#
# BonFIRE Virtual Clusters on Federated Clouds Demonstration Kit
#
# Copyright (c) Fundacion Centro Tecnologico de Supercomputacion de Galicia 2012
# 
# License Apache Software
#
# The research leading to these results has received funding from
# the European Community's Seventh Framework Programme (FP7/2007-2013) 
# under agreement number 257386
#
# This software is provided with ABSOLUTELY NO WARRANTY
# 
def load(file_path):
	hosts = {}
	with open(file_path) as file:
		for line in file:
			line = line.strip()
			if not line or line.startswith('#'):
				continue
			elements = line.split()
			hosts[elements[0]] = elements[1:]
	return hosts

def store(file_path,hosts):
	output = "\n".join([ " ".join(list(host)) for host in hosts ]) + "\n"
	with open(file_path,'w') as file:
		file.write(output)

def append(file_path,ip,hostname):
	with open(file_path,'a') as file:
		file.write("\n%s %s\n" % (ip,hostname))