projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5b2abdfb A |
1 | /* |
| 2 | * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. The name of the author may not be used to endorse or promote products | |
| 14 | * derived from this software without specific prior written permission. | |
| 15 | * | |
| 16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, | |
| 17 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
| 18 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | |
| 19 | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 9385eb3d A |
26 | * |
| 27 | * from OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp | |
| 5b2abdfb A |
28 | */ |
| 29 | ||
| 9385eb3d | 30 | #include <sys/cdefs.h> |
| 5b2abdfb | 31 | #if 0 |
| 9385eb3d A |
32 | #if defined(LIBC_SCCS) && !defined(lint) |
| 33 | __RCSID("$NetBSD: wcslcpy.c,v 1.1 2000/12/23 23:14:36 itojun Exp $"); | |
| 5b2abdfb | 34 | #endif /* LIBC_SCCS and not lint */ |
| 5b2abdfb | 35 | #endif |
| 9385eb3d | 36 | __FBSDID("$FreeBSD: src/lib/libc/string/wcslcpy.c,v 1.6 2002/09/21 00:29:23 tjr Exp $"); |
| 5b2abdfb A |
37 | |
| 38 | #include <sys/types.h> | |
| 9385eb3d | 39 | #include <wchar.h> |
| 5b2abdfb A |
40 | |
| 41 | /* | |
| 42 | * Copy src to string dst of size siz. At most siz-1 characters | |
| 43 | * will be copied. Always NUL terminates (unless siz == 0). | |
| 9385eb3d | 44 | * Returns wcslen(src); if retval >= siz, truncation occurred. |
| 5b2abdfb | 45 | */ |
| 9385eb3d A |
46 | size_t |
| 47 | wcslcpy(dst, src, siz) | |
| 48 | wchar_t *dst; | |
| 49 | const wchar_t *src; | |
| 5b2abdfb A |
50 | size_t siz; |
| 51 | { | |
| 9385eb3d A |
52 | wchar_t *d = dst; |
| 53 | const wchar_t *s = src; | |
| 54 | size_t n = siz; | |
| 5b2abdfb A |
55 | |
| 56 | /* Copy as many bytes as will fit */ | |
| 57 | if (n != 0 && --n != 0) { | |
| 58 | do { | |
| 59 | if ((*d++ = *s++) == 0) | |
| 60 | break; | |
| 61 | } while (--n != 0); | |
| 62 | } | |
| 63 | ||
| 64 | /* Not enough room in dst, add NUL and traverse rest of src */ | |
| 65 | if (n == 0) { | |
| 66 | if (siz != 0) | |
| 67 | *d = '\0'; /* NUL-terminate dst */ | |
| 68 | while (*s++) | |
| 69 | ; | |
| 70 | } | |
| 71 | ||
| 72 | return(s - src - 1); /* count does not include NUL */ | |
| 73 | } |