import ctypes

from .api import library


def find_lib(lib):
    r"""
    Find the DLL for a given library.

    Accepts a string or loaded module

    >>> print(find_lib('kernel32').lower())
    c:\windows\system32\kernel32.dll
    """
    if isinstance(lib, str):
        lib = getattr(ctypes.windll, lib)

    size = 1024
    result = ctypes.create_unicode_buffer(size)
    library.GetModuleFileName(lib._handle, result, size)
    return result.value