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Annotation of mandoc/compat_strndup.c, Revision 1.3

1.3     ! schwarze    1: /*     $Id: compat_strndup.c,v 1.2 2020/06/15 01:37:15 schwarze Exp $  */
        !             2: /*     $OpenBSD: strndup.c,v 1.3 2019/01/25 00:19:25 millert Exp $     */
        !             3:
1.1       schwarze    4: /*
1.3     ! schwarze    5:  * Copyright (c) 2010 Todd C. Miller <millert@openbsd.org>
1.1       schwarze    6:  *
                      7:  * Permission to use, copy, modify, and distribute this software for any
                      8:  * purpose with or without fee is hereby granted, provided that the above
                      9:  * copyright notice and this permission notice appear in all copies.
                     10:  *
                     11:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     12:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     13:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     14:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     15:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     16:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     17:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     18:  */
1.2       schwarze   19: #include "config.h"
1.1       schwarze   20:
                     21: #include <sys/types.h>
                     22:
                     23: #include <stdlib.h>
                     24: #include <string.h>
                     25:
                     26: char *
                     27: strndup(const char *str, size_t maxlen)
                     28: {
                     29:        char *copy;
                     30:        size_t len;
                     31:
                     32:        for (len = 0; len < maxlen && str[len] != '\0'; len++)
                     33:                continue;
                     34:
                     35:        copy = malloc(len + 1);
                     36:        if (copy != NULL) {
                     37:                (void)memcpy(copy, str, len);
                     38:                copy[len] = '\0';
                     39:        }
                     40:
                     41:        return copy;
                     42: }