Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6557 | serge | 1 | /* |
| 2 | FUNCTION |
||
| 3 | < |
||
| 4 | |||
| 5 | ANSI_SYNOPSIS |
||
| 6 | #include |
||
| 7 | size_t wcslcat(wchar_t *<[dst]>, const wchar_t *<[src]>, size_t <[siz]>); |
||
| 8 | |||
| 9 | TRAD_SYNOPSIS |
||
| 10 | #include |
||
| 11 | size_t wcslcat(<[dst]>, <[src]>, <[siz]> |
||
| 12 | wchar_t *<[dst]>; |
||
| 13 | const wchar_t *<[src]>; |
||
| 14 | size_t <[siz]>; |
||
| 15 | |||
| 16 | DESCRIPTION |
||
| 17 | The < |
||
| 18 | end of the <[dst]> wide-character string so that the resultant |
||
| 19 | wide-character string is not more than <[siz]> wide characters |
||
| 20 | including the terminating null wide-character code. A terminating |
||
| 21 | null wide character is always added unless <[siz]> is 0. Thus, |
||
| 22 | the maximum number of wide characters that can be appended from |
||
| 23 | <[src]> is <[siz]> - 1. If copying takes place between objects |
||
| 24 | that overlap, the behaviour is undefined. |
||
| 25 | |||
| 26 | RETURNS |
||
| 27 | Wide-character string length of initial <[dst]> plus the |
||
| 28 | wide-character string length of <[src]> (does not include |
||
| 29 | terminating null wide-characters). If the return value is |
||
| 30 | greater than or equal to <[siz]>, then truncation occurred and |
||
| 31 | not all wide characters from <[src]> were appended. |
||
| 32 | |||
| 33 | PORTABILITY |
||
| 34 | No supporting OS subroutines are required. |
||
| 35 | */ |
||
| 36 | |||
| 37 | /* $NetBSD: wcslcat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $ */ |
||
| 38 | /* from OpenBSD: strlcat.c,v 1.3 2000/11/24 11:10:02 itojun Exp */ |
||
| 39 | |||
| 40 | /* |
||
| 41 | * Copyright (c) 1998 Todd C. Miller |
||
| 42 | * All rights reserved. |
||
| 43 | * |
||
| 44 | * Redistribution and use in source and binary forms, with or without |
||
| 45 | * modification, are permitted provided that the following conditions |
||
| 46 | * are met: |
||
| 47 | * 1. Redistributions of source code must retain the above copyright |
||
| 48 | * notice, this list of conditions and the following disclaimer. |
||
| 49 | * 2. Redistributions in binary form must reproduce the above copyright |
||
| 50 | * notice, this list of conditions and the following disclaimer in the |
||
| 51 | * documentation and/or other materials provided with the distribution. |
||
| 52 | * 3. The name of the author may not be used to endorse or promote products |
||
| 53 | * derived from this software without specific prior written permission. |
||
| 54 | * |
||
| 55 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
||
| 56 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
||
| 57 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
||
| 58 | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
||
| 59 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
||
| 60 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
||
| 61 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
||
| 62 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
||
| 63 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
||
| 64 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 65 | */ |
||
| 66 | |||
| 67 | #include <_ansi.h> |
||
| 68 | #include |
||
| 69 | |||
| 70 | /* |
||
| 71 | * Appends src to string dst of size siz (unlike wcsncat, siz is the |
||
| 72 | * full size of dst, not space left). At most siz-1 characters |
||
| 73 | * will be copied. Always NUL terminates (unless siz == 0). |
||
| 74 | * Returns wcslen(initial dst) + wcslen(src); if retval >= siz, |
||
| 75 | * truncation occurred. |
||
| 76 | */ |
||
| 77 | size_t |
||
| 78 | _DEFUN (wcslcat, (dst, src, siz), |
||
| 79 | wchar_t * dst _AND |
||
| 80 | _CONST wchar_t * src _AND |
||
| 81 | size_t siz) |
||
| 82 | { |
||
| 83 | wchar_t *d = dst; |
||
| 84 | _CONST wchar_t *s = src; |
||
| 85 | size_t n = siz; |
||
| 86 | size_t dlen; |
||
| 87 | |||
| 88 | /* Find the end of dst and adjust bytes left but don't go past end */ |
||
| 89 | while (*d != '\0' && n-- != 0) |
||
| 90 | d++; |
||
| 91 | dlen = d - dst; |
||
| 92 | n = siz - dlen; |
||
| 93 | |||
| 94 | if (n == 0) |
||
| 95 | return (dlen + wcslen (s)); |
||
| 96 | while (*s != '\0') |
||
| 97 | { |
||
| 98 | if (n != 1) |
||
| 99 | { |
||
| 100 | *d++ = *s; |
||
| 101 | n--; |
||
| 102 | } |
||
| 103 | s++; |
||
| 104 | } |
||
| 105 | *d = '\0'; |
||
| 106 | |||
| 107 | return (dlen + (s - src)); /* count does not include NUL */ |
||
| 108 | } |