Use python fallback for unzipping in extracting build on mac if file is greater than 4GB

tools/bisect-perf-regression.py

 #!/usr/bin/env python
 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Performance Test Bisect Tool
 
 This script bisects a series of changelists using binary search. It starts at
 a bad revision where a performance metric has regressed, and asks for a last
 known-good revision. It will then binary search across this revision range by
@@ skipping 504 matching lines @@
 
 # This is copied from Chromium's project build/scripts/common/chromium_utils.py.
 def ExtractZip(filename, output_dir, verbose=True):
   """ Extract the zip archive in the output directory."""
   MaybeMakeDirectory(output_dir)
 
   # On Linux and Mac, we use the unzip command as it will
   # handle links and file bits (executable), which is much
   # easier then trying to do that with ZipInfo options.
   #
+  # The Mac Version of unzip unfortunately does not support Zip64, whereas
+  # the python module does, so we have to fallback to the python zip module
+  # on Mac if the filesize is greater than 4GB.
+  #
   # On Windows, try to use 7z if it is installed, otherwise fall back to python
   # zip module and pray we don't have files larger than 512MB to unzip.
   unzip_cmd = None
-  if IsMac() or IsLinux():
+  if ((IsMac() and os.path.getsize(filename) < 4 * 1024 * 1024 * 1024)
+      or IsLinux()):
     unzip_cmd = ['unzip', '-o']
   elif IsWindows() and os.path.exists('C:\\Program Files\\7-Zip\\7z.exe'):
     unzip_cmd = ['C:\\Program Files\\7-Zip\\7z.exe', 'x', '-y']
 
   if unzip_cmd:
     # Make sure path is absolute before changing directories.
     filepath = os.path.abspath(filename)
     saved_dir = os.getcwd()
     os.chdir(output_dir)
     command = unzip_cmd + [filepath]
     result = RunProcess(command)
     os.chdir(saved_dir)
     if result:
       raise IOError('unzip failed: %s => %s' % (str(command), result))
   else:
-    assert IsWindows()
+    assert IsWindows() or IsMac()
     zf = zipfile.ZipFile(filename)
     for name in zf.namelist():
       if verbose:
         print 'Extracting %s' % name
       zf.extract(name, output_dir)
+      if IsMac():
+        # Restore permission bits.
+        os.chmod(os.path.join(output_dir, name),
+                 zf.getinfo(name).external_attr >> 16L)
 
 
 def RunProcess(command):
   """Runs an arbitrary command.
 
   If output from the call is needed, use RunProcessAndRetrieveOutput instead.
 
   Args:
     command: A list containing the command and args to execute.
 
@@ skipping 3344 matching lines @@
       # The perf dashboard scrapes the "results" step in order to comment on
       # bugs. If you change this, please update the perf dashboard as well.
       bisect_utils.OutputAnnotationStepStart('Results')
     print 'Error: %s' % e.message
     if opts.output_buildbot_annotations:
       bisect_utils.OutputAnnotationStepClosed()
   return 1
 
 if __name__ == '__main__':
   sys.exit(main())