libopkg/user.c

   1 /* user.c - the itsy 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
  19 #include <stdio.h>
  20 #include <stdarg.h>
  21 #include "file_util.h"
  22 #include "str_util.h"
  23 #include "libopkg.h"
  24
  25
  26 static char *question = NULL;
  27 static int question_len = 255;
  28
  29 char *get_user_response(const char *format, ...)
  30 {
  31      int len = question_len;
  32      va_list ap;
  33      char *response;
  34      va_start(ap, format);
  35
  36      do {
  37           if (question == NULL || len > question_len) {
  38                question = realloc(question, len + 1);
  39                question_len = len;
  40           }
  41           len = vsnprintf(question,question_len,format,ap);
  42      } while (len > question_len);
  43      response = strdup(opkg_cb_response(question));
  44      str_chomp(response);
  45      str_tolower(response);
  46
  47      return response;
  48 }