blob: 1df5b8c345905b5062012e5833ddeefa69fae280 [file] [log] [blame]
Patrick Williamsc0f7c042017-02-23 20:41:17 -06001#!/usr/bin/env python3
Patrick Williamsc124f4f2015-09-15 14:41:29 -05002
3# Simple graph query utility
4# useful for getting answers from .dot files produced by bitbake -g
5#
6# Written by: Paul Eggleton <paul.eggleton@linux.intel.com>
7#
8# Copyright 2013 Intel Corporation
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License version 2 as
12# published by the Free Software Foundation.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License along
20# with this program; if not, write to the Free Software Foundation, Inc.,
21# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22#
23
24import sys
25
26def get_path_networkx(dotfile, fromnode, tonode):
27 try:
28 import networkx
29 except ImportError:
30 print('ERROR: Please install the networkx python module')
31 sys.exit(1)
32
Patrick Williamsc0f7c042017-02-23 20:41:17 -060033 graph = networkx.DiGraph(networkx.nx_pydot.read_dot(dotfile))
Patrick Williamsc124f4f2015-09-15 14:41:29 -050034 def node_missing(node):
35 import difflib
36 close_matches = difflib.get_close_matches(node, graph.nodes(), cutoff=0.7)
37 if close_matches:
38 print('ERROR: no node "%s" in graph. Close matches:\n %s' % (node, '\n '.join(close_matches)))
39 sys.exit(1)
40
41 if not fromnode in graph:
42 node_missing(fromnode)
43 if not tonode in graph:
44 node_missing(tonode)
45 return networkx.all_simple_paths(graph, source=fromnode, target=tonode)
46
47
48def find_paths(args, usage):
49 if len(args) < 3:
50 usage()
51 sys.exit(1)
52
53 fromnode = args[1]
54 tonode = args[2]
Patrick Williamsc0f7c042017-02-23 20:41:17 -060055
56 path = None
57 for path in get_path_networkx(args[0], fromnode, tonode):
58 print(" -> ".join(map(str, path)))
59 if not path:
Patrick Williamsc124f4f2015-09-15 14:41:29 -050060 print("ERROR: no path from %s to %s in graph" % (fromnode, tonode))
61 sys.exit(1)
62
63def main():
64 import optparse
65 parser = optparse.OptionParser(
66 usage = '''%prog [options] <command> <arguments>
67
68Available commands:
69 find-paths <dotfile> <from> <to>
70 Find all of the paths between two nodes in a dot graph''')
71
72 #parser.add_option("-d", "--debug",
73 # help = "Report all SRCREV values, not just ones where AUTOREV has been used",
74 # action="store_true", dest="debug", default=False)
75
76 options, args = parser.parse_args(sys.argv)
77 args = args[1:]
78
79 if len(args) < 1:
80 parser.print_help()
81 sys.exit(1)
82
83 if args[0] == "find-paths":
84 find_paths(args[1:], parser.print_help)
85 else:
86 parser.print_help()
87 sys.exit(1)
88
89
90if __name__ == "__main__":
91 main()