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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 "Util.hxx"
#include "util/AllocatedString.hxx"
#include "util/AllocatedArray.hxx"
#include "util/ConstBuffer.hxx"
#include <unicode/ustring.h>
#include <cassert>
#include <memory>
#include <stdexcept>
#include <string.h>
AllocatedArray<UChar>
UCharFromUTF8(std::string_view src)
{
const size_t dest_capacity = src.size();
AllocatedArray<UChar> dest(dest_capacity);
UErrorCode error_code = U_ZERO_ERROR;
int32_t dest_length;
u_strFromUTF8(dest.begin(), dest_capacity, &dest_length,
src.data(), src.size(),
&error_code);
if (U_FAILURE(error_code))
throw std::runtime_error(u_errorName(error_code));
dest.SetSize(dest_length);
return dest;
}
AllocatedString<>
UCharToUTF8(std::basic_string_view<UChar> src)
{
/* worst-case estimate */
size_t dest_capacity = 4 * src.size();
std::unique_ptr<char[]> dest(new char[dest_capacity + 1]);
UErrorCode error_code = U_ZERO_ERROR;
int32_t dest_length;
u_strToUTF8(dest.get(), dest_capacity, &dest_length,
src.data(), src.size(),
&error_code);
if (U_FAILURE(error_code))
throw std::runtime_error(u_errorName(error_code));
dest[dest_length] = 0;
return AllocatedString<>::Donate(dest.release());
}
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