parser.add_argument('-c', '--comparator', choices=comparators.keys(),
help='comparison function to define URL uniqueness (DEFAULT=alpha)')
args = parser.parse_args()
# read URLs from file
urls = None
try:
urls = open(args.input).readlines()
urls = [x.strip() for x in urls]
except IOError:
print "Error: File \"%s\" not found." % args.input
sys.exit()
# default comparator is alpha
cmp = comparators['alpha']
if args.comparator is not None:
cmp = comparators[args.comparator]
# set of urls, normalized
normUrls = normalizer.normalize_list(urls)
# print results
for i, url in enumerate(urls):
normUrl = normUrls[i]
print 'Source: ', url
print 'Valid: ', validator.is_valid(url)
print 'Canonicalized: ', normUrl
print 'Source unique: ', is_unique(url, urls, cmp)
print 'Canonicalized unique: ', is_unique(normUrl, normUrls, cmp)
print
try:
outfile = open(args.output, 'w')
except IOError:
print "Error: Unable to open output file \"%s\"." % args.output
sys.exit()
try:
urls = open(args.input).readlines()
except IOError:
print "Error: File \"%s\" not found." % args.input
sys.exit()
sel = 3 # default selection is quicksort
if args.sort is not None: # try getting sort selection from command-line args
sel = args.sort
# remove leading/trailing whitespace from urls
urls = [x.strip() for x in urls]
# normalize and validate urls, if specified
if args.filter is not None:
validUrls = validator.valid_list(urls)
if args.filter == 'valid':
urls = normalizer.normalize_list(validUrls)
elif args.filter == 'invalid':
urls = filter(lambda x: x not in validUrls, urls)
sorter = algos[sel](urls)
sortedList = sorter.sort()
outfile.write("\n".join(sortedList))