add history and command completion to readline

This commit is contained in:
Maximilian Keßler 2023-08-12 09:36:06 +02:00
parent 74fe5513da
commit 4718698ddc
Signed by: max
GPG Key ID: BCC5A619923C0BA5
2 changed files with 70 additions and 10 deletions

View File

@ -1,5 +1,6 @@
#include <cstdio>
#include <readline/readline.h>
#include <readline/history.h>
#include <iostream>
#include <memory>
#include <cmath>
@ -28,6 +29,37 @@ namespace Hanabi {
return ret;
}
constexpr static std::array<std::string, 10> cli_commands = {
"play",
"clue",
"discard",
"id",
"state",
"revert",
"actions",
"evaluate",
"help",
"quit",
};
char * cli_commands_generator(const char *text, int state) {
std::string text_str (text);
for(auto& command : cli_commands) {
if (command.starts_with(text_str) && state-- <= 0) {
return strdup(command.c_str());
}
}
return nullptr;
}
char **
cli_command_completion(const char *text, int start, int end)
{
rl_attempted_completion_over = 1;
return rl_completion_matches(text, cli_commands_generator);
}
Card parse_card(std::string card_str) {
if (card_str == "trash") {
return Cards::trash;
@ -56,16 +88,18 @@ namespace Hanabi {
}
std::cout << "Choose drawn card: " << std::endl;
unsigned num_trash = 0;
std::optional<probability_t> trash_discard_prob = 0;
for(const auto &[card_multiplicity, probability]: next_states) {
if (game->is_trash(card_multiplicity.card)) {
num_trash += card_multiplicity.multiplicity;
trash_discard_prob = probability;
} else {
std::cout << card_multiplicity.card << " (" << card_multiplicity.multiplicity;
std::cout << " copie(s) in draw) " << probability << std::endl;
}
}
if (num_trash > 0) {
std::cout << Cards::trash << " (" << num_trash << " copie(s) in draw" << std::endl;
std::cout << Cards::trash << " (" << num_trash << " copie(s) in draw) " << trash_discard_prob << std::endl;
}
std::stringstream prompt;
@ -103,22 +137,33 @@ namespace Hanabi {
return true;
}
[[noreturn]] void cli(const std::shared_ptr<HanabiStateIF>& game) {
void cli(const std::shared_ptr<HanabiStateIF>& game) {
rl_attempted_completion_function = cli_command_completion;
using_history();
unsigned depth = 0;
while (true) {
const std::string prompt = read_line_memory_safe("> ");
add_history(prompt.c_str());
if (prompt.starts_with("help")) {
std::cout << "state: print information on current game state." << std::endl;
std::cout << "clue: give a clue." << std::endl;
std::cout << "state: print information on current game state." << std::endl;
std::cout << "clue: give a clue." << std::endl;
std::cout << "play <card>: play specified card." << std::endl;
std::cout << "discard: discard trash from hand." << std::endl;
std::cout << "revert: revert last turn of game." << std::endl;
std::cout << "actions: display list of reasonable actions to take and their winning chances." << std::endl;
std::cout << "id: display id of state. Has no inherent meaning, useful for debugging." << std::endl;
std::cout << "evaluate: evaluate current game state recursively. Potentially runtime-expensive." << std::endl;
std::cout << "discard: discard trash from hand." << std::endl;
std::cout << "revert: revert last turn of game." << std::endl;
std::cout << "actions: display list of reasonable actions to take and their winning chances." << std::endl;
std::cout << "evaluate: evaluate current game state recursively. Potentially runtime-expensive." << std::endl;
std::cout << "id: display id of state. Has no inherent meaning, useful for debugging." << std::endl;
std::cout << "quit: Quit this interactive shell." << std::endl;
continue;
}
if (prompt.starts_with("quit")) {
std::cout << "Quitting." << std::endl;
clear_history();
break;
}
if (prompt.starts_with("state")) {
std::cout << *game << std::endl;
const std::optional<probability_t> prob = game->lookup();
@ -130,11 +175,17 @@ namespace Hanabi {
std::cout << "Evaluating current game state, this might take a while." << std::endl;
game->evaluate_state();
std::cout << "Evaluated state." << std::endl;
continue;
}
if (prompt.starts_with("revert")) {
if (depth == 0) {
std::cout << "Cannot revert more than base state." << std::endl;
continue;
}
std::cout << "Reverting one turn" << std::endl;
game->revert();
depth--;
continue;
}
@ -147,6 +198,7 @@ namespace Hanabi {
const Card card = parse_card(prompt.substr(5,2));
if (prompt.length() < 7) {
std::cout << "No card specified." << std::endl;
continue;
}
if (card == Cards::unknown) {
std::cout << "Could not parse card " << prompt.substr(5,2) << std::endl;
@ -155,11 +207,13 @@ namespace Hanabi {
const hand_index_t index = game->find_card_in_hand(card);
if (index == hand_index_t(-1)) {
std::cout << "This card is not in the current players hand, aborting." << std::endl;
continue;
}
if (!ask_for_card_and_rotate_draw(game, index, true)) {
continue;
}
game->play(index);
depth++;
continue;
}
@ -184,11 +238,17 @@ namespace Hanabi {
continue;
}
game->discard(trash_index);
depth++;
continue;
}
if (prompt.starts_with("clue")) {
if (game->num_clues() == 0) {
std::cout << "You cannot give a clue at 0 clues." << std::endl;
continue;
}
game->give_clue();
depth++;
continue;
}

View File

@ -5,7 +5,7 @@
#include "game_state.h"
namespace Hanabi {
[[noreturn]] [[noreturn]] void cli(const std::shared_ptr<HanabiStateIF>& game);
void cli(const std::shared_ptr<HanabiStateIF>& game);
}