third_party/google/protobuf/internal/api_implementation.py - Issue 1162993005: Renamed google.protobuf to protobuf26

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Issue 1162993005: Renamed google.protobuf to protobuf26 (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/tools/depot_tools

Patch Set: Created 5 years, 6 months ago

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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 """Determine which implementation of the protobuf API is used in this process.

32 """

33

34 import os

35 import sys

36

37 try:

38 # pylint: disable=g-import-not-at-top

39 from google.protobuf.internal import _api_implementation

40 # The compile-time constants in the _api_implementation module can be used to

41 # switch to a certain implementation of the Python API at build time.

42 _api_version = _api_implementation.api_version

43 del _api_implementation

44 except ImportError:

45 _api_version = 0

46

47 _default_implementation_type = (

48 'python' if _api_version == 0 else 'cpp')

49 _default_version_str = (

50 '1' if _api_version <= 1 else '2')

51

52 # This environment variable can be used to switch to a certain implementation

53 # of the Python API, overriding the compile-time constants in the

54 # _api_implementation module. Right now only 'python' and 'cpp' are valid

55 # values. Any other value will be ignored.

56 _implementation_type = os.getenv('PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION',

57 _default_implementation_type)

58

59 if _implementation_type != 'python':

60 _implementation_type = 'cpp'

61

62 # This environment variable can be used to switch between the two

63 # 'cpp' implementations, overriding the compile-time constants in the

64 # _api_implementation module. Right now only 1 and 2 are valid values. Any other

65 # value will be ignored.

66 _implementation_version_str = os.getenv(

67 'PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION',

68 _default_version_str)

69

70 if _implementation_version_str not in ('1', '2'):

71 raise ValueError(

72 "unsupported PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION: '" +

73 _implementation_version_str + "' (supported versions: 1, 2)"

74 )

75

76 _implementation_version = int(_implementation_version_str)

77

78

79 # Usage of this function is discouraged. Clients shouldn't care which

80 # implementation of the API is in use. Note that there is no guarantee

81 # that differences between APIs will be maintained.

82 # Please don't use this function if possible.

83 def Type():

84 return _implementation_type

85

86

87 # See comment on 'Type' above.

88 def Version():

89 return _implementation_version

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