#-------------------------------------------------------------------------------
# log_cleaner
# 22/03/2022
# tool script used to remove unwanted lines from log files
#
# usage ex: python log_cleaner.py "+/-" file pattern
#-------------------------------------------------------------------------------

import sys
import re
import io

def main():

    input_file = io.open(sys.argv[1], "r", encoding="utf-8")
    output_file = io.open("new_" + sys.argv[1], "w", encoding="utf-8")

    inverter = sys.argv[2]
    if inverter == "-":
        exclude = True
    else:
        exclude = False

    pattern = sys.argv[3]
    p = re.compile(r".*" + pattern + r".*")

    for line in input_file:
        val = re.search(p, line)
        if val:
            if exclude:
                pass
            else:
                output_file.write(line)
        else:
            if exclude:
                output_file.write(line)
            else:
                pass

    output_file.close()
    input_file.close()

if __name__ == "__main__":
    main()