conversion of securities code to EDINET code

We are trying to create a program to obtain financial results (XBRL) of listed companies from EDINET.At that time, I would like to use the securities code instead of the EDINET code, so I would like to automatically obtain the EDINET code from the securities code.

Example: 7203→E02144 (Toyota Motors)

I would like to deal with future listed companies, so I would like to get them from published resources if possible instead of having a conversion table inside the program.

Please let me know if there is any information available or helpful.

Also, I plan to create the program in Ruby on Linux.If your source is a library, etc., any OS language is OK.