libopkg/user.c

   1 /* user.c - the opkg package management system
   2
   3    Jamey Hicks
   4
   5    Copyright (C) 2002 Hewlett Packard Company
   6    Copyright (C) 2001 University of Southern California
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17 */
  18 #include <stdio.h>
  19 #include <stdarg.h>
  20 #include <unistd.h>
  21 #include "file_util.h"
  22 #include "str_util.h"
  23
  24 char *get_user_response(const char *format, ...)
  25 {
  26         va_list ap;
  27         char *response;
  28
  29         va_start(ap, format);
  30         vprintf(format, ap);
  31         va_end(ap);
  32
  33         if (!isatty(fileno(stdin)))
  34                 return NULL;
  35
  36         response = (char *)file_read_line_alloc(stdin);
  37         if (response == NULL)
  38                 return NULL;
  39
  40         str_chomp(response);
  41         str_tolower(response);
  42
  43         return response;
  44 }