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      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())
     90