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Annotation of mandoc/compat_strlcpy.c, Revision 1.1

1.1     ! kristaps    1: #ifdef HAVE_STRLCPY
        !             2:
        !             3: int dummy;
        !             4:
        !             5: #else
        !             6:
        !             7: /*     $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $    */
        !             8:
        !             9: /*
        !            10:  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
        !            11:  *
        !            12:  * Permission to use, copy, modify, and distribute this software for any
        !            13:  * purpose with or without fee is hereby granted, provided that the above
        !            14:  * copyright notice and this permission notice appear in all copies.
        !            15:  *
        !            16:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            17:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            18:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            19:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            20:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            21:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            22:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            23:  */
        !            24:
        !            25: #include <sys/types.h>
        !            26: #include <string.h>
        !            27:
        !            28: /*
        !            29:  * Copy src to string dst of size siz.  At most siz-1 characters
        !            30:  * will be copied.  Always NUL terminates (unless siz == 0).
        !            31:  * Returns strlen(src); if retval >= siz, truncation occurred.
        !            32:  */
        !            33: size_t
        !            34: strlcpy(char *dst, const char *src, size_t siz)
        !            35: {
        !            36:        char *d = dst;
        !            37:        const char *s = src;
        !            38:        size_t n = siz;
        !            39:
        !            40:        /* Copy as many bytes as will fit */
        !            41:        if (n != 0) {
        !            42:                while (--n != 0) {
        !            43:                        if ((*d++ = *s++) == '\0')
        !            44:                                break;
        !            45:                }
        !            46:        }
        !            47:
        !            48:        /* Not enough room in dst, add NUL and traverse rest of src */
        !            49:        if (n == 0) {
        !            50:                if (siz != 0)
        !            51:                        *d = '\0';              /* NUL-terminate dst */
        !            52:                while (*s++)
        !            53:                        ;
        !            54:        }
        !            55:
        !            56:        return(s - src - 1);    /* count does not include NUL */
        !            57: }
        !            58:
        !            59: #endif