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