reactos/sdk/lib/crt/string/strtok_s.c

/* Taken from Wine Staging msvcrt/string.c */

#include <precomp.h>
#include <internal/wine/msvcrt.h>

/*********************************************************************
 *		strtok_s  (MSVCRT.@)
 */
char * CDECL strtok_s(char *str, const char *delim, char **ctx)
{
    if (!MSVCRT_CHECK_PMT(delim != NULL)) return NULL;
    if (!MSVCRT_CHECK_PMT(ctx != NULL)) return NULL;
    if (!MSVCRT_CHECK_PMT(str != NULL || *ctx != NULL)) return NULL;

    if(!str)
        str = *ctx;

    while(*str && strchr(delim, *str))
        str++;
    if(!*str)
    {
        *ctx = str;
        return NULL;
    }

    *ctx = str+1;
    while(**ctx && !strchr(delim, **ctx))
        (*ctx)++;
    if(**ctx)
        *(*ctx)++ = 0;

    return str;
}