aegis-dos-protection/source/Cli.cpp
2021-10-23 16:53:40 +02:00

108 lines
2.9 KiB
C++

#include "Cli.hpp"
Cli::Cli() {
add_to_commands_list("help, h", "Help Screen", std::bind(&Cli::print_help, &*this, std::placeholders::_1));
add_to_commands_list("exit", "Exit Program", std::bind(&Cli::exit_program, &*this, std::placeholders::_1));
}
void Cli::add_to_commands_list(std::string names, std::string desc, Func func) {
Command cmd = std::make_tuple(names, desc, func);
_commands.push_back(cmd);
}
//--------------------------------------------------------------------------------------------------
//------------------------------------------- Run --------------------------------------------------
//--------------------------------------------------------------------------------------------------
void Cli::run() {
while(!_exit) { iterate(); }
}
void Cli::iterate() {
// Ask for input
std::cout << "\033[1;36mAegis: \033[0m";
std::string input;
std::cin >> input;
// Get parameters
std::deque<std::string> parameters;
std::string line;
std::getline(std::cin, line);
std::istringstream iss(line);
std::string arg;
while (iss >> arg) {
parameters.push_back(arg);
}
// Call matching function
Func todo = get_function(input);
todo(parameters);
}
Func Cli::get_function(std::string input) {
for (Command cmd : _commands) {
// Split command names from _commands
std::vector<std::string> names;
boost::split(names, std::get<0>(cmd), boost::is_any_of(", "));
// Check if input matches any of the names
for (std::string name : names) {
if (name == input) {
return std::get<2>(cmd);
}
}
}
// Default: Basic help command
Cli cli;
return std::bind(&Cli::default_help, cli, std::placeholders::_1);
}
//--------------------------------------------------------------------------------------------------
//--------------------------------------- Local Methods --------------------------------------------
//--------------------------------------------------------------------------------------------------
void Cli::default_help(Args args) {
print("Try 'help'");
}
void Cli::exit_program(Args args) {
_exit = true;
}
void Cli::print_help(Args args) {
print("Commands:\n");
if (_commands.size() == 0) {
print("Expty.");
return;
}
// determine max length of first elements
int max_size = 0;
for (auto& c : _commands) {
int len = std::get<0>(c).length();
max_size = (len > max_size) ? len : max_size;
}
// print every available command
for (auto& c : _commands) {
int spaces_to_add = max_size - std::get<0>(c).length();
if (spaces_to_add < 0 || spaces_to_add > 50) { throw "Internal fatal error."; }
std::string command_text;
command_text += std::get<0>(c);
for (int i = 0; i < spaces_to_add; i++) { command_text += " "; }
command_text += " " + std::get<1>(c);
print(command_text);
}
}
void Cli::syn(Args args) {
if (!args.empty()) {
print("SYN " + args[0]);
} else {
print("SYN");
}
}