sourcefilename = 'edmonton-roads-digraph.txt'
argv = sys.argv[1:]
if len(argv) == 0:
#for no args, nothing to do, use default file
pass
elif len(argv) == 1:
#for one arg, that arg is the file
sourcefilename = argv[0].strip(' ')
else:
#otherwise, there was a bad usage, bail out
print("Invalid usage.\nExpected: server.py [graphdatafile]")
exit(-1)
(graph, metadata) = (None, None)
#try:
(graph, metadata) = read_graph(open(sourcefilename))
#except:
# print("Could not open source graph file `%s` for reading" % sourcefilename)
# exit(-1)
def dist_between(node_a_id, node_b_id):
"""
Calculate the distance between two vertex IDs
"""
#get the nodes
node_a = metadata[node_a_id]
node_b = metadata[node_b_id]
#calculate the distance and eturn it
"""
python3 readgraph.py [ digraph-file ]
Takes a csv (comma separated values) text file containing the vertices
and edges of a street digraph and converts it into a digraph instance.
If the optional argument digraph-file is supplied, reads that, otherwise
takes input from stdin
"""
import sys
from readgraph import read_graph
# throw away executable name before processing command line arguments
argv = sys.argv[1:]
# if filename is supplied, use that, otherwise use stdin
if argv:
digraph_file_name = argv.pop(0)
digraph_file = open(digraph_file_name, 'r')
else:
digraph_file = sys.stdin
(graph, md) = read_graph(digraph_file)
if True:
print("Done\n:", md)
