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45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
4 weeks ago
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""":mod:`wand.cdefs.structures` --- MagickWand C typedefs
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. versionadded:: 0.5.0
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"""
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import ctypes
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import os
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import sys
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__all__ = ('c_magick_real_t', 'c_magick_size_t', 'c_ssize_t')
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if not hasattr(ctypes, 'c_ssize_t'):
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if ctypes.sizeof(ctypes.c_uint) == ctypes.sizeof(ctypes.c_void_p):
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ctypes.c_ssize_t = ctypes.c_int
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elif ctypes.sizeof(ctypes.c_ulong) == ctypes.sizeof(ctypes.c_void_p):
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ctypes.c_ssize_t = ctypes.c_long
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elif ctypes.sizeof(ctypes.c_ulonglong) == ctypes.sizeof(ctypes.c_void_p):
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ctypes.c_ssize_t = ctypes.c_longlong
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c_ssize_t = ctypes.c_ssize_t
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env_real = os.getenv('WAND_REAL_TYPE', 'auto')
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if env_real in ('double', 'c_double'):
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c_magick_real_t = ctypes.c_double
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elif env_real in ('longdouble', 'c_longdouble'):
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c_magick_real_t = ctypes.c_longdouble
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else:
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# Attempt to guess MagickRealType size
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if sys.maxsize > 2**32:
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c_magick_real_t = ctypes.c_double
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else:
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c_magick_real_t = ctypes.c_longdouble
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del env_real
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# FIXME: Might need to rewrite to check against c_void_p size;
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# like `c_ssize_t` above, and not against window platform.
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if ctypes.sizeof(ctypes.c_size_t) == 8:
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c_magick_size_t = ctypes.c_size_t
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elif ctypes.sizeof(ctypes.c_ulonglong) == 8:
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c_magick_size_t = ctypes.c_ulonglong
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else:
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c_magick_size_t = ctypes.c_uint64
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