使用pywin32 DosDateTimeToTime解压缩DOS打包时间

时间:2012-10-01 14:01:45

标签: python pywin32

是否有人使用pywin32 pywintypes.DosDateTimetoTime将DOS打包日期/时间结构转换为Python中的可读时间格式?

我无法找到有关如何使用此功能的文档,需要哪些参数以及采用何种格式。

我正在编写一个脚本来从旧的DOS备份文件中提取文件,基本上是尝试复制旧的DOS恢复命令。我正在根据找到的http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/dos/restore/brtecdoc.htm

备份文件的格式提取文件

谢谢, 杰

1 个答案:

答案 0 :(得分:1)

它需要两个参数(16位整数),它们与前两个参数相同 DosDateTimeToFileTime

你可以在pywin32的源代码PyWinTypesmodule.cpp中看到:

static PyObject *PyWin_DosDateTimeToTime(PyObject *self, PyObject *args)
{ 
    WORD wFatDate, wFatTime;
    if (!PyArg_ParseTuple(args, "hh", (WORD *)&wFatDate, (WORD *)&wFatTime))
        return NULL;
    FILETIME fd;
    If (!DosDateTimeToFileTime(wFatDate, wFatTime, &fd))
      return PyWin_SetAPIError("DosDateTimeToFileTime");
}

这些必须采用此MSDN link中描述的格式,并且为方便起见,下面复制了相关部分:

wFatDate [in]
The MS-DOS date. The date is a packed value with the following format.
    Bits    Description
    0-4     Day of the month (1–31)
    5-8     Month (1 = January, 2 = February, and so on)
    9-15    Year offset from 1980 (add 1980 to get actual year)

wFatTime [in]
The MS-DOS time. The time is a packed value with the following format.
    Bits    Description
    0-4     Second divided by 2
    5-10    Minute (0–59)
   11-15    Hour (0–23 on a 24-hour clock)