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