GopherProxy

	strlcpy.c - sbase - suckless unix tools
	git clone git://git.suckless.org/sbase
	Log
	Files
	Refs
	README
	LICENSE
	---
	strlcpy.c (1689B)
	---
	1 /*
	2 * Copyright (c) 1998 Todd C. Miller <[email protected]>
	3 *
	4 * Permission to use, copy, modify, and distribute this software for any
	5 * purpose with or without fee is hereby granted, provided that the above
	6 * copyright notice and this permission notice appear in all copies.
	7 *
	8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANT…
	9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE F…
	11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT …
	14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15 */
	16
	17 #include <string.h>
	18 #include <sys/types.h>
	19
	20 #include "../util.h"
	21
	22 /*
	23 * Copy src to string dst of size siz. At most siz-1 characters
	24 * will be copied. Always NUL terminates (unless siz == 0).
	25 * Returns strlen(src); if retval >= siz, truncation occurred.
	26 */
	27 size_t
	28 strlcpy(char dst, const char src, size_t siz)
	29 {
	30 char *d = dst;
	31 const char *s = src;
	32 size_t n = siz;
	33 /* Copy as many bytes as will fit */
	34 if (n != 0) {
	35 while (--n != 0) {
	36 if ((d++ = s++) == '\0')
	37 break;
	38 }
	39 }
	40 /* Not enough room in dst, add NUL and traverse rest of src */
	41 if (n == 0) {
	42 if (siz != 0)
	43 d = '\0'; / NUL-terminate dst */
	44 while (*s++)
	45 ;
	46 }
	47 return(s - src - 1); /* count does not include NUL */
	48 }
	49
	50 size_t
	51 estrlcpy(char dst, const char src, size_t siz)
	52 {
	53 size_t ret;
	54
	55 if ((ret = strlcpy(dst, src, siz)) >= siz)
	56 eprintf("strlcpy: input string too long\n");
	57
	58 return ret;
	59 }