How can I determine which characters belong to a local EVE account?

Hi everyone,

I’m working with EVE’s local configuration files and want to figure out the mapping between accounts and characters.

Account configs are stored as core_user_<accountID>.dat and character configs as core_char_<charID>.dat. For development purposes, I’d like to clearly display which characters belong to which accounts—for example, that user 1111 owns character 22222.

I can get character names from the ESI API using their IDs. However, is there any way to determine this mapping locally without having to log in and modify the config manually? I only need to access information stored on my own machine.

Thanks in advance for any tips!