93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
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#ifndef ARCHIVES_HPP_TLVURDQK
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#define ARCHIVES_HPP_TLVURDQK
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#include <vanetza/common/byte_order.hpp>
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#include <exception>
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#include <istream>
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#include <ostream>
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#include <streambuf>
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namespace vanetza
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{
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/**
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* This is a drop-in replacement for boost::archive::binary_iarchive
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*/
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class InputArchive
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{
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public:
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using InputStream = std::basic_istream<char>;
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using StreamBuffer = std::basic_streambuf<char>;
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class Exception : public std::runtime_error {
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using std::runtime_error::runtime_error;
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};
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enum class ErrorCode {
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Ok,
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IncompleteData,
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ExcessiveLength,
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ConstraintViolation,
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};
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InputArchive(InputStream& is);
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InputArchive(StreamBuffer& buf);
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template<typename T>
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InputArchive& operator>>(T& t)
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{
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static_assert(std::is_integral<T>::value == true, "only integral types are supported");
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char* ptr = reinterpret_cast<char*>(&t);
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load_binary(ptr, sizeof(T));
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return *this;
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}
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void load_binary(unsigned char* data, std::size_t len);
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void load_binary(char* data, std::size_t len);
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char peek_byte();
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std::size_t remaining_bytes();
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bool is_good() const;
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ErrorCode error_code() const;
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void fail(ErrorCode error_code);
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private:
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StreamBuffer* m_stream_buffer;
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ErrorCode m_error_code = ErrorCode::Ok;
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};
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/**
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* This is a drop-in replacement for boost::archive::binary_oarchive
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*/
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class OutputArchive
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{
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public:
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using OutputStream = std::basic_ostream<char>;
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using StreamBuffer = std::basic_streambuf<char>;
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class Exception : public std::runtime_error {
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using std::runtime_error::runtime_error;
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};
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OutputArchive(OutputStream& os);
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OutputArchive(StreamBuffer& buf);
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template<typename T>
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OutputArchive& operator<<(const T& t)
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{
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static_assert(std::is_integral<T>::value == true, "only integral types are supported");
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const char* ptr = reinterpret_cast<const char*>(&t);
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save_binary(ptr, sizeof(T));
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return *this;
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}
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void save_binary(const unsigned char* data, std::size_t len);
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void save_binary(const char* data, std::size_t len);
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private:
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StreamBuffer* m_stream_buffer;
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};
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} // namespace vanetza
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#endif /* ARCHIVES_HPP_TLVURDQK */
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