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annotate port/C/extern/strlcpy.c @ 563:668975a91fb2

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Misc: add executable.cpp, get the executable path
author David Demelier <markand@malikania.fr>
date Tue, 21 Jun 2016 15:55:57 +0200
parents dc1b5143c5e3
children 266f32919d0a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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3 * Copyright (c) 2012 David Demelier <markand@malikania.fr>
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4 *
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5 * Permission to use, copy, modify, and distribute this software for any
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6 * purpose with or without fee is hereby granted, provided that the above
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7 * copyright notice and this permission notice appear in all copies.
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8 *
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9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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16 */
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17
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18 #include <stddef.h>
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19
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20 /*
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21 * Copy src to string dst of size siz. At most siz-1 characters
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22 * will be copied. Always NUL terminates (unless siz == 0).
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23 * Returns strlen(src); if retval >= siz, truncation occurred.
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24 */
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25 size_t
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26 strlcpy(char *dst, const char *src, size_t siz)
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27 {
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28 char *d = dst;
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29 const char *s = src;
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30 size_t n = siz;
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31
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32 /* Copy as many bytes as will fit */
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33 if (n != 0) {
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34 while (--n != 0) {
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35 if ((*d++ = *s++) == '\0')
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36 break;
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37 }
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38 }
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39
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40 /* Not enough room in dst, add NUL and traverse rest of src */
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41 if (n == 0) {
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42 if (siz != 0)
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43 *d = '\0'; /* NUL-terminate dst */
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44 while (*s++)
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45 ;
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46 }
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47
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48 return(s - src - 1); /* count does not include NUL */
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49 }