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Annotation of embedaddon/pimd/libite/strlcpy.c, revision 1.1

1.1     ! misho       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 <sys/types.h>
        !            20: #include <string.h>
        !            21: 
        !            22: #ifndef strlcpy
        !            23: /*
        !            24:  * Copy string src to buffer dst of size dsize.  At most dsize-1
        !            25:  * chars will be copied.  Always NUL terminates (unless dsize == 0).
        !            26:  * Returns strlen(src); if retval >= dsize, truncation occurred.
        !            27:  */
        !            28: size_t
        !            29: strlcpy(char *dst, const char *src, size_t dsize)
        !            30: {
        !            31:        const char *osrc = src;
        !            32:        size_t nleft = dsize;
        !            33: 
        !            34:        /* Copy as many bytes as will fit. */
        !            35:        if (nleft != 0) {
        !            36:                while (--nleft != 0) {
        !            37:                        if ((*dst++ = *src++) == '\0')
        !            38:                                break;
        !            39:                }
        !            40:        }
        !            41: 
        !            42:        /* Not enough room in dst, add NUL and traverse rest of src. */
        !            43:        if (nleft == 0) {
        !            44:                if (dsize != 0)
        !            45:                        *dst = '\0';            /* NUL-terminate dst */
        !            46:                while (*src++)
        !            47:                        ;
        !            48:        }
        !            49: 
        !            50:        return(src - osrc - 1); /* count does not include NUL */
        !            51: }
        !            52: #endif