gnulib/lib/unistr/u-endswith.h

/* Substring test for UTF-8/UTF-16/UTF-32 strings.
   Copyright (C) 2002, 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/>.  */

bool
FUNC (const UNIT *str, const UNIT *suffix)
{
  size_t len = U_STRLEN (str);
  size_t suffixlen = U_STRLEN (suffix);

  if (len >= suffixlen)
    return (U_CMP (str + (len - suffixlen), suffix, suffixlen) == 0);
  else
    return false;
}