1/* vi: set sw=4 ts=4: */
2/*
3 * bb_ask_confirmation implementation for busybox
4 *
5 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10/* Read a line from stdin.  If the first non-whitespace char is 'y' or 'Y',
11 * return 1.  Otherwise return 0.
12 */
13
14#include "libbb.h"
15
16int bb_ask_confirmation(void)
17{
18	int retval = 0;
19	int first = 1;
20	int c;
21
22	while (((c = getchar()) != EOF) && (c != '\n')) {
23		/* Make sure we get the actual function call for isspace,
24		 * as speed is not critical here. */
25		if (first && !(isspace)(c)) {
26			--first;
27			if ((c == 'y') || (c == 'Y')) {
28				++retval;
29			}
30		}
31	}
32
33	return retval;
34}
35