/src/tmux/compat/strlcpy.c

Source (jump to first uncovered line)
/*  $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie Exp $  */

/*
 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <string.h>

#include "compat.h"

/*
 * Copy src to string dst of size siz.  At most siz-1 characters
 * will be copied.  Always NUL terminates (unless siz == 0).
 * Returns strlen(src); if retval >= siz, truncation occurred.
 */
size_t
strlcpy(char *dst, const char *src, size_t siz)
{
  char *d = dst;
  const char *s = src;
  size_t n = siz;

  /* Copy as many bytes as will fit */
  if (n != 0 && --n != 0) {
    do {
      if ((*d++ = *s++) == 0)
        break;
    } while (--n != 0);
  }

  /* Not enough room in dst, add NUL and traverse rest of src */
  if (n == 0) {
    if (siz != 0)
      *d = '\0';   /* NUL-terminate dst */
    while (*s++)
      ;
  }

  return(s - src - 1);  /* count does not include NUL */
}

Coverage Report

Created: 2024-07-27 06:19

Line	Count	Source (jump to first uncovered line)
1		/* $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie Exp $ */
2
3		/*
4		* Copyright (c) 1998 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 <sys/types.h>
20		#include <string.h>
21
22		#include "compat.h"
23
24		/*
25		* Copy src to string dst of size siz. At most siz-1 characters
26		* will be copied. Always NUL terminates (unless siz == 0).
27		* Returns strlen(src); if retval >= siz, truncation occurred.
28		*/
29		size_t
30		strlcpy(char dst, const char src, size_t siz)
31	0	{
32	0	char *d = dst;
33	0	const char *s = src;
34	0	size_t n = siz;
35
36		/* Copy as many bytes as will fit */
37	0	if (n != 0 && --n != 0) {
38	0	do {
39	0	if ((d++ = s++) == 0)
40	0	break;
41	0	} while (--n != 0);
42	0	}
43
44		/* Not enough room in dst, add NUL and traverse rest of src */
45	0	if (n == 0) {
46	0	if (siz != 0)
47	0	d = '\0'; / NUL-terminate dst */
48	0	while (*s++)
49	0	;
50	0	}
51
52	0	return(s - src - 1); /* count does not include NUL */
53	0	}