source: MondoRescue/branches/2.2.5/mindi-busybox/libbb/ask_confirmation.c

/* vi: set sw=4 ts=4: */
/*
 * bb_ask_confirmation implementation for busybox
 *
 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

/* Read a line from stdin.  If the first non-whitespace char is 'y' or 'Y',
 * return 1.  Otherwise return 0.
 */

#include "libbb.h"

int bb_ask_confirmation(void)
{
    int retval = 0;
    int first = 1;
    int c;

    while (((c = getchar()) != EOF) && (c != '\n')) {
        /* Make sure we get the actual function call for isspace,
         * as speed is not critical here. */
        if (first && !(isspace)(c)) {
            --first;
            if ((c == 'y') || (c == 'Y')) {
                ++retval;
            }
        }
    }

    return retval;
}