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      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 
      7 import os
      8 import subprocess
      9 import sys
     10 import re
     11 import tempfile
     12 import shutil
     13 import stat
     14 from AppKit import *
     15 
     16 def 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 
     23 def 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 
     47 def 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   xcode_path = subprocess.check_output(["xcode-select", "-print-path"])
     79   if (re.search("Xcode.app", xcode_path)):
     80     # Cut off the 'Developer' dir, as the xcspec lies in another part
     81     # of the Xcode.app subtree.
     82     xcode_path = os.path.dirname(xcode_path)
     83   
     84   for x in FindClangSpecs(xcode_path):
     85     ModifySpec(x, path)
     86 
     87 if __name__ == '__main__':
     88   main()
     89 
     90