101 lines
2.8 KiB
Python
Executable File
101 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python
|
|
|
|
# Copyright (c) 2011 Google Inc. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
"""Using the JSON dumped by the dump-dependency-json generator,
|
|
generate input suitable for graphviz to render a dependency graph of
|
|
targets."""
|
|
|
|
import collections
|
|
import json
|
|
import sys
|
|
|
|
|
|
def ParseTarget(target):
|
|
target, _, suffix = target.partition('#')
|
|
filename, _, target = target.partition(':')
|
|
return filename, target, suffix
|
|
|
|
|
|
def LoadEdges(filename, targets):
|
|
"""Load the edges map from the dump file, and filter it to only
|
|
show targets in |targets| and their depedendents."""
|
|
|
|
file = open('dump.json')
|
|
edges = json.load(file)
|
|
file.close()
|
|
|
|
# Copy out only the edges we're interested in from the full edge list.
|
|
target_edges = {}
|
|
to_visit = targets[:]
|
|
while to_visit:
|
|
src = to_visit.pop()
|
|
if src in target_edges:
|
|
continue
|
|
target_edges[src] = edges[src]
|
|
to_visit.extend(edges[src])
|
|
|
|
return target_edges
|
|
|
|
|
|
def WriteGraph(edges):
|
|
"""Print a graphviz graph to stdout.
|
|
|edges| is a map of target to a list of other targets it depends on."""
|
|
|
|
# Bucket targets by file.
|
|
files = collections.defaultdict(list)
|
|
for src, dst in edges.items():
|
|
build_file, target_name, toolset = ParseTarget(src)
|
|
files[build_file].append(src)
|
|
|
|
print 'digraph D {'
|
|
print ' fontsize=8' # Used by subgraphs.
|
|
print ' node [fontsize=8]'
|
|
|
|
# Output nodes by file. We must first write out each node within
|
|
# its file grouping before writing out any edges that may refer
|
|
# to those nodes.
|
|
for filename, targets in files.items():
|
|
if len(targets) == 1:
|
|
# If there's only one node for this file, simplify
|
|
# the display by making it a box without an internal node.
|
|
target = targets[0]
|
|
build_file, target_name, toolset = ParseTarget(target)
|
|
print ' "%s" [shape=box, label="%s\\n%s"]' % (target, filename,
|
|
target_name)
|
|
else:
|
|
# Group multiple nodes together in a subgraph.
|
|
print ' subgraph "cluster_%s" {' % filename
|
|
print ' label = "%s"' % filename
|
|
for target in targets:
|
|
build_file, target_name, toolset = ParseTarget(target)
|
|
print ' "%s" [label="%s"]' % (target, target_name)
|
|
print ' }'
|
|
|
|
# Now that we've placed all the nodes within subgraphs, output all
|
|
# the edges between nodes.
|
|
for src, dsts in edges.items():
|
|
for dst in dsts:
|
|
print ' "%s" -> "%s"' % (src, dst)
|
|
|
|
print '}'
|
|
|
|
|
|
def main():
|
|
if len(sys.argv) < 2:
|
|
print >>sys.stderr, __doc__
|
|
print >>sys.stderr
|
|
print >>sys.stderr, 'usage: %s target1 target2...' % (sys.argv[0])
|
|
return 1
|
|
|
|
edges = LoadEdges('dump.json', sys.argv[1:])
|
|
|
|
WriteGraph(edges)
|
|
return 0
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|