lib/unistr/u-strncpy.h

   1 /* Copy UTF-8/UTF-16/UTF-32 string.
   2    Copyright (C) 1999, 2002, 2006, 2009-2021 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2002.
   4
   5    This program is free software: you can redistribute it and/or modify it
   6    under the terms of the GNU Lesser General Public License as published
   7    by the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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 License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 UNIT *
  19 FUNC (UNIT *dest, const UNIT *src, size_t n)
  20 {
  21   UNIT *destptr = dest;
  22
  23   for (; n > 0 && (*destptr = *src) != 0; src++, destptr++, n--)
  24     ;
  25
  26   /* This behavior is rarely useful, but it is here for consistency with
  27      strncpy and wcsncpy.  */
  28   for (; n > 0; n--)
  29     *destptr++ = 0;
  30
  31   return dest;
  32 }