1 | /* |
---|
2 | FUNCTION |
---|
3 | <<wcsncat>>---concatenate part of two wide-character strings |
---|
4 | |
---|
5 | SYNOPSIS |
---|
6 | #include <wchar.h> |
---|
7 | wchar_t *wcsncat(wchar_t *__restrict <[s1]>, |
---|
8 | const wchar_t *__restrict <[s2]>, size_t <[n]>); |
---|
9 | |
---|
10 | DESCRIPTION |
---|
11 | The <<wcsncat>> function appends not more than <[n]> wide-character |
---|
12 | codes (a null wide-character code and wide-character codes that follow |
---|
13 | it are not appended) from the array pointed to by <[s2]> to the end of |
---|
14 | the wide-character string pointed to by <[s1]>. The initial |
---|
15 | wide-character code of <[s2]> overwrites the null wide-character code |
---|
16 | at the end of <[s1]>. |
---|
17 | A terminating null wide-character code is always appended to the result. |
---|
18 | If copying takes place between objects that overlap, the behaviour is |
---|
19 | undefined. |
---|
20 | |
---|
21 | RETURNS |
---|
22 | The <<wcsncat>> function returns <[s1]>; no return value is reserved to |
---|
23 | indicate an error. |
---|
24 | |
---|
25 | PORTABILITY |
---|
26 | <<wcsncat>> is ISO/IEC 9899/AMD1:1995 (ISO C). |
---|
27 | |
---|
28 | No supporting OS subroutines are required. |
---|
29 | */ |
---|
30 | |
---|
31 | /* $NetBSD: wcsncat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $ */ |
---|
32 | |
---|
33 | /*- |
---|
34 | * Copyright (c)1999 Citrus Project, |
---|
35 | * All rights reserved. |
---|
36 | * |
---|
37 | * Redistribution and use in source and binary forms, with or without |
---|
38 | * modification, are permitted provided that the following conditions |
---|
39 | * are met: |
---|
40 | * 1. Redistributions of source code must retain the above copyright |
---|
41 | * notice, this list of conditions and the following disclaimer. |
---|
42 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
43 | * notice, this list of conditions and the following disclaimer in the |
---|
44 | * documentation and/or other materials provided with the distribution. |
---|
45 | * |
---|
46 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
---|
47 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
48 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
49 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
---|
50 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
---|
51 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
---|
52 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
---|
53 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
---|
54 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
---|
55 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
---|
56 | * SUCH DAMAGE. |
---|
57 | * |
---|
58 | * citrus Id: wcsncat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp |
---|
59 | */ |
---|
60 | |
---|
61 | #include <_ansi.h> |
---|
62 | #include <wchar.h> |
---|
63 | |
---|
64 | wchar_t * |
---|
65 | wcsncat (wchar_t *__restrict s1, |
---|
66 | const wchar_t *__restrict s2, |
---|
67 | size_t n) |
---|
68 | { |
---|
69 | wchar_t *p; |
---|
70 | wchar_t *q; |
---|
71 | const wchar_t *r; |
---|
72 | |
---|
73 | p = s1; |
---|
74 | while (*p) |
---|
75 | p++; |
---|
76 | q = p; |
---|
77 | r = s2; |
---|
78 | while (*r && n) |
---|
79 | { |
---|
80 | *q++ = *r++; |
---|
81 | n--; |
---|
82 | } |
---|
83 | *q = '\0'; |
---|
84 | return s1; |
---|
85 | } |
---|