76 lines
2.1 KiB
C
Executable File
76 lines
2.1 KiB
C
Executable File
/*
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* fs/sdcardfs/strtok.h
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*
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* Copyright (c) 2013 Samsung Electronics Co. Ltd
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* Authors: Daeho Jeong, Woojoong Lee, Seunghwan Hyun,
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* Sunghwan Yun, Sungjong Seo
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*
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* This program has been developed as a stackable file system based on
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* the WrapFS which written by
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*
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* Copyright (c) 1998-2011 Erez Zadok
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* Copyright (c) 2009 Shrikar Archak
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* Copyright (c) 2003-2011 Stony Brook University
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* Copyright (c) 2003-2011 The Research Foundation of SUNY
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*
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* This file is dual licensed. It may be redistributed and/or modified
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* under the terms of the Apache 2.0 License OR version 2 of the GNU
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* General Public License.
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*/
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static char *
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strtok_r(char *s, const char *delim, char **last)
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{
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char *spanp;
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int c, sc;
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char *tok;
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/* if (s == NULL && (s = *last) == NULL)
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return NULL; */
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if (s == NULL) {
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s = *last;
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if (s == NULL)
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return NULL;
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}
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/*
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* Skip (span) leading delimiters (s += strspn(s, delim), sort of).
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*/
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cont:
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c = *s++;
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for (spanp = (char *)delim; (sc = *spanp++) != 0;) {
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if (c == sc)
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goto cont;
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}
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if (c == 0) { /* no non-delimiter characters */
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*last = NULL;
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return NULL;
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}
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tok = s - 1;
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/*
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* Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
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* Note that delim must have one NUL; we stop if we see that, too.
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*/
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for (;;) {
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c = *s++;
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spanp = (char *)delim;
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do {
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sc = *spanp++;
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if (sc == c) {
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if (c == 0)
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s = NULL;
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else
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s[-1] = 0;
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*last = s;
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return tok;
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}
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} while (sc != 0);
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}
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/* NOTREACHED */
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}
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