just copy your source DataBase(from your PC C:\xampp\mysql\data\"your data base"), then copy it to the destination folder in your MAC (/Application/Xampp/xamppfiles/var/mysql).
don't forget to set the permission of the new copied folder(your DataBase) in your MAC otherwise you can't see your tables!
to set the permission: -go to the folder of your DataBase(/Application/Xampp/xamppfiles/var/mysql/"your data base") -right click on it -select Get info -in the sharing&permissions you must add your user account(i.e. administrator or everyone) -choose its privilege to Read & Write -choose Apply to enclosed items
enjoy your Database ;)