1#!/usr/bin/python
2
3# [PR 11661] Note that we hardwire to /usr/bin/python because we
4# want to the use the system version of Python on Mac OS X.
5# This one has the scripting bridge enabled.
6
7import os
8import subprocess
9import sys
10import re
11import tempfile
12import shutil
13import stat
14from AppKit import *
15
16def FindClangSpecs(path):
17  print "(+) Searching for xcspec file in: ", path
18  for root, dirs, files in os.walk(path):
19    for f in files:
20      if f.endswith(".xcspec") and f.startswith("Clang LLVM"):
21        yield os.path.join(root, f)
22
23def ModifySpec(path, pathToChecker):
24  t = tempfile.NamedTemporaryFile(delete=False)
25  foundAnalyzer = False
26  with open(path) as f:
27    for line in f:
28      if not foundAnalyzer:
29        if line.find("Static Analyzer") >= 0:
30          foundAnalyzer = True
31      else:
32        m = re.search('^(\s*ExecPath\s*=\s*")', line)
33        if m:
34          line = "".join([m.group(0), pathToChecker, '";\n'])
35      t.write(line)
36  t.close()
37  print "(+) processing:", path
38  try:
39    shutil.copy(t.name, path)
40    os.chmod(path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH)
41  except IOError, why:
42    print "    (-) Cannot update file:", why, "\n"
43  except OSError, why:
44    print "    (-) Cannot update file:", why, "\n"
45  os.unlink(t.name)
46
47def main():
48  from optparse import OptionParser
49  parser = OptionParser('usage: %prog [options]')
50  parser.set_description(__doc__)
51  parser.add_option("--use-checker-build", dest="path",
52                    help="Use the Clang located at the provided absolute path, e.g. /Users/foo/checker-1")
53  parser.add_option("--use-xcode-clang", action="store_const", 
54                    const="$(CLANG)", dest="default",
55                    help="Use the Clang bundled with Xcode")
56  (options, args) = parser.parse_args()
57  if options.path is None and options.default is None:
58    parser.error("You must specify a version of Clang to use for static analysis.  Specify '-h' for details")
59
60  # determine if Xcode is running
61  for x in NSWorkspace.sharedWorkspace().runningApplications():
62    if x.localizedName().find("Xcode") >= 0:
63      print "(-) You must quit Xcode first before modifying its configuration files."
64      return
65
66  if options.path:
67    # Expand tildes.
68    path = os.path.expanduser(options.path)
69    if not path.endswith("clang"):
70      print "(+) Using Clang bundled with checker build:", path
71      path = os.path.join(path, "bin", "clang");
72    else:
73      print "(+) Using Clang located at:", path
74  else:
75    print "(+) Using the Clang bundled with Xcode"
76    path = options.default
77  
78  try:
79    xcode_path = subprocess.check_output(["xcode-select", "-print-path"])
80  except AttributeError:
81    # Fall back to the default install location when using Python < 2.7.0
82    xcode_path = "/Developer"
83  if (re.search("Xcode.app", xcode_path)):
84    # Cut off the 'Developer' dir, as the xcspec lies in another part
85    # of the Xcode.app subtree.
86    xcode_path = os.path.dirname(xcode_path)
87  
88  for x in FindClangSpecs(xcode_path):
89    ModifySpec(x, path)
90
91if __name__ == '__main__':
92  main()
93
94