dfaf08743c
Only _WIN32 is defined by the compiler, and WIN32 is not standardized and may be missing. Closes #169
103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
/*
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* Copyright 2003-2017 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 "config.h"
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#include "CaseFold.hxx"
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#ifdef HAVE_ICU_CASE_FOLD
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#include "util/AllocatedString.hxx"
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#ifdef HAVE_ICU
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#include "Util.hxx"
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#include "util/AllocatedArray.hxx"
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#include "util/ConstBuffer.hxx"
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#include <unicode/ucol.h>
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#include <unicode/ustring.h>
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#else
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#include <algorithm>
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#include <ctype.h>
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#endif
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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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#include <memory>
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#include <stdexcept>
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#include <assert.h>
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#include <string.h>
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AllocatedString<>
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IcuCaseFold(const char *src) noexcept
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try {
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#ifdef HAVE_ICU
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#if !CLANG_CHECK_VERSION(3,6)
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/* disabled on clang due to -Wtautological-pointer-compare */
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assert(src != nullptr);
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#endif
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const auto u = UCharFromUTF8(src);
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if (u.IsNull())
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return AllocatedString<>::Duplicate(src);
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AllocatedArray<UChar> folded(u.size() * 2u);
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UErrorCode error_code = U_ZERO_ERROR;
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size_t folded_length = u_strFoldCase(folded.begin(), folded.size(),
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u.begin(), u.size(),
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U_FOLD_CASE_DEFAULT,
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&error_code);
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if (folded_length == 0 || error_code != U_ZERO_ERROR)
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return AllocatedString<>::Duplicate(src);
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folded.SetSize(folded_length);
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return UCharToUTF8({folded.begin(), folded.size()});
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#elif defined(_WIN32)
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const auto u = MultiByteToWideChar(CP_UTF8, src);
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const int size = LCMapStringEx(LOCALE_NAME_INVARIANT,
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LCMAP_SORTKEY|LINGUISTIC_IGNORECASE,
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u.c_str(), -1, nullptr, 0,
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nullptr, nullptr, 0);
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if (size <= 0)
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return AllocatedString<>::Duplicate(src);
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std::unique_ptr<wchar_t[]> buffer(new wchar_t[size]);
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if (LCMapStringEx(LOCALE_NAME_INVARIANT,
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LCMAP_SORTKEY|LINGUISTIC_IGNORECASE,
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u.c_str(), -1, buffer.get(), size,
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nullptr, nullptr, 0) <= 0)
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return AllocatedString<>::Duplicate(src);
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return WideCharToMultiByte(CP_UTF8, buffer.get());
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#else
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#error not implemented
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#endif
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} catch (const std::runtime_error &) {
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return AllocatedString<>::Duplicate(src);
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}
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#endif /* HAVE_ICU_CASE_FOLD */
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