/* Simple test program that uses readline in callback mode. Whenever
 * rlwrap misbehaves, please run this program to make sure it is not
 * a readline problem.
 *
 *  compile with gcc -otest rltest4.c   -lreadline -lncurses
 */


#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>
#include <sys/select.h>

void show_history_list() {
  HISTORY_STATE *state =  history_get_history_state();
  int i;
  printf("History list now:\n");
  for (i=0; i < state->length; i++) {
    printf("%d: '%s'%s\n",
	   i, state->entries[i]->line, (i == state->offset? "*":""));
  }
}

void line_handler(char *line) {
  if (!line)
    exit (0);
  add_history(line);
  printf("You typed: '%s'\n", line);
  show_history_list();
}

int main() {
  using_history();
  rl_callback_handler_install("Enter a line: ", &line_handler);

  while (1) {
    fd_set fds;

    FD_ZERO(&fds);
    FD_SET(STDIN_FILENO, &fds);

    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) < 0)
      exit(1);

    rl_callback_read_char();
  }
  /*  not reached */
  return 42;
}