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())