102 lines
2.3 KiB
C++
102 lines
2.3 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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#ifndef MPD_ICU_CONVERTER_HXX
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#define MPD_ICU_CONVERTER_HXX
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#include "util/Compiler.h"
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#include "config.h"
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#ifdef HAVE_ICU
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#include "thread/Mutex.hxx"
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#define HAVE_ICU_CONVERTER
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#elif defined(HAVE_ICONV)
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#include <iconv.h>
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#define HAVE_ICU_CONVERTER
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#endif
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#ifdef HAVE_ICU_CONVERTER
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#include <memory>
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#include <string_view>
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#ifdef HAVE_ICU
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struct UConverter;
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#endif
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class AllocatedString;
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/**
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* This class can convert strings with a certain character set to and
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* from UTF-8.
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*/
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class IcuConverter {
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#ifdef HAVE_ICU
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/**
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* ICU's UConverter class is not thread-safe. This mutex
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* serializes simultaneous calls.
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*/
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mutable Mutex mutex;
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UConverter *const converter;
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IcuConverter(UConverter *_converter):converter(_converter) {}
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#elif defined(HAVE_ICONV)
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const iconv_t to_utf8, from_utf8;
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IcuConverter(iconv_t _to, iconv_t _from)
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:to_utf8(_to), from_utf8(_from) {}
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#endif
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public:
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#ifdef HAVE_ICU
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~IcuConverter();
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#elif defined(HAVE_ICONV)
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~IcuConverter() {
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iconv_close(to_utf8);
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iconv_close(from_utf8);
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}
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#endif
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/**
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* Throws std::runtime_error on error.
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*/
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static std::unique_ptr<IcuConverter> Create(const char *charset);
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/**
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* Convert the string to UTF-8.
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*
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* Throws std::runtime_error on error.
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*/
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gcc_nonnull_all
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AllocatedString ToUTF8(std::string_view s) const;
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/**
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* Convert the string from UTF-8.
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*
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* Throws std::runtime_error on error.
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*/
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gcc_nonnull_all
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AllocatedString FromUTF8(std::string_view s) const;
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};
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#endif
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#endif
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