clang/tools/scan-build/bin/set-xcode-analyzer

   1 #!/usr/bin/env 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 sys
   8 if sys.version_info < (3, 6):
   9     print "set-xcode-analyzer requires Python 3.6 or later"
  10     sys.exit(1)
  11
  12 import os
  13 import subprocess
  14 import re
  15 import tempfile
  16 import shutil
  17 import stat
  18 from AppKit import *
  19
  20 def FindClangSpecs(path):
  21   print "(+) Searching for xcspec file in: ", path
  22   for root, dirs, files in os.walk(path):
  23     for f in files:
  24       if f.endswith(".xcspec") and f.startswith("Clang LLVM"):
  25         yield os.path.join(root, f)
  26
  27 def ModifySpec(path, isBuiltinAnalyzer, pathToChecker):
  28   t = tempfile.NamedTemporaryFile(delete=False)
  29   foundAnalyzer = False
  30   with open(path) as f:
  31     if isBuiltinAnalyzer:
  32       # First search for CLANG_ANALYZER_EXEC.  Newer
  33       # versions of Xcode set EXEC_PATH to be CLANG_ANALYZER_EXEC.
  34       with open(path) as f2:
  35         for line in f2:
  36           if line.find("CLANG_ANALYZER_EXEC") >= 0:
  37             pathToChecker = "$(CLANG_ANALYZER_EXEC)"
  38             break
  39     # Now create a new file.
  40     for line in f:
  41       if not foundAnalyzer:
  42         if line.find("Static Analyzer") >= 0:
  43           foundAnalyzer = True
  44       else:
  45         m = re.search(r'^(\s*ExecPath\s*=\s*")', line)
  46         if m:
  47           line = "".join([m.group(0), pathToChecker, '";\n'])
  48           # Do not modify further ExecPath's later in the xcspec.
  49           foundAnalyzer = False
  50       t.write(line)
  51   t.close()
  52   print "(+) processing:", path
  53   try:
  54     shutil.copy(t.name, path)
  55     os.chmod(path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH)
  56   except IOError, why:
  57     print "    (-) Cannot update file:", why, "\n"
  58   except OSError, why:
  59     print "    (-) Cannot update file:", why, "\n"
  60   os.unlink(t.name)
  61
  62 def main():
  63   from optparse import OptionParser
  64   parser = OptionParser('usage: %prog [options]')
  65   parser.set_description(__doc__)
  66   parser.add_option("--use-checker-build", dest="path",
  67                     help="Use the Clang located at the provided absolute path, e.g. /Users/foo/checker-1")
  68   parser.add_option("--use-xcode-clang", action="store_const",
  69                     const="$(CLANG)", dest="default",
  70                     help="Use the Clang bundled with Xcode")
  71   (options, args) = parser.parse_args()
  72   if options.path is None and options.default is None:
  73     parser.error("You must specify a version of Clang to use for static analysis.  Specify '-h' for details")
  74
  75   # determine if Xcode is running
  76   for x in NSWorkspace.sharedWorkspace().runningApplications():
  77     if x.localizedName().find("Xcode") >= 0:
  78       print "(-) You must quit Xcode first before modifying its configuration files."
  79       sys.exit(1)
  80
  81   isBuiltinAnalyzer = False
  82   if options.path:
  83     # Expand tildes.
  84     path = os.path.expanduser(options.path)
  85     if not path.endswith("clang"):
  86       print "(+) Using Clang bundled with checker build:", path
  87       path = os.path.join(path, "bin", "clang");
  88     else:
  89       print "(+) Using Clang located at:", path
  90   else:
  91     print "(+) Using the Clang bundled with Xcode"
  92     path = options.default
  93     isBuiltinAnalyzer = True
  94
  95   try:
  96     xcode_path = subprocess.check_output(["xcode-select", "-print-path"])
  97   except AttributeError:
  98     # Fall back to the default install location when using Python < 2.7.0
  99     xcode_path = "/Developer"
 100   if (xcode_path.find(".app/") != -1):
 101     # Cut off the 'Developer' dir, as the xcspec lies in another part
 102     # of the Xcode.app subtree.
 103     xcode_path = xcode_path.rsplit('/Developer', 1)[0]
 104
 105   foundSpec = False
 106   for x in FindClangSpecs(xcode_path):
 107     foundSpec = True
 108     ModifySpec(x, isBuiltinAnalyzer, path)
 109
 110   if not foundSpec:
 111       print "(-) No compiler configuration file was found.  Xcode's analyzer has not been updated."
 112
 113 if __name__ == '__main__':
 114   main()