51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
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/*
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* Copyright 2016 Nu-book Inc.
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*/
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// SPDX-License-Identifier: Apache-2.0
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#include "TextEncoder.h"
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#include "CharacterSet.h"
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#include "ECI.h"
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#include "Utf.h"
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#include "ZXAlgorithms.h"
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#include "libzueci/zueci.h"
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#include <stdexcept>
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namespace ZXing {
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void TextEncoder::GetBytes(const std::string& str, CharacterSet charset, std::string& bytes)
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{
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int eci = ToInt(ToECI(charset));
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const int str_len = narrow_cast<int>(str.length());
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int eci_len;
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if (eci == -1)
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eci = 899; // Binary
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bytes.clear();
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int error_number = zueci_dest_len_eci(eci, reinterpret_cast<const unsigned char *>(str.data()), str_len, &eci_len);
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if (error_number >= ZUECI_ERROR) // Shouldn't happen
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throw std::logic_error("Internal error `zueci_dest_len_eci()`");
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bytes.resize(eci_len); // Sufficient but approximate length
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error_number = zueci_utf8_to_eci(eci, reinterpret_cast<const unsigned char *>(str.data()), str_len,
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reinterpret_cast<unsigned char *>(bytes.data()), &eci_len);
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if (error_number >= ZUECI_ERROR) {
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bytes.clear();
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throw std::invalid_argument("Unexpected charcode");
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}
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bytes.resize(eci_len); // Actual length
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}
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void TextEncoder::GetBytes(const std::wstring& str, CharacterSet charset, std::string& bytes)
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{
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GetBytes(ToUtf8(str), charset, bytes);
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}
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} // ZXing
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