#!/usr/bin/env perl 
#===============================================================================
#
#         FILE: skript3.pl
#
#        USAGE: ./skript3.pl  
#
#  DESCRIPTION: 
#
#      OPTIONS: ---
# REQUIREMENTS: ---
#         BUGS: ---
#        NOTES: ---
#       AUTHOR: Stefan Suhren (su), suhren.stefan@fh-swf.de
# ORGANIZATION: FH Südwestfalen, Iserlohn
#      VERSION: 1.0
#      CREATED: 20.11.2015 00:14:20
#     REVISION: ---
#===============================================================================

use strict;
use warnings;
use utf8;

# enforce utf-8 mode
binmode (STDIN, ":encoding(UTF-8)");
binmode (STDOUT, ":encoding(UTF-8)");
binmode (STDERR, ":encoding(UTF-8)");
use open ":encoding(UTF-8)";

my %wortliste;

my	$german9_file_name = 'GERMAN9.LST';		# input file name

open  my $german9, '<', $german9_file_name
	or die  "$0 : failed to open  input file '$german9_file_name' : $!\n";

while (my $wort = <$german9>)
{	
	chomp $wort;
	my $key = make_key($wort);
	push @{$wortliste{$key}}, $wort;
}

close  $german9
	or warn "$0 : failed to close input file '$german9_file_name' : $!\n";

print "Verwürfeltes Wort eingeben: ";
my $wort = <>;

chomp $wort;
my $key = make_key($wort);

if(exists $wortliste{$key})
{
	print "Lösung(en) ist/sind: ";
	foreach my $loesung (@{$wortliste{$key}})
	{
		print $loesung . ", ";
	}
}
else
{
	print "Wort konnte leider nicht gefunden werden.";
}

#===  FUNCTION  ================================================================
#         NAME: make_key
#      PURPOSE: Creates a key for the hash of solutions.
#   PARAMETERS: The string to make a key from.
#      RETURNS: The key for the hash of solutions.
#  DESCRIPTION: Creates a key for the hash of solutions.
#       THROWS: no exceptions
#     COMMENTS: none
#     SEE ALSO: n/a
#===============================================================================
sub make_key {
	my	( $zeichenkette )	= @_;

	defined $zeichenkette or die "No zeichenkette supplied.";

	chomp $zeichenkette;

	my @feld = split //, uc $zeichenkette;

	@feld = sort @feld;

	return join ("", @feld);
} ## --- end sub make_key