/thirdparty/breakpad/third_party/protobuf/protobuf/python/google/protobuf/internal/api_implementation.py

http://github.com/tomahawk-player/tomahawk · Python · 64 lines · 8 code · 7 blank · 49 comment · 1 complexity · f93b3c9923d5c042d7577d634eff2f12 MD5 · raw file

  1. # Protocol Buffers - Google's data interchange format
  2. # Copyright 2008 Google Inc. All rights reserved.
  3. # http://code.google.com/p/protobuf/
  4. #
  5. # Redistribution and use in source and binary forms, with or without
  6. # modification, are permitted provided that the following conditions are
  7. # met:
  8. #
  9. # * Redistributions of source code must retain the above copyright
  10. # notice, this list of conditions and the following disclaimer.
  11. # * Redistributions in binary form must reproduce the above
  12. # copyright notice, this list of conditions and the following disclaimer
  13. # in the documentation and/or other materials provided with the
  14. # distribution.
  15. # * Neither the name of Google Inc. nor the names of its
  16. # contributors may be used to endorse or promote products derived from
  17. # this software without specific prior written permission.
  18. #
  19. # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20. # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21. # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22. # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23. # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24. # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25. # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26. # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27. # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28. # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29. # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30. """
  31. This module is the central entity that determines which implementation of the
  32. API is used.
  33. """
  34. __author__ = 'petar@google.com (Petar Petrov)'
  35. import os
  36. # This environment variable can be used to switch to a certain implementation
  37. # of the Python API. Right now only 'python' and 'cpp' are valid values. Any
  38. # other value will be ignored.
  39. _implementation_type = os.getenv('PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION',
  40. 'python')
  41. if _implementation_type != 'python':
  42. # For now, by default use the pure-Python implementation.
  43. # The code below checks if the C extension is available and
  44. # uses it if it is available.
  45. _implementation_type = 'cpp'
  46. ## Determine automatically which implementation to use.
  47. #try:
  48. # from google.protobuf.internal import cpp_message
  49. # _implementation_type = 'cpp'
  50. #except ImportError, e:
  51. # _implementation_type = 'python'
  52. # Usage of this function is discouraged. Clients shouldn't care which
  53. # implementation of the API is in use. Note that there is no guarantee
  54. # that differences between APIs will be maintained.
  55. # Please don't use this function if possible.
  56. def Type():
  57. return _implementation_type