python 讀取文件 start address, size 並保存

TODO: 增加描述

import os, sys, datetime, time

def save_file(content):
    filename = "out" + datetime.datetime.now().strftime('%Y%m%d%H%M%S.log')
    fp_out = open(filename, 'w+')
    fp_out.write(content)
    fp_out.close()

def read_file(argv):
    if len(argv) != 4:
        print("parameter error")
        os._exit(0)
    input_file = argv[1]
    if argv[2].find('0x') < 0:
        start_address = int(argv[2])
    else:
        start_address = int(sys.argv[2], 16)

    if argv[3].find('0x') < 0:
        read_size = int(argv[3])
    else:
        read_size = int(sys.argv[3], 16)

    fp_in = open(input_file, 'r')
    fp_in.seek(start_address, 0)
    text = fp_in.read(read_size)
    save_file(text)
    fp_in.close()
    print("dump OK")
    os._exit(0)

if __name__ == "__main__":
    try:
        read_file(sys.argv)
    finally:
        print "exception catched"
        os._exit(0)

命令:

python main.py ~/customer/coolkit/err.bin 64 0x38

第三個和第四個參數, 十六進制和十進制均可.