thirdparty/google_appengine/dev_appserver.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2007 Google Inc.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16 #
  17 """Convenience wrapper for starting an appengine tool."""
  18
  19
  20 import os
  21 import sys
  22
  23 if not hasattr(sys, 'version_info'):
  24   sys.stderr.write('Very old versions of Python are not supported. Please '
  25                    'use version 2.5 or greater.\n')
  26   sys.exit(1)
  27 version_tuple = tuple(sys.version_info[:2])
  28 if version_tuple < (2, 4):
  29   sys.stderr.write('Error: Python %d.%d is not supported. Please use '
  30                    'version 2.5 or greater.\n' % version_tuple)
  31   sys.exit(1)
  32 if version_tuple == (2, 4):
  33   sys.stderr.write('Warning: Python 2.4 is not supported; this program may '
  34                    'break. Please use version 2.5 or greater.\n')
  35
  36 DIR_PATH = os.path.abspath(os.path.dirname(os.path.realpath(__file__)))
  37 SCRIPT_DIR = os.path.join(DIR_PATH, 'google', 'appengine', 'tools')
  38
  39 EXTRA_PATHS = [
  40   DIR_PATH,
  41   os.path.join(DIR_PATH, 'lib', 'antlr3'),
  42   os.path.join(DIR_PATH, 'lib', 'django'),
  43   os.path.join(DIR_PATH, 'lib', 'webob'),
  44   os.path.join(DIR_PATH, 'lib', 'yaml', 'lib'),
  45 ]
  46
  47 SCRIPT_EXCEPTIONS = {
  48   "dev_appserver.py" : "dev_appserver_main.py"
  49 }
  50
  51 def run_file(file_path, globals_, script_dir=SCRIPT_DIR):
  52   """Execute the file at the specified path with the passed-in globals."""
  53   sys.path = EXTRA_PATHS + sys.path
  54   script_name = os.path.basename(file_path)
  55   script_name = SCRIPT_EXCEPTIONS.get(script_name, script_name)
  56   script_path = os.path.join(script_dir, script_name)
  57   execfile(script_path, globals_)
  58
  59 if __name__ == '__main__':
  60   run_file(__file__, globals())