lib/strpbrk.c

   1 /* Copyright (C) 1991, 1994, 2000, 2002-2003, 2006, 2009-2024 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 file is free software: you can redistribute it and/or modify
   8    it under the terms of the GNU Lesser General Public License as
   9    published by the Free Software Foundation; either version 2.1 of the
  10    License, or (at your option) any later version.
  11
  12    This file 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 Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser 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 }