libscio/fdistream.cpp

//
// fdistream.cpp
// libscio
//
// Created by Bob Polis at 2020-02-14
// Copyright (c) 2020 SwiftCoder. All rights reserved.
//

#include "libscio.hpp"

#ifdef _MSC_VER
	#include <io.h>
#else
	#include <unistd.h>
#endif

using namespace sc::io;

std::streambuf::int_type fdinbuf::uflow() {
	if (_ch == EOF) {
		return underflow();
	}
	return _ch;
}

std::streambuf::int_type fdinbuf::underflow() {
	char c;
	int num = read(_fd, &c, 1);
	if (num <= 0) {
		_ch = EOF;
	}
	_ch = c;
	return _ch;
}

std::streamsize fdinbuf::xsgetn(char* s, std::streamsize n) {
	return read(_fd, s, n);
}