1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * bb_ask_confirmation implementation for busybox
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4 | *
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5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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6 | *
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7 | * This program is free software; you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation; either version 2 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * This program is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 | * General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 | *
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21 | */
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22 |
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23 | /* Read a line from stdin. If the first non-whitespace char is 'y' or 'Y',
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24 | * return 1. Otherwise return 0.
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25 | */
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26 |
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27 | #include <stdio.h>
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28 | #include <ctype.h>
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29 | #include "libbb.h"
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30 |
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31 | int bb_ask_confirmation(void)
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32 | {
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33 | int retval = 0;
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34 | int first = 1;
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35 | int c;
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36 |
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37 | while (((c = getchar()) != EOF) && (c != '\n')) {
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38 | /* Make sure we get the actual function call for isspace,
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39 | * as speed is not critical here. */
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40 | if (first && !(isspace)(c)) {
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41 | --first;
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42 | if ((c == 'y') || (c == 'Y')) {
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43 | ++retval;
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44 | }
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45 | }
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46 | }
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47 |
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48 | return retval;
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49 | }
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