| #! /usr/bin/python |
| # -*- python -*- |
| # -*- coding: utf-8 -*- |
| |
| def hexbitmask(l, nr_entries): |
| hexbitmask = [] |
| bit = 0 |
| mask = 0 |
| for entry in range(nr_entries): |
| if entry in l: |
| mask |= (1 << bit) |
| bit += 1 |
| if bit == 32: |
| bit = 0 |
| hexbitmask.insert(0, mask) |
| mask = 0 |
| |
| if bit < 32 and mask != 0: |
| hexbitmask.insert(0, mask) |
| |
| return hexbitmask |
| |
| def bitmasklist(line, nr_entries): |
| fields = line.strip().split(",") |
| bitmasklist = [] |
| entry = 0 |
| for i in range(len(fields) - 1, -1, -1): |
| mask = int(fields[i], 16) |
| while mask != 0: |
| if mask & 1: |
| bitmasklist.append(entry) |
| mask >>= 1 |
| entry += 1 |
| if entry == nr_entries: |
| break |
| if entry == nr_entries: |
| break |
| return bitmasklist |
