strspn.c
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strspn.c
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	/* Copyright (C) 1991, 1997, 2003 Free Software Foundation, Inc.
	This file is part of the GNU C Library.

	The GNU C Library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Lesser General Public
	License as published by the Free Software Foundation; either
	version 2.1 of the License, or (at your option) any later version.

	The GNU C Library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public
	License along with the GNU C Library; if not, write to the Free
	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	02111-1307 USA. */

	#include <string.h>

	#undef strspn

	/* Return the length of the maximum initial segment
	of S which contains only characters in ACCEPT. */
	size_t
	rpl_strspn (const char s, const char accept)
	{
	const char *p;
	const char *a;
	size_t count = 0;

	for (p = s; *p != '\0'; ++p)
	{
	for (a = accept; *a != '\0'; ++a)
	if (p == a)
	break;
	if (*a == '\0')
	return count;
	else
	++count;
	}

	return count;
	}