M main.c → main.c

@@ -5,8 +5,20 @@ #include <poll.h>
 #include <termios.h>
 #include <unistd.h>
 
-int main() {
+void move_cursor(int direction) {
+  if (direction == -1) {
+    printf("\x0D ");
+    printf("\x0D\x1B[1A>");
+    printf("\x0D");
+  } else if (direction == 1) {
+    printf("\x0D ");
+    printf("\x0D\x1B[1B>");
+    printf("\x0D");
+  }
+  fflush(stdout);
+}
 
+struct termios setup_term() {
   struct termios old, new;
 
   tcgetattr(STDIN_FILENO, &old);
@@ -19,15 +31,22 @@ new.c_cc[VTIME] = 0; // time before return
 
   tcsetattr(STDIN_FILENO, TCSANOW, &new);
 
+  return old;
+}
+
+void return_term(struct termios *old) { tcsetattr(STDIN_FILENO, TCSANOW, old); }
+
+void menu() {
   struct pollfd poller[1];
 
   poller[0].fd = STDIN_FILENO;
   poller[0].events = POLLIN;
 
-  printf("Pressed characters:\n");
+  printf(" hallo\n felix\n lass\n minecraft\n spielen\n");
+  printf("\x1B[5A>\x0D");
+  fflush(stdout);
 
   uint8_t run = 1;
-
   while (run) {
     int events = poll(poller, 1, -1);
     if (events > 0 && poller[0].revents & POLLIN) {
@@ -36,16 +55,24 @@ uint16_t length = read(STDIN_FILENO, buffer, sizeof(buffer));
       if (length > 0) {
         uint8_t i;
         for (i = 0; i < length; i++) {
-          printf(" %x", buffer[i]);
-          if (buffer[i] == 'Q')
+          if (buffer[i] == 'q')
             run = 0;
+          else if (buffer[i] == 'j') {
+            move_cursor(1);
+          } else if (buffer[i] == 'k') {
+            move_cursor(-1);
+          }
         }
-        printf("\n");
       }
     }
   }
+}
 
-  tcsetattr(STDIN_FILENO, TCSANOW, &old);
+int main() {
+  struct termios old = setup_term();
 
+  menu();
+
+  return_term(&old);
   return 0;
 }