικλμνξοπρσςτυφωάέήίόύώϊϋΐΰ/AVGDEZIIKLMNXOPRSTYFOIIavgdeziiklmnxoprsstyfoaeiioioiyiy/;

		my %replace2 = qw/ I_K EC I_k Ec MB B mb b NT D nt d/;

		while ( my( $key, $value ) = each %replace2 ) {					# various small fixes for letter
			$line =~ s/\b$key/$value/g;						# combinations at the START of a word
		}

		$line =~ s/\b([A-Z])([A-Z])(?=[a-z\W])/$1\l$2/go;				# adjust case of second letter if followed by lower case
																														# letter or non-word character

		$line =~ tr/_//;		 						# remove any stray _ characters

	}

	return $line;

}

1;