| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2019 Intel Corporation |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| from ctypes import string_at |
| |
| MAGIC = 0x55aa |
| SLOT_LEN = 64 |
| SLOT_NUM = int(8192 / SLOT_LEN) |
| |
| def read_bytes(buffer): |
| return int.from_bytes(buffer, byteorder='little') |
| |
| class Loglist: |
| """Loglist class""" |
| |
| def __init__(self, argument, debug=False, offset=0): |
| """Constructor for the loglist takes argument filename or buffer""" |
| |
| if isinstance(argument, str): |
| f = open(argument, "rb") |
| f.seek(offset) |
| self.buffer = f.read(SLOT_NUM * SLOT_LEN) |
| elif isinstance(argument, int): |
| self.buffer = string_at(argument, SLOT_NUM * SLOT_LEN) |
| else: |
| return |
| |
| self.loglist = [] |
| self.parse() |
| self.debug = debug |
| |
| def parse_slot(self, slot): |
| magic = read_bytes(slot[0:2]) |
| |
| if magic == MAGIC: |
| id_num = read_bytes(slot[2:4]) |
| logstr = slot[4:].decode(errors='replace') |
| self.loglist.append((id_num, logstr)) |
| |
| def parse(self): |
| for x in range(0, SLOT_NUM): |
| slot = self.buffer[x * SLOT_LEN : (x + 1) * SLOT_LEN] |
| self.parse_slot(slot) |
| |
| def print(self): |
| for pair in sorted(self.loglist): |
| if self.debug: |
| # Add slot number when debug is enabled |
| print('[{}] : {}'.format(*pair), end='') |
| else: |
| print('{}'.format(pair[1]), end='') |
