1 /* Search character in UTF-16 string.
2 Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2002.
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU Library General Public License as published
7 by the Free Software Foundation; either version 2, or (at your option)
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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
25 #include "ucs4-utf16.h"
28 u16_strrchr (const uint16_t *s, ucs4_t uc)
30 /* Calling u16_strlen and then searching from the other end would cause more
31 memory accesses. Avoid that, at the cost of a few more comparisons. */
32 uint16_t *result = NULL;
42 result = (uint16_t *) s;
48 switch (u16_uctomb_aux (c, uc, 2))
56 /* FIXME: Maybe walking the string via u16_mblen is a win? */
61 if (*s == c0 && s[1] == c1)
62 result = (uint16_t *) s;