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/*
* Copyright 2003-2021 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 "Compare.hxx"
#include "CaseFold.hxx"
#include "util/StringAPI.hxx"
#include "config.h"
#ifdef _WIN32
#include "Win32.hxx"
#include <windows.h>
#endif
#ifdef HAVE_ICU_CASE_FOLD
IcuCompare::IcuCompare(std::string_view _needle) noexcept
:needle(IcuCaseFold(_needle)) {}
#elif defined(_WIN32)
IcuCompare::IcuCompare(std::string_view _needle) noexcept
:needle(nullptr)
{
try {
needle = MultiByteToWideChar(CP_UTF8, _needle);
} catch (...) {
}
}
#else
IcuCompare::IcuCompare(std::string_view _needle) noexcept
:needle(AllocatedString<>::Duplicate(_needle)) {}
#endif
bool
IcuCompare::operator==(const char *haystack) const noexcept
{
#ifdef HAVE_ICU_CASE_FOLD
return StringIsEqual(IcuCaseFold(haystack).c_str(), needle.c_str());
#elif defined(_WIN32)
if (needle.IsNull())
/* the MultiByteToWideChar() call in the constructor
has failed, so let's always fail the comparison */
return false;
try {
auto w_haystack = MultiByteToWideChar(CP_UTF8, haystack);
return CompareStringEx(LOCALE_NAME_INVARIANT,
NORM_IGNORECASE,
w_haystack.c_str(), -1,
needle.c_str(), -1,
nullptr, nullptr, 0) == CSTR_EQUAL;
} catch (...) {
return false;
}
#else
return StringIsEqualIgnoreCase(haystack, needle.c_str());
#endif
}
bool
IcuCompare::IsIn(const char *haystack) const noexcept
{
#ifdef HAVE_ICU_CASE_FOLD
return StringFind(IcuCaseFold(haystack).c_str(),
needle.c_str()) != nullptr;
#elif defined(_WIN32)
if (needle.IsNull())
/* the MultiByteToWideChar() call in the constructor
has failed, so let's always fail the comparison */
return false;
try {
auto w_haystack = MultiByteToWideChar(CP_UTF8, haystack);
return FindNLSStringEx(LOCALE_NAME_INVARIANT,
FIND_FROMSTART|NORM_IGNORECASE,
w_haystack.c_str(), -1,
needle.c_str(), -1,
nullptr,
nullptr, nullptr, 0) >= 0;
} catch (...) {
/* MultiByteToWideChar() has failed */
return false;
}
#elif defined(HAVE_STRCASESTR)
return strcasestr(haystack, needle.c_str()) != nullptr;
#else
/* poor man's strcasestr() */
for (const size_t length = strlen(needle.c_str());
*haystack != 0; ++haystack)
if (strncasecmp(haystack, needle.c_str(), length) == 0)
return true;
return false;
#endif
}
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