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coding/reader_streambuf.cpp
70 строк
1 KB
tatiana-yan
[std] Use new include style for coding, fixes.
12 апр 2019, 12:56
12 апр 2019, 12:56
c198137
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#include "coding/reader_streambuf.hpp" #include "coding/reader.hpp" #include "coding/file_writer.hpp" #include <algorithm> using namespace std; ReaderStreamBuf::ReaderStreamBuf(unique_ptr<Reader> && p) : m_p(move(p)), m_pos(0), m_size(m_p->Size()) { } // Define destructor in .cpp due to using unique_ptr with incomplete type. ReaderStreamBuf::~ReaderStreamBuf() = default; streamsize ReaderStreamBuf::xsgetn(char_type * s, streamsize n) { streamsize const count = min(n, static_cast<streamsize>(m_size - m_pos)); if (count > 0) { m_p->Read(m_pos, s, count); m_pos += count; } return count; } ReaderStreamBuf::int_type ReaderStreamBuf::underflow() { streamsize s = xsgetn(m_buf, sizeof(m_buf)); if (s > 0) { setg(m_buf, m_buf, m_buf + s); return traits_type::to_int_type(m_buf[0]); } else { return traits_type::eof(); } } WriterStreamBuf::~WriterStreamBuf() { delete m_writer; } streamsize WriterStreamBuf::xsputn(char_type const * s, streamsize n) { m_writer->Write(s, n); return n; } WriterStreamBuf::int_type WriterStreamBuf::overflow(int_type c) { if (!traits_type::eq_int_type(c, traits_type::eof())) { char_type const t = traits_type::to_char_type(c); xsputn(&t, 1); } return !traits_type::eof(); } int WriterStreamBuf::sync() { FileWriter * p = dynamic_cast<FileWriter *>(m_writer); if (p) p->Flush(); return 0; }