lib/strpbrk.c

   1 /* Copyright (C) 1991, 1994, 2000, 2002-2003, 2006, 2009-2020 Free Software
   2    Foundation, Inc.
   3
   4    NOTE: The canonical source of this file is maintained with the GNU C Library.
   5    Bugs can be reported to bug-glibc@prep.ai.mit.edu.
   6
   7    This program is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published by the
   9    Free Software Foundation; either version 2, or (at your option) any
  10    later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, see <https://www.gnu.org/licenses/>.  */
  19
  20 #include <config.h>
  21
  22 #include <stddef.h>
  23 #include <string.h>
  24
  25 #if _LIBC
  26 # undef strpbrk
  27 #endif
  28
  29 /* Find the first occurrence in S of any character in ACCEPT.  */
  30 char *
  31 strpbrk (const char *s, const char *accept)
  32 {
  33   while (*s != '\0')
  34     {
  35       const char *a = accept;
  36       while (*a != '\0')
  37         if (*a++ == *s)
  38           return (char *) s;
  39       ++s;
  40     }
  41
  42   return NULL;
  43 }