strcspn.c 1.1 KB

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  1. /* Copyright (C) 1991, 1994, 1996, 1997, 2003 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <string.h>
  15. /* Return the length of the maximum initial segment of S
  16. which contains no characters from REJECT. */
  17. size_t strcspn (const char *s, const char *reject)
  18. {
  19. size_t count = 0;
  20. while (*s != '\0')
  21. if (strchr (reject, *s++) == NULL)
  22. ++count;
  23. else
  24. return count;
  25. return count;
  26. }
  27. libc_hidden_def(strcspn)