diplodocus.org Git - nmh/blob - sbr/read_yes_or_no_if_tty.c

   1 /* read_yes_or_no_if_tty.c -- get a yes/no answer from the user
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9
  10
  11 int
  12 read_yes_or_no_if_tty (const char *prompt)
  13 {
  14     static int interactive = -1;
  15
  16     if (interactive < 0)
  17         interactive = isatty (fileno (stdin));
  18
  19     return interactive ? read_switch(prompt, anoyes) : 1;
  20 }