sfeed

simple feed reader - forked from git.codemadness.org/sfeed
git clone git://src.gearsix.net/sfeedsfeed.zip
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strlcpy.c (raw) (1576B)


   1 /*	$OpenBSD: strlcpy.c,v 1.12 2015/01/15 03:54:12 millert Exp $	*/
   2 
   3 /*
   4  * Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 
  19 #include <string.h>
  20 
  21 /*
  22  * Copy string src to buffer dst of size dsize.  At most dsize-1
  23  * chars will be copied.  Always NUL terminates (unless dsize == 0).
  24  * Returns strlen(src); if retval >= dsize, truncation occurred.
  25  */
  26 size_t
  27 strlcpy(char *dst, const char *src, size_t dsize)
  28 {
  29 	const char *osrc = src;
  30 	size_t nleft = dsize;
  31 
  32 	/* Copy as many bytes as will fit. */
  33 	if (nleft != 0) {
  34 		while (--nleft != 0) {
  35 			if ((*dst++ = *src++) == '\0')
  36 				break;
  37 		}
  38 	}
  39 
  40 	/* Not enough room in dst, add NUL and traverse rest of src. */
  41 	if (nleft == 0) {
  42 		if (dsize != 0)
  43 			*dst = '\0';		/* NUL-terminate dst */
  44 		while (*src++)
  45 			;
  46 	}
  47 
  48 	return(src - osrc - 1);	/* count does not include NUL */
  49 }