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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6557 | serge | 1 | /* |
| 2 | FUNCTION |
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| 3 | < |
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| 4 | |||
| 5 | ANSI_SYNOPSIS |
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| 6 | #include |
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| 7 | wchar_t *wcsstr(const wchar_t *__restrict <[big]>, |
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| 8 | const wchar_t *__restrict <[little]>); |
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| 9 | |||
| 10 | TRAD_SYNOPSIS |
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| 11 | wchar_t *wcsstr(<[big]>, <[little]> |
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| 12 | const wchar_t *__restrict <[big]>; |
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| 13 | const wchar_t *__restrict <[little]>; |
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| 14 | |||
| 15 | DESCRIPTION |
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| 16 | The < |
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| 17 | wide-character string pointed to by <[big]> of the sequence of |
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| 18 | wide characters (excluding the terminating null wide character) in the |
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| 19 | wide-character string pointed to by <[little]>. |
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| 20 | |||
| 21 | RETURNS |
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| 22 | On successful completion, < |
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| 23 | wide-character string, or a null pointer if the wide-character string |
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| 24 | is not found. |
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| 25 | |||
| 26 | If <[little]> points to a wide-character string with zero length, |
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| 27 | the function returns <[big]>. |
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| 28 | |||
| 29 | PORTABILITY |
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| 30 | < |
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| 31 | |||
| 32 | */ |
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| 33 | |||
| 34 | /* $NetBSD: wcsstr.c,v 1.1 2000/12/23 23:14:37 itojun Exp $ */ |
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| 35 | |||
| 36 | /*- |
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| 37 | * Copyright (c)1999 Citrus Project, |
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| 38 | * All rights reserved. |
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| 39 | * |
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| 40 | * Redistribution and use in source and binary forms, with or without |
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| 41 | * modification, are permitted provided that the following conditions |
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| 42 | * are met: |
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| 43 | * 1. Redistributions of source code must retain the above copyright |
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| 44 | * notice, this list of conditions and the following disclaimer. |
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| 45 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 46 | * notice, this list of conditions and the following disclaimer in the |
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| 47 | * documentation and/or other materials provided with the distribution. |
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| 48 | * |
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| 49 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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| 50 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 51 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 52 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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| 53 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 54 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 55 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 56 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 57 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 58 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 59 | * SUCH DAMAGE. |
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| 60 | * |
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| 61 | * citrus Id: wcsstr.c,v 1.2 2000/12/21 05:07:25 itojun Exp |
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| 62 | */ |
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| 63 | |||
| 64 | #include <_ansi.h> |
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| 65 | #include |
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| 66 | #include |
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| 67 | |||
| 68 | wchar_t * |
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| 69 | _DEFUN (wcsstr, (big, little), |
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| 70 | _CONST wchar_t *__restrict big _AND |
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| 71 | _CONST wchar_t *__restrict little) |
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| 72 | { |
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| 73 | _CONST wchar_t *p; |
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| 74 | _CONST wchar_t *q; |
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| 75 | _CONST wchar_t *r; |
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| 76 | |||
| 77 | if (!*little) |
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| 78 | { |
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| 79 | /* LINTED interface specification */ |
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| 80 | return (wchar_t *) big; |
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| 81 | } |
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| 82 | if (wcslen (big) < wcslen (little)) |
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| 83 | return NULL; |
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| 84 | |||
| 85 | p = big; |
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| 86 | q = little; |
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| 87 | while (*p) |
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| 88 | { |
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| 89 | q = little; |
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| 90 | r = p; |
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| 91 | while (*q) |
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| 92 | { |
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| 93 | if (*r != *q) |
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| 94 | break; |
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| 95 | q++; |
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| 96 | r++; |
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| 97 | } |
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| 98 | if (!*q) |
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| 99 | { |
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| 100 | /* LINTED interface specification */ |
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| 101 | return (wchar_t *) p; |
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| 102 | } |
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| 103 | p++; |
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| 104 | } |
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| 105 | return NULL; |
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| 106 | } |