115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "Compare.hxx"
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#include "CaseFold.hxx"
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#include "util/StringAPI.hxx"
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#include "config.h"
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#ifdef _WIN32
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#include "Win32.hxx"
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#include <windows.h>
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#endif
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#ifdef HAVE_ICU_CASE_FOLD
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IcuCompare::IcuCompare(std::string_view _needle) noexcept
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:needle(IcuCaseFold(_needle)) {}
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#elif defined(_WIN32)
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IcuCompare::IcuCompare(std::string_view _needle) noexcept
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:needle(nullptr)
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{
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try {
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needle = MultiByteToWideChar(CP_UTF8, _needle);
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} catch (...) {
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}
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}
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#else
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IcuCompare::IcuCompare(std::string_view _needle) noexcept
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:needle(_needle) {}
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#endif
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bool
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IcuCompare::operator==(const char *haystack) const noexcept
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{
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#ifdef HAVE_ICU_CASE_FOLD
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return StringIsEqual(IcuCaseFold(haystack).c_str(), needle.c_str());
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#elif defined(_WIN32)
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if (needle == nullptr)
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/* the MultiByteToWideChar() call in the constructor
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has failed, so let's always fail the comparison */
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return false;
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try {
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auto w_haystack = MultiByteToWideChar(CP_UTF8, haystack);
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return CompareStringEx(LOCALE_NAME_INVARIANT,
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NORM_IGNORECASE,
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w_haystack.c_str(), -1,
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needle.c_str(), -1,
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nullptr, nullptr, 0) == CSTR_EQUAL;
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} catch (...) {
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return false;
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}
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#else
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return StringIsEqualIgnoreCase(haystack, needle.c_str());
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#endif
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}
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bool
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IcuCompare::IsIn(const char *haystack) const noexcept
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{
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#ifdef HAVE_ICU_CASE_FOLD
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return StringFind(IcuCaseFold(haystack).c_str(),
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needle.c_str()) != nullptr;
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#elif defined(_WIN32)
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if (needle == nullptr)
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/* the MultiByteToWideChar() call in the constructor
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has failed, so let's always fail the comparison */
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return false;
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try {
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auto w_haystack = MultiByteToWideChar(CP_UTF8, haystack);
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return FindNLSStringEx(LOCALE_NAME_INVARIANT,
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FIND_FROMSTART|NORM_IGNORECASE,
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w_haystack.c_str(), -1,
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needle.c_str(), -1,
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nullptr,
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nullptr, nullptr, 0) >= 0;
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} catch (...) {
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/* MultiByteToWideChar() has failed */
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return false;
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}
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#elif defined(HAVE_STRCASESTR)
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return strcasestr(haystack, needle.c_str()) != nullptr;
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#else
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/* poor man's strcasestr() */
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for (const size_t length = strlen(needle.c_str());
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*haystack != 0; ++haystack)
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if (strncasecmp(haystack, needle.c_str(), length) == 0)
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return true;
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return false;
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#endif
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}
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