blob: 8a648fffcf5835eb1a7666820156b6d088f9779f (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/**
* slibc — Yet another C library
* Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
/**
* Returns length of the initial substring
* that consists entirely of a set of specified
* bytes.
*
* @param string The string.
* @param skipset Bytes allowed in the substring.
* @return The length of the substring.
*
* @since Always.
*/
size_t strspn(const char* string, const char* skipset)
{
char set[256];
char c;
const char* s = string;
memset(set, 0, 256);
while ((c = *skipset++))
set[(size_t)c] = 1;
while ((c = *s++))
if (set[(size_t)c])
break;
return (size_t)(s - 1 - string);
}
|
