luci-py: Making __file__ usage unicode safe.

client/run_isolated.py

 #!/usr/bin/env python
 # Copyright 2012 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """Runs a command with optional isolated input/output.
 
 Despite name "run_isolated", can run a generic non-isolated command specified as
 args.
 
@@ skipping 40 matching lines @@
 import auth
 import cipd
 import isolateserver
 
 
 ISOLATED_OUTDIR_PARAMETER = '${ISOLATED_OUTDIR}'
 EXECUTABLE_SUFFIX_PARAMETER = '${EXECUTABLE_SUFFIX}'
 SWARMING_BOT_FILE_PARAMETER = '${SWARMING_BOT_FILE}'
 
 # Absolute path to this file (can be None if running from zip on Mac).
-THIS_FILE_PATH = os.path.abspath(__file__) if __file__ else None
+THIS_FILE_PATH = os.path.abspath(
+    __file__.decode(sys.getfilesystemencoding())) if __file__ else None
 
 # Directory that contains this file (might be inside zip package).
-BASE_DIR = os.path.dirname(THIS_FILE_PATH) if __file__ else None
+BASE_DIR = os.path.dirname(THIS_FILE_PATH) if __file__.decode(
+    sys.getfilesystemencoding()) else None
 
 # Directory that contains currently running script file.
 if zip_package.get_main_script_path():
   MAIN_DIR = os.path.dirname(
       os.path.abspath(zip_package.get_main_script_path()))
 else:
   # This happens when 'import run_isolated' is executed at the python
   # interactive prompt, in that case __file__ is undefined.
   MAIN_DIR = None
 
@@ skipping 111 matching lines @@
 def run_command(command, cwd, tmp_dir, hard_timeout, grace_period):
   """Runs the command.
 
   Returns:
     tuple(process exit code, bool if had a hard timeout)
   """
   logging.info('run_command(%s, %s)' % (command, cwd))
 
   env = os.environ.copy()
   if sys.platform == 'darwin':
-    env['TMPDIR'] = tmp_dir.encode('ascii')
+    env['TMPDIR'] = tmp_dir.encode(sys.getfilesystemencoding())
   elif sys.platform == 'win32':
-    env['TEMP'] = tmp_dir.encode('ascii')
+    env['TEMP'] = tmp_dir.encode(sys.getfilesystemencoding())
   else:
-    env['TMP'] = tmp_dir.encode('ascii')
+    env['TMP'] = tmp_dir.encode(sys.getfilesystemencoding())
   exit_code = None
   had_hard_timeout = False
   with tools.Profiler('RunTest'):
     proc = None
     had_signal = []
     try:
       # TODO(maruel): This code is imperfect. It doesn't handle well signals
       # during the download phase and there's short windows were things can go
       # wrong.
       def handler(signum, _frame):
@@ skipping 534 matching lines @@
   except cipd.Error as ex:
     print >> sys.stderr, ex.message
     return 1
 
 
 if __name__ == '__main__':
   subprocess42.inhibit_os_error_reporting()
   # Ensure that we are always running with the correct encoding.
   fix_encoding.fix_encoding()
   sys.exit(main(sys.argv[1:]))