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libs/coding/reader_streambuf.hpp
46 строк
1020 B
Alexander Borsuk
clang-format
24 июл 2025, 15:48
24 июл 2025, 15:48
15b66d5
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#pragma once #include <cstdint> #include <iostream> #include <memory> class Reader; class Writer; class BaseStreamBuf : public std::streambuf { public: typedef std::streambuf::traits_type traits_type; typedef std::streambuf::char_type char_type; typedef std::streambuf::int_type int_type; }; class ReaderStreamBuf : public BaseStreamBuf { public: ReaderStreamBuf(std::unique_ptr<Reader> && p); virtual ~ReaderStreamBuf(); private: virtual std::streamsize xsgetn(char_type * s, std::streamsize n); virtual int_type underflow(); std::unique_ptr<Reader> m_p; uint64_t m_pos = 0; uint64_t m_size = 0; char m_buf[1] = {}; }; class WriterStreamBuf : public BaseStreamBuf { Writer & m_writer; public: /// Takes the ownership of p. Writer should be allocated in dynamic memory. explicit WriterStreamBuf(Writer & writer) : m_writer(writer) {} private: virtual std::streamsize xsputn(char_type const * s, std::streamsize n); virtual int_type overflow(int_type c); virtual int sync(); };