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/*
* Copyright (C) 2003-2015 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"
#include "WStringAPI.hxx"
#include <assert.h>
#include <string.h>
bool
StringStartsWith(const wchar_t *haystack, const wchar_t *needle)
{
const size_t length = StringLength(needle);
return StringIsEqual(haystack, needle, length);
}
bool
StringEndsWith(const wchar_t *haystack, const wchar_t *needle)
{
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 *
StringAfterPrefix(const wchar_t *string, const wchar_t *prefix)
{
#if !CLANG_CHECK_VERSION(3,6)
/* disabled on clang due to -Wtautological-pointer-compare */
assert(string != nullptr);
assert(prefix != nullptr);
#endif
size_t prefix_length = StringLength(prefix);
return StringIsEqual(string, prefix, prefix_length)
? string + prefix_length
: nullptr;
}
const wchar_t *
FindStringSuffix(const wchar_t *p, const wchar_t *suffix)
{
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;
}
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