#!/usr/bin/env python
"""
Draw a graph of the net architecture.
"""
from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter
from google.protobuf import text_format

import caffe
import caffe.draw
from caffe.proto import caffe_pb2


def parse_args():
 """Parse input arguments
 """

 parser = ArgumentParser(description=__doc__,
 formatter_class=ArgumentDefaultsHelpFormatter)

 parser.add_argument('input_net_proto_file',
 help='Input network prototxt file')
 parser.add_argument('output_image_file',
 help='Output image file')
 parser.add_argument('--rankdir',
 help=('One of TB (top-bottom, i.e., vertical), '
 'RL (right-left, i.e., horizontal), or another '
 'valid dot option; see '
 'http://www.graphviz.org/doc/info/'
 'attrs.html#k:rankdir'),
 default='LR')
 parser.add_argument('--phase',
 help=('Which network phase to draw: can be TRAIN, '
 'TEST, or ALL. If ALL, then all layers are drawn '
 'regardless of phase.'),
 default="ALL")

 args = parser.parse_args()
 return args


def main():
 args = parse_args()
 net = caffe_pb2.NetParameter()
 text_format.Merge(open(args.input_net_proto_file).read(), net)
 print('Drawing net to %s' % args.output_image_file)
 phase=None;
 if args.phase == "TRAIN":
 phase = caffe.TRAIN
 elif args.phase == "TEST":
 phase = caffe.TEST
 elif args.phase != "ALL":
 raise ValueError("Unknown phase: " + args.phase)
 caffe.draw.draw_net_to_file(net, args.output_image_file, args.rankdir,
 phase)


if __name__ == '__main__':
 main()