mpd/src/util/WStringCompare.cxx
2017-09-13 11:47:48 +02:00

46 lines
1.5 KiB
C++

/*
* Copyright 2003-2017 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "WStringCompare.hxx"
bool
StringEndsWith(const wchar_t *haystack, const wchar_t *needle) noexcept
{
const size_t haystack_length = StringLength(haystack);
const size_t needle_length = StringLength(needle);
return haystack_length >= needle_length &&
StringIsEqual(haystack + haystack_length - needle_length, needle);
}
const wchar_t *
FindStringSuffix(const wchar_t *p, const wchar_t *suffix) noexcept
{
const size_t p_length = StringLength(p);
const size_t suffix_length = StringLength(suffix);
if (p_length < suffix_length)
return nullptr;
const auto *q = p + p_length - suffix_length;
return memcmp(q, suffix, suffix_length * sizeof(*suffix)) == 0
? q
: nullptr;
}