Return to strlcpy.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / tmux / compat

Annotation of embedaddon/tmux/compat/strlcpy.c, revision 1.1.1.1

1.1       misho       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: {
                     32:        char *d = dst;
                     33:        const char *s = src;
                     34:        size_t n = siz;
                     35: 
                     36:        /* Copy as many bytes as will fit */
                     37:        if (n != 0 && --n != 0) {
                     38:                do {
                     39:                        if ((*d++ = *s++) == 0)
                     40:                                break;
                     41:                } while (--n != 0);
                     42:        }
                     43: 
                     44:        /* Not enough room in dst, add NUL and traverse rest of src */
                     45:        if (n == 0) {
                     46:                if (siz != 0)
                     47:                        *d = '\0';              /* NUL-terminate dst */
                     48:                while (*s++)
                     49:                        ;
                     50:        }
                     51: 
                     52:        return(s - src - 1);    /* count does not include NUL */
                     53: }