[Patashu]

I would write in a better* programming language and use regexes with capture groups to parse each line and spit out the individual elements for you

*better for non robotic beings

your regex would be something like
(\w+) \[(\d+),(\d+),(\d+),(\d+),(\d+)\]\[(\d+)\]\[(\d+)\]
(make sure to double all backslashes if your language doesn't have a way to specify to ignore them, like @" in C# and r" in python)
then you can search a line for that regex, take the match and use the contents of each match (first match will be username, second match onwards will be da numbers)