gnulib/lib/unistr/u32-uctomb.c

/* Store a character in UTF-32 string.
   Copyright (C) 2002, 2005-2006, 2009-2020 Free Software Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2002.

   This program is free software: you can redistribute it and/or modify it
   under the terms of the GNU Lesser General Public License as published
   by the Free Software Foundation; either version 3 of the License, 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

#if defined IN_LIBUNISTRING
/* Tell unistr.h to declare u32_uctomb as 'extern', not 'static inline'.  */
# include "unistring-notinline.h"
#endif

/* Specification.  */
#include "unistr.h"

#if !HAVE_INLINE

int
u32_uctomb (uint32_t *s, ucs4_t uc, int n)
{
  if (uc < 0xd800 || (uc >= 0xe000 && uc < 0x110000))
    {
      if (n > 0)
        {
          *s = uc;
          return 1;
        }
      else
        return -2;
    }
  else
    return -1;
}

#endif