genwincodec.py 文件源码

def genwinmap(codepage):
    MultiByteToWideChar = ctypes.windll.kernel32.MultiByteToWideChar
    MultiByteToWideChar.argtypes = [wintypes.UINT, wintypes.DWORD,
                                    wintypes.LPCSTR, ctypes.c_int,
                                    wintypes.LPWSTR, ctypes.c_int]
    MultiByteToWideChar.restype = ctypes.c_int

    enc2uni = {}

    for i in range(32) + [127]:
        enc2uni[i] = (i, 'CONTROL CHARACTER')

    for i in range(256):
        buf = ctypes.create_unicode_buffer(2)
        ret = MultiByteToWideChar(
            codepage, 0,
            chr(i), 1,
            buf, 2)
        assert ret == 1, "invalid code page"
        assert buf[1] == '\x00'
        try:
            name = unicodedata.name(buf[0])
        except ValueError:
            try:
                name = enc2uni[i][1]
            except KeyError:
                name = ''

        enc2uni[i] = (ord(buf[0]), name)

    return enc2uni