Added non persitent history

lw12ctl.c

@@ -11,6 +11,7 @@
 #include <unistd.h>
 
 #include <readline/readline.h>
+#include <readline/history.h>
 
 #include "lw12.h"
 
@@ -156,8 +157,7 @@ int parse_commands(int argc, char *argv[]) {
 void cmd_loop() {
 #define max_args 10
 #define buf_size 256
-    char cmdbuf[buf_size];
-    char *cmd;
+    char *cmd, *cmd_start;
     char *pos;
     char *argv[max_args];
     int argc;
@@ -167,7 +167,7 @@ void cmd_loop() {
         if (cmd == NULL)
             break;
 
-        pos = cmd;
+        cmd_start = pos = cmd;
         while (*pos != '\0') {
             // convert \n to separate argument
             if (*pos == '\n') {
@@ -202,9 +202,9 @@ void cmd_loop() {
         }
 
         parse_commands(argc, argv);
+        add_history(cmd_start);
 
-        if (cmd != cmdbuf)
-            free(cmd);
+        free(cmd);
 
     } while (!exit_interactive_session);
 }
@@ -213,6 +213,8 @@ int main() {
     char serverip[] = "192.168.178.24";
     uint16_t serverport = 5000;
 
+    rl_bind_key('\t', rl_abort);
+
     lw12_connect(&sockfd, &server_addr, serverport, serverip);
     cmd_loop();
     close(sockfd);