cleanlifelog.py

#!/usr/bin/env python3
#
# cleanlifelog.py
#
# save life.log to life.log.timestamp
# read ~/rosbot-on-gopigo3/life.log file into list
# starting at next to last line
# loop until "boot logged line"
#    if line is an execution log line: delete it
#    else point to previous line
# write out modified file

import datetime
from shutil import copyfile
import argparse


dtNow = datetime.datetime.now()

inFileName = "/home/ubuntu/HumbleDave/life.log"
outFileName = "/home/ubuntu/HumbleDave/life.log"
# bkupFileName = "/home/pi/Carl/life.log.bkup_"+dtNow.strftime("%Y%m%d_%H%M%S")
bkupFileName = "/home/ubuntu/HumbleDave/tmp/life.log.bak"

# Uncomment these to test in ~/Carl/Projects/CleanLifeLog/
# inFileName = "life.log.test"
# outFileName = "life.log.new"
# bkupFileName = "life.log.bkup_"+dtNow.strftime("%Y%m%d_%H%M%S")

# ARGUMENT PARSER
ap = argparse.ArgumentParser()
# ap.add_argument("-f", "--file", required=True, help="path to input file")
# ap.add_argument("-n", "--num", type=int, default=5, help="number")
ap.add_argument("-p", "--previous", default=False, action='store_true', help="clean previous boot session")
args = vars(ap.parse_args())
# print("Started with args:",args)
clean_previous_session = args['previous']



changed = False

with open(inFileName) as fIn:
    lineList = fIn.readlines()
print("Read in {}".format(inFileName))
lines = len(lineList)
lineIdx = lines - 1
last = -1
print("lines: {}".format(lines))
print("lastline: {}".format(lineList[last]))
bootlogline = "----- boot -----"
executionlogline = "dEmain execution:"

if (clean_previous_session == True):
    # Find last boot log line
    while (bootlogline not in lineList[lineIdx]):
        lineIdx -=1
    lineIdx -=1

# Find last execution log line before the last boot log line
while ((bootlogline not in lineList[lineIdx]) and (executionlogline not in lineList[lineIdx])):
    lineIdx -= 1

# leave the last execution log line
if (executionlogline in lineList[lineIdx]):
    lineIdx -= 1

while (bootlogline not in lineList[lineIdx]):
    # print("Checking line {}".format(lineIdx+1))
    if (executionlogline in lineList[lineIdx]):
        print("removing: {}".format(lineList[lineIdx]))
        del lineList[lineIdx]
        changed = True
    lineIdx -= 1

if changed == True:
    # backup the original file before rewriting with changes
    copyfile(inFileName, bkupFileName)
    with open(outFileName,'w') as fOut:
        fOut.writelines(lineList)

    print("Wrote cleaned {}".format(outFileName))
    lines = len(lineList)
    print("lines: {}".format(lines))
    print("lastline: {}".format(lineList[last]))
else:
    print("File not changed")