82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
/*
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* Copyright 2022 Axel Waggershauser
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*/
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// SPDX-License-Identifier: Apache-2.0
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#include "ECI.h"
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#include "ZXAlgorithms.h"
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#include <map>
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namespace ZXing {
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static const std::map<ECI, CharacterSet> ECI_TO_CHARSET = {
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{ECI(0), CharacterSet::Cp437}, // Obsolete
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{ECI(1), CharacterSet::ISO8859_1}, // Obsolete
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{ECI::Cp437, CharacterSet::Cp437}, // Obsolete but still used by PDF417 Macro fields (ISO/IEC 15438:2015 Annex H.2.3)
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{ECI::ISO8859_1, CharacterSet::ISO8859_1},
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{ECI::ISO8859_2, CharacterSet::ISO8859_2},
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{ECI::ISO8859_3, CharacterSet::ISO8859_3},
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{ECI::ISO8859_4, CharacterSet::ISO8859_4},
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{ECI::ISO8859_5, CharacterSet::ISO8859_5},
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{ECI::ISO8859_6, CharacterSet::ISO8859_6},
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{ECI::ISO8859_7, CharacterSet::ISO8859_7},
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{ECI::ISO8859_8, CharacterSet::ISO8859_8},
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{ECI::ISO8859_9, CharacterSet::ISO8859_9},
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{ECI::ISO8859_10, CharacterSet::ISO8859_10},
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{ECI::ISO8859_11, CharacterSet::ISO8859_11},
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{ECI::ISO8859_13, CharacterSet::ISO8859_13},
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{ECI::ISO8859_14, CharacterSet::ISO8859_14},
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{ECI::ISO8859_15, CharacterSet::ISO8859_15},
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{ECI::ISO8859_16, CharacterSet::ISO8859_16},
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{ECI::Shift_JIS, CharacterSet::Shift_JIS},
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{ECI::Cp1250, CharacterSet::Cp1250},
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{ECI::Cp1251, CharacterSet::Cp1251},
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{ECI::Cp1252, CharacterSet::Cp1252},
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{ECI::Cp1256, CharacterSet::Cp1256},
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{ECI::UTF8, CharacterSet::UTF8},
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{ECI::UTF16BE, CharacterSet::UTF16BE},
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{ECI::UTF16LE, CharacterSet::UTF16LE},
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{ECI::UTF32BE, CharacterSet::UTF32BE},
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{ECI::UTF32LE, CharacterSet::UTF32LE},
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{ECI::ASCII, CharacterSet::ASCII},
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{ECI::Big5, CharacterSet::Big5},
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{ECI::GB18030, CharacterSet::GB18030},
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{ECI::GB2312, CharacterSet::GB2312},
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{ECI::EUC_KR, CharacterSet::EUC_KR},
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{ECI::ISO646_Inv, CharacterSet::ASCII},
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{ECI::Binary, CharacterSet::BINARY},
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};
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std::string ToString(ECI eci)
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{
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return '\\' + ToString(ToInt(eci), 6);
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}
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CharacterSet ToCharacterSet(ECI eci)
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{
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if (auto it = ECI_TO_CHARSET.find(eci); it != ECI_TO_CHARSET.end())
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return it->second;
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return CharacterSet::Unknown;
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}
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ECI ToECI(CharacterSet cs)
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{
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// Special case ISO8859_1 to avoid obsolete ECI 1
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if (cs == CharacterSet::ISO8859_1)
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return ECI::ISO8859_1;
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// Special case Cp437 to avoid obsolete ECI 0 for slightly less obsolete ECI 2
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if (cs == CharacterSet::Cp437)
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return ECI::Cp437;
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for (auto& [key, value] : ECI_TO_CHARSET)
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if (value == cs)
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return key;
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return ECI::Unknown;
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}
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} // namespace ZXing
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