From 2e7d4399fd3c3c4a31fd7c673037701232dd259f Mon Sep 17 00:00:00 2001
From: Robby Zambito <contact@robbyzambito.me>
Date: Thu, 25 Nov 2021 08:52:42 -0500
Subject: Add history for readline

Also removed unused function
---
 src/game_loop.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/src/game_loop.c b/src/game_loop.c
index 0ba2be6..a5f1fe0 100644
--- a/src/game_loop.c
+++ b/src/game_loop.c
@@ -20,6 +20,7 @@
 
 #include <errno.h>
 #include <libguile.h>
+#include <readline/history.h>
 #include <readline/readline.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -45,17 +46,6 @@ static enum player_color other_player(enum player_color current_player) {
   }
 }
 
-static int player_number_from_color(enum player_color player) {
-  switch (player) {
-  case WHITE:
-    return 1;
-  case BLACK:
-    return 2;
-  default:
-    return -1;
-  }
-}
-
 static char *prompt_player(enum player_color current_player) {
   switch (current_player) {
   case WHITE:
@@ -81,6 +71,7 @@ static void print_help() {
 }
 
 static void inner_main(void *closure, int argc, char **argv) {
+  (void)closure;
   scm_shell(argc, argv);
 }
 
@@ -94,6 +85,7 @@ static struct move prompt_get_move(enum player_color board[8][8],
     char *input = readline(prompt);
 
     if (input != NULL) {
+      add_history(input);
       if (STREQ(input, "h")) {
         print_help();
       } else if (STREQ(input, "p")) {
@@ -110,6 +102,7 @@ static struct move prompt_get_move(enum player_color board[8][8],
       }
     } else {
       // If input was NULL, we have reached an EOF and would like to exit.
+      free(input);
       exit(0);
     }
 
@@ -185,6 +178,7 @@ const enum player_color **get_board(void) {
 }
 
 enum player_color game_loop(enum player_color init_board[8][8]) {
+  using_history();
 
   // Start with the initial board.
   for (int i = 0; i < 8; i++) {
@@ -209,6 +203,8 @@ enum player_color game_loop(enum player_color init_board[8][8]) {
     }
   }
 
+  rl_clear_history();
+
   return white_score > black_score   ? WHITE
          : black_score > white_score ? BLACK
                                      : EMPTY;
-- 
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