Added utils file for some common stuff we use

opentrafficshaper/utils.pm

+# Utility functions
+# Copyright (C) 2013, AllWorldIT
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+package opentrafficshaper::utils;
+
+use strict;
+use warnings;
+
+
+# Exporter stuff
+require Exporter;
+our (@ISA,@EXPORT,@EXPORT_OK);
+@ISA = qw(Exporter);
+@EXPORT = qw(
+	prettyUndef
+	toHex
+);
+@EXPORT_OK = qw(
+);
+
+
+# Print a undef in a pretty fashion
+sub prettyUndef
+{
+	my $var = shift;
+	if (!defined($var)) {
+		return "-undef-";
+	} else {
+		return $var;
+	}
+}
+
+# Return hex representation of a decimal
+sub toHex
+{
+	my $decimal = shift;
+	return sprintf('%x',$decimal);
+}
+
+1;
+# vim: ts=4