#!/usr/bin/env python

#

# Copyright 2007 Google Inc.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#

"""Convenience wrapper for starting an appengine tool."""

import os

import sys

if not hasattr(sys, 'version_info'):

  sys.stderr.write('Very old versions of Python are not supported. Please '

                   'use version 2.5 or greater.\n')

  sys.exit(1)

version_tuple = tuple(sys.version_info[:2])

if version_tuple < (2, 4):

  sys.stderr.write('Error: Python %d.%d is not supported. Please use '

                   'version 2.5 or greater.\n' % version_tuple)

  sys.exit(1)

if version_tuple == (2, 4):

  sys.stderr.write('Warning: Python 2.4 is not supported; this program may '

                   'break. Please use version 2.5 or greater.\n')

DIR_PATH = os.path.abspath(os.path.dirname(os.path.realpath(__file__)))

SCRIPT_DIR = os.path.join(DIR_PATH, 'google', 'appengine', 'tools')

EXTRA_PATHS = [

  DIR_PATH,

  os.path.join(DIR_PATH, 'lib', 'antlr3'),

  os.path.join(DIR_PATH, 'lib', 'django'),

  os.path.join(DIR_PATH, 'lib', 'webob'),

  os.path.join(DIR_PATH, 'lib', 'yaml', 'lib'),

]

SCRIPT_EXCEPTIONS = {

  "dev_appserver.py" : "dev_appserver_main.py"

}

def run_file(file_path, globals_, script_dir=SCRIPT_DIR):

  """Execute the file at the specified path with the passed-in globals."""

  sys.path = EXTRA_PATHS + sys.path

  script_name = os.path.basename(file_path)

  script_name = SCRIPT_EXCEPTIONS.get(script_name, script_name)

  script_path = os.path.join(script_dir, script_name)

  execfile(script_path, globals_)

if __name__ == '__main__':

  run_file(__file__, globals())