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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
66 lines
3 KiB
C
66 lines
3 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 tw=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: strlcat.c,v 1.19 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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* Appends string, the BSD way.
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*
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* Appends `src` to string `dst` of size `dsize` (unlike strncat,
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* `dsize` is the full size of `dst`, not space left). At most `dsize-1`
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* characters will be copied. Always NUL terminates (unless `dsize <=
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* strlen(dst)`). Returns `strlen(src) + MIN(dsize, strlen(initial
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* dst))`. If `retval >= dsize`, truncation occurred.
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*
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* @asyncsignalsafe
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* @vforksafe
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*/
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size_t
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strlcat(char *dst, const char *src, size_t dsize)
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{
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const char *odst = dst;
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const char *osrc = src;
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size_t n = dsize;
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size_t dlen;
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/* Find the end of dst and adjust bytes left but don't go past end. */
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while (n-- != 0 && *dst != '\0')
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dst++;
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dlen = dst - odst;
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n = dsize - dlen;
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if (n-- == 0)
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return(dlen + strlen(src));
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while (*src != '\0') {
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if (n != 0) {
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*dst++ = *src;
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n--;
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}
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src++;
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}
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*dst = '\0';
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return(dlen + (src - osrc)); /* count does not include NUL */
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}
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