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/*
FUNCTION
<<wcsspn>>---get length of a wide substring
SYNOPSIS
#include <wchar.h>
size_t wcsspn(const wchar_t *<[s]>, const wchar_t *<[set]>);
DESCRIPTION
The <<wcsspn>> function computes the length of the maximum initial
segment of the wide-character string pointed to by <[s]> which consists
entirely of wide-character codes from the wide-character string
pointed to by <[set]>.
RETURNS
The wcsspn() function returns the length <[s1]>; no return value is
reserved to indicate an error.
PORTABILITY
<<wcsspn>> is ISO/IEC 9899/AMD1:1995 (ISO C).
No supporting OS subroutines are required.
*/
/* $NetBSD: wcsspn.c,v 1.1 2000/12/23 23:14:37 itojun Exp $ */
/*-
* Copyright (c)1999 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* citrus Id: wcsspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
*/
#include <_ansi.h>
#include <wchar.h>
size_t
_DEFUN (wcsspn, (s, set),
const wchar_t * s,
const wchar_t * set)
{
const wchar_t *p;
const wchar_t *q;
p = s;
while (*p)
{
q = set;
while (*q)
{
if (*p == *q)
break;
q++;
}
if (!*q)
goto done;
p++;
}
done:
return (p - s);
}
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