51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
//
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// fdiobuf.cpp
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// libscio
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//
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// Created by Bob Polis at 2020-02-14
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// Copyright (c) 2020 SwiftCoder. All rights reserved.
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//
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#include "libscio.hpp"
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#ifdef _MSC_VER
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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std::streambuf::int_type sc::io::fdiobuf::underflow() {
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int num = ::read(_fd, &_ch, 1);
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if (num <= 0) {
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return EOF;
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}
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setg(&_ch, &_ch, &_ch + 1);
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return _ch;
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}
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std::streamsize sc::io::fdiobuf::xsgetn(char* s, std::streamsize n) {
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return ::read(_fd, s, n);
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}
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std::streambuf::int_type sc::io::fdiobuf::overflow(std::streambuf::int_type c) {
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if (c != EOF) {
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int res;
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if ((res = ::write(_fd, &c, 1)) != 1) {
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return EOF;
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}
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else {
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std::cerr << "write result = " << res << ", errno = " << errno << '\n';
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}
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}
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return c;
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}
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std::streamsize sc::io::fdiobuf::xsputn(const char* s, std::streamsize num) {
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int res = ::write(_fd, s, num);
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if (res != num) {
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std::cerr << "write result = " << res << ", errno = " << errno << '\n';
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return EOF;
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}
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return res;
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}
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