32 lines
623 B
C
32 lines
623 B
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Header$ */
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#include <string.h>
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char *
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strtok(register char *string, const char *separators)
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{
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register char *s1, *s2;
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static char *savestring = NULL;
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if (string == NULL) {
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string = savestring;
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if (string == NULL) return (char *)NULL;
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}
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s1 = string + strspn(string, separators);
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if (*s1 == '\0') {
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savestring = NULL;
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return (char *)NULL;
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}
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s2 = strpbrk(s1, separators);
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if (s2 != NULL)
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*s2++ = '\0';
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savestring = s2;
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return s1;
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}
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