import string

def execute(macro, args):
	versions = args.split(',')
	if len(versions) == 0:
		return

	try:
		versions = map(lambda v: string.atoi(v), versions)
	except:
		# Version number was not a real number, maybe add some red signs.
		return ""
	versions.sort()

	results = []
	results.append(macro.formatter.table(1))
	results.append(macro.formatter.table_row(1))
	results.append(macro.formatter.table_cell(1))
	results.append(macro.formatter.strong(1))
	results.append(macro.formatter.text('CentOS version:'))
	results.append(macro.formatter.strong(0))
	results.append(macro.formatter.table_cell(0))

	for version in versions:
		results.append(macro.formatter.table_cell(1))
		results.append(macro.formatter.text(version))
		results.append(macro.formatter.table_cell(0))

	results.append(macro.formatter.table_row(0))
	results.append(macro.formatter.table(0))
	return ''.join(results)