This application locates any stocks you have in your ledger-cli file, then generates a price database of those stocks compatible with the application.
Build the go file, and run as follows:
./[name of executable] -f=[ledger file] -p=[price database file (to create or update)]
This should spit out a price database file, which can then be used to calculate the market value in ledger as follows:
ledger -f [ledger file] --price-db [price database file] -V bal