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In this exercise you'll be processing log-lines.

Each log line is a string formatted as follows: "[<LEVEL>]: <MESSAGE>".

There are three different log levels:

  • INFO
  • WARNING
  • ERROR

You have three tasks, each of which will take a log line and ask you to do something with it.

1. Get message from a log line

Implement the (static) LogLine.Message() method to return a log line's message:

LogLine.Message("[ERROR]: Invalid operation")
// => "Invalid operation"

Any leading or trailing white space should be removed:

LogLine.Message("[WARNING]:  Disk almost full\r\n")
// => "Disk almost full"

2. Get log level from a log line

Implement the (static) LogLine.LogLevel() method to return a log line's log level, which should be returned in lowercase:

LogLine.LogLevel("[ERROR]: Invalid operation")
// => "error"

3. Reformat a log line

Implement the (static) LogLine.Reformat() method that reformats the log line, putting the message first and the log level after it in parentheses:

LogLine.Reformat("[INFO]: Operation completed")
// => "Operation completed (info)"