mirror of
https://github.com/jart/cosmopolitan.git
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2fc507c98f
* modelines: tw -> sw shiftwidth, not textwidth. * space-surround modelines * fix irregular modelines * Fix modeline in titlegen.c
58 lines
2.8 KiB
C
58 lines
2.8 KiB
C
/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
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│ vi: set noet ft=c ts=8 sw=8 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org> │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/str/str.h"
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// clang-format off
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// $OpenBSD: strlcpy.c,v 1.16 2019/01/25 00:19:25 millert Exp $
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asm(".ident\t\"\\n\\n\
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OpenBSD Strings (ISC)\\n\
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Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org>\"");
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asm(".include \"libc/disclaimer.inc\"");
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/**
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* Copies string, the BSD way.
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*
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* Copy string src to buffer `dst` of size `dsize`. At most `dsize-1`
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* chars will be copied. Always NUL terminates (unless `dsize == 0`).
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* Returns `strlen(src)`; if `retval >= dsize`, truncation occurred.
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*/
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size_t
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strlcpy(char *dst, const char *src, size_t dsize)
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{
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const char *osrc = src;
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size_t nleft = dsize;
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/* Copy as many bytes as will fit. */
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if (nleft != 0) {
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while (--nleft != 0) {
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if ((*dst++ = *src++) == '\0')
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break;
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}
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}
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/* Not enough room in dst, add NUL and traverse rest of src. */
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if (nleft == 0) {
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if (dsize != 0)
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*dst = '\0'; /* NUL-terminate dst */
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while (*src++)
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;
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}
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return(src - osrc - 1); /* count does not include NUL */
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}
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