1*89b38723SGetz Mikalsen /*-
2*89b38723SGetz Mikalsen * Copyright (c) 2023 The FreeBSD Foundation
3*89b38723SGetz Mikalsen *
4*89b38723SGetz Mikalsen * This software was developed by Robert Clausecker <fuz@FreeBSD.org>
5*89b38723SGetz Mikalsen * under sponsorship from the FreeBSD Foundation.
6*89b38723SGetz Mikalsen *
7*89b38723SGetz Mikalsen * Redistribution and use in source and binary forms, with or without
8*89b38723SGetz Mikalsen * modification, are permitted provided that the following conditions
9*89b38723SGetz Mikalsen * are met:
10*89b38723SGetz Mikalsen * 1. Redistributions of source code must retain the above copyright
11*89b38723SGetz Mikalsen * notice, this list of conditions and the following disclaimer.
12*89b38723SGetz Mikalsen * 2. Redistributions in binary form must reproduce the above copyright
13*89b38723SGetz Mikalsen * notice, this list of conditions and the following disclaimer in the
14*89b38723SGetz Mikalsen * documentation and/or other materials provided with the distribution.
15*89b38723SGetz Mikalsen *
16*89b38723SGetz Mikalsen * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ''AS IS'' AND
17*89b38723SGetz Mikalsen * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*89b38723SGetz Mikalsen * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*89b38723SGetz Mikalsen * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*89b38723SGetz Mikalsen * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*89b38723SGetz Mikalsen * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*89b38723SGetz Mikalsen * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*89b38723SGetz Mikalsen * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*89b38723SGetz Mikalsen * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*89b38723SGetz Mikalsen * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*89b38723SGetz Mikalsen * SUCH DAMAGE
27*89b38723SGetz Mikalsen */
28*89b38723SGetz Mikalsen
29*89b38723SGetz Mikalsen #include <sys/cdefs.h>
30*89b38723SGetz Mikalsen #include <string.h>
31*89b38723SGetz Mikalsen
32*89b38723SGetz Mikalsen size_t __strcspn(const char *, const char *);
33*89b38723SGetz Mikalsen
34*89b38723SGetz Mikalsen /*
35*89b38723SGetz Mikalsen * We have a fast strcspn() on aarch64. Use it over a direct
36*89b38723SGetz Mikalsen * implementation of strsep for better performance.
37*89b38723SGetz Mikalsen */
38*89b38723SGetz Mikalsen char *
strsep(char ** stringp,const char * delim)39*89b38723SGetz Mikalsen strsep(char **stringp, const char *delim)
40*89b38723SGetz Mikalsen {
41*89b38723SGetz Mikalsen size_t n;
42*89b38723SGetz Mikalsen char *s;
43*89b38723SGetz Mikalsen
44*89b38723SGetz Mikalsen s = *stringp;
45*89b38723SGetz Mikalsen if (s == NULL)
46*89b38723SGetz Mikalsen return (NULL);
47*89b38723SGetz Mikalsen
48*89b38723SGetz Mikalsen n = __strcspn(s, delim);
49*89b38723SGetz Mikalsen if (s[n] == '\0')
50*89b38723SGetz Mikalsen *stringp = NULL;
51*89b38723SGetz Mikalsen else {
52*89b38723SGetz Mikalsen s[n] = '\0';
53*89b38723SGetz Mikalsen *stringp = s + n + 1;
54*89b38723SGetz Mikalsen }
55*89b38723SGetz Mikalsen
56*89b38723SGetz Mikalsen return (s);
57*89b38723SGetz Mikalsen }
58