tools/win/split_link/graph_dependencies.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 import os
   6 import shutil
   7 import subprocess
   8 import sys
   9
  10
  11 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
  12
  13
  14 def main():
  15   if len(sys.argv) != 2:
  16     print 'usage: %s <output.html>' % sys.argv[0]
  17     return 1
  18   env = os.environ.copy()
  19   env['GYP_GENERATORS'] = 'dump_dependency_json'
  20   print 'Dumping dependencies...'
  21   popen = subprocess.Popen(
  22       ['python', 'build/gyp_chromium'],
  23       shell=True, env=env)
  24   popen.communicate()
  25   if popen.returncode != 0:
  26     return popen.returncode
  27   print 'Finding problems...'
  28   popen = subprocess.Popen(
  29       ['python', 'tools/gyp-explain.py', '--dot',
  30        'chrome.gyp:browser#', 'core.gyp:webcore#'],
  31       stdout=subprocess.PIPE,
  32       shell=True)
  33   out, _ = popen.communicate()
  34   if popen.returncode != 0:
  35     return popen.returncode
  36
  37   # Break into pairs to uniq to make graph less of a mess.
  38   print 'Simplifying...'
  39   deduplicated = set()
  40   lines = out.splitlines()[2:-1]
  41   for line in lines:
  42     line = line.strip('\r\n ;')
  43     pairs = line.split(' -> ')
  44     for i in range(len(pairs) - 1):
  45       deduplicated.add('%s -> %s;' % (pairs[i], pairs[i + 1]))
  46   graph = 'strict digraph {\n' + '\n'.join(sorted(deduplicated)) + '\n}'
  47
  48   print 'Writing report to %s...' % sys.argv[1]
  49   path_count = len(out.splitlines())
  50   with open(os.path.join(BASE_DIR, 'viz.js', 'viz.js')) as f:
  51     viz_js = f.read()
  52   with open(sys.argv[1], 'w') as f:
  53     f.write(PREFIX % path_count)
  54     f.write(graph)
  55     f.write(SUFFIX % viz_js)
  56   print 'Done.'
  57
  58
  59 PREFIX = r'''<!DOCTYPE html>
  60 <html>
  61   <head>
  62     <meta charset="utf-8">
  63     <title>Undesirable Dependencies</title>
  64   </head>
  65   <body>
  66     <h1>Undesirable Dependencies</h1>
  67 <h2>browser &rarr; webcore</h2>
  68 <h3>%d paths</h3>
  69     <script type="text/vnd.graphviz" id="graph">
  70 '''
  71
  72
  73 SUFFIX = r'''
  74     </script>
  75     <script>%s</script>
  76     <div id="output">Rendering...</div>
  77     <script>
  78       setTimeout(function() {
  79           document.getElementById("output").innerHTML =
  80               Viz(document.getElementById("graph").innerHTML, "svg");
  81         }, 1);
  82     </script>
  83   </body>
  84 </html>
  85 '''
  86
  87
  88 if __name__ == '__main__':
  89   sys.exit(main())