import argparse

import re

def convert_log(input_file, output_file, version="1.0"):

"""

Converts log files from older formats to a newer format.

Supports version 1.0 and older formats.

"""

try:

with open(input_file, 'r') as infile, open(output_file, 'w') as outfile:

for line in infile:

if version == "1.0":

# Example conversion for version 1.0

# Assuming older format: "Timestamp - Message"

match = re.match(r"(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}) - (.*)", line)

if match:

timestamp = match.group(1)

message = match.group(2)

outfile.write(f"[{timestamp}] {message}\n")

else:

outfile.write(line) # Write unchanged if no match

elif version == "0.9":

# Example conversion for version 0.9

# Assuming older format: "Date: Message"

match = re.match(r"Date: (.*)", line)

if match:

date_message = match.group(1)

parts = date_message.split(" ")

if len(parts) >= 2:

date = parts[0]

message = " ".join(parts[1:])

outfile.write(f"[{date}] {message}\n")

else:

outfile.write(line)

else:

outfile.write(line)

else:

outfile.write(line) # Pass through if version not supported

except FileNotFoundError:

print(f"Error: Input file '{input_file}' not found.")

except Exception as e:

print(f"An error occurred: {e}")

if __name__ == "__main__":

parser = argparse.ArgumentParser(description="Convert log files to a newer format.")

parser.add_argument("input_file", help="Path to the input log file.")

parser.add_argument("output_file", help="Path to the output log file.")

parser.add_argument("--version", default="1.0", help="Version of the log format to convert to (default: 1.0). Supported versions: 0.9, 1.0")

args = parser.parse_args()

convert_log(args.input_file, args.output_file, args.version)