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c84142e8 | 1 | /* Copyright (C) 1991, 1994, 1996, 1997 Free Software Foundation, Inc. |
6d52618b | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
6d52618b UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
28f540f4 | 8 | |
6d52618b UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
28f540f4 | 13 | |
6d52618b UD |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
28f540f4 | 18 | |
c84142e8 UD |
19 | #if HAVE_CONFIG_H |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
23 | #if defined _LIBC || HAVE_STRING_H | |
24 | # include <string.h> | |
25 | #else | |
26 | # include <strings.h> | |
27 | # ifndef strchr | |
28 | # define strchr index | |
29 | # endif | |
30 | #endif | |
28f540f4 | 31 | |
6d52618b | 32 | /* Return the length of the maximum initial segment of S |
28f540f4 RM |
33 | which contains no characters from REJECT. */ |
34 | size_t | |
35 | strcspn (s, reject) | |
c84142e8 UD |
36 | const char *s; |
37 | const char *reject; | |
28f540f4 | 38 | { |
c84142e8 | 39 | size_t count = 0; |
28f540f4 RM |
40 | |
41 | while (*s != '\0') | |
42 | if (strchr (reject, *s++) == NULL) | |
43 | ++count; | |
44 | else | |
45 | return count; | |
46 | ||
47 | return count; | |
48 | } |