xref: /reactos/sdk/lib/crt/mbstring/mbsspn.c (revision 3e1f4074) 
1 /*
2  * COPYRIGHT:   See COPYING in the top level directory
3  * PROJECT:     ReactOS system libraries
4  * FILE:        lib/sdk/crt/mbstring/mbsspn.c
5  * PURPOSE:
6  * PROGRAMER:
7  * UPDATE HISTORY:
8  *              05/30/08: Samuel Serapion adapted from PROJECT C Library
9  *
10  */
11 
12 #include <precomp.h>
13 #include <mbstring.h>
14 
15 /*
16  * @implemented
17  */
18 size_t _mbsspn (const unsigned char *str1, const unsigned char *str2)
19 {
20     int c;
21     const unsigned char *save = str1;
22 
23     while ((c = _mbsnextc (str1))) {
24 
25 	if (_mbschr (str2, c) == 0)
26 	    break;
27 
28 	str1 = _mbsinc ((unsigned char *) str1);
29 
30     }
31 
32     return str1 - save;
33 }
34