Program Listing for File source.h#

↰ Return to documentation for file (sdv_idl_compiler\source.h)
#ifndef SOURCE_H
#define SOURCE_H

#include <string>
#include <filesystem>

class CSource
{
public:
    CSource();

    CSource(const std::filesystem::path& rpath);

    CSource(const char* szCode);

    CSource(const CSource& rSource) = delete;

    CSource(CSource&& rSource) noexcept;

    CSource& operator=(const CSource& rSource) = delete;

    CSource& operator=(CSource&& rSource) noexcept;

    const std::filesystem::path& GetPathRef() const;

    const std::string& GetCodeRef() const;

    void ReadFile(const std::filesystem::path& rpath);

private:
    constexpr static bool IsSystemBigEndian();

    constexpr static bool IsSystemLittleEndian();

    static void EndianSwap(char16_t& rc16);

    static void EndianSwap(char32_t& rc32);

    template <typename TChar>
    void PotentialSwapBuffer(TChar* szBuffer, size_t nSize, bool bIsSourceBigEndian);

    static std::string ConvertToUTF8(const char16_t* szBuffer, size_t nSize);

    static std::string ConvertToUTF8(const char32_t* szBuffer, size_t nSize);

    std::filesystem::path   m_path;
    std::string             m_ssSource;
};

inline void CSource::EndianSwap(char16_t& rc16)
{
    uint8_t uiTemp = reinterpret_cast<uint8_t*>(&rc16)[0];
    reinterpret_cast<uint8_t*>(&rc16)[0] = reinterpret_cast<uint8_t*>(&rc16)[1];
    reinterpret_cast<uint8_t*>(&rc16)[1] = uiTemp;
}

inline void CSource::EndianSwap(char32_t& rc32)
{
    uint8_t uiTemp = reinterpret_cast<uint8_t*>(&rc32)[0];
    reinterpret_cast<uint8_t*>(&rc32)[0] = reinterpret_cast<uint8_t*>(&rc32)[3];
    reinterpret_cast<uint8_t*>(&rc32)[3] = uiTemp;
    reinterpret_cast<uint8_t*>(&rc32)[1] = reinterpret_cast<uint8_t*>(&rc32)[2];
    reinterpret_cast<uint8_t*>(&rc32)[2] = uiTemp;
}

template <typename TChar>
inline void CSource::PotentialSwapBuffer(TChar* szBuffer, size_t nSize, bool bIsSourceBigEndian)
{
    // Only works for two or four byte characters
    static_assert(sizeof(TChar) == 2 || sizeof(TChar) == 4);

    // Check for a valid buffer
    if (!szBuffer) return;

    // Only swap when the endianness of the data is not corresponding to the character endianness of the system.
    if (bIsSourceBigEndian == IsSystemBigEndian()) return;

    // Swap all bytes
    for (size_t nIndex = 0; nIndex < nSize; nIndex++)
        EndianSwap(szBuffer[nIndex]);
}


#endif // !defined SOURCE_H
Program Listing for File source.h#

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