wcsmbs/mbrlen.c

   1 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <wchar.h>
  20
  21 /* The mbrlen function has an internal shift state which gets used if
  22    the PS parameter is NULL.  */
  23 static mbstate_t internal;
  24
  25
  26 size_t
  27 __mbrlen (const char *s, size_t n, mbstate_t *ps)
  28 {
  29   return __mbrtowc (NULL, s, n, ps ?: &internal);
  30 }
  31 libc_hidden_def (__mbrlen)
  32 weak_alias (__mbrlen, mbrlen)