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-rwxr-xr-xdeps/gyp/tools/graphviz.py100
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diff --git a/deps/gyp/tools/graphviz.py b/deps/gyp/tools/graphviz.py
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--- a/deps/gyp/tools/graphviz.py
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-#!/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())