struct augmentation

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LICENSE

The MIT License (MIT)

Copyright (c) 2015 Joshua Downer

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

struct_augment.py

"""
This script is used to augment the information in the struct module.

The intended usage is,

    import struct
    import struct_augment

This will augment the struct module with additional information in the module
where is it imported.

"""

import struct


setattr(struct, "characters", {'x', 'c', 'b', 'B', '?', 'h', 'H', 'i', 'I', 'l', 'L', 'q', 'Q', 'f', 'd', 's', 'p', 'P'})

setattr(struct, "SIZE_PAD_BYTE"          , struct.calcsize("x"))
setattr(struct, "SIZE_CHAR"              , struct.calcsize("c"))
setattr(struct, "SIZE_SIGNED_CHAR"       , struct.calcsize("b"))
setattr(struct, "SIZE_UNSIGNED_CHAR"     , struct.calcsize("B"))
setattr(struct, "SIZE_BOOL"              , struct.calcsize("?"))
setattr(struct, "SIZE_SHORT"             , struct.calcsize("h"))
setattr(struct, "SIZE_UNSIGNED_SHORT"    , struct.calcsize("H"))
setattr(struct, "SIZE_INT"               , struct.calcsize("i"))
setattr(struct, "SIZE_UNSIGNED_INT"      , struct.calcsize("I"))
setattr(struct, "SIZE_LONG"              , struct.calcsize("l"))
setattr(struct, "SIZE_UNSIGNED_LONG"     , struct.calcsize("L"))
setattr(struct, "SIZE_LONG_LONG"         , struct.calcsize("q"))
setattr(struct, "SIZE_UNSIGNED_LONG_LONG", struct.calcsize("Q"))
setattr(struct, "SIZE_FLOAT"             , struct.calcsize("f"))
setattr(struct, "SIZE_DOUBLE"            , struct.calcsize("d"))
setattr(struct, "SIZE_VOID_POINTER"      , struct.calcsize("P"))