Expose BufferedWriter
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parent
914f4f8c19
commit
a566a22cbc
37
src/file.cc
37
src/file.cc
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@ -279,43 +279,6 @@ void write_to_file(StringView filename, StringView data)
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write(fd, data);
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}
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struct BufferedWriter
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{
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BufferedWriter(int fd)
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: m_fd{fd}, m_exception_count{std::uncaught_exceptions()} {}
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~BufferedWriter() noexcept(false)
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{
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if (m_pos != 0 and m_exception_count == std::uncaught_exceptions())
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Kakoune::write(m_fd, {m_buffer, m_pos});
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}
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void write(StringView data)
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{
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while (not data.empty())
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{
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const ByteCount length = data.length();
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const ByteCount write_len = std::min(length, size - m_pos);
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memcpy(m_buffer + (int)m_pos, data.data(), (int)write_len);
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m_pos += write_len;
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if (m_pos == size)
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{
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Kakoune::write(m_fd, {m_buffer, size});
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m_pos = 0;
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}
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data = data.substr(write_len);
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}
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}
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private:
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static constexpr ByteCount size = 4096;
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int m_fd;
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int m_exception_count;
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ByteCount m_pos = 0;
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char m_buffer[(int)size];
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};
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void write_buffer_to_fd(Buffer& buffer, int fd)
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{
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auto eolformat = buffer.options()["eolformat"].get<EolFormat>();
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38
src/file.hh
38
src/file.hh
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@ -10,6 +10,7 @@
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <cstring>
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namespace Kakoune
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{
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@ -121,6 +122,43 @@ CandidateList complete_filename(StringView prefix, const Regex& ignore_regex,
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CandidateList complete_command(StringView prefix, ByteCount cursor_pos = -1);
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template<int buffer_size = 4096>
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struct BufferedWriter
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{
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BufferedWriter(int fd)
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: m_fd{fd}, m_exception_count{std::uncaught_exceptions()} {}
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~BufferedWriter() noexcept(false)
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{
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if (m_pos != 0 and m_exception_count == std::uncaught_exceptions())
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Kakoune::write(m_fd, {m_buffer, m_pos});
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}
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void write(StringView data)
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{
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while (not data.empty())
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{
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const ByteCount length = data.length();
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const ByteCount write_len = std::min(length, size - m_pos);
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memcpy(m_buffer + (int)m_pos, data.data(), (int)write_len);
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m_pos += write_len;
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if (m_pos == size)
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{
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Kakoune::write(m_fd, {m_buffer, size});
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m_pos = 0;
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}
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data = data.substr(write_len);
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}
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}
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private:
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static constexpr ByteCount size = buffer_size;
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int m_fd;
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int m_exception_count;
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ByteCount m_pos = 0;
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char m_buffer[(int)size];
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};
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}
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#endif // file_hh_INCLUDED
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