Use a hashmap instead of comparing strings with strcmp

[Chronophylos]

Using a hashmap like

std::unordered_map<std::string, std::function<int(char** argv, int argc, std::string fileName)> fn>

is a lot more performant than comparing strings with strcmp in a giant if-else-block.

Or a more simple solution

enum Functions { Open, Close, Write \* ... *\ };
std::unordered_map<std::string, Function> function_map;

[Sparker95]

Thanks, I think it will do for our simple case, until we have hundreds of functions perhaps.