strtok.c

来自「avr单片机的一些实际应用源码」· C语言 代码 · 共 20 行

#include <string.h>

char *strtok(char *s1, CONST char *s2)
	{	/* find next token in s1[] delimited by s2[] */
	char *sbegin, *send;
	static char *ssave;

	sbegin = (s1) ? s1 : ssave;
	sbegin += strspn(sbegin, s2);
	if (*sbegin == '\0')
		{	/* end of scan */
		return 0;
		}
	send = strpbrk(sbegin, s2);
	if (*send != '\0')
		*send++ = '\0';
	ssave = send;
	return sbegin;
	}