extractor.py 文件源码

def io_dd(indir, offset, size, outdir):
        """
        Given a path to a target file, extract size bytes from specified offset
        to given output file.
        """
        if not size:
            return

        with open(indir, "rb") as ifp:
            with open(outdir, "wb") as ofp:
                ifp.seek(offset, 0)
                ofp.write(ifp.read(size))