strpbrk.c

UNIX下SH的实现源码

/* Copyright (C) 1991, 1994 Free Software Foundation, Inc.
   NOTE: The canonical source of this file is maintained with the GNU C Library.
   Bugs can be reported to [e-mail].

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any
   later version.

   This program 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 General Public License for more details.

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

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#if !defined (HAVE_STRPBRK)

#include <stdc.h>

/* Find the first ocurrence in S of any character in ACCEPT.  */
char *
strpbrk (s, accept)
     register const char *s;
     register const char *accept;
{
  while (*s != '\0')
    {
      const char *a = accept;
      while (*a != '\0')
	if (*a++ == *s)
	  return (char *) s;
      ++s;
    }

  return 0;
}
#endif