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55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "Util.hxx"
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#include "Error.hxx"
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#include "util/AllocatedString.hxx"
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#include "util/AllocatedArray.hxx"
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#include <unicode/ustring.h>
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#include <cassert>
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#include <memory>
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#include <string.h>
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AllocatedArray<UChar>
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UCharFromUTF8(std::string_view src)
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{
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const size_t dest_capacity = src.size();
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AllocatedArray<UChar> dest(dest_capacity);
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UErrorCode error_code = U_ZERO_ERROR;
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int32_t dest_length;
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u_strFromUTF8(dest.data(), dest_capacity, &dest_length,
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src.data(), src.size(),
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&error_code);
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if (U_FAILURE(error_code))
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throw ICU::MakeError(error_code,
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"Conversion from UTF-8 failed");
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dest.SetSize(dest_length);
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return dest;
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}
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AllocatedString
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UCharToUTF8(std::basic_string_view<UChar> src)
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{
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/* worst-case estimate */
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size_t dest_capacity = 4 * src.size();
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auto dest = std::make_unique_for_overwrite<char[]>(dest_capacity + 1);
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UErrorCode error_code = U_ZERO_ERROR;
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int32_t dest_length;
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u_strToUTF8(dest.get(), dest_capacity, &dest_length,
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src.data(), src.size(),
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&error_code);
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if (U_FAILURE(error_code))
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throw ICU::MakeError(error_code,
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"Conversion to UTF-8 failed");
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dest[dest_length] = 0;
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return AllocatedString::Donate(dest.release());
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}
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