# Copyright 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import shutil
import subprocess
import sys
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
def main():
if len(sys.argv) != 2:
print 'usage: %s <output.html>' % sys.argv[0]
return 1
env = os.environ.copy()
env['GYP_GENERATORS'] = 'dump_dependency_json'
print 'Dumping dependencies...'
popen = subprocess.Popen(
['python', 'build/gyp_chromium'],
shell=True, env=env)
popen.communicate()
if popen.returncode != 0:
return popen.returncode
print 'Finding problems...'
popen = subprocess.Popen(
['python', 'tools/gyp-explain.py', '--dot',
'chrome.gyp:browser#', 'core.gyp:webcore#'],
stdout=subprocess.PIPE,
shell=True)
out, _ = popen.communicate()
if popen.returncode != 0:
return popen.returncode
# Break into pairs to uniq to make graph less of a mess.
print 'Simplifying...'
deduplicated = set()
lines = out.splitlines()[2:-1]
for line in lines:
line = line.strip('\r\n ;')
pairs = line.split(' -> ')
for i in range(len(pairs) - 1):
deduplicated.add('%s -> %s;' % (pairs[i], pairs[i + 1]))
graph = 'strict digraph {\n' + '\n'.join(sorted(deduplicated)) + '\n}'
print 'Writing report to %s...' % sys.argv[1]
path_count = len(out.splitlines())
with open(os.path.join(BASE_DIR, 'viz.js', 'viz.js')) as f:
viz_js = f.read()
with open(sys.argv[1], 'w') as f:
f.write(PREFIX % path_count)
f.write(graph)
f.write(SUFFIX % viz_js)
print 'Done.'
PREFIX = r'''<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Undesirable Dependencies</title>
</head>
<body>
<h1>Undesirable Dependencies</h1>
<h2>browser → webcore</h2>
<h3>%d paths</h3>
<script type="text/vnd.graphviz" id="graph">
'''
SUFFIX = r'''
</script>
<script>%s</script>
<div id="output">Rendering...</div>
<script>
setTimeout(function() {
document.getElementById("output").innerHTML =
Viz(document.getElementById("graph").innerHTML, "svg");
}, 1);
</script>
</body>
</html>
'''
if __name__ == '__main__':
sys.exit(main())