| | 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. |
| | 26 | * |
| | 27 | * from OpenBSD: strlcat.c,v 1.3 2000/11/24 11:10:02 itojun Exp |
| | 28 | */ |
| | 29 | |
| | 30 | #include <sys/cdefs.h> |
| | 31 | #if 0 |
| | 32 | #if defined(LIBC_SCCS) && !defined(lint) |
| | 33 | __RCSID("$NetBSD: wcslcat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $"); |
| | 34 | #endif /* LIBC_SCCS and not lint */ |
| | 35 | #endif |
| | 36 | __FBSDID("$FreeBSD: src/lib/libc/string/wcslcat.c,v 1.7 2009/02/03 17:58:20 danger Exp $"); |
| | 37 | |
| | 38 | #include <sys/types.h> |
| | 39 | #include <wchar.h> |
| | 40 | |
| | 41 | /* |
| | 42 | * Appends src to string dst of size siz (unlike wcsncat, siz is the |
| | 43 | * full size of dst, not space left). At most siz-1 characters |
| | 44 | * will be copied. Always NUL terminates (unless siz == 0). |
| | 45 | * Returns wcslen(initial dst) + wcslen(src); if retval >= siz, |
| | 46 | * truncation occurred. |
| | 47 | */ |
| | 48 | size_t |
| | 49 | wcslcat(wchar_t *dst, const wchar_t *src, size_t siz) |
| | 50 | { |
| | 51 | wchar_t *d = dst; |
| | 52 | const wchar_t *s = src; |
| | 53 | size_t n = siz; |
| | 54 | size_t dlen; |
| | 55 | |
| | 56 | /* Find the end of dst and adjust bytes left but don't go past end */ |
| | 57 | while (*d != '\0' && n-- != 0) |
| | 58 | d++; |
| | 59 | dlen = d - dst; |
| | 60 | n = siz - dlen; |
| | 61 | |
| | 62 | if (n == 0) |
| | 63 | return(dlen + wcslen(s)); |
| | 64 | while (*s != '\0') { |
| | 65 | if (n != 1) { |
| | 66 | *d++ = *s; |
| | 67 | n--; |
| | 68 | } |
| | 69 | s++; |
| | 70 | } |
| | 71 | *d = '\0'; |
| | 72 | |
| | 73 | return(dlen + (s - src)); /* count does not include NUL */ |
| | 74 | } |
projects / apple / libc.git / blame_incremental